xenocara/lib/pixman/test/region-translate-test.c

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#include <pixman.h>
#include <assert.h>
/* Pixman had a bug where 32bit regions where clipped to 16bit sizes when
* pixman_region32_translate() was called. This test exercises that bug.
*/
#define LARGE 32000
int
main (int argc, char **argv)
{
pixman_box32_t rect = { -LARGE, -LARGE, LARGE, LARGE };
pixman_region32_t r1, r2;
pixman_region32_init_rects (&r1, &rect, 1);
pixman_region32_init_rect (&r2, rect.x1, rect.y1, rect.x2 - rect.x1, rect.y2 - rect.y1);
assert (pixman_region32_equal (&r1, &r2));
pixman_region32_translate (&r1, -LARGE, LARGE);
pixman_region32_translate (&r1, LARGE, -LARGE);
assert (pixman_region32_equal (&r1, &r2));
pixman_region32_fini (&r1);
pixman_region32_fini (&r2);
return 0;
}