[PATCH 21/36] dix: pixmap sharing infrastructure (v2)
Keith Packard
keithp at keithp.com
Mon Jul 2 12:20:17 PDT 2012
Dave Airlie <airlied at gmail.com> writes:
> From: Dave Airlie <airlied at redhat.com>
>
> This is a hooks for pixmap sharing and tracking.
>
> The pixmap sharing ones get an integer handle for the pixmap
> and use a handle to be the backing for a pixmap.
>
> The tracker interface is to be used when a GPU needs to
> track pixmaps to be updated for another GPU.
>
> v2: pass slave to sharing so it can use it to work out driver.
>
> Signed-off-by: Dave Airlie <airlied at redhat.com>
> ---
> include/scrnintstr.h | 17 +++++++++++++++++
> 1 file changed, 17 insertions(+)
>
> diff --git a/include/scrnintstr.h b/include/scrnintstr.h
> index 6a22167..5b9f245 100644
> --- a/include/scrnintstr.h
> +++ b/include/scrnintstr.h
> @@ -179,6 +179,8 @@ typedef void (*ClipNotifyProcPtr) (WindowPtr /*pWindow */ ,
> #define CREATE_PIXMAP_USAGE_BACKING_PIXMAP 2
> /* pixmap will contain a glyph */
> #define CREATE_PIXMAP_USAGE_GLYPH_PICTURE 3
> +/* pixmap will be shared */
> +#define CREATE_PIXMAP_USAGE_SHARED 4
>
> typedef PixmapPtr (*CreatePixmapProcPtr) (ScreenPtr /*pScreen */ ,
> int /*width */ ,
> @@ -339,6 +341,16 @@ typedef void (*DeviceCursorCleanupProcPtr) (DeviceIntPtr /* pDev */ ,
> typedef void (*ConstrainCursorHarderProcPtr) (DeviceIntPtr, ScreenPtr, int,
> int *, int *);
>
> +
> +typedef Bool (*SharePixmapBackingProcPtr)(PixmapPtr, ScreenPtr, int *);
Not sure 'int' is the best type for this; I know it's sufficient for
current usage, but one wonders if 64-bit identifiers, or something even
more complicated will happen in the future. (void *) instead?
--
keith.packard at intel.com
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