4ba7b59446
Normally composite will decide to add implicit redirection when a window with an alternate visual is a parent of a window with a regular visual or vice versa. This uses extra pixmap memory and incurs an extra copy. This exception mechanism provides a way for a DDX to override this if the DDX knows that its acceleration architecture will render correctly. The relevant case is that of an RGB window reparented into a ARGB parent frame window. If the DDX knows that the acceleration architecture in use will pad the alpha channel to opaque when rendering to the RGB window, the implicit redirection can be avoided. This patch adds a new composite function: CompositeRegisterImplicitRedirectionException() which lets a DDX register a pair of parent and child window visuals, that will not be implicitly redirected even if the normal policy would have made that choice. Signed-off-by: Kristian Høgsberg <krh@bitplanet.net> Reviewed-by: Keith Packard <keithp@keithp.com>
45 lines
1.9 KiB
C
45 lines
1.9 KiB
C
/*
|
|
* Copyright © 2009 NVIDIA Corporation
|
|
*
|
|
* Permission is hereby granted, free of charge, to any person obtaining a
|
|
* copy of this software and associated documentation files (the "Software"), to
|
|
* deal in the Software without restriction, including without limitation the
|
|
* rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
|
|
* sell copies of the Software, and to permit persons to whom the Software is
|
|
* furnished to do so, subject to the following conditions:
|
|
*
|
|
* The above copyright notice and this permission notice (including the next
|
|
* paragraph) shall be included in all copies or substantial portions of the
|
|
* Software.
|
|
*
|
|
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
|
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
|
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
|
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
|
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
|
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
|
|
* SOFTWARE.
|
|
*/
|
|
|
|
#ifdef HAVE_DIX_CONFIG_H
|
|
#include <dix-config.h>
|
|
#endif
|
|
|
|
#ifndef _COMPOSITEEXT_H_
|
|
#define _COMPOSITEEXT_H_
|
|
|
|
#include "misc.h"
|
|
#include "scrnintstr.h"
|
|
|
|
extern _X_EXPORT Bool CompositeRegisterAlternateVisuals(ScreenPtr pScreen,
|
|
VisualID * vids,
|
|
int nVisuals);
|
|
|
|
extern _X_EXPORT Bool CompositeRegisterImplicitRedirectionException(ScreenPtr pScreen,
|
|
VisualID parentVisual,
|
|
VisualID winVisual);
|
|
|
|
extern _X_EXPORT RESTYPE CompositeClientWindowType;
|
|
|
|
#endif /* _COMPOSITEEXT_H_ */
|