Some changes

res/shaders/TextPass.slang

@@ -1,23 +1,5 @@
 import Common;
 
-struct GlyphInstanceData
-{
-    float x;
-    float y;
-    float z;
-    float width;
-    float height;
-    uint glyphIndex;
-};
-
-struct TextData
-{
-    StructuredBuffer<GlyphInstanceData> glyphs;
-    SamplerState glyphSampler;
-    Texture2D<float> glyphTextures[];
-};
-ParameterBlock<TextData> pText;
-
 struct VertexInput
 {
     uint vertexId : SV_VertexID;
@@ -31,6 +13,24 @@ struct VertexOutput
     uint glyphIndex : GLYPHINDEX;
 };
 
+struct GlyphInstanceData
+{
+    float x;
+    float y;
+    float z;
+    float width;
+    float height;
+    uint glyphIndex;
+};
+struct TextData
+{
+    StructuredBuffer<GlyphInstanceData> glyphs;
+    SamplerState glyphSampler;
+    Texture2D<float> glyphTextures[];
+};
+ParameterBlock<TextData> pText;
+
+
 [shader("vertex")]
 VertexOutput vertexMain(VertexInput input)
 {

res/shaders/lib/LightEnv.slang

@@ -70,6 +70,10 @@ struct LightEnv
 layout(set=3)
 ParameterBlock<LightEnv> pLightEnv;
 
+[Differentiable]
+float polynomial(float a, float b, float c, float x) {
+    return a * x * x + b * x + c;
+}
 
 interface IBRDF
 {