11fa2e8b43
See also http://code.google.com/p/bullet/issues/detail?id=390 Added Demos/DX11ClothDemo (an OpenCL cloth demo will follow soon)
44 lines
1.3 KiB
HLSL
44 lines
1.3 KiB
HLSL
MSTRINGIFY(
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cbuffer PrepareLinksCB : register( b0 )
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{
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int numLinks;
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int padding0;
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int padding1;
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int padding2;
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};
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// Node indices for each link
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StructuredBuffer<int2> g_linksVertexIndices : register( t0 );
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StructuredBuffer<float> g_linksMassLSC : register( t1 );
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StructuredBuffer<float4> g_nodesPreviousPosition : register( t2 );
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RWStructuredBuffer<float> g_linksLengthRatio : register( u0 );
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RWStructuredBuffer<float4> g_linksCurrentLength : register( u1 );
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[numthreads(128, 1, 1)]
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void
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PrepareLinksKernel( uint3 Gid : SV_GroupID, uint3 DTid : SV_DispatchThreadID, uint3 GTid : SV_GroupThreadID, uint GI : SV_GroupIndex )
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{
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int linkID = DTid.x;
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if( linkID < numLinks )
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{
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int2 nodeIndices = g_linksVertexIndices[linkID];
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int node0 = nodeIndices.x;
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int node1 = nodeIndices.y;
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float4 nodePreviousPosition0 = g_nodesPreviousPosition[node0];
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float4 nodePreviousPosition1 = g_nodesPreviousPosition[node1];
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float massLSC = g_linksMassLSC[linkID];
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float4 linkCurrentLength = nodePreviousPosition1 - nodePreviousPosition0;
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float linkLengthRatio = dot(linkCurrentLength, linkCurrentLength)*massLSC;
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linkLengthRatio = 1./linkLengthRatio;
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g_linksCurrentLength[linkID] = linkCurrentLength;
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g_linksLengthRatio[linkID] = linkLengthRatio;
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}
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}
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); |