diff options
Diffstat (limited to 'libs/cairo-1.16.0/perf/micro/box-outline.c')
| -rw-r--r-- | libs/cairo-1.16.0/perf/micro/box-outline.c | 215 |
1 files changed, 215 insertions, 0 deletions
diff --git a/libs/cairo-1.16.0/perf/micro/box-outline.c b/libs/cairo-1.16.0/perf/micro/box-outline.c new file mode 100644 index 0000000..1e654eb --- /dev/null +++ b/libs/cairo-1.16.0/perf/micro/box-outline.c @@ -0,0 +1,215 @@ +/* + * 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 that + * exists in cairo in which using cairo_stroke is much slower than + * cairo_fill to draw an identical figure, (and in particular a figure + * that is much more natural to draw with cairo_stroke). The figure is + * a 100x100 square outline 1-pixel wide, nicely pixel aligned. + * + * The performance bug should affect any path whose resulting contour + * consists only of pixel-aligned horizontal and vertical elements. + * + * Initial testing on on machine shows stroke as 5x slower than fill + * for the xlib backend and 16x slower for the image backend. + */ + +static cairo_time_t +box_outline_stroke (cairo_t *cr, int width, int height, int loops) +{ + cairo_set_source_rgb (cr, 0, 0, 1); /* blue */ + cairo_paint (cr); + + cairo_rectangle (cr, + 1.5, 1.5, + width - 3, height - 3); + cairo_set_line_width (cr, 1.0); + cairo_set_source_rgb (cr, 1, 0, 0); /* red */ + + cairo_perf_timer_start (); + + while (loops--) + cairo_stroke_preserve (cr); + + cairo_perf_timer_stop (); + + cairo_new_path (cr); + + return cairo_perf_timer_elapsed (); +} + +static cairo_time_t +box_outline_alpha_stroke (cairo_t *cr, int width, int height, int loops) +{ + cairo_set_source_rgb (cr, 0, 0, 1); /* blue */ + cairo_paint (cr); + + cairo_rectangle (cr, + 1.5, 1.5, + width - 3, height - 3); + cairo_set_line_width (cr, 1.0); + cairo_set_source_rgba (cr, 1, 0, 0, .5); /* red */ + + cairo_perf_timer_start (); + + while (loops--) + cairo_stroke_preserve (cr); + + cairo_perf_timer_stop (); + + cairo_new_path (cr); + + return cairo_perf_timer_elapsed (); +} + +static cairo_time_t +box_outline_aa_stroke (cairo_t *cr, int width, int height, int loops) +{ + cairo_set_source_rgb (cr, 0, 0, 1); /* blue */ + cairo_paint (cr); + + cairo_translate (cr, .5, .5); + cairo_rectangle (cr, + 1.5, 1.5, + width - 3, height - 3); + cairo_set_line_width (cr, 1.0); + cairo_set_source_rgb (cr, 1, 0, 0); /* red */ + + cairo_perf_timer_start (); + + while (loops--) + cairo_stroke_preserve (cr); + + cairo_perf_timer_stop (); + + cairo_new_path (cr); + + return cairo_perf_timer_elapsed (); +} + +static cairo_time_t +box_outline_fill (cairo_t *cr, int width, int height, int loops) +{ + cairo_set_source_rgb (cr, 0, 0, 1); /* blue */ + cairo_paint (cr); + + cairo_rectangle (cr, + 1.0, 1.0, + width - 2, height - 2); + cairo_rectangle (cr, + 2.0, 2.0, + width - 4, height - 4); + cairo_set_fill_rule (cr, CAIRO_FILL_RULE_EVEN_ODD); + cairo_set_source_rgb (cr, 0, 1, 0); /* green */ + + 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_time_t +box_outline_alpha_fill (cairo_t *cr, int width, int height, int loops) +{ + cairo_set_source_rgb (cr, 0, 0, 1); /* blue */ + cairo_paint (cr); + + cairo_rectangle (cr, + 1.0, 1.0, + width - 2, height - 2); + cairo_rectangle (cr, + 2.0, 2.0, + width - 4, height - 4); + cairo_set_fill_rule (cr, CAIRO_FILL_RULE_EVEN_ODD); + cairo_set_source_rgba (cr, 0, 1, 0, .5); /* green */ + + 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_time_t +box_outline_aa_fill (cairo_t *cr, int width, int height, int loops) +{ + cairo_set_source_rgb (cr, 0, 0, 1); /* blue */ + cairo_paint (cr); + + cairo_translate (cr, .5, .5); + cairo_rectangle (cr, + 1.0, 1.0, + width - 2, height - 2); + cairo_rectangle (cr, + 2.0, 2.0, + width - 4, height - 4); + cairo_set_fill_rule (cr, CAIRO_FILL_RULE_EVEN_ODD); + cairo_set_source_rgb (cr, 0, 1, 0); /* green */ + + cairo_perf_timer_start (); + + while (loops--) + cairo_fill_preserve (cr); + + cairo_perf_timer_stop (); + + cairo_new_path (cr); + + return cairo_perf_timer_elapsed (); +} + +cairo_bool_t +box_outline_enabled (cairo_perf_t *perf) +{ + return cairo_perf_can_run (perf, "box-outline", NULL); +} + +void +box_outline (cairo_perf_t *perf, cairo_t *cr, int width, int height) +{ + cairo_perf_run (perf, "box-outline-stroke", box_outline_stroke, NULL); + cairo_perf_run (perf, "box-outline-fill", box_outline_fill, NULL); + + cairo_perf_run (perf, "box-outline-alpha-stroke", box_outline_alpha_stroke, NULL); + cairo_perf_run (perf, "box-outline-alpha-fill", box_outline_alpha_fill, NULL); + + cairo_perf_run (perf, "box-outline-aa-stroke", box_outline_aa_stroke, NULL); + cairo_perf_run (perf, "box-outline-aa-fill", box_outline_aa_fill, NULL); +} |