refactor(HLSL): create namespaces for rest of hlsli (#761)

features/Skylighting/Shaders/Skylighting/Skylighting.hlsli

@@ -72,13 +72,13 @@ namespace Skylighting
 			float w = trilinearWeights.x * trilinearWeights.y * trilinearWeights.z * tangentWeight;
 
 			uint3 cellTexID = (cellID + params.ArrayOrigin.xyz) % ARRAY_DIM;
-			sh2 probe = shScale(probeArray[cellTexID], w);
+			sh2 probe = SphericalHarmonics::Scale(probeArray[cellTexID], w);
 
-			sum = shAdd(sum, probe);
+			sum = SphericalHarmonics::Add(sum, probe);
 			wsum += w;
 		}
 
-		return shScale(sum, rcp(wsum + 1e-10));
+		return SphericalHarmonics::Scale(sum, rcp(wsum + 1e-10));
 	}
 
 	float getVL(SkylightingSettings params, Texture3D<sh2> probeArray, float3 startPosWS, float3 endPosWS, float2 pxCoord)
@@ -102,7 +102,7 @@ namespace Skylighting
 
 				sh2 skylighting = Skylighting::sample(params, probeArray, samplePositionWS, float3(0, 0, 1));
 
-				shadow += Skylighting::mixDiffuse(params, shUnproject(skylighting, worldDirNormalised));
+				shadow += Skylighting::mixDiffuse(params, SphericalHarmonics::Unproject(skylighting, worldDirNormalised));
 			}
 			vl += shadow;
 		}
@@ -123,10 +123,10 @@ namespace Skylighting
 		float roughness2 = roughness * roughness;
 		float halfAngle = clamp(4.1679 * roughness2 * roughness2 - 9.0127 * roughness2 * roughness + 4.6161 * roughness2 + 1.7048 * roughness + 0.1, 0, Math::HALF_PI);
 		float lerpFactor = halfAngle / Math::HALF_PI;
-		sh2 directional = shEvaluate(dominantDir);
-		sh2 cosineLobe = shEvaluateCosineLobe(dominantDir) / Math::PI;
-		sh2 result = shAdd(shScale(directional, lerpFactor), shScale(cosineLobe, 1 - lerpFactor));
+		sh2 directional = SphericalHarmonics::Evaluate(dominantDir);
+		sh2 cosineLobe = SphericalHarmonics::EvaluateCosineLobe(dominantDir) / Math::PI;
+		sh2 result = SphericalHarmonics::Add(SphericalHarmonics::Scale(directional, lerpFactor), SphericalHarmonics::Scale(cosineLobe, 1 - lerpFactor));
 
 		return result;
 	}
-}
+}

features/Skylighting/Shaders/Skylighting/UpdateProbesCS.hlsl

@@ -30,13 +30,13 @@ SamplerState samplerPointClamp : register(s0);
 			float occlusionDepth = srcOcclusionDepth.SampleLevel(samplerPointClamp, occlusionUV, 0);
 			float visibility = saturate((occlusionDepth + 0.0005 - cellCentreOS.z) * 1024);
 
-			sh2 occlusionSH = shScale(shEvaluate(settings.OcclusionDir.xyz), visibility * 4.0 * Math::PI);  // 4 pi from monte carlo
+			sh2 occlusionSH = SphericalHarmonics::Scale(SphericalHarmonics::Evaluate(settings.OcclusionDir.xyz), visibility * 4.0 * Math::PI);  // 4 pi from monte carlo
 			if (isValid) {
 				float lerpFactor = rcp(accumFrames);
 				sh2 prevProbeSH = unitSH;
 				if (accumFrames > 1)
 					prevProbeSH += (outProbeArray[dtid] - unitSH) * fadeInThreshold / min(fadeInThreshold, accumFrames - 1);  // inverse confidence
-				occlusionSH = shAdd(shScale(prevProbeSH, 1 - lerpFactor), shScale(occlusionSH, lerpFactor));
+				occlusionSH = SphericalHarmonics::Add(SphericalHarmonics::Scale(prevProbeSH, 1 - lerpFactor), SphericalHarmonics::Scale(occlusionSH, lerpFactor));
 			}
 			occlusionSH = lerp(unitSH, occlusionSH, min(fadeInThreshold, accumFrames) / fadeInThreshold);  // confidence fade in
 

package/Shaders/AmbientCompositeCS.hlsl

@@ -67,7 +67,7 @@ RWTexture2D<half3> DiffuseAmbientRW : register(u1);
 #	endif
 
 	sh2 skylighting = Skylighting::sample(skylightingSettings, SkylightingProbeArray, positionMS.xyz, normalWS);
-	half skylightingDiffuse = shFuncProductIntegral(skylighting, shEvaluateCosineLobe(float3(normalWS.xy, normalWS.z * 0.5 + 0.5))) / Math::PI;
+	half skylightingDiffuse = SphericalHarmonics::FuncProductIntegral(skylighting, SphericalHarmonics::EvaluateCosineLobe(float3(normalWS.xy, normalWS.z * 0.5 + 0.5))) / Math::PI;
 	skylightingDiffuse = Skylighting::mixDiffuse(skylightingSettings, skylightingDiffuse);
 
 	visibility = skylightingDiffuse;