1 files changed, 151 insertions, 0 deletions
diff --git a/archive/src/render/render.h b/archive/src/render/render.h
new file mode 100644
index 0000000..d752f8b
--- /dev/null
+++ b/archive/src/render/render.h
@@ -0,0 +1,151 @@
+/**
+ * @brief
+ */
+
+#pragma once
+#include "camera.h"
+#include "defines.h"
+#include "grid.h"
+#include "immdraw.h"
+#include "maths_types.h"
+#include "ral_types.h"
+#include "render_types.h"
+#include "shadows.h"
+
+typedef struct Renderer Renderer;
+typedef struct GLFWwindow GLFWwindow;
+typedef struct RendererConfig {
+  const char* window_name;
+  u32 scr_width, scr_height;
+  Vec3 clear_colour;
+} RendererConfig;
+
+typedef struct RenderFlags {
+  bool wireframe;
+} RenderFlags;
+
+typedef struct RenderCtx {
+  Mat4 view;
+  Mat4 projection;
+} RenderCtx;
+
+/** @brief Holds globally bound data for rendering a scene. Typically held by the renderer.
+ *         Whenever you call draw functions you can think of this as an implicit parameter. */
+typedef struct RenderScene {
+  Camera camera;
+  DirectionalLight sun;
+} RenderScene;
+
+PUB void SetCamera(Camera camera);
+PUB void SetMainLight(DirectionalLight light);
+
+// #define MESH_GET(h) (Mesh_pool_get(g_core.renderer->meshes, h))
+// #define MATERIAL_GET(h) (Material_pool_get(g_core.renderer->material, h))
+
+// --- Lifecycle
+
+PUB bool Renderer_Init(RendererConfig config, Renderer* renderer, GLFWwindow** out_window,
+                       GLFWwindow* optional_window);
+PUB void Renderer_Shutdown(Renderer* renderer);
+PUB size_t Renderer_GetMemReqs();
+void Render_WindowSizeChanged(GLFWwindow* window, i32 new_width, i32 new_height);
+
+// internal init functions
+void DefaultPipelinesInit(Renderer* renderer);
+
+// NOTE: All of these functions grab the Renderer instance off the global Core
+PUB void Render_FrameBegin(Renderer* renderer);
+PUB void Render_FrameEnd(Renderer* renderer);
+
+/** @brief  */
+PUB void Render_RenderEntities(RenderEnt* entities, size_t entity_count);
+
+// TODO: Render_FrameDraw(); - this will
+
+// --- Resources
+
+PUB TextureData TextureDataLoad(const char* path, bool invert_y);
+PUB void TextureUpload(TextureHandle handle, size_t n_bytes, const void* data);
+PUB TextureHandle TextureLoadFromFile(const char* path);
+PUB ModelHandle ModelLoad(const char* debug_name, const char* filepath);
+
+// --- Rendering Data
+
+PUB Mesh Mesh_Create(Geometry* geometry, bool free_on_upload);
+PUB void Mesh_Delete(Mesh* mesh);
+Mesh* Mesh_Get(MeshHandle handle);
+void Geometry_Destroy(Geometry* geometry);
+MeshHandle Mesh_Insert(Mesh* mesh);
+void Mesh_DebugPrint(Mesh* mesh);
+MaterialHandle Material_Insert(Material* material);
+
+/** @brief gets render entities from a model and pushes them into a dynamic array for rendering */
+size_t ModelExtractRenderEnts(RenderEnt_darray* entities, ModelHandle model_handle, Mat4 affine,
+                              RenderEntityFlags flags);
+
+// --- Drawing
+
+// NOTE: These functions use the globally bound camera in RenderScene
+PUB void DrawMesh(Mesh* mesh, Material* material, Mat4 model);
+
+/** @brief the renderer does some internal bookkeeping for terrain so we use the terrain
+           stored on the Renderer rather than accept it as a parameter */
+PUB void Render_DrawTerrain();
+
+// --- Getters (not in love with this but I'm finding keeping Renderer internals private to be okay)
+arena* GetRenderFrameArena(Renderer* r);
+
+typedef struct RenderScene RenderScene;
+typedef struct Shadow_Storage Shadow_Storage;
+typedef struct Terrain_Storage Terrain_Storage;
+
+RenderScene* Render_GetScene();
+Shadow_Storage* Render_GetShadowStorage();
+Terrain_Storage* Render_GetTerrainStorage();
+Grid_Storage* Render_GetGridStorage();
+Immdraw_Storage* Render_GetImmdrawStorage();
+TextureHandle Render_GetWhiteTexture();
+arena* Render_GetFrameArena();
+Mesh_pool* Render_GetMeshPool();
+Material_pool* Render_GetMaterialPool();
+
+// --- Setters
+void Render_SetRenderMode(RenderMode mode);
+
+// -------------------------------------------------
+
+// Frame lifecycle on CPU
+
+// 1. extract
+// 2. culling
+// 3. render
+// 4. dispatch (combined with render for now)
+
+// typedef struct Cull_Result {
+//   u64 n_visible_objects;
+//   u64 n_culled_objects;
+//   u32* visible_ent_indices;  // allocated on frame arena
+//   size_t index_count;
+// } Cull_Result;
+
+// // everything that can be in the world, knows how to extract rendering data
+// typedef void (*ExtractRenderData)(void* world_data);
+
+// typedef struct Renderer Renderer;
+
+// /** @brief Produces a smaller set of only those meshes visible in the camera frustum on the CPU
+// */ Cull_Result Frame_Cull(Renderer* ren, RenderEnt* entities, size_t entity_count, Camera*
+// camera);
+
+// Cull_Result Frame_Cull(Renderer* ren, RenderEnt* entities, size_t entity_count, Camera* camera) {
+//   // TODO: u32 chunk_count = Tpool_GetNumWorkers();
+
+//   arena* frame_arena = GetRenderFrameArena(ren);
+
+//   Cull_Result result = { 0 };
+//   result.visible_ent_indices = arena_alloc(
+//       frame_arena, sizeof(u32) * entity_count);  // make space for if all ents are visible
+
+//   assert((result.n_visible_objects + result.n_culled_objects == entity_count));
+//   return result;
+// }