xenocara/lib/pixman/demos/trap-test.c
matthieu 0def8ce1ff Update to pixman 0.22.2.
0.22.0 was tested by many. 0.22.2 only add a few bug fixes.
Note that on amd64 a recent ld.so is needed to avoid random bus errors.
2011-07-24 13:05:47 +00:00

50 lines
1.4 KiB
C

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "pixman.h"
#include "gtk-utils.h"
int
main (int argc, char **argv)
{
#define WIDTH 200
#define HEIGHT 200
pixman_image_t *src_img;
pixman_image_t *mask_img;
pixman_image_t *dest_img;
pixman_trap_t trap;
pixman_color_t white = { 0x0000, 0xffff, 0x0000, 0xffff };
uint32_t *bits = malloc (WIDTH * HEIGHT * 4);
uint32_t *mbits = malloc (WIDTH * HEIGHT);
memset (mbits, 0, WIDTH * HEIGHT);
memset (bits, 0xff, WIDTH * HEIGHT * 4);
trap.top.l = pixman_int_to_fixed (50) + 0x8000;
trap.top.r = pixman_int_to_fixed (150) + 0x8000;
trap.top.y = pixman_int_to_fixed (30);
trap.bot.l = pixman_int_to_fixed (50) + 0x8000;
trap.bot.r = pixman_int_to_fixed (150) + 0x8000;
trap.bot.y = pixman_int_to_fixed (150);
mask_img = pixman_image_create_bits (PIXMAN_a8, WIDTH, HEIGHT, mbits, WIDTH);
src_img = pixman_image_create_solid_fill (&white);
dest_img = pixman_image_create_bits (PIXMAN_a8r8g8b8, WIDTH, HEIGHT, bits, WIDTH * 4);
pixman_add_traps (mask_img, 0, 0, 1, &trap);
pixman_image_composite (PIXMAN_OP_OVER,
src_img, mask_img, dest_img,
0, 0, 0, 0, 0, 0, WIDTH, HEIGHT);
show_image (dest_img);
pixman_image_unref (src_img);
pixman_image_unref (dest_img);
free (bits);
return 0;
}