BGE: work around a problem with DBVT culling when graphic objects are rescaled. This happens when objects with very diverse scale are instantiated with dupligroup. The problem remains when the objects are rescaled during the game. The effect of the problem is an inefficient culling: objects can have a bounding box larger than needed. Patch to fix the problem is filed at Bullet forum.

1 files changed, 10 insertions, 1 deletions

diff --git a/source/gameengine/Physics/Bullet/CcdGraphicController.cpp b/source/gameengine/Physics/Bullet/CcdGraphicController.cpp
index 2d1f841af0c..2dbbb7fa4a0 100644
--- a/source/gameengine/Physics/Bullet/CcdGraphicController.cpp
+++ b/source/gameengine/Physics/Bullet/CcdGraphicController.cpp
@@ -118,8 +118,17 @@ PHY_IGraphicController* CcdGraphicController::GetReplica(class PHY_IMotionState*
 	replica->m_motionState = motionState;
 	replica->m_newClientInfo = NULL;
 	replica->m_handle = NULL;
-	m_phyEnv->addCcdGraphicController(replica);
+	// don't add the graphic controller now: work around a bug in Bullet with rescaling, 
+	// (the scale of the controller is not yet defined).
+	//m_phyEnv->addCcdGraphicController(replica);
 	return replica;
 }
 
+void CcdGraphicController::Activate(bool active)
+{
+	if (active)
+		m_phyEnv->addCcdGraphicController(this);
+	else
+		m_phyEnv->removeCcdGraphicController(this);
 
+}