Merge pull request #1325 from Unity-Technologies/Fix-triplanar-for-meta-pass

Fix triplanar with meta pass

ScriptableRenderPipeline/HDRenderPipeline/HDRP/ShaderPass/ShaderPassLightTransport.hlsl

     output.vmesh.positionWS = positionWS;
 #endif
 
-    // Not required for meta pass but to silent the shader compiler warning in case it is declare
-    output.vmesh.normalWS = float3(0.0, 0.0, 0.0);
-    output.vmesh.tangentWS = float4(0.0, 0.0, 0.0, 0.0);
+    // Normal is required for triplanar mapping
+    output.vmesh.normalWS = TransformObjectToWorldNormal(inputMesh.normalOS);
+    // Not required but assign to silent compiler warning
+    output.vmesh.tangentWS = float4(1.0, 0.0, 0.0, 0.0);
 #endif
 
 #ifdef VARYINGS_NEED_TEXCOORD0