Add missing shader file

CHANGELOG.md

@@ -56,10 +56,8 @@ received some polish!
 - Decorator rendering (grass, plants, small rocks, etc.)
 - Transform gizmo
 - Compile-time shader compilation
-- Post processing effects
+- Post processing framework
     - Ambient occlusion
-    - ~~Bloom~~ (TODO)
-    - ~~Color grading (WIP, currently set manually)~~ (TODO)
 - Settings panel
 - Fullscreen mode (can be enabled through `--fullscreen` argument or alt+enter)
 - Hide the cursor when moving the camera

crates/alkahest-renderer/assets/shaders/debug/custom.hlsl

@@ -0,0 +1,42 @@
+#include "scopes/view.hlsli"
+
+cbuffer DebugShapeOptions : register(b0) {
+    float4x4 local_to_world;
+    float4 color;
+}
+
+struct VSOutput {
+    float4 position : SV_POSITION;
+//     float3 normal : NORMAL;
+};
+
+// Texture2D Matcap : register(t8);
+// SamplerState SampleType : register(s0);
+//
+// float2 MatcapUV(float3 eye, float3 normal) {
+//     float2 muv = normal.xy * 0.5 + 0.5;
+//     return float2(muv.x, 1.0 - muv.y);
+// }
+
+VSOutput VSMain(
+    float3 position : POSITION,
+    float3 normal : NORMAL
+    ) {
+
+    VSOutput output;
+
+    output.position = mul(world_to_projective, mul(local_to_world, float4(position, 1.0)));
+//     output.normal = normalize(mul(float4(normal, 0.0), (float3x3)local_to_world));
+
+    return output;
+}
+
+// Pixel Shader
+float4 PSMain(VSOutput input) : SV_Target {
+//     float3 normal = normalize(input.normal.xyz);
+//     float3 eye = normalize(camera_forward.xyz);
+
+//     float3 matcap = Matcap.SampleLevel(SampleType, MatcapUV(eye, normal), 0).rgb;
+//     return float4(matcap * color, color.a);
+    return color;
+}