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[test] Add a test for a reported regression by Michael Natterer.

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mitch reported on irc that expose events in the gimp were suffering from
artifacts which he tracked down to a bug with clipping and source
surfaces. This is the cairo test case for that regression.
This commit is contained in:
Chris Wilson 2008-10-07 20:19:10 +01:00
parent 28a3b546b9
commit 308485a3fc
4 changed files with 73 additions and 0 deletions
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1
test/.gitignore vendored
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@ -31,6 +31,7 @@ clip-push-group
clip-twice
clip-zero
clipped-group
clipped-surface
close-path
composite-integer-translate-over
composite-integer-translate-over-repeat

2
test/Makefile.am
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@ -25,6 +25,7 @@ clip-push-group$(EXEEXT) \
clip-twice$(EXEEXT) \
clip-zero$(EXEEXT) \
clipped-group$(EXEEXT) \
clipped-surface$(EXEEXT) \
close-path$(EXEEXT) \
composite-integer-translate-source$(EXEEXT) \
composite-integer-translate-over$(EXEEXT) \
@ -346,6 +347,7 @@ REFERENCE_IMAGES = \
clipped-group-ref.png \
clipped-group-ps2-ref.png \
clipped-group-ps3-ref.png \
clipped-surface-ref.png \
close-path-ref.png \
close-path-ps2-ref.png \
close-path-ps3-ref.png \

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70
test/clipped-surface.c Normal file
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@ -0,0 +1,70 @@
/*
* Copyright 2008 Chris Wilson
*
* 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
* Chris Wilson not be used in advertising or publicity pertaining to
* distribution of the software without specific, written prior
* permission. Chris Wilson makes no representations about the
* suitability of this software for any purpose. It is provided "as
* is" without express or implied warranty.
*
* CHRIS WILSON DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS
* SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
* FITNESS, IN NO EVENT SHALL CHRIS WILSON 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: Chris Wilson <chris@chris-wilson.co.uk>
*/
/*
* Michael Natterer (mitch) reported a bad regression with post-1.8 trunk
* with artifacts drawn whilst repainting exposed areas.
*/
#include "cairo-test.h"
static const char png_filename[] = "romedalen.png";
static cairo_test_draw_function_t draw;
static const cairo_test_t test = {
"clipped-surface",
"Tests application of a clip to a source surface",
40, 40,
draw
};
static cairo_test_status_t
draw (cairo_t *cr, int width, int height)
{
const cairo_test_context_t *ctx = cairo_test_get_context (cr);
cairo_surface_t *image;
image = cairo_test_create_surface_from_png (ctx, png_filename);
cairo_set_source_rgb (cr, 1, 0, 0);
cairo_paint (cr);
cairo_rectangle (cr, 20, 20, 10, 10);
cairo_clip (cr);
cairo_set_source_surface (cr, image, 10, 10);
cairo_surface_destroy (image);
cairo_rectangle (cr, 10, 10, 20, 20);
cairo_fill (cr);
return CAIRO_TEST_SUCCESS;
}
int
main (void)
{
return cairo_test (&test);
}