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Diffstat (limited to 'extern/bullet2/BulletMultiThreaded/btGpuUtilsSharedCode.h')
-rw-r--r-- | extern/bullet2/BulletMultiThreaded/btGpuUtilsSharedCode.h | 55 |
1 files changed, 55 insertions, 0 deletions
diff --git a/extern/bullet2/BulletMultiThreaded/btGpuUtilsSharedCode.h b/extern/bullet2/BulletMultiThreaded/btGpuUtilsSharedCode.h new file mode 100644 index 00000000000..5761e7901ee --- /dev/null +++ b/extern/bullet2/BulletMultiThreaded/btGpuUtilsSharedCode.h @@ -0,0 +1,55 @@ +/* +Bullet Continuous Collision Detection and Physics Library, http://bulletphysics.org +Copyright (C) 2006, 2009 Sony Computer Entertainment 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. +*/ + +//---------------------------------------------------------------------------------------- + +// Shared code for GPU-based utilities + +//!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! +// Keep this file free from Bullet headers +// will be compiled by both CPU and CUDA compilers +// file with definitions of BT_GPU_xxx should be included first +//!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! + +//---------------------------------------------------------------------------------------- + +#include "btGpuUtilsSharedDefs.h" + +//---------------------------------------------------------------------------------------- + +extern "C" +{ + +//---------------------------------------------------------------------------------------- + +//Round a / b to nearest higher integer value +int BT_GPU_PREF(iDivUp)(int a, int b) +{ + return (a % b != 0) ? (a / b + 1) : (a / b); +} // iDivUp() + +//---------------------------------------------------------------------------------------- + +// compute grid and thread block size for a given number of elements +void BT_GPU_PREF(computeGridSize)(int n, int blockSize, int &numBlocks, int &numThreads) +{ + numThreads = BT_GPU_min(blockSize, n); + numBlocks = BT_GPU_PREF(iDivUp)(n, numThreads); +} // computeGridSize() + +//---------------------------------------------------------------------------------------- + +} // extern "C" + |