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Add the GPU rigid body pipeline from https://github.com/erwincoumans/experiments as a Bullet 3.x preview for Bullet 2.80

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erwin.coumans
2012-03-05 00:54:32 +00:00
parent 73c4646b40
commit 571af41cf6
257 changed files with 55106 additions and 0 deletions
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125
Extras/RigidBodyGpuPipeline/opencl/primitives/AdlPrimitives/Scan/PrefixScan.inl Normal file
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/*
Copyright (c) 2012 Advanced Micro Devices, Inc.
This software is provided 'as-is', without any express or implied warranty.
In no event will the authors be held liable for any damages arising from the use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it freely,
subject to the following restrictions:
1. The origin of this software must not be misrepresented; you must not claim that you wrote the original software. If you use this software in a product, an acknowledgment in the product documentation would be appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not be misrepresented as being the original software.
3. This notice may not be removed or altered from any source distribution.
*/
//Originally written by Takahiro Harada
#define PATH "..\\..\\opencl\\primitives\\AdlPrimitives\\Scan\\PrefixScanKernels"
#define KERNEL0 "LocalScanKernel"
#define KERNEL1 "TopLevelScanKernel"
#define KERNEL2 "AddOffsetKernel"
#include <AdlPrimitives/Scan/PrefixScanKernelsCL.h>
#include <AdlPrimitives/Scan/PrefixScanKernelsDX11.h>
template<DeviceType TYPE>
typename PrefixScan<TYPE>::Data* PrefixScan<TYPE>::allocate(const Device* device, int maxSize, Option option)
{
ADLASSERT( TYPE == device->m_type );
ADLASSERT( maxSize <= BLOCK_SIZE*2*2048 );
const char* src[] =
#if defined(ADL_LOAD_KERNEL_FROM_STRING)
{prefixScanKernelsCL, prefixScanKernelsDX11};
#else
{0,0};
#endif
Data* data = new Data;
data->m_device = device;
data->m_localScanKernel = device->getKernel( PATH, KERNEL0, 0, src[TYPE] );
data->m_blockSumKernel = device->getKernel( PATH, KERNEL1, 0, src[TYPE] );
data->m_propagationKernel = device->getKernel( PATH, KERNEL2, 0, src[TYPE] );
int bufSize = (NEXTMULTIPLEOF( max2( maxSize/BLOCK_SIZE, (int)BLOCK_SIZE ), BLOCK_SIZE )+1);
data->m_workBuffer = new Buffer<u32>( device, bufSize );
data->m_constBuffer[0] = new Buffer<int4>( device, 1, BufferBase::BUFFER_CONST );
data->m_constBuffer[1] = new Buffer<int4>( device, 1, BufferBase::BUFFER_CONST );
data->m_constBuffer[2] = new Buffer<int4>( device, 1, BufferBase::BUFFER_CONST );
data->m_maxSize = maxSize;
data->m_option = option;
return data;
}
template<DeviceType TYPE>
void PrefixScan<TYPE>::deallocate(Data* data)
{
delete data->m_workBuffer;
delete data->m_constBuffer[0];
delete data->m_constBuffer[1];
delete data->m_constBuffer[2];
delete data;
}
template<DeviceType TYPE>
void PrefixScan<TYPE>::execute(Data* data, Buffer<u32>& src, Buffer<u32>& dst, int n, u32* sum)
{
ADLASSERT( data );
ADLASSERT( n <= data->m_maxSize );
ADLASSERT( data->m_option == EXCLUSIVE );
const u32 numBlocks = u32( (n+BLOCK_SIZE*2-1)/(BLOCK_SIZE*2) );
int4 constBuffer;
constBuffer.x = n;
constBuffer.y = numBlocks;
constBuffer.z = (int)nextPowerOf2( numBlocks );
Buffer<u32>* srcNative = BufferUtils::map<TYPE, true>( data->m_device, &src );
Buffer<u32>* dstNative = BufferUtils::map<TYPE, false>( data->m_device, &dst );
{
BufferInfo bInfo[] = { BufferInfo( dstNative ), BufferInfo( srcNative ), BufferInfo( data->m_workBuffer ) };
Launcher launcher( data->m_device, data->m_localScanKernel );
launcher.setBuffers( bInfo, sizeof(bInfo)/sizeof(Launcher::BufferInfo) );
launcher.setConst( *data->m_constBuffer[0], constBuffer );
launcher.launch1D( numBlocks*BLOCK_SIZE, BLOCK_SIZE );
}
{
BufferInfo bInfo[] = { BufferInfo( data->m_workBuffer ) };
Launcher launcher( data->m_device, data->m_blockSumKernel );
launcher.setBuffers( bInfo, sizeof(bInfo)/sizeof(Launcher::BufferInfo) );
launcher.setConst( *data->m_constBuffer[1], constBuffer );
launcher.launch1D( BLOCK_SIZE, BLOCK_SIZE );
}
if( numBlocks > 1 )
{
BufferInfo bInfo[] = { BufferInfo( dstNative ), BufferInfo( data->m_workBuffer ) };
Launcher launcher( data->m_device, data->m_propagationKernel );
launcher.setBuffers( bInfo, sizeof(bInfo)/sizeof(Launcher::BufferInfo) );
launcher.setConst( *data->m_constBuffer[2], constBuffer );
launcher.launch1D( (numBlocks-1)*BLOCK_SIZE, BLOCK_SIZE );
}
DeviceUtils::waitForCompletion( data->m_device );
if( sum )
{
dstNative->read( sum, 1, n-1);
}
DeviceUtils::waitForCompletion( data->m_device );
BufferUtils::unmap<false>( srcNative, &src );
BufferUtils::unmap<true>( dstNative, &dst );
}
#undef PATH
#undef KERNEL0
#undef KERNEL1
#undef KERNEL2