Fix rotation with newer Xserver versions (exaOffscreenAlloc)

*Del for deduct the probable size of a shadow buffer.
*Use exaOffscreenAlloc allocate the shadow buffer.
*Rotateeddata has to be allocate in offscreen memory range.
*Ubuntu Bugzilla #377929

Signed-off-by: Hunk Cui <Hunk.Cui@amd.com>

1 files changed, 2 insertions, 0 deletions

diff --git a/src/geode.h b/src/geode.h
index 8fe67b5..ad94a02 100644
--- a/src/geode.h
+++ b/src/geode.h
@@ -210,6 +210,8 @@ typedef struct _geodeRec
     int Pitch;			       /* display FB pitch */
     int displaySize;		       /* The size of the visibile area */
 
+    ExaOffscreenArea *shadowArea;
+
     /* Framebuffer memory */
 
     unsigned char *FBBase;