cairo/perf/micro/stroke.c
Chris Wilson 72481acf0d perf: Compute ops per second
Provide a hook for the test to be able to compute the number of ops per
second. For instance, the glyphs test uses it to report the number of
kiloglyph per second Cairo is able to render.
2010-03-30 15:28:37 +01:00

97 lines
2.9 KiB
C

/*
* Copyright © 2006 Red Hat, Inc.
*
* Permission to use, copy, modify, distribute, and sell this software
* and its documentation for any purpose is hereby granted without
* fee, provided that the above copyright notice appear in all copies
* and that both that copyright notice and this permission notice
* appear in supporting documentation, and that the name of
* Red Hat, Inc. not be used in advertising or publicity pertaining to
* distribution of the software without specific, written prior
* permission. Red Hat, Inc. makes no representations about the
* suitability of this software for any purpose. It is provided "as
* is" without express or implied warranty.
*
* RED HAT, INC. DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS
* SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
* FITNESS, IN NO EVENT SHALL RED HAT, INC. BE LIABLE FOR ANY SPECIAL,
* INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER
* RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
* OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR
* IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*
* Author: Carl D. Worth <cworth@cworth.org>
*/
#include "cairo-perf.h"
static cairo_perf_ticks_t
do_stroke (cairo_t *cr, int width, int height, int loops)
{
cairo_arc (cr,
width/2.0, height/2.0,
width/3.0,
0, 2 * M_PI);
cairo_close_path (cr);
cairo_set_line_width (cr, width/5.0);
cairo_perf_timer_start ();
while (loops--)
cairo_stroke_preserve (cr);
cairo_perf_timer_stop ();
cairo_new_path (cr);
return cairo_perf_timer_elapsed ();
}
static void
rounded_rectangle (cairo_t *cr,
double x, double y, double w, double h,
double radius)
{
cairo_move_to (cr, x+radius, y);
cairo_arc (cr, x+w-radius, y+radius, radius, M_PI + M_PI / 2, M_PI * 2 );
cairo_arc (cr, x+w-radius, y+h-radius, radius, 0, M_PI / 2 );
cairo_arc (cr, x+radius, y+h-radius, radius, M_PI/2, M_PI );
cairo_arc (cr, x+radius, y+radius, radius, M_PI, 270 * M_PI / 180);
}
static cairo_perf_ticks_t
do_strokes (cairo_t *cr, int width, int height, int loops)
{
/* a pair of overlapping rectangles */
rounded_rectangle (cr,
2, 2, width/2. + 10, height/2. + 10,
10);
rounded_rectangle (cr,
width/2. - 10, height/2. - 10,
width/2. - 2, height/2. - 2,
10);
cairo_set_line_width (cr, 2.);
cairo_perf_timer_start ();
while (loops--)
cairo_stroke_preserve (cr);
cairo_perf_timer_stop ();
cairo_new_path (cr);
return cairo_perf_timer_elapsed ();
}
void
stroke (cairo_perf_t *perf, cairo_t *cr, int width, int height)
{
if (! cairo_perf_can_run (perf, "stroke", NULL))
return;
cairo_perf_cover_sources_and_operators (perf, "stroke", do_stroke, NULL);
cairo_perf_cover_sources_and_operators (perf, "strokes", do_strokes, NULL);
}