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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 in
* drawing very long lines, where most of the line is out of bounds of
* the destination surface, (but some portion of the line is
* visibile). These results are in the "long-lines-uncropped" report.
*
* For comparison, this test also renders the visible portions of the
* same lines, (this is the "long-lines-cropped" report).
*/
typedef enum {
LONG_LINES_CROPPED = 0x1,
LONG_LINES_ONCE = 0x2,
} long_lines_crop_t;
#define NUM_LINES 20
#define LONG_FACTOR 50.0
static cairo_time_t
do_long_lines (cairo_t *cr, int width, int height, int loops, long_lines_crop_t crop)
{
int i;
double x, y, dx, dy, min_x, min_y, max_x, max_y;
double outer_width, outer_height;
cairo_save (cr);
cairo_translate (cr, width / 2, height / 2);
if (crop & LONG_LINES_CROPPED) {
outer_width = width;
outer_height = height;
cairo_set_source_rgb (cr, 0.0, 1.0, 0.0); /* green */
} else {
outer_width = LONG_FACTOR * width;
outer_height = LONG_FACTOR * height;
cairo_set_source_rgb (cr, 1.0, 0.0, 0.0); /* red */
}
min_x = x = - outer_width / 2.0;
min_y = y = - outer_height / 2.0;
max_x = outer_width / 2.0;
max_y = outer_height / 2.0;
dx = outer_width / NUM_LINES;
dy = outer_height / NUM_LINES;
cairo_perf_timer_start ();
while (loops--) {
for (i = 0; i <= NUM_LINES; i++) {
cairo_move_to (cr, 0, 0);
cairo_line_to (cr, x, min_y);
if ((crop & LONG_LINES_ONCE) == 0)
cairo_stroke (cr);
cairo_move_to (cr, 0, 0);
cairo_line_to (cr, x, max_y);
if ((crop & LONG_LINES_ONCE) == 0)
cairo_stroke (cr);
cairo_move_to (cr, 0, 0);
cairo_line_to (cr, min_x, y);
if ((crop & LONG_LINES_ONCE) == 0)
cairo_stroke (cr);
cairo_move_to (cr, 0, 0);
cairo_line_to (cr, max_x, y);
if ((crop & LONG_LINES_ONCE) == 0)
cairo_stroke (cr);
x += dx;
y += dy;
}
if (crop & LONG_LINES_ONCE)
cairo_stroke (cr);
}
cairo_perf_timer_stop ();
cairo_restore (cr);
return cairo_perf_timer_elapsed ();
}
static cairo_time_t
long_lines_uncropped (cairo_t *cr, int width, int height, int loops)
{
return do_long_lines (cr, width, height, loops, 0);
}
static cairo_time_t
long_lines_uncropped_once (cairo_t *cr, int width, int height, int loops)
{
return do_long_lines (cr, width, height, loops, LONG_LINES_ONCE);
}
static cairo_time_t
long_lines_cropped (cairo_t *cr, int width, int height, int loops)
{
return do_long_lines (cr, width, height, loops, LONG_LINES_CROPPED);
}
static cairo_time_t
long_lines_cropped_once (cairo_t *cr, int width, int height, int loops)
{
return do_long_lines (cr, width, height, loops, LONG_LINES_CROPPED | LONG_LINES_ONCE);
}
cairo_bool_t
long_lines_enabled (cairo_perf_t *perf)
{
return cairo_perf_can_run (perf, "long-lines", NULL);
}
void
long_lines (cairo_perf_t *perf, cairo_t *cr, int width, int height)
{
cairo_perf_run (perf, "long-lines-uncropped", long_lines_uncropped, NULL);
cairo_perf_run (perf, "long-lines-uncropped-once", long_lines_uncropped_once, NULL);
cairo_perf_run (perf, "long-lines-cropped", long_lines_cropped, NULL);
cairo_perf_run (perf, "long-lines-cropped-once", long_lines_cropped_once, NULL);
}