Added missing functions that caused shader graphs with types Eye, Fabric, Hair and StackLit to not compile when a debug mode is enabled. (#57)

Author: AndrewSaraevUnity

com.unity.render-pipelines.high-definition/Runtime/Material/Eye/Eye.hlsl

@@ -246,6 +246,11 @@ void GetPBRValidatorDebug(SurfaceData surfaceData, inout float3 result)
     result = surfaceData.baseColor;
 }
 
+float4 GetHeightMapDebug(SurfaceData surfaceData)
+{
+    return float4(surfaceData.baseColor, 1);
+}
+
 //-----------------------------------------------------------------------------
 // PreLightData
 //

com.unity.render-pipelines.high-definition/Runtime/Material/Fabric/Fabric.hlsl

@@ -250,6 +250,11 @@ void GetPBRValidatorDebug(SurfaceData surfaceData, inout float3 result)
     result = surfaceData.baseColor;
 }
 
+float4 GetHeightMapDebug(SurfaceData surfaceData)
+{
+    return float4(surfaceData.baseColor, 1);
+}
+
 //-----------------------------------------------------------------------------
 // PreLightData
 //

com.unity.render-pipelines.high-definition/Runtime/Material/Hair/Hair.hlsl

@@ -232,6 +232,11 @@ void GetPBRValidatorDebug(SurfaceData surfaceData, inout float3 result)
     result = surfaceData.diffuseColor;
 }
 
+float4 GetHeightMapDebug(SurfaceData surfaceData)
+{
+    return float4(surfaceData.diffuseColor, 1);
+}
+
 //-----------------------------------------------------------------------------
 // PreLightData
 //

com.unity.render-pipelines.high-definition/Runtime/Material/StackLit/StackLit.hlsl

@@ -943,6 +943,10 @@ void GetPBRValidatorDebug(SurfaceData surfaceData, inout float3 result)
     result = surfaceData.baseColor;
 }
 
+float4 GetHeightMapDebug(SurfaceData surfaceData)
+{
+    return float4(surfaceData.baseColor, 1);
+}
 
 //-----------------------------------------------------------------------------
 // PreLightData