11fa2e8b43
See also http://code.google.com/p/bullet/issues/detail?id=390 Added Demos/DX11ClothDemo (an OpenCL cloth demo will follow soon)
41 lines
1.2 KiB
HLSL
41 lines
1.2 KiB
HLSL
MSTRINGIFY(
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cbuffer IntegrateCB : register( b0 )
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{
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int numNodes;
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float solverdt;
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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<float> g_vertexInverseMasses : register( t0 );
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RWStructuredBuffer<float4> g_vertexPositions : register( u0 );
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RWStructuredBuffer<float4> g_vertexVelocity : register( u1 );
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RWStructuredBuffer<float4> g_vertexPreviousPositions : register( u2 );
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RWStructuredBuffer<float4> g_vertexForceAccumulator : register( u3 );
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[numthreads(128, 1, 1)]
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void
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IntegrateKernel( 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 nodeID = DTid.x;
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if( nodeID < numNodes )
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{
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float3 position = g_vertexPositions[nodeID].xyz;
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float3 velocity = g_vertexVelocity[nodeID].xyz;
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float3 force = g_vertexForceAccumulator[nodeID].xyz;
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float inverseMass = g_vertexInverseMasses[nodeID];
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g_vertexPreviousPositions[nodeID] = float4(position, 0.f);
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velocity += force * inverseMass * solverdt;
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position += velocity * solverdt;
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g_vertexForceAccumulator[nodeID] = float4(0.f, 0.f, 0.f, 0.0f);
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g_vertexPositions[nodeID] = float4(position, 0.f);
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g_vertexVelocity[nodeID] = float4(velocity, 0.f);
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}
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}
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); |