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e90073f7dd
Avoid calling libtool to link every single test case, by building just one binary from all the sources. This binary is then given the task of choosing tests to run (based on user selection and individual test requirement), forking each test into its own process and accumulating the results.
85 lines
2.9 KiB
C
85 lines
2.9 KiB
C
/*
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* Copyright © 2005 Red Hat, Inc.
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*
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* Permission to use, copy, modify, distribute, and sell this software
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* and its documentation for any purpose is hereby granted without
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* fee, provided that the above copyright notice appear in all copies
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* and that both that copyright notice and this permission notice
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* appear in supporting documentation, and that the name of
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* Red Hat, Inc. not be used in advertising or publicity pertaining to
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* distribution of the software without specific, written prior
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* permission. Red Hat, Inc. makes no representations about the
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* suitability of this software for any purpose. It is provided "as
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* is" without express or implied warranty.
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*
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* RED HAT, INC. DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS
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* SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
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* FITNESS, IN NO EVENT SHALL RED HAT, INC. BE LIABLE FOR ANY SPECIAL,
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* INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER
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* RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
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* OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR
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* IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*
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* Author: Carl D. Worth <cworth@cworth.org>
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*/
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/* Bug history
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*
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* 2005-01-07 Carl Worth <cworth@cworth.org>
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*
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* Bug reported:
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*
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* From: Chris <fltk@functionalfuture.com>
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* Subject: [cairo] Render to image buffer artifacts
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* To: cairo@cairographics.org
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* Date: Fri, 07 Jan 2005 02:22:28 -0500
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*
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* I've attached the code and image that shows this off. Scaling at
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* different levels seems to change the corruption.
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*
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* For some reason there are artifacts in the alpha channel. I don't know
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* if that's the only place, but the alpha channel looks bad.
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*
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* If you run the code and parse the attached image, directing stdout to a
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* file, you can see in the lower left corner there are alpha values where
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* it should be transparent.
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* [...]
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*
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* 2005-01-11 Carl Worth <cworth@cworth.org>
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*
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* I trimmed the original test case down to the code that appears here.
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*
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*/
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#include "cairo-test.h"
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#define WIDTH 21
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#define HEIGHT 21
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static cairo_test_status_t
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draw (cairo_t *cr, int width, int height)
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{
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/* We draw in the default black, so paint white first. */
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cairo_save (cr);
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cairo_set_source_rgb (cr, 1.0, 1.0, 1.0); /* white */
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cairo_paint (cr);
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cairo_restore (cr);
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cairo_scale (cr, 1.0/(1<<16), 1.0/(1<<16));
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cairo_move_to (cr, 131072,39321);
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cairo_line_to (cr, 1103072,1288088);
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cairo_line_to (cr, 1179648,1294990);
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cairo_close_path (cr);
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cairo_fill (cr);
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return CAIRO_TEST_SUCCESS;
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}
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CAIRO_TEST (leaky_polygon,
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"Exercises a corner case in the trapezoid rasterization in which pixels outside the trapezoids received a non-zero alpha",
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"fill, trap", /* keywords */
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NULL, /* requirements */
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WIDTH, HEIGHT,
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NULL, draw)
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