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Added GPU SoftBody constraint solvers for DirectX 11 (Direct Compute) and OpenCL, thanks to AMD.

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See also http://code.google.com/p/bullet/issues/detail?id=390
Added Demos/DX11ClothDemo
(an OpenCL cloth demo will follow soon)
This commit is contained in:
erwin.coumans
2010-07-20 16:09:53 +00:00
parent 5fd08505ba
commit 11fa2e8b43
99 changed files with 117195 additions and 0 deletions
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41
src/BulletMultiThreaded/GpuSoftBodySolvers/DX11/HLSL/Integrate.hlsl Normal file
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MSTRINGIFY(
cbuffer IntegrateCB : register( b0 )
{
int numNodes;
float solverdt;
int padding1;
int padding2;
};
// Node indices for each link
StructuredBuffer<float> g_vertexInverseMasses : register( t0 );
RWStructuredBuffer<float4> g_vertexPositions : register( u0 );
RWStructuredBuffer<float4> g_vertexVelocity : register( u1 );
RWStructuredBuffer<float4> g_vertexPreviousPositions : register( u2 );
RWStructuredBuffer<float4> g_vertexForceAccumulator : register( u3 );
[numthreads(128, 1, 1)]
void
IntegrateKernel( uint3 Gid : SV_GroupID, uint3 DTid : SV_DispatchThreadID, uint3 GTid : SV_GroupThreadID, uint GI : SV_GroupIndex )
{
int nodeID = DTid.x;
if( nodeID < numNodes )
{
float3 position = g_vertexPositions[nodeID].xyz;
float3 velocity = g_vertexVelocity[nodeID].xyz;
float3 force = g_vertexForceAccumulator[nodeID].xyz;
float inverseMass = g_vertexInverseMasses[nodeID];
g_vertexPreviousPositions[nodeID] = float4(position, 0.f);
velocity += force * inverseMass * solverdt;
position += velocity * solverdt;
g_vertexForceAccumulator[nodeID] = float4(0.f, 0.f, 0.f, 0.0f);
g_vertexPositions[nodeID] = float4(position, 0.f);
g_vertexVelocity[nodeID] = float4(velocity, 0.f);
}
}
);