Add an EXA driver callback to determine whether a pixmap is

"offscreen" in exa terms, which means accessible to the GPU.
Bump exa minor. The change is backwards-compatible.

1 files changed, 18 insertions, 1 deletions

diff --git a/exa/exa.h b/exa/exa.h
index bf723f723..6c39a8fdb 100644
--- a/exa/exa.h
+++ b/exa/exa.h
@@ -39,7 +39,7 @@
 #include "fb.h"
 
 #define EXA_VERSION_MAJOR   2
-#define EXA_VERSION_MINOR   1
+#define EXA_VERSION_MINOR   2
 #define EXA_VERSION_RELEASE 0
 
 typedef struct _ExaOffscreenArea ExaOffscreenArea;
@@ -636,6 +636,23 @@ typedef struct _ExaDriver {
      */
     void	(*FinishAccess)(PixmapPtr pPix, int index);
 
+    /**
+     * PixmapIsOffscreen() is an optional driver replacement to
+     * exaPixmapIsOffscreen(). Set to NULL if you want the standard behaviour
+     * of exaPixmapIsOffscreen().
+     *
+     * @param pPix the pixmap
+     * @return TRUE if the given drawable is in framebuffer memory.
+     *
+     * exaPixmapIsOffscreen() is used to determine if a pixmap is in offscreen
+     * memory, meaning that acceleration could probably be done to it, and that it
+     * will need to be wrapped by PrepareAccess()/FinishAccess() when accessing it
+     * with the CPU.
+     *
+     *
+     */
+    Bool	(*PixmapIsOffscreen)(PixmapPtr pPix);
+
 	/** @name PrepareAccess() and FinishAccess() indices
 	 * @{
 	 */