From b71eac2069a30349435c192d682e865718c86a15 Mon Sep 17 00:00:00 2001
From: Clement Sibille <clements@lisible.xyz>
Date: Mon, 5 May 2025 08:32:33 +0200
Subject: Add a vulkan renderer that renders an OBJ

---
 src/renderer/renderer.h | 126 ++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 126 insertions(+)
 create mode 100644 src/renderer/renderer.h

(limited to 'src/renderer/renderer.h')

diff --git a/src/renderer/renderer.h b/src/renderer/renderer.h
new file mode 100644
index 0000000..79e1f3d
--- /dev/null
+++ b/src/renderer/renderer.h
@@ -0,0 +1,126 @@
+#ifndef VGLTF_RENDERER_H
+#define VGLTF_RENDERER_H
+
+#include "../maths.h"
+#include "../platform.h"
+#include "vma_usage.h"
+#include <vulkan/vulkan.h>
+
+struct vgltf_vertex {
+  vgltf_vec3 position;
+  vgltf_vec3 color;
+  vgltf_vec2 texture_coordinates;
+};
+VkVertexInputBindingDescription vgltf_vertex_binding_description(void);
+
+struct vgltf_vertex_input_attribute_descriptions {
+  VkVertexInputAttributeDescription descriptions[3];
+  uint32_t count;
+};
+struct vgltf_vertex_input_attribute_descriptions
+vgltf_vertex_attribute_descriptions(void);
+
+struct vgltf_renderer_uniform_buffer_object {
+  alignas(16) vgltf_mat4 model;
+  alignas(16) vgltf_mat4 view;
+  alignas(16) vgltf_mat4 projection;
+};
+
+struct vgltf_renderer_allocated_buffer {
+  VkBuffer buffer;
+  VmaAllocation allocation;
+  VmaAllocationInfo info;
+};
+
+struct vgltf_renderer_allocated_image {
+  VkImage image;
+  VmaAllocation allocation;
+  VmaAllocationInfo info;
+};
+
+struct vgltf_vk_instance {
+  VkInstance instance;
+};
+
+struct vgltf_vk_device {
+  VkPhysicalDevice physical_device;
+  VkDevice device;
+  VkQueue graphics_queue;
+  VkQueue present_queue;
+  VmaAllocator allocator;
+};
+
+struct vgltf_vk_surface {
+  VkSurfaceKHR surface;
+};
+
+constexpr int VGLTF_RENDERER_MAX_SWAPCHAIN_IMAGE_COUNT = 32;
+struct vgltf_vk_swapchain {
+  VkSwapchainKHR swapchain;
+  VkFormat swapchain_image_format;
+  VkImage swapchain_images[VGLTF_RENDERER_MAX_SWAPCHAIN_IMAGE_COUNT];
+  VkImageView swapchain_image_views[VGLTF_RENDERER_MAX_SWAPCHAIN_IMAGE_COUNT];
+  VkExtent2D swapchain_extent;
+  uint32_t swapchain_image_count;
+};
+
+struct vgltf_vk_pipeline {
+  VkPipelineLayout layout;
+  VkPipeline pipeline;
+};
+
+constexpr int VGLTF_RENDERER_MAX_FRAME_IN_FLIGHT_COUNT = 2;
+struct vgltf_renderer {
+  struct vgltf_vk_instance instance;
+  struct vgltf_vk_device device;
+  VkDebugUtilsMessengerEXT debug_messenger;
+  struct vgltf_vk_surface surface;
+  struct vgltf_vk_swapchain swapchain;
+  struct vgltf_renderer_allocated_image depth_image;
+  VkImageView depth_image_view;
+
+  VkRenderPass render_pass;
+  VkDescriptorSetLayout descriptor_set_layout;
+
+  VkDescriptorPool descriptor_pool;
+  VkDescriptorSet descriptor_sets[VGLTF_RENDERER_MAX_FRAME_IN_FLIGHT_COUNT];
+  VkPipelineLayout pipeline_layout;
+  VkPipeline graphics_pipeline;
+
+  VkFramebuffer swapchain_framebuffers[VGLTF_RENDERER_MAX_SWAPCHAIN_IMAGE_COUNT];
+
+  VkCommandPool command_pool;
+  VkCommandBuffer command_buffer[VGLTF_RENDERER_MAX_FRAME_IN_FLIGHT_COUNT];
+  VkSemaphore
+      image_available_semaphores[VGLTF_RENDERER_MAX_FRAME_IN_FLIGHT_COUNT];
+  VkSemaphore
+      render_finished_semaphores[VGLTF_RENDERER_MAX_FRAME_IN_FLIGHT_COUNT];
+  VkFence in_flight_fences[VGLTF_RENDERER_MAX_FRAME_IN_FLIGHT_COUNT];
+
+  struct vgltf_renderer_allocated_buffer
+      uniform_buffers[VGLTF_RENDERER_MAX_FRAME_IN_FLIGHT_COUNT];
+  void *mapped_uniform_buffers[VGLTF_RENDERER_MAX_FRAME_IN_FLIGHT_COUNT];
+
+  uint32_t mip_level_count;
+  struct vgltf_renderer_allocated_image texture_image;
+  VkImageView texture_image_view;
+  VkSampler texture_sampler;
+  struct vgltf_vertex vertices[100000];
+  int vertex_count;
+  uint16_t indices[100000];
+  int index_count;
+  struct vgltf_renderer_allocated_buffer vertex_buffer;
+  struct vgltf_renderer_allocated_buffer index_buffer;
+
+  struct vgltf_window_size window_size;
+  uint32_t current_frame;
+  bool framebuffer_resized;
+};
+bool vgltf_renderer_init(struct vgltf_renderer *renderer,
+                       struct vgltf_platform *platform);
+void vgltf_renderer_deinit(struct vgltf_renderer *renderer);
+bool vgltf_renderer_render_frame(struct vgltf_renderer *renderer);
+void vgltf_renderer_on_window_resized(struct vgltf_renderer *renderer,
+                                    struct vgltf_window_size size);
+
+#endif // VGLTF_RENDERER_H
-- 
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