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-rw-r--r--thirdparty/bullet/Bullet3OpenCL/BroadphaseCollision/b3GpuParallelLinearBvh.h68
1 files changed, 34 insertions, 34 deletions
diff --git a/thirdparty/bullet/Bullet3OpenCL/BroadphaseCollision/b3GpuParallelLinearBvh.h b/thirdparty/bullet/Bullet3OpenCL/BroadphaseCollision/b3GpuParallelLinearBvh.h
index effe617b7b..b390775129 100644
--- a/thirdparty/bullet/Bullet3OpenCL/BroadphaseCollision/b3GpuParallelLinearBvh.h
+++ b/thirdparty/bullet/Bullet3OpenCL/BroadphaseCollision/b3GpuParallelLinearBvh.h
@@ -37,10 +37,10 @@ subject to the following restrictions:
///"Maximizing Parallelism in the Construction of BVHs, Octrees, and k-d trees" [Karras 2012] \n
///@par
///The basic algorithm for building the BVH as presented in [Lauterbach et al. 2009] consists of 4 stages:
-/// - [fully parallel] Assign morton codes for each AABB using its center (after quantizing the AABB centers into a virtual grid)
+/// - [fully parallel] Assign morton codes for each AABB using its center (after quantizing the AABB centers into a virtual grid)
/// - [fully parallel] Sort morton codes
-/// - [somewhat parallel] Build binary radix tree (assign parent/child pointers for internal nodes of the BVH)
-/// - [somewhat parallel] Set internal node AABBs
+/// - [somewhat parallel] Build binary radix tree (assign parent/child pointers for internal nodes of the BVH)
+/// - [somewhat parallel] Set internal node AABBs
///@par
///[Karras 2012] improves on the algorithm by introducing fully parallel methods for the last 2 stages.
///The BVH implementation here shares many concepts with [Karras 2012], but a different method is used for constructing the tree.
@@ -49,75 +49,75 @@ subject to the following restrictions:
class b3GpuParallelLinearBvh
{
cl_command_queue m_queue;
-
+
cl_program m_parallelLinearBvhProgram;
-
+
cl_kernel m_separateAabbsKernel;
cl_kernel m_findAllNodesMergedAabbKernel;
cl_kernel m_assignMortonCodesAndAabbIndiciesKernel;
-
+
//Binary radix tree construction kernels
cl_kernel m_computeAdjacentPairCommonPrefixKernel;
cl_kernel m_buildBinaryRadixTreeLeafNodesKernel;
cl_kernel m_buildBinaryRadixTreeInternalNodesKernel;
cl_kernel m_findDistanceFromRootKernel;
cl_kernel m_buildBinaryRadixTreeAabbsRecursiveKernel;
-
+
cl_kernel m_findLeafIndexRangesKernel;
-
+
//Traversal kernels
cl_kernel m_plbvhCalculateOverlappingPairsKernel;
cl_kernel m_plbvhRayTraverseKernel;
cl_kernel m_plbvhLargeAabbAabbTestKernel;
cl_kernel m_plbvhLargeAabbRayTestKernel;
-
+
b3RadixSort32CL m_radixSorter;
-
+
//1 element
- b3OpenCLArray<int> m_rootNodeIndex; //Most significant bit(0x80000000) is set to indicate internal node
- b3OpenCLArray<int> m_maxDistanceFromRoot; //Max number of internal nodes between an internal node and the root node
- b3OpenCLArray<int> m_temp; //Used to hold the number of pairs in calculateOverlappingPairs()
-
+ b3OpenCLArray<int> m_rootNodeIndex; //Most significant bit(0x80000000) is set to indicate internal node
+ b3OpenCLArray<int> m_maxDistanceFromRoot; //Max number of internal nodes between an internal node and the root node
+ b3OpenCLArray<int> m_temp; //Used to hold the number of pairs in calculateOverlappingPairs()
+
//1 element per internal node (number_of_internal_nodes == number_of_leaves - 1)
b3OpenCLArray<b3SapAabb> m_internalNodeAabbs;
- b3OpenCLArray<b3Int2> m_internalNodeLeafIndexRanges; //x == min leaf index, y == max leaf index
- b3OpenCLArray<b3Int2> m_internalNodeChildNodes; //x == left child, y == right child; msb(0x80000000) is set to indicate internal node
- b3OpenCLArray<int> m_internalNodeParentNodes; //For parent node index, msb(0x80000000) is not set since it is always internal
-
+ b3OpenCLArray<b3Int2> m_internalNodeLeafIndexRanges; //x == min leaf index, y == max leaf index
+ b3OpenCLArray<b3Int2> m_internalNodeChildNodes; //x == left child, y == right child; msb(0x80000000) is set to indicate internal node
+ b3OpenCLArray<int> m_internalNodeParentNodes; //For parent node index, msb(0x80000000) is not set since it is always internal
+
//1 element per internal node; for binary radix tree construction
b3OpenCLArray<b3Int64> m_commonPrefixes;
b3OpenCLArray<int> m_commonPrefixLengths;
- b3OpenCLArray<int> m_distanceFromRoot; //Number of internal nodes between this node and the root
-
+ b3OpenCLArray<int> m_distanceFromRoot; //Number of internal nodes between this node and the root
+
//1 element per leaf node (leaf nodes only include small AABBs)
- b3OpenCLArray<int> m_leafNodeParentNodes; //For parent node index, msb(0x80000000) is not set since it is always internal
- b3OpenCLArray<b3SortData> m_mortonCodesAndAabbIndicies; //m_key == morton code, m_value == aabb index in m_leafNodeAabbs
- b3OpenCLArray<b3SapAabb> m_mergedAabb; //m_mergedAabb[0] contains the merged AABB of all leaf nodes
- b3OpenCLArray<b3SapAabb> m_leafNodeAabbs; //Contains only small AABBs
-
+ b3OpenCLArray<int> m_leafNodeParentNodes; //For parent node index, msb(0x80000000) is not set since it is always internal
+ b3OpenCLArray<b3SortData> m_mortonCodesAndAabbIndicies; //m_key == morton code, m_value == aabb index in m_leafNodeAabbs
+ b3OpenCLArray<b3SapAabb> m_mergedAabb; //m_mergedAabb[0] contains the merged AABB of all leaf nodes
+ b3OpenCLArray<b3SapAabb> m_leafNodeAabbs; //Contains only small AABBs
+
//1 element per large AABB, which is not stored in the BVH
b3OpenCLArray<b3SapAabb> m_largeAabbs;
-
+
public:
b3GpuParallelLinearBvh(cl_context context, cl_device_id device, cl_command_queue queue);
virtual ~b3GpuParallelLinearBvh();
-
+
///Must be called before any other function
- void build(const b3OpenCLArray<b3SapAabb>& worldSpaceAabbs, const b3OpenCLArray<int>& smallAabbIndices,
- const b3OpenCLArray<int>& largeAabbIndices);
-
+ void build(const b3OpenCLArray<b3SapAabb>& worldSpaceAabbs, const b3OpenCLArray<int>& smallAabbIndices,
+ const b3OpenCLArray<int>& largeAabbIndices);
+
///calculateOverlappingPairs() uses the worldSpaceAabbs parameter of b3GpuParallelLinearBvh::build() as the query AABBs.
///@param out_overlappingPairs The size() of this array is used to determine the max number of pairs.
///If the number of overlapping pairs is < out_overlappingPairs.size(), out_overlappingPairs is resized.
void calculateOverlappingPairs(b3OpenCLArray<b3Int4>& out_overlappingPairs);
-
+
///@param out_numRigidRayPairs Array of length 1; contains the number of detected ray-rigid AABB intersections;
///this value may be greater than out_rayRigidPairs.size() if out_rayRigidPairs is not large enough.
///@param out_rayRigidPairs Contains an array of rays intersecting rigid AABBs; x == ray index, y == rigid body index.
///If the size of this array is insufficient to hold all ray-rigid AABB intersections, additional intersections are discarded.
- void testRaysAgainstBvhAabbs(const b3OpenCLArray<b3RayInfo>& rays,
- b3OpenCLArray<int>& out_numRayRigidPairs, b3OpenCLArray<b3Int2>& out_rayRigidPairs);
-
+ void testRaysAgainstBvhAabbs(const b3OpenCLArray<b3RayInfo>& rays,
+ b3OpenCLArray<int>& out_numRayRigidPairs, b3OpenCLArray<b3Int2>& out_rayRigidPairs);
+
private:
void constructBinaryRadixTree();
};