Implement IO_OUTPUT + SurfaceTexture

Change-Id: Id96fecd6d768196523330c5eda77c4ee86b9bd3c
diff --git a/driver/rsdAllocation.h b/driver/rsdAllocation.h
index e3a5126..bd5151b 100644
--- a/driver/rsdAllocation.h
+++ b/driver/rsdAllocation.h
@@ -40,6 +40,8 @@
     uint32_t renderTargetID;
 
     uint8_t * mallocPtr;
+    uint32_t width;
+    uint32_t height;
 
     GLenum glTarget;
     GLenum glType;
@@ -48,6 +50,7 @@
     bool uploadDeferred;
 
     RsdFrameBufferObj * readBackFBO;
+    ANativeWindow *wnd;
     ANativeWindowBuffer *wndBuffer;
 };