2 files changed, 142 insertions, 0 deletions
diff --git a/src/renderer/cleanroom/README.md b/src/renderer/cleanroom/README.md
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+++ b/src/renderer/cleanroom/README.md
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+# Cleanroom / Re-jig of the renderer structure
+\ No newline at end of file
diff --git a/src/renderer/cleanroom/types.h b/src/renderer/cleanroom/types.h
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+++ b/src/renderer/cleanroom/types.h
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+#pragma once
+#include "darray.h"
+#include "defines.h"
+#include "str.h"
+
+typedef int texture_handle;
+typedef int buffer_handle;
+typedef int model_handle;
+
+/** @brief Texture Description - used by texture creation functions */
+typedef struct texture_desc {
+  // gpu_texture_type tex_type;
+  // gpu_texture_format format;
+  // u32x2 extents;
+} texture_desc;
+
+/* 
+ - render_types.h
+ - ral_types.h 
+ - ral.h
+ - render.h ?
+*/
+
+// gpu types
+typedef enum gpu_primitive_topology {
+  CEL_PRIMITIVE_TOPOLOGY_POINT,
+  CEL_PRIMITIVE_TOPOLOGY_LINE,
+  CEL_PRIMITIVE_TOPOLOGY_LINE_STRIP,
+  CEL_PRIMITIVE_TOPOLOGY_TRIANGLE,
+  CEL_PRIMITIVE_TOPOLOGY_TRIANGLE_STRIP,
+  CEL_PRIMITIVE_TOPOLOGY_COUNT
+} cel_primitive_topology;
+
+typedef enum gpu_texture_type {
+  CEL_TEXTURE_TYPE_2D,
+  CEL_TEXTURE_TYPE_3D,
+  CEL_TEXTURE_TYPE_2D_ARRAY,
+  CEL_TEXTURE_TYPE_CUBE_MAP,
+  CEL_TEXTURE_TYPE_COUNT
+} gpu_texture_type;
+
+typedef enum gpu_texture_format {
+  CEL_TEXTURE_FORMAT_8_8_8_8_RGBA_UNORM,
+  CEL_TEXTURE_FORMAT_DEPTH_DEFAULT,
+  CEL_TEXTURE_FORMAT_COUNT
+} gpu_texture_format;
+
+/* render_types */
+typedef struct mesh mesh;
+typedef struct model model;
+typedef struct model pbr_material;
+typedef struct model bp_material; // blinn-phong
+
+#include "maths_types.h"
+
+typedef enum vertex_format {
+  VERTEX_STATIC_3D,
+  VERTEX_SPRITE,
+  VERTEX_COUNT
+} vertex_format;
+
+typedef union vertex {
+  struct {
+    vec3 position;
+    vec4 colour;
+    vec2 tex_coords;
+    vec3 normal;
+  } static_3d; /** @brief standard vertex format for static geometry in 3D */
+
+  struct {
+    vec2 position;
+    vec4 colour;
+    vec2 tex_coords;
+  } sprite;
+
+  // TODO: animated 3d
+} vertex;
+
+KITC_DECL_TYPED_ARRAY(vertex)
+
+typedef struct geometry_data {
+  vertex_format format;
+  vertex_darray vertices;
+} geometry_data;
+
+typedef struct mesh {
+  buffer_handle vertex_buffer;
+  buffer_handle index_buffer;
+  u32 index_count;
+  bool has_indices;
+  geometry_data* vertices; // NULL means it has been freed
+} mesh;
+
+typedef struct model {
+  str8 debug_name;
+  mesh* meshes;
+  u32 mesh_count;
+} model;
+
+// Three registers
+// 1. low level graphics api calls "ral"
+// 2. higher level render calls
+// 3. simplified immediate mode API
+
+/* render.h */
+// frontend -- these can be called from say a loop in an example, or via FFI
+texture_handle texture_create(const char* debug_name, texture_desc description, const u8* data);
+
+void texture_data_upload(texture_handle texture);
+buffer_handle buffer_create(const char* debug_name, u64 size);
+
+// models and meshes are implemented **in terms of the above**
+mesh mesh_create();
+model_handle model_load(const char* filepath);
+
+/* ral.h */
+// backend -- these are not seen by the higher-level code
+typedef struct gpu_swapchain gpu_swapchain;
+typedef struct gpu_device gpu_device;
+typedef struct gpu_pipeline gpu_pipeline;
+
+void gpu_texture_init();
+void gpu_texture_upload();
+void gpu_buffer_init();
+void gpu_buffer_upload();
+
+// command buffer gubbins
+
+// 3. SIMA (simplified immediate mode api)
+//      - dont need to worry about uploading mesh data
+//      - very useful for debugging
+void imm_draw_cuboid();
+void imm_draw_sphere(vec3 pos, f32 radius, vec4 colour);
+void imm_draw_camera_frustum();
+static void imm_draw_model(const char* model_filepath); // tracks internally whether the model is loaded
+
+static void imm_draw_model(const char* model_filepath) {
+  // check that model is loaded
+  // if not loaded, load model and upload to gpu - LRU cache for models
+  // else submit draw call
+}
+\ No newline at end of file