From d953161f881d1e5646574362d296a80afc0ff6e2 Mon Sep 17 00:00:00 2001 From: Chris Wilson Date: Sun, 7 Aug 2011 12:12:10 +0100 Subject: perf: Add many-strokes An intersection variant to exercise the stroker with many, many lines. A silly benchmark, but a popular one in the wild. Signed-off-by: Chris Wilson --- perf/cairo-perf-micro.c | 1 + perf/cairo-perf.h | 1 + perf/micro/Makefile.sources | 1 + perf/micro/many-strokes.c | 75 +++++++++++++++++++++++++++++++++++++++++++++ 4 files changed, 78 insertions(+) create mode 100644 perf/micro/many-strokes.c (limited to 'perf') diff --git a/perf/cairo-perf-micro.c b/perf/cairo-perf-micro.c index ca447def..b62a2ce3 100644 --- a/perf/cairo-perf-micro.c +++ b/perf/cairo-perf-micro.c @@ -564,6 +564,7 @@ const cairo_perf_case_t perf_cases[] = { { dragon, 1024, 1024 }, { pythagoras_tree, 768, 768 }, { intersections, 512, 512 }, + { many_strokes, 64, 512 }, { spiral, 512, 512 }, { wave, 500, 500 }, { NULL } diff --git a/perf/cairo-perf.h b/perf/cairo-perf.h index 32edc744..a1ce17e3 100644 --- a/perf/cairo-perf.h +++ b/perf/cairo-perf.h @@ -211,5 +211,6 @@ CAIRO_PERF_DECL (pythagoras_tree); CAIRO_PERF_DECL (intersections); CAIRO_PERF_DECL (spiral); CAIRO_PERF_DECL (wave); +CAIRO_PERF_DECL (many_strokes); #endif diff --git a/perf/micro/Makefile.sources b/perf/micro/Makefile.sources index 90f4bb6f..ee8cc57d 100644 --- a/perf/micro/Makefile.sources +++ b/perf/micro/Makefile.sources @@ -28,6 +28,7 @@ libcairo_perf_micro_sources = \ dragon.c \ pythagoras-tree.c \ intersections.c \ + many-strokes.c \ spiral.c \ $(NULL) diff --git a/perf/micro/many-strokes.c b/perf/micro/many-strokes.c new file mode 100644 index 00000000..b6211f23 --- /dev/null +++ b/perf/micro/many-strokes.c @@ -0,0 +1,75 @@ +/* + * 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 + */ + +#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_strokes (cairo_t *cr, int width, int height, int loops) +{ + int count; + + /* lots and lots of overlapping strokes */ + state = 0xc0ffee; + for (count = 0; count < 1000; count++) { + cairo_line_to (cr, + uniform_random (0, width), + uniform_random (0, height)); + } + + cairo_set_line_width (cr, 2.); + + cairo_perf_timer_start (); + + while (loops--) + cairo_stroke_preserve (cr); + + cairo_perf_timer_stop (); + + cairo_new_path (cr); + + return cairo_perf_timer_elapsed (); +} + +void +many_strokes (cairo_perf_t *perf, cairo_t *cr, int width, int height) +{ + if (! cairo_perf_can_run (perf, "many-strokes", NULL)) + return; + + cairo_perf_run (perf, "many-strokes", do_many_strokes, NULL); +} -- cgit v1.2.3