64 lines
1.6 KiB
Plaintext
64 lines
1.6 KiB
Plaintext
// Crest Water System
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// Copyright © 2024 Wave Harmonic. All rights reserved.
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#pragma exclude_renderers glcore gles3
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#pragma kernel BlurHorizontal
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#pragma kernel BlurVertical
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#pragma multi_compile_local d_Float1 d_Float2 d_Float3 d_Float4
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#if d_Float1
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#define m_Type float
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#elif d_Float2
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#define m_Type float2
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#elif d_Float3
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#define m_Type float3
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#elif d_Float4
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#define m_Type float4
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#endif
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Texture2DArray<m_Type> _Crest_Source;
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RWTexture2DArray<m_Type> _Crest_Target;
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// (width, height, slices)
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uint _Crest_Resolution;
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// 5-tap Gaussian (sigma ≈ 1)
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static const float w0 = 0.4026;
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static const float w1 = 0.2442;
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static const float w2 = 0.0545;
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uint2 ClampXY(uint2 p)
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{
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return clamp(p, 0, _Crest_Resolution - 1);
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}
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[numthreads(8, 8, 1)]
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void BlurHorizontal(uint3 id : SV_DispatchThreadID)
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{
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const int3 p = int3(id.x, id.y, id.z);
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const int2 xy = p.xy;
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_Crest_Target[p] =
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_Crest_Source[id] * w0 +
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_Crest_Source[uint3(ClampXY(xy + int2( 1, 0)), p.z)] * w1 +
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_Crest_Source[uint3(ClampXY(xy + int2(-1, 0)), p.z)] * w1 +
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_Crest_Source[uint3(ClampXY(xy + int2( 2, 0)), p.z)] * w2 +
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_Crest_Source[uint3(ClampXY(xy + int2(-2, 0)), p.z)] * w2;
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}
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[numthreads(8, 8, 1)]
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void BlurVertical(uint3 id : SV_DispatchThreadID)
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{
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const int3 p = int3(id.x, id.y, id.z);
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const int2 xy = p.xy;
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_Crest_Target[p] =
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_Crest_Source[id] * w0 +
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_Crest_Source[uint3(ClampXY(xy + int2(0, 1)), p.z)] * w1 +
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_Crest_Source[uint3(ClampXY(xy + int2(0, -1)), p.z)] * w1 +
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_Crest_Source[uint3(ClampXY(xy + int2(0, 2)), p.z)] * w2 +
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_Crest_Source[uint3(ClampXY(xy + int2(0, -2)), p.z)] * w2;
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}
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