33 lines
1.1 KiB
Plaintext
33 lines
1.1 KiB
Plaintext
import FluidGridData;
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struct Params
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{
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// read-write
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FluidGridData<float> velocityX;
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// read-write
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FluidGridData<float> velocityY;
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// read-write
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FluidGridData<float> velocityZ;
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// read-only
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FluidGridData<float> pressure;
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};
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ParameterBlock<Params> params;
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[shader("compute")]
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[numthreads(32, 8, 1)]
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void project(uint3 dispatchThreadID : SV_DispatchThreadID)
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{
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FluidGridData<float> velocityX = params.velocityX;
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FluidGridData<float> velocityY = params.velocityY;
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FluidGridData<float> velocityZ = params.velocityZ;
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FluidGridData<float> pressure = params.pressure;
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int x = dispatchThreadID.x + 1;
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int y = dispatchThreadID.y + 1;
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int z = dispatchThreadID.z + 1;
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if(x >= gridSize.x - 1 || y >= gridSize.y - 1 || z >= gridSize.z - 1) return;
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velocityX[x, y, z] -= 0.5f * (pressure[x + 1, y, z] - pressure[x - 1, y, z]) * gridSize.x;
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velocityY[x, y, z] -= 0.5f * (pressure[x, y + 1, z] - pressure[x, y - 1, z]) * gridSize.y;
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velocityZ[x, y, z] -= 0.5f * (pressure[x, y, z + 1] - pressure[x, y, z - 1]) * gridSize.z;
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} |