Add a vulkan renderer that renders an OBJ

1 files changed, 15 insertions, 0 deletions

diff --git a/src/hash.c b/src/hash.c
new file mode 100644
index 0000000..cfdafc3
--- /dev/null
+++ b/src/hash.c
@@ -0,0 +1,15 @@
+#include "hash.h"
+#include <assert.h>
+
+uint64_t vgltf_hash_fnv_1a(const char *bytes, size_t nbytes) {
+  assert(bytes);
+  static const uint64_t FNV_OFFSET_BASIS = 14695981039346656037u;
+  static const uint64_t FNV_PRIME = 1099511628211u;
+  uint64_t hash = FNV_OFFSET_BASIS;
+  for (size_t i = 0; i < nbytes; i++) {
+    hash = hash ^ bytes[i];
+    hash = hash * FNV_PRIME;
+  }
+
+  return hash;
+}