Grcov report - subimage

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/*

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 * Copyright © 2006 Red Hat, Inc.

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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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 * 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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 * Author: Carl D. Worth <cworth@cworth.org>

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*/

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#include "cairo-perf.h"

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/* This case exposes a performance bug found by Christopher "Monty"

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 * Montgomery in that copying a tiny portion of an image surface to an

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 * X surface causes the entire image surface to be copied to an

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 * intermediate surface.

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 * If the performance bug is fixed, then the time this test takes

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 * should be independent of the source and destination surface sizes.

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*/

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static cairo_time_t

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do_subimage_copy (cairo_t *cr, int width, int height, int loops)

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    cairo_rectangle (cr, 2, 2, 4, 4);

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    cairo_set_operator (cr, CAIRO_OPERATOR_SOURCE);

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    cairo_perf_timer_start ();

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    while (loops--)

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	cairo_fill_preserve (cr);

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    cairo_perf_timer_stop ();

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    cairo_new_path (cr);

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    return cairo_perf_timer_elapsed ();

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cairo_bool_t

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subimage_copy_enabled (cairo_perf_t *perf)

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    return cairo_perf_can_run (perf, "subimage-copy", NULL);

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void

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subimage_copy (cairo_perf_t *perf, cairo_t *cr, int width, int height)

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    cairo_surface_t *image;

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    cairo_t *cr2;

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    cairo_set_source_rgb (cr, 0, 0, 1); /* blue */

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    cairo_paint (cr);

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    image = cairo_image_surface_create (CAIRO_FORMAT_ARGB32, width, height);

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    cr2 = cairo_create (image);

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    cairo_set_source_rgb (cr2, 1, 0, 0); /* red */

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    cairo_paint (cr2);

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    cairo_destroy (cr2);

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    cairo_set_source_surface (cr, image, 0, 0);

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    cairo_surface_destroy (image);

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    cairo_perf_run (perf, "subimage-copy", do_subimage_copy, NULL);

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