32 lines
709 B
Plaintext
32 lines
709 B
Plaintext
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import FluidGridData;
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struct Params
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{
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FluidGridData<float> density;
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};
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ParameterBlock<Params> params;
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struct VertexOut
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{
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float4 position : SV_Position;
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float2 uv : UV;
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};
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[shader("vertex")]
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VertexOut vertexMain(uint vertexId : SV_VertexID)
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{
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VertexOut output;
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output.uv = float2((vertexId << 1) & 2, vertexId & 2);
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output.position = float4(output.uv * 2.0f - 1.0f, 0, 1);
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return output;
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}
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[shader("pixel")]
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float4 fragmentMain(VertexOut input) : SV_Target
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{
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FluidGridData<float> density = params.density;
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int x = int(input.uv.x * (gridSize.x - 2) + 1);
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int y = int(input.uv.y * (gridSize.y - 2) + 1);
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float d = density[x, y, 0];
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return float4(d, d, d, 1);
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}
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