nx-X11: handle source pictures (those without a Drawable surface) gracefully.

Cherry-picked from branch 3.5.0.x.

This is basically a merge of the most current xorg-server (1.17.1) code
into nx-X11.

It makes sure that for source pictures, which do not have a drawable
surface, a filter is selected that is supported on the "main" and all
other screens.  Alternatively, if the requested filter is not available
on all screens and the picture is a source picture, this function fails
gracefully.

Additionally, the ChangePictureFilter hook is now called for non-source
pictures.

This also needs an implementation in mipict.{c,h}. The default hook does
nothing and returns a success value.

1 files changed, 18 insertions, 0 deletions

diff --git a/nx-X11/programs/Xserver/render/mipict.c b/nx-X11/programs/Xserver/render/mipict.c
index 81c775832..59707ea70 100644
--- a/nx-X11/programs/Xserver/render/mipict.c
+++ b/nx-X11/programs/Xserver/render/mipict.c
@@ -250,6 +250,22 @@ miValidatePicture (PicturePtr pPicture,
     }
 }
 
+int
+miChangePictureTransform (PicturePtr	pPicture,
+			  PictTransform *transform)
+{
+    return Success;
+}
+
+int
+miChangePictureFilter (PicturePtr pPicture,
+		       int	  filter,
+		       xFixed     *params,
+		       int	  nparams)
+{
+    return Success;
+}
+
 #define BOUND(v)	(INT16) ((v) < MINSHORT ? MINSHORT : (v) > MAXSHORT ? MAXSHORT : (v))
 
 static __inline Bool
@@ -611,6 +627,8 @@ miPictureInit (ScreenPtr pScreen, PictFormatPtr formats, int nformats)
     ps->InitIndexed = miInitIndexed;
     ps->CloseIndexed = miCloseIndexed;
     ps->UpdateIndexed = miUpdateIndexed;
+    ps->ChangePictureTransform = miChangePictureTransform;
+    ps->ChangePictureFilter = miChangePictureFilter;
 
     /* MI rendering routines */
     ps->Composite	= 0;			/* requires DDX support */