101 lines
2.7 KiB
Plaintext
101 lines
2.7 KiB
Plaintext
Shader "Hidden/HDRP/Sky/GradientSky"
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{
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HLSLINCLUDE
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#pragma vertex Vert
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#pragma editor_sync_compilation
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#pragma target 4.5
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#pragma only_renderers d3d11 playstation xboxone xboxseries vulkan metal switch
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#include "Packages/com.unity.render-pipelines.core/ShaderLibrary/Common.hlsl"
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#include "Packages/com.unity.render-pipelines.core/ShaderLibrary/Color.hlsl"
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#include "Packages/com.unity.render-pipelines.core/ShaderLibrary/CommonLighting.hlsl"
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#include "Packages/com.unity.render-pipelines.high-definition/Runtime/ShaderLibrary/ShaderVariables.hlsl"
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#include "Packages/com.unity.render-pipelines.high-definition/Runtime/Sky/SkyUtils.hlsl"
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float4 _GradientBottom;
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float4 _GradientMiddle;
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float4 _GradientTop;
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float _GradientDiffusion;
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float _SkyIntensity;
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struct Attributes
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{
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uint vertexID : SV_VertexID;
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UNITY_VERTEX_INPUT_INSTANCE_ID
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};
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struct Varyings
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{
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float4 positionCS : SV_POSITION;
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UNITY_VERTEX_OUTPUT_STEREO
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};
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Varyings Vert(Attributes input)
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{
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Varyings output;
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UNITY_SETUP_INSTANCE_ID(input);
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UNITY_INITIALIZE_VERTEX_OUTPUT_STEREO(output);
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output.positionCS = GetFullScreenTriangleVertexPosition(input.vertexID, UNITY_RAW_FAR_CLIP_VALUE);
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return output;
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}
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float4 RenderSky(Varyings input)
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{
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float3 viewDirWS = GetSkyViewDirWS(input.positionCS.xy);
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float verticalGradient = viewDirWS.y * _GradientDiffusion;
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float topLerpFactor = saturate(-verticalGradient);
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float bottomLerpFactor = saturate(verticalGradient);
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float3 color = lerp(_GradientMiddle.xyz, _GradientBottom.xyz, bottomLerpFactor);
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color = lerp(color, _GradientTop.xyz, topLerpFactor);
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return float4(color * _SkyIntensity, 1.0);
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}
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float4 FragBaking(Varyings input) : SV_Target
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{
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return RenderSky(input);
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}
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float4 FragRender(Varyings input) : SV_Target
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{
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UNITY_SETUP_STEREO_EYE_INDEX_POST_VERTEX(input);
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float4 color = RenderSky(input);
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color.rgb *= GetCurrentExposureMultiplier();
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return color;
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}
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ENDHLSL
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SubShader
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{
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Tags{ "RenderPipeline" = "HDRenderPipeline" }
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Pass
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{
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ZWrite Off
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ZTest Always
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Blend Off
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Cull Off
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HLSLPROGRAM
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#pragma fragment FragBaking
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ENDHLSL
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}
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Pass
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{
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ZWrite Off
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ZTest LEqual
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Blend Off
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Cull Off
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HLSLPROGRAM
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#pragma fragment FragRender
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ENDHLSL
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}
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}
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Fallback Off
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}
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