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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/.
126 lines
3.5 KiB
C
126 lines
3.5 KiB
C
/*
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* Copyright © 2006 Mozilla Corporation
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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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* Mozilla Corporation 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. Mozilla Corporation 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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* MOZILLA CORPORATION 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 MOZILLA CORPORATION 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: Vladimir Vukicevic <vladimir@pobox.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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#define SRC_WIDTH 2048
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#define SRC_HEIGHT 32
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static const cairo_test_t test = {
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"surface-pattern-big-scale-down",
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"Test scaled-down transformed not-repeated surface patterns with large images and offsets",
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512, 16,
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draw
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};
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static void
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setup_source_surface (cairo_surface_t *surface, int w, int h)
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{
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cairo_t *cr = cairo_create (surface);
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cairo_set_source_rgb (cr, 1.0, 0.0, 0.0);
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cairo_rectangle (cr, 0, 0, w/2, h/2);
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cairo_fill (cr);
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cairo_set_source_rgb (cr, 0.0, 1.0, 0.0);
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cairo_rectangle (cr, w/2, 0, w/2, h/2);
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cairo_fill (cr);
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cairo_set_source_rgb (cr, 0.0, 0.0, 1.0);
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cairo_rectangle (cr, 0, h/2, w/2, h/2);
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cairo_fill (cr);
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cairo_set_source_rgb (cr, 1.0, 1.0, 0.0);
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cairo_rectangle (cr, w/2, h/2, w/2, h/2);
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cairo_fill (cr);
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cairo_destroy (cr);
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}
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static void
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draw_n (cairo_t *cr, cairo_pattern_t *pat, double dest_size, int n)
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{
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cairo_matrix_t mat;
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cairo_matrix_init_scale (&mat, SRC_WIDTH / dest_size, SRC_HEIGHT / dest_size);
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cairo_matrix_translate (&mat, n * -dest_size, 0.0);
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cairo_pattern_set_matrix (pat, &mat);
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cairo_set_source (cr, pat);
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cairo_new_path (cr);
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cairo_rectangle (cr, n * dest_size, 0.0, dest_size, dest_size);
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cairo_fill (cr);
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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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cairo_surface_t *surface;
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cairo_pattern_t *pat;
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cairo_set_source_rgb (cr, 0, 0, 0);
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cairo_paint (cr);
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surface = cairo_image_surface_create (CAIRO_FORMAT_RGB24, SRC_WIDTH, SRC_HEIGHT);
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setup_source_surface (surface, SRC_WIDTH, SRC_HEIGHT);
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pat = cairo_pattern_create_for_surface (surface);
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cairo_surface_destroy (surface);
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/* We want to draw at a position such that n * SRC_WIDTH * (SRC_WIDTH/16.0) > 32768.
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* x = n * 16.
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*
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* To show the bug, we want to draw on either side of the boundary;
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* in our case here, n = 16 results in 32768, and n = 17 results in > 32768.
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*
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* Drawing at 16 and 17 is sufficient to show the problem.
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*/
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#if 1
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/* n = 16 */
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draw_n (cr, pat, 16.0, 16);
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/* n = 17 */
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draw_n (cr, pat, 16.0, 17);
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#else
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{
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int n;
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for (n = 0; n < 32; n++)
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draw_n (cr, pat, 16.0, n);
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}
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#endif
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cairo_pattern_destroy (pat);
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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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