mirror of
https://github.com/archlinuxarm/PKGBUILDs.git
synced 2024-11-28 22:57:37 +00:00
40 lines
1.3 KiB
Diff
40 lines
1.3 KiB
Diff
|
From 99427c3f4f6ce7ce3c95c4caa4d2b8ff7c0093d9 Mon Sep 17 00:00:00 2001
|
||
|
|
From: Behdad Esfahbod <behdad@behdad.org>
|
||
|
|
Date: Tue, 12 Sep 2017 01:35:15 -0400
|
||
|
|
Subject: Handle SOURCE and CLEAR operators when painting color glyphs
|
||
|
|
|
||
|
|
In cairo, most operators are composited this way:
|
||
|
|
|
||
|
|
((src IN mask) OP dst) LERP_clip dst
|
||
|
|
|
||
|
|
but SOURCE and CLEAR operators are composited this way:
|
||
|
|
|
||
|
|
(src OP dst) LERP_(clip IN mask) dst
|
||
|
|
|
||
|
|
(why is this not specified anywhere in the docs or source tree?)
|
||
|
|
|
||
|
|
With color glyphs, we were not special-casing SOURCE and CLEAR.
|
||
|
|
We do now.
|
||
|
|
|
||
|
|
Fixes https://bugs.freedesktop.org/show_bug.cgi?id=102661
|
||
|
|
|
||
|
|
diff --git a/src/cairo-surface.c b/src/cairo-surface.c
|
||
|
|
index 6f25bd7..35c63d7 100644
|
||
|
|
--- a/src/cairo-surface.c
|
||
|
|
+++ b/src/cairo-surface.c
|
||
|
|
@@ -2571,7 +2571,10 @@ composite_one_color_glyph (cairo_surface_t *surface,
|
||
|
|
pattern = cairo_pattern_create_for_surface ((cairo_surface_t *)glyph_surface);
|
||
|
|
cairo_matrix_init_translate (&matrix, - x, - y);
|
||
|
|
cairo_pattern_set_matrix (pattern, &matrix);
|
||
|
|
- status = surface->backend->paint (surface, op, pattern, clip);
|
||
|
|
+ if (op == CAIRO_OPERATOR_SOURCE || op == CAIRO_OPERATOR_CLEAR)
|
||
|
|
+ status = surface->backend->mask (surface, op, pattern, pattern, clip);
|
||
|
|
+ else
|
||
|
|
+ status = surface->backend->paint (surface, op, pattern, clip);
|
||
|
|
}
|
||
|
|
|
||
|
|
return status;
|
||
|
|
--
|
||
|
|
cgit v0.10.2
|
||
|
|
|