From e12c89e8c9896b2e5cdd70dbd2d2acb449ff4b94 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?R=C3=A9mi=20Verschelde?= <rverschelde@gmail.com>
Date: Sat, 13 Jan 2018 14:01:53 +0100
Subject: bullet: Streamline bundling, remove extraneous src/ folder

Document version and how to extract sources in thirdparty/README.md.
Drop unnecessary CMake and Premake files.
Simplify SCsub, drop unused one.
---
 .../NarrowPhaseCollision/shared/b3BvhTraversal.h   | 126 +++++++++++++++++++++
 1 file changed, 126 insertions(+)
 create mode 100644 thirdparty/bullet/Bullet3Collision/NarrowPhaseCollision/shared/b3BvhTraversal.h

(limited to 'thirdparty/bullet/Bullet3Collision/NarrowPhaseCollision/shared/b3BvhTraversal.h')

diff --git a/thirdparty/bullet/Bullet3Collision/NarrowPhaseCollision/shared/b3BvhTraversal.h b/thirdparty/bullet/Bullet3Collision/NarrowPhaseCollision/shared/b3BvhTraversal.h
new file mode 100644
index 0000000000..2618da24bc
--- /dev/null
+++ b/thirdparty/bullet/Bullet3Collision/NarrowPhaseCollision/shared/b3BvhTraversal.h
@@ -0,0 +1,126 @@
+
+
+#include "Bullet3Common/shared/b3Int4.h"
+#include "Bullet3Collision/NarrowPhaseCollision/shared/b3RigidBodyData.h"
+#include "Bullet3Collision/NarrowPhaseCollision/shared/b3Collidable.h"
+#include "Bullet3Collision/BroadPhaseCollision/shared/b3Aabb.h"
+#include "Bullet3Collision/NarrowPhaseCollision/shared/b3BvhSubtreeInfoData.h"
+#include "Bullet3Collision/NarrowPhaseCollision/shared/b3QuantizedBvhNodeData.h"
+
+
+
+// work-in-progress
+void   b3BvhTraversal( __global const b3Int4* pairs, 
+									__global const b3RigidBodyData* rigidBodies, 
+									__global const b3Collidable* collidables,
+									__global b3Aabb* aabbs,
+									__global b3Int4* concavePairsOut,
+									__global volatile int* numConcavePairsOut,
+									__global const b3BvhSubtreeInfo* subtreeHeadersRoot,
+									__global const b3QuantizedBvhNode* quantizedNodesRoot,
+									__global const b3BvhInfo* bvhInfos,
+									int numPairs,
+									int maxNumConcavePairsCapacity,
+									int id)
+{
+	
+	int bodyIndexA = pairs[id].x;
+	int bodyIndexB = pairs[id].y;
+	int collidableIndexA = rigidBodies[bodyIndexA].m_collidableIdx;
+	int collidableIndexB = rigidBodies[bodyIndexB].m_collidableIdx;
+	
+	//once the broadphase avoids static-static pairs, we can remove this test
+	if ((rigidBodies[bodyIndexA].m_invMass==0) &&(rigidBodies[bodyIndexB].m_invMass==0))
+	{
+		return;
+	}
+		
+	if (collidables[collidableIndexA].m_shapeType!=SHAPE_CONCAVE_TRIMESH)
+		return;
+
+	int shapeTypeB = collidables[collidableIndexB].m_shapeType;
+		
+	if (shapeTypeB!=SHAPE_CONVEX_HULL &&
+		shapeTypeB!=SHAPE_SPHERE	&&
+		shapeTypeB!=SHAPE_COMPOUND_OF_CONVEX_HULLS
+		)
+		return;
+
+	b3BvhInfo bvhInfo = bvhInfos[collidables[collidableIndexA].m_numChildShapes];
+
+	b3Float4	bvhAabbMin = bvhInfo.m_aabbMin;
+	b3Float4	bvhAabbMax = bvhInfo.m_aabbMax;
+	b3Float4	bvhQuantization = bvhInfo.m_quantization;
+	int numSubtreeHeaders = bvhInfo.m_numSubTrees;
+	__global const b3BvhSubtreeInfoData* subtreeHeaders = &subtreeHeadersRoot[bvhInfo.m_subTreeOffset];
+	__global const b3QuantizedBvhNodeData* quantizedNodes = &quantizedNodesRoot[bvhInfo.m_nodeOffset];
+	
+
+	unsigned short int quantizedQueryAabbMin[3];
+	unsigned short int quantizedQueryAabbMax[3];
+	b3QuantizeWithClamp(quantizedQueryAabbMin,aabbs[bodyIndexB].m_minVec,false,bvhAabbMin, bvhAabbMax,bvhQuantization);
+	b3QuantizeWithClamp(quantizedQueryAabbMax,aabbs[bodyIndexB].m_maxVec,true ,bvhAabbMin, bvhAabbMax,bvhQuantization);
+	
+	for (int i=0;i<numSubtreeHeaders;i++)
+	{
+		b3BvhSubtreeInfoData subtree = subtreeHeaders[i];
+				
+		int overlap = b3TestQuantizedAabbAgainstQuantizedAabbSlow(quantizedQueryAabbMin,quantizedQueryAabbMax,subtree.m_quantizedAabbMin,subtree.m_quantizedAabbMax);
+		if (overlap != 0)
+		{
+			int startNodeIndex = subtree.m_rootNodeIndex;
+			int endNodeIndex = subtree.m_rootNodeIndex+subtree.m_subtreeSize;
+			int curIndex = startNodeIndex;
+			int escapeIndex;
+			int isLeafNode;
+			int aabbOverlap;
+			while (curIndex < endNodeIndex)
+			{
+				b3QuantizedBvhNodeData rootNode = quantizedNodes[curIndex];
+				aabbOverlap = b3TestQuantizedAabbAgainstQuantizedAabbSlow(quantizedQueryAabbMin,quantizedQueryAabbMax,rootNode.m_quantizedAabbMin,rootNode.m_quantizedAabbMax);
+				isLeafNode = b3IsLeaf(&rootNode);
+				if (aabbOverlap)
+				{
+					if (isLeafNode)
+					{
+						int triangleIndex = b3GetTriangleIndex(&rootNode);
+						if (shapeTypeB==SHAPE_COMPOUND_OF_CONVEX_HULLS)
+						{
+								int numChildrenB = collidables[collidableIndexB].m_numChildShapes;
+								int pairIdx = b3AtomicAdd (numConcavePairsOut,numChildrenB);
+								for (int b=0;b<numChildrenB;b++)
+								{
+									if ((pairIdx+b)<maxNumConcavePairsCapacity)
+									{
+										int childShapeIndexB = collidables[collidableIndexB].m_shapeIndex+b;
+										b3Int4 newPair = b3MakeInt4(bodyIndexA,bodyIndexB,triangleIndex,childShapeIndexB);
+										concavePairsOut[pairIdx+b] = newPair;
+									}
+								}
+						} else
+						{
+							int pairIdx = b3AtomicInc(numConcavePairsOut);
+							if (pairIdx<maxNumConcavePairsCapacity)
+							{
+								b3Int4 newPair = b3MakeInt4(bodyIndexA,bodyIndexB,triangleIndex,0);
+								concavePairsOut[pairIdx] = newPair;
+							}
+						}
+					} 
+					curIndex++;
+				} else
+				{
+					if (isLeafNode)
+					{
+						curIndex++;
+					} else
+					{
+						escapeIndex = b3GetEscapeIndex(&rootNode);
+						curIndex += escapeIndex;
+					}
+				}
+			}
+		}
+	}
+
+}
\ No newline at end of file
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