3 files changed, 28 insertions, 5 deletions
diff --git a/src/renderer/cleanroom/immediate.c b/src/renderer/cleanroom/immediate.c
new file mode 100644
index 0000000..8e4bf7e
--- /dev/null
+++ b/src/renderer/cleanroom/immediate.c
@@ -0,0 +1,18 @@
+#include "immediate.h"
+#include "maths.h"
+#include "primitives.h"
+#include "render.h"
+#include "types.h"
+
+void imm_draw_sphere(vec3 pos, f32 radius, vec4 colour) {
+  // Create the vertices
+  geometry_data geometry = geo_create_uvsphere(radius, 16, 16);
+  geo_set_vertex_colours(&geometry, colour);
+
+  // Upload to GPU
+  mat4 model = mat4_translation(pos);
+
+  // Set pipeline
+
+  // Draw
+}
+\ No newline at end of file
diff --git a/src/renderer/cleanroom/simda.h b/src/renderer/cleanroom/immediate.h
index d0b4794..6d93c53 100644
--- a/src/renderer/cleanroom/simda.h
+++ b/src/renderer/cleanroom/immediate.h
@@ -1,18 +1,20 @@
 #pragma once
 
+#include "geometry.h"
 #include "maths_types.h"
 
 // 3. SIMA (simplified immediate mode api) / render.h
 //      - dont need to worry about uploading mesh data
 //      - very useful for debugging
-void imm_draw_cuboid();
+void imm_draw_cuboid(vec3 pos, quat rotation, f32x3 extents, vec4 colour);
 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) {
+// 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
+// }
+\ No newline at end of file
diff --git a/src/renderer/cleanroom/types.h b/src/renderer/cleanroom/types.h
index b18b5b8..7a6cfbd 100644
--- a/src/renderer/cleanroom/types.h
+++ b/src/renderer/cleanroom/types.h
@@ -96,8 +96,11 @@ typedef struct geometry_data {
   vertex_darray vertices;
   bool has_indices;
   u32_darray indices;
+  vec3 colour; /** Optional: set vertex colours */
 } geometry_data;
 
+void geo_set_vertex_colours(geometry_data* geo, vec4 colour);
+
 typedef struct mesh {
   buffer_handle vertex_buffer;
   buffer_handle index_buffer;