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perf: Add subimage_copy test to demonstrate performance bug found by monty

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This commit is contained in:
Carl Worth 2006-10-05 12:13:48 -07:00
parent 9285a1f7fe
commit 5412343a77
4 changed files with 74 additions and 0 deletions
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1
perf/Makefile.am
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@ -21,6 +21,7 @@ cairo_perf_SOURCES = \
fill.c \
paint.c \
stroke.c \
subimage_copy.c \
tessellate.c \
text.c

1
perf/cairo-perf.c
View file

@ -238,5 +238,6 @@ cairo_perf_case_t perf_cases[] = {
{ stroke, 64, 256},
{ text, 64, 256},
{ tessellate, 100, 100},
{ subimage_copy, 16, 512},
{ NULL }
};

1
perf/cairo-perf.h
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@ -85,6 +85,7 @@ cairo_perf_cover_sources_and_operators (cairo_perf_t *perf,
CAIRO_PERF_DECL (fill);
CAIRO_PERF_DECL (paint);
CAIRO_PERF_DECL (stroke);
CAIRO_PERF_DECL (subimage_copy);
CAIRO_PERF_DECL (tessellate);
CAIRO_PERF_DECL (text);

71
perf/subimage_copy.c Normal file
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@ -0,0 +1,71 @@
/*
* Copyright © 2006 Red Hat, Inc.
*
* Permission to use, copy, modify, distribute, and sell this software
* and its documentation for any purpose is hereby granted without
* fee, provided that the above copyright notice appear in all copies
* and that both that copyright notice and this permission notice
* appear in supporting documentation, and that the name of
* Red Hat, Inc. not be used in advertising or publicity pertaining to
* distribution of the software without specific, written prior
* permission. Red Hat, Inc. makes no representations about the
* suitability of this software for any purpose. It is provided "as
* is" without express or implied warranty.
*
* RED HAT, INC. DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS
* SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
* FITNESS, IN NO EVENT SHALL RED HAT, INC. BE LIABLE FOR ANY SPECIAL,
* INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER
* RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
* OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR
* IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*
* Author: Carl D. Worth <cworth@cworth.org>
*/
#include "cairo-perf.h"
/* This case exposes a performance bug found by Christopher "Monty"
* Montgomery in that copying a tiny portion of an image surface to an
* X surface causes the entire image surface to be copied to an
* intermediate surface.
*
* If the performance bug is fixed, then the time this test takes
* should be independent of the source and destination surface sizes.
*/
static cairo_perf_ticks_t
do_subimage_copy (cairo_t *cr, int width, int height)
{
cairo_rectangle (cr, 2, 2, 4, 4);
cairo_set_operator (cr, CAIRO_OPERATOR_SOURCE);
cairo_perf_timer_start ();
cairo_fill (cr);
cairo_perf_timer_stop ();
return cairo_perf_timer_elapsed ();
}
void
subimage_copy (cairo_perf_t *perf, cairo_t *cr, int width, int height)
{
cairo_surface_t *image;
cairo_t *cr2;
cairo_set_source_rgb (cr, 0, 0, 1); /* blue */
cairo_paint (cr);
image = cairo_image_surface_create (CAIRO_FORMAT_ARGB32, width, height);
cr2 = cairo_create (image);
cairo_set_source_rgb (cr2, 1, 0, 0); /* red */
cairo_paint (cr2);
cairo_destroy (cr2);
cairo_set_source_surface (cr, image, 0, 0);
cairo_surface_destroy (image);
cairo_perf_run (perf, "subimage_copy", do_subimage_copy);
}