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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 uint32_t state;
static double
uniform_random (double minval, double maxval)
{
static uint32_t const poly = 0x9a795537U;
uint32_t n = 32;
while (n-->0)
state = 2*state < state ? (2*state ^ poly) : 2*state;
return minval + state * (maxval - minval) / 4294967296.0;
}
static cairo_time_t
do_curve_stroke (cairo_t *cr, int width, int height, int loops)
{
state = 0xc0ffee;
cairo_set_line_width (cr, 2.);
cairo_perf_timer_start ();
while (loops--) {
double x1 = uniform_random (0, width);
double x2 = uniform_random (0, width);
double x3 = uniform_random (0, width);
double y1 = uniform_random (0, height);
double y2 = uniform_random (0, height);
double y3 = uniform_random (0, height);
cairo_move_to (cr, uniform_random (0, width), uniform_random (0, height));
cairo_curve_to (cr, x1, y1, x2, y2, x3, y3);
cairo_stroke(cr);
}
cairo_perf_timer_stop ();
return cairo_perf_timer_elapsed ();
}
static cairo_time_t
do_curve_fill (cairo_t *cr, int width, int height, int loops)
{
state = 0xc0ffee;
cairo_perf_timer_start ();
while (loops--) {
double x0 = uniform_random (0, width);
double x1 = uniform_random (0, width);
double x2 = uniform_random (0, width);
double x3 = uniform_random (0, width);
double xm = uniform_random (0, width);
double xn = uniform_random (0, width);
double y0 = uniform_random (0, height);
double y1 = uniform_random (0, height);
double y2 = uniform_random (0, height);
double y3 = uniform_random (0, height);
double ym = uniform_random (0, height);
double yn = uniform_random (0, height);
cairo_move_to (cr, xm, ym);
cairo_curve_to (cr, x1, y1, x2, y2, xn, yn);
cairo_curve_to (cr, x3, y3, x0, y0, xm, ym);
cairo_close_path (cr);
cairo_fill(cr);
}
cairo_perf_timer_stop ();
return cairo_perf_timer_elapsed ();
}
cairo_bool_t
curve_enabled (cairo_perf_t *perf)
{
return cairo_perf_can_run (perf, "curve", NULL);
}
void
curve (cairo_perf_t *perf, cairo_t *cr, int width, int height)
{
cairo_set_source_rgb (cr, 1., 1., 1.);
cairo_perf_run (perf, "curve-stroked", do_curve_stroke, NULL);
cairo_perf_run (perf, "curve-filled", do_curve_fill, NULL);
}
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