1 files changed, 9 insertions, 3 deletions
diff --git a/assets/shaders/equirect_to_cubemap.slang b/assets/shaders/equirect_to_cubemap.slang
index 9b2ea4b..510e6b0 100644
--- a/assets/shaders/equirect_to_cubemap.slang
+++ b/assets/shaders/equirect_to_cubemap.slang
@@ -1,5 +1,11 @@
-uniform float4x4 u_Projection;
-uniform float4x4 u_View;
+// Equirectangular HDRI -> cubemap face projection. NOTE: the OpenGL path uses the
+// hand-written assets/shaders/EquirectToCubemap.glsl instead; this Slang version
+// feeds the Vulkan cubemap bake (vulkan_cubemap.cpp), which binds the view /
+// projection as a $Globals UBO. Kept as loose `uniform` globals (not a
+// ConstantBuffer) so both paths bind them the same way.
+
+uniform float4x4 u_projection;
+uniform float4x4 u_view;
 
 struct VSInput  { float3 position : POSITION; };
 struct VSOutput { float4 position : SV_Position; float3 worldPos : TEXCOORD0; };
@@ -9,7 +15,7 @@ VSOutput vertexMain(VSInput input)
 {
     VSOutput output;
     output.worldPos = input.position;
-    output.position = mul(u_Projection, mul(u_View, float4(input.position, 1.0)));
+    output.position = mul(u_projection, mul(u_view, float4(input.position, 1.0)));
     return output;
 }