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/*
* Copyright © 2011 Intel Corporation
*
* 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: Chris Wilson <chris@chris-wilson.co.uk>
*/
#include "cairo-perf.h"
static const double m_1_sqrt_3 = 0.577359269;
static void
T (cairo_t *cr, int size)
{
cairo_move_to (cr, 0, 0);
cairo_line_to (cr, size, 0);
cairo_line_to (cr, size/2, size*m_1_sqrt_3);
size /= 2;
if (size >= 4) {
T (cr, size);
cairo_save (cr); {
cairo_translate (cr, size, 0);
T (cr, size);
} cairo_restore (cr);
cairo_save (cr); {
cairo_translate (cr, size/2, size*m_1_sqrt_3);
T (cr, size);
} cairo_restore (cr);
}
}
static cairo_time_t
draw (cairo_t *cr, int width, int height, int loops)
{
int t_height = height/2;
int t_width = t_height / m_1_sqrt_3;
cairo_set_source_rgb (cr, 1, 1, 1);
cairo_paint (cr);
cairo_set_source_rgb (cr, 0, 0, 0);
cairo_set_line_width (cr, 1.);
cairo_perf_timer_start ();
while (loops--) {
cairo_save (cr);
T (cr, t_width);
cairo_translate (cr, 0, height);
cairo_scale (cr, 1, -1);
T (cr, t_width);
cairo_stroke (cr);
cairo_restore (cr);
}
cairo_perf_timer_stop ();
return cairo_perf_timer_elapsed ();
}
cairo_bool_t
sierpinski_enabled (cairo_perf_t *perf)
{
return cairo_perf_can_run (perf, "sierpinski", NULL);
}
void
sierpinski (cairo_perf_t *perf, cairo_t *cr, int width, int height)
{
cairo_perf_run (perf, "sierpinski", draw, NULL);
}
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