diff options
| author | Mart Raudsepp <leio@gentoo.org> | 2012-09-18 08:41:53 +0300 |
|---|---|---|
| committer | Mart Raudsepp <leio@gentoo.org> | 2012-09-18 08:53:07 +0300 |
| commit | 5f7797cadeaf8a28612b9d0c394f8507eb687c34 (patch) | |
| tree | b5eb9596aa2ddd3d3151ccd361c08935dee212c4 /src/lx_exa.c | |
| parent | 4a20e8ac285cfe8a033f771ac8df25f873db9908 (diff) | |
lx_exa: Fix crash with solid fills on PictOpAdd operations
lx_check_composite has many special checks for PictOpAdd to return
successfully early, but these were done even earlier than the check
for solid fills. This resulted in lx_prepare_composite assuming
the source pixmap exists, which is not the case with solid fills.
Move the solid fill fallback checks before the others, so we are
guaranteed to always have a source pixmap in PrepareComposite and
Composite and don't crash trying to access a NULL pointer.
Also move up the mask check to do less checks in the PictOpAdd logic.
Diffstat (limited to 'src/lx_exa.c')
| -rw-r--r-- | src/lx_exa.c | 21 |
1 files changed, 11 insertions, 10 deletions
diff --git a/src/lx_exa.c b/src/lx_exa.c index bcff23e..b341c51 100644 --- a/src/lx_exa.c +++ b/src/lx_exa.c @@ -547,28 +547,33 @@ lx_check_composite(int op, PicturePtr pSrc, PicturePtr pMsk, PicturePtr pDst) if (op > PictOpAdd) GEODE_FALLBACK(("Operation %d is not supported\n", op)); + /* XXX - don't know if we can do any hwaccel on solid fills or gradient types */ + if (pSrc->pSourcePict || (pMsk && pMsk->pSourcePict)) + GEODE_FALLBACK(("Solid fills or gradient types are not supported\n")); + + if (pMsk && op == PictOpAdd) + GEODE_FALLBACK(("PictOpAdd with mask is not supported\n")); + /* FIXME: Meet this conditions from the debug for PictOpAdd. * Any Other possibilities? Add a judge for the future supplement */ if (op == PictOpAdd && pSrc->format == PICT_a8r8g8b8 && - pDst->format == PICT_a8 && !pMsk) + pDst->format == PICT_a8) return TRUE; if (op == PictOpAdd && pSrc->format == PICT_x8r8g8b8 && - pDst->format == PICT_a8 && !pMsk) + pDst->format == PICT_a8) return TRUE; if (op == PictOpAdd && pSrc->format == PICT_r5g6b5 && - pDst->format == PICT_a8 && !pMsk) + pDst->format == PICT_a8) return TRUE; if (usesPasses(op)) { + /* FIXME: Slightly misleading fallback msg when !pMsk */ if (pGeode->exaBfrOffset == 0 || !pMsk) GEODE_FALLBACK(("Multipass operation requires off-screen buffer\n")); } - if (pMsk && op == PictOpAdd) - GEODE_FALLBACK(("PictOpAdd with mask is not supported\n")); - /* Check that the filter matches what we support */ switch (pSrc->filter) { @@ -585,10 +590,6 @@ lx_check_composite(int op, PicturePtr pSrc, PicturePtr pMsk, PicturePtr pDst) if (pMsk && pMsk->transform) GEODE_FALLBACK(("Mask transforms are not supported\n")); - /* XXX - don't know if we can do any hwaccel on solid fills or gradient types */ - if (pSrc->pSourcePict || (pMsk && pMsk->pSourcePict)) - GEODE_FALLBACK(("Solid fills or gradient types are not supported\n")); - /* Keep an eye out for source rotation transforms - those we can * do something about */ |