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44 lines
1.9 KiB
44 lines
1.9 KiB
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#pragma kernel MainUploadScatterInstances
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//#pragma enable_d3d11_debug_symbols
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int _InputValidComponentCounts;
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int _InputInstanceCounts;
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int _InputInstanceByteSize;
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ByteAddressBuffer _InputInstanceData;
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ByteAddressBuffer _InputInstanceIndices;
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ByteAddressBuffer _InputComponentOffsets;
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ByteAddressBuffer _InputValidComponentIndices;
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ByteAddressBuffer _InputComponentAddresses;
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ByteAddressBuffer _InputComponentByteCounts;
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ByteAddressBuffer _InputComponentInstanceIndexRanges;
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RWByteAddressBuffer _OutputBuffer;
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[numthreads(64,1,1)]
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void MainUploadScatterInstances(uint3 dispatchThreadID : SV_DispatchThreadID)
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{
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uint instanceOffset = dispatchThreadID.x;
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if (instanceOffset >= (uint)_InputInstanceCounts)
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return;
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uint instanceIndex = _InputInstanceIndices.Load(instanceOffset << 2);
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[loop]
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for (int validComponentIndex = 0; validComponentIndex < _InputValidComponentCounts; ++validComponentIndex)
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{
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uint componentIndex = _InputValidComponentIndices.Load(validComponentIndex << 2);
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uint instanceIndexBegin = _InputComponentInstanceIndexRanges.Load(componentIndex * 8);
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uint instanceIndexEnd = _InputComponentInstanceIndexRanges.Load(componentIndex * 8 + 4);
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if (instanceIndex < instanceIndexBegin || instanceIndex >= instanceIndexEnd)
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continue;
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uint inputComponentOffset = _InputComponentOffsets.Load(componentIndex << 2);
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uint componentAddress = _InputComponentAddresses.Load(componentIndex << 2);
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uint componentByteSize = _InputComponentByteCounts.Load(componentIndex << 2);
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for (uint uintIndex = 0; uintIndex < componentByteSize / 4u; ++uintIndex)
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{
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uint outputAddress = componentAddress + instanceIndex * componentByteSize + uintIndex * 4;
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_OutputBuffer.Store(outputAddress, _InputInstanceData.Load(instanceOffset * _InputInstanceByteSize + (inputComponentOffset + uintIndex) * 4));
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}
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}
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}
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