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Diffstat (limited to 'libs/cairo-1.16.0/test/sample.c')
| -rw-r--r-- | libs/cairo-1.16.0/test/sample.c | 117 |
1 files changed, 117 insertions, 0 deletions
diff --git a/libs/cairo-1.16.0/test/sample.c b/libs/cairo-1.16.0/test/sample.c new file mode 100644 index 0000000..caf6877 --- /dev/null +++ b/libs/cairo-1.16.0/test/sample.c @@ -0,0 +1,117 @@ +/* + * 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) |