diff --git a/indra/llrender/llrender.cpp b/indra/llrender/llrender.cpp
index 86a6fba75..a40a0f1ac 100644
--- a/indra/llrender/llrender.cpp
+++ b/indra/llrender/llrender.cpp
@@ -2483,10 +2483,10 @@ void LLRender::vertexBatchPreTransformed(LLVector4a* verts, S32 vert_count)
 		mTexcoordsp[mCount] = mTexcoordsp[mCount - 1];
 	}
 
+	mVerticesp.copyArray(mCount, verts, vert_count);
+
 	for (S32 i = 0; i < vert_count; i++)
 	{
-		mVerticesp[mCount] = verts[i];
-
 		mCount++;
 		mTexcoordsp[mCount] = mTexcoordsp[mCount-1];
 		mColorsp[mCount] = mColorsp[mCount-1];
@@ -2521,11 +2521,11 @@ void LLRender::vertexBatchPreTransformed(LLVector4a* verts, LLVector2* uvs, S32
 		mTexcoordsp[mCount] = mTexcoordsp[mCount - 1];
 	}
 
+	mVerticesp.copyArray(mCount, verts, vert_count);
+	mTexcoordsp.copyArray(mCount, uvs, vert_count);
+
 	for (S32 i = 0; i < vert_count; i++)
 	{
-		mVerticesp[mCount] = verts[i];
-		mTexcoordsp[mCount] = uvs[i];
-
 		mCount++;
 		mColorsp[mCount] = mColorsp[mCount-1];
 	}