1 files changed, 76 insertions, 0 deletions
diff --git a/src/ral/backends/opengl/backend_opengl.h b/src/ral/backends/opengl/backend_opengl.h
index e69de29..22162f3 100644
--- a/src/ral/backends/opengl/backend_opengl.h
+++ b/src/ral/backends/opengl/backend_opengl.h
@@ -0,0 +1,76 @@
+#pragma once
+
+#include "ral_impl.h"
+#ifdef CEL_REND_BACKEND_OPENGL
+
+#include "defines.h"
+#include "maths_types.h"
+#include "ral.h"
+#include "ral_types.h"
+
+#define MAX_PIPELINE_UNIFORM_BUFFERS 32
+
+#define OPENGL_DEFAULT_FRAMEBUFFER 0
+
+typedef struct GPU_Swapchain{
+  u32x2 dimensions;
+}GPU_Swapchain;
+
+typedef struct GPU_Device {
+} GPU_Device;
+
+typedef struct GPU_PipelineLayout{
+  void *pad;
+}GPU_PipelineLayout;
+
+typedef struct GPU_Pipeline {
+  u32 shader_id;
+  GPU_Renderpass* renderpass;
+  VertexDescription vertex_desc;
+  BufferHandle uniform_bindings[MAX_PIPELINE_UNIFORM_BUFFERS];
+  u32 uniform_count;
+  bool wireframe;
+} GPU_Pipeline;
+
+typedef struct GPU_Renderpass {
+  u32 fbo;
+  GPU_RenderpassDesc description;
+} GPU_Renderpass;
+
+typedef struct GPU_CmdEncoder {
+  GPU_Pipeline *pipeline;
+} GPU_CmdEncoder;  // Recording
+
+typedef struct gpu_cmd_buffer {
+  void *pad;
+} gpu_cmd_buffer;  // Ready for submission
+
+typedef struct GPU_Buffer {
+  union {
+    u32 vbo;
+    u32 ibo;
+    u32 ubo;
+  } id;
+  union {
+    u32 vao;
+    u32 ubo_binding_point
+  }; // Optional
+  char* name;
+  u64 size;
+} GPU_Buffer;
+
+typedef struct GPU_Texture {
+  u32 id;
+  void* pad;
+} GPU_Texture;
+
+typedef struct opengl_support {
+} opengl_support;
+
+u32 shader_create_separate(const char *vert_shader, const char *frag_shader);
+
+void uniform_vec3f(u32 program_id, const char *uniform_name, Vec3 *value);
+void uniform_f32(u32 program_id, const char *uniform_name, f32 value);
+void uniform_i32(u32 program_id, const char *uniform_name, i32 value);
+void uniform_mat4f(u32 program_id, const char *uniform_name, Mat4 *value);
+#endif