Hello,

I am trying to perform cloth simulations on GPU using Physx, however I have failed so far.I got a GTX 560 Ti, and an Intel i7.

When I clear the clothFlag eGPU on the cloth I am using, the simulation works fine, however when I set it, there is no simulation, and the cloth just stays the same.


I initialize the scene as following:

if(!sceneDesc.cpuDispatcher) {
PxDefaultCpuDispatcher* mCpuDispatcher = PxDefaultCpuDispatcherCreate(1);
if(!mCpuDispatcher)
cerr<<"PxDefaultCpuDispatcherCreate failed!"<<endl;
sceneDesc.cpuDispatcher = mCpuDispatcher;
}

pxtask::CudaContextManager* mCudaContextManager;
pxtask::CudaContextManagerDesc cudaContextManagerDesc;
mCudaContextManager = pxtask::createCudaContextManager(cudaContextManagerDesc, &gPhysicsSDK->getProfileZoneManager());


if (!sceneDesc.gpuDispatcher && mCudaContextManager )
{
printf("gpu dispatcher done!\n");
sceneDesc.gpuDispatcher = mCudaContextManager->getGpuDispatcher();
}
if(!sceneDesc.filterShader)
sceneDesc.filterShader = gDefaultFilterShader;

gScene = gPhysicsSDK->createScene(sceneDesc);

Create the cloth as following:

cloth = gPhysicsSDK->createCloth(tr,*fabric,points, cd, PxClothFlag::eSWEPT_CONTACT | PxClothFlag::eGPU);

And update the physx:

gScene->simulate(myTimestep,NULL,false);
while(!gScene->fetchResults() )
{}

I know for a fact from debugging that the GPU dispatcher is created.

Am I missing something? What do I need to do in order to enable GPU cloth simulation?

Thanks in advance.