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authormarha <marha@users.sourceforge.net>2010-01-19 23:10:44 +0000
committermarha <marha@users.sourceforge.net>2010-01-19 23:10:44 +0000
commita9768b035f2c47be0908520474073cc68d225d8a (patch)
treef9894781b3f1d5b36d5a5fa284c82ad36c9cf917 /pixman/test/alphamap.c
parentb152ebf4b66368e1cbfda1ae81cef29bf9c00bb7 (diff)
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Updated to:
libX11-1.3.3 pixman-0.17.4
Diffstat (limited to 'pixman/test/alphamap.c')
-rw-r--r--pixman/test/alphamap.c49
1 files changed, 49 insertions, 0 deletions
diff --git a/pixman/test/alphamap.c b/pixman/test/alphamap.c
new file mode 100644
index 000000000..e6a25efcb
--- /dev/null
+++ b/pixman/test/alphamap.c
@@ -0,0 +1,49 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include "utils.h"
+
+#define WIDTH 400
+#define HEIGHT 200
+
+int
+main (int argc, char **argv)
+{
+ uint8_t *alpha = make_random_bytes (WIDTH * HEIGHT);
+ uint32_t *src = (uint32_t *)make_random_bytes (WIDTH * HEIGHT * 4);
+ uint32_t *dest = (uint32_t *)make_random_bytes (WIDTH * HEIGHT * 4);
+ int i;
+
+ pixman_image_t *a = pixman_image_create_bits (PIXMAN_a8, WIDTH, HEIGHT, (uint32_t *)alpha, WIDTH);
+ pixman_image_t *d = pixman_image_create_bits (PIXMAN_a8r8g8b8, WIDTH, HEIGHT, dest, WIDTH * 4);
+
+ for (i = 0; i < 2; ++i)
+ {
+ pixman_format_code_t sformat = (i == 0)? PIXMAN_a8r8g8b8 : PIXMAN_a2r10g10b10;
+ pixman_image_t *s = pixman_image_create_bits (sformat, WIDTH, HEIGHT, src, WIDTH * 4);
+ int j, k;
+
+ pixman_image_set_alpha_map (s, a, 0, 0);
+
+ pixman_image_composite (PIXMAN_OP_SRC, s, NULL, d, 0, 0, 0, 0, 0, 0, WIDTH, HEIGHT);
+
+ for (j = 0; j < HEIGHT; ++j)
+ {
+ for (k = 0; k < WIDTH; ++k)
+ {
+ uint8_t ap = ((uint8_t *)alpha)[j * WIDTH + k];
+ uint32_t dap = (dest[j * WIDTH + k] >> 24);
+ uint32_t sap = (src[j * WIDTH + k] >> 24);
+
+ if (ap != dap)
+ {
+ printf ("Wrong alpha value at (%d, %d). Should be %d; got %d (src was %d)\n", k, j, ap, dap, sap);
+ return 1;
+ }
+ }
+ }
+
+ pixman_image_unref (s);
+ }
+
+ return 0;
+}