wip: some cleanup of ral

1 files changed, 68 insertions, 0 deletions

diff --git a/src/render/backends/opengl/backend_opengl.h b/src/render/backends/opengl/backend_opengl.h
new file mode 100644
index 0000000..8b88cf8
--- /dev/null
+++ b/src/render/backends/opengl/backend_opengl.h
@@ -0,0 +1,68 @@
+#pragma once
+
+#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_pipeline_layout {
+  void *pad
+} gpu_pipeline_layout;
+typedef struct gpu_pipeline {
+  u32 shader_id;
+  gpu_renderpass* renderpass;
+  vertex_description vertex_desc;
+  buffer_handle uniform_bindings[MAX_PIPELINE_UNIFORM_BUFFERS];
+  u32 uniform_count;
+  bool wireframe;
+} gpu_pipeline;
+typedef struct gpu_renderpass {
+  u32 fbo;
+  gpu_renderpass_desc description;
+} gpu_renderpass;
+typedef struct gpu_cmd_encoder {
+  gpu_pipeline *pipeline;
+} gpu_cmd_encoder;  // 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