diff options
Diffstat (limited to 'libs/cairo-1.16.0/test/pixman-downscale.c')
| -rw-r--r-- | libs/cairo-1.16.0/test/pixman-downscale.c | 203 |
1 files changed, 203 insertions, 0 deletions
diff --git a/libs/cairo-1.16.0/test/pixman-downscale.c b/libs/cairo-1.16.0/test/pixman-downscale.c new file mode 100644 index 0000000..6b653d2 --- /dev/null +++ b/libs/cairo-1.16.0/test/pixman-downscale.c @@ -0,0 +1,203 @@ +/* + * Copyright © 2013 Samsung Electronics + * + * 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: Bryce Harrington <b.harrington@samsung.com> + */ + +/* This test exercises scaling a png image to smaller pixel dimensions + * + * Currently, this exercises several of pixman's scaling filters. + */ + +#include "cairo-test.h" + +#include <stdio.h> +#include <stdlib.h> + +#include <cairo.h> + +static const char png_filename[] = "quad-color.png"; + +/* Draw an image scaled down, with antialiasing disabled */ +static cairo_test_status_t +draw (cairo_t *cr, int width, int height, cairo_filter_t filter) +{ + const cairo_test_context_t *ctx = cairo_test_get_context (cr); + cairo_surface_t *image; + double x_scale, y_scale, scale; + + cairo_set_source_rgb (cr, 1, 1, 1); + image = cairo_test_create_surface_from_png (ctx, png_filename); + x_scale = width * 1.0 / cairo_image_surface_get_width (image); + y_scale = height * 1.0 / cairo_image_surface_get_height (image); + scale = x_scale < y_scale ? x_scale : y_scale; + + cairo_save (cr); + cairo_scale (cr, scale, scale); + cairo_set_source_surface (cr, image, 0, 0); + cairo_pattern_set_filter (cairo_get_source (cr), filter); + cairo_paint (cr); + cairo_restore (cr); + cairo_surface_destroy (image); + + return CAIRO_TEST_SUCCESS; +} + +static cairo_test_status_t +draw_fast (cairo_t *cr, int width, int height) +{ + return draw (cr, width, height, CAIRO_FILTER_FAST); +} + +static cairo_test_status_t +draw_good (cairo_t *cr, int width, int height) +{ + return draw (cr, width, height, CAIRO_FILTER_GOOD); +} + +static cairo_test_status_t +draw_best (cairo_t *cr, int width, int height) +{ + return draw (cr, width, height, CAIRO_FILTER_BEST); +} + +static cairo_test_status_t +draw_nearest (cairo_t *cr, int width, int height) +{ + return draw (cr, width, height, CAIRO_FILTER_NEAREST); +} + +static cairo_test_status_t +draw_bilinear (cairo_t *cr, int width, int height) +{ + return draw (cr, width, height, CAIRO_FILTER_BILINEAR); +} + +CAIRO_TEST (pixman_downscale_fast_96, + "Tests scaling to equivalent size using the fast filter", + "image, transform, raster, downscale", /* keywords */ + NULL, /* requirements */ + 96, 96, + NULL, draw_fast) + +CAIRO_TEST (pixman_downscale_fast_95, + "Tests downscaling by a single pixel using the fast filter", + "image, transform, raster, downscale", /* keywords */ + NULL, /* requirements */ + 95, 95, + NULL, draw_fast) + +CAIRO_TEST (pixman_downscale_fast_24, + "Tests downscaling by an even multiple using the fast filter", + "image, transform, raster, downscale", /* keywords */ + NULL, /* requirements */ + 24, 24, + NULL, draw_fast) + + +CAIRO_TEST (pixman_downscale_good_96, + "Tests scaling to equivalent size using the good filter", + "image, transform, raster, downscale", /* keywords */ + NULL, /* requirements */ + 96, 96, + NULL, draw_good) + +CAIRO_TEST (pixman_downscale_good_95, + "Tests downscaling by a single pixel using the good filter", + "image, transform, raster, downscale", /* keywords */ + NULL, /* requirements */ + 95, 95, + NULL, draw_good) + +CAIRO_TEST (pixman_downscale_good_24, + "Tests downscaling by an even multiple using the good filter", + "image, transform, raster, downscale", /* keywords */ + NULL, /* requirements */ + 24, 24, + NULL, draw_good) + + +CAIRO_TEST (pixman_downscale_best_96, + "Tests scaling to equivalent size using the best filter", + "image, transform, raster, downscale", /* keywords */ + NULL, /* requirements */ + 96, 96, + NULL, draw_best) + +CAIRO_TEST (pixman_downscale_best_95, + "Tests downscaling by a single pixel using the best filter", + "image, transform, raster, downscale", /* keywords */ + NULL, /* requirements */ + 95, 95, + NULL, draw_best) + +CAIRO_TEST (pixman_downscale_best_24, + "Tests downscaling by an even multiple using the best filter", + "image, transform, raster, downscale", /* keywords */ + NULL, /* requirements */ + 24, 24, + NULL, draw_best) + + +CAIRO_TEST (pixman_downscale_nearest_96, + "Tests scaling to equivalent size using the nearest filter", + "image, transform, raster, downscale", /* keywords */ + NULL, /* requirements */ + 96, 96, + NULL, draw_nearest) + +CAIRO_TEST (pixman_downscale_nearest_95, + "Tests downscaling by a single pixel using the nearest filter", + "image, transform, raster, downscale", /* keywords */ + NULL, /* requirements */ + 95, 95, + NULL, draw_nearest) + +CAIRO_TEST (pixman_downscale_nearest_24, + "Tests downscaling by an even multiple using the nearest filter", + "image, transform, raster, downscale", /* keywords */ + NULL, /* requirements */ + 24, 24, + NULL, draw_nearest) + + +CAIRO_TEST (pixman_downscale_bilinear_96, + "Tests scaling to equivalent size using the bilinear filter", + "image, transform, raster, downscale", /* keywords */ + NULL, /* requirements */ + 96, 96, + NULL, draw_bilinear) + +CAIRO_TEST (pixman_downscale_bilinear_95, + "Tests downscaling by a single pixel using the bilinear filter", + "image, transform, raster, downscale", /* keywords */ + NULL, /* requirements */ + 95, 95, + NULL, draw_bilinear) + +CAIRO_TEST (pixman_downscale_bilinear_24, + "Tests downscaling by an even multiple using the bilinear filter", + "image, transform, raster, downscale", /* keywords */ + NULL, /* requirements */ + 24, 24, + NULL, draw_bilinear) |