bullet: Update to current svn, r2636

Apply patches in patches directory, remove patches that were applied
upstream.
If you made changes without adding a patch, please check.

Fixes [#32233] exporting bullet format results in corrupt files.

1 files changed, 7 insertions, 1 deletions

diff --git a/extern/bullet2/src/BulletCollision/CollisionShapes/btBvhTriangleMeshShape.h b/extern/bullet2/src/BulletCollision/CollisionShapes/btBvhTriangleMeshShape.h
index d1c21629873..493d635539e 100644
--- a/extern/bullet2/src/BulletCollision/CollisionShapes/btBvhTriangleMeshShape.h
+++ b/extern/bullet2/src/BulletCollision/CollisionShapes/btBvhTriangleMeshShape.h
@@ -21,7 +21,13 @@ subject to the following restrictions:
 #include "LinearMath/btAlignedAllocator.h"
 #include "btTriangleInfoMap.h"
 
-///The btBvhTriangleMeshShape is a static-triangle mesh shape with several optimizations, such as bounding volume hierarchy and cache friendly traversal for PlayStation 3 Cell SPU. It is recommended to enable useQuantizedAabbCompression for better memory usage.
+///The btBvhTriangleMeshShape is a static-triangle mesh shape, it can only be used for fixed/non-moving objects.
+///If you required moving concave triangle meshes, it is recommended to perform convex decomposition
+///using HACD, see Bullet/Demos/ConvexDecompositionDemo. 
+///Alternatively, you can use btGimpactMeshShape for moving concave triangle meshes.
+///btBvhTriangleMeshShape has several optimizations, such as bounding volume hierarchy and 
+///cache friendly traversal for PlayStation 3 Cell SPU. 
+///It is recommended to enable useQuantizedAabbCompression for better memory usage.
 ///It takes a triangle mesh as input, for example a btTriangleMesh or btTriangleIndexVertexArray. The btBvhTriangleMeshShape class allows for triangle mesh deformations by a refit or partialRefit method.
 ///Instead of building the bounding volume hierarchy acceleration structure, it is also possible to serialize (save) and deserialize (load) the structure from disk.
 ///See Demos\ConcaveDemo\ConcavePhysicsDemo.cpp for an example.