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-rw-r--r--libs/cairo-1.16.0/perf/micro/dragon.c277
1 files changed, 277 insertions, 0 deletions
diff --git a/libs/cairo-1.16.0/perf/micro/dragon.c b/libs/cairo-1.16.0/perf/micro/dragon.c
new file mode 100644
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--- /dev/null
+++ b/libs/cairo-1.16.0/perf/micro/dragon.c
@@ -0,0 +1,277 @@
+/*
+ * Copyright © 2007 Chris Wilson
+ *
+ * Permission to use, copy, modify, distribute, and sell this software
+ * and its documentation for any purpose is hereby granted without
+ * fee, provided that the above copyright notice appear in all copies
+ * and that both that copyright notice and this permission notice
+ * appear in supporting documentation, and that the name of
+ * Chris Wilson not be used in advertising or publicity pertaining to
+ * distribution of the software without specific, written prior
+ * permission. Chris Wilson makes no representations about the
+ * suitability of this software for any purpose. It is provided "as
+ * is" without express or implied warranty.
+ *
+ * CHRIS WILSON DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS
+ * SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
+ * FITNESS, IN NO EVENT SHALL CHRIS WILSON BE LIABLE FOR ANY SPECIAL,
+ * INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER
+ * RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR
+ * IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ *
+ * Author: Chris Wilson <chris@chris-wilson.co.uk>
+ *
+ * Inspiration (and path!) taken from
+ * http://labs.trolltech.com/blogs/2007/08/31/rasterizing-dragons/
+ */
+
+#include "cairo-perf.h"
+
+static inline int
+next_pot (int v)
+{
+ v--;
+ v |= v >> 1;
+ v |= v >> 2;
+ v |= v >> 4;
+ v |= v >> 8;
+ v |= v >> 16;
+ v++;
+ return v;
+}
+
+static cairo_bool_t
+direction (int i)
+{
+ int pivot, np2;
+
+ if (i < 2)
+ return TRUE;
+
+ np2 = next_pot (i + 1);
+ if (np2 == i + 1)
+ return TRUE;
+
+ pivot = np2 / 2 - 1;
+ return ! direction (2 * pivot - i);
+}
+
+static void
+path (cairo_t *cr, int step, int dir, int iterations)
+{
+ double dx, dy;
+ int i;
+
+ switch (dir) {
+ default:
+ case 0: dx = step; dy = 0; break;
+ case 1: dx = -step; dy = 0; break;
+ case 2: dx = 0; dy = step; break;
+ case 3: dx = 0; dy = -step; break;
+ }
+
+ for (i = 0; i < iterations; i++) {
+ cairo_rel_line_to (cr, dx, dy);
+
+ if (direction (i)) {
+ double t = dx;
+ dx = dy;
+ dy = -t;
+ } else {
+ double t = dx;
+ dx = -dy;
+ dy = t;
+ }
+ }
+}
+
+static cairo_time_t
+do_dragon (cairo_t *cr, int width, int height, int loops)
+{
+ cairo_pattern_t *pattern;
+ double cx, cy, r;
+
+ cx = cy = .5 * MAX (width, height);
+ r = .5 * MIN (width, height);
+
+ cairo_perf_timer_start ();
+
+ while (loops--) {
+ pattern = cairo_pattern_create_radial (cx, cy, 0., cx, cy, r);
+ cairo_pattern_add_color_stop_rgb (pattern, 0., .0, .0, .0);
+ cairo_pattern_add_color_stop_rgb (pattern, 0.25, .5, .4, .4);
+ cairo_pattern_add_color_stop_rgb (pattern, .5, .8, .8, .9);
+ cairo_pattern_add_color_stop_rgb (pattern, 1., .9, .9, 1.);
+ cairo_set_source (cr, pattern);
+ cairo_pattern_destroy (pattern);
+ cairo_paint (cr);
+
+ cairo_set_line_cap (cr, CAIRO_LINE_CAP_ROUND);
+ cairo_set_line_join (cr, CAIRO_LINE_JOIN_ROUND);
+ cairo_set_line_width (cr, 4.);
+
+ cairo_move_to (cr, cx, cy);
+ path (cr, 12, 0, 2048);
+ pattern = cairo_pattern_create_radial (cx, cy, 0., cx, cy, r);
+ cairo_pattern_add_color_stop_rgb (pattern, 0., 1., 1., 1.);
+ cairo_pattern_add_color_stop_rgb (pattern, 1., 0., 0., 0.);
+ cairo_set_source (cr, pattern);
+ cairo_pattern_destroy (pattern);
+ cairo_stroke(cr);
+
+ cairo_move_to (cr, cx, cy);
+ path (cr, 12, 1, 2048);
+ pattern = cairo_pattern_create_radial (cx, cy, 0., cx, cy, r);
+ cairo_pattern_add_color_stop_rgb (pattern, 1., 1., 1., 0.);
+ cairo_pattern_add_color_stop_rgb (pattern, 0., 1., 0., 0.);
+ cairo_set_source (cr, pattern);
+ cairo_pattern_destroy (pattern);
+ cairo_stroke(cr);
+
+ cairo_move_to (cr, cx, cy);
+ path (cr, 12, 2, 2048);
+ pattern = cairo_pattern_create_radial (cx, cy, 0., cx, cy, r);
+ cairo_pattern_add_color_stop_rgb (pattern, 1., 0., 1., 1.);
+ cairo_pattern_add_color_stop_rgb (pattern, 0., 0., 1., 0.);
+ cairo_set_source (cr, pattern);
+ cairo_pattern_destroy (pattern);
+ cairo_stroke(cr);
+
+ cairo_move_to (cr, cx, cy);
+ path (cr, 12, 3, 2048);
+ pattern = cairo_pattern_create_radial (cx, cy, 0., cx, cy, r);
+ cairo_pattern_add_color_stop_rgb (pattern, 1., 1., 0., 1.);
+ cairo_pattern_add_color_stop_rgb (pattern, 0., 0., 0., 1.);
+ cairo_set_source (cr, pattern);
+ cairo_pattern_destroy (pattern);
+ cairo_stroke(cr);
+ }
+
+ cairo_perf_timer_stop ();
+
+ return cairo_perf_timer_elapsed ();
+}
+
+static cairo_time_t
+do_dragon_solid (cairo_t *cr, int width, int height, int loops)
+{
+ double cx, cy;
+
+ cx = cy = .5 * MAX (width, height);
+
+ cairo_perf_timer_start ();
+
+ while (loops--) {
+ cairo_set_source_rgb (cr, 0, 0, 0);
+ cairo_paint (cr);
+
+ cairo_set_line_width (cr, 4.);
+
+ cairo_move_to (cr, cx, cy);
+ path (cr, 12, 0, 2048);
+ cairo_set_source_rgb (cr, 1, 0, 0);
+ cairo_stroke(cr);
+
+ cairo_move_to (cr, cx, cy);
+ path (cr, 12, 1, 2048);
+ cairo_set_source_rgb (cr, 0, 1, 0);
+ cairo_stroke(cr);
+
+ cairo_move_to (cr, cx, cy);
+ path (cr, 12, 2, 2048);
+ cairo_set_source_rgb (cr, 0, 0, 1);
+ cairo_stroke(cr);
+
+ cairo_move_to (cr, cx, cy);
+ path (cr, 12, 3, 2048);
+ cairo_set_source_rgb (cr, 1, 1, 1);
+ cairo_stroke(cr);
+ }
+
+ cairo_perf_timer_stop ();
+
+ return cairo_perf_timer_elapsed ();
+}
+
+static cairo_time_t
+do_dragon_solid_unaligned (cairo_t *cr, int width, int height, int loops)
+{
+ cairo_translate (cr, 0.01, 0.01);
+ return do_dragon_solid (cr, width, height, loops);
+}
+
+static cairo_time_t
+do_dragon_solid_aligned_clip (cairo_t *cr, int width, int height, int loops)
+{
+ cairo_reset_clip (cr);
+ cairo_rectangle (cr, 10, 10, width/2 + 10, height/2 + 10);
+ cairo_rectangle (cr, width/2-20, height/2-20, width/2 + 10, height/2 + 10);
+ cairo_clip (cr);
+
+ return do_dragon_solid (cr, width, height, loops);
+}
+
+static cairo_time_t
+do_dragon_unaligned_solid_aligned_clip (cairo_t *cr, int width, int height, int loops)
+{
+ cairo_translate (cr, 0.01, 0.01);
+ cairo_reset_clip (cr);
+ cairo_rectangle (cr, 10, 10, width/2 + 10, height/2 + 10);
+ cairo_rectangle (cr, width/2-20, height/2-20, width/2 + 10, height/2 + 10);
+ cairo_clip (cr);
+
+ return do_dragon_solid (cr, width, height, loops);
+}
+
+static cairo_time_t
+do_dragon_solid_unaligned_clip (cairo_t *cr, int width, int height, int loops)
+{
+ cairo_reset_clip (cr);
+ cairo_rectangle (cr, 10.5, 10.5, width/2 + 10, height/2 + 10);
+ cairo_rectangle (cr, width/2-20, height/2-20, width/2 + 9.5, height/2 + 9.5);
+ cairo_clip (cr);
+
+ return do_dragon_solid (cr, width, height, loops);
+}
+
+static cairo_time_t
+do_dragon_unaligned_solid_unaligned_clip (cairo_t *cr, int width, int height, int loops)
+{
+ cairo_translate (cr, 0.01, 0.01);
+ cairo_reset_clip (cr);
+ cairo_rectangle (cr, 10.5, 10.5, width/2 + 10, height/2 + 10);
+ cairo_rectangle (cr, width/2-20, height/2-20, width/2 + 9.5, height/2 + 9.5);
+ cairo_clip (cr);
+
+ return do_dragon_solid (cr, width, height, loops);
+}
+
+static cairo_time_t
+do_dragon_solid_circle_clip (cairo_t *cr, int width, int height, int loops)
+{
+ cairo_reset_clip (cr);
+ cairo_arc (cr, width/2., height/2., MIN (width, height)/2. - 10, 0, 2 * M_PI);
+ cairo_clip (cr);
+
+ return do_dragon_solid (cr, width, height, loops);
+}
+
+cairo_bool_t
+dragon_enabled (cairo_perf_t *perf)
+{
+ return cairo_perf_can_run (perf, "dragon", NULL);
+}
+
+void
+dragon (cairo_perf_t *perf, cairo_t *cr, int width, int height)
+{
+ cairo_perf_run (perf, "dragon-solid", do_dragon_solid, NULL);
+ cairo_perf_run (perf, "dragon-unaligned-solid", do_dragon_solid_unaligned, NULL);
+ cairo_perf_run (perf, "dragon-solid-aligned-clip", do_dragon_solid_aligned_clip, NULL);
+ cairo_perf_run (perf, "dragon-unaligned-solid-aligned-clip", do_dragon_unaligned_solid_aligned_clip, NULL);
+ cairo_perf_run (perf, "dragon-solid-unaligned-clip", do_dragon_solid_unaligned_clip, NULL);
+ cairo_perf_run (perf, "dragon-unaligned-solid-unaligned-clip", do_dragon_unaligned_solid_unaligned_clip, NULL);
+ cairo_perf_run (perf, "dragon-solid-circle-clip", do_dragon_solid_circle_clip, NULL);
+ cairo_perf_run (perf, "dragon", do_dragon, NULL);
+}
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