20 lines
583 B
Plaintext
20 lines
583 B
Plaintext
#pragma kernel Init
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#include "ErosionToolCommon.cginc"
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Texture2D<float4> _HeightMap;
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int _HeightMapResolution;
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float3 _TerrainSize;
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RWTexture2D<float4> _SimulationData; //r: current height, g: suspended sediment, b: last height, a: water level
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[numthreads(8, 1, 8)]
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void Init(uint3 id: SV_DISPATCHTHREADID)
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{
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float2 uv = id.xz / _TerrainSize.xz;
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float2 encHeight = SampleTextureBilinear(_HeightMap, _HeightMapResolution, _HeightMapResolution, uv).rg;
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float h = DecodeFloatRG(encHeight) * _TerrainSize.y;
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float4 data = float4(h, 0, h, 0);
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_SimulationData[id.xz] = data;
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} |