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BulletMultiThreaded optimization: remove some memory copy on non-SPU platforms, using cellDmaGetReadOnly.

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erwin.coumans
2008-12-12 22:28:16 +00:00
parent c541414c84
commit 4be20dc347
4 changed files with 254 additions and 239 deletions
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4
src/BulletMultiThreaded/SpuNarrowPhaseCollisionTask/SpuContactResult.cpp
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@@ -161,6 +161,9 @@ bool ManifoldResultAddContactPoint(const btVector3& normalOnBInWorld,
void SpuContactResult::writeDoubleBufferedManifold(btPersistentManifold* lsManifold, btPersistentManifold* mmManifold)
{
///only write back the contact information on SPU. Other platforms avoid copying, and use the data in-place
///see SpuFakeDma.cpp 'cellDmaLargeGetReadOnly'
#if defined (__SPU__) || defined (USE_LIBSPE2)
memcpy(g_manifoldDmaExport.getFront(),lsManifold,sizeof(btPersistentManifold));
g_manifoldDmaExport.swapBuffers();
@@ -168,6 +171,7 @@ void SpuContactResult::writeDoubleBufferedManifold(btPersistentManifold* lsManif
g_manifoldDmaExport.backBufferDmaPut(mmAddr, sizeof(btPersistentManifold), DMA_TAG(9));
// Should there be any kind of wait here? What if somebody tries to use this tag again? What if we call this function again really soon?
//no, the swapBuffers does the wait
#endif
}
void SpuContactResult::addContactPoint(const btVector3& normalOnBInWorld,const btVector3& pointInWorld,float depth)