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Avoid using substituted surfaces for xlib operations.

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Detect when a substitute image surface is returned for a solid pattern,
and avoid mixed image/xlib composite operations. This can happen for example
if there is a resource allocation failure during creating a similar surface.
This commit is contained in:
Chris Wilson 2007-03-16 20:04:26 +00:00 • committed by Carl Worth
parent 751976970b
commit ea4945850a
1 changed files with 6 additions and 1 deletions
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7
src/cairo-xlib-surface.c
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@ -1217,7 +1217,12 @@ _recategorize_composite_operation (cairo_xlib_surface_t *dst,
{
cairo_bool_t is_integer_translation =
_cairo_matrix_is_integer_translation (&src_attr->matrix, NULL, NULL);
cairo_bool_t needs_alpha_composite =
cairo_bool_t needs_alpha_composite;
if (!_cairo_surface_is_xlib (&src->base))
return DO_UNSUPPORTED;
needs_alpha_composite =
_operator_needs_alpha_composite (op, _surface_has_alpha (src));
if (!have_mask &&