Cleaning up FPTL early out for ps4 and PC (#6882)

* Changelog

Co-authored-by: sebastienlagarde <[email protected]>

Author: kecho

com.unity.render-pipelines.high-definition/Runtime/Lighting/LightLoop/lightlistbuild.compute

@@ -469,15 +469,15 @@ void FinePruneLights(uint threadID, int iNrCoarseLights, uint2 viTilLL, float vL
                 float2 V = abs( float2( dot(fromLight, lightData.lightAxisX.xyz), dot(fromLight, lightData.lightAxisY.xyz) ) );
 
                 float fDist2D = bIsSpotDisc ? length(V) : max(V.x,V.y);
-                bool isValid = all( float2(lightData.radiusSq, fSclProj) > float2(distSq, fDist2D*lightData.cotan) );
+                bool validInPixel = all( float2(lightData.radiusSq, fSclProj) > float2(distSq, fDist2D*lightData.cotan) );
 #ifdef PLATFORM_SUPPORTS_WAVE_INTRINSICS
                 //a wave is on the same tile, and the loop is uniform for the wave.
                 // thus we early out if at least 1 thread in the wave passed this light, saving some ALU.
-                lightValid = WaveActiveAnyTrue(isValid);
+                lightValid = WaveActiveAnyTrue(validInPixel);
 #else
-                lightValid = isValid;
+                lightValid = validInPixel;
 #endif
-                if (isValid)
+                if (lightValid)
                     break;
             }
         }
@@ -496,13 +496,13 @@ void FinePruneLights(uint threadID, int iNrCoarseLights, uint2 viTilLL, float vL
                 float3 toLight = vLp - vVPos;
                 float distSq = dot(toLight,toLight);
 
-                bool isValid = lightData.radiusSq>distSq;
+                bool validInPixel = lightData.radiusSq>distSq;
 #ifdef PLATFORM_SUPPORTS_WAVE_INTRINSICS
-                lightValid = WaveActiveAnyTrue(isValid);
+                lightValid = WaveActiveAnyTrue(validInPixel);
 #else
-                lightValid = isValid;
+                lightValid = validInPixel;
 #endif
-                if (isValid)
+                if (lightValid)
                     break;
            }
         }
@@ -521,13 +521,13 @@ void FinePruneLights(uint threadID, int iNrCoarseLights, uint2 viTilLL, float vL
 
                 float3 dist = float3( dot(toLight, lightData.lightAxisX), dot(toLight, lightData.lightAxisY), dot(toLight, lightData.lightAxisZ) );
                 dist = (abs(dist) - lightData.boxInnerDist) * lightData.boxInvRange;        // not as efficient as it could be
-                bool isValid = max(max(dist.x, dist.y), dist.z)<1;                       // but allows us to not write out OuterDists
+                bool validInPixel = max(max(dist.x, dist.y), dist.z)<1;                       // but allows us to not write out OuterDists
 #ifdef PLATFORM_SUPPORTS_WAVE_INTRINSICS
-                lightValid = WaveActiveAnyTrue(isValid);
+                lightValid = WaveActiveAnyTrue(validInPixel);
 #else
-                lightValid = isValid;
+                lightValid = validInPixel;
 #endif
-                if (isValid)
+                if (lightValid)
                     break;
             }
         }