BGE: Fix T38030: wrong vertex index returned by KX_PolyProxy

Fix T38030.
In c++ source we use one list for triangles and an other for quads, but KX_PolyProxy doesn't care about that and return the vertex offset in its list. So we just have to compute the offset of each RAS_DisplayArray to its previous to have an absolute vertex index.

Reviewers: moguri, campbellbarton, kupoman, agoose77, brita_, hg1

Reviewed By: agoose77, hg1

Projects: #game_engine

Maniphest Tasks: T38030

Differential Revision: https://developer.blender.org/D1324

1 files changed, 17 insertions, 0 deletions

diff --git a/source/gameengine/Rasterizer/RAS_MeshObject.cpp b/source/gameengine/Rasterizer/RAS_MeshObject.cpp
index 54b15f07896..4360464ed32 100644
--- a/source/gameengine/Rasterizer/RAS_MeshObject.cpp
+++ b/source/gameengine/Rasterizer/RAS_MeshObject.cpp
@@ -465,6 +465,23 @@ void RAS_MeshObject::RemoveFromBuckets(void *clientobj)
 	}
 }
 
+void RAS_MeshObject::EndConversion()
+{
+#if 0
+	m_sharedvertex_map.clear(); // SharedVertex
+	vector<vector<SharedVertex> >	shared_null(0);
+	shared_null.swap( m_sharedvertex_map ); /* really free the memory */
+#endif
+
+	for (std::list<RAS_MeshMaterial>::iterator it = m_materials.begin();
+		 it != m_materials.end();
+		 ++it)
+	{
+		RAS_MeshSlot *ms = it->m_baseslot;
+		ms->UpdateDisplayArraysOffset();
+	}
+}
+
 //void RAS_MeshObject::Transform(const MT_Transform& trans)
 //{
 	//m_trans.translate(MT_Vector3(0,0,1));//.operator *=(trans);