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perf/micro: Add wave

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Benjamin just demonstrated this funky trick for generating pixel
outlines, and as no good deed should go unpunished, I've added his code
to the perf suite.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
This commit is contained in:
Chris Wilson 2011-06-01 19:16:02 +01:00
parent 1b33552a6d
commit 52f79bfcf3
4 changed files with 115 additions and 0 deletions
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1
perf/Makefile.am
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@ -48,6 +48,7 @@ cairo_perf_micro_SOURCES = \
micro/glyphs.c \
micro/twin.c \
micro/unaligned-clip.c \
micro/wave.c \
micro/world-map.c \
micro/world-map.h \
micro/zrusin.c \

1
perf/cairo-perf-micro.c
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@ -553,5 +553,6 @@ const cairo_perf_case_t perf_cases[] = {
{ pythagoras_tree, 768, 768 },
{ intersections, 512, 512 },
{ spiral, 512, 512 },
{ wave, 500, 500 },
{ NULL }
};

1
perf/cairo-perf.h
View file

@ -207,5 +207,6 @@ CAIRO_PERF_DECL (dragon);
CAIRO_PERF_DECL (pythagoras_tree);
CAIRO_PERF_DECL (intersections);
CAIRO_PERF_DECL (spiral);
CAIRO_PERF_DECL (wave);
#endif

112
perf/micro/wave.c Normal file
View file

@ -0,0 +1,112 @@
/*
* Copyright 2011 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: Benjamin Otte <otte@redhat.com>
*/
#include "cairo-perf.h"
static cairo_surface_t *
generate_random_waveform(cairo_t *target, int width, int height)
{
cairo_surface_t *surface;
cairo_t *cr;
int i, r;
srand (0xdeadbeef);
surface = cairo_surface_create_similar (cairo_get_target (target),
CAIRO_CONTENT_ALPHA,
width, height);
cr = cairo_create (surface);
r = height / 2;
for (i = 0; i < width; i++)
{
r += rand () % (height / 4) - (height / 8);
if (r < 0)
r = 0;
else if (r > height)
r = height;
cairo_rectangle (cr, i, (height - r) / 2, 1, r);
}
cairo_fill (cr);
cairo_destroy (cr);
return surface;
}
static cairo_perf_ticks_t
do_wave (cairo_t *cr, int width, int height, int loops)
{
cairo_surface_t *wave;
cairo_pattern_t *mask;
wave = generate_random_waveform (cr, width, height);
cairo_perf_timer_start ();
while (loops--) {
/* paint outline (and contents) */
cairo_set_source_rgb (cr, 1, 0, 0);
cairo_mask_surface (cr, wave, 0, 0);
/* overdraw inline */
/* first, create a mask */
cairo_push_group_with_content (cr, CAIRO_CONTENT_ALPHA);
cairo_set_source_surface (cr, wave, 0, 0);
cairo_paint (cr);
cairo_set_operator (cr, CAIRO_OPERATOR_IN);
cairo_set_source_surface (cr, wave, 1, 0);
cairo_paint (cr);
cairo_set_source_surface (cr, wave, -1, 0);
cairo_paint (cr);
cairo_set_source_surface (cr, wave, 0, 1);
cairo_paint (cr);
cairo_set_source_surface (cr, wave, 0, -1);
cairo_paint (cr);
mask = cairo_pop_group (cr);
/* second, paint the mask */
cairo_set_source_rgb (cr, 0, 1, 0);
cairo_mask (cr, mask);
cairo_pattern_destroy (mask);
}
cairo_perf_timer_stop ();
cairo_surface_destroy (wave);
return cairo_perf_timer_elapsed ();
}
void
wave (cairo_perf_t *perf, cairo_t *cr, int width, int height)
{
if (! cairo_perf_can_run (perf, "wave", NULL))
return;
cairo_perf_run (perf, "wave", do_wave, NULL);
}