50 lines
1.3 KiB
C
50 lines
1.3 KiB
C
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#include <stdio.h>
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#include <stdlib.h>
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#include "utils.h"
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#define WIDTH 400
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#define HEIGHT 200
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int
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main (int argc, char **argv)
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{
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uint8_t *alpha = make_random_bytes (WIDTH * HEIGHT);
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uint32_t *src = (uint32_t *)make_random_bytes (WIDTH * HEIGHT * 4);
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uint32_t *dest = (uint32_t *)make_random_bytes (WIDTH * HEIGHT * 4);
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int i;
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pixman_image_t *a = pixman_image_create_bits (PIXMAN_a8, WIDTH, HEIGHT, (uint32_t *)alpha, WIDTH);
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pixman_image_t *d = pixman_image_create_bits (PIXMAN_a8r8g8b8, WIDTH, HEIGHT, dest, WIDTH * 4);
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for (i = 0; i < 2; ++i)
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{
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pixman_format_code_t sformat = (i == 0)? PIXMAN_a8r8g8b8 : PIXMAN_a2r10g10b10;
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pixman_image_t *s = pixman_image_create_bits (sformat, WIDTH, HEIGHT, src, WIDTH * 4);
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int j, k;
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pixman_image_set_alpha_map (s, a, 0, 0);
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pixman_image_composite (PIXMAN_OP_SRC, s, NULL, d, 0, 0, 0, 0, 0, 0, WIDTH, HEIGHT);
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for (j = 0; j < HEIGHT; ++j)
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{
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for (k = 0; k < WIDTH; ++k)
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{
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uint8_t ap = ((uint8_t *)alpha)[j * WIDTH + k];
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uint32_t dap = (dest[j * WIDTH + k] >> 24);
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uint32_t sap = (src[j * WIDTH + k] >> 24);
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if (ap != dap)
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{
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printf ("Wrong alpha value at (%d, %d). Should be %d; got %d (src was %d)\n", k, j, ap, dap, sap);
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return 1;
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}
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}
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}
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pixman_image_unref (s);
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}
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return 0;
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}
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