* Turns out you must not set the source width/height UV registers (for planar

mode), but you have to set the scaling UV registers in order to have correct
  overlay.
* In other words, overlay is working now! There are still issues with it, which
  can probably be attributed to missing bounds checks (the screen goes black
  when you leave full-screen mode in VLC - but not if overlay just stops).


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@17365 a95241bf-73f2-0310-859d-f6bbb57e9c96

headers/private/graphics/intel_extreme/intel_extreme.h

@@ -251,6 +251,10 @@ struct overlay_scale {
 #define OVERLAY_FORMAT_YCbCr411			0x9
 #define OVERLAY_FORMAT_YCbCr420			0xc
 
+#define OVERLAY_MIRROR_NORMAL			0x0
+#define OVERLAY_MIRROR_HORIZONTAL		0x1
+#define OVERLAY_MIRROR_VERTICAL			0x2
+
 // The real overlay registers are written to using an update buffer
 
 struct overlay_registers {