[PATCH xserver] Add SyncSharedPixmap ScreenRec hook

[Alex Deucher]

On Wed, Aug 31, 2016 at 4:56 AM, Michel Dänzer <michel at daenzer.net> wrote:
> From: Michel Dänzer <michel.daenzer at amd.com>
>
> Signed-off-by: Michel Dänzer <michel.daenzer at amd.com>

Reviewed-by: Alex Deucher <alexander.deucher at amd.com>

> ---
>  include/scrnintstr.h | 19 +++++++++++++++++++
>  1 file changed, 19 insertions(+)
>
> diff --git a/include/scrnintstr.h b/include/scrnintstr.h
> index 5330714..52e8382 100644
> --- a/include/scrnintstr.h
> +++ b/include/scrnintstr.h
> @@ -347,6 +347,24 @@ typedef Bool (*SharePixmapBackingProcPtr)(PixmapPtr, ScreenPtr, void **);
>
>  typedef Bool (*SetSharedPixmapBackingProcPtr)(PixmapPtr, void *);
>
> +#define HAS_SYNC_SHARED_PIXMAP 1
> +/* The SyncSharedPixmap hook has two purposes:
> + *
> + * 1. If the master driver has it, the slave driver can use it to
> + * synchronize the shared pixmap contents with the screen pixmap.
> + * 2. If the slave driver has it, the master driver can expect the slave
> + * driver to call the master screen's SyncSharedPixmap hook, so the master
> + * driver doesn't have to synchronize the shared pixmap contents itself,
> + * e.g. from the BlockHandler.
> + *
> + * A driver must only set the hook if it handles both cases correctly.
> + *
> + * The argument is the slave screen's pixmap_dirty_list entry, the hook is
> + * responsible for finding the corresponding entry in the master screen's
> + * pixmap_dirty_list.
> + */
> +typedef void (*SyncSharedPixmapProcPtr)(PixmapDirtyUpdatePtr);
> +
>  typedef Bool (*StartPixmapTrackingProcPtr)(PixmapPtr, PixmapPtr,
>                                             int x, int y,
>                                             int dst_x, int dst_y,
> @@ -616,6 +634,7 @@ typedef struct _Screen {
>
>      StartPixmapTrackingProcPtr StartPixmapTracking;
>      StopPixmapTrackingProcPtr StopPixmapTracking;
> +    SyncSharedPixmapProcPtr SyncSharedPixmap;
>
>      SharedPixmapNotifyDamageProcPtr SharedPixmapNotifyDamage;
>      RequestSharedPixmapNotifyDamageProcPtr RequestSharedPixmapNotifyDamage;
> --
> 2.9.3
>
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