refactor: add namespace for CloudShadows

doodlum · Aug 18, 2024 · b2db46f · b2db46f
1 parent 421c74b
commit b2db46f
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Showing 5 changed files with 21 additions and 18 deletions.
diff --git a/features/Cloud Shadows/Shaders/CloudShadows/CloudShadows.hlsli b/features/Cloud Shadows/Shaders/CloudShadows/CloudShadows.hlsli
@@ -5,20 +5,23 @@ TextureCube<float4> cloudShadowsTexture : register(t27);
 #define PlanetRadius (6371e3f / 1.428e-2)
 #define RcpHPlusR (1.0 / (CloudHeight + PlanetRadius))
 
-float3 GetCloudShadowSampleDir(float3 rel_pos, float3 eye_to_sun)
+namespace CloudShadows
 {
-	float r = PlanetRadius;
-	float3 p = (rel_pos + float3(0, 0, r)) * RcpHPlusR;
-	float dotprod = dot(p, eye_to_sun);
-	float lengthsqr = dot(p, p);
-	float t = -dotprod + sqrt(dotprod * dotprod - dot(p, p) + 1);
-	float3 v = (p + eye_to_sun * t) * (r + CloudHeight) - float3(0, 0, r);
-	return v;
-}
+	float3 GetCloudShadowSampleDir(float3 rel_pos, float3 eye_to_sun)
+	{
+		float r = PlanetRadius;
+		float3 p = (rel_pos + float3(0, 0, r)) * RcpHPlusR;
+		float dotprod = dot(p, eye_to_sun);
+		float lengthsqr = dot(p, p);
+		float t = -dotprod + sqrt(dotprod * dotprod - dot(p, p) + 1);
+		float3 v = (p + eye_to_sun * t) * (r + CloudHeight) - float3(0, 0, r);
+		return v;
+	}
 
-float3 GetCloudShadowMult(float3 worldPosition, SamplerState textureSampler)
-{
-	float3 cloudSampleDir = GetCloudShadowSampleDir(worldPosition, DirLightDirectionShared.xyz).xyz;
-	float cloudCubeSample = cloudShadowsTexture.SampleLevel(textureSampler, cloudSampleDir, 0).w;
-	return 1.0 - saturate(cloudCubeSample);
+	float3 GetCloudShadowMult(float3 worldPosition, SamplerState textureSampler)
+	{
+		float3 cloudSampleDir = GetCloudShadowSampleDir(worldPosition, DirLightDirectionShared.xyz).xyz;
+		float cloudCubeSample = cloudShadowsTexture.SampleLevel(textureSampler, cloudSampleDir, 0).w;
+		return 1.0 - saturate(cloudCubeSample);
+	}
 }
diff --git a/package/Shaders/Common/ShadowSampling.hlsli b/package/Shaders/Common/ShadowSampling.hlsli
@@ -136,7 +136,7 @@ float3 GetWorldShadow(float3 positionWS, float depth, float3 offset, uint eyeInd
 #endif
 
 #if defined(CLOUD_SHADOWS)
-	worldShadow *= GetCloudShadowMult(positionWS + offset, LinearSampler);
+	worldShadow *= CloudShadows::GetCloudShadowMult(positionWS + offset, LinearSampler);
 	if (worldShadow == 0.0)
 		return 0.0;
 #endif

diff --git a/package/Shaders/DistantTree.hlsl b/package/Shaders/DistantTree.hlsl
@@ -229,7 +229,7 @@ PS_OUTPUT main(PS_INPUT input)
 
 #			if defined(CLOUD_SHADOWS)
 	if (dirShadow > 0.0) {
-		dirShadow *= GetCloudShadowMult(input.WorldPosition, SampDiffuse);
+		dirShadow *= CloudShadows::GetCloudShadowMult(input.WorldPosition, SampDiffuse);
 	}
 #			endif
 

diff --git a/package/Shaders/Lighting.hlsl b/package/Shaders/Lighting.hlsl
@@ -1956,7 +1956,7 @@ PS_OUTPUT main(PS_INPUT input, bool frontFace
 
 #	if defined(CLOUD_SHADOWS)
 	if (!inDirShadow) {
-		dirShadow *= GetCloudShadowMult(input.WorldPosition.xyz, SampColorSampler);
+		dirShadow *= CloudShadows::GetCloudShadowMult(input.WorldPosition.xyz, SampColorSampler);
 	}
 #	endif
 

diff --git a/package/Shaders/RunGrass.hlsl b/package/Shaders/RunGrass.hlsl
@@ -528,7 +528,7 @@ PS_OUTPUT main(PS_INPUT input, bool frontFace
 
 #			if defined(CLOUD_SHADOWS)
 		if (dirShadow != 0.0) {
-			dirShadow *= GetCloudShadowMult(input.WorldPosition.xyz, SampBaseSampler);
+			dirShadow *= CloudShadows::GetCloudShadowMult(input.WorldPosition.xyz, SampBaseSampler);
 		}
 #			endif  // CLOUD_SHADOWS
 	}