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Diffstat (limited to 'test/leaky-polygon.c')
-rw-r--r-- | test/leaky-polygon.c | 85 |
1 files changed, 0 insertions, 85 deletions
diff --git a/test/leaky-polygon.c b/test/leaky-polygon.c deleted file mode 100644 index 0ea7094c9..000000000 --- a/test/leaky-polygon.c +++ /dev/null @@ -1,85 +0,0 @@ -/* - * Copyright © 2005 Red Hat, Inc. - * - * 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 - * Red Hat, Inc. not be used in advertising or publicity pertaining to - * distribution of the software without specific, written prior - * permission. Red Hat, Inc. makes no representations about the - * suitability of this software for any purpose. It is provided "as - * is" without express or implied warranty. - * - * RED HAT, INC. DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS - * SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND - * FITNESS, IN NO EVENT SHALL RED HAT, INC. 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: Carl D. Worth <cworth@cworth.org> - */ - -/* Bug history - * - * 2005-01-07 Carl Worth <cworth@cworth.org> - * - * Bug reported: - * - * From: Chris <fltk@functionalfuture.com> - * Subject: [cairo] Render to image buffer artifacts - * To: cairo@cairographics.org - * Date: Fri, 07 Jan 2005 02:22:28 -0500 - * - * I've attached the code and image that shows this off. Scaling at - * different levels seems to change the corruption. - * - * For some reason there are artifacts in the alpha channel. I don't know - * if that's the only place, but the alpha channel looks bad. - * - * If you run the code and parse the attached image, directing stdout to a - * file, you can see in the lower left corner there are alpha values where - * it should be transparent. - * [...] - * - * 2005-01-11 Carl Worth <cworth@cworth.org> - * - * I trimmed the original test case down to the code that appears here. - * - */ - -#include "cairo-test.h" - -#define WIDTH 21 -#define HEIGHT 21 - -static cairo_test_status_t -draw (cairo_t *cr, int width, int height) -{ - /* We draw in the default black, so paint white first. */ - cairo_save (cr); - cairo_set_source_rgb (cr, 1.0, 1.0, 1.0); /* white */ - cairo_paint (cr); - cairo_restore (cr); - - cairo_scale (cr, 1.0/(1<<16), 1.0/(1<<16)); - - cairo_move_to (cr, 131072,39321); - cairo_line_to (cr, 1103072,1288088); - cairo_line_to (cr, 1179648,1294990); - cairo_close_path (cr); - - cairo_fill (cr); - - return CAIRO_TEST_SUCCESS; -} - -CAIRO_TEST (leaky_polygon, - "Exercises a corner case in the trapezoid rasterization in which pixels outside the trapezoids received a non-zero alpha", - "fill, trap", /* keywords */ - NULL, /* requirements */ - WIDTH, HEIGHT, - NULL, draw) |