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/*
* Copyright © 2006 Red Hat, Inc.
*
*
* Permission is hereby granted, free of charge, to any person
* obtaining a copy of this software and associated documentation
* files (the "Software"), to deal in the Software without
* restriction, including without limitation the rights to use, copy,
* modify, merge, publish, distribute, sublicense, and/or sell copies
* of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*
* Author: Carl D. Worth <cworth@cworth.org>
*/
#include "cairo-perf.h"
/* This test case is designed to illustrate a performance bug that
* exists in cairo in which using cairo_stroke is much slower than
* cairo_fill to draw an identical figure, (and in particular a figure
* that is much more natural to draw with cairo_stroke). The figure is
* a 100x100 square outline 1-pixel wide, nicely pixel aligned.
*
* The performance bug should affect any path whose resulting contour
* consists only of pixel-aligned horizontal and vertical elements.
*
* Initial testing on on machine shows stroke as 5x slower than fill
* for the xlib backend and 16x slower for the image backend.
*/
static cairo_perf_ticks_t
box_outline_stroke (cairo_t *cr, int width, int height, int loops)
{
cairo_set_source_rgb (cr, 0, 0, 1); /* blue */
cairo_paint (cr);
cairo_rectangle (cr,
1.5, 1.5,
width - 3, height - 3);
cairo_set_line_width (cr, 1.0);
cairo_set_source_rgb (cr, 1, 0, 0); /* red */
cairo_perf_timer_start ();
while (loops--)
cairo_stroke_preserve (cr);
cairo_perf_timer_stop ();
cairo_new_path (cr);
return cairo_perf_timer_elapsed ();
}
static cairo_perf_ticks_t
box_outline_fill (cairo_t *cr, int width, int height, int loops)
{
cairo_set_source_rgb (cr, 0, 0, 1); /* blue */
cairo_paint (cr);
cairo_rectangle (cr,
1.0, 1.0,
width - 2, height - 2);
cairo_rectangle (cr,
2.0, 2.0,
width - 4, height - 4);
cairo_set_fill_rule (cr, CAIRO_FILL_RULE_EVEN_ODD);
cairo_set_source_rgb (cr, 0, 1, 0); /* green */
cairo_perf_timer_start ();
while (loops--)
cairo_fill_preserve (cr);
cairo_perf_timer_stop ();
cairo_new_path (cr);
return cairo_perf_timer_elapsed ();
}
void
box_outline (cairo_perf_t *perf, cairo_t *cr, int width, int height)
{
if (! cairo_perf_can_run (perf, "box-outline", NULL))
return;
cairo_perf_run (perf, "box-outline-stroke", box_outline_stroke, NULL);
cairo_perf_run (perf, "box-outline-fill", box_outline_fill, NULL);
}
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