1 files changed, 58 insertions, 0 deletions
diff --git a/src/pixman/test/a1-trap-test.c b/src/pixman/test/a1-trap-test.c
new file mode 100644
index 0000000..c2b4883
--- /dev/null
+++ b/src/pixman/test/a1-trap-test.c
@@ -0,0 +1,58 @@
+#include <assert.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include "utils.h"
+
+int
+main (int argc, char **argv)
+{
+#define WIDTH 20
+#define HEIGHT 20
+
+    pixman_image_t *src_img;
+    pixman_image_t *mask_img;
+    pixman_image_t *dest_img;
+    pixman_trap_t trap;
+    pixman_color_t red = { 0xffff, 0x0000, 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_double_to_fixed (0.5);
+    trap.top.r = pixman_double_to_fixed (1.5);
+    trap.top.y = pixman_double_to_fixed (0.5);
+
+    trap.bot.l = pixman_double_to_fixed (0.5);
+    trap.bot.r = pixman_double_to_fixed (1.5);
+    trap.bot.y = pixman_double_to_fixed (1.5);
+
+    mask_img = pixman_image_create_bits (
+	PIXMAN_a1, WIDTH, HEIGHT, mbits, WIDTH);
+    src_img = pixman_image_create_solid_fill (&red);
+    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);
+
+    assert (bits[0] == 0xffff0000);
+    assert (bits[1] == 0xffffffff);
+    assert (bits[1 * WIDTH + 0] == 0xffffffff);
+    assert (bits[1 * WIDTH + 1] == 0xffffffff);
+
+    /* The check-formats test depends on operator_name() and format_name() returning
+     * these precise formats, so if those change, check-formats.c must be updated too.
+     */
+    assert (
+        strcmp (operator_name (PIXMAN_OP_DISJOINT_OVER), "PIXMAN_OP_DISJOINT_OVER") == 0);
+    assert (
+        strcmp (format_name (PIXMAN_r5g6b5), "r5g6b5") == 0);
+    
+    return 0;
+}