diff options
Diffstat (limited to 'perf/micro/many-fills.c')
| -rw-r--r-- | perf/micro/many-fills.c | 184 |
1 files changed, 184 insertions, 0 deletions
diff --git a/perf/micro/many-fills.c b/perf/micro/many-fills.c new file mode 100644 index 00000000..8c012aab --- /dev/null +++ b/perf/micro/many-fills.c @@ -0,0 +1,184 @@ +/* + * 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); +} |