56 lines
1.6 KiB
Plaintext
56 lines
1.6 KiB
Plaintext
// Crest Water System
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// Copyright © 2024 Wave Harmonic. All rights reserved.
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#pragma kernel CrestExecute
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#include "HLSLSupport.cginc"
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#include "Packages/com.waveharmonic.crest/Runtime/Shaders/Library/Macros.hlsl"
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#include "Packages/com.waveharmonic.crest/Runtime/Shaders/Library/Constants.hlsl"
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#include "Packages/com.waveharmonic.crest/Runtime/Shaders/Library/Globals.hlsl"
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#include "Packages/com.waveharmonic.crest/Runtime/Shaders/Library/Helpers.hlsl"
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#include "Packages/com.waveharmonic.crest/Runtime/Shaders/Library/InputsDriven.hlsl"
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#include "Packages/com.waveharmonic.crest/Runtime/Shaders/Library/Cascade.hlsl"
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Texture2D _Crest_Texture;
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RWTexture2DArray<float3> _Crest_Target;
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CBUFFER_START(CrestPerMaterial)
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int _Crest_Blend;
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float _Crest_Weight;
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float4 _Crest_Multiplier;
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float2 _Crest_TextureSize;
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float2 _Crest_TexturePosition;
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float2 _Crest_TextureRotation;
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float _Crest_FeatherWidth;
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CBUFFER_END
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m_CrestNameSpace
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void Execute(uint3 id)
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{
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const Cascade cascade = Cascade::MakeAbsorption(id.z);
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const float2 uv = DataIDToInputUV(id.xy, cascade, _Crest_TexturePosition, _Crest_TextureRotation, _Crest_TextureSize);
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half weight = _Crest_Weight;
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// Feather boundaries.
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weight *= FeatherWeightFromUV(uv, _Crest_FeatherWidth);
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// Check we are within bounds.
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if (weight <= 0.0)
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{
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return;
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}
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const half4 source = _Crest_Texture.SampleLevel(LODData_linear_clamp_sampler, uv, 0) * _Crest_Multiplier;
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const half3 target = _Crest_Target[id];
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weight *= source.a;
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_Crest_Target[id] = Blend(_Crest_Blend, weight, 1.0, source.xyz, target);
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}
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m_CrestNameSpaceEnd
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m_CrestInputKernelDefault(Execute)
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