Add new CheckComposite hook. This allows a driver to avoid the migration of

    pixmaps for a Composite operation if the operation can't be supported.
    This hook is optional.

1 files changed, 5 insertions, 0 deletions

diff --git a/hw/kdrive/src/kaapict.c b/hw/kdrive/src/kaapict.c
index cca0d466e..5c4696dec 100644
--- a/hw/kdrive/src/kaapict.c
+++ b/hw/kdrive/src/kaapict.c
@@ -426,6 +426,11 @@ kaaTryDriverComposite(CARD8		op,
 				   width, height))
 	return 1;
 
+    if (pKaaScr->info->CheckComposite &&
+	!(*pKaaScr->info->CheckComposite) (op, pSrc, pMask, pDst))
+    {
+	return -1;
+    }
 
     if (pSrc->pDrawable->type == DRAWABLE_PIXMAP)
 	kaaPixmapUseScreen ((PixmapPtr) pSrc->pDrawable);