[PATCH] EXA: ModifyPixmapHeader_mixed fixes.

[Maarten Maathuis]

You might still want to set to deferred pixmap to NULL if it currently
is this pixmap.

2009/12/8 Michel Dänzer <michel at daenzer.net>:
> From: Michel Dänzer <daenzer at vmware.com>
>
> * Better detection of dimension changes.
> * Make sure to re-create the system memory copy when the pixmap dimensions
>  change (e.g. the screen pixmap on screen resize).
> * Clear the valid regions.
>
> Signed-off-by: Michel Dänzer <daenzer at vmware.com>
> ---
>
> Maarten, note that I don't think there's any point in dealing with deferred
> pixmaps here after all, since the GPU copy contents won't be considered valid
> anyway.
>
>
>  exa/exa_mixed.c |   40 +++++++++++++++++++++++++++++++++++++---
>  1 files changed, 37 insertions(+), 3 deletions(-)
>
> diff --git a/exa/exa_mixed.c b/exa/exa_mixed.c
> index 7dc426f..e55ce33 100644
> --- a/exa/exa_mixed.c
> +++ b/exa/exa_mixed.c
> @@ -135,17 +135,51 @@ exaModifyPixmapHeader_mixed(PixmapPtr pPixmap, int width, int height, int depth,
>        pExaPixmap->score = EXA_PIXMAP_SCORE_PINNED;
>     }
>
> -    if (pExaPixmap->driverPriv) {
> -        if (width > 0 && height > 0 && bitsPerPixel > 0) {
> +    has_gpu_copy = exaPixmapHasGpuCopy(pPixmap);
> +
> +    if (width <= 0)
> +       width = pPixmap->drawable.width;
> +
> +    if (height <= 0)
> +       height = pPixmap->drawable.height;
> +
> +    if (bitsPerPixel <= 0) {
> +       if (depth <= 0)
> +           bitsPerPixel = pPixmap->drawable.bitsPerPixel;
> +       else
> +           bitsPerPixel = BitsPerPixel(depth);
> +    }
> +
> +    if (depth <= 0)
> +       depth = pPixmap->drawable.depth;
> +
> +    if (width != pPixmap->drawable.width ||
> +       height != pPixmap->drawable.height ||
> +       devKind != pPixmap->devKind ||
> +       depth != pPixmap->drawable.depth ||
> +       bitsPerPixel != pPixmap->drawable.bitsPerPixel) {
> +       if (pExaPixmap->driverPriv) {
>             exaSetFbPitch(pExaScr, pExaPixmap,
>                           width, height, bitsPerPixel);
>
>             exaSetAccelBlock(pExaScr, pExaPixmap,
>                              width, height, bitsPerPixel);
> +            REGION_EMPTY(pScreen, &pExaPixmap->validFB);
>         }
> +
> +       /* Need to re-create system copy if there's also a GPU copy */
> +       if (has_gpu_copy && pExaPixmap->sys_ptr) {
> +           free(pExaPixmap->sys_ptr);
> +           pExaPixmap->sys_ptr = NULL;
> +           pExaPixmap->sys_pitch = devKind > 0 ? devKind :
> +               PixmapBytePad(width, depth);
> +           DamageUnregister(&pPixmap->drawable, pExaPixmap->pDamage);
> +           DamageDestroy(pExaPixmap->pDamage);
> +           pExaPixmap->pDamage = NULL;
> +           REGION_EMPTY(pScreen, &pExaPixmap->validSys);
> +       }
>     }
>
> -    has_gpu_copy = exaPixmapHasGpuCopy(pPixmap);
>     if (has_gpu_copy) {
>        pPixmap->devPrivate.ptr = pExaPixmap->fb_ptr;
>        pPixmap->devKind = pExaPixmap->fb_pitch;
> --
> 1.6.4.3
>
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