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Viewing changes to tests/bullet/src/BulletMultiThreaded/GpuSoftBodySolvers/OpenCL/OpenCLC/PrepareLinks.cl

  • Committer: Package Import Robot
  • Author(s): Sylvestre Ledru
  • Date: 2013-05-02 13:11:51 UTC
  • Revision ID: package-import@ubuntu.com-20130502131151-q8dvteqr1ef2x7xz
Tags: upstream-1.4.1~20130504~adb56cb
Import upstream version 1.4.1~20130504~adb56cb

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tests/bullet/src/BulletMultiThreaded/GpuSoftBodySolvers/OpenCL/OpenCLC/PrepareLinks.cl
 
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MSTRINGIFY(
 
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__kernel void 
 
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PrepareLinksKernel( 
 
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        const int numLinks,
 
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        __global int2 * g_linksVertexIndices,
 
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        __global float * g_linksMassLSC,
 
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        __global float4 * g_nodesPreviousPosition,
 
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        __global float * g_linksLengthRatio,
 
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        __global float4 * g_linksCurrentLength)
 
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{
 
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        int linkID = get_global_id(0);
 
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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 = 1.0f/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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);
 
 
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