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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>
*/
/* This is a variant on many strokes where we precompute
* a simplified stroke-to-path.
* When we have a real stroke-to-path, it would useful to compare the cost
* of stroking vs filling the "identical" paths.
*/
#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_perf_ticks_t
do_many_fills_ha (cairo_t *cr, int width, int height, int loops)
{
int count;
state = 0xc0ffee;
for (count = 0; count < 1000; count++) {
double y = floor (uniform_random (0, height));
double x = floor (uniform_random (0, width));
cairo_rectangle (cr, x, y, ceil (uniform_random (0, width)) - x, 2);
}
cairo_perf_timer_start ();
while (loops--)
cairo_fill_preserve (cr);
cairo_perf_timer_stop ();
cairo_new_path (cr);
return cairo_perf_timer_elapsed ();
}
static cairo_perf_ticks_t
do_many_fills_h (cairo_t *cr, int width, int height, int loops)
{
int count;
state = 0xc0ffee;
for (count = 0; count < 1000; count++) {
double y = uniform_random (0, height);
double x = uniform_random (0, width);
cairo_rectangle (cr, x, y, uniform_random (0, width) - x, 2);
}
cairo_perf_timer_start ();
while (loops--)
cairo_fill_preserve (cr);
cairo_perf_timer_stop ();
cairo_new_path (cr);
return cairo_perf_timer_elapsed ();
}
static cairo_perf_ticks_t
do_many_fills_va (cairo_t *cr, int width, int height, int loops)
{
int count;
state = 0xc0ffee;
for (count = 0; count < 1000; count++) {
double x = floor (uniform_random (0, width));
double y = floor (uniform_random (0, height));
cairo_rectangle (cr, x, y, 2, ceil (uniform_random (0, height) - y));
}
cairo_perf_timer_start ();
while (loops--)
cairo_fill_preserve (cr);
cairo_perf_timer_stop ();
cairo_new_path (cr);
return cairo_perf_timer_elapsed ();
}
static cairo_perf_ticks_t
do_many_fills_v (cairo_t *cr, int width, int height, int loops)
{
int count;
state = 0xc0ffee;
for (count = 0; count < 1000; count++) {
double x = uniform_random (0, width);
double y = uniform_random (0, height);
cairo_rectangle (cr, x, y, 2, uniform_random (0, height) - y);
}
cairo_perf_timer_start ();
while (loops--)
cairo_fill_preserve (cr);
cairo_perf_timer_stop ();
cairo_new_path (cr);
return cairo_perf_timer_elapsed ();
}
static cairo_perf_ticks_t
do_many_fills (cairo_t *cr, int width, int height, int loops)
{
int count;
/* lots and lots of overlapping stroke-like fills */
state = 0xc0ffee;
for (count = 0; count < 1000; count++) {
cairo_save (cr);
cairo_translate (cr,
uniform_random (0, width),
uniform_random (0, height));
cairo_rotate (cr, uniform_random (-M_PI,M_PI));
cairo_rectangle (cr, 0, 0, uniform_random (0, width), 2);
cairo_restore (cr);
}
cairo_perf_timer_start ();
while (loops--)
cairo_fill_preserve (cr);
cairo_perf_timer_stop ();
cairo_new_path (cr);
return cairo_perf_timer_elapsed ();
}
void
many_fills (cairo_perf_t *perf, cairo_t *cr, int width, int height)
{
if (! cairo_perf_can_run (perf, "many-fills", NULL))
return;
cairo_perf_run (perf, "many-fills-halign", do_many_fills_ha, NULL);
cairo_perf_run (perf, "many-fills-valign", do_many_fills_va, NULL);
cairo_perf_run (perf, "many-fills-horizontal", do_many_fills_h, NULL);
cairo_perf_run (perf, "many-fills-vertical", do_many_fills_v, NULL);
cairo_perf_run (perf, "many-fills-random", do_many_fills, NULL);
}
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