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-rw-r--r--test/scale-offset-similar.c143
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diff --git a/test/scale-offset-similar.c b/test/scale-offset-similar.c
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--- a/test/scale-offset-similar.c
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-/*
- * 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>
- */
-
-/*
- * Test case derived from the bug report by Michel Iwaniec:
- * http://lists.cairographics.org/archives/cairo/2008-November/015660.html
- */
-
-#include "cairo-test.h"
-
-static cairo_surface_t *
-create_source (cairo_surface_t *target, int width, int height)
-{
- cairo_surface_t *similar;
- cairo_t *cr;
-
- similar = cairo_surface_create_similar (target,
- CAIRO_CONTENT_COLOR,
- width, height);
- cr = cairo_create (similar);
- cairo_surface_destroy (similar);
-
- cairo_set_source_rgb (cr, 1, 1, 1);
- cairo_rectangle (cr,
- width - 4, height - 4,
- 2, 2);
- cairo_fill (cr);
- cairo_set_source_rgb (cr, 1, 0, 0);
- cairo_rectangle (cr,
- width - 2, height - 4,
- 2, 2);
- cairo_fill (cr);
- cairo_set_source_rgb (cr, 0, 1, 0);
- cairo_rectangle (cr,
- width - 4, height - 2,
- 2, 2);
- cairo_fill (cr);
- cairo_set_source_rgb (cr, 0, 0, 1);
- cairo_rectangle (cr,
- width - 2, height - 2,
- 2, 2);
- cairo_fill (cr);
-
- similar = cairo_surface_reference (cairo_get_target (cr));
- cairo_destroy (cr);
-
- return similar;
-}
-
-static void
-draw_grid (cairo_t *cr, cairo_pattern_t *pattern, int dst_x, int dst_y)
-{
- cairo_matrix_t m;
-
- cairo_save (cr);
- cairo_translate (cr, dst_x, dst_y);
- cairo_scale (cr, 16, 16);
- cairo_rotate (cr, 1);
-
- cairo_matrix_init_translate (&m, 2560-4, 1280-4);
- cairo_pattern_set_matrix (pattern, &m);
- cairo_set_source (cr, pattern);
- cairo_rectangle (cr, 0, 0, 4, 4);
- cairo_fill (cr);
-
- cairo_set_source_rgb (cr, .7, .7, .7);
- cairo_set_line_width (cr, 1./16);
- cairo_move_to (cr, 0, 0);
- cairo_line_to (cr, 4, 0);
- cairo_move_to (cr, 0, 2);
- cairo_line_to (cr, 4, 2);
- cairo_move_to (cr, 0, 4);
- cairo_line_to (cr, 4, 4);
- cairo_move_to (cr, 0, 0);
- cairo_line_to (cr, 0, 4);
- cairo_move_to (cr, 2, 0);
- cairo_line_to (cr, 2, 4);
- cairo_move_to (cr, 4, 0);
- cairo_line_to (cr, 4, 4);
- cairo_stroke (cr);
-
- cairo_restore (cr);
-}
-
-static cairo_test_status_t
-draw (cairo_t *cr, int width, int height)
-{
- cairo_surface_t *source;
- cairo_pattern_t *pattern;
-
- cairo_paint (cr);
-
- source = create_source (cairo_get_target (cr), 2560, 1280);
- pattern = cairo_pattern_create_for_surface (source);
- cairo_surface_destroy (source);
-
- cairo_pattern_set_filter (pattern, CAIRO_FILTER_NEAREST);
- cairo_pattern_set_extend (pattern, CAIRO_EXTEND_NONE);
-
- draw_grid (cr, pattern, 50, 0);
- draw_grid (cr, pattern, 130, 0);
- draw_grid (cr, pattern, 210, 0);
- draw_grid (cr, pattern, 290, 0);
-
- draw_grid (cr, pattern, 50, 230);
- draw_grid (cr, pattern, 130, 230);
- draw_grid (cr, pattern, 210, 230);
- draw_grid (cr, pattern, 290, 230);
-
- cairo_pattern_destroy (pattern);
-
- return CAIRO_TEST_SUCCESS;
-}
-
-CAIRO_TEST (scale_offset_similar,
- "Tests drawing surfaces under various scales and transforms",
- "surface, scale-offset", /* keywords */
- NULL, /* requirements */
- 320, 320,
- NULL, draw)
-