gfx/cairo/premultiply-alpha-solid-gradients.patch@97036ab72558
gfx/cairo/premultiply-alpha-solid-gradients.patch
Tue, 06 Jan 2015 21:39:09 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Tue, 06 Jan 2015 21:39:09 +0100
- branch
- TOR_BUG_9701
- changeset 8
- 97036ab72558
- permissions
- -rw-r--r--
Conditionally force memory storage according to privacy.thirdparty.isolate;
This solves Tor bug #9701, complying with disk avoidance documented in
https://www.torproject.org/projects/torbrowser/design/#disk-avoidance.
1 Fix single and multi-stop solid gradients by multiplying by the alpha component. r=roc
3 This cairo commit that caused the problem: 2d790daa957471670f4ae0d3b22da89e4ee7111f.
4 It was merged into mozilla-central with 1effb72d30cf
6 diff --git a/gfx/cairo/cairo/src/cairo-pattern.c b/gfx/cairo/cairo/src/cairo-pattern.c
7 --- a/gfx/cairo/cairo/src/cairo-pattern.c
8 +++ b/gfx/cairo/cairo/src/cairo-pattern.c
9 @@ -2262,8 +2262,17 @@ _cairo_pattern_acquire_surface (const ca
11 if (src->n_stops)
12 {
13 + cairo_color_t color;
14 +
15 + /* multiply by alpha */
16 + _cairo_color_init_rgba (&color,
17 + src->stops->color.red,
18 + src->stops->color.green,
19 + src->stops->color.blue,
20 + src->stops->color.alpha);
21 +
22 _cairo_pattern_init_solid (&solid,
23 - &src->stops->color,
24 + &color,
25 CAIRO_CONTENT_COLOR_ALPHA);
26 }
27 else
28 @@ -2295,9 +2304,17 @@ _cairo_pattern_acquire_surface (const ca
29 }
30 if (i == src->n_stops) {
31 cairo_solid_pattern_t solid;
32 + cairo_color_t color;
33 +
34 + /* multiply by alpha */
35 + _cairo_color_init_rgba (&color,
36 + src->stops->color.red,
37 + src->stops->color.green,
38 + src->stops->color.blue,
39 + src->stops->color.alpha);
41 _cairo_pattern_init_solid (&solid,
42 - &src->stops->color,
43 + &color,
44 CAIRO_CONTENT_COLOR_ALPHA);
46 status =
