91 lines
2.8 KiB
HLSL
91 lines
2.8 KiB
HLSL
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//Set this to value to 1 through Shader.SetGlobalFloat to temporarily disable fog for water
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float _WaterFogDisabled;
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//Authors of third-party fog solutions can reach out to have their method integrated here
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#ifdef SCPostEffects
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//Macros normally used for cross-RP compatibility
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#define LINEAR_DEPTH(depth) Linear01Depth(depth, _ZBufferParams)
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//Legacy (pre v2.2.1)
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#define DECLARE_TEX(textureName) TEXTURE2D(textureName);
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#define DECLARE_RT(textureName) TEXTURE2D_X(textureName);
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#define SAMPLE_TEX(textureName, samplerName, uv) SAMPLE_TEXTURE2D_LOD(textureName, samplerName, uv, 0)
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#define SAMPLE_RT_LOD(textureName, samplerName, uv, mip) SAMPLE_TEXTURE2D_X_LOD(textureName, samplerName, uv, mip)
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#endif
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#ifdef AtmosphericHeightFog
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//For versions older than 3.2.0, uncomment this
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//bool AHF_Enabled;
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#endif
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//Fragment stage. Note: Screen position passed here is not normalized (divided by w-component)
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void ApplyFog(inout float3 color, float fogFactor, float4 screenPos, float3 positionWS, float vFace)
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{
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float3 foggedColor = color;
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#ifdef UnityFog
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foggedColor = MixFog(color.rgb, fogFactor);
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#endif
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#ifdef Colorful
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if(_DensityParams.x > 0) foggedColor.rgb = ApplyFog(color.rgb, fogFactor, positionWS, screenPos.xy / screenPos.w);
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#endif
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#ifdef Enviro
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//Distance/height fog enabled?
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if (_EnviroParams.y > 0 || _EnviroParams.z > 0)
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{
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foggedColor.rgb = TransparentFog(float4(color.rgb, 1.0), positionWS, screenPos.xy / screenPos.w, fogFactor).rgb;
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}
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#endif
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#ifdef Enviro3
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if(any(_EnviroFogParameters) > 0)
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{
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foggedColor.rgb = ApplyFogAndVolumetricLights(color.rgb, screenPos.xy / screenPos.w, positionWS, 0);
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}
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#endif
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#ifdef Azure
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foggedColor.rgb = ApplyAzureFog(float4(color.rgb, 1.0), positionWS).rgb;
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#endif
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#ifdef AtmosphericHeightFog
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if (AHF_Enabled)
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{
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float4 fogParams = GetAtmosphericHeightFog(positionWS.xyz);
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foggedColor.rgb = lerp(color.rgb, fogParams.rgb, fogParams.a);
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}
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#endif
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#ifdef SCPostEffects
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//Distance or height fog enabled
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if(_DistanceParams.z == 1 || _DistanceParams.w == 1)
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{
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ApplyTransparencyFog(positionWS, screenPos.xy / screenPos.w, foggedColor.rgb);
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}
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#endif
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#ifdef COZY
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foggedColor = BlendStylizedFog(positionWS, float4(color.rgb, 1.0)).rgb;
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#endif
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#ifdef Buto
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#if defined(BUTO_API_VERSION_2) //Buto 2022
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float3 positionVS = TransformWorldToView(positionWS);
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foggedColor = ButoFogBlend(screenPos.xy / screenPos.w, -positionVS.z, color.rgb);
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#else //Buto 2021
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foggedColor = ButoFogBlend(screenPos.xy / screenPos.w, color.rgb);
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#endif
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#endif
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#ifndef UnityFog
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//Allow fog to be disabled for water globally by setting the value through script
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foggedColor = lerp(foggedColor, color, _WaterFogDisabled);
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#endif
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//Fog only applies to the front faces, otherwise affects underwater rendering
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color.rgb = lerp(color.rgb, foggedColor.rgb, vFace);
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}
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