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+/**
+ * cgltf - a single-file glTF 2.0 parser written in C99.
+ *
+ * Version: 1.15
+ *
+ * Website: https://github.com/jkuhlmann/cgltf
+ *
+ * Distributed under the MIT License, see notice at the end of this file.
+ *
+ * Building:
+ * Include this file where you need the struct and function
+ * declarations. Have exactly one source file where you define
+ * `CGLTF_IMPLEMENTATION` before including this file to get the
+ * function definitions.
+ *
+ * Reference:
+ * `cgltf_result cgltf_parse(const cgltf_options*, const void*,
+ * cgltf_size, cgltf_data**)` parses both glTF and GLB data. If
+ * this function returns `cgltf_result_success`, you have to call
+ * `cgltf_free()` on the created `cgltf_data*` variable.
+ * Note that contents of external files for buffers and images are not
+ * automatically loaded. You'll need to read these files yourself using
+ * URIs in the `cgltf_data` structure.
+ *
+ * `cgltf_options` is the struct passed to `cgltf_parse()` to control
+ * parts of the parsing process. You can use it to force the file type
+ * and provide memory allocation as well as file operation callbacks.
+ * Should be zero-initialized to trigger default behavior.
+ *
+ * `cgltf_data` is the struct allocated and filled by `cgltf_parse()`.
+ * It generally mirrors the glTF format as described by the spec (see
+ * https://github.com/KhronosGroup/glTF/tree/master/specification/2.0).
+ *
+ * `void cgltf_free(cgltf_data*)` frees the allocated `cgltf_data`
+ * variable.
+ *
+ * `cgltf_result cgltf_load_buffers(const cgltf_options*, cgltf_data*,
+ * const char* gltf_path)` can be optionally called to open and read buffer
+ * files using the `FILE*` APIs. The `gltf_path` argument is the path to
+ * the original glTF file, which allows the parser to resolve the path to
+ * buffer files.
+ *
+ * `cgltf_result cgltf_load_buffer_base64(const cgltf_options* options,
+ * cgltf_size size, const char* base64, void** out_data)` decodes
+ * base64-encoded data content. Used internally by `cgltf_load_buffers()`.
+ * This is useful when decoding data URIs in images.
+ *
+ * `cgltf_result cgltf_parse_file(const cgltf_options* options, const
+ * char* path, cgltf_data** out_data)` can be used to open the given
+ * file using `FILE*` APIs and parse the data using `cgltf_parse()`.
+ *
+ * `cgltf_result cgltf_validate(cgltf_data*)` can be used to do additional
+ * checks to make sure the parsed glTF data is valid.
+ *
+ * `cgltf_node_transform_local` converts the translation / rotation / scale properties of a node
+ * into a mat4.
+ *
+ * `cgltf_node_transform_world` calls `cgltf_node_transform_local` on every ancestor in order
+ * to compute the root-to-node transformation.
+ *
+ * `cgltf_accessor_unpack_floats` reads in the data from an accessor, applies sparse data (if any),
+ * and converts them to floating point. Assumes that `cgltf_load_buffers` has already been called.
+ * By passing null for the output pointer, users can find out how many floats are required in the
+ * output buffer.
+ *
+ * `cgltf_accessor_unpack_indices` reads in the index data from an accessor. Assumes that
+ * `cgltf_load_buffers` has already been called. By passing null for the output pointer, users can
+ * find out how many indices are required in the output buffer. Returns 0 if the accessor is
+ * sparse or if the output component size is less than the accessor's component size.
+ *
+ * `cgltf_num_components` is a tiny utility that tells you the dimensionality of
+ * a certain accessor type. This can be used before `cgltf_accessor_unpack_floats` to help allocate
+ * the necessary amount of memory. `cgltf_component_size` and `cgltf_calc_size` exist for
+ * similar purposes.
+ *
+ * `cgltf_accessor_read_float` reads a certain element from a non-sparse accessor and converts it to
+ * floating point, assuming that `cgltf_load_buffers` has already been called. The passed-in element
+ * size is the number of floats in the output buffer, which should be in the range [1, 16]. Returns
+ * false if the passed-in element_size is too small, or if the accessor is sparse.
+ *
+ * `cgltf_accessor_read_uint` is similar to its floating-point counterpart, but limited to reading
+ * vector types and does not support matrix types. The passed-in element size is the number of uints
+ * in the output buffer, which should be in the range [1, 4]. Returns false if the passed-in
+ * element_size is too small, or if the accessor is sparse.
+ *
+ * `cgltf_accessor_read_index` is similar to its floating-point counterpart, but it returns size_t
+ * and only works with single-component data types.
+ *
+ * `cgltf_copy_extras_json` allows users to retrieve the "extras" data that can be attached to many
+ * glTF objects (which can be arbitrary JSON data). This is a legacy function, consider using
+ * cgltf_extras::data directly instead. You can parse this data using your own JSON parser
+ * or, if you've included the cgltf implementation using the integrated JSMN JSON parser.
+ */
+#ifndef CGLTF_H_INCLUDED__
+#define CGLTF_H_INCLUDED__
+
+#include <stddef.h>
+#include <stdint.h> /* For uint8_t, uint32_t */
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+typedef size_t cgltf_size;
+typedef long long int cgltf_ssize;
+typedef float cgltf_float;
+typedef int cgltf_int;
+typedef unsigned int cgltf_uint;
+typedef int cgltf_bool;
+
+typedef enum cgltf_file_type
+{
+ cgltf_file_type_invalid,
+ cgltf_file_type_gltf,
+ cgltf_file_type_glb,
+ cgltf_file_type_max_enum
+} cgltf_file_type;
+
+typedef enum cgltf_result
+{
+ cgltf_result_success,
+ cgltf_result_data_too_short,
+ cgltf_result_unknown_format,
+ cgltf_result_invalid_json,
+ cgltf_result_invalid_gltf,
+ cgltf_result_invalid_options,
+ cgltf_result_file_not_found,
+ cgltf_result_io_error,
+ cgltf_result_out_of_memory,
+ cgltf_result_legacy_gltf,
+ cgltf_result_max_enum
+} cgltf_result;
+
+typedef struct cgltf_memory_options
+{
+ void* (*alloc_func)(void* user, cgltf_size size);
+ void (*free_func) (void* user, void* ptr);
+ void* user_data;
+} cgltf_memory_options;
+
+typedef struct cgltf_file_options
+{
+ cgltf_result(*read)(const struct cgltf_memory_options* memory_options, const struct cgltf_file_options* file_options, const char* path, cgltf_size* size, void** data);
+ void (*release)(const struct cgltf_memory_options* memory_options, const struct cgltf_file_options* file_options, void* data);
+ void* user_data;
+} cgltf_file_options;
+
+typedef struct cgltf_options
+{
+ cgltf_file_type type; /* invalid == auto detect */
+ cgltf_size json_token_count; /* 0 == auto */
+ cgltf_memory_options memory;
+ cgltf_file_options file;
+} cgltf_options;
+
+typedef enum cgltf_buffer_view_type
+{
+ cgltf_buffer_view_type_invalid,
+ cgltf_buffer_view_type_indices,
+ cgltf_buffer_view_type_vertices,
+ cgltf_buffer_view_type_max_enum
+} cgltf_buffer_view_type;
+
+typedef enum cgltf_attribute_type
+{
+ cgltf_attribute_type_invalid,
+ cgltf_attribute_type_position,
+ cgltf_attribute_type_normal,
+ cgltf_attribute_type_tangent,
+ cgltf_attribute_type_texcoord,
+ cgltf_attribute_type_color,
+ cgltf_attribute_type_joints,
+ cgltf_attribute_type_weights,
+ cgltf_attribute_type_custom,
+ cgltf_attribute_type_max_enum
+} cgltf_attribute_type;
+
+typedef enum cgltf_component_type
+{
+ cgltf_component_type_invalid,
+ cgltf_component_type_r_8, /* BYTE */
+ cgltf_component_type_r_8u, /* UNSIGNED_BYTE */
+ cgltf_component_type_r_16, /* SHORT */
+ cgltf_component_type_r_16u, /* UNSIGNED_SHORT */
+ cgltf_component_type_r_32u, /* UNSIGNED_INT */
+ cgltf_component_type_r_32f, /* FLOAT */
+ cgltf_component_type_max_enum
+} cgltf_component_type;
+
+typedef enum cgltf_type
+{
+ cgltf_type_invalid,
+ cgltf_type_scalar,
+ cgltf_type_vec2,
+ cgltf_type_vec3,
+ cgltf_type_vec4,
+ cgltf_type_mat2,
+ cgltf_type_mat3,
+ cgltf_type_mat4,
+ cgltf_type_max_enum
+} cgltf_type;
+
+typedef enum cgltf_primitive_type
+{
+ cgltf_primitive_type_invalid,
+ cgltf_primitive_type_points,
+ cgltf_primitive_type_lines,
+ cgltf_primitive_type_line_loop,
+ cgltf_primitive_type_line_strip,
+ cgltf_primitive_type_triangles,
+ cgltf_primitive_type_triangle_strip,
+ cgltf_primitive_type_triangle_fan,
+ cgltf_primitive_type_max_enum
+} cgltf_primitive_type;
+
+typedef enum cgltf_alpha_mode
+{
+ cgltf_alpha_mode_opaque,
+ cgltf_alpha_mode_mask,
+ cgltf_alpha_mode_blend,
+ cgltf_alpha_mode_max_enum
+} cgltf_alpha_mode;
+
+typedef enum cgltf_animation_path_type {
+ cgltf_animation_path_type_invalid,
+ cgltf_animation_path_type_translation,
+ cgltf_animation_path_type_rotation,
+ cgltf_animation_path_type_scale,
+ cgltf_animation_path_type_weights,
+ cgltf_animation_path_type_max_enum
+} cgltf_animation_path_type;
+
+typedef enum cgltf_interpolation_type {
+ cgltf_interpolation_type_linear,
+ cgltf_interpolation_type_step,
+ cgltf_interpolation_type_cubic_spline,
+ cgltf_interpolation_type_max_enum
+} cgltf_interpolation_type;
+
+typedef enum cgltf_camera_type {
+ cgltf_camera_type_invalid,
+ cgltf_camera_type_perspective,
+ cgltf_camera_type_orthographic,
+ cgltf_camera_type_max_enum
+} cgltf_camera_type;
+
+typedef enum cgltf_light_type {
+ cgltf_light_type_invalid,
+ cgltf_light_type_directional,
+ cgltf_light_type_point,
+ cgltf_light_type_spot,
+ cgltf_light_type_max_enum
+} cgltf_light_type;
+
+typedef enum cgltf_data_free_method {
+ cgltf_data_free_method_none,
+ cgltf_data_free_method_file_release,
+ cgltf_data_free_method_memory_free,
+ cgltf_data_free_method_max_enum
+} cgltf_data_free_method;
+
+typedef struct cgltf_extras {
+ cgltf_size start_offset; /* this field is deprecated and will be removed in the future; use data instead */
+ cgltf_size end_offset; /* this field is deprecated and will be removed in the future; use data instead */
+
+ char* data;
+} cgltf_extras;
+
+typedef struct cgltf_extension {
+ char* name;
+ char* data;
+} cgltf_extension;
+
+typedef struct cgltf_buffer
+{
+ char* name;
+ cgltf_size size;
+ char* uri;
+ void* data; /* loaded by cgltf_load_buffers */
+ cgltf_data_free_method data_free_method;
+ cgltf_extras extras;
+ cgltf_size extensions_count;
+ cgltf_extension* extensions;
+} cgltf_buffer;
+
+typedef enum cgltf_meshopt_compression_mode {
+ cgltf_meshopt_compression_mode_invalid,
+ cgltf_meshopt_compression_mode_attributes,
+ cgltf_meshopt_compression_mode_triangles,
+ cgltf_meshopt_compression_mode_indices,
+ cgltf_meshopt_compression_mode_max_enum
+} cgltf_meshopt_compression_mode;
+
+typedef enum cgltf_meshopt_compression_filter {
+ cgltf_meshopt_compression_filter_none,
+ cgltf_meshopt_compression_filter_octahedral,
+ cgltf_meshopt_compression_filter_quaternion,
+ cgltf_meshopt_compression_filter_exponential,
+ cgltf_meshopt_compression_filter_max_enum
+} cgltf_meshopt_compression_filter;
+
+typedef struct cgltf_meshopt_compression
+{
+ cgltf_buffer* buffer;
+ cgltf_size offset;
+ cgltf_size size;
+ cgltf_size stride;
+ cgltf_size count;
+ cgltf_meshopt_compression_mode mode;
+ cgltf_meshopt_compression_filter filter;
+} cgltf_meshopt_compression;
+
+typedef struct cgltf_buffer_view
+{
+ char *name;
+ cgltf_buffer* buffer;
+ cgltf_size offset;
+ cgltf_size size;
+ cgltf_size stride; /* 0 == automatically determined by accessor */
+ cgltf_buffer_view_type type;
+ void* data; /* overrides buffer->data if present, filled by extensions */
+ cgltf_bool has_meshopt_compression;
+ cgltf_meshopt_compression meshopt_compression;
+ cgltf_extras extras;
+ cgltf_size extensions_count;
+ cgltf_extension* extensions;
+} cgltf_buffer_view;
+
+typedef struct cgltf_accessor_sparse
+{
+ cgltf_size count;
+ cgltf_buffer_view* indices_buffer_view;
+ cgltf_size indices_byte_offset;
+ cgltf_component_type indices_component_type;
+ cgltf_buffer_view* values_buffer_view;
+ cgltf_size values_byte_offset;
+} cgltf_accessor_sparse;
+
+typedef struct cgltf_accessor
+{
+ char* name;
+ cgltf_component_type component_type;
+ cgltf_bool normalized;
+ cgltf_type type;
+ cgltf_size offset;
+ cgltf_size count;
+ cgltf_size stride;
+ cgltf_buffer_view* buffer_view;
+ cgltf_bool has_min;
+ cgltf_float min[16];
+ cgltf_bool has_max;
+ cgltf_float max[16];
+ cgltf_bool is_sparse;
+ cgltf_accessor_sparse sparse;
+ cgltf_extras extras;
+ cgltf_size extensions_count;
+ cgltf_extension* extensions;
+} cgltf_accessor;
+
+typedef struct cgltf_attribute
+{
+ char* name;
+ cgltf_attribute_type type;
+ cgltf_int index;
+ cgltf_accessor* data;
+} cgltf_attribute;
+
+typedef struct cgltf_image
+{
+ char* name;
+ char* uri;
+ cgltf_buffer_view* buffer_view;
+ char* mime_type;
+ cgltf_extras extras;
+ cgltf_size extensions_count;
+ cgltf_extension* extensions;
+} cgltf_image;
+
+typedef enum cgltf_filter_type {
+ cgltf_filter_type_undefined = 0,
+ cgltf_filter_type_nearest = 9728,
+ cgltf_filter_type_linear = 9729,
+ cgltf_filter_type_nearest_mipmap_nearest = 9984,
+ cgltf_filter_type_linear_mipmap_nearest = 9985,
+ cgltf_filter_type_nearest_mipmap_linear = 9986,
+ cgltf_filter_type_linear_mipmap_linear = 9987
+} cgltf_filter_type;
+
+typedef enum cgltf_wrap_mode {
+ cgltf_wrap_mode_clamp_to_edge = 33071,
+ cgltf_wrap_mode_mirrored_repeat = 33648,
+ cgltf_wrap_mode_repeat = 10497
+} cgltf_wrap_mode;
+
+typedef struct cgltf_sampler
+{
+ char* name;
+ cgltf_filter_type mag_filter;
+ cgltf_filter_type min_filter;
+ cgltf_wrap_mode wrap_s;
+ cgltf_wrap_mode wrap_t;
+ cgltf_extras extras;
+ cgltf_size extensions_count;
+ cgltf_extension* extensions;
+} cgltf_sampler;
+
+typedef struct cgltf_texture
+{
+ char* name;
+ cgltf_image* image;
+ cgltf_sampler* sampler;
+ cgltf_bool has_basisu;
+ cgltf_image* basisu_image;
+ cgltf_bool has_webp;
+ cgltf_image* webp_image;
+ cgltf_extras extras;
+ cgltf_size extensions_count;
+ cgltf_extension* extensions;
+} cgltf_texture;
+
+typedef struct cgltf_texture_transform
+{
+ cgltf_float offset[2];
+ cgltf_float rotation;
+ cgltf_float scale[2];
+ cgltf_bool has_texcoord;
+ cgltf_int texcoord;
+} cgltf_texture_transform;
+
+typedef struct cgltf_texture_view
+{
+ cgltf_texture* texture;
+ cgltf_int texcoord;
+ cgltf_float scale; /* equivalent to strength for occlusion_texture */
+ cgltf_bool has_transform;
+ cgltf_texture_transform transform;
+} cgltf_texture_view;
+
+typedef struct cgltf_pbr_metallic_roughness
+{
+ cgltf_texture_view base_color_texture;
+ cgltf_texture_view metallic_roughness_texture;
+
+ cgltf_float base_color_factor[4];
+ cgltf_float metallic_factor;
+ cgltf_float roughness_factor;
+} cgltf_pbr_metallic_roughness;
+
+typedef struct cgltf_pbr_specular_glossiness
+{
+ cgltf_texture_view diffuse_texture;
+ cgltf_texture_view specular_glossiness_texture;
+
+ cgltf_float diffuse_factor[4];
+ cgltf_float specular_factor[3];
+ cgltf_float glossiness_factor;
+} cgltf_pbr_specular_glossiness;
+
+typedef struct cgltf_clearcoat
+{
+ cgltf_texture_view clearcoat_texture;
+ cgltf_texture_view clearcoat_roughness_texture;
+ cgltf_texture_view clearcoat_normal_texture;
+
+ cgltf_float clearcoat_factor;
+ cgltf_float clearcoat_roughness_factor;
+} cgltf_clearcoat;
+
+typedef struct cgltf_transmission
+{
+ cgltf_texture_view transmission_texture;
+ cgltf_float transmission_factor;
+} cgltf_transmission;
+
+typedef struct cgltf_ior
+{
+ cgltf_float ior;
+} cgltf_ior;
+
+typedef struct cgltf_specular
+{
+ cgltf_texture_view specular_texture;
+ cgltf_texture_view specular_color_texture;
+ cgltf_float specular_color_factor[3];
+ cgltf_float specular_factor;
+} cgltf_specular;
+
+typedef struct cgltf_volume
+{
+ cgltf_texture_view thickness_texture;
+ cgltf_float thickness_factor;
+ cgltf_float attenuation_color[3];
+ cgltf_float attenuation_distance;
+} cgltf_volume;
+
+typedef struct cgltf_sheen
+{
+ cgltf_texture_view sheen_color_texture;
+ cgltf_float sheen_color_factor[3];
+ cgltf_texture_view sheen_roughness_texture;
+ cgltf_float sheen_roughness_factor;
+} cgltf_sheen;
+
+typedef struct cgltf_emissive_strength
+{
+ cgltf_float emissive_strength;
+} cgltf_emissive_strength;
+
+typedef struct cgltf_iridescence
+{
+ cgltf_float iridescence_factor;
+ cgltf_texture_view iridescence_texture;
+ cgltf_float iridescence_ior;
+ cgltf_float iridescence_thickness_min;
+ cgltf_float iridescence_thickness_max;
+ cgltf_texture_view iridescence_thickness_texture;
+} cgltf_iridescence;
+
+typedef struct cgltf_diffuse_transmission
+{
+ cgltf_texture_view diffuse_transmission_texture;
+ cgltf_float diffuse_transmission_factor;
+ cgltf_float diffuse_transmission_color_factor[3];
+ cgltf_texture_view diffuse_transmission_color_texture;
+} cgltf_diffuse_transmission;
+
+typedef struct cgltf_anisotropy
+{
+ cgltf_float anisotropy_strength;
+ cgltf_float anisotropy_rotation;
+ cgltf_texture_view anisotropy_texture;
+} cgltf_anisotropy;
+
+typedef struct cgltf_dispersion
+{
+ cgltf_float dispersion;
+} cgltf_dispersion;
+
+typedef struct cgltf_material
+{
+ char* name;
+ cgltf_bool has_pbr_metallic_roughness;
+ cgltf_bool has_pbr_specular_glossiness;
+ cgltf_bool has_clearcoat;
+ cgltf_bool has_transmission;
+ cgltf_bool has_volume;
+ cgltf_bool has_ior;
+ cgltf_bool has_specular;
+ cgltf_bool has_sheen;
+ cgltf_bool has_emissive_strength;
+ cgltf_bool has_iridescence;
+ cgltf_bool has_diffuse_transmission;
+ cgltf_bool has_anisotropy;
+ cgltf_bool has_dispersion;
+ cgltf_pbr_metallic_roughness pbr_metallic_roughness;
+ cgltf_pbr_specular_glossiness pbr_specular_glossiness;
+ cgltf_clearcoat clearcoat;
+ cgltf_ior ior;
+ cgltf_specular specular;
+ cgltf_sheen sheen;
+ cgltf_transmission transmission;
+ cgltf_volume volume;
+ cgltf_emissive_strength emissive_strength;
+ cgltf_iridescence iridescence;
+ cgltf_diffuse_transmission diffuse_transmission;
+ cgltf_anisotropy anisotropy;
+ cgltf_dispersion dispersion;
+ cgltf_texture_view normal_texture;
+ cgltf_texture_view occlusion_texture;
+ cgltf_texture_view emissive_texture;
+ cgltf_float emissive_factor[3];
+ cgltf_alpha_mode alpha_mode;
+ cgltf_float alpha_cutoff;
+ cgltf_bool double_sided;
+ cgltf_bool unlit;
+ cgltf_extras extras;
+ cgltf_size extensions_count;
+ cgltf_extension* extensions;
+} cgltf_material;
+
+typedef struct cgltf_material_mapping
+{
+ cgltf_size variant;
+ cgltf_material* material;
+ cgltf_extras extras;
+} cgltf_material_mapping;
+
+typedef struct cgltf_morph_target {
+ cgltf_attribute* attributes;
+ cgltf_size attributes_count;
+} cgltf_morph_target;
+
+typedef struct cgltf_draco_mesh_compression {
+ cgltf_buffer_view* buffer_view;
+ cgltf_attribute* attributes;
+ cgltf_size attributes_count;
+} cgltf_draco_mesh_compression;
+
+typedef struct cgltf_mesh_gpu_instancing {
+ cgltf_attribute* attributes;
+ cgltf_size attributes_count;
+} cgltf_mesh_gpu_instancing;
+
+typedef struct cgltf_primitive {
+ cgltf_primitive_type type;
+ cgltf_accessor* indices;
+ cgltf_material* material;
+ cgltf_attribute* attributes;
+ cgltf_size attributes_count;
+ cgltf_morph_target* targets;
+ cgltf_size targets_count;
+ cgltf_extras extras;
+ cgltf_bool has_draco_mesh_compression;
+ cgltf_draco_mesh_compression draco_mesh_compression;
+ cgltf_material_mapping* mappings;
+ cgltf_size mappings_count;
+ cgltf_size extensions_count;
+ cgltf_extension* extensions;
+} cgltf_primitive;
+
+typedef struct cgltf_mesh {
+ char* name;
+ cgltf_primitive* primitives;
+ cgltf_size primitives_count;
+ cgltf_float* weights;
+ cgltf_size weights_count;
+ char** target_names;
+ cgltf_size target_names_count;
+ cgltf_extras extras;
+ cgltf_size extensions_count;
+ cgltf_extension* extensions;
+} cgltf_mesh;
+
+typedef struct cgltf_node cgltf_node;
+
+typedef struct cgltf_skin {
+ char* name;
+ cgltf_node** joints;
+ cgltf_size joints_count;
+ cgltf_node* skeleton;
+ cgltf_accessor* inverse_bind_matrices;
+ cgltf_extras extras;
+ cgltf_size extensions_count;
+ cgltf_extension* extensions;
+} cgltf_skin;
+
+typedef struct cgltf_camera_perspective {
+ cgltf_bool has_aspect_ratio;
+ cgltf_float aspect_ratio;
+ cgltf_float yfov;
+ cgltf_bool has_zfar;
+ cgltf_float zfar;
+ cgltf_float znear;
+ cgltf_extras extras;
+} cgltf_camera_perspective;
+
+typedef struct cgltf_camera_orthographic {
+ cgltf_float xmag;
+ cgltf_float ymag;
+ cgltf_float zfar;
+ cgltf_float znear;
+ cgltf_extras extras;
+} cgltf_camera_orthographic;
+
+typedef struct cgltf_camera {
+ char* name;
+ cgltf_camera_type type;
+ union {
+ cgltf_camera_perspective perspective;
+ cgltf_camera_orthographic orthographic;
+ } data;
+ cgltf_extras extras;
+ cgltf_size extensions_count;
+ cgltf_extension* extensions;
+} cgltf_camera;
+
+typedef struct cgltf_light {
+ char* name;
+ cgltf_float color[3];
+ cgltf_float intensity;
+ cgltf_light_type type;
+ cgltf_float range;
+ cgltf_float spot_inner_cone_angle;
+ cgltf_float spot_outer_cone_angle;
+ cgltf_extras extras;
+} cgltf_light;
+
+struct cgltf_node {
+ char* name;
+ cgltf_node* parent;
+ cgltf_node** children;
+ cgltf_size children_count;
+ cgltf_skin* skin;
+ cgltf_mesh* mesh;
+ cgltf_camera* camera;
+ cgltf_light* light;
+ cgltf_float* weights;
+ cgltf_size weights_count;
+ cgltf_bool has_translation;
+ cgltf_bool has_rotation;
+ cgltf_bool has_scale;
+ cgltf_bool has_matrix;
+ cgltf_float translation[3];
+ cgltf_float rotation[4];
+ cgltf_float scale[3];
+ cgltf_float matrix[16];
+ cgltf_extras extras;
+ cgltf_bool has_mesh_gpu_instancing;
+ cgltf_mesh_gpu_instancing mesh_gpu_instancing;
+ cgltf_size extensions_count;
+ cgltf_extension* extensions;
+};
+
+typedef struct cgltf_scene {
+ char* name;
+ cgltf_node** nodes;
+ cgltf_size nodes_count;
+ cgltf_extras extras;
+ cgltf_size extensions_count;
+ cgltf_extension* extensions;
+} cgltf_scene;
+
+typedef struct cgltf_animation_sampler {
+ cgltf_accessor* input;
+ cgltf_accessor* output;
+ cgltf_interpolation_type interpolation;
+ cgltf_extras extras;
+ cgltf_size extensions_count;
+ cgltf_extension* extensions;
+} cgltf_animation_sampler;
+
+typedef struct cgltf_animation_channel {
+ cgltf_animation_sampler* sampler;
+ cgltf_node* target_node;
+ cgltf_animation_path_type target_path;
+ cgltf_extras extras;
+ cgltf_size extensions_count;
+ cgltf_extension* extensions;
+} cgltf_animation_channel;
+
+typedef struct cgltf_animation {
+ char* name;
+ cgltf_animation_sampler* samplers;
+ cgltf_size samplers_count;
+ cgltf_animation_channel* channels;
+ cgltf_size channels_count;
+ cgltf_extras extras;
+ cgltf_size extensions_count;
+ cgltf_extension* extensions;
+} cgltf_animation;
+
+typedef struct cgltf_material_variant
+{
+ char* name;
+ cgltf_extras extras;
+} cgltf_material_variant;
+
+typedef struct cgltf_asset {
+ char* copyright;
+ char* generator;
+ char* version;
+ char* min_version;
+ cgltf_extras extras;
+ cgltf_size extensions_count;
+ cgltf_extension* extensions;
+} cgltf_asset;
+
+typedef struct cgltf_data
+{
+ cgltf_file_type file_type;
+ void* file_data;
+
+ cgltf_asset asset;
+
+ cgltf_mesh* meshes;
+ cgltf_size meshes_count;
+
+ cgltf_material* materials;
+ cgltf_size materials_count;
+
+ cgltf_accessor* accessors;
+ cgltf_size accessors_count;
+
+ cgltf_buffer_view* buffer_views;
+ cgltf_size buffer_views_count;
+
+ cgltf_buffer* buffers;
+ cgltf_size buffers_count;
+
+ cgltf_image* images;
+ cgltf_size images_count;
+
+ cgltf_texture* textures;
+ cgltf_size textures_count;
+
+ cgltf_sampler* samplers;
+ cgltf_size samplers_count;
+
+ cgltf_skin* skins;
+ cgltf_size skins_count;
+
+ cgltf_camera* cameras;
+ cgltf_size cameras_count;
+
+ cgltf_light* lights;
+ cgltf_size lights_count;
+
+ cgltf_node* nodes;
+ cgltf_size nodes_count;
+
+ cgltf_scene* scenes;
+ cgltf_size scenes_count;
+
+ cgltf_scene* scene;
+
+ cgltf_animation* animations;
+ cgltf_size animations_count;
+
+ cgltf_material_variant* variants;
+ cgltf_size variants_count;
+
+ cgltf_extras extras;
+
+ cgltf_size data_extensions_count;
+ cgltf_extension* data_extensions;
+
+ char** extensions_used;
+ cgltf_size extensions_used_count;
+
+ char** extensions_required;
+ cgltf_size extensions_required_count;
+
+ const char* json;
+ cgltf_size json_size;
+
+ const void* bin;
+ cgltf_size bin_size;
+
+ cgltf_memory_options memory;
+ cgltf_file_options file;
+} cgltf_data;
+
+cgltf_result cgltf_parse(
+ const cgltf_options* options,
+ const void* data,
+ cgltf_size size,
+ cgltf_data** out_data);
+
+cgltf_result cgltf_parse_file(
+ const cgltf_options* options,
+ const char* path,
+ cgltf_data** out_data);
+
+cgltf_result cgltf_load_buffers(
+ const cgltf_options* options,
+ cgltf_data* data,
+ const char* gltf_path);
+
+cgltf_result cgltf_load_buffer_base64(const cgltf_options* options, cgltf_size size, const char* base64, void** out_data);
+
+cgltf_size cgltf_decode_string(char* string);
+cgltf_size cgltf_decode_uri(char* uri);
+
+cgltf_result cgltf_validate(cgltf_data* data);
+
+void cgltf_free(cgltf_data* data);
+
+void cgltf_node_transform_local(const cgltf_node* node, cgltf_float* out_matrix);
+void cgltf_node_transform_world(const cgltf_node* node, cgltf_float* out_matrix);
+
+const uint8_t* cgltf_buffer_view_data(const cgltf_buffer_view* view);
+
+const cgltf_accessor* cgltf_find_accessor(const cgltf_primitive* prim, cgltf_attribute_type type, cgltf_int index);
+
+cgltf_bool cgltf_accessor_read_float(const cgltf_accessor* accessor, cgltf_size index, cgltf_float* out, cgltf_size element_size);
+cgltf_bool cgltf_accessor_read_uint(const cgltf_accessor* accessor, cgltf_size index, cgltf_uint* out, cgltf_size element_size);
+cgltf_size cgltf_accessor_read_index(const cgltf_accessor* accessor, cgltf_size index);
+
+cgltf_size cgltf_num_components(cgltf_type type);
+cgltf_size cgltf_component_size(cgltf_component_type component_type);
+cgltf_size cgltf_calc_size(cgltf_type type, cgltf_component_type component_type);
+
+cgltf_size cgltf_accessor_unpack_floats(const cgltf_accessor* accessor, cgltf_float* out, cgltf_size float_count);
+cgltf_size cgltf_accessor_unpack_indices(const cgltf_accessor* accessor, void* out, cgltf_size out_component_size, cgltf_size index_count);
+
+/* this function is deprecated and will be removed in the future; use cgltf_extras::data instead */
+cgltf_result cgltf_copy_extras_json(const cgltf_data* data, const cgltf_extras* extras, char* dest, cgltf_size* dest_size);
+
+cgltf_size cgltf_mesh_index(const cgltf_data* data, const cgltf_mesh* object);
+cgltf_size cgltf_material_index(const cgltf_data* data, const cgltf_material* object);
+cgltf_size cgltf_accessor_index(const cgltf_data* data, const cgltf_accessor* object);
+cgltf_size cgltf_buffer_view_index(const cgltf_data* data, const cgltf_buffer_view* object);
+cgltf_size cgltf_buffer_index(const cgltf_data* data, const cgltf_buffer* object);
+cgltf_size cgltf_image_index(const cgltf_data* data, const cgltf_image* object);
+cgltf_size cgltf_texture_index(const cgltf_data* data, const cgltf_texture* object);
+cgltf_size cgltf_sampler_index(const cgltf_data* data, const cgltf_sampler* object);
+cgltf_size cgltf_skin_index(const cgltf_data* data, const cgltf_skin* object);
+cgltf_size cgltf_camera_index(const cgltf_data* data, const cgltf_camera* object);
+cgltf_size cgltf_light_index(const cgltf_data* data, const cgltf_light* object);
+cgltf_size cgltf_node_index(const cgltf_data* data, const cgltf_node* object);
+cgltf_size cgltf_scene_index(const cgltf_data* data, const cgltf_scene* object);
+cgltf_size cgltf_animation_index(const cgltf_data* data, const cgltf_animation* object);
+cgltf_size cgltf_animation_sampler_index(const cgltf_animation* animation, const cgltf_animation_sampler* object);
+cgltf_size cgltf_animation_channel_index(const cgltf_animation* animation, const cgltf_animation_channel* object);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* #ifndef CGLTF_H_INCLUDED__ */
+
+/*
+ *
+ * Stop now, if you are only interested in the API.
+ * Below, you find the implementation.
+ *
+ */
+
+#if defined(__INTELLISENSE__) || defined(__JETBRAINS_IDE__)
+/* This makes MSVC/CLion intellisense work. */
+#define CGLTF_IMPLEMENTATION
+#endif
+
+#ifdef CGLTF_IMPLEMENTATION
+
+#include <assert.h> /* For assert */
+#include <string.h> /* For strncpy */
+#include <stdio.h> /* For fopen */
+#include <limits.h> /* For UINT_MAX etc */
+#include <float.h> /* For FLT_MAX */
+
+#if !defined(CGLTF_MALLOC) || !defined(CGLTF_FREE) || !defined(CGLTF_ATOI) || !defined(CGLTF_ATOF) || !defined(CGLTF_ATOLL)
+#include <stdlib.h> /* For malloc, free, atoi, atof */
+#endif
+
+/* JSMN_PARENT_LINKS is necessary to make parsing large structures linear in input size */
+#define JSMN_PARENT_LINKS
+
+/* JSMN_STRICT is necessary to reject invalid JSON documents */
+#define JSMN_STRICT
+
+/*
+ * -- jsmn.h start --
+ * Source: https://github.com/zserge/jsmn
+ * License: MIT
+ */
+typedef enum {
+ JSMN_UNDEFINED = 0,
+ JSMN_OBJECT = 1,
+ JSMN_ARRAY = 2,
+ JSMN_STRING = 3,
+ JSMN_PRIMITIVE = 4
+} jsmntype_t;
+enum jsmnerr {
+ /* Not enough tokens were provided */
+ JSMN_ERROR_NOMEM = -1,
+ /* Invalid character inside JSON string */
+ JSMN_ERROR_INVAL = -2,
+ /* The string is not a full JSON packet, more bytes expected */
+ JSMN_ERROR_PART = -3
+};
+typedef struct {
+ jsmntype_t type;
+ ptrdiff_t start;
+ ptrdiff_t end;
+ int size;
+#ifdef JSMN_PARENT_LINKS
+ int parent;
+#endif
+} jsmntok_t;
+typedef struct {
+ size_t pos; /* offset in the JSON string */
+ unsigned int toknext; /* next token to allocate */
+ int toksuper; /* superior token node, e.g parent object or array */
+} jsmn_parser;
+static void jsmn_init(jsmn_parser *parser);
+static int jsmn_parse(jsmn_parser *parser, const char *js, size_t len, jsmntok_t *tokens, size_t num_tokens);
+/*
+ * -- jsmn.h end --
+ */
+
+
+#ifndef CGLTF_CONSTS
+#define GlbHeaderSize 12
+#define GlbChunkHeaderSize 8
+static const uint32_t GlbVersion = 2;
+static const uint32_t GlbMagic = 0x46546C67;
+static const uint32_t GlbMagicJsonChunk = 0x4E4F534A;
+static const uint32_t GlbMagicBinChunk = 0x004E4942;
+#define CGLTF_CONSTS
+#endif
+
+#ifndef CGLTF_MALLOC
+#define CGLTF_MALLOC(size) malloc(size)
+#endif
+#ifndef CGLTF_FREE
+#define CGLTF_FREE(ptr) free(ptr)
+#endif
+#ifndef CGLTF_ATOI
+#define CGLTF_ATOI(str) atoi(str)
+#endif
+#ifndef CGLTF_ATOF
+#define CGLTF_ATOF(str) atof(str)
+#endif
+#ifndef CGLTF_ATOLL
+#define CGLTF_ATOLL(str) atoll(str)
+#endif
+#ifndef CGLTF_VALIDATE_ENABLE_ASSERTS
+#define CGLTF_VALIDATE_ENABLE_ASSERTS 0
+#endif
+
+static void* cgltf_default_alloc(void* user, cgltf_size size)
+{
+ (void)user;
+ return CGLTF_MALLOC(size);
+}
+
+static void cgltf_default_free(void* user, void* ptr)
+{
+ (void)user;
+ CGLTF_FREE(ptr);
+}
+
+static void* cgltf_calloc(cgltf_options* options, size_t element_size, cgltf_size count)
+{
+ if (SIZE_MAX / element_size < count)
+ {
+ return NULL;
+ }
+ void* result = options->memory.alloc_func(options->memory.user_data, element_size * count);
+ if (!result)
+ {
+ return NULL;
+ }
+ memset(result, 0, element_size * count);
+ return result;
+}
+
+static cgltf_result cgltf_default_file_read(const struct cgltf_memory_options* memory_options, const struct cgltf_file_options* file_options, const char* path, cgltf_size* size, void** data)
+{
+ (void)file_options;
+ void* (*memory_alloc)(void*, cgltf_size) = memory_options->alloc_func ? memory_options->alloc_func : &cgltf_default_alloc;
+ void (*memory_free)(void*, void*) = memory_options->free_func ? memory_options->free_func : &cgltf_default_free;
+
+ FILE* file = fopen(path, "rb");
+ if (!file)
+ {
+ return cgltf_result_file_not_found;
+ }
+
+ cgltf_size file_size = size ? *size : 0;
+
+ if (file_size == 0)
+ {
+ fseek(file, 0, SEEK_END);
+
+#ifdef _MSC_VER
+ __int64 length = _ftelli64(file);
+#else
+ long length = ftell(file);
+#endif
+
+ if (length < 0)
+ {
+ fclose(file);
+ return cgltf_result_io_error;
+ }
+
+ fseek(file, 0, SEEK_SET);
+ file_size = (cgltf_size)length;
+ }
+
+ char* file_data = (char*)memory_alloc(memory_options->user_data, file_size);
+ if (!file_data)
+ {
+ fclose(file);
+ return cgltf_result_out_of_memory;
+ }
+
+ cgltf_size read_size = fread(file_data, 1, file_size, file);
+
+ fclose(file);
+
+ if (read_size != file_size)
+ {
+ memory_free(memory_options->user_data, file_data);
+ return cgltf_result_io_error;
+ }
+
+ if (size)
+ {
+ *size = file_size;
+ }
+ if (data)
+ {
+ *data = file_data;
+ }
+
+ return cgltf_result_success;
+}
+
+static void cgltf_default_file_release(const struct cgltf_memory_options* memory_options, const struct cgltf_file_options* file_options, void* data)
+{
+ (void)file_options;
+ void (*memfree)(void*, void*) = memory_options->free_func ? memory_options->free_func : &cgltf_default_free;
+ memfree(memory_options->user_data, data);
+}
+
+static cgltf_result cgltf_parse_json(cgltf_options* options, const uint8_t* json_chunk, cgltf_size size, cgltf_data** out_data);
+
+cgltf_result cgltf_parse(const cgltf_options* options, const void* data, cgltf_size size, cgltf_data** out_data)
+{
+ if (size < GlbHeaderSize)
+ {
+ return cgltf_result_data_too_short;
+ }
+
+ if (options == NULL)
+ {
+ return cgltf_result_invalid_options;
+ }
+
+ cgltf_options fixed_options = *options;
+ if (fixed_options.memory.alloc_func == NULL)
+ {
+ fixed_options.memory.alloc_func = &cgltf_default_alloc;
+ }
+ if (fixed_options.memory.free_func == NULL)
+ {
+ fixed_options.memory.free_func = &cgltf_default_free;
+ }
+
+ uint32_t tmp;
+ // Magic
+ memcpy(&tmp, data, 4);
+ if (tmp != GlbMagic)
+ {
+ if (fixed_options.type == cgltf_file_type_invalid)
+ {
+ fixed_options.type = cgltf_file_type_gltf;
+ }
+ else if (fixed_options.type == cgltf_file_type_glb)
+ {
+ return cgltf_result_unknown_format;
+ }
+ }
+
+ if (fixed_options.type == cgltf_file_type_gltf)
+ {
+ cgltf_result json_result = cgltf_parse_json(&fixed_options, (const uint8_t*)data, size, out_data);
+ if (json_result != cgltf_result_success)
+ {
+ return json_result;
+ }
+
+ (*out_data)->file_type = cgltf_file_type_gltf;
+
+ return cgltf_result_success;
+ }
+
+ const uint8_t* ptr = (const uint8_t*)data;
+ // Version
+ memcpy(&tmp, ptr + 4, 4);
+ uint32_t version = tmp;
+ if (version != GlbVersion)
+ {
+ return version < GlbVersion ? cgltf_result_legacy_gltf : cgltf_result_unknown_format;
+ }
+
+ // Total length
+ memcpy(&tmp, ptr + 8, 4);
+ if (tmp > size)
+ {
+ return cgltf_result_data_too_short;
+ }
+
+ const uint8_t* json_chunk = ptr + GlbHeaderSize;
+
+ if (GlbHeaderSize + GlbChunkHeaderSize > size)
+ {
+ return cgltf_result_data_too_short;
+ }
+
+ // JSON chunk: length
+ uint32_t json_length;
+ memcpy(&json_length, json_chunk, 4);
+ if (json_length > size - GlbHeaderSize - GlbChunkHeaderSize)
+ {
+ return cgltf_result_data_too_short;
+ }
+
+ // JSON chunk: magic
+ memcpy(&tmp, json_chunk + 4, 4);
+ if (tmp != GlbMagicJsonChunk)
+ {
+ return cgltf_result_unknown_format;
+ }
+
+ json_chunk += GlbChunkHeaderSize;
+
+ const void* bin = NULL;
+ cgltf_size bin_size = 0;
+
+ if (GlbChunkHeaderSize <= size - GlbHeaderSize - GlbChunkHeaderSize - json_length)
+ {
+ // We can read another chunk
+ const uint8_t* bin_chunk = json_chunk + json_length;
+
+ // Bin chunk: length
+ uint32_t bin_length;
+ memcpy(&bin_length, bin_chunk, 4);
+ if (bin_length > size - GlbHeaderSize - GlbChunkHeaderSize - json_length - GlbChunkHeaderSize)
+ {
+ return cgltf_result_data_too_short;
+ }
+
+ // Bin chunk: magic
+ memcpy(&tmp, bin_chunk + 4, 4);
+ if (tmp != GlbMagicBinChunk)
+ {
+ return cgltf_result_unknown_format;
+ }
+
+ bin_chunk += GlbChunkHeaderSize;
+
+ bin = bin_chunk;
+ bin_size = bin_length;
+ }
+
+ cgltf_result json_result = cgltf_parse_json(&fixed_options, json_chunk, json_length, out_data);
+ if (json_result != cgltf_result_success)
+ {
+ return json_result;
+ }
+
+ (*out_data)->file_type = cgltf_file_type_glb;
+ (*out_data)->bin = bin;
+ (*out_data)->bin_size = bin_size;
+
+ return cgltf_result_success;
+}
+
+cgltf_result cgltf_parse_file(const cgltf_options* options, const char* path, cgltf_data** out_data)
+{
+ if (options == NULL)
+ {
+ return cgltf_result_invalid_options;
+ }
+
+ cgltf_result (*file_read)(const struct cgltf_memory_options*, const struct cgltf_file_options*, const char*, cgltf_size*, void**) = options->file.read ? options->file.read : &cgltf_default_file_read;
+ void (*file_release)(const struct cgltf_memory_options*, const struct cgltf_file_options*, void* data) = options->file.release ? options->file.release : cgltf_default_file_release;
+
+ void* file_data = NULL;
+ cgltf_size file_size = 0;
+ cgltf_result result = file_read(&options->memory, &options->file, path, &file_size, &file_data);
+ if (result != cgltf_result_success)
+ {
+ return result;
+ }
+
+ result = cgltf_parse(options, file_data, file_size, out_data);
+
+ if (result != cgltf_result_success)
+ {
+ file_release(&options->memory, &options->file, file_data);
+ return result;
+ }
+
+ (*out_data)->file_data = file_data;
+
+ return cgltf_result_success;
+}
+
+static void cgltf_combine_paths(char* path, const char* base, const char* uri)
+{
+ const char* s0 = strrchr(base, '/');
+ const char* s1 = strrchr(base, '\\');
+ const char* slash = s0 ? (s1 && s1 > s0 ? s1 : s0) : s1;
+
+ if (slash)
+ {
+ size_t prefix = slash - base + 1;
+
+ strncpy(path, base, prefix);
+ strcpy(path + prefix, uri);
+ }
+ else
+ {
+ strcpy(path, uri);
+ }
+}
+
+static cgltf_result cgltf_load_buffer_file(const cgltf_options* options, cgltf_size size, const char* uri, const char* gltf_path, void** out_data)
+{
+ void* (*memory_alloc)(void*, cgltf_size) = options->memory.alloc_func ? options->memory.alloc_func : &cgltf_default_alloc;
+ void (*memory_free)(void*, void*) = options->memory.free_func ? options->memory.free_func : &cgltf_default_free;
+ cgltf_result (*file_read)(const struct cgltf_memory_options*, const struct cgltf_file_options*, const char*, cgltf_size*, void**) = options->file.read ? options->file.read : &cgltf_default_file_read;
+
+ char* path = (char*)memory_alloc(options->memory.user_data, strlen(uri) + strlen(gltf_path) + 1);
+ if (!path)
+ {
+ return cgltf_result_out_of_memory;
+ }
+
+ cgltf_combine_paths(path, gltf_path, uri);
+
+ // after combining, the tail of the resulting path is a uri; decode_uri converts it into path
+ cgltf_decode_uri(path + strlen(path) - strlen(uri));
+
+ void* file_data = NULL;
+ cgltf_result result = file_read(&options->memory, &options->file, path, &size, &file_data);
+
+ memory_free(options->memory.user_data, path);
+
+ *out_data = (result == cgltf_result_success) ? file_data : NULL;
+
+ return result;
+}
+
+cgltf_result cgltf_load_buffer_base64(const cgltf_options* options, cgltf_size size, const char* base64, void** out_data)
+{
+ void* (*memory_alloc)(void*, cgltf_size) = options->memory.alloc_func ? options->memory.alloc_func : &cgltf_default_alloc;
+ void (*memory_free)(void*, void*) = options->memory.free_func ? options->memory.free_func : &cgltf_default_free;
+
+ unsigned char* data = (unsigned char*)memory_alloc(options->memory.user_data, size);
+ if (!data)
+ {
+ return cgltf_result_out_of_memory;
+ }
+
+ unsigned int buffer = 0;
+ unsigned int buffer_bits = 0;
+
+ for (cgltf_size i = 0; i < size; ++i)
+ {
+ while (buffer_bits < 8)
+ {
+ char ch = *base64++;
+
+ int index =
+ (unsigned)(ch - 'A') < 26 ? (ch - 'A') :
+ (unsigned)(ch - 'a') < 26 ? (ch - 'a') + 26 :
+ (unsigned)(ch - '0') < 10 ? (ch - '0') + 52 :
+ ch == '+' ? 62 :
+ ch == '/' ? 63 :
+ -1;
+
+ if (index < 0)
+ {
+ memory_free(options->memory.user_data, data);
+ return cgltf_result_io_error;
+ }
+
+ buffer = (buffer << 6) | index;
+ buffer_bits += 6;
+ }
+
+ data[i] = (unsigned char)(buffer >> (buffer_bits - 8));
+ buffer_bits -= 8;
+ }
+
+ *out_data = data;
+
+ return cgltf_result_success;
+}
+
+static int cgltf_unhex(char ch)
+{
+ return
+ (unsigned)(ch - '0') < 10 ? (ch - '0') :
+ (unsigned)(ch - 'A') < 6 ? (ch - 'A') + 10 :
+ (unsigned)(ch - 'a') < 6 ? (ch - 'a') + 10 :
+ -1;
+}
+
+cgltf_size cgltf_decode_string(char* string)
+{
+ char* read = string + strcspn(string, "\\");
+ if (*read == 0)
+ {
+ return read - string;
+ }
+ char* write = string;
+ char* last = string;
+
+ for (;;)
+ {
+ // Copy characters since last escaped sequence
+ cgltf_size written = read - last;
+ memmove(write, last, written);
+ write += written;
+
+ if (*read++ == 0)
+ {
+ break;
+ }
+
+ // jsmn already checked that all escape sequences are valid
+ switch (*read++)
+ {
+ case '\"': *write++ = '\"'; break;
+ case '/': *write++ = '/'; break;
+ case '\\': *write++ = '\\'; break;
+ case 'b': *write++ = '\b'; break;
+ case 'f': *write++ = '\f'; break;
+ case 'r': *write++ = '\r'; break;
+ case 'n': *write++ = '\n'; break;
+ case 't': *write++ = '\t'; break;
+ case 'u':
+ {
+ // UCS-2 codepoint \uXXXX to UTF-8
+ int character = 0;
+ for (cgltf_size i = 0; i < 4; ++i)
+ {
+ character = (character << 4) + cgltf_unhex(*read++);
+ }
+
+ if (character <= 0x7F)
+ {
+ *write++ = character & 0xFF;
+ }
+ else if (character <= 0x7FF)
+ {
+ *write++ = 0xC0 | ((character >> 6) & 0xFF);
+ *write++ = 0x80 | (character & 0x3F);
+ }
+ else
+ {
+ *write++ = 0xE0 | ((character >> 12) & 0xFF);
+ *write++ = 0x80 | ((character >> 6) & 0x3F);
+ *write++ = 0x80 | (character & 0x3F);
+ }
+ break;
+ }
+ default:
+ break;
+ }
+
+ last = read;
+ read += strcspn(read, "\\");
+ }
+
+ *write = 0;
+ return write - string;
+}
+
+cgltf_size cgltf_decode_uri(char* uri)
+{
+ char* write = uri;
+ char* i = uri;
+
+ while (*i)
+ {
+ if (*i == '%')
+ {
+ int ch1 = cgltf_unhex(i[1]);
+
+ if (ch1 >= 0)
+ {
+ int ch2 = cgltf_unhex(i[2]);
+
+ if (ch2 >= 0)
+ {
+ *write++ = (char)(ch1 * 16 + ch2);
+ i += 3;
+ continue;
+ }
+ }
+ }
+
+ *write++ = *i++;
+ }
+
+ *write = 0;
+ return write - uri;
+}
+
+cgltf_result cgltf_load_buffers(const cgltf_options* options, cgltf_data* data, const char* gltf_path)
+{
+ if (options == NULL)
+ {
+ return cgltf_result_invalid_options;
+ }
+
+ if (data->buffers_count && data->buffers[0].data == NULL && data->buffers[0].uri == NULL && data->bin)
+ {
+ if (data->bin_size < data->buffers[0].size)
+ {
+ return cgltf_result_data_too_short;
+ }
+
+ data->buffers[0].data = (void*)data->bin;
+ data->buffers[0].data_free_method = cgltf_data_free_method_none;
+ }
+
+ for (cgltf_size i = 0; i < data->buffers_count; ++i)
+ {
+ if (data->buffers[i].data)
+ {
+ continue;
+ }
+
+ const char* uri = data->buffers[i].uri;
+
+ if (uri == NULL)
+ {
+ continue;
+ }
+
+ if (strncmp(uri, "data:", 5) == 0)
+ {
+ const char* comma = strchr(uri, ',');
+
+ if (comma && comma - uri >= 7 && strncmp(comma - 7, ";base64", 7) == 0)
+ {
+ cgltf_result res = cgltf_load_buffer_base64(options, data->buffers[i].size, comma + 1, &data->buffers[i].data);
+ data->buffers[i].data_free_method = cgltf_data_free_method_memory_free;
+
+ if (res != cgltf_result_success)
+ {
+ return res;
+ }
+ }
+ else
+ {
+ return cgltf_result_unknown_format;
+ }
+ }
+ else if (strstr(uri, "://") == NULL && gltf_path)
+ {
+ cgltf_result res = cgltf_load_buffer_file(options, data->buffers[i].size, uri, gltf_path, &data->buffers[i].data);
+ data->buffers[i].data_free_method = cgltf_data_free_method_file_release;
+
+ if (res != cgltf_result_success)
+ {
+ return res;
+ }
+ }
+ else
+ {
+ return cgltf_result_unknown_format;
+ }
+ }
+
+ return cgltf_result_success;
+}
+
+static cgltf_size cgltf_calc_index_bound(cgltf_buffer_view* buffer_view, cgltf_size offset, cgltf_component_type component_type, cgltf_size count)
+{
+ char* data = (char*)buffer_view->buffer->data + offset + buffer_view->offset;
+ cgltf_size bound = 0;
+
+ switch (component_type)
+ {
+ case cgltf_component_type_r_8u:
+ for (size_t i = 0; i < count; ++i)
+ {
+ cgltf_size v = ((unsigned char*)data)[i];
+ bound = bound > v ? bound : v;
+ }
+ break;
+
+ case cgltf_component_type_r_16u:
+ for (size_t i = 0; i < count; ++i)
+ {
+ cgltf_size v = ((unsigned short*)data)[i];
+ bound = bound > v ? bound : v;
+ }
+ break;
+
+ case cgltf_component_type_r_32u:
+ for (size_t i = 0; i < count; ++i)
+ {
+ cgltf_size v = ((unsigned int*)data)[i];
+ bound = bound > v ? bound : v;
+ }
+ break;
+
+ default:
+ ;
+ }
+
+ return bound;
+}
+
+#if CGLTF_VALIDATE_ENABLE_ASSERTS
+#define CGLTF_ASSERT_IF(cond, result) assert(!(cond)); if (cond) return result;
+#else
+#define CGLTF_ASSERT_IF(cond, result) if (cond) return result;
+#endif
+
+cgltf_result cgltf_validate(cgltf_data* data)
+{
+ for (cgltf_size i = 0; i < data->accessors_count; ++i)
+ {
+ cgltf_accessor* accessor = &data->accessors[i];
+
+ CGLTF_ASSERT_IF(data->accessors[i].component_type == cgltf_component_type_invalid, cgltf_result_invalid_gltf);
+ CGLTF_ASSERT_IF(data->accessors[i].type == cgltf_type_invalid, cgltf_result_invalid_gltf);
+
+ cgltf_size element_size = cgltf_calc_size(accessor->type, accessor->component_type);
+
+ if (accessor->buffer_view)
+ {
+ cgltf_size req_size = accessor->offset + accessor->stride * (accessor->count - 1) + element_size;
+
+ CGLTF_ASSERT_IF(accessor->buffer_view->size < req_size, cgltf_result_data_too_short);
+ }
+
+ if (accessor->is_sparse)
+ {
+ cgltf_accessor_sparse* sparse = &accessor->sparse;
+
+ cgltf_size indices_component_size = cgltf_component_size(sparse->indices_component_type);
+ cgltf_size indices_req_size = sparse->indices_byte_offset + indices_component_size * sparse->count;
+ cgltf_size values_req_size = sparse->values_byte_offset + element_size * sparse->count;
+
+ CGLTF_ASSERT_IF(sparse->indices_buffer_view->size < indices_req_size ||
+ sparse->values_buffer_view->size < values_req_size, cgltf_result_data_too_short);
+
+ CGLTF_ASSERT_IF(sparse->indices_component_type != cgltf_component_type_r_8u &&
+ sparse->indices_component_type != cgltf_component_type_r_16u &&
+ sparse->indices_component_type != cgltf_component_type_r_32u, cgltf_result_invalid_gltf);
+
+ if (sparse->indices_buffer_view->buffer->data)
+ {
+ cgltf_size index_bound = cgltf_calc_index_bound(sparse->indices_buffer_view, sparse->indices_byte_offset, sparse->indices_component_type, sparse->count);
+
+ CGLTF_ASSERT_IF(index_bound >= accessor->count, cgltf_result_data_too_short);
+ }
+ }
+ }
+
+ for (cgltf_size i = 0; i < data->buffer_views_count; ++i)
+ {
+ cgltf_size req_size = data->buffer_views[i].offset + data->buffer_views[i].size;
+
+ CGLTF_ASSERT_IF(data->buffer_views[i].buffer && data->buffer_views[i].buffer->size < req_size, cgltf_result_data_too_short);
+
+ if (data->buffer_views[i].has_meshopt_compression)
+ {
+ cgltf_meshopt_compression* mc = &data->buffer_views[i].meshopt_compression;
+
+ CGLTF_ASSERT_IF(mc->buffer == NULL || mc->buffer->size < mc->offset + mc->size, cgltf_result_data_too_short);
+
+ CGLTF_ASSERT_IF(data->buffer_views[i].stride && mc->stride != data->buffer_views[i].stride, cgltf_result_invalid_gltf);
+
+ CGLTF_ASSERT_IF(data->buffer_views[i].size != mc->stride * mc->count, cgltf_result_invalid_gltf);
+
+ CGLTF_ASSERT_IF(mc->mode == cgltf_meshopt_compression_mode_invalid, cgltf_result_invalid_gltf);
+
+ CGLTF_ASSERT_IF(mc->mode == cgltf_meshopt_compression_mode_attributes && !(mc->stride % 4 == 0 && mc->stride <= 256), cgltf_result_invalid_gltf);
+
+ CGLTF_ASSERT_IF(mc->mode == cgltf_meshopt_compression_mode_triangles && mc->count % 3 != 0, cgltf_result_invalid_gltf);
+
+ CGLTF_ASSERT_IF((mc->mode == cgltf_meshopt_compression_mode_triangles || mc->mode == cgltf_meshopt_compression_mode_indices) && mc->stride != 2 && mc->stride != 4, cgltf_result_invalid_gltf);
+
+ CGLTF_ASSERT_IF((mc->mode == cgltf_meshopt_compression_mode_triangles || mc->mode == cgltf_meshopt_compression_mode_indices) && mc->filter != cgltf_meshopt_compression_filter_none, cgltf_result_invalid_gltf);
+
+ CGLTF_ASSERT_IF(mc->filter == cgltf_meshopt_compression_filter_octahedral && mc->stride != 4 && mc->stride != 8, cgltf_result_invalid_gltf);
+
+ CGLTF_ASSERT_IF(mc->filter == cgltf_meshopt_compression_filter_quaternion && mc->stride != 8, cgltf_result_invalid_gltf);
+ }
+ }
+
+ for (cgltf_size i = 0; i < data->meshes_count; ++i)
+ {
+ if (data->meshes[i].weights)
+ {
+ CGLTF_ASSERT_IF(data->meshes[i].primitives_count && data->meshes[i].primitives[0].targets_count != data->meshes[i].weights_count, cgltf_result_invalid_gltf);
+ }
+
+ if (data->meshes[i].target_names)
+ {
+ CGLTF_ASSERT_IF(data->meshes[i].primitives_count && data->meshes[i].primitives[0].targets_count != data->meshes[i].target_names_count, cgltf_result_invalid_gltf);
+ }
+
+ for (cgltf_size j = 0; j < data->meshes[i].primitives_count; ++j)
+ {
+ CGLTF_ASSERT_IF(data->meshes[i].primitives[j].type == cgltf_primitive_type_invalid, cgltf_result_invalid_gltf);
+ CGLTF_ASSERT_IF(data->meshes[i].primitives[j].targets_count != data->meshes[i].primitives[0].targets_count, cgltf_result_invalid_gltf);
+
+ CGLTF_ASSERT_IF(data->meshes[i].primitives[j].attributes_count == 0, cgltf_result_invalid_gltf);
+
+ cgltf_accessor* first = data->meshes[i].primitives[j].attributes[0].data;
+
+ CGLTF_ASSERT_IF(first->count == 0, cgltf_result_invalid_gltf);
+
+ for (cgltf_size k = 0; k < data->meshes[i].primitives[j].attributes_count; ++k)
+ {
+ CGLTF_ASSERT_IF(data->meshes[i].primitives[j].attributes[k].data->count != first->count, cgltf_result_invalid_gltf);
+ }
+
+ for (cgltf_size k = 0; k < data->meshes[i].primitives[j].targets_count; ++k)
+ {
+ for (cgltf_size m = 0; m < data->meshes[i].primitives[j].targets[k].attributes_count; ++m)
+ {
+ CGLTF_ASSERT_IF(data->meshes[i].primitives[j].targets[k].attributes[m].data->count != first->count, cgltf_result_invalid_gltf);
+ }
+ }
+
+ cgltf_accessor* indices = data->meshes[i].primitives[j].indices;
+
+ CGLTF_ASSERT_IF(indices &&
+ indices->component_type != cgltf_component_type_r_8u &&
+ indices->component_type != cgltf_component_type_r_16u &&
+ indices->component_type != cgltf_component_type_r_32u, cgltf_result_invalid_gltf);
+
+ CGLTF_ASSERT_IF(indices && indices->type != cgltf_type_scalar, cgltf_result_invalid_gltf);
+ CGLTF_ASSERT_IF(indices && indices->stride != cgltf_component_size(indices->component_type), cgltf_result_invalid_gltf);
+
+ if (indices && indices->buffer_view && indices->buffer_view->buffer->data)
+ {
+ cgltf_size index_bound = cgltf_calc_index_bound(indices->buffer_view, indices->offset, indices->component_type, indices->count);
+
+ CGLTF_ASSERT_IF(index_bound >= first->count, cgltf_result_data_too_short);
+ }
+
+ for (cgltf_size k = 0; k < data->meshes[i].primitives[j].mappings_count; ++k)
+ {
+ CGLTF_ASSERT_IF(data->meshes[i].primitives[j].mappings[k].variant >= data->variants_count, cgltf_result_invalid_gltf);
+ }
+ }
+ }
+
+ for (cgltf_size i = 0; i < data->nodes_count; ++i)
+ {
+ if (data->nodes[i].weights && data->nodes[i].mesh)
+ {
+ CGLTF_ASSERT_IF(data->nodes[i].mesh->primitives_count && data->nodes[i].mesh->primitives[0].targets_count != data->nodes[i].weights_count, cgltf_result_invalid_gltf);
+ }
+
+ if (data->nodes[i].has_mesh_gpu_instancing)
+ {
+ CGLTF_ASSERT_IF(data->nodes[i].mesh == NULL, cgltf_result_invalid_gltf);
+ CGLTF_ASSERT_IF(data->nodes[i].mesh_gpu_instancing.attributes_count == 0, cgltf_result_invalid_gltf);
+
+ cgltf_accessor* first = data->nodes[i].mesh_gpu_instancing.attributes[0].data;
+
+ for (cgltf_size k = 0; k < data->nodes[i].mesh_gpu_instancing.attributes_count; ++k)
+ {
+ CGLTF_ASSERT_IF(data->nodes[i].mesh_gpu_instancing.attributes[k].data->count != first->count, cgltf_result_invalid_gltf);
+ }
+ }
+ }
+
+ for (cgltf_size i = 0; i < data->nodes_count; ++i)
+ {
+ cgltf_node* p1 = data->nodes[i].parent;
+ cgltf_node* p2 = p1 ? p1->parent : NULL;
+
+ while (p1 && p2)
+ {
+ CGLTF_ASSERT_IF(p1 == p2, cgltf_result_invalid_gltf);
+
+ p1 = p1->parent;
+ p2 = p2->parent ? p2->parent->parent : NULL;
+ }
+ }
+
+ for (cgltf_size i = 0; i < data->scenes_count; ++i)
+ {
+ for (cgltf_size j = 0; j < data->scenes[i].nodes_count; ++j)
+ {
+ CGLTF_ASSERT_IF(data->scenes[i].nodes[j]->parent, cgltf_result_invalid_gltf);
+ }
+ }
+
+ for (cgltf_size i = 0; i < data->animations_count; ++i)
+ {
+ for (cgltf_size j = 0; j < data->animations[i].channels_count; ++j)
+ {
+ cgltf_animation_channel* channel = &data->animations[i].channels[j];
+
+ if (!channel->target_node)
+ {
+ continue;
+ }
+
+ cgltf_size components = 1;
+
+ if (channel->target_path == cgltf_animation_path_type_weights)
+ {
+ CGLTF_ASSERT_IF(!channel->target_node->mesh || !channel->target_node->mesh->primitives_count, cgltf_result_invalid_gltf);
+
+ components = channel->target_node->mesh->primitives[0].targets_count;
+ }
+
+ cgltf_size values = channel->sampler->interpolation == cgltf_interpolation_type_cubic_spline ? 3 : 1;
+
+ CGLTF_ASSERT_IF(channel->sampler->input->count * components * values != channel->sampler->output->count, cgltf_result_invalid_gltf);
+ }
+ }
+
+ for (cgltf_size i = 0; i < data->variants_count; ++i)
+ {
+ CGLTF_ASSERT_IF(!data->variants[i].name, cgltf_result_invalid_gltf);
+ }
+
+ return cgltf_result_success;
+}
+
+cgltf_result cgltf_copy_extras_json(const cgltf_data* data, const cgltf_extras* extras, char* dest, cgltf_size* dest_size)
+{
+ cgltf_size json_size = extras->end_offset - extras->start_offset;
+
+ if (!dest)
+ {
+ if (dest_size)
+ {
+ *dest_size = json_size + 1;
+ return cgltf_result_success;
+ }
+ return cgltf_result_invalid_options;
+ }
+
+ if (*dest_size + 1 < json_size)
+ {
+ strncpy(dest, data->json + extras->start_offset, *dest_size - 1);
+ dest[*dest_size - 1] = 0;
+ }
+ else
+ {
+ strncpy(dest, data->json + extras->start_offset, json_size);
+ dest[json_size] = 0;
+ }
+
+ return cgltf_result_success;
+}
+
+static void cgltf_free_extras(cgltf_data* data, cgltf_extras* extras)
+{
+ data->memory.free_func(data->memory.user_data, extras->data);
+}
+
+static void cgltf_free_extensions(cgltf_data* data, cgltf_extension* extensions, cgltf_size extensions_count)
+{
+ for (cgltf_size i = 0; i < extensions_count; ++i)
+ {
+ data->memory.free_func(data->memory.user_data, extensions[i].name);
+ data->memory.free_func(data->memory.user_data, extensions[i].data);
+ }
+ data->memory.free_func(data->memory.user_data, extensions);
+}
+
+void cgltf_free(cgltf_data* data)
+{
+ if (!data)
+ {
+ return;
+ }
+
+ void (*file_release)(const struct cgltf_memory_options*, const struct cgltf_file_options*, void* data) = data->file.release ? data->file.release : cgltf_default_file_release;
+
+ data->memory.free_func(data->memory.user_data, data->asset.copyright);
+ data->memory.free_func(data->memory.user_data, data->asset.generator);
+ data->memory.free_func(data->memory.user_data, data->asset.version);
+ data->memory.free_func(data->memory.user_data, data->asset.min_version);
+
+ cgltf_free_extensions(data, data->asset.extensions, data->asset.extensions_count);
+ cgltf_free_extras(data, &data->asset.extras);
+
+ for (cgltf_size i = 0; i < data->accessors_count; ++i)
+ {
+ data->memory.free_func(data->memory.user_data, data->accessors[i].name);
+
+ cgltf_free_extensions(data, data->accessors[i].extensions, data->accessors[i].extensions_count);
+ cgltf_free_extras(data, &data->accessors[i].extras);
+ }
+ data->memory.free_func(data->memory.user_data, data->accessors);
+
+ for (cgltf_size i = 0; i < data->buffer_views_count; ++i)
+ {
+ data->memory.free_func(data->memory.user_data, data->buffer_views[i].name);
+ data->memory.free_func(data->memory.user_data, data->buffer_views[i].data);
+
+ cgltf_free_extensions(data, data->buffer_views[i].extensions, data->buffer_views[i].extensions_count);
+ cgltf_free_extras(data, &data->buffer_views[i].extras);
+ }
+ data->memory.free_func(data->memory.user_data, data->buffer_views);
+
+ for (cgltf_size i = 0; i < data->buffers_count; ++i)
+ {
+ data->memory.free_func(data->memory.user_data, data->buffers[i].name);
+
+ if (data->buffers[i].data_free_method == cgltf_data_free_method_file_release)
+ {
+ file_release(&data->memory, &data->file, data->buffers[i].data);
+ }
+ else if (data->buffers[i].data_free_method == cgltf_data_free_method_memory_free)
+ {
+ data->memory.free_func(data->memory.user_data, data->buffers[i].data);
+ }
+
+ data->memory.free_func(data->memory.user_data, data->buffers[i].uri);
+
+ cgltf_free_extensions(data, data->buffers[i].extensions, data->buffers[i].extensions_count);
+ cgltf_free_extras(data, &data->buffers[i].extras);
+ }
+ data->memory.free_func(data->memory.user_data, data->buffers);
+
+ for (cgltf_size i = 0; i < data->meshes_count; ++i)
+ {
+ data->memory.free_func(data->memory.user_data, data->meshes[i].name);
+
+ for (cgltf_size j = 0; j < data->meshes[i].primitives_count; ++j)
+ {
+ for (cgltf_size k = 0; k < data->meshes[i].primitives[j].attributes_count; ++k)
+ {
+ data->memory.free_func(data->memory.user_data, data->meshes[i].primitives[j].attributes[k].name);
+ }
+
+ data->memory.free_func(data->memory.user_data, data->meshes[i].primitives[j].attributes);
+
+ for (cgltf_size k = 0; k < data->meshes[i].primitives[j].targets_count; ++k)
+ {
+ for (cgltf_size m = 0; m < data->meshes[i].primitives[j].targets[k].attributes_count; ++m)
+ {
+ data->memory.free_func(data->memory.user_data, data->meshes[i].primitives[j].targets[k].attributes[m].name);
+ }
+
+ data->memory.free_func(data->memory.user_data, data->meshes[i].primitives[j].targets[k].attributes);
+ }
+
+ data->memory.free_func(data->memory.user_data, data->meshes[i].primitives[j].targets);
+
+ if (data->meshes[i].primitives[j].has_draco_mesh_compression)
+ {
+ for (cgltf_size k = 0; k < data->meshes[i].primitives[j].draco_mesh_compression.attributes_count; ++k)
+ {
+ data->memory.free_func(data->memory.user_data, data->meshes[i].primitives[j].draco_mesh_compression.attributes[k].name);
+ }
+
+ data->memory.free_func(data->memory.user_data, data->meshes[i].primitives[j].draco_mesh_compression.attributes);
+ }
+
+ for (cgltf_size k = 0; k < data->meshes[i].primitives[j].mappings_count; ++k)
+ {
+ cgltf_free_extras(data, &data->meshes[i].primitives[j].mappings[k].extras);
+ }
+
+ data->memory.free_func(data->memory.user_data, data->meshes[i].primitives[j].mappings);
+
+ cgltf_free_extensions(data, data->meshes[i].primitives[j].extensions, data->meshes[i].primitives[j].extensions_count);
+ cgltf_free_extras(data, &data->meshes[i].primitives[j].extras);
+ }
+
+ data->memory.free_func(data->memory.user_data, data->meshes[i].primitives);
+ data->memory.free_func(data->memory.user_data, data->meshes[i].weights);
+
+ for (cgltf_size j = 0; j < data->meshes[i].target_names_count; ++j)
+ {
+ data->memory.free_func(data->memory.user_data, data->meshes[i].target_names[j]);
+ }
+
+ cgltf_free_extensions(data, data->meshes[i].extensions, data->meshes[i].extensions_count);
+ cgltf_free_extras(data, &data->meshes[i].extras);
+
+ data->memory.free_func(data->memory.user_data, data->meshes[i].target_names);
+ }
+
+ data->memory.free_func(data->memory.user_data, data->meshes);
+
+ for (cgltf_size i = 0; i < data->materials_count; ++i)
+ {
+ data->memory.free_func(data->memory.user_data, data->materials[i].name);
+
+ cgltf_free_extensions(data, data->materials[i].extensions, data->materials[i].extensions_count);
+ cgltf_free_extras(data, &data->materials[i].extras);
+ }
+
+ data->memory.free_func(data->memory.user_data, data->materials);
+
+ for (cgltf_size i = 0; i < data->images_count; ++i)
+ {
+ data->memory.free_func(data->memory.user_data, data->images[i].name);
+ data->memory.free_func(data->memory.user_data, data->images[i].uri);
+ data->memory.free_func(data->memory.user_data, data->images[i].mime_type);
+
+ cgltf_free_extensions(data, data->images[i].extensions, data->images[i].extensions_count);
+ cgltf_free_extras(data, &data->images[i].extras);
+ }
+
+ data->memory.free_func(data->memory.user_data, data->images);
+
+ for (cgltf_size i = 0; i < data->textures_count; ++i)
+ {
+ data->memory.free_func(data->memory.user_data, data->textures[i].name);
+
+ cgltf_free_extensions(data, data->textures[i].extensions, data->textures[i].extensions_count);
+ cgltf_free_extras(data, &data->textures[i].extras);
+ }
+
+ data->memory.free_func(data->memory.user_data, data->textures);
+
+ for (cgltf_size i = 0; i < data->samplers_count; ++i)
+ {
+ data->memory.free_func(data->memory.user_data, data->samplers[i].name);
+
+ cgltf_free_extensions(data, data->samplers[i].extensions, data->samplers[i].extensions_count);
+ cgltf_free_extras(data, &data->samplers[i].extras);
+ }
+
+ data->memory.free_func(data->memory.user_data, data->samplers);
+
+ for (cgltf_size i = 0; i < data->skins_count; ++i)
+ {
+ data->memory.free_func(data->memory.user_data, data->skins[i].name);
+ data->memory.free_func(data->memory.user_data, data->skins[i].joints);
+
+ cgltf_free_extensions(data, data->skins[i].extensions, data->skins[i].extensions_count);
+ cgltf_free_extras(data, &data->skins[i].extras);
+ }
+
+ data->memory.free_func(data->memory.user_data, data->skins);
+
+ for (cgltf_size i = 0; i < data->cameras_count; ++i)
+ {
+ data->memory.free_func(data->memory.user_data, data->cameras[i].name);
+
+ if (data->cameras[i].type == cgltf_camera_type_perspective)
+ {
+ cgltf_free_extras(data, &data->cameras[i].data.perspective.extras);
+ }
+ else if (data->cameras[i].type == cgltf_camera_type_orthographic)
+ {
+ cgltf_free_extras(data, &data->cameras[i].data.orthographic.extras);
+ }
+
+ cgltf_free_extensions(data, data->cameras[i].extensions, data->cameras[i].extensions_count);
+ cgltf_free_extras(data, &data->cameras[i].extras);
+ }
+
+ data->memory.free_func(data->memory.user_data, data->cameras);
+
+ for (cgltf_size i = 0; i < data->lights_count; ++i)
+ {
+ data->memory.free_func(data->memory.user_data, data->lights[i].name);
+
+ cgltf_free_extras(data, &data->lights[i].extras);
+ }
+
+ data->memory.free_func(data->memory.user_data, data->lights);
+
+ for (cgltf_size i = 0; i < data->nodes_count; ++i)
+ {
+ data->memory.free_func(data->memory.user_data, data->nodes[i].name);
+ data->memory.free_func(data->memory.user_data, data->nodes[i].children);
+ data->memory.free_func(data->memory.user_data, data->nodes[i].weights);
+
+ if (data->nodes[i].has_mesh_gpu_instancing)
+ {
+ for (cgltf_size j = 0; j < data->nodes[i].mesh_gpu_instancing.attributes_count; ++j)
+ {
+ data->memory.free_func(data->memory.user_data, data->nodes[i].mesh_gpu_instancing.attributes[j].name);
+ }
+
+ data->memory.free_func(data->memory.user_data, data->nodes[i].mesh_gpu_instancing.attributes);
+ }
+
+ cgltf_free_extensions(data, data->nodes[i].extensions, data->nodes[i].extensions_count);
+ cgltf_free_extras(data, &data->nodes[i].extras);
+ }
+
+ data->memory.free_func(data->memory.user_data, data->nodes);
+
+ for (cgltf_size i = 0; i < data->scenes_count; ++i)
+ {
+ data->memory.free_func(data->memory.user_data, data->scenes[i].name);
+ data->memory.free_func(data->memory.user_data, data->scenes[i].nodes);
+
+ cgltf_free_extensions(data, data->scenes[i].extensions, data->scenes[i].extensions_count);
+ cgltf_free_extras(data, &data->scenes[i].extras);
+ }
+
+ data->memory.free_func(data->memory.user_data, data->scenes);
+
+ for (cgltf_size i = 0; i < data->animations_count; ++i)
+ {
+ data->memory.free_func(data->memory.user_data, data->animations[i].name);
+ for (cgltf_size j = 0; j < data->animations[i].samplers_count; ++j)
+ {
+ cgltf_free_extensions(data, data->animations[i].samplers[j].extensions, data->animations[i].samplers[j].extensions_count);
+ cgltf_free_extras(data, &data->animations[i].samplers[j].extras);
+ }
+ data->memory.free_func(data->memory.user_data, data->animations[i].samplers);
+
+ for (cgltf_size j = 0; j < data->animations[i].channels_count; ++j)
+ {
+ cgltf_free_extensions(data, data->animations[i].channels[j].extensions, data->animations[i].channels[j].extensions_count);
+ cgltf_free_extras(data, &data->animations[i].channels[j].extras);
+ }
+ data->memory.free_func(data->memory.user_data, data->animations[i].channels);
+
+ cgltf_free_extensions(data, data->animations[i].extensions, data->animations[i].extensions_count);
+ cgltf_free_extras(data, &data->animations[i].extras);
+ }
+
+ data->memory.free_func(data->memory.user_data, data->animations);
+
+ for (cgltf_size i = 0; i < data->variants_count; ++i)
+ {
+ data->memory.free_func(data->memory.user_data, data->variants[i].name);
+
+ cgltf_free_extras(data, &data->variants[i].extras);
+ }
+
+ data->memory.free_func(data->memory.user_data, data->variants);
+
+ cgltf_free_extensions(data, data->data_extensions, data->data_extensions_count);
+ cgltf_free_extras(data, &data->extras);
+
+ for (cgltf_size i = 0; i < data->extensions_used_count; ++i)
+ {
+ data->memory.free_func(data->memory.user_data, data->extensions_used[i]);
+ }
+
+ data->memory.free_func(data->memory.user_data, data->extensions_used);
+
+ for (cgltf_size i = 0; i < data->extensions_required_count; ++i)
+ {
+ data->memory.free_func(data->memory.user_data, data->extensions_required[i]);
+ }
+
+ data->memory.free_func(data->memory.user_data, data->extensions_required);
+
+ file_release(&data->memory, &data->file, data->file_data);
+
+ data->memory.free_func(data->memory.user_data, data);
+}
+
+void cgltf_node_transform_local(const cgltf_node* node, cgltf_float* out_matrix)
+{
+ cgltf_float* lm = out_matrix;
+
+ if (node->has_matrix)
+ {
+ memcpy(lm, node->matrix, sizeof(float) * 16);
+ }
+ else
+ {
+ float tx = node->translation[0];
+ float ty = node->translation[1];
+ float tz = node->translation[2];
+
+ float qx = node->rotation[0];
+ float qy = node->rotation[1];
+ float qz = node->rotation[2];
+ float qw = node->rotation[3];
+
+ float sx = node->scale[0];
+ float sy = node->scale[1];
+ float sz = node->scale[2];
+
+ lm[0] = (1 - 2 * qy*qy - 2 * qz*qz) * sx;
+ lm[1] = (2 * qx*qy + 2 * qz*qw) * sx;
+ lm[2] = (2 * qx*qz - 2 * qy*qw) * sx;
+ lm[3] = 0.f;
+
+ lm[4] = (2 * qx*qy - 2 * qz*qw) * sy;
+ lm[5] = (1 - 2 * qx*qx - 2 * qz*qz) * sy;
+ lm[6] = (2 * qy*qz + 2 * qx*qw) * sy;
+ lm[7] = 0.f;
+
+ lm[8] = (2 * qx*qz + 2 * qy*qw) * sz;
+ lm[9] = (2 * qy*qz - 2 * qx*qw) * sz;
+ lm[10] = (1 - 2 * qx*qx - 2 * qy*qy) * sz;
+ lm[11] = 0.f;
+
+ lm[12] = tx;
+ lm[13] = ty;
+ lm[14] = tz;
+ lm[15] = 1.f;
+ }
+}
+
+void cgltf_node_transform_world(const cgltf_node* node, cgltf_float* out_matrix)
+{
+ cgltf_float* lm = out_matrix;
+ cgltf_node_transform_local(node, lm);
+
+ const cgltf_node* parent = node->parent;
+
+ while (parent)
+ {
+ float pm[16];
+ cgltf_node_transform_local(parent, pm);
+
+ for (int i = 0; i < 4; ++i)
+ {
+ float l0 = lm[i * 4 + 0];
+ float l1 = lm[i * 4 + 1];
+ float l2 = lm[i * 4 + 2];
+
+ float r0 = l0 * pm[0] + l1 * pm[4] + l2 * pm[8];
+ float r1 = l0 * pm[1] + l1 * pm[5] + l2 * pm[9];
+ float r2 = l0 * pm[2] + l1 * pm[6] + l2 * pm[10];
+
+ lm[i * 4 + 0] = r0;
+ lm[i * 4 + 1] = r1;
+ lm[i * 4 + 2] = r2;
+ }
+
+ lm[12] += pm[12];
+ lm[13] += pm[13];
+ lm[14] += pm[14];
+
+ parent = parent->parent;
+ }
+}
+
+static cgltf_ssize cgltf_component_read_integer(const void* in, cgltf_component_type component_type)
+{
+ switch (component_type)
+ {
+ case cgltf_component_type_r_16:
+ return *((const int16_t*) in);
+ case cgltf_component_type_r_16u:
+ return *((const uint16_t*) in);
+ case cgltf_component_type_r_32u:
+ return *((const uint32_t*) in);
+ case cgltf_component_type_r_8:
+ return *((const int8_t*) in);
+ case cgltf_component_type_r_8u:
+ return *((const uint8_t*) in);
+ default:
+ return 0;
+ }
+}
+
+static cgltf_size cgltf_component_read_index(const void* in, cgltf_component_type component_type)
+{
+ switch (component_type)
+ {
+ case cgltf_component_type_r_16u:
+ return *((const uint16_t*) in);
+ case cgltf_component_type_r_32u:
+ return *((const uint32_t*) in);
+ case cgltf_component_type_r_8u:
+ return *((const uint8_t*) in);
+ default:
+ return 0;
+ }
+}
+
+static cgltf_float cgltf_component_read_float(const void* in, cgltf_component_type component_type, cgltf_bool normalized)
+{
+ if (component_type == cgltf_component_type_r_32f)
+ {
+ return *((const float*) in);
+ }
+
+ if (normalized)
+ {
+ switch (component_type)
+ {
+ // note: glTF spec doesn't currently define normalized conversions for 32-bit integers
+ case cgltf_component_type_r_16:
+ return *((const int16_t*) in) / (cgltf_float)32767;
+ case cgltf_component_type_r_16u:
+ return *((const uint16_t*) in) / (cgltf_float)65535;
+ case cgltf_component_type_r_8:
+ return *((const int8_t*) in) / (cgltf_float)127;
+ case cgltf_component_type_r_8u:
+ return *((const uint8_t*) in) / (cgltf_float)255;
+ default:
+ return 0;
+ }
+ }
+
+ return (cgltf_float)cgltf_component_read_integer(in, component_type);
+}
+
+static cgltf_bool cgltf_element_read_float(const uint8_t* element, cgltf_type type, cgltf_component_type component_type, cgltf_bool normalized, cgltf_float* out, cgltf_size element_size)
+{
+ cgltf_size num_components = cgltf_num_components(type);
+
+ if (element_size < num_components) {
+ return 0;
+ }
+
+ // There are three special cases for component extraction, see #data-alignment in the 2.0 spec.
+
+ cgltf_size component_size = cgltf_component_size(component_type);
+
+ if (type == cgltf_type_mat2 && component_size == 1)
+ {
+ out[0] = cgltf_component_read_float(element, component_type, normalized);
+ out[1] = cgltf_component_read_float(element + 1, component_type, normalized);
+ out[2] = cgltf_component_read_float(element + 4, component_type, normalized);
+ out[3] = cgltf_component_read_float(element + 5, component_type, normalized);
+ return 1;
+ }
+
+ if (type == cgltf_type_mat3 && component_size == 1)
+ {
+ out[0] = cgltf_component_read_float(element, component_type, normalized);
+ out[1] = cgltf_component_read_float(element + 1, component_type, normalized);
+ out[2] = cgltf_component_read_float(element + 2, component_type, normalized);
+ out[3] = cgltf_component_read_float(element + 4, component_type, normalized);
+ out[4] = cgltf_component_read_float(element + 5, component_type, normalized);
+ out[5] = cgltf_component_read_float(element + 6, component_type, normalized);
+ out[6] = cgltf_component_read_float(element + 8, component_type, normalized);
+ out[7] = cgltf_component_read_float(element + 9, component_type, normalized);
+ out[8] = cgltf_component_read_float(element + 10, component_type, normalized);
+ return 1;
+ }
+
+ if (type == cgltf_type_mat3 && component_size == 2)
+ {
+ out[0] = cgltf_component_read_float(element, component_type, normalized);
+ out[1] = cgltf_component_read_float(element + 2, component_type, normalized);
+ out[2] = cgltf_component_read_float(element + 4, component_type, normalized);
+ out[3] = cgltf_component_read_float(element + 8, component_type, normalized);
+ out[4] = cgltf_component_read_float(element + 10, component_type, normalized);
+ out[5] = cgltf_component_read_float(element + 12, component_type, normalized);
+ out[6] = cgltf_component_read_float(element + 16, component_type, normalized);
+ out[7] = cgltf_component_read_float(element + 18, component_type, normalized);
+ out[8] = cgltf_component_read_float(element + 20, component_type, normalized);
+ return 1;
+ }
+
+ for (cgltf_size i = 0; i < num_components; ++i)
+ {
+ out[i] = cgltf_component_read_float(element + component_size * i, component_type, normalized);
+ }
+ return 1;
+}
+
+const uint8_t* cgltf_buffer_view_data(const cgltf_buffer_view* view)
+{
+ if (view->data)
+ return (const uint8_t*)view->data;
+
+ if (!view->buffer->data)
+ return NULL;
+
+ const uint8_t* result = (const uint8_t*)view->buffer->data;
+ result += view->offset;
+ return result;
+}
+
+const cgltf_accessor* cgltf_find_accessor(const cgltf_primitive* prim, cgltf_attribute_type type, cgltf_int index)
+{
+ for (cgltf_size i = 0; i < prim->attributes_count; ++i)
+ {
+ const cgltf_attribute* attr = &prim->attributes[i];
+ if (attr->type == type && attr->index == index)
+ return attr->data;
+ }
+
+ return NULL;
+}
+
+cgltf_bool cgltf_accessor_read_float(const cgltf_accessor* accessor, cgltf_size index, cgltf_float* out, cgltf_size element_size)
+{
+ if (accessor->is_sparse)
+ {
+ return 0;
+ }
+ if (accessor->buffer_view == NULL)
+ {
+ memset(out, 0, element_size * sizeof(cgltf_float));
+ return 1;
+ }
+ const uint8_t* element = cgltf_buffer_view_data(accessor->buffer_view);
+ if (element == NULL)
+ {
+ return 0;
+ }
+ element += accessor->offset + accessor->stride * index;
+ return cgltf_element_read_float(element, accessor->type, accessor->component_type, accessor->normalized, out, element_size);
+}
+
+cgltf_size cgltf_accessor_unpack_floats(const cgltf_accessor* accessor, cgltf_float* out, cgltf_size float_count)
+{
+ cgltf_size floats_per_element = cgltf_num_components(accessor->type);
+ cgltf_size available_floats = accessor->count * floats_per_element;
+ if (out == NULL)
+ {
+ return available_floats;
+ }
+
+ float_count = available_floats < float_count ? available_floats : float_count;
+ cgltf_size element_count = float_count / floats_per_element;
+
+ // First pass: convert each element in the base accessor.
+ if (accessor->buffer_view == NULL)
+ {
+ memset(out, 0, element_count * floats_per_element * sizeof(cgltf_float));
+ }
+ else
+ {
+ const uint8_t* element = cgltf_buffer_view_data(accessor->buffer_view);
+ if (element == NULL)
+ {
+ return 0;
+ }
+ element += accessor->offset;
+
+ if (accessor->component_type == cgltf_component_type_r_32f && accessor->stride == floats_per_element * sizeof(cgltf_float))
+ {
+ memcpy(out, element, element_count * floats_per_element * sizeof(cgltf_float));
+ }
+ else
+ {
+ cgltf_float* dest = out;
+
+ for (cgltf_size index = 0; index < element_count; index++, dest += floats_per_element, element += accessor->stride)
+ {
+ if (!cgltf_element_read_float(element, accessor->type, accessor->component_type, accessor->normalized, dest, floats_per_element))
+ {
+ return 0;
+ }
+ }
+ }
+ }
+
+ // Second pass: write out each element in the sparse accessor.
+ if (accessor->is_sparse)
+ {
+ const cgltf_accessor_sparse* sparse = &accessor->sparse;
+
+ const uint8_t* index_data = cgltf_buffer_view_data(sparse->indices_buffer_view);
+ const uint8_t* reader_head = cgltf_buffer_view_data(sparse->values_buffer_view);
+
+ if (index_data == NULL || reader_head == NULL)
+ {
+ return 0;
+ }
+
+ index_data += sparse->indices_byte_offset;
+ reader_head += sparse->values_byte_offset;
+
+ cgltf_size index_stride = cgltf_component_size(sparse->indices_component_type);
+ for (cgltf_size reader_index = 0; reader_index < sparse->count; reader_index++, index_data += index_stride, reader_head += accessor->stride)
+ {
+ size_t writer_index = cgltf_component_read_index(index_data, sparse->indices_component_type);
+ float* writer_head = out + writer_index * floats_per_element;
+
+ if (!cgltf_element_read_float(reader_head, accessor->type, accessor->component_type, accessor->normalized, writer_head, floats_per_element))
+ {
+ return 0;
+ }
+ }
+ }
+
+ return element_count * floats_per_element;
+}
+
+static cgltf_uint cgltf_component_read_uint(const void* in, cgltf_component_type component_type)
+{
+ switch (component_type)
+ {
+ case cgltf_component_type_r_8:
+ return *((const int8_t*) in);
+
+ case cgltf_component_type_r_8u:
+ return *((const uint8_t*) in);
+
+ case cgltf_component_type_r_16:
+ return *((const int16_t*) in);
+
+ case cgltf_component_type_r_16u:
+ return *((const uint16_t*) in);
+
+ case cgltf_component_type_r_32u:
+ return *((const uint32_t*) in);
+
+ default:
+ return 0;
+ }
+}
+
+static cgltf_bool cgltf_element_read_uint(const uint8_t* element, cgltf_type type, cgltf_component_type component_type, cgltf_uint* out, cgltf_size element_size)
+{
+ cgltf_size num_components = cgltf_num_components(type);
+
+ if (element_size < num_components)
+ {
+ return 0;
+ }
+
+ // Reading integer matrices is not a valid use case
+ if (type == cgltf_type_mat2 || type == cgltf_type_mat3 || type == cgltf_type_mat4)
+ {
+ return 0;
+ }
+
+ cgltf_size component_size = cgltf_component_size(component_type);
+
+ for (cgltf_size i = 0; i < num_components; ++i)
+ {
+ out[i] = cgltf_component_read_uint(element + component_size * i, component_type);
+ }
+ return 1;
+}
+
+cgltf_bool cgltf_accessor_read_uint(const cgltf_accessor* accessor, cgltf_size index, cgltf_uint* out, cgltf_size element_size)
+{
+ if (accessor->is_sparse)
+ {
+ return 0;
+ }
+ if (accessor->buffer_view == NULL)
+ {
+ memset(out, 0, element_size * sizeof( cgltf_uint ));
+ return 1;
+ }
+ const uint8_t* element = cgltf_buffer_view_data(accessor->buffer_view);
+ if (element == NULL)
+ {
+ return 0;
+ }
+ element += accessor->offset + accessor->stride * index;
+ return cgltf_element_read_uint(element, accessor->type, accessor->component_type, out, element_size);
+}
+
+cgltf_size cgltf_accessor_read_index(const cgltf_accessor* accessor, cgltf_size index)
+{
+ if (accessor->is_sparse)
+ {
+ return 0; // This is an error case, but we can't communicate the error with existing interface.
+ }
+ if (accessor->buffer_view == NULL)
+ {
+ return 0;
+ }
+ const uint8_t* element = cgltf_buffer_view_data(accessor->buffer_view);
+ if (element == NULL)
+ {
+ return 0; // This is an error case, but we can't communicate the error with existing interface.
+ }
+ element += accessor->offset + accessor->stride * index;
+ return cgltf_component_read_index(element, accessor->component_type);
+}
+
+cgltf_size cgltf_mesh_index(const cgltf_data* data, const cgltf_mesh* object)
+{
+ assert(object && (cgltf_size)(object - data->meshes) < data->meshes_count);
+ return (cgltf_size)(object - data->meshes);
+}
+
+cgltf_size cgltf_material_index(const cgltf_data* data, const cgltf_material* object)
+{
+ assert(object && (cgltf_size)(object - data->materials) < data->materials_count);
+ return (cgltf_size)(object - data->materials);
+}
+
+cgltf_size cgltf_accessor_index(const cgltf_data* data, const cgltf_accessor* object)
+{
+ assert(object && (cgltf_size)(object - data->accessors) < data->accessors_count);
+ return (cgltf_size)(object - data->accessors);
+}
+
+cgltf_size cgltf_buffer_view_index(const cgltf_data* data, const cgltf_buffer_view* object)
+{
+ assert(object && (cgltf_size)(object - data->buffer_views) < data->buffer_views_count);
+ return (cgltf_size)(object - data->buffer_views);
+}
+
+cgltf_size cgltf_buffer_index(const cgltf_data* data, const cgltf_buffer* object)
+{
+ assert(object && (cgltf_size)(object - data->buffers) < data->buffers_count);
+ return (cgltf_size)(object - data->buffers);
+}
+
+cgltf_size cgltf_image_index(const cgltf_data* data, const cgltf_image* object)
+{
+ assert(object && (cgltf_size)(object - data->images) < data->images_count);
+ return (cgltf_size)(object - data->images);
+}
+
+cgltf_size cgltf_texture_index(const cgltf_data* data, const cgltf_texture* object)
+{
+ assert(object && (cgltf_size)(object - data->textures) < data->textures_count);
+ return (cgltf_size)(object - data->textures);
+}
+
+cgltf_size cgltf_sampler_index(const cgltf_data* data, const cgltf_sampler* object)
+{
+ assert(object && (cgltf_size)(object - data->samplers) < data->samplers_count);
+ return (cgltf_size)(object - data->samplers);
+}
+
+cgltf_size cgltf_skin_index(const cgltf_data* data, const cgltf_skin* object)
+{
+ assert(object && (cgltf_size)(object - data->skins) < data->skins_count);
+ return (cgltf_size)(object - data->skins);
+}
+
+cgltf_size cgltf_camera_index(const cgltf_data* data, const cgltf_camera* object)
+{
+ assert(object && (cgltf_size)(object - data->cameras) < data->cameras_count);
+ return (cgltf_size)(object - data->cameras);
+}
+
+cgltf_size cgltf_light_index(const cgltf_data* data, const cgltf_light* object)
+{
+ assert(object && (cgltf_size)(object - data->lights) < data->lights_count);
+ return (cgltf_size)(object - data->lights);
+}
+
+cgltf_size cgltf_node_index(const cgltf_data* data, const cgltf_node* object)
+{
+ assert(object && (cgltf_size)(object - data->nodes) < data->nodes_count);
+ return (cgltf_size)(object - data->nodes);
+}
+
+cgltf_size cgltf_scene_index(const cgltf_data* data, const cgltf_scene* object)
+{
+ assert(object && (cgltf_size)(object - data->scenes) < data->scenes_count);
+ return (cgltf_size)(object - data->scenes);
+}
+
+cgltf_size cgltf_animation_index(const cgltf_data* data, const cgltf_animation* object)
+{
+ assert(object && (cgltf_size)(object - data->animations) < data->animations_count);
+ return (cgltf_size)(object - data->animations);
+}
+
+cgltf_size cgltf_animation_sampler_index(const cgltf_animation* animation, const cgltf_animation_sampler* object)
+{
+ assert(object && (cgltf_size)(object - animation->samplers) < animation->samplers_count);
+ return (cgltf_size)(object - animation->samplers);
+}
+
+cgltf_size cgltf_animation_channel_index(const cgltf_animation* animation, const cgltf_animation_channel* object)
+{
+ assert(object && (cgltf_size)(object - animation->channels) < animation->channels_count);
+ return (cgltf_size)(object - animation->channels);
+}
+
+cgltf_size cgltf_accessor_unpack_indices(const cgltf_accessor* accessor, void* out, cgltf_size out_component_size, cgltf_size index_count)
+{
+ if (out == NULL)
+ {
+ return accessor->count;
+ }
+
+ cgltf_size numbers_per_element = cgltf_num_components(accessor->type);
+ cgltf_size available_numbers = accessor->count * numbers_per_element;
+
+ index_count = available_numbers < index_count ? available_numbers : index_count;
+ cgltf_size index_component_size = cgltf_component_size(accessor->component_type);
+
+ if (accessor->is_sparse)
+ {
+ return 0;
+ }
+ if (accessor->buffer_view == NULL)
+ {
+ return 0;
+ }
+ if (index_component_size > out_component_size)
+ {
+ return 0;
+ }
+ const uint8_t* element = cgltf_buffer_view_data(accessor->buffer_view);
+ if (element == NULL)
+ {
+ return 0;
+ }
+ element += accessor->offset;
+
+ if (index_component_size == out_component_size && accessor->stride == out_component_size * numbers_per_element)
+ {
+ memcpy(out, element, index_count * index_component_size);
+ return index_count;
+ }
+
+ // Data couldn't be copied with memcpy due to stride being larger than the component size.
+ // OR
+ // The component size of the output array is larger than the component size of the index data, so index data will be padded.
+ switch (out_component_size)
+ {
+ case 1:
+ for (cgltf_size index = 0; index < index_count; index++, element += accessor->stride)
+ {
+ ((uint8_t*)out)[index] = (uint8_t)cgltf_component_read_index(element, accessor->component_type);
+ }
+ break;
+ case 2:
+ for (cgltf_size index = 0; index < index_count; index++, element += accessor->stride)
+ {
+ ((uint16_t*)out)[index] = (uint16_t)cgltf_component_read_index(element, accessor->component_type);
+ }
+ break;
+ case 4:
+ for (cgltf_size index = 0; index < index_count; index++, element += accessor->stride)
+ {
+ ((uint32_t*)out)[index] = (uint32_t)cgltf_component_read_index(element, accessor->component_type);
+ }
+ break;
+ default:
+ return 0;
+ }
+
+ return index_count;
+}
+
+#define CGLTF_ERROR_JSON -1
+#define CGLTF_ERROR_NOMEM -2
+#define CGLTF_ERROR_LEGACY -3
+
+#define CGLTF_CHECK_TOKTYPE(tok_, type_) if ((tok_).type != (type_)) { return CGLTF_ERROR_JSON; }
+#define CGLTF_CHECK_TOKTYPE_RET(tok_, type_, ret_) if ((tok_).type != (type_)) { return ret_; }
+#define CGLTF_CHECK_KEY(tok_) if ((tok_).type != JSMN_STRING || (tok_).size == 0) { return CGLTF_ERROR_JSON; } /* checking size for 0 verifies that a value follows the key */
+
+#define CGLTF_PTRINDEX(type, idx) (type*)((cgltf_size)idx + 1)
+#define CGLTF_PTRFIXUP(var, data, size) if (var) { if ((cgltf_size)var > size) { return CGLTF_ERROR_JSON; } var = &data[(cgltf_size)var-1]; }
+#define CGLTF_PTRFIXUP_REQ(var, data, size) if (!var || (cgltf_size)var > size) { return CGLTF_ERROR_JSON; } var = &data[(cgltf_size)var-1];
+
+static int cgltf_json_strcmp(jsmntok_t const* tok, const uint8_t* json_chunk, const char* str)
+{
+ CGLTF_CHECK_TOKTYPE(*tok, JSMN_STRING);
+ size_t const str_len = strlen(str);
+ size_t const name_length = (size_t)(tok->end - tok->start);
+ return (str_len == name_length) ? strncmp((const char*)json_chunk + tok->start, str, str_len) : 128;
+}
+
+static int cgltf_json_to_int(jsmntok_t const* tok, const uint8_t* json_chunk)
+{
+ CGLTF_CHECK_TOKTYPE(*tok, JSMN_PRIMITIVE);
+ char tmp[128];
+ int size = (size_t)(tok->end - tok->start) < sizeof(tmp) ? (int)(tok->end - tok->start) : (int)(sizeof(tmp) - 1);
+ strncpy(tmp, (const char*)json_chunk + tok->start, size);
+ tmp[size] = 0;
+ return CGLTF_ATOI(tmp);
+}
+
+static cgltf_size cgltf_json_to_size(jsmntok_t const* tok, const uint8_t* json_chunk)
+{
+ CGLTF_CHECK_TOKTYPE_RET(*tok, JSMN_PRIMITIVE, 0);
+ char tmp[128];
+ int size = (size_t)(tok->end - tok->start) < sizeof(tmp) ? (int)(tok->end - tok->start) : (int)(sizeof(tmp) - 1);
+ strncpy(tmp, (const char*)json_chunk + tok->start, size);
+ tmp[size] = 0;
+ long long res = CGLTF_ATOLL(tmp);
+ return res < 0 ? 0 : (cgltf_size)res;
+}
+
+static cgltf_float cgltf_json_to_float(jsmntok_t const* tok, const uint8_t* json_chunk)
+{
+ CGLTF_CHECK_TOKTYPE(*tok, JSMN_PRIMITIVE);
+ char tmp[128];
+ int size = (size_t)(tok->end - tok->start) < sizeof(tmp) ? (int)(tok->end - tok->start) : (int)(sizeof(tmp) - 1);
+ strncpy(tmp, (const char*)json_chunk + tok->start, size);
+ tmp[size] = 0;
+ return (cgltf_float)CGLTF_ATOF(tmp);
+}
+
+static cgltf_bool cgltf_json_to_bool(jsmntok_t const* tok, const uint8_t* json_chunk)
+{
+ int size = (int)(tok->end - tok->start);
+ return size == 4 && memcmp(json_chunk + tok->start, "true", 4) == 0;
+}
+
+static int cgltf_skip_json(jsmntok_t const* tokens, int i)
+{
+ int end = i + 1;
+
+ while (i < end)
+ {
+ switch (tokens[i].type)
+ {
+ case JSMN_OBJECT:
+ end += tokens[i].size * 2;
+ break;
+
+ case JSMN_ARRAY:
+ end += tokens[i].size;
+ break;
+
+ case JSMN_PRIMITIVE:
+ case JSMN_STRING:
+ break;
+
+ default:
+ return -1;
+ }
+
+ i++;
+ }
+
+ return i;
+}
+
+static void cgltf_fill_float_array(float* out_array, int size, float value)
+{
+ for (int j = 0; j < size; ++j)
+ {
+ out_array[j] = value;
+ }
+}
+
+static int cgltf_parse_json_float_array(jsmntok_t const* tokens, int i, const uint8_t* json_chunk, float* out_array, int size)
+{
+ CGLTF_CHECK_TOKTYPE(tokens[i], JSMN_ARRAY);
+ if (tokens[i].size != size)
+ {
+ return CGLTF_ERROR_JSON;
+ }
+ ++i;
+ for (int j = 0; j < size; ++j)
+ {
+ CGLTF_CHECK_TOKTYPE(tokens[i], JSMN_PRIMITIVE);
+ out_array[j] = cgltf_json_to_float(tokens + i, json_chunk);
+ ++i;
+ }
+ return i;
+}
+
+static int cgltf_parse_json_string(cgltf_options* options, jsmntok_t const* tokens, int i, const uint8_t* json_chunk, char** out_string)
+{
+ CGLTF_CHECK_TOKTYPE(tokens[i], JSMN_STRING);
+ if (*out_string)
+ {
+ return CGLTF_ERROR_JSON;
+ }
+ int size = (int)(tokens[i].end - tokens[i].start);
+ char* result = (char*)options->memory.alloc_func(options->memory.user_data, size + 1);
+ if (!result)
+ {
+ return CGLTF_ERROR_NOMEM;
+ }
+ strncpy(result, (const char*)json_chunk + tokens[i].start, size);
+ result[size] = 0;
+ *out_string = result;
+ return i + 1;
+}
+
+static int cgltf_parse_json_array(cgltf_options* options, jsmntok_t const* tokens, int i, const uint8_t* json_chunk, size_t element_size, void** out_array, cgltf_size* out_size)
+{
+ (void)json_chunk;
+ if (tokens[i].type != JSMN_ARRAY)
+ {
+ return tokens[i].type == JSMN_OBJECT ? CGLTF_ERROR_LEGACY : CGLTF_ERROR_JSON;
+ }
+ if (*out_array)
+ {
+ return CGLTF_ERROR_JSON;
+ }
+ int size = tokens[i].size;
+ void* result = cgltf_calloc(options, element_size, size);
+ if (!result)
+ {
+ return CGLTF_ERROR_NOMEM;
+ }
+ *out_array = result;
+ *out_size = size;
+ return i + 1;
+}
+
+static int cgltf_parse_json_string_array(cgltf_options* options, jsmntok_t const* tokens, int i, const uint8_t* json_chunk, char*** out_array, cgltf_size* out_size)
+{
+ CGLTF_CHECK_TOKTYPE(tokens[i], JSMN_ARRAY);
+ i = cgltf_parse_json_array(options, tokens, i, json_chunk, sizeof(char*), (void**)out_array, out_size);
+ if (i < 0)
+ {
+ return i;
+ }
+
+ for (cgltf_size j = 0; j < *out_size; ++j)
+ {
+ i = cgltf_parse_json_string(options, tokens, i, json_chunk, j + (*out_array));
+ if (i < 0)
+ {
+ return i;
+ }
+ }
+ return i;
+}
+
+static void cgltf_parse_attribute_type(const char* name, cgltf_attribute_type* out_type, int* out_index)
+{
+ if (*name == '_')
+ {
+ *out_type = cgltf_attribute_type_custom;
+ return;
+ }
+
+ const char* us = strchr(name, '_');
+ size_t len = us ? (size_t)(us - name) : strlen(name);
+
+ if (len == 8 && strncmp(name, "POSITION", 8) == 0)
+ {
+ *out_type = cgltf_attribute_type_position;
+ }
+ else if (len == 6 && strncmp(name, "NORMAL", 6) == 0)
+ {
+ *out_type = cgltf_attribute_type_normal;
+ }
+ else if (len == 7 && strncmp(name, "TANGENT", 7) == 0)
+ {
+ *out_type = cgltf_attribute_type_tangent;
+ }
+ else if (len == 8 && strncmp(name, "TEXCOORD", 8) == 0)
+ {
+ *out_type = cgltf_attribute_type_texcoord;
+ }
+ else if (len == 5 && strncmp(name, "COLOR", 5) == 0)
+ {
+ *out_type = cgltf_attribute_type_color;
+ }
+ else if (len == 6 && strncmp(name, "JOINTS", 6) == 0)
+ {
+ *out_type = cgltf_attribute_type_joints;
+ }
+ else if (len == 7 && strncmp(name, "WEIGHTS", 7) == 0)
+ {
+ *out_type = cgltf_attribute_type_weights;
+ }
+ else
+ {
+ *out_type = cgltf_attribute_type_invalid;
+ }
+
+ if (us && *out_type != cgltf_attribute_type_invalid)
+ {
+ *out_index = CGLTF_ATOI(us + 1);
+ if (*out_index < 0)
+ {
+ *out_type = cgltf_attribute_type_invalid;
+ *out_index = 0;
+ }
+ }
+}
+
+static int cgltf_parse_json_attribute_list(cgltf_options* options, jsmntok_t const* tokens, int i, const uint8_t* json_chunk, cgltf_attribute** out_attributes, cgltf_size* out_attributes_count)
+{
+ CGLTF_CHECK_TOKTYPE(tokens[i], JSMN_OBJECT);
+
+ if (*out_attributes)
+ {
+ return CGLTF_ERROR_JSON;
+ }
+
+ *out_attributes_count = tokens[i].size;
+ *out_attributes = (cgltf_attribute*)cgltf_calloc(options, sizeof(cgltf_attribute), *out_attributes_count);
+ ++i;
+
+ if (!*out_attributes)
+ {
+ return CGLTF_ERROR_NOMEM;
+ }
+
+ for (cgltf_size j = 0; j < *out_attributes_count; ++j)
+ {
+ CGLTF_CHECK_KEY(tokens[i]);
+
+ i = cgltf_parse_json_string(options, tokens, i, json_chunk, &(*out_attributes)[j].name);
+ if (i < 0)
+ {
+ return CGLTF_ERROR_JSON;
+ }
+
+ cgltf_parse_attribute_type((*out_attributes)[j].name, &(*out_attributes)[j].type, &(*out_attributes)[j].index);
+
+ (*out_attributes)[j].data = CGLTF_PTRINDEX(cgltf_accessor, cgltf_json_to_int(tokens + i, json_chunk));
+ ++i;
+ }
+
+ return i;
+}
+
+static int cgltf_parse_json_extras(cgltf_options* options, jsmntok_t const* tokens, int i, const uint8_t* json_chunk, cgltf_extras* out_extras)
+{
+ if (out_extras->data)
+ {
+ return CGLTF_ERROR_JSON;
+ }
+
+ /* fill deprecated fields for now, this will be removed in the future */
+ out_extras->start_offset = tokens[i].start;
+ out_extras->end_offset = tokens[i].end;
+
+ size_t start = tokens[i].start;
+ size_t size = tokens[i].end - start;
+ out_extras->data = (char*)options->memory.alloc_func(options->memory.user_data, size + 1);
+ if (!out_extras->data)
+ {
+ return CGLTF_ERROR_NOMEM;
+ }
+ strncpy(out_extras->data, (const char*)json_chunk + start, size);
+ out_extras->data[size] = '\0';
+
+ i = cgltf_skip_json(tokens, i);
+ return i;
+}
+
+static int cgltf_parse_json_unprocessed_extension(cgltf_options* options, jsmntok_t const* tokens, int i, const uint8_t* json_chunk, cgltf_extension* out_extension)
+{
+ CGLTF_CHECK_TOKTYPE(tokens[i], JSMN_STRING);
+ CGLTF_CHECK_TOKTYPE(tokens[i+1], JSMN_OBJECT);
+ if (out_extension->name)
+ {
+ return CGLTF_ERROR_JSON;
+ }
+
+ cgltf_size name_length = tokens[i].end - tokens[i].start;
+ out_extension->name = (char*)options->memory.alloc_func(options->memory.user_data, name_length + 1);
+ if (!out_extension->name)
+ {
+ return CGLTF_ERROR_NOMEM;
+ }
+ strncpy(out_extension->name, (const char*)json_chunk + tokens[i].start, name_length);
+ out_extension->name[name_length] = 0;
+ i++;
+
+ size_t start = tokens[i].start;
+ size_t size = tokens[i].end - start;
+ out_extension->data = (char*)options->memory.alloc_func(options->memory.user_data, size + 1);
+ if (!out_extension->data)
+ {
+ return CGLTF_ERROR_NOMEM;
+ }
+ strncpy(out_extension->data, (const char*)json_chunk + start, size);
+ out_extension->data[size] = '\0';
+
+ i = cgltf_skip_json(tokens, i);
+
+ return i;
+}
+
+static int cgltf_parse_json_unprocessed_extensions(cgltf_options* options, jsmntok_t const* tokens, int i, const uint8_t* json_chunk, cgltf_size* out_extensions_count, cgltf_extension** out_extensions)
+{
+ ++i;
+
+ CGLTF_CHECK_TOKTYPE(tokens[i], JSMN_OBJECT);
+ if(*out_extensions)
+ {
+ return CGLTF_ERROR_JSON;
+ }
+
+ int extensions_size = tokens[i].size;
+ *out_extensions_count = 0;
+ *out_extensions = (cgltf_extension*)cgltf_calloc(options, sizeof(cgltf_extension), extensions_size);
+
+ if (!*out_extensions)
+ {
+ return CGLTF_ERROR_NOMEM;
+ }
+
+ ++i;
+
+ for (int j = 0; j < extensions_size; ++j)
+ {
+ CGLTF_CHECK_KEY(tokens[i]);
+
+ cgltf_size extension_index = (*out_extensions_count)++;
+ cgltf_extension* extension = &((*out_extensions)[extension_index]);
+ i = cgltf_parse_json_unprocessed_extension(options, tokens, i, json_chunk, extension);
+
+ if (i < 0)
+ {
+ return i;
+ }
+ }
+ return i;
+}
+
+static int cgltf_parse_json_draco_mesh_compression(cgltf_options* options, jsmntok_t const* tokens, int i, const uint8_t* json_chunk, cgltf_draco_mesh_compression* out_draco_mesh_compression)
+{
+ CGLTF_CHECK_TOKTYPE(tokens[i], JSMN_OBJECT);
+
+ int size = tokens[i].size;
+ ++i;
+
+ for (int j = 0; j < size; ++j)
+ {
+ CGLTF_CHECK_KEY(tokens[i]);
+
+ if (cgltf_json_strcmp(tokens + i, json_chunk, "attributes") == 0)
+ {
+ i = cgltf_parse_json_attribute_list(options, tokens, i + 1, json_chunk, &out_draco_mesh_compression->attributes, &out_draco_mesh_compression->attributes_count);
+ }
+ else if (cgltf_json_strcmp(tokens + i, json_chunk, "bufferView") == 0)
+ {
+ ++i;
+ out_draco_mesh_compression->buffer_view = CGLTF_PTRINDEX(cgltf_buffer_view, cgltf_json_to_int(tokens + i, json_chunk));
+ ++i;
+ }
+ else
+ {
+ i = cgltf_skip_json(tokens, i+1);
+ }
+
+ if (i < 0)
+ {
+ return i;
+ }
+ }
+
+ return i;
+}
+
+static int cgltf_parse_json_mesh_gpu_instancing(cgltf_options* options, jsmntok_t const* tokens, int i, const uint8_t* json_chunk, cgltf_mesh_gpu_instancing* out_mesh_gpu_instancing)
+{
+ CGLTF_CHECK_TOKTYPE(tokens[i], JSMN_OBJECT);
+
+ int size = tokens[i].size;
+ ++i;
+
+ for (int j = 0; j < size; ++j)
+ {
+ CGLTF_CHECK_KEY(tokens[i]);
+
+ if (cgltf_json_strcmp(tokens + i, json_chunk, "attributes") == 0)
+ {
+ i = cgltf_parse_json_attribute_list(options, tokens, i + 1, json_chunk, &out_mesh_gpu_instancing->attributes, &out_mesh_gpu_instancing->attributes_count);
+ }
+ else
+ {
+ i = cgltf_skip_json(tokens, i+1);
+ }
+
+ if (i < 0)
+ {
+ return i;
+ }
+ }
+
+ return i;
+}
+
+static int cgltf_parse_json_material_mapping_data(cgltf_options* options, jsmntok_t const* tokens, int i, const uint8_t* json_chunk, cgltf_material_mapping* out_mappings, cgltf_size* offset)
+{
+ (void)options;
+ CGLTF_CHECK_TOKTYPE(tokens[i], JSMN_ARRAY);
+
+ int size = tokens[i].size;
+ ++i;
+
+ for (int j = 0; j < size; ++j)
+ {
+ CGLTF_CHECK_TOKTYPE(tokens[i], JSMN_OBJECT);
+
+ int obj_size = tokens[i].size;
+ ++i;
+
+ int material = -1;
+ int variants_tok = -1;
+ int extras_tok = -1;
+
+ for (int k = 0; k < obj_size; ++k)
+ {
+ CGLTF_CHECK_KEY(tokens[i]);
+
+ if (cgltf_json_strcmp(tokens + i, json_chunk, "material") == 0)
+ {
+ ++i;
+ material = cgltf_json_to_int(tokens + i, json_chunk);
+ ++i;
+ }
+ else if (cgltf_json_strcmp(tokens + i, json_chunk, "variants") == 0)
+ {
+ variants_tok = i+1;
+ CGLTF_CHECK_TOKTYPE(tokens[variants_tok], JSMN_ARRAY);
+
+ i = cgltf_skip_json(tokens, i+1);
+ }
+ else if (cgltf_json_strcmp(tokens + i, json_chunk, "extras") == 0)
+ {
+ extras_tok = i + 1;
+ i = cgltf_skip_json(tokens, extras_tok);
+ }
+ else
+ {
+ i = cgltf_skip_json(tokens, i+1);
+ }
+
+ if (i < 0)
+ {
+ return i;
+ }
+ }
+
+ if (material < 0 || variants_tok < 0)
+ {
+ return CGLTF_ERROR_JSON;
+ }
+
+ if (out_mappings)
+ {
+ for (int k = 0; k < tokens[variants_tok].size; ++k)
+ {
+ int variant = cgltf_json_to_int(&tokens[variants_tok + 1 + k], json_chunk);
+ if (variant < 0)
+ return variant;
+
+ out_mappings[*offset].material = CGLTF_PTRINDEX(cgltf_material, material);
+ out_mappings[*offset].variant = variant;
+
+ if (extras_tok >= 0)
+ {
+ int e = cgltf_parse_json_extras(options, tokens, extras_tok, json_chunk, &out_mappings[*offset].extras);
+ if (e < 0)
+ return e;
+ }
+
+ (*offset)++;
+ }
+ }
+ else
+ {
+ (*offset) += tokens[variants_tok].size;
+ }
+ }
+
+ return i;
+}
+
+static int cgltf_parse_json_material_mappings(cgltf_options* options, jsmntok_t const* tokens, int i, const uint8_t* json_chunk, cgltf_primitive* out_prim)
+{
+ CGLTF_CHECK_TOKTYPE(tokens[i], JSMN_OBJECT);
+
+ int size = tokens[i].size;
+ ++i;
+
+ for (int j = 0; j < size; ++j)
+ {
+ CGLTF_CHECK_KEY(tokens[i]);
+
+ if (cgltf_json_strcmp(tokens + i, json_chunk, "mappings") == 0)
+ {
+ if (out_prim->mappings)
+ {
+ return CGLTF_ERROR_JSON;
+ }
+
+ cgltf_size mappings_offset = 0;
+ int k = cgltf_parse_json_material_mapping_data(options, tokens, i + 1, json_chunk, NULL, &mappings_offset);
+ if (k < 0)
+ {
+ return k;
+ }
+
+ out_prim->mappings_count = mappings_offset;
+ out_prim->mappings = (cgltf_material_mapping*)cgltf_calloc(options, sizeof(cgltf_material_mapping), out_prim->mappings_count);
+
+ mappings_offset = 0;
+ i = cgltf_parse_json_material_mapping_data(options, tokens, i + 1, json_chunk, out_prim->mappings, &mappings_offset);
+ }
+ else
+ {
+ i = cgltf_skip_json(tokens, i+1);
+ }
+
+ if (i < 0)
+ {
+ return i;
+ }
+ }
+
+ return i;
+}
+
+static cgltf_primitive_type cgltf_json_to_primitive_type(jsmntok_t const* tok, const uint8_t* json_chunk)
+{
+ int type = cgltf_json_to_int(tok, json_chunk);
+
+ switch (type)
+ {
+ case 0:
+ return cgltf_primitive_type_points;
+ case 1:
+ return cgltf_primitive_type_lines;
+ case 2:
+ return cgltf_primitive_type_line_loop;
+ case 3:
+ return cgltf_primitive_type_line_strip;
+ case 4:
+ return cgltf_primitive_type_triangles;
+ case 5:
+ return cgltf_primitive_type_triangle_strip;
+ case 6:
+ return cgltf_primitive_type_triangle_fan;
+ default:
+ return cgltf_primitive_type_invalid;
+ }
+}
+
+static int cgltf_parse_json_primitive(cgltf_options* options, jsmntok_t const* tokens, int i, const uint8_t* json_chunk, cgltf_primitive* out_prim)
+{
+ CGLTF_CHECK_TOKTYPE(tokens[i], JSMN_OBJECT);
+
+ out_prim->type = cgltf_primitive_type_triangles;
+
+ int size = tokens[i].size;
+ ++i;
+
+ for (int j = 0; j < size; ++j)
+ {
+ CGLTF_CHECK_KEY(tokens[i]);
+
+ if (cgltf_json_strcmp(tokens+i, json_chunk, "mode") == 0)
+ {
+ ++i;
+ out_prim->type = cgltf_json_to_primitive_type(tokens+i, json_chunk);
+ ++i;
+ }
+ else if (cgltf_json_strcmp(tokens+i, json_chunk, "indices") == 0)
+ {
+ ++i;
+ out_prim->indices = CGLTF_PTRINDEX(cgltf_accessor, cgltf_json_to_int(tokens + i, json_chunk));
+ ++i;
+ }
+ else if (cgltf_json_strcmp(tokens+i, json_chunk, "material") == 0)
+ {
+ ++i;
+ out_prim->material = CGLTF_PTRINDEX(cgltf_material, cgltf_json_to_int(tokens + i, json_chunk));
+ ++i;
+ }
+ else if (cgltf_json_strcmp(tokens+i, json_chunk, "attributes") == 0)
+ {
+ i = cgltf_parse_json_attribute_list(options, tokens, i + 1, json_chunk, &out_prim->attributes, &out_prim->attributes_count);
+ }
+ else if (cgltf_json_strcmp(tokens+i, json_chunk, "targets") == 0)
+ {
+ i = cgltf_parse_json_array(options, tokens, i + 1, json_chunk, sizeof(cgltf_morph_target), (void**)&out_prim->targets, &out_prim->targets_count);
+ if (i < 0)
+ {
+ return i;
+ }
+
+ for (cgltf_size k = 0; k < out_prim->targets_count; ++k)
+ {
+ i = cgltf_parse_json_attribute_list(options, tokens, i, json_chunk, &out_prim->targets[k].attributes, &out_prim->targets[k].attributes_count);
+ if (i < 0)
+ {
+ return i;
+ }
+ }
+ }
+ else if (cgltf_json_strcmp(tokens + i, json_chunk, "extras") == 0)
+ {
+ i = cgltf_parse_json_extras(options, tokens, i + 1, json_chunk, &out_prim->extras);
+ }
+ else if (cgltf_json_strcmp(tokens + i, json_chunk, "extensions") == 0)
+ {
+ ++i;
+
+ CGLTF_CHECK_TOKTYPE(tokens[i], JSMN_OBJECT);
+ if(out_prim->extensions)
+ {
+ return CGLTF_ERROR_JSON;
+ }
+
+ int extensions_size = tokens[i].size;
+ out_prim->extensions_count = 0;
+ out_prim->extensions = (cgltf_extension*)cgltf_calloc(options, sizeof(cgltf_extension), extensions_size);
+
+ if (!out_prim->extensions)
+ {
+ return CGLTF_ERROR_NOMEM;
+ }
+
+ ++i;
+ for (int k = 0; k < extensions_size; ++k)
+ {
+ CGLTF_CHECK_KEY(tokens[i]);
+
+ if (cgltf_json_strcmp(tokens+i, json_chunk, "KHR_draco_mesh_compression") == 0)
+ {
+ out_prim->has_draco_mesh_compression = 1;
+ i = cgltf_parse_json_draco_mesh_compression(options, tokens, i + 1, json_chunk, &out_prim->draco_mesh_compression);
+ }
+ else if (cgltf_json_strcmp(tokens+i, json_chunk, "KHR_materials_variants") == 0)
+ {
+ i = cgltf_parse_json_material_mappings(options, tokens, i + 1, json_chunk, out_prim);
+ }
+ else
+ {
+ i = cgltf_parse_json_unprocessed_extension(options, tokens, i, json_chunk, &(out_prim->extensions[out_prim->extensions_count++]));
+ }
+
+ if (i < 0)
+ {
+ return i;
+ }
+ }
+ }
+ else
+ {
+ i = cgltf_skip_json(tokens, i+1);
+ }
+
+ if (i < 0)
+ {
+ return i;
+ }
+ }
+
+ return i;
+}
+
+static int cgltf_parse_json_mesh(cgltf_options* options, jsmntok_t const* tokens, int i, const uint8_t* json_chunk, cgltf_mesh* out_mesh)
+{
+ CGLTF_CHECK_TOKTYPE(tokens[i], JSMN_OBJECT);
+
+ int size = tokens[i].size;
+ ++i;
+
+ for (int j = 0; j < size; ++j)
+ {
+ CGLTF_CHECK_KEY(tokens[i]);
+
+ if (cgltf_json_strcmp(tokens+i, json_chunk, "name") == 0)
+ {
+ i = cgltf_parse_json_string(options, tokens, i + 1, json_chunk, &out_mesh->name);
+ }
+ else if (cgltf_json_strcmp(tokens+i, json_chunk, "primitives") == 0)
+ {
+ i = cgltf_parse_json_array(options, tokens, i + 1, json_chunk, sizeof(cgltf_primitive), (void**)&out_mesh->primitives, &out_mesh->primitives_count);
+ if (i < 0)
+ {
+ return i;
+ }
+
+ for (cgltf_size prim_index = 0; prim_index < out_mesh->primitives_count; ++prim_index)
+ {
+ i = cgltf_parse_json_primitive(options, tokens, i, json_chunk, &out_mesh->primitives[prim_index]);
+ if (i < 0)
+ {
+ return i;
+ }
+ }
+ }
+ else if (cgltf_json_strcmp(tokens + i, json_chunk, "weights") == 0)
+ {
+ i = cgltf_parse_json_array(options, tokens, i + 1, json_chunk, sizeof(cgltf_float), (void**)&out_mesh->weights, &out_mesh->weights_count);
+ if (i < 0)
+ {
+ return i;
+ }
+
+ i = cgltf_parse_json_float_array(tokens, i - 1, json_chunk, out_mesh->weights, (int)out_mesh->weights_count);
+ }
+ else if (cgltf_json_strcmp(tokens + i, json_chunk, "extras") == 0)
+ {
+ ++i;
+
+ out_mesh->extras.start_offset = tokens[i].start;
+ out_mesh->extras.end_offset = tokens[i].end;
+
+ if (tokens[i].type == JSMN_OBJECT)
+ {
+ int extras_size = tokens[i].size;
+ ++i;
+
+ for (int k = 0; k < extras_size; ++k)
+ {
+ CGLTF_CHECK_KEY(tokens[i]);
+
+ if (cgltf_json_strcmp(tokens+i, json_chunk, "targetNames") == 0 && tokens[i+1].type == JSMN_ARRAY)
+ {
+ i = cgltf_parse_json_string_array(options, tokens, i + 1, json_chunk, &out_mesh->target_names, &out_mesh->target_names_count);
+ }
+ else
+ {
+ i = cgltf_skip_json(tokens, i+1);
+ }
+
+ if (i < 0)
+ {
+ return i;
+ }
+ }
+ }
+ else
+ {
+ i = cgltf_skip_json(tokens, i);
+ }
+ }
+ else if (cgltf_json_strcmp(tokens + i, json_chunk, "extensions") == 0)
+ {
+ i = cgltf_parse_json_unprocessed_extensions(options, tokens, i, json_chunk, &out_mesh->extensions_count, &out_mesh->extensions);
+ }
+ else
+ {
+ i = cgltf_skip_json(tokens, i+1);
+ }
+
+ if (i < 0)
+ {
+ return i;
+ }
+ }
+
+ return i;
+}
+
+static int cgltf_parse_json_meshes(cgltf_options* options, jsmntok_t const* tokens, int i, const uint8_t* json_chunk, cgltf_data* out_data)
+{
+ i = cgltf_parse_json_array(options, tokens, i, json_chunk, sizeof(cgltf_mesh), (void**)&out_data->meshes, &out_data->meshes_count);
+ if (i < 0)
+ {
+ return i;
+ }
+
+ for (cgltf_size j = 0; j < out_data->meshes_count; ++j)
+ {
+ i = cgltf_parse_json_mesh(options, tokens, i, json_chunk, &out_data->meshes[j]);
+ if (i < 0)
+ {
+ return i;
+ }
+ }
+ return i;
+}
+
+static cgltf_component_type cgltf_json_to_component_type(jsmntok_t const* tok, const uint8_t* json_chunk)
+{
+ int type = cgltf_json_to_int(tok, json_chunk);
+
+ switch (type)
+ {
+ case 5120:
+ return cgltf_component_type_r_8;
+ case 5121:
+ return cgltf_component_type_r_8u;
+ case 5122:
+ return cgltf_component_type_r_16;
+ case 5123:
+ return cgltf_component_type_r_16u;
+ case 5125:
+ return cgltf_component_type_r_32u;
+ case 5126:
+ return cgltf_component_type_r_32f;
+ default:
+ return cgltf_component_type_invalid;
+ }
+}
+
+static int cgltf_parse_json_accessor_sparse(jsmntok_t const* tokens, int i, const uint8_t* json_chunk, cgltf_accessor_sparse* out_sparse)
+{
+ CGLTF_CHECK_TOKTYPE(tokens[i], JSMN_OBJECT);
+
+ int size = tokens[i].size;
+ ++i;
+
+ for (int j = 0; j < size; ++j)
+ {
+ CGLTF_CHECK_KEY(tokens[i]);
+
+ if (cgltf_json_strcmp(tokens+i, json_chunk, "count") == 0)
+ {
+ ++i;
+ out_sparse->count = cgltf_json_to_size(tokens + i, json_chunk);
+ ++i;
+ }
+ else if (cgltf_json_strcmp(tokens+i, json_chunk, "indices") == 0)
+ {
+ ++i;
+ CGLTF_CHECK_TOKTYPE(tokens[i], JSMN_OBJECT);
+
+ int indices_size = tokens[i].size;
+ ++i;
+
+ for (int k = 0; k < indices_size; ++k)
+ {
+ CGLTF_CHECK_KEY(tokens[i]);
+
+ if (cgltf_json_strcmp(tokens+i, json_chunk, "bufferView") == 0)
+ {
+ ++i;
+ out_sparse->indices_buffer_view = CGLTF_PTRINDEX(cgltf_buffer_view, cgltf_json_to_int(tokens + i, json_chunk));
+ ++i;
+ }
+ else if (cgltf_json_strcmp(tokens+i, json_chunk, "byteOffset") == 0)
+ {
+ ++i;
+ out_sparse->indices_byte_offset = cgltf_json_to_size(tokens + i, json_chunk);
+ ++i;
+ }
+ else if (cgltf_json_strcmp(tokens+i, json_chunk, "componentType") == 0)
+ {
+ ++i;
+ out_sparse->indices_component_type = cgltf_json_to_component_type(tokens + i, json_chunk);
+ ++i;
+ }
+ else
+ {
+ i = cgltf_skip_json(tokens, i+1);
+ }
+
+ if (i < 0)
+ {
+ return i;
+ }
+ }
+ }
+ else if (cgltf_json_strcmp(tokens+i, json_chunk, "values") == 0)
+ {
+ ++i;
+ CGLTF_CHECK_TOKTYPE(tokens[i], JSMN_OBJECT);
+
+ int values_size = tokens[i].size;
+ ++i;
+
+ for (int k = 0; k < values_size; ++k)
+ {
+ CGLTF_CHECK_KEY(tokens[i]);
+
+ if (cgltf_json_strcmp(tokens+i, json_chunk, "bufferView") == 0)
+ {
+ ++i;
+ out_sparse->values_buffer_view = CGLTF_PTRINDEX(cgltf_buffer_view, cgltf_json_to_int(tokens + i, json_chunk));
+ ++i;
+ }
+ else if (cgltf_json_strcmp(tokens+i, json_chunk, "byteOffset") == 0)
+ {
+ ++i;
+ out_sparse->values_byte_offset = cgltf_json_to_size(tokens + i, json_chunk);
+ ++i;
+ }
+ else
+ {
+ i = cgltf_skip_json(tokens, i+1);
+ }
+
+ if (i < 0)
+ {
+ return i;
+ }
+ }
+ }
+ else
+ {
+ i = cgltf_skip_json(tokens, i+1);
+ }
+
+ if (i < 0)
+ {
+ return i;
+ }
+ }
+
+ return i;
+}
+
+static int cgltf_parse_json_accessor(cgltf_options* options, jsmntok_t const* tokens, int i, const uint8_t* json_chunk, cgltf_accessor* out_accessor)
+{
+ CGLTF_CHECK_TOKTYPE(tokens[i], JSMN_OBJECT);
+
+ int size = tokens[i].size;
+ ++i;
+
+ for (int j = 0; j < size; ++j)
+ {
+ CGLTF_CHECK_KEY(tokens[i]);
+
+ if (cgltf_json_strcmp(tokens + i, json_chunk, "name") == 0)
+ {
+ i = cgltf_parse_json_string(options, tokens, i + 1, json_chunk, &out_accessor->name);
+ }
+ else if (cgltf_json_strcmp(tokens+i, json_chunk, "bufferView") == 0)
+ {
+ ++i;
+ out_accessor->buffer_view = CGLTF_PTRINDEX(cgltf_buffer_view, cgltf_json_to_int(tokens + i, json_chunk));
+ ++i;
+ }
+ else if (cgltf_json_strcmp(tokens+i, json_chunk, "byteOffset") == 0)
+ {
+ ++i;
+ out_accessor->offset =
+ cgltf_json_to_size(tokens+i, json_chunk);
+ ++i;
+ }
+ else if (cgltf_json_strcmp(tokens+i, json_chunk, "componentType") == 0)
+ {
+ ++i;
+ out_accessor->component_type = cgltf_json_to_component_type(tokens + i, json_chunk);
+ ++i;
+ }
+ else if (cgltf_json_strcmp(tokens+i, json_chunk, "normalized") == 0)
+ {
+ ++i;
+ out_accessor->normalized = cgltf_json_to_bool(tokens+i, json_chunk);
+ ++i;
+ }
+ else if (cgltf_json_strcmp(tokens+i, json_chunk, "count") == 0)
+ {
+ ++i;
+ out_accessor->count = cgltf_json_to_size(tokens+i, json_chunk);
+ ++i;
+ }
+ else if (cgltf_json_strcmp(tokens+i, json_chunk, "type") == 0)
+ {
+ ++i;
+ if (cgltf_json_strcmp(tokens+i, json_chunk, "SCALAR") == 0)
+ {
+ out_accessor->type = cgltf_type_scalar;
+ }
+ else if (cgltf_json_strcmp(tokens+i, json_chunk, "VEC2") == 0)
+ {
+ out_accessor->type = cgltf_type_vec2;
+ }
+ else if (cgltf_json_strcmp(tokens+i, json_chunk, "VEC3") == 0)
+ {
+ out_accessor->type = cgltf_type_vec3;
+ }
+ else if (cgltf_json_strcmp(tokens+i, json_chunk, "VEC4") == 0)
+ {
+ out_accessor->type = cgltf_type_vec4;
+ }
+ else if (cgltf_json_strcmp(tokens+i, json_chunk, "MAT2") == 0)
+ {
+ out_accessor->type = cgltf_type_mat2;
+ }
+ else if (cgltf_json_strcmp(tokens+i, json_chunk, "MAT3") == 0)
+ {
+ out_accessor->type = cgltf_type_mat3;
+ }
+ else if (cgltf_json_strcmp(tokens+i, json_chunk, "MAT4") == 0)
+ {
+ out_accessor->type = cgltf_type_mat4;
+ }
+ ++i;
+ }
+ else if (cgltf_json_strcmp(tokens + i, json_chunk, "min") == 0)
+ {
+ ++i;
+ out_accessor->has_min = 1;
+ // note: we can't parse the precise number of elements since type may not have been computed yet
+ int min_size = tokens[i].size > 16 ? 16 : tokens[i].size;
+ i = cgltf_parse_json_float_array(tokens, i, json_chunk, out_accessor->min, min_size);
+ }
+ else if (cgltf_json_strcmp(tokens + i, json_chunk, "max") == 0)
+ {
+ ++i;
+ out_accessor->has_max = 1;
+ // note: we can't parse the precise number of elements since type may not have been computed yet
+ int max_size = tokens[i].size > 16 ? 16 : tokens[i].size;
+ i = cgltf_parse_json_float_array(tokens, i, json_chunk, out_accessor->max, max_size);
+ }
+ else if (cgltf_json_strcmp(tokens + i, json_chunk, "sparse") == 0)
+ {
+ out_accessor->is_sparse = 1;
+ i = cgltf_parse_json_accessor_sparse(tokens, i + 1, json_chunk, &out_accessor->sparse);
+ }
+ else if (cgltf_json_strcmp(tokens + i, json_chunk, "extras") == 0)
+ {
+ i = cgltf_parse_json_extras(options, tokens, i + 1, json_chunk, &out_accessor->extras);
+ }
+ else if (cgltf_json_strcmp(tokens + i, json_chunk, "extensions") == 0)
+ {
+ i = cgltf_parse_json_unprocessed_extensions(options, tokens, i, json_chunk, &out_accessor->extensions_count, &out_accessor->extensions);
+ }
+ else
+ {
+ i = cgltf_skip_json(tokens, i+1);
+ }
+
+ if (i < 0)
+ {
+ return i;
+ }
+ }
+
+ return i;
+}
+
+static int cgltf_parse_json_texture_transform(jsmntok_t const* tokens, int i, const uint8_t* json_chunk, cgltf_texture_transform* out_texture_transform)
+{
+ CGLTF_CHECK_TOKTYPE(tokens[i], JSMN_OBJECT);
+
+ int size = tokens[i].size;
+ ++i;
+
+ for (int j = 0; j < size; ++j)
+ {
+ CGLTF_CHECK_KEY(tokens[i]);
+
+ if (cgltf_json_strcmp(tokens + i, json_chunk, "offset") == 0)
+ {
+ i = cgltf_parse_json_float_array(tokens, i + 1, json_chunk, out_texture_transform->offset, 2);
+ }
+ else if (cgltf_json_strcmp(tokens + i, json_chunk, "rotation") == 0)
+ {
+ ++i;
+ out_texture_transform->rotation = cgltf_json_to_float(tokens + i, json_chunk);
+ ++i;
+ }
+ else if (cgltf_json_strcmp(tokens + i, json_chunk, "scale") == 0)
+ {
+ i = cgltf_parse_json_float_array(tokens, i + 1, json_chunk, out_texture_transform->scale, 2);
+ }
+ else if (cgltf_json_strcmp(tokens + i, json_chunk, "texCoord") == 0)
+ {
+ ++i;
+ out_texture_transform->has_texcoord = 1;
+ out_texture_transform->texcoord = cgltf_json_to_int(tokens + i, json_chunk);
+ ++i;
+ }
+ else
+ {
+ i = cgltf_skip_json(tokens, i + 1);
+ }
+
+ if (i < 0)
+ {
+ return i;
+ }
+ }
+
+ return i;
+}
+
+static int cgltf_parse_json_texture_view(cgltf_options* options, jsmntok_t const* tokens, int i, const uint8_t* json_chunk, cgltf_texture_view* out_texture_view)
+{
+ (void)options;
+
+ CGLTF_CHECK_TOKTYPE(tokens[i], JSMN_OBJECT);
+
+ out_texture_view->scale = 1.0f;
+ cgltf_fill_float_array(out_texture_view->transform.scale, 2, 1.0f);
+
+ int size = tokens[i].size;
+ ++i;
+
+ for (int j = 0; j < size; ++j)
+ {
+ CGLTF_CHECK_KEY(tokens[i]);
+
+ if (cgltf_json_strcmp(tokens + i, json_chunk, "index") == 0)
+ {
+ ++i;
+ out_texture_view->texture = CGLTF_PTRINDEX(cgltf_texture, cgltf_json_to_int(tokens + i, json_chunk));
+ ++i;
+ }
+ else if (cgltf_json_strcmp(tokens + i, json_chunk, "texCoord") == 0)
+ {
+ ++i;
+ out_texture_view->texcoord = cgltf_json_to_int(tokens + i, json_chunk);
+ ++i;
+ }
+ else if (cgltf_json_strcmp(tokens + i, json_chunk, "scale") == 0)
+ {
+ ++i;
+ out_texture_view->scale = cgltf_json_to_float(tokens + i, json_chunk);
+ ++i;
+ }
+ else if (cgltf_json_strcmp(tokens + i, json_chunk, "strength") == 0)
+ {
+ ++i;
+ out_texture_view->scale = cgltf_json_to_float(tokens + i, json_chunk);
+ ++i;
+ }
+ else if (cgltf_json_strcmp(tokens + i, json_chunk, "extensions") == 0)
+ {
+ ++i;
+
+ CGLTF_CHECK_TOKTYPE(tokens[i], JSMN_OBJECT);
+ int extensions_size = tokens[i].size;
+
+ ++i;
+
+ for (int k = 0; k < extensions_size; ++k)
+ {
+ CGLTF_CHECK_KEY(tokens[i]);
+
+ if (cgltf_json_strcmp(tokens+i, json_chunk, "KHR_texture_transform") == 0)
+ {
+ out_texture_view->has_transform = 1;
+ i = cgltf_parse_json_texture_transform(tokens, i + 1, json_chunk, &out_texture_view->transform);
+ }
+ else
+ {
+ i = cgltf_skip_json(tokens, i + 1);
+ }
+
+ if (i < 0)
+ {
+ return i;
+ }
+ }
+ }
+ else
+ {
+ i = cgltf_skip_json(tokens, i + 1);
+ }
+
+ if (i < 0)
+ {
+ return i;
+ }
+ }
+
+ return i;
+}
+
+static int cgltf_parse_json_pbr_metallic_roughness(cgltf_options* options, jsmntok_t const* tokens, int i, const uint8_t* json_chunk, cgltf_pbr_metallic_roughness* out_pbr)
+{
+ CGLTF_CHECK_TOKTYPE(tokens[i], JSMN_OBJECT);
+
+ int size = tokens[i].size;
+ ++i;
+
+ for (int j = 0; j < size; ++j)
+ {
+ CGLTF_CHECK_KEY(tokens[i]);
+
+ if (cgltf_json_strcmp(tokens+i, json_chunk, "metallicFactor") == 0)
+ {
+ ++i;
+ out_pbr->metallic_factor =
+ cgltf_json_to_float(tokens + i, json_chunk);
+ ++i;
+ }
+ else if (cgltf_json_strcmp(tokens+i, json_chunk, "roughnessFactor") == 0)
+ {
+ ++i;
+ out_pbr->roughness_factor =
+ cgltf_json_to_float(tokens+i, json_chunk);
+ ++i;
+ }
+ else if (cgltf_json_strcmp(tokens+i, json_chunk, "baseColorFactor") == 0)
+ {
+ i = cgltf_parse_json_float_array(tokens, i + 1, json_chunk, out_pbr->base_color_factor, 4);
+ }
+ else if (cgltf_json_strcmp(tokens+i, json_chunk, "baseColorTexture") == 0)
+ {
+ i = cgltf_parse_json_texture_view(options, tokens, i + 1, json_chunk, &out_pbr->base_color_texture);
+ }
+ else if (cgltf_json_strcmp(tokens + i, json_chunk, "metallicRoughnessTexture") == 0)
+ {
+ i = cgltf_parse_json_texture_view(options, tokens, i + 1, json_chunk, &out_pbr->metallic_roughness_texture);
+ }
+ else
+ {
+ i = cgltf_skip_json(tokens, i+1);
+ }
+
+ if (i < 0)
+ {
+ return i;
+ }
+ }
+
+ return i;
+}
+
+static int cgltf_parse_json_pbr_specular_glossiness(cgltf_options* options, jsmntok_t const* tokens, int i, const uint8_t* json_chunk, cgltf_pbr_specular_glossiness* out_pbr)
+{
+ CGLTF_CHECK_TOKTYPE(tokens[i], JSMN_OBJECT);
+ int size = tokens[i].size;
+ ++i;
+
+ for (int j = 0; j < size; ++j)
+ {
+ CGLTF_CHECK_KEY(tokens[i]);
+
+ if (cgltf_json_strcmp(tokens+i, json_chunk, "diffuseFactor") == 0)
+ {
+ i = cgltf_parse_json_float_array(tokens, i + 1, json_chunk, out_pbr->diffuse_factor, 4);
+ }
+ else if (cgltf_json_strcmp(tokens+i, json_chunk, "specularFactor") == 0)
+ {
+ i = cgltf_parse_json_float_array(tokens, i + 1, json_chunk, out_pbr->specular_factor, 3);
+ }
+ else if (cgltf_json_strcmp(tokens+i, json_chunk, "glossinessFactor") == 0)
+ {
+ ++i;
+ out_pbr->glossiness_factor = cgltf_json_to_float(tokens + i, json_chunk);
+ ++i;
+ }
+ else if (cgltf_json_strcmp(tokens+i, json_chunk, "diffuseTexture") == 0)
+ {
+ i = cgltf_parse_json_texture_view(options, tokens, i + 1, json_chunk, &out_pbr->diffuse_texture);
+ }
+ else if (cgltf_json_strcmp(tokens+i, json_chunk, "specularGlossinessTexture") == 0)
+ {
+ i = cgltf_parse_json_texture_view(options, tokens, i + 1, json_chunk, &out_pbr->specular_glossiness_texture);
+ }
+ else
+ {
+ i = cgltf_skip_json(tokens, i+1);
+ }
+
+ if (i < 0)
+ {
+ return i;
+ }
+ }
+
+ return i;
+}
+
+static int cgltf_parse_json_clearcoat(cgltf_options* options, jsmntok_t const* tokens, int i, const uint8_t* json_chunk, cgltf_clearcoat* out_clearcoat)
+{
+ CGLTF_CHECK_TOKTYPE(tokens[i], JSMN_OBJECT);
+ int size = tokens[i].size;
+ ++i;
+
+ for (int j = 0; j < size; ++j)
+ {
+ CGLTF_CHECK_KEY(tokens[i]);
+
+ if (cgltf_json_strcmp(tokens+i, json_chunk, "clearcoatFactor") == 0)
+ {
+ ++i;
+ out_clearcoat->clearcoat_factor = cgltf_json_to_float(tokens + i, json_chunk);
+ ++i;
+ }
+ else if (cgltf_json_strcmp(tokens+i, json_chunk, "clearcoatRoughnessFactor") == 0)
+ {
+ ++i;
+ out_clearcoat->clearcoat_roughness_factor = cgltf_json_to_float(tokens + i, json_chunk);
+ ++i;
+ }
+ else if (cgltf_json_strcmp(tokens+i, json_chunk, "clearcoatTexture") == 0)
+ {
+ i = cgltf_parse_json_texture_view(options, tokens, i + 1, json_chunk, &out_clearcoat->clearcoat_texture);
+ }
+ else if (cgltf_json_strcmp(tokens+i, json_chunk, "clearcoatRoughnessTexture") == 0)
+ {
+ i = cgltf_parse_json_texture_view(options, tokens, i + 1, json_chunk, &out_clearcoat->clearcoat_roughness_texture);
+ }
+ else if (cgltf_json_strcmp(tokens+i, json_chunk, "clearcoatNormalTexture") == 0)
+ {
+ i = cgltf_parse_json_texture_view(options, tokens, i + 1, json_chunk, &out_clearcoat->clearcoat_normal_texture);
+ }
+ else
+ {
+ i = cgltf_skip_json(tokens, i+1);
+ }
+
+ if (i < 0)
+ {
+ return i;
+ }
+ }
+
+ return i;
+}
+
+static int cgltf_parse_json_ior(jsmntok_t const* tokens, int i, const uint8_t* json_chunk, cgltf_ior* out_ior)
+{
+ CGLTF_CHECK_TOKTYPE(tokens[i], JSMN_OBJECT);
+ int size = tokens[i].size;
+ ++i;
+
+ // Default values
+ out_ior->ior = 1.5f;
+
+ for (int j = 0; j < size; ++j)
+ {
+ CGLTF_CHECK_KEY(tokens[i]);
+
+ if (cgltf_json_strcmp(tokens+i, json_chunk, "ior") == 0)
+ {
+ ++i;
+ out_ior->ior = cgltf_json_to_float(tokens + i, json_chunk);
+ ++i;
+ }
+ else
+ {
+ i = cgltf_skip_json(tokens, i+1);
+ }
+
+ if (i < 0)
+ {
+ return i;
+ }
+ }
+
+ return i;
+}
+
+static int cgltf_parse_json_specular(cgltf_options* options, jsmntok_t const* tokens, int i, const uint8_t* json_chunk, cgltf_specular* out_specular)
+{
+ CGLTF_CHECK_TOKTYPE(tokens[i], JSMN_OBJECT);
+ int size = tokens[i].size;
+ ++i;
+
+ // Default values
+ out_specular->specular_factor = 1.0f;
+ cgltf_fill_float_array(out_specular->specular_color_factor, 3, 1.0f);
+
+ for (int j = 0; j < size; ++j)
+ {
+ CGLTF_CHECK_KEY(tokens[i]);
+
+ if (cgltf_json_strcmp(tokens+i, json_chunk, "specularFactor") == 0)
+ {
+ ++i;
+ out_specular->specular_factor = cgltf_json_to_float(tokens + i, json_chunk);
+ ++i;
+ }
+ else if (cgltf_json_strcmp(tokens+i, json_chunk, "specularColorFactor") == 0)
+ {
+ i = cgltf_parse_json_float_array(tokens, i + 1, json_chunk, out_specular->specular_color_factor, 3);
+ }
+ else if (cgltf_json_strcmp(tokens+i, json_chunk, "specularTexture") == 0)
+ {
+ i = cgltf_parse_json_texture_view(options, tokens, i + 1, json_chunk, &out_specular->specular_texture);
+ }
+ else if (cgltf_json_strcmp(tokens + i, json_chunk, "specularColorTexture") == 0)
+ {
+ i = cgltf_parse_json_texture_view(options, tokens, i + 1, json_chunk, &out_specular->specular_color_texture);
+ }
+ else
+ {
+ i = cgltf_skip_json(tokens, i+1);
+ }
+
+ if (i < 0)
+ {
+ return i;
+ }
+ }
+
+ return i;
+}
+
+static int cgltf_parse_json_transmission(cgltf_options* options, jsmntok_t const* tokens, int i, const uint8_t* json_chunk, cgltf_transmission* out_transmission)
+{
+ CGLTF_CHECK_TOKTYPE(tokens[i], JSMN_OBJECT);
+ int size = tokens[i].size;
+ ++i;
+
+ for (int j = 0; j < size; ++j)
+ {
+ CGLTF_CHECK_KEY(tokens[i]);
+
+ if (cgltf_json_strcmp(tokens+i, json_chunk, "transmissionFactor") == 0)
+ {
+ ++i;
+ out_transmission->transmission_factor = cgltf_json_to_float(tokens + i, json_chunk);
+ ++i;
+ }
+ else if (cgltf_json_strcmp(tokens+i, json_chunk, "transmissionTexture") == 0)
+ {
+ i = cgltf_parse_json_texture_view(options, tokens, i + 1, json_chunk, &out_transmission->transmission_texture);
+ }
+ else
+ {
+ i = cgltf_skip_json(tokens, i+1);
+ }
+
+ if (i < 0)
+ {
+ return i;
+ }
+ }
+
+ return i;
+}
+
+static int cgltf_parse_json_volume(cgltf_options* options, jsmntok_t const* tokens, int i, const uint8_t* json_chunk, cgltf_volume* out_volume)
+{
+ CGLTF_CHECK_TOKTYPE(tokens[i], JSMN_OBJECT);
+ int size = tokens[i].size;
+ ++i;
+
+ for (int j = 0; j < size; ++j)
+ {
+ CGLTF_CHECK_KEY(tokens[i]);
+
+ if (cgltf_json_strcmp(tokens + i, json_chunk, "thicknessFactor") == 0)
+ {
+ ++i;
+ out_volume->thickness_factor = cgltf_json_to_float(tokens + i, json_chunk);
+ ++i;
+ }
+ else if (cgltf_json_strcmp(tokens + i, json_chunk, "thicknessTexture") == 0)
+ {
+ i = cgltf_parse_json_texture_view(options, tokens, i + 1, json_chunk, &out_volume->thickness_texture);
+ }
+ else if (cgltf_json_strcmp(tokens + i, json_chunk, "attenuationColor") == 0)
+ {
+ i = cgltf_parse_json_float_array(tokens, i + 1, json_chunk, out_volume->attenuation_color, 3);
+ }
+ else if (cgltf_json_strcmp(tokens + i, json_chunk, "attenuationDistance") == 0)
+ {
+ ++i;
+ out_volume->attenuation_distance = cgltf_json_to_float(tokens + i, json_chunk);
+ ++i;
+ }
+ else
+ {
+ i = cgltf_skip_json(tokens, i + 1);
+ }
+
+ if (i < 0)
+ {
+ return i;
+ }
+ }
+
+ return i;
+}
+
+static int cgltf_parse_json_sheen(cgltf_options* options, jsmntok_t const* tokens, int i, const uint8_t* json_chunk, cgltf_sheen* out_sheen)
+{
+ CGLTF_CHECK_TOKTYPE(tokens[i], JSMN_OBJECT);
+ int size = tokens[i].size;
+ ++i;
+
+ for (int j = 0; j < size; ++j)
+ {
+ CGLTF_CHECK_KEY(tokens[i]);
+
+ if (cgltf_json_strcmp(tokens+i, json_chunk, "sheenColorFactor") == 0)
+ {
+ i = cgltf_parse_json_float_array(tokens, i + 1, json_chunk, out_sheen->sheen_color_factor, 3);
+ }
+ else if (cgltf_json_strcmp(tokens+i, json_chunk, "sheenColorTexture") == 0)
+ {
+ i = cgltf_parse_json_texture_view(options, tokens, i + 1, json_chunk, &out_sheen->sheen_color_texture);
+ }
+ else if (cgltf_json_strcmp(tokens+i, json_chunk, "sheenRoughnessFactor") == 0)
+ {
+ ++i;
+ out_sheen->sheen_roughness_factor = cgltf_json_to_float(tokens + i, json_chunk);
+ ++i;
+ }
+ else if (cgltf_json_strcmp(tokens+i, json_chunk, "sheenRoughnessTexture") == 0)
+ {
+ i = cgltf_parse_json_texture_view(options, tokens, i + 1, json_chunk, &out_sheen->sheen_roughness_texture);
+ }
+ else
+ {
+ i = cgltf_skip_json(tokens, i+1);
+ }
+
+ if (i < 0)
+ {
+ return i;
+ }
+ }
+
+ return i;
+}
+
+static int cgltf_parse_json_emissive_strength(jsmntok_t const* tokens, int i, const uint8_t* json_chunk, cgltf_emissive_strength* out_emissive_strength)
+{
+ CGLTF_CHECK_TOKTYPE(tokens[i], JSMN_OBJECT);
+ int size = tokens[i].size;
+ ++i;
+
+ // Default
+ out_emissive_strength->emissive_strength = 1.f;
+
+ for (int j = 0; j < size; ++j)
+ {
+ CGLTF_CHECK_KEY(tokens[i]);
+
+ if (cgltf_json_strcmp(tokens + i, json_chunk, "emissiveStrength") == 0)
+ {
+ ++i;
+ out_emissive_strength->emissive_strength = cgltf_json_to_float(tokens + i, json_chunk);
+ ++i;
+ }
+ else
+ {
+ i = cgltf_skip_json(tokens, i + 1);
+ }
+
+ if (i < 0)
+ {
+ return i;
+ }
+ }
+
+ return i;
+}
+
+static int cgltf_parse_json_iridescence(cgltf_options* options, jsmntok_t const* tokens, int i, const uint8_t* json_chunk, cgltf_iridescence* out_iridescence)
+{
+ CGLTF_CHECK_TOKTYPE(tokens[i], JSMN_OBJECT);
+ int size = tokens[i].size;
+ ++i;
+
+ // Default
+ out_iridescence->iridescence_ior = 1.3f;
+ out_iridescence->iridescence_thickness_min = 100.f;
+ out_iridescence->iridescence_thickness_max = 400.f;
+
+ for (int j = 0; j < size; ++j)
+ {
+ CGLTF_CHECK_KEY(tokens[i]);
+
+ if (cgltf_json_strcmp(tokens + i, json_chunk, "iridescenceFactor") == 0)
+ {
+ ++i;
+ out_iridescence->iridescence_factor = cgltf_json_to_float(tokens + i, json_chunk);
+ ++i;
+ }
+ else if (cgltf_json_strcmp(tokens + i, json_chunk, "iridescenceTexture") == 0)
+ {
+ i = cgltf_parse_json_texture_view(options, tokens, i + 1, json_chunk, &out_iridescence->iridescence_texture);
+ }
+ else if (cgltf_json_strcmp(tokens + i, json_chunk, "iridescenceIor") == 0)
+ {
+ ++i;
+ out_iridescence->iridescence_ior = cgltf_json_to_float(tokens + i, json_chunk);
+ ++i;
+ }
+ else if (cgltf_json_strcmp(tokens + i, json_chunk, "iridescenceThicknessMinimum") == 0)
+ {
+ ++i;
+ out_iridescence->iridescence_thickness_min = cgltf_json_to_float(tokens + i, json_chunk);
+ ++i;
+ }
+ else if (cgltf_json_strcmp(tokens + i, json_chunk, "iridescenceThicknessMaximum") == 0)
+ {
+ ++i;
+ out_iridescence->iridescence_thickness_max = cgltf_json_to_float(tokens + i, json_chunk);
+ ++i;
+ }
+ else if (cgltf_json_strcmp(tokens + i, json_chunk, "iridescenceThicknessTexture") == 0)
+ {
+ i = cgltf_parse_json_texture_view(options, tokens, i + 1, json_chunk, &out_iridescence->iridescence_thickness_texture);
+ }
+ else
+ {
+ i = cgltf_skip_json(tokens, i + 1);
+ }
+
+ if (i < 0)
+ {
+ return i;
+ }
+ }
+
+ return i;
+}
+
+static int cgltf_parse_json_diffuse_transmission(cgltf_options* options, jsmntok_t const* tokens, int i, const uint8_t* json_chunk, cgltf_diffuse_transmission* out_diff_transmission)
+{
+ CGLTF_CHECK_TOKTYPE(tokens[i], JSMN_OBJECT);
+ int size = tokens[i].size;
+ ++i;
+
+ // Defaults
+ cgltf_fill_float_array(out_diff_transmission->diffuse_transmission_color_factor, 3, 1.0f);
+ out_diff_transmission->diffuse_transmission_factor = 0.f;
+
+ for (int j = 0; j < size; ++j)
+ {
+ CGLTF_CHECK_KEY(tokens[i]);
+
+ if (cgltf_json_strcmp(tokens + i, json_chunk, "diffuseTransmissionFactor") == 0)
+ {
+ ++i;
+ out_diff_transmission->diffuse_transmission_factor = cgltf_json_to_float(tokens + i, json_chunk);
+ ++i;
+ }
+ else if (cgltf_json_strcmp(tokens + i, json_chunk, "diffuseTransmissionTexture") == 0)
+ {
+ i = cgltf_parse_json_texture_view(options, tokens, i + 1, json_chunk, &out_diff_transmission->diffuse_transmission_texture);
+ }
+ else if (cgltf_json_strcmp(tokens + i, json_chunk, "diffuseTransmissionColorFactor") == 0)
+ {
+ i = cgltf_parse_json_float_array(tokens, i + 1, json_chunk, out_diff_transmission->diffuse_transmission_color_factor, 3);
+ }
+ else if (cgltf_json_strcmp(tokens + i, json_chunk, "diffuseTransmissionColorTexture") == 0)
+ {
+ i = cgltf_parse_json_texture_view(options, tokens, i + 1, json_chunk, &out_diff_transmission->diffuse_transmission_color_texture);
+ }
+ else
+ {
+ i = cgltf_skip_json(tokens, i + 1);
+ }
+
+ if (i < 0)
+ {
+ return i;
+ }
+ }
+
+ return i;
+}
+
+static int cgltf_parse_json_anisotropy(cgltf_options* options, jsmntok_t const* tokens, int i, const uint8_t* json_chunk, cgltf_anisotropy* out_anisotropy)
+{
+ CGLTF_CHECK_TOKTYPE(tokens[i], JSMN_OBJECT);
+ int size = tokens[i].size;
+ ++i;
+
+
+ for (int j = 0; j < size; ++j)
+ {
+ CGLTF_CHECK_KEY(tokens[i]);
+
+ if (cgltf_json_strcmp(tokens + i, json_chunk, "anisotropyStrength") == 0)
+ {
+ ++i;
+ out_anisotropy->anisotropy_strength = cgltf_json_to_float(tokens + i, json_chunk);
+ ++i;
+ }
+ else if (cgltf_json_strcmp(tokens + i, json_chunk, "anisotropyRotation") == 0)
+ {
+ ++i;
+ out_anisotropy->anisotropy_rotation = cgltf_json_to_float(tokens + i, json_chunk);
+ ++i;
+ }
+ else if (cgltf_json_strcmp(tokens + i, json_chunk, "anisotropyTexture") == 0)
+ {
+ i = cgltf_parse_json_texture_view(options, tokens, i + 1, json_chunk, &out_anisotropy->anisotropy_texture);
+ }
+ else
+ {
+ i = cgltf_skip_json(tokens, i + 1);
+ }
+
+ if (i < 0)
+ {
+ return i;
+ }
+ }
+
+ return i;
+}
+
+static int cgltf_parse_json_dispersion(jsmntok_t const* tokens, int i, const uint8_t* json_chunk, cgltf_dispersion* out_dispersion)
+{
+ CGLTF_CHECK_TOKTYPE(tokens[i], JSMN_OBJECT);
+ int size = tokens[i].size;
+ ++i;
+
+
+ for (int j = 0; j < size; ++j)
+ {
+ CGLTF_CHECK_KEY(tokens[i]);
+
+ if (cgltf_json_strcmp(tokens + i, json_chunk, "dispersion") == 0)
+ {
+ ++i;
+ out_dispersion->dispersion = cgltf_json_to_float(tokens + i, json_chunk);
+ ++i;
+ }
+ else
+ {
+ i = cgltf_skip_json(tokens, i + 1);
+ }
+
+ if (i < 0)
+ {
+ return i;
+ }
+ }
+
+ return i;
+}
+
+static int cgltf_parse_json_image(cgltf_options* options, jsmntok_t const* tokens, int i, const uint8_t* json_chunk, cgltf_image* out_image)
+{
+ CGLTF_CHECK_TOKTYPE(tokens[i], JSMN_OBJECT);
+
+ int size = tokens[i].size;
+ ++i;
+
+ for (int j = 0; j < size; ++j)
+ {
+ CGLTF_CHECK_KEY(tokens[i]);
+
+ if (cgltf_json_strcmp(tokens + i, json_chunk, "uri") == 0)
+ {
+ i = cgltf_parse_json_string(options, tokens, i + 1, json_chunk, &out_image->uri);
+ }
+ else if (cgltf_json_strcmp(tokens+i, json_chunk, "bufferView") == 0)
+ {
+ ++i;
+ out_image->buffer_view = CGLTF_PTRINDEX(cgltf_buffer_view, cgltf_json_to_int(tokens + i, json_chunk));
+ ++i;
+ }
+ else if (cgltf_json_strcmp(tokens + i, json_chunk, "mimeType") == 0)
+ {
+ i = cgltf_parse_json_string(options, tokens, i + 1, json_chunk, &out_image->mime_type);
+ }
+ else if (cgltf_json_strcmp(tokens + i, json_chunk, "name") == 0)
+ {
+ i = cgltf_parse_json_string(options, tokens, i + 1, json_chunk, &out_image->name);
+ }
+ else if (cgltf_json_strcmp(tokens + i, json_chunk, "extras") == 0)
+ {
+ i = cgltf_parse_json_extras(options, tokens, i + 1, json_chunk, &out_image->extras);
+ }
+ else if (cgltf_json_strcmp(tokens + i, json_chunk, "extensions") == 0)
+ {
+ i = cgltf_parse_json_unprocessed_extensions(options, tokens, i, json_chunk, &out_image->extensions_count, &out_image->extensions);
+ }
+ else
+ {
+ i = cgltf_skip_json(tokens, i + 1);
+ }
+
+ if (i < 0)
+ {
+ return i;
+ }
+ }
+
+ return i;
+}
+
+static int cgltf_parse_json_sampler(cgltf_options* options, jsmntok_t const* tokens, int i, const uint8_t* json_chunk, cgltf_sampler* out_sampler)
+{
+ (void)options;
+ CGLTF_CHECK_TOKTYPE(tokens[i], JSMN_OBJECT);
+
+ out_sampler->wrap_s = cgltf_wrap_mode_repeat;
+ out_sampler->wrap_t = cgltf_wrap_mode_repeat;
+
+ int size = tokens[i].size;
+ ++i;
+
+ for (int j = 0; j < size; ++j)
+ {
+ CGLTF_CHECK_KEY(tokens[i]);
+
+ if (cgltf_json_strcmp(tokens + i, json_chunk, "name") == 0)
+ {
+ i = cgltf_parse_json_string(options, tokens, i + 1, json_chunk, &out_sampler->name);
+ }
+ else if (cgltf_json_strcmp(tokens + i, json_chunk, "magFilter") == 0)
+ {
+ ++i;
+ out_sampler->mag_filter
+ = (cgltf_filter_type)cgltf_json_to_int(tokens + i, json_chunk);
+ ++i;
+ }
+ else if (cgltf_json_strcmp(tokens + i, json_chunk, "minFilter") == 0)
+ {
+ ++i;
+ out_sampler->min_filter
+ = (cgltf_filter_type)cgltf_json_to_int(tokens + i, json_chunk);
+ ++i;
+ }
+ else if (cgltf_json_strcmp(tokens + i, json_chunk, "wrapS") == 0)
+ {
+ ++i;
+ out_sampler->wrap_s
+ = (cgltf_wrap_mode)cgltf_json_to_int(tokens + i, json_chunk);
+ ++i;
+ }
+ else if (cgltf_json_strcmp(tokens + i, json_chunk, "wrapT") == 0)
+ {
+ ++i;
+ out_sampler->wrap_t
+ = (cgltf_wrap_mode)cgltf_json_to_int(tokens + i, json_chunk);
+ ++i;
+ }
+ else if (cgltf_json_strcmp(tokens + i, json_chunk, "extras") == 0)
+ {
+ i = cgltf_parse_json_extras(options, tokens, i + 1, json_chunk, &out_sampler->extras);
+ }
+ else if (cgltf_json_strcmp(tokens + i, json_chunk, "extensions") == 0)
+ {
+ i = cgltf_parse_json_unprocessed_extensions(options, tokens, i, json_chunk, &out_sampler->extensions_count, &out_sampler->extensions);
+ }
+ else
+ {
+ i = cgltf_skip_json(tokens, i + 1);
+ }
+
+ if (i < 0)
+ {
+ return i;
+ }
+ }
+
+ return i;
+}
+
+static int cgltf_parse_json_texture(cgltf_options* options, jsmntok_t const* tokens, int i, const uint8_t* json_chunk, cgltf_texture* out_texture)
+{
+ CGLTF_CHECK_TOKTYPE(tokens[i], JSMN_OBJECT);
+
+ int size = tokens[i].size;
+ ++i;
+
+ for (int j = 0; j < size; ++j)
+ {
+ CGLTF_CHECK_KEY(tokens[i]);
+
+ if (cgltf_json_strcmp(tokens+i, json_chunk, "name") == 0)
+ {
+ i = cgltf_parse_json_string(options, tokens, i + 1, json_chunk, &out_texture->name);
+ }
+ else if (cgltf_json_strcmp(tokens + i, json_chunk, "sampler") == 0)
+ {
+ ++i;
+ out_texture->sampler = CGLTF_PTRINDEX(cgltf_sampler, cgltf_json_to_int(tokens + i, json_chunk));
+ ++i;
+ }
+ else if (cgltf_json_strcmp(tokens + i, json_chunk, "source") == 0)
+ {
+ ++i;
+ out_texture->image = CGLTF_PTRINDEX(cgltf_image, cgltf_json_to_int(tokens + i, json_chunk));
+ ++i;
+ }
+ else if (cgltf_json_strcmp(tokens + i, json_chunk, "extras") == 0)
+ {
+ i = cgltf_parse_json_extras(options, tokens, i + 1, json_chunk, &out_texture->extras);
+ }
+ else if (cgltf_json_strcmp(tokens + i, json_chunk, "extensions") == 0)
+ {
+ ++i;
+
+ CGLTF_CHECK_TOKTYPE(tokens[i], JSMN_OBJECT);
+ if (out_texture->extensions)
+ {
+ return CGLTF_ERROR_JSON;
+ }
+
+ int extensions_size = tokens[i].size;
+ ++i;
+ out_texture->extensions = (cgltf_extension*)cgltf_calloc(options, sizeof(cgltf_extension), extensions_size);
+ out_texture->extensions_count = 0;
+
+ if (!out_texture->extensions)
+ {
+ return CGLTF_ERROR_NOMEM;
+ }
+
+ for (int k = 0; k < extensions_size; ++k)
+ {
+ CGLTF_CHECK_KEY(tokens[i]);
+
+ if (cgltf_json_strcmp(tokens + i, json_chunk, "KHR_texture_basisu") == 0)
+ {
+ out_texture->has_basisu = 1;
+ ++i;
+ CGLTF_CHECK_TOKTYPE(tokens[i], JSMN_OBJECT);
+ int num_properties = tokens[i].size;
+ ++i;
+
+ for (int t = 0; t < num_properties; ++t)
+ {
+ CGLTF_CHECK_KEY(tokens[i]);
+
+ if (cgltf_json_strcmp(tokens + i, json_chunk, "source") == 0)
+ {
+ ++i;
+ out_texture->basisu_image = CGLTF_PTRINDEX(cgltf_image, cgltf_json_to_int(tokens + i, json_chunk));
+ ++i;
+ }
+ else
+ {
+ i = cgltf_skip_json(tokens, i + 1);
+ }
+ if (i < 0)
+ {
+ return i;
+ }
+ }
+ }
+ else if (cgltf_json_strcmp(tokens + i, json_chunk, "EXT_texture_webp") == 0)
+ {
+ out_texture->has_webp = 1;
+ ++i;
+ CGLTF_CHECK_TOKTYPE(tokens[i], JSMN_OBJECT);
+ int num_properties = tokens[i].size;
+ ++i;
+
+ for (int t = 0; t < num_properties; ++t)
+ {
+ CGLTF_CHECK_KEY(tokens[i]);
+
+ if (cgltf_json_strcmp(tokens + i, json_chunk, "source") == 0)
+ {
+ ++i;
+ out_texture->webp_image = CGLTF_PTRINDEX(cgltf_image, cgltf_json_to_int(tokens + i, json_chunk));
+ ++i;
+ }
+ else
+ {
+ i = cgltf_skip_json(tokens, i + 1);
+ }
+ if (i < 0)
+ {
+ return i;
+ }
+ }
+ }
+ else
+ {
+ i = cgltf_parse_json_unprocessed_extension(options, tokens, i, json_chunk, &(out_texture->extensions[out_texture->extensions_count++]));
+ }
+
+ if (i < 0)
+ {
+ return i;
+ }
+ }
+ }
+ else
+ {
+ i = cgltf_skip_json(tokens, i + 1);
+ }
+
+ if (i < 0)
+ {
+ return i;
+ }
+ }
+
+ return i;
+}
+
+static int cgltf_parse_json_material(cgltf_options* options, jsmntok_t const* tokens, int i, const uint8_t* json_chunk, cgltf_material* out_material)
+{
+ CGLTF_CHECK_TOKTYPE(tokens[i], JSMN_OBJECT);
+
+ cgltf_fill_float_array(out_material->pbr_metallic_roughness.base_color_factor, 4, 1.0f);
+ out_material->pbr_metallic_roughness.metallic_factor = 1.0f;
+ out_material->pbr_metallic_roughness.roughness_factor = 1.0f;
+
+ cgltf_fill_float_array(out_material->pbr_specular_glossiness.diffuse_factor, 4, 1.0f);
+ cgltf_fill_float_array(out_material->pbr_specular_glossiness.specular_factor, 3, 1.0f);
+ out_material->pbr_specular_glossiness.glossiness_factor = 1.0f;
+
+ cgltf_fill_float_array(out_material->volume.attenuation_color, 3, 1.0f);
+ out_material->volume.attenuation_distance = FLT_MAX;
+
+ out_material->alpha_cutoff = 0.5f;
+
+ int size = tokens[i].size;
+ ++i;
+
+ for (int j = 0; j < size; ++j)
+ {
+ CGLTF_CHECK_KEY(tokens[i]);
+
+ if (cgltf_json_strcmp(tokens+i, json_chunk, "name") == 0)
+ {
+ i = cgltf_parse_json_string(options, tokens, i + 1, json_chunk, &out_material->name);
+ }
+ else if (cgltf_json_strcmp(tokens+i, json_chunk, "pbrMetallicRoughness") == 0)
+ {
+ out_material->has_pbr_metallic_roughness = 1;
+ i = cgltf_parse_json_pbr_metallic_roughness(options, tokens, i + 1, json_chunk, &out_material->pbr_metallic_roughness);
+ }
+ else if (cgltf_json_strcmp(tokens+i, json_chunk, "emissiveFactor") == 0)
+ {
+ i = cgltf_parse_json_float_array(tokens, i + 1, json_chunk, out_material->emissive_factor, 3);
+ }
+ else if (cgltf_json_strcmp(tokens + i, json_chunk, "normalTexture") == 0)
+ {
+ i = cgltf_parse_json_texture_view(options, tokens, i + 1, json_chunk,
+ &out_material->normal_texture);
+ }
+ else if (cgltf_json_strcmp(tokens + i, json_chunk, "occlusionTexture") == 0)
+ {
+ i = cgltf_parse_json_texture_view(options, tokens, i + 1, json_chunk,
+ &out_material->occlusion_texture);
+ }
+ else if (cgltf_json_strcmp(tokens + i, json_chunk, "emissiveTexture") == 0)
+ {
+ i = cgltf_parse_json_texture_view(options, tokens, i + 1, json_chunk,
+ &out_material->emissive_texture);
+ }
+ else if (cgltf_json_strcmp(tokens + i, json_chunk, "alphaMode") == 0)
+ {
+ ++i;
+ if (cgltf_json_strcmp(tokens + i, json_chunk, "OPAQUE") == 0)
+ {
+ out_material->alpha_mode = cgltf_alpha_mode_opaque;
+ }
+ else if (cgltf_json_strcmp(tokens + i, json_chunk, "MASK") == 0)
+ {
+ out_material->alpha_mode = cgltf_alpha_mode_mask;
+ }
+ else if (cgltf_json_strcmp(tokens + i, json_chunk, "BLEND") == 0)
+ {
+ out_material->alpha_mode = cgltf_alpha_mode_blend;
+ }
+ ++i;
+ }
+ else if (cgltf_json_strcmp(tokens + i, json_chunk, "alphaCutoff") == 0)
+ {
+ ++i;
+ out_material->alpha_cutoff = cgltf_json_to_float(tokens + i, json_chunk);
+ ++i;
+ }
+ else if (cgltf_json_strcmp(tokens + i, json_chunk, "doubleSided") == 0)
+ {
+ ++i;
+ out_material->double_sided =
+ cgltf_json_to_bool(tokens + i, json_chunk);
+ ++i;
+ }
+ else if (cgltf_json_strcmp(tokens + i, json_chunk, "extras") == 0)
+ {
+ i = cgltf_parse_json_extras(options, tokens, i + 1, json_chunk, &out_material->extras);
+ }
+ else if (cgltf_json_strcmp(tokens + i, json_chunk, "extensions") == 0)
+ {
+ ++i;
+
+ CGLTF_CHECK_TOKTYPE(tokens[i], JSMN_OBJECT);
+ if(out_material->extensions)
+ {
+ return CGLTF_ERROR_JSON;
+ }
+
+ int extensions_size = tokens[i].size;
+ ++i;
+ out_material->extensions = (cgltf_extension*)cgltf_calloc(options, sizeof(cgltf_extension), extensions_size);
+ out_material->extensions_count= 0;
+
+ if (!out_material->extensions)
+ {
+ return CGLTF_ERROR_NOMEM;
+ }
+
+ for (int k = 0; k < extensions_size; ++k)
+ {
+ CGLTF_CHECK_KEY(tokens[i]);
+
+ if (cgltf_json_strcmp(tokens+i, json_chunk, "KHR_materials_pbrSpecularGlossiness") == 0)
+ {
+ out_material->has_pbr_specular_glossiness = 1;
+ i = cgltf_parse_json_pbr_specular_glossiness(options, tokens, i + 1, json_chunk, &out_material->pbr_specular_glossiness);
+ }
+ else if (cgltf_json_strcmp(tokens+i, json_chunk, "KHR_materials_unlit") == 0)
+ {
+ out_material->unlit = 1;
+ i = cgltf_skip_json(tokens, i+1);
+ }
+ else if (cgltf_json_strcmp(tokens+i, json_chunk, "KHR_materials_clearcoat") == 0)
+ {
+ out_material->has_clearcoat = 1;
+ i = cgltf_parse_json_clearcoat(options, tokens, i + 1, json_chunk, &out_material->clearcoat);
+ }
+ else if (cgltf_json_strcmp(tokens+i, json_chunk, "KHR_materials_ior") == 0)
+ {
+ out_material->has_ior = 1;
+ i = cgltf_parse_json_ior(tokens, i + 1, json_chunk, &out_material->ior);
+ }
+ else if (cgltf_json_strcmp(tokens+i, json_chunk, "KHR_materials_specular") == 0)
+ {
+ out_material->has_specular = 1;
+ i = cgltf_parse_json_specular(options, tokens, i + 1, json_chunk, &out_material->specular);
+ }
+ else if (cgltf_json_strcmp(tokens+i, json_chunk, "KHR_materials_transmission") == 0)
+ {
+ out_material->has_transmission = 1;
+ i = cgltf_parse_json_transmission(options, tokens, i + 1, json_chunk, &out_material->transmission);
+ }
+ else if (cgltf_json_strcmp(tokens + i, json_chunk, "KHR_materials_volume") == 0)
+ {
+ out_material->has_volume = 1;
+ i = cgltf_parse_json_volume(options, tokens, i + 1, json_chunk, &out_material->volume);
+ }
+ else if (cgltf_json_strcmp(tokens+i, json_chunk, "KHR_materials_sheen") == 0)
+ {
+ out_material->has_sheen = 1;
+ i = cgltf_parse_json_sheen(options, tokens, i + 1, json_chunk, &out_material->sheen);
+ }
+ else if (cgltf_json_strcmp(tokens + i, json_chunk, "KHR_materials_emissive_strength") == 0)
+ {
+ out_material->has_emissive_strength = 1;
+ i = cgltf_parse_json_emissive_strength(tokens, i + 1, json_chunk, &out_material->emissive_strength);
+ }
+ else if (cgltf_json_strcmp(tokens + i, json_chunk, "KHR_materials_iridescence") == 0)
+ {
+ out_material->has_iridescence = 1;
+ i = cgltf_parse_json_iridescence(options, tokens, i + 1, json_chunk, &out_material->iridescence);
+ }
+ else if (cgltf_json_strcmp(tokens + i, json_chunk, "KHR_materials_diffuse_transmission") == 0)
+ {
+ out_material->has_diffuse_transmission = 1;
+ i = cgltf_parse_json_diffuse_transmission(options, tokens, i + 1, json_chunk, &out_material->diffuse_transmission);
+ }
+ else if (cgltf_json_strcmp(tokens + i, json_chunk, "KHR_materials_anisotropy") == 0)
+ {
+ out_material->has_anisotropy = 1;
+ i = cgltf_parse_json_anisotropy(options, tokens, i + 1, json_chunk, &out_material->anisotropy);
+ }
+ else if (cgltf_json_strcmp(tokens + i, json_chunk, "KHR_materials_dispersion") == 0)
+ {
+ out_material->has_dispersion = 1;
+ i = cgltf_parse_json_dispersion(tokens, i + 1, json_chunk, &out_material->dispersion);
+ }
+ else
+ {
+ i = cgltf_parse_json_unprocessed_extension(options, tokens, i, json_chunk, &(out_material->extensions[out_material->extensions_count++]));
+ }
+
+ if (i < 0)
+ {
+ return i;
+ }
+ }
+ }
+ else
+ {
+ i = cgltf_skip_json(tokens, i+1);
+ }
+
+ if (i < 0)
+ {
+ return i;
+ }
+ }
+
+ return i;
+}
+
+static int cgltf_parse_json_accessors(cgltf_options* options, jsmntok_t const* tokens, int i, const uint8_t* json_chunk, cgltf_data* out_data)
+{
+ i = cgltf_parse_json_array(options, tokens, i, json_chunk, sizeof(cgltf_accessor), (void**)&out_data->accessors, &out_data->accessors_count);
+ if (i < 0)
+ {
+ return i;
+ }
+
+ for (cgltf_size j = 0; j < out_data->accessors_count; ++j)
+ {
+ i = cgltf_parse_json_accessor(options, tokens, i, json_chunk, &out_data->accessors[j]);
+ if (i < 0)
+ {
+ return i;
+ }
+ }
+ return i;
+}
+
+static int cgltf_parse_json_materials(cgltf_options* options, jsmntok_t const* tokens, int i, const uint8_t* json_chunk, cgltf_data* out_data)
+{
+ i = cgltf_parse_json_array(options, tokens, i, json_chunk, sizeof(cgltf_material), (void**)&out_data->materials, &out_data->materials_count);
+ if (i < 0)
+ {
+ return i;
+ }
+
+ for (cgltf_size j = 0; j < out_data->materials_count; ++j)
+ {
+ i = cgltf_parse_json_material(options, tokens, i, json_chunk, &out_data->materials[j]);
+ if (i < 0)
+ {
+ return i;
+ }
+ }
+ return i;
+}
+
+static int cgltf_parse_json_images(cgltf_options* options, jsmntok_t const* tokens, int i, const uint8_t* json_chunk, cgltf_data* out_data)
+{
+ i = cgltf_parse_json_array(options, tokens, i, json_chunk, sizeof(cgltf_image), (void**)&out_data->images, &out_data->images_count);
+ if (i < 0)
+ {
+ return i;
+ }
+
+ for (cgltf_size j = 0; j < out_data->images_count; ++j)
+ {
+ i = cgltf_parse_json_image(options, tokens, i, json_chunk, &out_data->images[j]);
+ if (i < 0)
+ {
+ return i;
+ }
+ }
+ return i;
+}
+
+static int cgltf_parse_json_textures(cgltf_options* options, jsmntok_t const* tokens, int i, const uint8_t* json_chunk, cgltf_data* out_data)
+{
+ i = cgltf_parse_json_array(options, tokens, i, json_chunk, sizeof(cgltf_texture), (void**)&out_data->textures, &out_data->textures_count);
+ if (i < 0)
+ {
+ return i;
+ }
+
+ for (cgltf_size j = 0; j < out_data->textures_count; ++j)
+ {
+ i = cgltf_parse_json_texture(options, tokens, i, json_chunk, &out_data->textures[j]);
+ if (i < 0)
+ {
+ return i;
+ }
+ }
+ return i;
+}
+
+static int cgltf_parse_json_samplers(cgltf_options* options, jsmntok_t const* tokens, int i, const uint8_t* json_chunk, cgltf_data* out_data)
+{
+ i = cgltf_parse_json_array(options, tokens, i, json_chunk, sizeof(cgltf_sampler), (void**)&out_data->samplers, &out_data->samplers_count);
+ if (i < 0)
+ {
+ return i;
+ }
+
+ for (cgltf_size j = 0; j < out_data->samplers_count; ++j)
+ {
+ i = cgltf_parse_json_sampler(options, tokens, i, json_chunk, &out_data->samplers[j]);
+ if (i < 0)
+ {
+ return i;
+ }
+ }
+ return i;
+}
+
+static int cgltf_parse_json_meshopt_compression(cgltf_options* options, jsmntok_t const* tokens, int i, const uint8_t* json_chunk, cgltf_meshopt_compression* out_meshopt_compression)
+{
+ (void)options;
+ CGLTF_CHECK_TOKTYPE(tokens[i], JSMN_OBJECT);
+
+ int size = tokens[i].size;
+ ++i;
+
+ for (int j = 0; j < size; ++j)
+ {
+ CGLTF_CHECK_KEY(tokens[i]);
+
+ if (cgltf_json_strcmp(tokens+i, json_chunk, "buffer") == 0)
+ {
+ ++i;
+ out_meshopt_compression->buffer = CGLTF_PTRINDEX(cgltf_buffer, cgltf_json_to_int(tokens + i, json_chunk));
+ ++i;
+ }
+ else if (cgltf_json_strcmp(tokens+i, json_chunk, "byteOffset") == 0)
+ {
+ ++i;
+ out_meshopt_compression->offset = cgltf_json_to_size(tokens+i, json_chunk);
+ ++i;
+ }
+ else if (cgltf_json_strcmp(tokens+i, json_chunk, "byteLength") == 0)
+ {
+ ++i;
+ out_meshopt_compression->size = cgltf_json_to_size(tokens+i, json_chunk);
+ ++i;
+ }
+ else if (cgltf_json_strcmp(tokens+i, json_chunk, "byteStride") == 0)
+ {
+ ++i;
+ out_meshopt_compression->stride = cgltf_json_to_size(tokens+i, json_chunk);
+ ++i;
+ }
+ else if (cgltf_json_strcmp(tokens+i, json_chunk, "count") == 0)
+ {
+ ++i;
+ out_meshopt_compression->count = cgltf_json_to_size(tokens+i, json_chunk);
+ ++i;
+ }
+ else if (cgltf_json_strcmp(tokens+i, json_chunk, "mode") == 0)
+ {
+ ++i;
+ if (cgltf_json_strcmp(tokens+i, json_chunk, "ATTRIBUTES") == 0)
+ {
+ out_meshopt_compression->mode = cgltf_meshopt_compression_mode_attributes;
+ }
+ else if (cgltf_json_strcmp(tokens+i, json_chunk, "TRIANGLES") == 0)
+ {
+ out_meshopt_compression->mode = cgltf_meshopt_compression_mode_triangles;
+ }
+ else if (cgltf_json_strcmp(tokens+i, json_chunk, "INDICES") == 0)
+ {
+ out_meshopt_compression->mode = cgltf_meshopt_compression_mode_indices;
+ }
+ ++i;
+ }
+ else if (cgltf_json_strcmp(tokens+i, json_chunk, "filter") == 0)
+ {
+ ++i;
+ if (cgltf_json_strcmp(tokens+i, json_chunk, "NONE") == 0)
+ {
+ out_meshopt_compression->filter = cgltf_meshopt_compression_filter_none;
+ }
+ else if (cgltf_json_strcmp(tokens+i, json_chunk, "OCTAHEDRAL") == 0)
+ {
+ out_meshopt_compression->filter = cgltf_meshopt_compression_filter_octahedral;
+ }
+ else if (cgltf_json_strcmp(tokens+i, json_chunk, "QUATERNION") == 0)
+ {
+ out_meshopt_compression->filter = cgltf_meshopt_compression_filter_quaternion;
+ }
+ else if (cgltf_json_strcmp(tokens+i, json_chunk, "EXPONENTIAL") == 0)
+ {
+ out_meshopt_compression->filter = cgltf_meshopt_compression_filter_exponential;
+ }
+ ++i;
+ }
+ else
+ {
+ i = cgltf_skip_json(tokens, i+1);
+ }
+
+ if (i < 0)
+ {
+ return i;
+ }
+ }
+
+ return i;
+}
+
+static int cgltf_parse_json_buffer_view(cgltf_options* options, jsmntok_t const* tokens, int i, const uint8_t* json_chunk, cgltf_buffer_view* out_buffer_view)
+{
+ CGLTF_CHECK_TOKTYPE(tokens[i], JSMN_OBJECT);
+
+ int size = tokens[i].size;
+ ++i;
+
+ for (int j = 0; j < size; ++j)
+ {
+ CGLTF_CHECK_KEY(tokens[i]);
+
+ if (cgltf_json_strcmp(tokens + i, json_chunk, "name") == 0)
+ {
+ i = cgltf_parse_json_string(options, tokens, i + 1, json_chunk, &out_buffer_view->name);
+ }
+ else if (cgltf_json_strcmp(tokens+i, json_chunk, "buffer") == 0)
+ {
+ ++i;
+ out_buffer_view->buffer = CGLTF_PTRINDEX(cgltf_buffer, cgltf_json_to_int(tokens + i, json_chunk));
+ ++i;
+ }
+ else if (cgltf_json_strcmp(tokens+i, json_chunk, "byteOffset") == 0)
+ {
+ ++i;
+ out_buffer_view->offset =
+ cgltf_json_to_size(tokens+i, json_chunk);
+ ++i;
+ }
+ else if (cgltf_json_strcmp(tokens+i, json_chunk, "byteLength") == 0)
+ {
+ ++i;
+ out_buffer_view->size =
+ cgltf_json_to_size(tokens+i, json_chunk);
+ ++i;
+ }
+ else if (cgltf_json_strcmp(tokens+i, json_chunk, "byteStride") == 0)
+ {
+ ++i;
+ out_buffer_view->stride =
+ cgltf_json_to_size(tokens+i, json_chunk);
+ ++i;
+ }
+ else if (cgltf_json_strcmp(tokens+i, json_chunk, "target") == 0)
+ {
+ ++i;
+ int type = cgltf_json_to_int(tokens+i, json_chunk);
+ switch (type)
+ {
+ case 34962:
+ type = cgltf_buffer_view_type_vertices;
+ break;
+ case 34963:
+ type = cgltf_buffer_view_type_indices;
+ break;
+ default:
+ type = cgltf_buffer_view_type_invalid;
+ break;
+ }
+ out_buffer_view->type = (cgltf_buffer_view_type)type;
+ ++i;
+ }
+ else if (cgltf_json_strcmp(tokens + i, json_chunk, "extras") == 0)
+ {
+ i = cgltf_parse_json_extras(options, tokens, i + 1, json_chunk, &out_buffer_view->extras);
+ }
+ else if (cgltf_json_strcmp(tokens + i, json_chunk, "extensions") == 0)
+ {
+ ++i;
+
+ CGLTF_CHECK_TOKTYPE(tokens[i], JSMN_OBJECT);
+ if(out_buffer_view->extensions)
+ {
+ return CGLTF_ERROR_JSON;
+ }
+
+ int extensions_size = tokens[i].size;
+ out_buffer_view->extensions_count = 0;
+ out_buffer_view->extensions = (cgltf_extension*)cgltf_calloc(options, sizeof(cgltf_extension), extensions_size);
+
+ if (!out_buffer_view->extensions)
+ {
+ return CGLTF_ERROR_NOMEM;
+ }
+
+ ++i;
+ for (int k = 0; k < extensions_size; ++k)
+ {
+ CGLTF_CHECK_KEY(tokens[i]);
+
+ if (cgltf_json_strcmp(tokens+i, json_chunk, "EXT_meshopt_compression") == 0)
+ {
+ out_buffer_view->has_meshopt_compression = 1;
+ i = cgltf_parse_json_meshopt_compression(options, tokens, i + 1, json_chunk, &out_buffer_view->meshopt_compression);
+ }
+ else
+ {
+ i = cgltf_parse_json_unprocessed_extension(options, tokens, i, json_chunk, &(out_buffer_view->extensions[out_buffer_view->extensions_count++]));
+ }
+
+ if (i < 0)
+ {
+ return i;
+ }
+ }
+ }
+ else
+ {
+ i = cgltf_skip_json(tokens, i+1);
+ }
+
+ if (i < 0)
+ {
+ return i;
+ }
+ }
+
+ return i;
+}
+
+static int cgltf_parse_json_buffer_views(cgltf_options* options, jsmntok_t const* tokens, int i, const uint8_t* json_chunk, cgltf_data* out_data)
+{
+ i = cgltf_parse_json_array(options, tokens, i, json_chunk, sizeof(cgltf_buffer_view), (void**)&out_data->buffer_views, &out_data->buffer_views_count);
+ if (i < 0)
+ {
+ return i;
+ }
+
+ for (cgltf_size j = 0; j < out_data->buffer_views_count; ++j)
+ {
+ i = cgltf_parse_json_buffer_view(options, tokens, i, json_chunk, &out_data->buffer_views[j]);
+ if (i < 0)
+ {
+ return i;
+ }
+ }
+ return i;
+}
+
+static int cgltf_parse_json_buffer(cgltf_options* options, jsmntok_t const* tokens, int i, const uint8_t* json_chunk, cgltf_buffer* out_buffer)
+{
+ CGLTF_CHECK_TOKTYPE(tokens[i], JSMN_OBJECT);
+
+ int size = tokens[i].size;
+ ++i;
+
+ for (int j = 0; j < size; ++j)
+ {
+ CGLTF_CHECK_KEY(tokens[i]);
+
+ if (cgltf_json_strcmp(tokens + i, json_chunk, "name") == 0)
+ {
+ i = cgltf_parse_json_string(options, tokens, i + 1, json_chunk, &out_buffer->name);
+ }
+ else if (cgltf_json_strcmp(tokens+i, json_chunk, "byteLength") == 0)
+ {
+ ++i;
+ out_buffer->size =
+ cgltf_json_to_size(tokens+i, json_chunk);
+ ++i;
+ }
+ else if (cgltf_json_strcmp(tokens+i, json_chunk, "uri") == 0)
+ {
+ i = cgltf_parse_json_string(options, tokens, i + 1, json_chunk, &out_buffer->uri);
+ }
+ else if (cgltf_json_strcmp(tokens + i, json_chunk, "extras") == 0)
+ {
+ i = cgltf_parse_json_extras(options, tokens, i + 1, json_chunk, &out_buffer->extras);
+ }
+ else if (cgltf_json_strcmp(tokens + i, json_chunk, "extensions") == 0)
+ {
+ i = cgltf_parse_json_unprocessed_extensions(options, tokens, i, json_chunk, &out_buffer->extensions_count, &out_buffer->extensions);
+ }
+ else
+ {
+ i = cgltf_skip_json(tokens, i+1);
+ }
+
+ if (i < 0)
+ {
+ return i;
+ }
+ }
+
+ return i;
+}
+
+static int cgltf_parse_json_buffers(cgltf_options* options, jsmntok_t const* tokens, int i, const uint8_t* json_chunk, cgltf_data* out_data)
+{
+ i = cgltf_parse_json_array(options, tokens, i, json_chunk, sizeof(cgltf_buffer), (void**)&out_data->buffers, &out_data->buffers_count);
+ if (i < 0)
+ {
+ return i;
+ }
+
+ for (cgltf_size j = 0; j < out_data->buffers_count; ++j)
+ {
+ i = cgltf_parse_json_buffer(options, tokens, i, json_chunk, &out_data->buffers[j]);
+ if (i < 0)
+ {
+ return i;
+ }
+ }
+ return i;
+}
+
+static int cgltf_parse_json_skin(cgltf_options* options, jsmntok_t const* tokens, int i, const uint8_t* json_chunk, cgltf_skin* out_skin)
+{
+ CGLTF_CHECK_TOKTYPE(tokens[i], JSMN_OBJECT);
+
+ int size = tokens[i].size;
+ ++i;
+
+ for (int j = 0; j < size; ++j)
+ {
+ CGLTF_CHECK_KEY(tokens[i]);
+
+ if (cgltf_json_strcmp(tokens+i, json_chunk, "name") == 0)
+ {
+ i = cgltf_parse_json_string(options, tokens, i + 1, json_chunk, &out_skin->name);
+ }
+ else if (cgltf_json_strcmp(tokens+i, json_chunk, "joints") == 0)
+ {
+ i = cgltf_parse_json_array(options, tokens, i + 1, json_chunk, sizeof(cgltf_node*), (void**)&out_skin->joints, &out_skin->joints_count);
+ if (i < 0)
+ {
+ return i;
+ }
+
+ for (cgltf_size k = 0; k < out_skin->joints_count; ++k)
+ {
+ out_skin->joints[k] = CGLTF_PTRINDEX(cgltf_node, cgltf_json_to_int(tokens + i, json_chunk));
+ ++i;
+ }
+ }
+ else if (cgltf_json_strcmp(tokens+i, json_chunk, "skeleton") == 0)
+ {
+ ++i;
+ CGLTF_CHECK_TOKTYPE(tokens[i], JSMN_PRIMITIVE);
+ out_skin->skeleton = CGLTF_PTRINDEX(cgltf_node, cgltf_json_to_int(tokens + i, json_chunk));
+ ++i;
+ }
+ else if (cgltf_json_strcmp(tokens+i, json_chunk, "inverseBindMatrices") == 0)
+ {
+ ++i;
+ CGLTF_CHECK_TOKTYPE(tokens[i], JSMN_PRIMITIVE);
+ out_skin->inverse_bind_matrices = CGLTF_PTRINDEX(cgltf_accessor, cgltf_json_to_int(tokens + i, json_chunk));
+ ++i;
+ }
+ else if (cgltf_json_strcmp(tokens + i, json_chunk, "extras") == 0)
+ {
+ i = cgltf_parse_json_extras(options, tokens, i + 1, json_chunk, &out_skin->extras);
+ }
+ else if (cgltf_json_strcmp(tokens + i, json_chunk, "extensions") == 0)
+ {
+ i = cgltf_parse_json_unprocessed_extensions(options, tokens, i, json_chunk, &out_skin->extensions_count, &out_skin->extensions);
+ }
+ else
+ {
+ i = cgltf_skip_json(tokens, i+1);
+ }
+
+ if (i < 0)
+ {
+ return i;
+ }
+ }
+
+ return i;
+}
+
+static int cgltf_parse_json_skins(cgltf_options* options, jsmntok_t const* tokens, int i, const uint8_t* json_chunk, cgltf_data* out_data)
+{
+ i = cgltf_parse_json_array(options, tokens, i, json_chunk, sizeof(cgltf_skin), (void**)&out_data->skins, &out_data->skins_count);
+ if (i < 0)
+ {
+ return i;
+ }
+
+ for (cgltf_size j = 0; j < out_data->skins_count; ++j)
+ {
+ i = cgltf_parse_json_skin(options, tokens, i, json_chunk, &out_data->skins[j]);
+ if (i < 0)
+ {
+ return i;
+ }
+ }
+ return i;
+}
+
+static int cgltf_parse_json_camera(cgltf_options* options, jsmntok_t const* tokens, int i, const uint8_t* json_chunk, cgltf_camera* out_camera)
+{
+ CGLTF_CHECK_TOKTYPE(tokens[i], JSMN_OBJECT);
+
+ int size = tokens[i].size;
+ ++i;
+
+ for (int j = 0; j < size; ++j)
+ {
+ CGLTF_CHECK_KEY(tokens[i]);
+
+ if (cgltf_json_strcmp(tokens+i, json_chunk, "name") == 0)
+ {
+ i = cgltf_parse_json_string(options, tokens, i + 1, json_chunk, &out_camera->name);
+ }
+ else if (cgltf_json_strcmp(tokens+i, json_chunk, "perspective") == 0)
+ {
+ ++i;
+
+ CGLTF_CHECK_TOKTYPE(tokens[i], JSMN_OBJECT);
+
+ int data_size = tokens[i].size;
+ ++i;
+
+ if (out_camera->type != cgltf_camera_type_invalid)
+ {
+ return CGLTF_ERROR_JSON;
+ }
+
+ out_camera->type = cgltf_camera_type_perspective;
+
+ for (int k = 0; k < data_size; ++k)
+ {
+ CGLTF_CHECK_KEY(tokens[i]);
+
+ if (cgltf_json_strcmp(tokens+i, json_chunk, "aspectRatio") == 0)
+ {
+ ++i;
+ out_camera->data.perspective.has_aspect_ratio = 1;
+ out_camera->data.perspective.aspect_ratio = cgltf_json_to_float(tokens + i, json_chunk);
+ ++i;
+ }
+ else if (cgltf_json_strcmp(tokens+i, json_chunk, "yfov") == 0)
+ {
+ ++i;
+ out_camera->data.perspective.yfov = cgltf_json_to_float(tokens + i, json_chunk);
+ ++i;
+ }
+ else if (cgltf_json_strcmp(tokens+i, json_chunk, "zfar") == 0)
+ {
+ ++i;
+ out_camera->data.perspective.has_zfar = 1;
+ out_camera->data.perspective.zfar = cgltf_json_to_float(tokens + i, json_chunk);
+ ++i;
+ }
+ else if (cgltf_json_strcmp(tokens+i, json_chunk, "znear") == 0)
+ {
+ ++i;
+ out_camera->data.perspective.znear = cgltf_json_to_float(tokens + i, json_chunk);
+ ++i;
+ }
+ else if (cgltf_json_strcmp(tokens + i, json_chunk, "extras") == 0)
+ {
+ i = cgltf_parse_json_extras(options, tokens, i + 1, json_chunk, &out_camera->data.perspective.extras);
+ }
+ else
+ {
+ i = cgltf_skip_json(tokens, i+1);
+ }
+
+ if (i < 0)
+ {
+ return i;
+ }
+ }
+ }
+ else if (cgltf_json_strcmp(tokens+i, json_chunk, "orthographic") == 0)
+ {
+ ++i;
+
+ CGLTF_CHECK_TOKTYPE(tokens[i], JSMN_OBJECT);
+
+ int data_size = tokens[i].size;
+ ++i;
+
+ if (out_camera->type != cgltf_camera_type_invalid)
+ {
+ return CGLTF_ERROR_JSON;
+ }
+
+ out_camera->type = cgltf_camera_type_orthographic;
+
+ for (int k = 0; k < data_size; ++k)
+ {
+ CGLTF_CHECK_KEY(tokens[i]);
+
+ if (cgltf_json_strcmp(tokens+i, json_chunk, "xmag") == 0)
+ {
+ ++i;
+ out_camera->data.orthographic.xmag = cgltf_json_to_float(tokens + i, json_chunk);
+ ++i;
+ }
+ else if (cgltf_json_strcmp(tokens+i, json_chunk, "ymag") == 0)
+ {
+ ++i;
+ out_camera->data.orthographic.ymag = cgltf_json_to_float(tokens + i, json_chunk);
+ ++i;
+ }
+ else if (cgltf_json_strcmp(tokens+i, json_chunk, "zfar") == 0)
+ {
+ ++i;
+ out_camera->data.orthographic.zfar = cgltf_json_to_float(tokens + i, json_chunk);
+ ++i;
+ }
+ else if (cgltf_json_strcmp(tokens+i, json_chunk, "znear") == 0)
+ {
+ ++i;
+ out_camera->data.orthographic.znear = cgltf_json_to_float(tokens + i, json_chunk);
+ ++i;
+ }
+ else if (cgltf_json_strcmp(tokens + i, json_chunk, "extras") == 0)
+ {
+ i = cgltf_parse_json_extras(options, tokens, i + 1, json_chunk, &out_camera->data.orthographic.extras);
+ }
+ else
+ {
+ i = cgltf_skip_json(tokens, i+1);
+ }
+
+ if (i < 0)
+ {
+ return i;
+ }
+ }
+ }
+ else if (cgltf_json_strcmp(tokens + i, json_chunk, "extras") == 0)
+ {
+ i = cgltf_parse_json_extras(options, tokens, i + 1, json_chunk, &out_camera->extras);
+ }
+ else if (cgltf_json_strcmp(tokens + i, json_chunk, "extensions") == 0)
+ {
+ i = cgltf_parse_json_unprocessed_extensions(options, tokens, i, json_chunk, &out_camera->extensions_count, &out_camera->extensions);
+ }
+ else
+ {
+ i = cgltf_skip_json(tokens, i+1);
+ }
+
+ if (i < 0)
+ {
+ return i;
+ }
+ }
+
+ return i;
+}
+
+static int cgltf_parse_json_cameras(cgltf_options* options, jsmntok_t const* tokens, int i, const uint8_t* json_chunk, cgltf_data* out_data)
+{
+ i = cgltf_parse_json_array(options, tokens, i, json_chunk, sizeof(cgltf_camera), (void**)&out_data->cameras, &out_data->cameras_count);
+ if (i < 0)
+ {
+ return i;
+ }
+
+ for (cgltf_size j = 0; j < out_data->cameras_count; ++j)
+ {
+ i = cgltf_parse_json_camera(options, tokens, i, json_chunk, &out_data->cameras[j]);
+ if (i < 0)
+ {
+ return i;
+ }
+ }
+ return i;
+}
+
+static int cgltf_parse_json_light(cgltf_options* options, jsmntok_t const* tokens, int i, const uint8_t* json_chunk, cgltf_light* out_light)
+{
+ CGLTF_CHECK_TOKTYPE(tokens[i], JSMN_OBJECT);
+
+ out_light->color[0] = 1.f;
+ out_light->color[1] = 1.f;
+ out_light->color[2] = 1.f;
+ out_light->intensity = 1.f;
+
+ out_light->spot_inner_cone_angle = 0.f;
+ out_light->spot_outer_cone_angle = 3.1415926535f / 4.0f;
+
+ int size = tokens[i].size;
+ ++i;
+
+ for (int j = 0; j < size; ++j)
+ {
+ CGLTF_CHECK_KEY(tokens[i]);
+
+ if (cgltf_json_strcmp(tokens+i, json_chunk, "name") == 0)
+ {
+ i = cgltf_parse_json_string(options, tokens, i + 1, json_chunk, &out_light->name);
+ }
+ else if (cgltf_json_strcmp(tokens + i, json_chunk, "color") == 0)
+ {
+ i = cgltf_parse_json_float_array(tokens, i + 1, json_chunk, out_light->color, 3);
+ }
+ else if (cgltf_json_strcmp(tokens + i, json_chunk, "intensity") == 0)
+ {
+ ++i;
+ out_light->intensity = cgltf_json_to_float(tokens + i, json_chunk);
+ ++i;
+ }
+ else if (cgltf_json_strcmp(tokens+i, json_chunk, "type") == 0)
+ {
+ ++i;
+ if (cgltf_json_strcmp(tokens + i, json_chunk, "directional") == 0)
+ {
+ out_light->type = cgltf_light_type_directional;
+ }
+ else if (cgltf_json_strcmp(tokens + i, json_chunk, "point") == 0)
+ {
+ out_light->type = cgltf_light_type_point;
+ }
+ else if (cgltf_json_strcmp(tokens + i, json_chunk, "spot") == 0)
+ {
+ out_light->type = cgltf_light_type_spot;
+ }
+ ++i;
+ }
+ else if (cgltf_json_strcmp(tokens + i, json_chunk, "range") == 0)
+ {
+ ++i;
+ out_light->range = cgltf_json_to_float(tokens + i, json_chunk);
+ ++i;
+ }
+ else if (cgltf_json_strcmp(tokens+i, json_chunk, "spot") == 0)
+ {
+ ++i;
+
+ CGLTF_CHECK_TOKTYPE(tokens[i], JSMN_OBJECT);
+
+ int data_size = tokens[i].size;
+ ++i;
+
+ for (int k = 0; k < data_size; ++k)
+ {
+ CGLTF_CHECK_KEY(tokens[i]);
+
+ if (cgltf_json_strcmp(tokens+i, json_chunk, "innerConeAngle") == 0)
+ {
+ ++i;
+ out_light->spot_inner_cone_angle = cgltf_json_to_float(tokens + i, json_chunk);
+ ++i;
+ }
+ else if (cgltf_json_strcmp(tokens+i, json_chunk, "outerConeAngle") == 0)
+ {
+ ++i;
+ out_light->spot_outer_cone_angle = cgltf_json_to_float(tokens + i, json_chunk);
+ ++i;
+ }
+ else
+ {
+ i = cgltf_skip_json(tokens, i+1);
+ }
+
+ if (i < 0)
+ {
+ return i;
+ }
+ }
+ }
+ else if (cgltf_json_strcmp(tokens + i, json_chunk, "extras") == 0)
+ {
+ i = cgltf_parse_json_extras(options, tokens, i + 1, json_chunk, &out_light->extras);
+ }
+ else
+ {
+ i = cgltf_skip_json(tokens, i+1);
+ }
+
+ if (i < 0)
+ {
+ return i;
+ }
+ }
+
+ return i;
+}
+
+static int cgltf_parse_json_lights(cgltf_options* options, jsmntok_t const* tokens, int i, const uint8_t* json_chunk, cgltf_data* out_data)
+{
+ i = cgltf_parse_json_array(options, tokens, i, json_chunk, sizeof(cgltf_light), (void**)&out_data->lights, &out_data->lights_count);
+ if (i < 0)
+ {
+ return i;
+ }
+
+ for (cgltf_size j = 0; j < out_data->lights_count; ++j)
+ {
+ i = cgltf_parse_json_light(options, tokens, i, json_chunk, &out_data->lights[j]);
+ if (i < 0)
+ {
+ return i;
+ }
+ }
+ return i;
+}
+
+static int cgltf_parse_json_node(cgltf_options* options, jsmntok_t const* tokens, int i, const uint8_t* json_chunk, cgltf_node* out_node)
+{
+ CGLTF_CHECK_TOKTYPE(tokens[i], JSMN_OBJECT);
+
+ out_node->rotation[3] = 1.0f;
+ out_node->scale[0] = 1.0f;
+ out_node->scale[1] = 1.0f;
+ out_node->scale[2] = 1.0f;
+ out_node->matrix[0] = 1.0f;
+ out_node->matrix[5] = 1.0f;
+ out_node->matrix[10] = 1.0f;
+ out_node->matrix[15] = 1.0f;
+
+ int size = tokens[i].size;
+ ++i;
+
+ for (int j = 0; j < size; ++j)
+ {
+ CGLTF_CHECK_KEY(tokens[i]);
+
+ if (cgltf_json_strcmp(tokens+i, json_chunk, "name") == 0)
+ {
+ i = cgltf_parse_json_string(options, tokens, i + 1, json_chunk, &out_node->name);
+ }
+ else if (cgltf_json_strcmp(tokens+i, json_chunk, "children") == 0)
+ {
+ i = cgltf_parse_json_array(options, tokens, i + 1, json_chunk, sizeof(cgltf_node*), (void**)&out_node->children, &out_node->children_count);
+ if (i < 0)
+ {
+ return i;
+ }
+
+ for (cgltf_size k = 0; k < out_node->children_count; ++k)
+ {
+ out_node->children[k] = CGLTF_PTRINDEX(cgltf_node, cgltf_json_to_int(tokens + i, json_chunk));
+ ++i;
+ }
+ }
+ else if (cgltf_json_strcmp(tokens+i, json_chunk, "mesh") == 0)
+ {
+ ++i;
+ CGLTF_CHECK_TOKTYPE(tokens[i], JSMN_PRIMITIVE);
+ out_node->mesh = CGLTF_PTRINDEX(cgltf_mesh, cgltf_json_to_int(tokens + i, json_chunk));
+ ++i;
+ }
+ else if (cgltf_json_strcmp(tokens+i, json_chunk, "skin") == 0)
+ {
+ ++i;
+ CGLTF_CHECK_TOKTYPE(tokens[i], JSMN_PRIMITIVE);
+ out_node->skin = CGLTF_PTRINDEX(cgltf_skin, cgltf_json_to_int(tokens + i, json_chunk));
+ ++i;
+ }
+ else if (cgltf_json_strcmp(tokens+i, json_chunk, "camera") == 0)
+ {
+ ++i;
+ CGLTF_CHECK_TOKTYPE(tokens[i], JSMN_PRIMITIVE);
+ out_node->camera = CGLTF_PTRINDEX(cgltf_camera, cgltf_json_to_int(tokens + i, json_chunk));
+ ++i;
+ }
+ else if (cgltf_json_strcmp(tokens+i, json_chunk, "translation") == 0)
+ {
+ out_node->has_translation = 1;
+ i = cgltf_parse_json_float_array(tokens, i + 1, json_chunk, out_node->translation, 3);
+ }
+ else if (cgltf_json_strcmp(tokens+i, json_chunk, "rotation") == 0)
+ {
+ out_node->has_rotation = 1;
+ i = cgltf_parse_json_float_array(tokens, i + 1, json_chunk, out_node->rotation, 4);
+ }
+ else if (cgltf_json_strcmp(tokens+i, json_chunk, "scale") == 0)
+ {
+ out_node->has_scale = 1;
+ i = cgltf_parse_json_float_array(tokens, i + 1, json_chunk, out_node->scale, 3);
+ }
+ else if (cgltf_json_strcmp(tokens+i, json_chunk, "matrix") == 0)
+ {
+ out_node->has_matrix = 1;
+ i = cgltf_parse_json_float_array(tokens, i + 1, json_chunk, out_node->matrix, 16);
+ }
+ else if (cgltf_json_strcmp(tokens + i, json_chunk, "weights") == 0)
+ {
+ i = cgltf_parse_json_array(options, tokens, i + 1, json_chunk, sizeof(cgltf_float), (void**)&out_node->weights, &out_node->weights_count);
+ if (i < 0)
+ {
+ return i;
+ }
+
+ i = cgltf_parse_json_float_array(tokens, i - 1, json_chunk, out_node->weights, (int)out_node->weights_count);
+ }
+ else if (cgltf_json_strcmp(tokens + i, json_chunk, "extras") == 0)
+ {
+ i = cgltf_parse_json_extras(options, tokens, i + 1, json_chunk, &out_node->extras);
+ }
+ else if (cgltf_json_strcmp(tokens + i, json_chunk, "extensions") == 0)
+ {
+ ++i;
+
+ CGLTF_CHECK_TOKTYPE(tokens[i], JSMN_OBJECT);
+ if(out_node->extensions)
+ {
+ return CGLTF_ERROR_JSON;
+ }
+
+ int extensions_size = tokens[i].size;
+ out_node->extensions_count= 0;
+ out_node->extensions = (cgltf_extension*)cgltf_calloc(options, sizeof(cgltf_extension), extensions_size);
+
+ if (!out_node->extensions)
+ {
+ return CGLTF_ERROR_NOMEM;
+ }
+
+ ++i;
+
+ for (int k = 0; k < extensions_size; ++k)
+ {
+ CGLTF_CHECK_KEY(tokens[i]);
+
+ if (cgltf_json_strcmp(tokens+i, json_chunk, "KHR_lights_punctual") == 0)
+ {
+ ++i;
+
+ CGLTF_CHECK_TOKTYPE(tokens[i], JSMN_OBJECT);
+
+ int data_size = tokens[i].size;
+ ++i;
+
+ for (int m = 0; m < data_size; ++m)
+ {
+ CGLTF_CHECK_KEY(tokens[i]);
+
+ if (cgltf_json_strcmp(tokens + i, json_chunk, "light") == 0)
+ {
+ ++i;
+ CGLTF_CHECK_TOKTYPE(tokens[i], JSMN_PRIMITIVE);
+ out_node->light = CGLTF_PTRINDEX(cgltf_light, cgltf_json_to_int(tokens + i, json_chunk));
+ ++i;
+ }
+ else
+ {
+ i = cgltf_skip_json(tokens, i + 1);
+ }
+
+ if (i < 0)
+ {
+ return i;
+ }
+ }
+ }
+ else if (cgltf_json_strcmp(tokens + i, json_chunk, "EXT_mesh_gpu_instancing") == 0)
+ {
+ out_node->has_mesh_gpu_instancing = 1;
+ i = cgltf_parse_json_mesh_gpu_instancing(options, tokens, i + 1, json_chunk, &out_node->mesh_gpu_instancing);
+ }
+ else
+ {
+ i = cgltf_parse_json_unprocessed_extension(options, tokens, i, json_chunk, &(out_node->extensions[out_node->extensions_count++]));
+ }
+
+ if (i < 0)
+ {
+ return i;
+ }
+ }
+ }
+ else
+ {
+ i = cgltf_skip_json(tokens, i+1);
+ }
+
+ if (i < 0)
+ {
+ return i;
+ }
+ }
+
+ return i;
+}
+
+static int cgltf_parse_json_nodes(cgltf_options* options, jsmntok_t const* tokens, int i, const uint8_t* json_chunk, cgltf_data* out_data)
+{
+ i = cgltf_parse_json_array(options, tokens, i, json_chunk, sizeof(cgltf_node), (void**)&out_data->nodes, &out_data->nodes_count);
+ if (i < 0)
+ {
+ return i;
+ }
+
+ for (cgltf_size j = 0; j < out_data->nodes_count; ++j)
+ {
+ i = cgltf_parse_json_node(options, tokens, i, json_chunk, &out_data->nodes[j]);
+ if (i < 0)
+ {
+ return i;
+ }
+ }
+ return i;
+}
+
+static int cgltf_parse_json_scene(cgltf_options* options, jsmntok_t const* tokens, int i, const uint8_t* json_chunk, cgltf_scene* out_scene)
+{
+ CGLTF_CHECK_TOKTYPE(tokens[i], JSMN_OBJECT);
+
+ int size = tokens[i].size;
+ ++i;
+
+ for (int j = 0; j < size; ++j)
+ {
+ CGLTF_CHECK_KEY(tokens[i]);
+
+ if (cgltf_json_strcmp(tokens+i, json_chunk, "name") == 0)
+ {
+ i = cgltf_parse_json_string(options, tokens, i + 1, json_chunk, &out_scene->name);
+ }
+ else if (cgltf_json_strcmp(tokens+i, json_chunk, "nodes") == 0)
+ {
+ i = cgltf_parse_json_array(options, tokens, i + 1, json_chunk, sizeof(cgltf_node*), (void**)&out_scene->nodes, &out_scene->nodes_count);
+ if (i < 0)
+ {
+ return i;
+ }
+
+ for (cgltf_size k = 0; k < out_scene->nodes_count; ++k)
+ {
+ out_scene->nodes[k] = CGLTF_PTRINDEX(cgltf_node, cgltf_json_to_int(tokens + i, json_chunk));
+ ++i;
+ }
+ }
+ else if (cgltf_json_strcmp(tokens + i, json_chunk, "extras") == 0)
+ {
+ i = cgltf_parse_json_extras(options, tokens, i + 1, json_chunk, &out_scene->extras);
+ }
+ else if (cgltf_json_strcmp(tokens + i, json_chunk, "extensions") == 0)
+ {
+ i = cgltf_parse_json_unprocessed_extensions(options, tokens, i, json_chunk, &out_scene->extensions_count, &out_scene->extensions);
+ }
+ else
+ {
+ i = cgltf_skip_json(tokens, i+1);
+ }
+
+ if (i < 0)
+ {
+ return i;
+ }
+ }
+
+ return i;
+}
+
+static int cgltf_parse_json_scenes(cgltf_options* options, jsmntok_t const* tokens, int i, const uint8_t* json_chunk, cgltf_data* out_data)
+{
+ i = cgltf_parse_json_array(options, tokens, i, json_chunk, sizeof(cgltf_scene), (void**)&out_data->scenes, &out_data->scenes_count);
+ if (i < 0)
+ {
+ return i;
+ }
+
+ for (cgltf_size j = 0; j < out_data->scenes_count; ++j)
+ {
+ i = cgltf_parse_json_scene(options, tokens, i, json_chunk, &out_data->scenes[j]);
+ if (i < 0)
+ {
+ return i;
+ }
+ }
+ return i;
+}
+
+static int cgltf_parse_json_animation_sampler(cgltf_options* options, jsmntok_t const* tokens, int i, const uint8_t* json_chunk, cgltf_animation_sampler* out_sampler)
+{
+ (void)options;
+ CGLTF_CHECK_TOKTYPE(tokens[i], JSMN_OBJECT);
+
+ int size = tokens[i].size;
+ ++i;
+
+ for (int j = 0; j < size; ++j)
+ {
+ CGLTF_CHECK_KEY(tokens[i]);
+
+ if (cgltf_json_strcmp(tokens+i, json_chunk, "input") == 0)
+ {
+ ++i;
+ out_sampler->input = CGLTF_PTRINDEX(cgltf_accessor, cgltf_json_to_int(tokens + i, json_chunk));
+ ++i;
+ }
+ else if (cgltf_json_strcmp(tokens+i, json_chunk, "output") == 0)
+ {
+ ++i;
+ out_sampler->output = CGLTF_PTRINDEX(cgltf_accessor, cgltf_json_to_int(tokens + i, json_chunk));
+ ++i;
+ }
+ else if (cgltf_json_strcmp(tokens+i, json_chunk, "interpolation") == 0)
+ {
+ ++i;
+ if (cgltf_json_strcmp(tokens + i, json_chunk, "LINEAR") == 0)
+ {
+ out_sampler->interpolation = cgltf_interpolation_type_linear;
+ }
+ else if (cgltf_json_strcmp(tokens + i, json_chunk, "STEP") == 0)
+ {
+ out_sampler->interpolation = cgltf_interpolation_type_step;
+ }
+ else if (cgltf_json_strcmp(tokens + i, json_chunk, "CUBICSPLINE") == 0)
+ {
+ out_sampler->interpolation = cgltf_interpolation_type_cubic_spline;
+ }
+ ++i;
+ }
+ else if (cgltf_json_strcmp(tokens + i, json_chunk, "extras") == 0)
+ {
+ i = cgltf_parse_json_extras(options, tokens, i + 1, json_chunk, &out_sampler->extras);
+ }
+ else if (cgltf_json_strcmp(tokens + i, json_chunk, "extensions") == 0)
+ {
+ i = cgltf_parse_json_unprocessed_extensions(options, tokens, i, json_chunk, &out_sampler->extensions_count, &out_sampler->extensions);
+ }
+ else
+ {
+ i = cgltf_skip_json(tokens, i+1);
+ }
+
+ if (i < 0)
+ {
+ return i;
+ }
+ }
+
+ return i;
+}
+
+static int cgltf_parse_json_animation_channel(cgltf_options* options, jsmntok_t const* tokens, int i, const uint8_t* json_chunk, cgltf_animation_channel* out_channel)
+{
+ (void)options;
+ CGLTF_CHECK_TOKTYPE(tokens[i], JSMN_OBJECT);
+
+ int size = tokens[i].size;
+ ++i;
+
+ for (int j = 0; j < size; ++j)
+ {
+ CGLTF_CHECK_KEY(tokens[i]);
+
+ if (cgltf_json_strcmp(tokens+i, json_chunk, "sampler") == 0)
+ {
+ ++i;
+ out_channel->sampler = CGLTF_PTRINDEX(cgltf_animation_sampler, cgltf_json_to_int(tokens + i, json_chunk));
+ ++i;
+ }
+ else if (cgltf_json_strcmp(tokens+i, json_chunk, "target") == 0)
+ {
+ ++i;
+
+ CGLTF_CHECK_TOKTYPE(tokens[i], JSMN_OBJECT);
+
+ int target_size = tokens[i].size;
+ ++i;
+
+ for (int k = 0; k < target_size; ++k)
+ {
+ CGLTF_CHECK_KEY(tokens[i]);
+
+ if (cgltf_json_strcmp(tokens+i, json_chunk, "node") == 0)
+ {
+ ++i;
+ out_channel->target_node = CGLTF_PTRINDEX(cgltf_node, cgltf_json_to_int(tokens + i, json_chunk));
+ ++i;
+ }
+ else if (cgltf_json_strcmp(tokens+i, json_chunk, "path") == 0)
+ {
+ ++i;
+ if (cgltf_json_strcmp(tokens+i, json_chunk, "translation") == 0)
+ {
+ out_channel->target_path = cgltf_animation_path_type_translation;
+ }
+ else if (cgltf_json_strcmp(tokens+i, json_chunk, "rotation") == 0)
+ {
+ out_channel->target_path = cgltf_animation_path_type_rotation;
+ }
+ else if (cgltf_json_strcmp(tokens+i, json_chunk, "scale") == 0)
+ {
+ out_channel->target_path = cgltf_animation_path_type_scale;
+ }
+ else if (cgltf_json_strcmp(tokens+i, json_chunk, "weights") == 0)
+ {
+ out_channel->target_path = cgltf_animation_path_type_weights;
+ }
+ ++i;
+ }
+ else if (cgltf_json_strcmp(tokens + i, json_chunk, "extras") == 0)
+ {
+ i = cgltf_parse_json_extras(options, tokens, i + 1, json_chunk, &out_channel->extras);
+ }
+ else if (cgltf_json_strcmp(tokens + i, json_chunk, "extensions") == 0)
+ {
+ i = cgltf_parse_json_unprocessed_extensions(options, tokens, i, json_chunk, &out_channel->extensions_count, &out_channel->extensions);
+ }
+ else
+ {
+ i = cgltf_skip_json(tokens, i+1);
+ }
+
+ if (i < 0)
+ {
+ return i;
+ }
+ }
+ }
+ else
+ {
+ i = cgltf_skip_json(tokens, i+1);
+ }
+
+ if (i < 0)
+ {
+ return i;
+ }
+ }
+
+ return i;
+}
+
+static int cgltf_parse_json_animation(cgltf_options* options, jsmntok_t const* tokens, int i, const uint8_t* json_chunk, cgltf_animation* out_animation)
+{
+ CGLTF_CHECK_TOKTYPE(tokens[i], JSMN_OBJECT);
+
+ int size = tokens[i].size;
+ ++i;
+
+ for (int j = 0; j < size; ++j)
+ {
+ CGLTF_CHECK_KEY(tokens[i]);
+
+ if (cgltf_json_strcmp(tokens+i, json_chunk, "name") == 0)
+ {
+ i = cgltf_parse_json_string(options, tokens, i + 1, json_chunk, &out_animation->name);
+ }
+ else if (cgltf_json_strcmp(tokens+i, json_chunk, "samplers") == 0)
+ {
+ i = cgltf_parse_json_array(options, tokens, i + 1, json_chunk, sizeof(cgltf_animation_sampler), (void**)&out_animation->samplers, &out_animation->samplers_count);
+ if (i < 0)
+ {
+ return i;
+ }
+
+ for (cgltf_size k = 0; k < out_animation->samplers_count; ++k)
+ {
+ i = cgltf_parse_json_animation_sampler(options, tokens, i, json_chunk, &out_animation->samplers[k]);
+ if (i < 0)
+ {
+ return i;
+ }
+ }
+ }
+ else if (cgltf_json_strcmp(tokens+i, json_chunk, "channels") == 0)
+ {
+ i = cgltf_parse_json_array(options, tokens, i + 1, json_chunk, sizeof(cgltf_animation_channel), (void**)&out_animation->channels, &out_animation->channels_count);
+ if (i < 0)
+ {
+ return i;
+ }
+
+ for (cgltf_size k = 0; k < out_animation->channels_count; ++k)
+ {
+ i = cgltf_parse_json_animation_channel(options, tokens, i, json_chunk, &out_animation->channels[k]);
+ if (i < 0)
+ {
+ return i;
+ }
+ }
+ }
+ else if (cgltf_json_strcmp(tokens + i, json_chunk, "extras") == 0)
+ {
+ i = cgltf_parse_json_extras(options, tokens, i + 1, json_chunk, &out_animation->extras);
+ }
+ else if (cgltf_json_strcmp(tokens + i, json_chunk, "extensions") == 0)
+ {
+ i = cgltf_parse_json_unprocessed_extensions(options, tokens, i, json_chunk, &out_animation->extensions_count, &out_animation->extensions);
+ }
+ else
+ {
+ i = cgltf_skip_json(tokens, i+1);
+ }
+
+ if (i < 0)
+ {
+ return i;
+ }
+ }
+
+ return i;
+}
+
+static int cgltf_parse_json_animations(cgltf_options* options, jsmntok_t const* tokens, int i, const uint8_t* json_chunk, cgltf_data* out_data)
+{
+ i = cgltf_parse_json_array(options, tokens, i, json_chunk, sizeof(cgltf_animation), (void**)&out_data->animations, &out_data->animations_count);
+ if (i < 0)
+ {
+ return i;
+ }
+
+ for (cgltf_size j = 0; j < out_data->animations_count; ++j)
+ {
+ i = cgltf_parse_json_animation(options, tokens, i, json_chunk, &out_data->animations[j]);
+ if (i < 0)
+ {
+ return i;
+ }
+ }
+ return i;
+}
+
+static int cgltf_parse_json_variant(cgltf_options* options, jsmntok_t const* tokens, int i, const uint8_t* json_chunk, cgltf_material_variant* out_variant)
+{
+ CGLTF_CHECK_TOKTYPE(tokens[i], JSMN_OBJECT);
+
+ int size = tokens[i].size;
+ ++i;
+
+ for (int j = 0; j < size; ++j)
+ {
+ CGLTF_CHECK_KEY(tokens[i]);
+
+ if (cgltf_json_strcmp(tokens+i, json_chunk, "name") == 0)
+ {
+ i = cgltf_parse_json_string(options, tokens, i + 1, json_chunk, &out_variant->name);
+ }
+ else if (cgltf_json_strcmp(tokens + i, json_chunk, "extras") == 0)
+ {
+ i = cgltf_parse_json_extras(options, tokens, i + 1, json_chunk, &out_variant->extras);
+ }
+ else
+ {
+ i = cgltf_skip_json(tokens, i+1);
+ }
+
+ if (i < 0)
+ {
+ return i;
+ }
+ }
+
+ return i;
+}
+
+static int cgltf_parse_json_variants(cgltf_options* options, jsmntok_t const* tokens, int i, const uint8_t* json_chunk, cgltf_data* out_data)
+{
+ i = cgltf_parse_json_array(options, tokens, i, json_chunk, sizeof(cgltf_material_variant), (void**)&out_data->variants, &out_data->variants_count);
+ if (i < 0)
+ {
+ return i;
+ }
+
+ for (cgltf_size j = 0; j < out_data->variants_count; ++j)
+ {
+ i = cgltf_parse_json_variant(options, tokens, i, json_chunk, &out_data->variants[j]);
+ if (i < 0)
+ {
+ return i;
+ }
+ }
+ return i;
+}
+
+static int cgltf_parse_json_asset(cgltf_options* options, jsmntok_t const* tokens, int i, const uint8_t* json_chunk, cgltf_asset* out_asset)
+{
+ CGLTF_CHECK_TOKTYPE(tokens[i], JSMN_OBJECT);
+
+ int size = tokens[i].size;
+ ++i;
+
+ for (int j = 0; j < size; ++j)
+ {
+ CGLTF_CHECK_KEY(tokens[i]);
+
+ if (cgltf_json_strcmp(tokens+i, json_chunk, "copyright") == 0)
+ {
+ i = cgltf_parse_json_string(options, tokens, i + 1, json_chunk, &out_asset->copyright);
+ }
+ else if (cgltf_json_strcmp(tokens+i, json_chunk, "generator") == 0)
+ {
+ i = cgltf_parse_json_string(options, tokens, i + 1, json_chunk, &out_asset->generator);
+ }
+ else if (cgltf_json_strcmp(tokens+i, json_chunk, "version") == 0)
+ {
+ i = cgltf_parse_json_string(options, tokens, i + 1, json_chunk, &out_asset->version);
+ }
+ else if (cgltf_json_strcmp(tokens+i, json_chunk, "minVersion") == 0)
+ {
+ i = cgltf_parse_json_string(options, tokens, i + 1, json_chunk, &out_asset->min_version);
+ }
+ else if (cgltf_json_strcmp(tokens + i, json_chunk, "extras") == 0)
+ {
+ i = cgltf_parse_json_extras(options, tokens, i + 1, json_chunk, &out_asset->extras);
+ }
+ else if (cgltf_json_strcmp(tokens + i, json_chunk, "extensions") == 0)
+ {
+ i = cgltf_parse_json_unprocessed_extensions(options, tokens, i, json_chunk, &out_asset->extensions_count, &out_asset->extensions);
+ }
+ else
+ {
+ i = cgltf_skip_json(tokens, i+1);
+ }
+
+ if (i < 0)
+ {
+ return i;
+ }
+ }
+
+ if (out_asset->version && CGLTF_ATOF(out_asset->version) < 2)
+ {
+ return CGLTF_ERROR_LEGACY;
+ }
+
+ return i;
+}
+
+cgltf_size cgltf_num_components(cgltf_type type) {
+ switch (type)
+ {
+ case cgltf_type_vec2:
+ return 2;
+ case cgltf_type_vec3:
+ return 3;
+ case cgltf_type_vec4:
+ return 4;
+ case cgltf_type_mat2:
+ return 4;
+ case cgltf_type_mat3:
+ return 9;
+ case cgltf_type_mat4:
+ return 16;
+ case cgltf_type_invalid:
+ case cgltf_type_scalar:
+ default:
+ return 1;
+ }
+}
+
+cgltf_size cgltf_component_size(cgltf_component_type component_type) {
+ switch (component_type)
+ {
+ case cgltf_component_type_r_8:
+ case cgltf_component_type_r_8u:
+ return 1;
+ case cgltf_component_type_r_16:
+ case cgltf_component_type_r_16u:
+ return 2;
+ case cgltf_component_type_r_32u:
+ case cgltf_component_type_r_32f:
+ return 4;
+ case cgltf_component_type_invalid:
+ default:
+ return 0;
+ }
+}
+
+cgltf_size cgltf_calc_size(cgltf_type type, cgltf_component_type component_type)
+{
+ cgltf_size component_size = cgltf_component_size(component_type);
+ if (type == cgltf_type_mat2 && component_size == 1)
+ {
+ return 8 * component_size;
+ }
+ else if (type == cgltf_type_mat3 && (component_size == 1 || component_size == 2))
+ {
+ return 12 * component_size;
+ }
+ return component_size * cgltf_num_components(type);
+}
+
+static int cgltf_fixup_pointers(cgltf_data* out_data);
+
+static int cgltf_parse_json_root(cgltf_options* options, jsmntok_t const* tokens, int i, const uint8_t* json_chunk, cgltf_data* out_data)
+{
+ CGLTF_CHECK_TOKTYPE(tokens[i], JSMN_OBJECT);
+
+ int size = tokens[i].size;
+ ++i;
+
+ for (int j = 0; j < size; ++j)
+ {
+ CGLTF_CHECK_KEY(tokens[i]);
+
+ if (cgltf_json_strcmp(tokens + i, json_chunk, "asset") == 0)
+ {
+ i = cgltf_parse_json_asset(options, tokens, i + 1, json_chunk, &out_data->asset);
+ }
+ else if (cgltf_json_strcmp(tokens + i, json_chunk, "meshes") == 0)
+ {
+ i = cgltf_parse_json_meshes(options, tokens, i + 1, json_chunk, out_data);
+ }
+ else if (cgltf_json_strcmp(tokens + i, json_chunk, "accessors") == 0)
+ {
+ i = cgltf_parse_json_accessors(options, tokens, i + 1, json_chunk, out_data);
+ }
+ else if (cgltf_json_strcmp(tokens + i, json_chunk, "bufferViews") == 0)
+ {
+ i = cgltf_parse_json_buffer_views(options, tokens, i + 1, json_chunk, out_data);
+ }
+ else if (cgltf_json_strcmp(tokens + i, json_chunk, "buffers") == 0)
+ {
+ i = cgltf_parse_json_buffers(options, tokens, i + 1, json_chunk, out_data);
+ }
+ else if (cgltf_json_strcmp(tokens + i, json_chunk, "materials") == 0)
+ {
+ i = cgltf_parse_json_materials(options, tokens, i + 1, json_chunk, out_data);
+ }
+ else if (cgltf_json_strcmp(tokens + i, json_chunk, "images") == 0)
+ {
+ i = cgltf_parse_json_images(options, tokens, i + 1, json_chunk, out_data);
+ }
+ else if (cgltf_json_strcmp(tokens + i, json_chunk, "textures") == 0)
+ {
+ i = cgltf_parse_json_textures(options, tokens, i + 1, json_chunk, out_data);
+ }
+ else if (cgltf_json_strcmp(tokens + i, json_chunk, "samplers") == 0)
+ {
+ i = cgltf_parse_json_samplers(options, tokens, i + 1, json_chunk, out_data);
+ }
+ else if (cgltf_json_strcmp(tokens + i, json_chunk, "skins") == 0)
+ {
+ i = cgltf_parse_json_skins(options, tokens, i + 1, json_chunk, out_data);
+ }
+ else if (cgltf_json_strcmp(tokens + i, json_chunk, "cameras") == 0)
+ {
+ i = cgltf_parse_json_cameras(options, tokens, i + 1, json_chunk, out_data);
+ }
+ else if (cgltf_json_strcmp(tokens + i, json_chunk, "nodes") == 0)
+ {
+ i = cgltf_parse_json_nodes(options, tokens, i + 1, json_chunk, out_data);
+ }
+ else if (cgltf_json_strcmp(tokens + i, json_chunk, "scenes") == 0)
+ {
+ i = cgltf_parse_json_scenes(options, tokens, i + 1, json_chunk, out_data);
+ }
+ else if (cgltf_json_strcmp(tokens + i, json_chunk, "scene") == 0)
+ {
+ ++i;
+ out_data->scene = CGLTF_PTRINDEX(cgltf_scene, cgltf_json_to_int(tokens + i, json_chunk));
+ ++i;
+ }
+ else if (cgltf_json_strcmp(tokens + i, json_chunk, "animations") == 0)
+ {
+ i = cgltf_parse_json_animations(options, tokens, i + 1, json_chunk, out_data);
+ }
+ else if (cgltf_json_strcmp(tokens+i, json_chunk, "extras") == 0)
+ {
+ i = cgltf_parse_json_extras(options, tokens, i + 1, json_chunk, &out_data->extras);
+ }
+ else if (cgltf_json_strcmp(tokens + i, json_chunk, "extensions") == 0)
+ {
+ ++i;
+
+ CGLTF_CHECK_TOKTYPE(tokens[i], JSMN_OBJECT);
+ if(out_data->data_extensions)
+ {
+ return CGLTF_ERROR_JSON;
+ }
+
+ int extensions_size = tokens[i].size;
+ out_data->data_extensions_count = 0;
+ out_data->data_extensions = (cgltf_extension*)cgltf_calloc(options, sizeof(cgltf_extension), extensions_size);
+
+ if (!out_data->data_extensions)
+ {
+ return CGLTF_ERROR_NOMEM;
+ }
+
+ ++i;
+
+ for (int k = 0; k < extensions_size; ++k)
+ {
+ CGLTF_CHECK_KEY(tokens[i]);
+
+ if (cgltf_json_strcmp(tokens+i, json_chunk, "KHR_lights_punctual") == 0)
+ {
+ ++i;
+
+ CGLTF_CHECK_TOKTYPE(tokens[i], JSMN_OBJECT);
+
+ int data_size = tokens[i].size;
+ ++i;
+
+ for (int m = 0; m < data_size; ++m)
+ {
+ CGLTF_CHECK_KEY(tokens[i]);
+
+ if (cgltf_json_strcmp(tokens + i, json_chunk, "lights") == 0)
+ {
+ i = cgltf_parse_json_lights(options, tokens, i + 1, json_chunk, out_data);
+ }
+ else
+ {
+ i = cgltf_skip_json(tokens, i + 1);
+ }
+
+ if (i < 0)
+ {
+ return i;
+ }
+ }
+ }
+ else if (cgltf_json_strcmp(tokens+i, json_chunk, "KHR_materials_variants") == 0)
+ {
+ ++i;
+
+ CGLTF_CHECK_TOKTYPE(tokens[i], JSMN_OBJECT);
+
+ int data_size = tokens[i].size;
+ ++i;
+
+ for (int m = 0; m < data_size; ++m)
+ {
+ CGLTF_CHECK_KEY(tokens[i]);
+
+ if (cgltf_json_strcmp(tokens + i, json_chunk, "variants") == 0)
+ {
+ i = cgltf_parse_json_variants(options, tokens, i + 1, json_chunk, out_data);
+ }
+ else
+ {
+ i = cgltf_skip_json(tokens, i + 1);
+ }
+
+ if (i < 0)
+ {
+ return i;
+ }
+ }
+ }
+ else
+ {
+ i = cgltf_parse_json_unprocessed_extension(options, tokens, i, json_chunk, &(out_data->data_extensions[out_data->data_extensions_count++]));
+ }
+
+ if (i < 0)
+ {
+ return i;
+ }
+ }
+ }
+ else if (cgltf_json_strcmp(tokens + i, json_chunk, "extensionsUsed") == 0)
+ {
+ i = cgltf_parse_json_string_array(options, tokens, i + 1, json_chunk, &out_data->extensions_used, &out_data->extensions_used_count);
+ }
+ else if (cgltf_json_strcmp(tokens + i, json_chunk, "extensionsRequired") == 0)
+ {
+ i = cgltf_parse_json_string_array(options, tokens, i + 1, json_chunk, &out_data->extensions_required, &out_data->extensions_required_count);
+ }
+ else
+ {
+ i = cgltf_skip_json(tokens, i + 1);
+ }
+
+ if (i < 0)
+ {
+ return i;
+ }
+ }
+
+ return i;
+}
+
+cgltf_result cgltf_parse_json(cgltf_options* options, const uint8_t* json_chunk, cgltf_size size, cgltf_data** out_data)
+{
+ jsmn_parser parser = { 0, 0, 0 };
+
+ if (options->json_token_count == 0)
+ {
+ int token_count = jsmn_parse(&parser, (const char*)json_chunk, size, NULL, 0);
+
+ if (token_count <= 0)
+ {
+ return cgltf_result_invalid_json;
+ }
+
+ options->json_token_count = token_count;
+ }
+
+ jsmntok_t* tokens = (jsmntok_t*)options->memory.alloc_func(options->memory.user_data, sizeof(jsmntok_t) * (options->json_token_count + 1));
+
+ if (!tokens)
+ {
+ return cgltf_result_out_of_memory;
+ }
+
+ jsmn_init(&parser);
+
+ int token_count = jsmn_parse(&parser, (const char*)json_chunk, size, tokens, options->json_token_count);
+
+ if (token_count <= 0)
+ {
+ options->memory.free_func(options->memory.user_data, tokens);
+ return cgltf_result_invalid_json;
+ }
+
+ // this makes sure that we always have an UNDEFINED token at the end of the stream
+ // for invalid JSON inputs this makes sure we don't perform out of bound reads of token data
+ tokens[token_count].type = JSMN_UNDEFINED;
+
+ cgltf_data* data = (cgltf_data*)options->memory.alloc_func(options->memory.user_data, sizeof(cgltf_data));
+
+ if (!data)
+ {
+ options->memory.free_func(options->memory.user_data, tokens);
+ return cgltf_result_out_of_memory;
+ }
+
+ memset(data, 0, sizeof(cgltf_data));
+ data->memory = options->memory;
+ data->file = options->file;
+
+ int i = cgltf_parse_json_root(options, tokens, 0, json_chunk, data);
+
+ options->memory.free_func(options->memory.user_data, tokens);
+
+ if (i < 0)
+ {
+ cgltf_free(data);
+
+ switch (i)
+ {
+ case CGLTF_ERROR_NOMEM: return cgltf_result_out_of_memory;
+ case CGLTF_ERROR_LEGACY: return cgltf_result_legacy_gltf;
+ default: return cgltf_result_invalid_gltf;
+ }
+ }
+
+ if (cgltf_fixup_pointers(data) < 0)
+ {
+ cgltf_free(data);
+ return cgltf_result_invalid_gltf;
+ }
+
+ data->json = (const char*)json_chunk;
+ data->json_size = size;
+
+ *out_data = data;
+
+ return cgltf_result_success;
+}
+
+static int cgltf_fixup_pointers(cgltf_data* data)
+{
+ for (cgltf_size i = 0; i < data->meshes_count; ++i)
+ {
+ for (cgltf_size j = 0; j < data->meshes[i].primitives_count; ++j)
+ {
+ CGLTF_PTRFIXUP(data->meshes[i].primitives[j].indices, data->accessors, data->accessors_count);
+ CGLTF_PTRFIXUP(data->meshes[i].primitives[j].material, data->materials, data->materials_count);
+
+ for (cgltf_size k = 0; k < data->meshes[i].primitives[j].attributes_count; ++k)
+ {
+ CGLTF_PTRFIXUP_REQ(data->meshes[i].primitives[j].attributes[k].data, data->accessors, data->accessors_count);
+ }
+
+ for (cgltf_size k = 0; k < data->meshes[i].primitives[j].targets_count; ++k)
+ {
+ for (cgltf_size m = 0; m < data->meshes[i].primitives[j].targets[k].attributes_count; ++m)
+ {
+ CGLTF_PTRFIXUP_REQ(data->meshes[i].primitives[j].targets[k].attributes[m].data, data->accessors, data->accessors_count);
+ }
+ }
+
+ if (data->meshes[i].primitives[j].has_draco_mesh_compression)
+ {
+ CGLTF_PTRFIXUP_REQ(data->meshes[i].primitives[j].draco_mesh_compression.buffer_view, data->buffer_views, data->buffer_views_count);
+ for (cgltf_size m = 0; m < data->meshes[i].primitives[j].draco_mesh_compression.attributes_count; ++m)
+ {
+ CGLTF_PTRFIXUP_REQ(data->meshes[i].primitives[j].draco_mesh_compression.attributes[m].data, data->accessors, data->accessors_count);
+ }
+ }
+
+ for (cgltf_size k = 0; k < data->meshes[i].primitives[j].mappings_count; ++k)
+ {
+ CGLTF_PTRFIXUP_REQ(data->meshes[i].primitives[j].mappings[k].material, data->materials, data->materials_count);
+ }
+ }
+ }
+
+ for (cgltf_size i = 0; i < data->accessors_count; ++i)
+ {
+ CGLTF_PTRFIXUP(data->accessors[i].buffer_view, data->buffer_views, data->buffer_views_count);
+
+ if (data->accessors[i].is_sparse)
+ {
+ CGLTF_PTRFIXUP_REQ(data->accessors[i].sparse.indices_buffer_view, data->buffer_views, data->buffer_views_count);
+ CGLTF_PTRFIXUP_REQ(data->accessors[i].sparse.values_buffer_view, data->buffer_views, data->buffer_views_count);
+ }
+
+ if (data->accessors[i].buffer_view)
+ {
+ data->accessors[i].stride = data->accessors[i].buffer_view->stride;
+ }
+
+ if (data->accessors[i].stride == 0)
+ {
+ data->accessors[i].stride = cgltf_calc_size(data->accessors[i].type, data->accessors[i].component_type);
+ }
+ }
+
+ for (cgltf_size i = 0; i < data->textures_count; ++i)
+ {
+ CGLTF_PTRFIXUP(data->textures[i].image, data->images, data->images_count);
+ CGLTF_PTRFIXUP(data->textures[i].basisu_image, data->images, data->images_count);
+ CGLTF_PTRFIXUP(data->textures[i].webp_image, data->images, data->images_count);
+ CGLTF_PTRFIXUP(data->textures[i].sampler, data->samplers, data->samplers_count);
+ }
+
+ for (cgltf_size i = 0; i < data->images_count; ++i)
+ {
+ CGLTF_PTRFIXUP(data->images[i].buffer_view, data->buffer_views, data->buffer_views_count);
+ }
+
+ for (cgltf_size i = 0; i < data->materials_count; ++i)
+ {
+ CGLTF_PTRFIXUP(data->materials[i].normal_texture.texture, data->textures, data->textures_count);
+ CGLTF_PTRFIXUP(data->materials[i].emissive_texture.texture, data->textures, data->textures_count);
+ CGLTF_PTRFIXUP(data->materials[i].occlusion_texture.texture, data->textures, data->textures_count);
+
+ CGLTF_PTRFIXUP(data->materials[i].pbr_metallic_roughness.base_color_texture.texture, data->textures, data->textures_count);
+ CGLTF_PTRFIXUP(data->materials[i].pbr_metallic_roughness.metallic_roughness_texture.texture, data->textures, data->textures_count);
+
+ CGLTF_PTRFIXUP(data->materials[i].pbr_specular_glossiness.diffuse_texture.texture, data->textures, data->textures_count);
+ CGLTF_PTRFIXUP(data->materials[i].pbr_specular_glossiness.specular_glossiness_texture.texture, data->textures, data->textures_count);
+
+ CGLTF_PTRFIXUP(data->materials[i].clearcoat.clearcoat_texture.texture, data->textures, data->textures_count);
+ CGLTF_PTRFIXUP(data->materials[i].clearcoat.clearcoat_roughness_texture.texture, data->textures, data->textures_count);
+ CGLTF_PTRFIXUP(data->materials[i].clearcoat.clearcoat_normal_texture.texture, data->textures, data->textures_count);
+
+ CGLTF_PTRFIXUP(data->materials[i].specular.specular_texture.texture, data->textures, data->textures_count);
+ CGLTF_PTRFIXUP(data->materials[i].specular.specular_color_texture.texture, data->textures, data->textures_count);
+
+ CGLTF_PTRFIXUP(data->materials[i].transmission.transmission_texture.texture, data->textures, data->textures_count);
+
+ CGLTF_PTRFIXUP(data->materials[i].volume.thickness_texture.texture, data->textures, data->textures_count);
+
+ CGLTF_PTRFIXUP(data->materials[i].sheen.sheen_color_texture.texture, data->textures, data->textures_count);
+ CGLTF_PTRFIXUP(data->materials[i].sheen.sheen_roughness_texture.texture, data->textures, data->textures_count);
+
+ CGLTF_PTRFIXUP(data->materials[i].iridescence.iridescence_texture.texture, data->textures, data->textures_count);
+ CGLTF_PTRFIXUP(data->materials[i].iridescence.iridescence_thickness_texture.texture, data->textures, data->textures_count);
+
+ CGLTF_PTRFIXUP(data->materials[i].diffuse_transmission.diffuse_transmission_texture.texture, data->textures, data->textures_count);
+ CGLTF_PTRFIXUP(data->materials[i].diffuse_transmission.diffuse_transmission_color_texture.texture, data->textures, data->textures_count);
+
+ CGLTF_PTRFIXUP(data->materials[i].anisotropy.anisotropy_texture.texture, data->textures, data->textures_count);
+ }
+
+ for (cgltf_size i = 0; i < data->buffer_views_count; ++i)
+ {
+ CGLTF_PTRFIXUP_REQ(data->buffer_views[i].buffer, data->buffers, data->buffers_count);
+
+ if (data->buffer_views[i].has_meshopt_compression)
+ {
+ CGLTF_PTRFIXUP_REQ(data->buffer_views[i].meshopt_compression.buffer, data->buffers, data->buffers_count);
+ }
+ }
+
+ for (cgltf_size i = 0; i < data->skins_count; ++i)
+ {
+ for (cgltf_size j = 0; j < data->skins[i].joints_count; ++j)
+ {
+ CGLTF_PTRFIXUP_REQ(data->skins[i].joints[j], data->nodes, data->nodes_count);
+ }
+
+ CGLTF_PTRFIXUP(data->skins[i].skeleton, data->nodes, data->nodes_count);
+ CGLTF_PTRFIXUP(data->skins[i].inverse_bind_matrices, data->accessors, data->accessors_count);
+ }
+
+ for (cgltf_size i = 0; i < data->nodes_count; ++i)
+ {
+ for (cgltf_size j = 0; j < data->nodes[i].children_count; ++j)
+ {
+ CGLTF_PTRFIXUP_REQ(data->nodes[i].children[j], data->nodes, data->nodes_count);
+
+ if (data->nodes[i].children[j]->parent)
+ {
+ return CGLTF_ERROR_JSON;
+ }
+
+ data->nodes[i].children[j]->parent = &data->nodes[i];
+ }
+
+ CGLTF_PTRFIXUP(data->nodes[i].mesh, data->meshes, data->meshes_count);
+ CGLTF_PTRFIXUP(data->nodes[i].skin, data->skins, data->skins_count);
+ CGLTF_PTRFIXUP(data->nodes[i].camera, data->cameras, data->cameras_count);
+ CGLTF_PTRFIXUP(data->nodes[i].light, data->lights, data->lights_count);
+
+ if (data->nodes[i].has_mesh_gpu_instancing)
+ {
+ for (cgltf_size m = 0; m < data->nodes[i].mesh_gpu_instancing.attributes_count; ++m)
+ {
+ CGLTF_PTRFIXUP_REQ(data->nodes[i].mesh_gpu_instancing.attributes[m].data, data->accessors, data->accessors_count);
+ }
+ }
+ }
+
+ for (cgltf_size i = 0; i < data->scenes_count; ++i)
+ {
+ for (cgltf_size j = 0; j < data->scenes[i].nodes_count; ++j)
+ {
+ CGLTF_PTRFIXUP_REQ(data->scenes[i].nodes[j], data->nodes, data->nodes_count);
+
+ if (data->scenes[i].nodes[j]->parent)
+ {
+ return CGLTF_ERROR_JSON;
+ }
+ }
+ }
+
+ CGLTF_PTRFIXUP(data->scene, data->scenes, data->scenes_count);
+
+ for (cgltf_size i = 0; i < data->animations_count; ++i)
+ {
+ for (cgltf_size j = 0; j < data->animations[i].samplers_count; ++j)
+ {
+ CGLTF_PTRFIXUP_REQ(data->animations[i].samplers[j].input, data->accessors, data->accessors_count);
+ CGLTF_PTRFIXUP_REQ(data->animations[i].samplers[j].output, data->accessors, data->accessors_count);
+ }
+
+ for (cgltf_size j = 0; j < data->animations[i].channels_count; ++j)
+ {
+ CGLTF_PTRFIXUP_REQ(data->animations[i].channels[j].sampler, data->animations[i].samplers, data->animations[i].samplers_count);
+ CGLTF_PTRFIXUP(data->animations[i].channels[j].target_node, data->nodes, data->nodes_count);
+ }
+ }
+
+ return 0;
+}
+
+/*
+ * -- jsmn.c start --
+ * Source: https://github.com/zserge/jsmn
+ * License: MIT
+ *
+ * Copyright (c) 2010 Serge A. Zaitsev
+
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+/**
+ * Allocates a fresh unused token from the token pull.
+ */
+static jsmntok_t *jsmn_alloc_token(jsmn_parser *parser,
+ jsmntok_t *tokens, size_t num_tokens) {
+ jsmntok_t *tok;
+ if (parser->toknext >= num_tokens) {
+ return NULL;
+ }
+ tok = &tokens[parser->toknext++];
+ tok->start = tok->end = -1;
+ tok->size = 0;
+#ifdef JSMN_PARENT_LINKS
+ tok->parent = -1;
+#endif
+ return tok;
+}
+
+/**
+ * Fills token type and boundaries.
+ */
+static void jsmn_fill_token(jsmntok_t *token, jsmntype_t type,
+ ptrdiff_t start, ptrdiff_t end) {
+ token->type = type;
+ token->start = start;
+ token->end = end;
+ token->size = 0;
+}
+
+/**
+ * Fills next available token with JSON primitive.
+ */
+static int jsmn_parse_primitive(jsmn_parser *parser, const char *js,
+ size_t len, jsmntok_t *tokens, size_t num_tokens) {
+ jsmntok_t *token;
+ ptrdiff_t start;
+
+ start = parser->pos;
+
+ for (; parser->pos < len && js[parser->pos] != '\0'; parser->pos++) {
+ switch (js[parser->pos]) {
+#ifndef JSMN_STRICT
+ /* In strict mode primitive must be followed by "," or "}" or "]" */
+ case ':':
+#endif
+ case '\t' : case '\r' : case '\n' : case ' ' :
+ case ',' : case ']' : case '}' :
+ goto found;
+ }
+ if (js[parser->pos] < 32 || js[parser->pos] >= 127) {
+ parser->pos = start;
+ return JSMN_ERROR_INVAL;
+ }
+ }
+#ifdef JSMN_STRICT
+ /* In strict mode primitive must be followed by a comma/object/array */
+ parser->pos = start;
+ return JSMN_ERROR_PART;
+#endif
+
+found:
+ if (tokens == NULL) {
+ parser->pos--;
+ return 0;
+ }
+ token = jsmn_alloc_token(parser, tokens, num_tokens);
+ if (token == NULL) {
+ parser->pos = start;
+ return JSMN_ERROR_NOMEM;
+ }
+ jsmn_fill_token(token, JSMN_PRIMITIVE, start, parser->pos);
+#ifdef JSMN_PARENT_LINKS
+ token->parent = parser->toksuper;
+#endif
+ parser->pos--;
+ return 0;
+}
+
+/**
+ * Fills next token with JSON string.
+ */
+static int jsmn_parse_string(jsmn_parser *parser, const char *js,
+ size_t len, jsmntok_t *tokens, size_t num_tokens) {
+ jsmntok_t *token;
+
+ ptrdiff_t start = parser->pos;
+
+ parser->pos++;
+
+ /* Skip starting quote */
+ for (; parser->pos < len && js[parser->pos] != '\0'; parser->pos++) {
+ char c = js[parser->pos];
+
+ /* Quote: end of string */
+ if (c == '\"') {
+ if (tokens == NULL) {
+ return 0;
+ }
+ token = jsmn_alloc_token(parser, tokens, num_tokens);
+ if (token == NULL) {
+ parser->pos = start;
+ return JSMN_ERROR_NOMEM;
+ }
+ jsmn_fill_token(token, JSMN_STRING, start+1, parser->pos);
+#ifdef JSMN_PARENT_LINKS
+ token->parent = parser->toksuper;
+#endif
+ return 0;
+ }
+
+ /* Backslash: Quoted symbol expected */
+ if (c == '\\' && parser->pos + 1 < len) {
+ int i;
+ parser->pos++;
+ switch (js[parser->pos]) {
+ /* Allowed escaped symbols */
+ case '\"': case '/' : case '\\' : case 'b' :
+ case 'f' : case 'r' : case 'n' : case 't' :
+ break;
+ /* Allows escaped symbol \uXXXX */
+ case 'u':
+ parser->pos++;
+ for(i = 0; i < 4 && parser->pos < len && js[parser->pos] != '\0'; i++) {
+ /* If it isn't a hex character we have an error */
+ if(!((js[parser->pos] >= 48 && js[parser->pos] <= 57) || /* 0-9 */
+ (js[parser->pos] >= 65 && js[parser->pos] <= 70) || /* A-F */
+ (js[parser->pos] >= 97 && js[parser->pos] <= 102))) { /* a-f */
+ parser->pos = start;
+ return JSMN_ERROR_INVAL;
+ }
+ parser->pos++;
+ }
+ parser->pos--;
+ break;
+ /* Unexpected symbol */
+ default:
+ parser->pos = start;
+ return JSMN_ERROR_INVAL;
+ }
+ }
+ }
+ parser->pos = start;
+ return JSMN_ERROR_PART;
+}
+
+/**
+ * Parse JSON string and fill tokens.
+ */
+static int jsmn_parse(jsmn_parser *parser, const char *js, size_t len,
+ jsmntok_t *tokens, size_t num_tokens) {
+ int r;
+ int i;
+ jsmntok_t *token;
+ int count = parser->toknext;
+
+ for (; parser->pos < len && js[parser->pos] != '\0'; parser->pos++) {
+ char c;
+ jsmntype_t type;
+
+ c = js[parser->pos];
+ switch (c) {
+ case '{': case '[':
+ count++;
+ if (tokens == NULL) {
+ break;
+ }
+ token = jsmn_alloc_token(parser, tokens, num_tokens);
+ if (token == NULL)
+ return JSMN_ERROR_NOMEM;
+ if (parser->toksuper != -1) {
+ tokens[parser->toksuper].size++;
+#ifdef JSMN_PARENT_LINKS
+ token->parent = parser->toksuper;
+#endif
+ }
+ token->type = (c == '{' ? JSMN_OBJECT : JSMN_ARRAY);
+ token->start = parser->pos;
+ parser->toksuper = parser->toknext - 1;
+ break;
+ case '}': case ']':
+ if (tokens == NULL)
+ break;
+ type = (c == '}' ? JSMN_OBJECT : JSMN_ARRAY);
+#ifdef JSMN_PARENT_LINKS
+ if (parser->toknext < 1) {
+ return JSMN_ERROR_INVAL;
+ }
+ token = &tokens[parser->toknext - 1];
+ for (;;) {
+ if (token->start != -1 && token->end == -1) {
+ if (token->type != type) {
+ return JSMN_ERROR_INVAL;
+ }
+ token->end = parser->pos + 1;
+ parser->toksuper = token->parent;
+ break;
+ }
+ if (token->parent == -1) {
+ if(token->type != type || parser->toksuper == -1) {
+ return JSMN_ERROR_INVAL;
+ }
+ break;
+ }
+ token = &tokens[token->parent];
+ }
+#else
+ for (i = parser->toknext - 1; i >= 0; i--) {
+ token = &tokens[i];
+ if (token->start != -1 && token->end == -1) {
+ if (token->type != type) {
+ return JSMN_ERROR_INVAL;
+ }
+ parser->toksuper = -1;
+ token->end = parser->pos + 1;
+ break;
+ }
+ }
+ /* Error if unmatched closing bracket */
+ if (i == -1) return JSMN_ERROR_INVAL;
+ for (; i >= 0; i--) {
+ token = &tokens[i];
+ if (token->start != -1 && token->end == -1) {
+ parser->toksuper = i;
+ break;
+ }
+ }
+#endif
+ break;
+ case '\"':
+ r = jsmn_parse_string(parser, js, len, tokens, num_tokens);
+ if (r < 0) return r;
+ count++;
+ if (parser->toksuper != -1 && tokens != NULL)
+ tokens[parser->toksuper].size++;
+ break;
+ case '\t' : case '\r' : case '\n' : case ' ':
+ break;
+ case ':':
+ parser->toksuper = parser->toknext - 1;
+ break;
+ case ',':
+ if (tokens != NULL && parser->toksuper != -1 &&
+ tokens[parser->toksuper].type != JSMN_ARRAY &&
+ tokens[parser->toksuper].type != JSMN_OBJECT) {
+#ifdef JSMN_PARENT_LINKS
+ parser->toksuper = tokens[parser->toksuper].parent;
+#else
+ for (i = parser->toknext - 1; i >= 0; i--) {
+ if (tokens[i].type == JSMN_ARRAY || tokens[i].type == JSMN_OBJECT) {
+ if (tokens[i].start != -1 && tokens[i].end == -1) {
+ parser->toksuper = i;
+ break;
+ }
+ }
+ }
+#endif
+ }
+ break;
+#ifdef JSMN_STRICT
+ /* In strict mode primitives are: numbers and booleans */
+ case '-': case '0': case '1' : case '2': case '3' : case '4':
+ case '5': case '6': case '7' : case '8': case '9':
+ case 't': case 'f': case 'n' :
+ /* And they must not be keys of the object */
+ if (tokens != NULL && parser->toksuper != -1) {
+ jsmntok_t *t = &tokens[parser->toksuper];
+ if (t->type == JSMN_OBJECT ||
+ (t->type == JSMN_STRING && t->size != 0)) {
+ return JSMN_ERROR_INVAL;
+ }
+ }
+#else
+ /* In non-strict mode every unquoted value is a primitive */
+ default:
+#endif
+ r = jsmn_parse_primitive(parser, js, len, tokens, num_tokens);
+ if (r < 0) return r;
+ count++;
+ if (parser->toksuper != -1 && tokens != NULL)
+ tokens[parser->toksuper].size++;
+ break;
+
+#ifdef JSMN_STRICT
+ /* Unexpected char in strict mode */
+ default:
+ return JSMN_ERROR_INVAL;
+#endif
+ }
+ }
+
+ if (tokens != NULL) {
+ for (i = parser->toknext - 1; i >= 0; i--) {
+ /* Unmatched opened object or array */
+ if (tokens[i].start != -1 && tokens[i].end == -1) {
+ return JSMN_ERROR_PART;
+ }
+ }
+ }
+
+ return count;
+}
+
+/**
+ * Creates a new parser based over a given buffer with an array of tokens
+ * available.
+ */
+static void jsmn_init(jsmn_parser *parser) {
+ parser->pos = 0;
+ parser->toknext = 0;
+ parser->toksuper = -1;
+}
+/*
+ * -- jsmn.c end --
+ */
+
+#endif /* #ifdef CGLTF_IMPLEMENTATION */
+
+/* cgltf is distributed under MIT license:
+ *
+ * Copyright (c) 2018-2021 Johannes Kuhlmann
+
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
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