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54c8e8ccfc
The bug may be in only the fast-path, but future bugs may lie elsewhere. Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
149 lines
4.4 KiB
C
149 lines
4.4 KiB
C
/* -*- Mode: c; c-basic-offset: 4; indent-tabs-mode: t; tab-width: 8; -*- */
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/*
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* Copyright 2011 Red Hat Inc.
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*
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* Permission is hereby granted, free of charge, to any person
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* obtaining a copy of this software and associated documentation
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* files (the "Software"), to deal in the Software without
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* restriction, including without limitation the rights to use, copy,
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* modify, merge, publish, distribute, sublicense, and/or sell copies
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* of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be
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* included in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
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* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
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* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*
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* Author: Benjamin Otte <otte@redhat.com>
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*/
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/*
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* Test case taken from the WebKit test suite, failure originally reported
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* by Zan Dobersek <zandobersek@gmail.com>. WebKit test is
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* LayoutTests/canvas/philip/tests/2d.path.rect.selfintersect.html
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*/
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#include "cairo-test.h"
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#include <math.h>
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#define LINE_WIDTH 60
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#define SIZE 100
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#define RECT_SIZE 10
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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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/* fill with green so RGB and RGBA tests can share the ref image */
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cairo_set_source_rgb (cr, 0, 1, 0);
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cairo_paint (cr);
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/* red to see eventual bugs immediately */
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cairo_set_source_rgb (cr, 1, 0, 0);
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/* big line width */
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cairo_set_line_width (cr, LINE_WIDTH);
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/* rectangle that is smaller than the line width in center of image */
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cairo_rectangle (cr,
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(SIZE - RECT_SIZE) / 2,
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(SIZE - RECT_SIZE) / 2,
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RECT_SIZE,
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RECT_SIZE);
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cairo_stroke (cr);
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return CAIRO_TEST_SUCCESS;
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}
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/* and again slightly offset to trigger another path */
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static cairo_test_status_t
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draw_offset (cairo_t *cr, int width, int height)
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{
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cairo_translate (cr, .5, .5);
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return draw (cr, width, height);
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}
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static cairo_test_status_t
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draw_rotated (cairo_t *cr, int width, int height)
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{
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cairo_translate (cr, SIZE/2, SIZE/2);
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cairo_rotate (cr, M_PI/4);
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cairo_translate (cr, -SIZE/2, -SIZE/2);
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return draw (cr, width, height);
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}
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static cairo_test_status_t
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draw_flipped (cairo_t *cr, int width, int height)
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{
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cairo_translate (cr, SIZE/2, SIZE/2);
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cairo_scale (cr, -1, 1);
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cairo_translate (cr, -SIZE/2, -SIZE/2);
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return draw (cr, width, height);
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}
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static cairo_test_status_t
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draw_flopped (cairo_t *cr, int width, int height)
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{
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cairo_translate (cr, SIZE/2, SIZE/2);
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cairo_scale (cr, 1, -1);
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cairo_translate (cr, -SIZE/2, -SIZE/2);
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return draw (cr, width, height);
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}
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static cairo_test_status_t
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draw_dashed (cairo_t *cr, int width, int height)
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{
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const double dashes[] = { 4 };
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cairo_set_dash (cr, dashes, 1, 0);
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cairo_set_line_cap (cr, CAIRO_LINE_CAP_BUTT);
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return draw (cr, width, height);
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}
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CAIRO_TEST (line_width_overlap,
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"Test overlapping lines due to large line width",
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"stroke", /* keywords */
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NULL, /* requirements */
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SIZE, SIZE,
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NULL, draw)
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CAIRO_TEST (line_width_overlap_offset,
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"Test overlapping lines due to large line width",
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"stroke", /* keywords */
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NULL, /* requirements */
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SIZE, SIZE,
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NULL, draw_offset)
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CAIRO_TEST (line_width_overlap_rotated,
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"Test overlapping lines due to large line width",
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"stroke", /* keywords */
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NULL, /* requirements */
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SIZE, SIZE,
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NULL, draw_rotated)
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CAIRO_TEST (line_width_overlap_flipped,
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"Test overlapping lines due to large line width",
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"stroke", /* keywords */
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NULL, /* requirements */
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SIZE, SIZE,
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NULL, draw_flipped)
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CAIRO_TEST (line_width_overlap_flopped,
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"Test overlapping lines due to large line width",
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"stroke", /* keywords */
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NULL, /* requirements */
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SIZE, SIZE,
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NULL, draw_flopped)
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CAIRO_TEST (line_width_overlap_dashed,
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"Test overlapping lines due to large line width",
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"stroke", /* keywords */
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NULL, /* requirements */
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SIZE, SIZE,
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NULL, draw_dashed)
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