[PATCH xserver] Add SyncSharedPixmap ScreenRec hook

[Michel Dänzer]

On 31/08/16 05:56 PM, Michel Dänzer wrote:
> From: Michel Dänzer <michel.daenzer at amd.com>
> 
> Signed-off-by: Michel Dänzer <michel.daenzer 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;
> 

Here's an example how this hook can be used:

https://patchwork.freedesktop.org/patch/108074/


-- 
Earthling Michel Dänzer               |               http://www.amd.com
Libre software enthusiast             |             Mesa and X developer