diff options
| author | Maarten Lankhorst <maarten.lankhorst@canonical.com> | 2013-10-02 15:47:54 +0200 |
|---|---|---|
| committer | Hans de Goede <hdegoede@redhat.com> | 2016-06-17 11:21:30 +0200 |
| commit | c6511d0142040654140bdedd6f03d43af0abba21 (patch) | |
| tree | 3f7fc866bad3e2caec35137ed50fbd7fba73f165 /exa | |
| parent | 2d6230e77348e550c90e00c007b113ce38c81d12 (diff) | |
exa: only draw valid trapezoids
Fixes freedesktop.org bug https://bugs.freedesktop.org/show_bug.cgi?id=67484
If t->bottom is close to MIN_INT, removing top can wraparound, so do the check properly.
A similar fix should also be applied to pixman.
Signed-off-by: Maarten Lankhorst <maarten.lankhorst@canonical.com>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Diffstat (limited to 'exa')
| -rw-r--r-- | exa/exa_render.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/exa/exa_render.c b/exa/exa_render.c index fc3ddea79..b24bec052 100644 --- a/exa/exa_render.c +++ b/exa/exa_render.c @@ -1141,7 +1141,8 @@ exaTrapezoids(CARD8 op, PicturePtr pSrc, PicturePtr pDst, exaPrepareAccess(pPicture->pDrawable, EXA_PREPARE_DEST); for (; ntrap; ntrap--, traps++) - (*ps->RasterizeTrapezoid) (pPicture, traps, -bounds.x1, -bounds.y1); + if (xTrapezoidValid(traps)) + (*ps->RasterizeTrapezoid) (pPicture, traps, -bounds.x1, -bounds.y1); exaFinishAccess(pPicture->pDrawable, EXA_PREPARE_DEST); xRel = bounds.x1 + xSrc - xDst; |