1 files changed, 97 insertions, 0 deletions
diff --git a/src/render/ral.c b/src/render/ral.c
new file mode 100644
index 0000000..9ca99ce
--- /dev/null
+++ b/src/render/ral.c
@@ -0,0 +1,97 @@
+#include "ral.h"
+#include "file.h"
+#include "log.h"
+#include "mem.h"
+#include "str.h"
+
+#if defined(CEL_REND_BACKEND_VULKAN)
+#include "backend_vulkan.h"
+#elif defined(CEL_REND_BACKEND_METAL)
+#include "backend_metal.h"
+#elif defined(CEL_REND_BACKEND_OPENGL)
+#include "backend_opengl.h"
+#endif
+
+size_t vertex_attrib_size(vertex_attrib_type attr) {
+  switch (attr) {
+    case ATTR_F32:
+    case ATTR_U32:
+    case ATTR_I32:
+      return 4;
+    case ATTR_F32x2:
+    case ATTR_U32x2:
+    case ATTR_I32x2:
+      return 8;
+    case ATTR_F32x3:
+    case ATTR_U32x3:
+    case ATTR_I32x3:
+      return 12;
+    case ATTR_F32x4:
+    case ATTR_U32x4:
+    case ATTR_I32x4:
+      return 16;
+      break;
+  }
+}
+
+void vertex_desc_add(vertex_description* builder, const char* name, vertex_attrib_type type) {
+  u32 i = builder->attributes_count;
+
+  size_t size = vertex_attrib_size(type);
+  builder->attributes[i] = type;
+  builder->stride += size;
+  builder->attr_names[i] = name;
+
+  builder->attributes_count++;
+}
+
+vertex_description static_3d_vertex_description() {
+  vertex_description builder = { .debug_label = "Standard static 3d vertex format" };
+  vertex_desc_add(&builder, "inPosition", ATTR_F32x3);
+  vertex_desc_add(&builder, "inNormal", ATTR_F32x3);
+  vertex_desc_add(&builder, "inTexCoords", ATTR_F32x2);
+  builder.use_full_vertex_size = true;
+  return builder;
+}
+
+void backend_pools_init(arena* a, gpu_backend_pools* backend_pools) {
+  pipeline_layout_pool pipeline_layout_pool =
+      pipeline_layout_pool_create(a, MAX_PIPELINES, sizeof(gpu_pipeline_layout));
+  backend_pools->pipeline_layouts = pipeline_layout_pool;
+  pipeline_pool pipeline_pool = pipeline_pool_create(a, MAX_PIPELINES, sizeof(gpu_pipeline));
+  backend_pools->pipelines = pipeline_pool;
+  renderpass_pool rpass_pool = renderpass_pool_create(a, MAX_RENDERPASSES, sizeof(gpu_renderpass));
+  backend_pools->renderpasses = rpass_pool;
+
+  // context.gpu_pools;
+}
+
+void resource_pools_init(arena* a, struct resource_pools* res_pools) {
+  buffer_pool buf_pool = buffer_pool_create(a, MAX_BUFFERS, sizeof(gpu_buffer));
+  res_pools->buffers = buf_pool;
+  texture_pool tex_pool = texture_pool_create(a, MAX_TEXTURES, sizeof(gpu_texture));
+  res_pools->textures = tex_pool;
+
+  // context.resource_pools = res_pools;
+}
+
+void print_shader_binding(shader_binding b) {
+  printf("Binding name: %s type %s vis %d stores data %d\n", b.label,
+         shader_binding_type_name[b.type], b.vis, b.stores_data);
+}
+
+shader_desc shader_quick_load(const char* filepath) {
+  arena a = arena_create(malloc(1024 * 1024), 1024 * 1024);
+  str8 path = str8_cstr_view(filepath);
+  str8_opt shader = str8_from_file(&a, path);
+  if (!shader.has_value) {
+    ERROR_EXIT("Failed to load shaders from disk");
+  }
+
+  return (shader_desc){
+    .debug_name = filepath,
+    .code = shader.contents,
+    .filepath = path,
+    .is_spirv = true,
+  };
+}