51 lines
1.4 KiB
C
51 lines
1.4 KiB
C
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#include <assert.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include "pixman.h"
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int
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main (int argc, char **argv)
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{
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#define WIDTH 20
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#define HEIGHT 20
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pixman_image_t *src_img;
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pixman_image_t *mask_img;
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pixman_image_t *dest_img;
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pixman_trap_t trap;
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pixman_color_t red = { 0xffff, 0x0000, 0x0000, 0xffff };
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uint32_t *bits = malloc (WIDTH * HEIGHT * 4);
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uint32_t *mbits = malloc (WIDTH * HEIGHT);
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memset (mbits, 0, WIDTH * HEIGHT);
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memset (bits, 0xff, WIDTH * HEIGHT * 4);
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trap.top.l = pixman_double_to_fixed (0.5);
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trap.top.r = pixman_double_to_fixed (1.5);
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trap.top.y = pixman_double_to_fixed (0.5);
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trap.bot.l = pixman_double_to_fixed (0.5);
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trap.bot.r = pixman_double_to_fixed (1.5);
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trap.bot.y = pixman_double_to_fixed (1.5);
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mask_img = pixman_image_create_bits (
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PIXMAN_a1, WIDTH, HEIGHT, mbits, WIDTH);
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src_img = pixman_image_create_solid_fill (&red);
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dest_img = pixman_image_create_bits (
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PIXMAN_a8r8g8b8, WIDTH, HEIGHT, bits, WIDTH * 4);
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pixman_add_traps (mask_img, 0, 0, 1, &trap);
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pixman_image_composite (PIXMAN_OP_OVER,
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src_img, mask_img, dest_img,
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0, 0, 0, 0, 0, 0, WIDTH, HEIGHT);
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assert (bits[0] == 0xffff0000);
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assert (bits[1] == 0xffffffff);
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assert (bits[1 * WIDTH + 0] == 0xffffffff);
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assert (bits[1 * WIDTH + 1] == 0xffffffff);
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return 0;
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}
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