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Diffstat (limited to 'test/aliasing.c')
| -rw-r--r-- | test/aliasing.c | 100 |
1 files changed, 0 insertions, 100 deletions
diff --git a/test/aliasing.c b/test/aliasing.c deleted file mode 100644 index 73c1f1ae2..000000000 --- a/test/aliasing.c +++ /dev/null @@ -1,100 +0,0 @@ -/* - * 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: Chris Wilson <chris@chris-wilson.co.uk> - */ - -#include "cairo-test.h" - -/* A fun little test to explore color fringing in various experimental - * subpixel rasterisation techniques. - */ - -#define WIDTH 60 -#define HEIGHT 40 - -static const struct color { - double red, green, blue; -} color[] = { - { 1, 1, 1 }, - { 0, 0, 0 }, - { 1, 0, 0 }, - { 0, 1, 0 }, - { 0, 0, 1 }, - { 1, 1, 0 }, - { 0, 1, 1 }, - { 1, 0, 1 }, - { .5, .5, .5 }, -}; - -#define NUM_COLORS ARRAY_LENGTH (color) - -static void -object (cairo_t *cr, const struct color *fg, const struct color *bg) -{ - cairo_set_source_rgb (cr, bg->red, bg->green, bg->blue); - cairo_rectangle (cr, 0, 0, WIDTH, HEIGHT); - cairo_fill (cr); - - cairo_set_source_rgb (cr, fg->red, fg->green, fg->blue); - cairo_save (cr); - cairo_scale (cr, WIDTH, HEIGHT); - cairo_arc (cr, .5, .5, .5 - 4. / MAX (WIDTH, HEIGHT), 0, 2 * M_PI); - cairo_fill (cr); - cairo_arc (cr, .5, .5, .5 - 2. / MAX (WIDTH, HEIGHT), 0, 2 * M_PI); - cairo_restore (cr); - cairo_set_line_width (cr, 1.); - cairo_stroke (cr); - - cairo_set_source_rgb (cr, bg->red, bg->green, bg->blue); - cairo_set_line_width (cr, 4.); - cairo_move_to (cr, 4, HEIGHT-4); - cairo_line_to (cr, WIDTH-12, 4); - cairo_move_to (cr, 12, HEIGHT-4); - cairo_line_to (cr, WIDTH-4, 4); - cairo_stroke (cr); -} - -static cairo_test_status_t -draw (cairo_t *cr, int width, int height) -{ - unsigned int i, j; - - for (i = 0; i < NUM_COLORS; i++) { - for (j = 0; j < NUM_COLORS; j++) { - cairo_save (cr); - cairo_translate (cr, i * WIDTH, j * HEIGHT); - object (cr, &color[i], &color[j]); - cairo_restore (cr); - } - } - - return CAIRO_TEST_SUCCESS; -} - -CAIRO_TEST (aliasing, - "Check for subpixel aliasing and color fringing", - "rasterisation", /* keywords */ - "target=raster", /* requirements */ - NUM_COLORS * WIDTH, NUM_COLORS * HEIGHT, - NULL, draw) |