From 530ffd0b7d3c39757b20f00716e486b5caf89aff Mon Sep 17 00:00:00 2001 From: sanine Date: Wed, 12 Oct 2022 12:03:23 -0500 Subject: add cairo --- libs/cairo-1.16.0/test/self-copy-overlap.c | 54 ++++++++++++++++++++++++++++++ 1 file changed, 54 insertions(+) create mode 100644 libs/cairo-1.16.0/test/self-copy-overlap.c (limited to 'libs/cairo-1.16.0/test/self-copy-overlap.c') diff --git a/libs/cairo-1.16.0/test/self-copy-overlap.c b/libs/cairo-1.16.0/test/self-copy-overlap.c new file mode 100644 index 0000000..6e3b39c --- /dev/null +++ b/libs/cairo-1.16.0/test/self-copy-overlap.c @@ -0,0 +1,54 @@ +/* + * Copyright 2008 Chris Wilson + * + * Permission to use, copy, modify, distribute, and sell this software + * and its documentation for any purpose is hereby granted without + * fee, provided that the above copyright notice appear in all copies + * and that both that copyright notice and this permission notice + * appear in supporting documentation, and that the name of + * Chris Wilson not be used in advertising or publicity pertaining to + * distribution of the software without specific, written prior + * permission. Chris Wilson makes no representations about the + * suitability of this software for any purpose. It is provided "as + * is" without express or implied warranty. + * + * CHRIS WILSON DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS + * SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND + * FITNESS, IN NO EVENT SHALL CHRIS WILSON BE LIABLE FOR ANY SPECIAL, + * INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER + * RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION + * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR + * IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + * + * Author: Chris Wilson + */ + +/* Question: are patterns mutable? The answer depends on who you ask... */ + +#include "cairo-test.h" + +/* This test is only interesting if the target has alpha */ +static cairo_test_status_t +draw (cairo_t *cr, int width, int height) +{ + cairo_set_source_rgba (cr, 0, 0, 0, .01); + cairo_paint (cr); + + cairo_set_source_surface (cr, cairo_get_target (cr), 1, 1); + cairo_paint (cr); + + return CAIRO_TEST_SUCCESS; +} + +/* + * XFAIL: vector surfaces take snapshot of patterns in contrast to the raster + * backends which don't. One solution would be to clone overlapping areas of + * dst/source, so patterns were effectively snapshotted across all backends. + */ +CAIRO_TEST (self_copy_overlap, + "Tests painting to itself using itself as the source" + "\nBackends treat this case inconsistently---vector backends are creating snapshots.", + "self-copy", /* keywords */ + NULL, /* requirements */ + 200, 200, + NULL, draw) -- cgit v1.2.1