Support for stencil clipping in layers

bug:22480459

Change-Id: Ic9e8652379524ccc46d8722ce49f9190b08a2abc
diff --git a/libs/hwui/GlopBuilder.cpp b/libs/hwui/GlopBuilder.cpp
index 2507ff3..45fc16c 100644
--- a/libs/hwui/GlopBuilder.cpp
+++ b/libs/hwui/GlopBuilder.cpp
@@ -78,7 +78,7 @@
     mOutGlop->mesh.vertices = {
             vbo,
             VertexAttribFlags::TextureCoord,
-            nullptr, nullptr, nullptr,
+            nullptr, (const void*) kMeshTextureOffset, nullptr,
             kTextureVertexStride };
     mOutGlop->mesh.elementCount = elementCount;
     return *this;