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Add support to serialize btOptimizedBvh/btQuantizedBvh for a btBvhTriangleMeshShape (using the new btSerializer). This is a new implementation, with full cross-platform support.

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So it is different from the in-place method (btQuantizedBvh::serializeInPlace/deserializeInPlace).

It is also possible to serialize/deserialize just the bvh, using the btSerializer (needs some code snippet/helper)
See also http://bulletphysics.org/Bullet/phpBB3/viewtopic.php?f=9&t=4770
This commit is contained in:
erwin.coumans
2010-02-23 09:03:46 +00:00
parent e4c3c2a1a2
commit 41e9115bca
15 changed files with 929 additions and 451 deletions
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106
src/BulletCollision/BroadphaseCollision/btQuantizedBvh.h
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@@ -16,6 +16,8 @@ subject to the following restrictions:
#ifndef QUANTIZED_BVH_H
#define QUANTIZED_BVH_H
class btSerializer;
//#define DEBUG_CHECK_DEQUANTIZATION 1
#ifdef DEBUG_CHECK_DEQUANTIZATION
#ifdef __SPU__
@@ -29,6 +31,17 @@ subject to the following restrictions:
#include "LinearMath/btVector3.h"
#include "LinearMath/btAlignedAllocator.h"
#ifdef BT_USE_DOUBLE_PRECISION
#define btQuantizedBvhData btQuantizedBvhDoubleData
#define btOptimizedBvhNodeData btOptimizedBvhNodeDoubleData
#define btQuantizedBvhDataName "btQuantizedBvhDoubleData"
#else
#define btQuantizedBvhData btQuantizedBvhFloatData
#define btOptimizedBvhNodeData btOptimizedBvhNodeFloatData
#define btQuantizedBvhDataName "btQuantizedBvhFloatData"
#endif
//http://msdn.microsoft.com/library/default.asp?url=/library/en-us/vclang/html/vclrf__m128.asp
@@ -443,6 +456,7 @@ public:
return m_SubtreeHeaders;
}
////////////////////////////////////////////////////////////////////
/////Calculate space needed to store BVH for serialization
unsigned calculateSerializeBufferSize() const;
@@ -454,6 +468,20 @@ public:
static btQuantizedBvh *deSerializeInPlace(void *i_alignedDataBuffer, unsigned int i_dataBufferSize, bool i_swapEndian);
static unsigned int getAlignmentSerializationPadding();
//////////////////////////////////////////////////////////////////////
virtual int calculateSerializeBufferSizeNew() const;
///fills the dataBuffer and returns the struct name (and 0 on failure)
virtual const char* serialize(void* dataBuffer, btSerializer* serializer) const;
virtual void deSerializeFloat(struct btQuantizedBvhFloatData& quantizedBvhFloatData);
virtual void deSerializeDouble(struct btQuantizedBvhDoubleData& quantizedBvhDoubleData);
////////////////////////////////////////////////////////////////////
SIMD_FORCE_INLINE bool isQuantized()
{
@@ -470,4 +498,82 @@ private:
;
struct btBvhSubtreeInfoData
{
int m_rootNodeIndex;
int m_subtreeSize;
unsigned short int m_quantizedAabbMin[3];
unsigned short int m_quantizedAabbMax[3];
};
struct btOptimizedBvhNodeFloatData
{
btVector3FloatData m_aabbMinOrg;
btVector3FloatData m_aabbMaxOrg;
int m_escapeIndex;
int m_subPart;
int m_triangleIndex;
};
struct btOptimizedBvhNodeDoubleData
{
btVector3DoubleData m_aabbMinOrg;
btVector3DoubleData m_aabbMaxOrg;
int m_escapeIndex;
int m_subPart;
int m_triangleIndex;
};
struct btQuantizedBvhNodeData
{
int m_escapeIndexOrTriangleIndex;
unsigned short int m_quantizedAabbMin[3];
unsigned short int m_quantizedAabbMax[3];
};
struct btQuantizedBvhFloatData
{
btVector3FloatData m_bvhAabbMin;
btVector3FloatData m_bvhAabbMax;
btVector3FloatData m_bvhQuantization;
int m_curNodeIndex;
int m_useQuantization;
int m_numContiguousLeafNodes;
int m_numQuantizedContiguousNodes;
btOptimizedBvhNodeFloatData *m_contiguousNodesPtr;
btQuantizedBvhNodeData *m_quantizedContiguousNodesPtr;
int m_traversalMode;
int m_numSubtreeHeaders;
btBvhSubtreeInfoData *m_subTreeInfoPtr;
};
struct btQuantizedBvhDoubleData
{
btVector3DoubleData m_bvhAabbMin;
btVector3DoubleData m_bvhAabbMax;
btVector3DoubleData m_bvhQuantization;
int m_curNodeIndex;
int m_useQuantization;
int m_numContiguousLeafNodes;
int m_numQuantizedContiguousNodes;
btOptimizedBvhNodeDoubleData *m_contiguousNodesPtr;
btQuantizedBvhNodeData *m_quantizedContiguousNodesPtr;
int m_traversalMode;
int m_numSubtreeHeaders;
btBvhSubtreeInfoData *m_subTreeInfoPtr;
};
SIMD_FORCE_INLINE int btQuantizedBvh::calculateSerializeBufferSizeNew() const
{
return sizeof(btQuantizedBvhData);
}
#endif //QUANTIZED_BVH_H