Draw prims using triangle strips instead of triangle lists.

1 files changed, 14 insertions, 2 deletions

diff --git a/indra/newview/llvovolume.cpp b/indra/newview/llvovolume.cpp
index fbb44c8e76..f1b27fb4df 100644
--- a/indra/newview/llvovolume.cpp
+++ b/indra/newview/llvovolume.cpp
@@ -1515,7 +1515,14 @@ void LLVOVolume::updateFaceSize(S32 idx)
 	else
 	{
 		const LLVolumeFace& vol_face = getVolume()->getVolumeFace(idx);
-		facep->setSize(vol_face.mVertices.size(), vol_face.mIndices.size());
+		if (LLPipeline::sUseTriStrips)
+		{
+			facep->setSize(vol_face.mVertices.size(), vol_face.mTriStrip.size());
+		}
+		else
+		{
+			facep->setSize(vol_face.mVertices.size(), vol_face.mIndices.size());
+		}
 	}
 }
 
@@ -3265,6 +3272,11 @@ void LLVolumeGeometryManager::registerFace(LLSpatialGroup* group, LLFace* facep,
 		draw_info->mExtents[0] = facep->mExtents[0];
 		draw_info->mExtents[1] = facep->mExtents[1];
 		validate_draw_info(*draw_info);
+
+		if (LLPipeline::sUseTriStrips)
+		{
+			draw_info->mDrawMode = LLRender::TRIANGLE_STRIP;
+		}
 	}
 }
 
@@ -3349,7 +3361,7 @@ void LLVolumeGeometryManager::rebuildGeom(LLSpatialGroup* group)
 			drawablep->updateFaceSize(i);
 			LLFace* facep = drawablep->getFace(i);
 
-			if (cur_total > max_total)
+			if (cur_total > max_total || facep->getIndicesCount() <= 0 || facep->getGeomCount() <= 0)
 			{
 				facep->mVertexBuffer = NULL;
 				facep->mLastVertexBuffer = NULL;