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/*
* Copyright © 2008 Red Hat, Inc.
* Copyright © 2010 Intel Corporation
*
* 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: Carl D. Worth <cworth@cworth.org>
* Chris Wilson <chris@chris-wilson.co.uk>
*/
#include "cairo-test.h"
#define POINTS 10
#define STEP (1.0 / POINTS)
#define PAD 1
#define WIDTH (PAD + POINTS * 2 + PAD)
#define HEIGHT (WIDTH)
/* A single, opaque pixel */
static const uint32_t black_pixel = 0xffffffff;
static cairo_test_status_t
draw (cairo_t *cr, int width, int height)
{
cairo_surface_t *surface;
cairo_pattern_t *mask;
int i, j;
surface = cairo_image_surface_create_for_data ((unsigned char *) &black_pixel,
CAIRO_FORMAT_A8,
1, 1, 4);
mask = cairo_pattern_create_for_surface (surface);
cairo_pattern_set_filter (mask, CAIRO_FILTER_NEAREST);
cairo_surface_destroy (surface);
/* Fill background white */
cairo_set_source_rgb (cr, 1, 1, 1);
cairo_paint (cr);
cairo_translate (cr, PAD, PAD);
cairo_set_source_rgb (cr, 0, 0, 0);
for (i = 0; i < POINTS; i++) {
for (j = 0; j < POINTS; j++) {
cairo_matrix_t m;
cairo_matrix_init_translate (&m,
-(2 * i + i * STEP),
-(2 * j + j * STEP));
cairo_pattern_set_matrix (mask, &m);
cairo_mask (cr, mask);
}
}
cairo_pattern_destroy (mask);
return CAIRO_TEST_SUCCESS;
}
CAIRO_TEST (a1_mask_sample,
"Test sample position when masking with FILTER_NEAREST",
"image, alpha", /* keywords */
"target=raster", /* requirements */
WIDTH, HEIGHT,
NULL, draw)
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