blob: caf68777e7d2c86f77add2d11c04dc3368637e96 [file] [log] [blame]
/*
* Copyright 2012 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: Chris Wilson <chris@chris-wilson.co.uk>
*/
#include "cairo-test.h"
/* Test the fidelity of the rasterisation, because Cairo is my favourite
* driver test suite.
*/
#define GENERATE_REFERENCE 0
#define WIDTH 256
#define HEIGHT 40
#include "../src/cairo-fixed-type-private.h"
#define PRECISION (1 << CAIRO_FIXED_FRAC_BITS)
static cairo_test_status_t
vertical (cairo_t *cr, int width, int height)
{
int x;
cairo_set_source_rgb (cr, 0.0, 0.0, 0.0);
cairo_paint (cr);
cairo_set_source_rgba (cr, 1, 1, 1, 1);
for (x = -HEIGHT*PRECISION-2; x <= (WIDTH+HEIGHT)*PRECISION+2; x += 4) {
cairo_move_to (cr, x / (double)PRECISION - 2, -2);
cairo_rel_line_to (cr, 0, HEIGHT + 4);
}
cairo_set_line_width (cr, 2 / (double)PRECISION);
cairo_stroke (cr);
return CAIRO_TEST_SUCCESS;
}
static cairo_test_status_t
horizontal (cairo_t *cr, int width, int height)
{
int x;
cairo_set_source_rgb (cr, 0.0, 0.0, 0.0);
cairo_paint (cr);
cairo_set_source_rgba (cr, 1, 1, 1, 1);
for (x = -HEIGHT*PRECISION-2; x <= (WIDTH+HEIGHT)*PRECISION+2; x += 4) {
cairo_move_to (cr, -2, x / (double)PRECISION - 2);
cairo_rel_line_to (cr, HEIGHT + 4, 0);
}
cairo_set_line_width (cr, 2 / (double)PRECISION);
cairo_stroke (cr);
return CAIRO_TEST_SUCCESS;
}
static cairo_test_status_t
diagonal (cairo_t *cr, int width, int height)
{
int x;
cairo_set_source_rgb (cr, 0.0, 0.0, 0.0);
cairo_paint (cr);
cairo_set_source_rgba (cr, 1, 1, 1, 1);
for (x = -HEIGHT*PRECISION-2; x <= (WIDTH+HEIGHT)*PRECISION+2; x += 6) {
cairo_move_to (cr, x / (double)PRECISION - 2, -2);
cairo_rel_line_to (cr, HEIGHT + 4, HEIGHT + 4);
}
cairo_set_line_width (cr, 2 / (double)PRECISION);
cairo_stroke (cr);
return CAIRO_TEST_SUCCESS;
}
CAIRO_TEST (sample_vertical,
"Check the fidelity of the rasterisation.",
NULL, /* keywords */
"target=raster slow", /* requirements */
WIDTH, HEIGHT,
NULL, vertical)
CAIRO_TEST (sample_horizontal,
"Check the fidelity of the rasterisation.",
NULL, /* keywords */
"target=raster slow", /* requirements */
WIDTH, HEIGHT,
NULL, horizontal)
CAIRO_TEST (sample_diagonal,
"Check the fidelity of the rasterisation.",
NULL, /* keywords */
"target=raster slow", /* requirements */
WIDTH, HEIGHT,
NULL, diagonal)