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[perf] Add composite performance test.

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Add a new test case to Cairo for checking the performance of Cairo's
equivalent to GDK's gdk_pixbuf_composite_color() operation. That is an
operation that happens to be extremely useful when viewing or editing
transparent images so I think it is important that it is as fast as
possible.
This commit is contained in:
Björn Lindqvist 2008-10-08 20:08:25 +01:00 • committed by Chris Wilson
parent 96b083d3f0
commit f644d78dc1
5 changed files with 112 additions and 0 deletions
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1
AUTHORS
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@ -33,6 +33,7 @@ Richard Henderson <rth@twiddle.net> "slim" macros for better shared libraries
James Henstridge <james@daa.com.au> Build fixes related to freetype
Graydon Hoare <graydon@redhat.com> Support for non-render X server, first real text support
Thomas Hunger <info@teh-web.de> Initial version of cairo_in_stroke/fill
Björn Lindqvist <bjourne@gmail.com> Performance test cases
Kristian Høgsberg <krh@redhat.com> PDF backend, PS backend with meta-surfaces
Amaury Jacquot <sxpert@esitcom.org> Documentation review, appplication testing
Adrian Johnson <ajohnson@redneon.com> PDF backend improvement

1
perf/Makefile.am
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@ -17,6 +17,7 @@ cairo_perf_SOURCES = \
cairo-stats.c \
cairo-stats.h \
box-outline.c \
composite-checker.c \
fill.c \
long-lines.c \
mosaic.c \

1
perf/cairo-perf.c
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@ -456,5 +456,6 @@ const cairo_perf_case_t perf_cases[] = {
{ rectangles, 512, 512},
{ rounded_rectangles, 512, 512},
{ long_dashed_lines, 512, 512},
{ composite_checker, 16, 512},
{ NULL }
};

1
perf/cairo-perf.h
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@ -112,5 +112,6 @@ CAIRO_PERF_DECL (unaligned_clip);
CAIRO_PERF_DECL (rectangles);
CAIRO_PERF_DECL (rounded_rectangles);
CAIRO_PERF_DECL (long_dashed_lines);
CAIRO_PERF_DECL (composite_checker);
#endif

108
perf/composite-checker.c Normal file
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@ -0,0 +1,108 @@
/*
* Copyright © 2007 Björn Lindqvist
*
* 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: Björn Lindqvist <bjourne@gmail.com>
*/
#include "cairo-perf.h"
/* This test case measures how much time cairo takes to render the
* equivalent of the following gdk-pixbuf operation:
*
* gdk_pixbuf_composite_color(dest,
* 0, 0, DST_SIZE, DST_SIZE,
* 0, 0,
* SCALE, SCALE,
* gdk.INTERP_NEAREST,
* 255,
* 0, 0,
* 8, 0x33333333, 0x88888888);
*
* Cairo is (at the time of writing) about 2-3 times as slow as
* gdk-pixbuf.
*/
#define PAT_SIZE 16
#define SRC_SIZE 64
static cairo_pattern_t *checkerboard = NULL;
static cairo_pattern_t *src_pattern = NULL;
static cairo_perf_ticks_t
do_composite_checker (cairo_t *cr,
int width,
int height)
{
/* Compute zoom so that the src_pattern covers the whole output image. */
double xscale = width / (double) SRC_SIZE;
double yscale = height / (double) SRC_SIZE;
cairo_perf_timer_start ();
cairo_identity_matrix (cr);
/* Fill the surface with our background. */
cairo_set_source (cr, checkerboard);
cairo_paint (cr);
/* Draw the scaled image on top. */
cairo_scale (cr, xscale, yscale);
cairo_set_source (cr, src_pattern);
cairo_paint (cr);
cairo_perf_timer_stop ();
return cairo_perf_timer_elapsed ();
}
void
composite_checker (cairo_perf_t *perf,
cairo_t *cr,
int width,
int height)
{
cairo_surface_t *image;
/* Create the checker pattern. We don't actually need to draw
* anything on it since that wouldn't affect performance.
*/
image = cairo_image_surface_create (CAIRO_FORMAT_ARGB32,
PAT_SIZE,
PAT_SIZE);
checkerboard = cairo_pattern_create_for_surface (image);
cairo_pattern_set_filter (checkerboard, CAIRO_FILTER_NEAREST);
cairo_pattern_set_extend (checkerboard, CAIRO_EXTEND_REPEAT);
/* Create the image source pattern. Again we use the NEAREST
* filtering which should be fastest.
*/
image = cairo_image_surface_create (CAIRO_FORMAT_ARGB32,
SRC_SIZE,
SRC_SIZE);
src_pattern = cairo_pattern_create_for_surface (image);
cairo_pattern_set_filter (src_pattern, CAIRO_FILTER_NEAREST);
cairo_perf_run (perf, "composite-checker", do_composite_checker);
/* Frees the associated surfaces too. */
cairo_pattern_destroy (checkerboard);
cairo_pattern_destroy (src_pattern);
}