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436c0c8be2
In order to run under memfault, the framework is first extended to handle running concurrent tests - i.e. multi-threading. (Not that this is a requirement for memfault, instead it shares a common goal of storing per-test data). To that end all the global data is moved into a per-test context and the targets are adjusted to avoid overlap on shared, global resources (such as output files and frame buffers). In order to preserve the simplicity of the standard draw routines, the context is not passed explicitly as a parameter to the routines, but is instead attached to the cairo_t via the user_data. For the masochist, to enable the tests to be run across multiple threads simply set the environment variable CAIRO_TEST_NUM_THREADS to the desired number. In the long run, we can hope the need for memfault (runtime testing of error paths) will be mitigated by static analysis. A promising candidate for this task would appear to be http://hal.cs.berkeley.edu/cil/.
80 lines
2.5 KiB
C
80 lines
2.5 KiB
C
/*
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* Copyright © 2007 Keith Packard
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*
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* This library is free software; you can redistribute it and/or
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* modify it either under the terms of the GNU Lesser General Public
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* License version 2.1 as published by the Free Software Foundation
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* (the "LGPL") or, at your option, under the terms of the Mozilla
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* Public License Version 1.1 (the "MPL"). If you do not alter this
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* notice, a recipient may use your version of this file under either
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* the MPL or the LGPL.
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*
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* You should have received a copy of the LGPL along with this library
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* in the file COPYING-LGPL-2.1; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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* You should have received a copy of the MPL along with this library
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* in the file COPYING-MPL-1.1
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*
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* The contents of this file are subject to the Mozilla Public License
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* Version 1.1 (the "License"); you may not use this file except in
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* compliance with the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
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* OF ANY KIND, either express or implied. See the LGPL or the MPL for
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* the specific language governing rights and limitations.
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*
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* The Original Code is the cairo graphics library.
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*
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* The Initial Developer of the Original Code is Keith Packard
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*
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* Contributor(s):
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* Keith Packard <keithp@keithp.com>
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*/
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#include "cairo-test.h"
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static cairo_test_draw_function_t draw;
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static const cairo_test_t test = {
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"miter-precision",
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"test how cairo deals with small miters"
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"\ncurrent code draws inappropriate bevels at times",
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120, 100,
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draw
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};
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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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double xscale, yscale;
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cairo_set_source_rgb (cr, 1, 1, 1);
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cairo_paint (cr);
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cairo_set_source_rgb (cr, 0, 0, 0);
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cairo_set_miter_limit (cr, 100000);
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for (xscale = 1; xscale <= 1000; xscale += 999)
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for (yscale = 1; yscale <= 1000; yscale += 999)
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{
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double max_scale = xscale > yscale ? xscale : yscale;
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cairo_save (cr);
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if (xscale > 1)
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cairo_translate (cr, 50, 0);
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if (yscale > 1)
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cairo_translate (cr, 0, 50);
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cairo_scale (cr, xscale, yscale);
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cairo_set_line_width (cr, 10.0 / max_scale);
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cairo_move_to (cr, 10.0 / xscale, 10.0 / yscale);
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cairo_line_to (cr, 40.0 / xscale, 10.0 / yscale);
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cairo_line_to (cr, 10.0 / xscale, 30.0 / yscale);
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cairo_stroke (cr);
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cairo_restore (cr);
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}
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return CAIRO_TEST_SUCCESS;
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}
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int
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main (void)
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{
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return cairo_test (&test);
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}
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