1 files changed, 48 insertions, 0 deletions
diff --git a/archive/src/render/shadows.h b/archive/src/render/shadows.h
new file mode 100644
index 0000000..0482d10
--- /dev/null
+++ b/archive/src/render/shadows.h
@@ -0,0 +1,48 @@
+/**
+ * @brief Functions for adding shadows to scene rendering.
+ */
+
+#pragma once
+#include "defines.h"
+#include "ral_impl.h"
+#include "ral_types.h"
+#include "render_types.h"
+
+typedef struct Shadow_Storage {
+  bool enabled;
+  GPU_Renderpass* shadowmap_pass;
+  GPU_Pipeline* shadowmap_pipeline;
+  TextureHandle depth_texture;
+  bool debug_quad_enabled;
+  Mesh quad;
+  GPU_Renderpass* debugquad_pass;
+  GPU_Pipeline* debugquad_pipeline;
+  // TODO: Some statistics tracking
+} Shadow_Storage;
+
+typedef struct ShadowUniforms {
+  Mat4 light_space;
+  Mat4 model;
+} ShadowUniforms;
+
+typedef struct Camera Camera;
+typedef struct Mat4 Mat4;
+
+// --- Public API
+PUB void Shadow_Init(Shadow_Storage* storage, u32 shadowmap_width, u32 shadowmap_height);
+
+/** @brief Run shadow map generation for given entities, and store in a texture.
+ *  @note Uses active directional light for now */
+PUB void Shadow_Run(RenderEnt* entities, size_t entity_count);
+
+PUB void Shadow_DrawDebugQuad();
+
+/** @brief Get the shadow texture generated from shadowmap pass */
+PUB TextureHandle Shadow_GetShadowMapTexture(Shadow_Storage* storage);
+
+// --- Internal
+GPU_Renderpass* Shadow_RPassCreate();                        // Creates the render pass
+GPU_Pipeline* Shadow_PipelineCreate(GPU_Renderpass* rpass);  // Creates the pipeline
+void Shadow_ShadowmapExecute(Shadow_Storage* storage, Mat4 light_space_transform,
+                             RenderEnt* entities, size_t entity_count);
+void Shadow_RenderDebugQuad();