fix refl shader compile errors due to roughness/perceptualRoughness

fix refl shader compile errors due to roughness/perceptualRoughness

Assets/ScriptableRenderLoop/fptl/Internal-DeferredReflections.shader

 				sampleDir = worldNormalRefl;
 
 			Unity_GlossyEnvironmentData g;
-			g.roughness = SmoothnessToPerceptualRoughness(data.smoothness);
+			g.perceptualRoughness = SmoothnessToPerceptualRoughness(data.smoothness);
 			g.reflUVW		= sampleDir;
 
 			half3 env0 = Unity_GlossyEnvironment(UNITY_PASS_TEXCUBEARRAY(_reflCubeTextures), lgtDat.iSliceIndex, float4(lgtDat.fLightIntensity, lgtDat.fDecodeExp, 0.0, 0.0), g);
 {
 #if UNITY_GLOSS_MATCHES_MARMOSET_TOOLBAG2 && (SHADER_TARGET >= 30)
 	// TODO: remove pow, store cubemap mips differently
-	half roughness = pow(glossIn.perceptualRoughness, 3.0/4.0);
+	half perceptualRoughness = pow(glossIn.perceptualRoughness, 3.0/4.0);
-	half roughness = glossIn.roughness;			// MM: switched to this
+	half perceptualRoughness = glossIn.perceptualRoughness;			// MM: switched to this
-	//roughness = sqrt(sqrt(2/(64.0+2)));		// spec power to the square root of real roughness
+	//perceptualRoughness = sqrt(sqrt(2/(64.0+2)));		// spec power to the square root of real roughness
-	float m = roughness*roughness;				// m is the real roughness parameter
+	float m = perceptualRoughness*perceptualRoughness;				// m is the real roughness parameter
-	roughness = pow( 2/(n+2), 0.25);			// remap back to square root of real roughness
+	perceptualRoughness = pow( 2/(n+2), 0.25);			// remap back to square root of real roughness
-	roughness = roughness*(1.7 - 0.7*roughness);
+	perceptualRoughness = perceptualRoughness*(1.7 - 0.7*perceptualRoughness);
-	half mip = roughness * UNITY_SPECCUBE_LOD_STEPS;
+	half mip = perceptualRoughness * UNITY_SPECCUBE_LOD_STEPS;
 	half4 rgbm = UNITY_SAMPLE_TEXCUBEARRAY_LOD(tex, float4(glossIn.reflUVW.xyz, sliceIndex), mip);
 
 	//return rgbm.xyz;