BGE performance: allow to create display list on meshes with modifiers but without armature and shape keys. These modified meshes are static and can be put safely in a display list. As the rendering of modifiers is done in direct openGL call, it results is a bit performance boost.

2 files changed, 8 insertions, 2 deletions

diff --git a/source/gameengine/Rasterizer/RAS_Deformer.h b/source/gameengine/Rasterizer/RAS_Deformer.h
index fe081dd4aa5..bb8e3750485 100644
--- a/source/gameengine/Rasterizer/RAS_Deformer.h
+++ b/source/gameengine/Rasterizer/RAS_Deformer.h
@@ -39,7 +39,7 @@
 class RAS_Deformer
 {
 public:
-	RAS_Deformer(){};
+	RAS_Deformer() : m_pMesh(0), m_bDynamic(false) {};
 	virtual ~RAS_Deformer(){};
 	virtual void Relink(GEN_Map<class GEN_HashedPtr, void*>*map)=0;
 	virtual bool Apply(class RAS_IPolyMaterial *polymat)=0;
@@ -55,8 +55,14 @@ public:
 	{
 		return true;
 	}
+	// true when deformer produces varying vertex (shape or armature)
+	bool IsDynamic()
+	{
+		return m_bDynamic;
+	}
 protected:
 	class RAS_MeshObject	*m_pMesh;
+	bool  m_bDynamic;	
 };
 
 #endif
diff --git a/source/gameengine/Rasterizer/RAS_MaterialBucket.cpp b/source/gameengine/Rasterizer/RAS_MaterialBucket.cpp
index db6394c1ec0..841264465cf 100644
--- a/source/gameengine/Rasterizer/RAS_MaterialBucket.cpp
+++ b/source/gameengine/Rasterizer/RAS_MaterialBucket.cpp
@@ -597,7 +597,7 @@ void RAS_MaterialBucket::RenderMeshSlot(const MT_Transform& cameratrans, RAS_IRa
 	// then it won't have texture coordinates for actual drawing. also
 	// for zsort we can't make a display list, since the polygon order
 	// changes all the time.
-	if(ms.m_pDeformer)
+	if(ms.m_pDeformer && ms.m_pDeformer->IsDynamic())
 		ms.m_bDisplayList = false;
 	else if(!ms.m_DisplayList && rasty->GetDrawingMode() == RAS_IRasterizer::KX_SHADOW)
 		ms.m_bDisplayList = false;