Grcov report - image-bug-710072.c

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/* -*- Mode: c; c-basic-offset: 4; indent-tabs-mode: t; tab-width: 8; -*- */

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/*

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 * Copyright 2011 Intel Corporation

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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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 * 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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 * 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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 * Author: Chris Wilson <chris@chris-wilson.co.uk>

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*/

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/*

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 * This test case aims to reproduce the misbehaviour exhibited in

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 * https://bugs.launchpad.net/ubuntu/+source/cairo/+bug/710072

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 * i.e. out of bounds rendering with the rectangular span compositor.

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*/

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#include "cairo-test.h"

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static cairo_test_status_t

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draw_aligned (cairo_t *cr, int width, int height)

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    cairo_set_source_rgb (cr, 1, 1, 1);

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    cairo_paint (cr);

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    cairo_rectangle (cr, -10, -10, 20, 20);

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    cairo_rectangle (cr, 5, 5, 20, 20);

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    cairo_set_source_rgb (cr, 0, 0, 0);

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    cairo_fill_preserve (cr);

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    cairo_set_source_rgba (cr, 1, 0, 0, .5);

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    cairo_stroke (cr);

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    return CAIRO_TEST_SUCCESS;

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static cairo_test_status_t

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3

draw_unaligned (cairo_t *cr, int width, int height)

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    cairo_set_source_rgb (cr, 1, 1, 1);

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    cairo_paint (cr);

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    cairo_rectangle (cr, -10.5, -10.5, 20, 20);

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    cairo_rectangle (cr, 5.5, 5.5, 20, 20);

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    cairo_set_source_rgb (cr, 0, 0, 0);

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    cairo_fill_preserve (cr);

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    cairo_set_source_rgba (cr, 1, 0, 0, .5);

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3

    cairo_stroke (cr);

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    return CAIRO_TEST_SUCCESS;

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CAIRO_TEST (image_bug_710072_aligned,

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	    "Tests a bug where we may compute spans greater than bounded extents",

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	    "extents, fill, stroke", /* keywords */

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	    NULL, /* requirements */

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	    15, 15,

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	    NULL, draw_aligned)

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CAIRO_TEST (image_bug_710072_unaligned,

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	    "Tests a bug where we may compute spans greater than bounded extents",

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	    "extents, fill, stroke", /* keywords */

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	    NULL, /* requirements */

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	    15, 15,

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	    NULL, draw_unaligned)