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72481acf0d
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.
249 lines
6.8 KiB
C
249 lines
6.8 KiB
C
/*
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* Copyright © 2007 Chris Wilson
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*
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* Permission to use, copy, modify, distribute, and sell this software
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* and its documentation for any purpose is hereby granted without
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* fee, provided that the above copyright notice appear in all copies
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* and that both that copyright notice and this permission notice
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* appear in supporting documentation, and that the name of
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* Chris Wilson not be used in advertising or publicity pertaining to
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* distribution of the software without specific, written prior
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* permission. Chris Wilson makes no representations about the
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* suitability of this software for any purpose. It is provided "as
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* is" without express or implied warranty.
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*
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* CHRIS WILSON DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS
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* SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
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* FITNESS, IN NO EVENT SHALL CHRIS WILSON BE LIABLE FOR ANY SPECIAL,
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* INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER
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* RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
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* OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR
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* IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*
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* Author: Chris Wilson <chris@chris-wilson.co.uk>
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*
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* Inspiration (and path!) taken from
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* http://labs.trolltech.com/blogs/2007/08/31/rasterizing-dragons/
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*/
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#include "cairo-perf.h"
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#ifndef MIN
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#define MIN(a,b) (((a) < (b)) ? (a) : (b))
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#endif
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#ifndef MAX
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#define MAX(a,b) (((a) > (b)) ? (a) : (b))
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#endif
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static inline int
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next_pot (int v)
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{
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v--;
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v |= v >> 1;
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v |= v >> 2;
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v |= v >> 4;
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v |= v >> 8;
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v |= v >> 16;
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v++;
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return v;
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}
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static cairo_bool_t
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direction (int i)
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{
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int pivot, np2;
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if (i < 2)
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return TRUE;
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np2 = next_pot (i + 1);
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if (np2 == i + 1)
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return TRUE;
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pivot = np2 / 2 - 1;
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return ! direction (2 * pivot - i);
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}
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static void
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path (cairo_t *cr, int step, int dir, int iterations)
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{
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double dx, dy;
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int i;
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switch (dir) {
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default:
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case 0: dx = step; dy = 0; break;
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case 1: dx = -step; dy = 0; break;
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case 2: dx = 0; dy = step; break;
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case 3: dx = 0; dy = -step; break;
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}
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for (i = 0; i < iterations; i++) {
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cairo_rel_line_to (cr, dx, dy);
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if (direction (i)) {
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double t = dx;
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dx = dy;
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dy = -t;
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} else {
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double t = dx;
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dx = -dy;
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dy = t;
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}
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}
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}
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static cairo_perf_ticks_t
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do_dragon (cairo_t *cr, int width, int height, int loops)
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{
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cairo_pattern_t *pattern;
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double cx, cy, r;
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cx = cy = .5 * MAX (width, height);
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r = .5 * MIN (width, height);
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cairo_perf_timer_start ();
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while (loops--) {
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pattern = cairo_pattern_create_radial (cx, cy, 0., cx, cy, r);
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cairo_pattern_add_color_stop_rgb (pattern, 0., .0, .0, .0);
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cairo_pattern_add_color_stop_rgb (pattern, 0.25, .5, .4, .4);
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cairo_pattern_add_color_stop_rgb (pattern, .5, .8, .8, .9);
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cairo_pattern_add_color_stop_rgb (pattern, 1., .9, .9, 1.);
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cairo_set_source (cr, pattern);
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cairo_pattern_destroy (pattern);
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cairo_paint (cr);
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cairo_set_line_cap (cr, CAIRO_LINE_CAP_ROUND);
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cairo_set_line_join (cr, CAIRO_LINE_JOIN_ROUND);
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cairo_set_line_width (cr, 4.);
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cairo_move_to (cr, cx, cy);
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path (cr, 12, 0, 2048);
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pattern = cairo_pattern_create_radial (cx, cy, 0., cx, cy, r);
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cairo_pattern_add_color_stop_rgb (pattern, 0., 1., 1., 1.);
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cairo_pattern_add_color_stop_rgb (pattern, 1., 0., 0., 0.);
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cairo_set_source (cr, pattern);
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cairo_pattern_destroy (pattern);
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cairo_stroke(cr);
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cairo_move_to (cr, cx, cy);
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path (cr, 12, 1, 2048);
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pattern = cairo_pattern_create_radial (cx, cy, 0., cx, cy, r);
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cairo_pattern_add_color_stop_rgb (pattern, 1., 1., 1., 0.);
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cairo_pattern_add_color_stop_rgb (pattern, 0., 1., 0., 0.);
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cairo_set_source (cr, pattern);
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cairo_pattern_destroy (pattern);
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cairo_stroke(cr);
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cairo_move_to (cr, cx, cy);
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path (cr, 12, 2, 2048);
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pattern = cairo_pattern_create_radial (cx, cy, 0., cx, cy, r);
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cairo_pattern_add_color_stop_rgb (pattern, 1., 0., 1., 1.);
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cairo_pattern_add_color_stop_rgb (pattern, 0., 0., 1., 0.);
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cairo_set_source (cr, pattern);
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cairo_pattern_destroy (pattern);
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cairo_stroke(cr);
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cairo_move_to (cr, cx, cy);
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path (cr, 12, 3, 2048);
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pattern = cairo_pattern_create_radial (cx, cy, 0., cx, cy, r);
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cairo_pattern_add_color_stop_rgb (pattern, 1., 1., 0., 1.);
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cairo_pattern_add_color_stop_rgb (pattern, 0., 0., 0., 1.);
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cairo_set_source (cr, pattern);
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cairo_pattern_destroy (pattern);
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cairo_stroke(cr);
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}
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cairo_perf_timer_stop ();
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return cairo_perf_timer_elapsed ();
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}
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static cairo_perf_ticks_t
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do_dragon_solid (cairo_t *cr, int width, int height, int loops)
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{
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double cx, cy, r;
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cx = cy = .5 * MAX (width, height);
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r = .5 * MIN (width, height);
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cairo_perf_timer_start ();
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while (loops--) {
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cairo_set_source_rgb (cr, 0, 0, 0);
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cairo_paint (cr);
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cairo_set_line_width (cr, 4.);
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cairo_move_to (cr, cx, cy);
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path (cr, 12, 0, 2048);
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cairo_set_source_rgb (cr, 1, 0, 0);
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cairo_stroke(cr);
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cairo_move_to (cr, cx, cy);
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path (cr, 12, 1, 2048);
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cairo_set_source_rgb (cr, 0, 1, 0);
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cairo_stroke(cr);
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cairo_move_to (cr, cx, cy);
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path (cr, 12, 2, 2048);
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cairo_set_source_rgb (cr, 0, 0, 1);
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cairo_stroke(cr);
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cairo_move_to (cr, cx, cy);
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path (cr, 12, 3, 2048);
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cairo_set_source_rgb (cr, 1, 1, 1);
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cairo_stroke(cr);
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}
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cairo_perf_timer_stop ();
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return cairo_perf_timer_elapsed ();
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}
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static cairo_perf_ticks_t
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do_dragon_solid_aligned_clip (cairo_t *cr, int width, int height, int loops)
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{
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cairo_reset_clip (cr);
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cairo_rectangle (cr, 10, 10, width/2 + 10, height/2 + 10);
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cairo_rectangle (cr, width/2-20, height/2-20, width/2 + 10, height/2 + 10);
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cairo_clip (cr);
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return do_dragon_solid (cr, width, height, loops);
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}
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static cairo_perf_ticks_t
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do_dragon_solid_unaligned_clip (cairo_t *cr, int width, int height, int loops)
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{
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cairo_reset_clip (cr);
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cairo_rectangle (cr, 10.5, 10.5, width/2 + 10, height/2 + 10);
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cairo_rectangle (cr, width/2-20, height/2-20, width/2 + 9.5, height/2 + 9.5);
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cairo_clip (cr);
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return do_dragon_solid (cr, width, height, loops);
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}
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static cairo_perf_ticks_t
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do_dragon_solid_circle_clip (cairo_t *cr, int width, int height, int loops)
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{
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cairo_reset_clip (cr);
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cairo_arc (cr, width/2., height/2., MIN (width, height)/2. - 10, 0, 2 * M_PI);
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cairo_clip (cr);
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return do_dragon_solid (cr, width, height, loops);
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}
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void
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dragon (cairo_perf_t *perf, cairo_t *cr, int width, int height)
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{
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if (! cairo_perf_can_run (perf, "dragon", NULL))
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return;
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cairo_perf_run (perf, "dragon-solid", do_dragon_solid, NULL);
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cairo_perf_run (perf, "dragon-solid-aligned-clip", do_dragon_solid_aligned_clip, NULL);
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cairo_perf_run (perf, "dragon-solid-unaligned-clip", do_dragon_solid_unaligned_clip, NULL);
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cairo_perf_run (perf, "dragon-solid-circle-clip", do_dragon_solid_circle_clip, NULL);
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cairo_perf_run (perf, "dragon", do_dragon, NULL);
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}
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