Files
RedBear-OS/recipes/libs/cairo/source/test/rectangle-rounding-error.c
T
vasilito ff4ff35918 feat: track all source trees in git — full fork offline-first model
Red Bear OS is a full fork. All sources must be available from git clone
with zero network access. Removed gitignore rules that excluded fetched
source trees under recipes/*/source/, local/recipes/kde/*/source/,
local/recipes/qt/*/source/, and vendor source trees.

Build artifacts (target/, build/, source.tar, *.o, *.so) remain excluded.

127291 files added — kernel, relibc, base, bootloader, pkgar, all KDE/Qt
frameworks, mesa, wayland, DRM drivers, and every other recipe source.
2026-05-14 10:55:53 +01:00

65 lines
2.2 KiB
C

/*
* Copyright © 2005 Bertram Felgenhauer
*
* 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
* the author not be used in advertising or publicity pertaining to
* distribution of the software without specific, written prior
* permission. The author makes no representations about the
* suitability of this software for any purpose. It is provided "as
* is" without express or implied warranty.
*
* THE AUTHOR DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS
* SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
* FITNESS, IN NO EVENT SHALL THE AUTHOR. 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: Bertram Felgenhauer <int-e@gmx.de>
*/
#include "cairo-test.h"
/* Test case for:
*
* https://bugs.freedesktop.org/show_bug.cgi?id=4137
*/
static cairo_test_status_t
draw (cairo_t *cr, int width, int height)
{
cairo_set_source_rgb (cr, 1, 1, 1);
cairo_paint (cr);
cairo_set_antialias (cr, CAIRO_ANTIALIAS_NONE);
cairo_set_source_rgb (cr, 0, 0, 0);
cairo_translate(cr, -300, -300);
cairo_scale(cr, 677.0/26, 677.0/26);
cairo_translate(cr, 1, 1);
/* this should draw a seamless 2x2 rectangle */
cairo_rectangle(cr, 11, 11, 1, 1);
cairo_rectangle(cr, 11, 12, 1, 1);
cairo_rectangle(cr, 12, 11, 1, 1);
cairo_rectangle(cr, 12, 12, 1, 1);
cairo_set_source_rgb(cr, 0, 0, 0);
cairo_fill(cr);
return CAIRO_TEST_SUCCESS;
}
CAIRO_TEST (rectangle_rounding_error,
"This demonstrates (or not) a rounding error that causes a gap between "
"two neighbouring rectangles.",
"trap", /* keywords */
"target=raster", /* requirements */
76, 76,
NULL, draw)