[UUM-92200] Force SafeNormalize when blending DBuffer normals

Mikkel Simonsen · Evergreen · commit ef4ac3d0d57f · 2025-01-31T01:44:22.000Z
diff --git a/Packages/com.unity.render-pipelines.universal/ShaderLibrary/DBuffer.hlsl b/Packages/com.unity.render-pipelines.universal/ShaderLibrary/DBuffer.hlsl
@@ -139,7 +139,7 @@ void ApplyDecal(float4 positionCS,
     // Always test the normal as we can have decompression artifact
     if (decalSurfaceData.normalWS.w < 1.0)
     {
-        normalWS.xyz = normalize(normalWS.xyz * decalSurfaceData.normalWS.w + decalSurfaceData.normalWS.xyz);
+        normalWS.xyz = SafeNormalize(normalWS.xyz * decalSurfaceData.normalWS.w + decalSurfaceData.normalWS.xyz);
     }
 #endif
 

Original file line number	Diff line number	Diff line change
`@@ -139,7 +139,7 @@ void ApplyDecal(float4 positionCS,`
`139`	`139`	`// Always test the normal as we can have decompression artifact`
`140`	`140`	`if (decalSurfaceData.normalWS.w < 1.0)`
`141`	`141`	`{`
`142`		`- normalWS.xyz = normalize(normalWS.xyz * decalSurfaceData.normalWS.w + decalSurfaceData.normalWS.xyz);`
	`142`	`+ normalWS.xyz = SafeNormalize(normalWS.xyz * decalSurfaceData.normalWS.w + decalSurfaceData.normalWS.xyz);`
`143`	`143`	`}`
`144`	`144`	`#endif`
`145`	`145`