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-rw-r--r--qemu/pixman/test/region-test.c125
1 files changed, 125 insertions, 0 deletions
diff --git a/qemu/pixman/test/region-test.c b/qemu/pixman/test/region-test.c
new file mode 100644
index 000000000..bfc219bc7
--- /dev/null
+++ b/qemu/pixman/test/region-test.c
@@ -0,0 +1,125 @@
+#include <assert.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include "utils.h"
+
+int
+main ()
+{
+ pixman_region32_t r1;
+ pixman_region32_t r2;
+ pixman_region32_t r3;
+ pixman_box32_t boxes[] = {
+ { 10, 10, 20, 20 },
+ { 30, 30, 30, 40 },
+ { 50, 45, 60, 44 },
+ };
+ pixman_box32_t boxes2[] = {
+ { 2, 6, 7, 6 },
+ { 4, 1, 6, 7 },
+ };
+ pixman_box32_t boxes3[] = {
+ { 2, 6, 7, 6 },
+ { 4, 1, 6, 1 },
+ };
+ int i, j;
+ pixman_box32_t *b;
+ pixman_image_t *image, *fill;
+ pixman_color_t white = {
+ 0xffff,
+ 0xffff,
+ 0xffff,
+ 0xffff
+ };
+
+ prng_srand (0);
+
+ /* This used to go into an infinite loop before pixman-region.c
+ * was fixed to not use explict "short" variables
+ */
+ pixman_region32_init_rect (&r1, 0, 0, 20, 64000);
+ pixman_region32_init_rect (&r2, 0, 0, 20, 64000);
+ pixman_region32_init_rect (&r3, 0, 0, 20, 64000);
+
+ pixman_region32_subtract (&r1, &r2, &r3);
+
+
+ /* This would produce a region containing an empty
+ * rectangle in it. Such regions are considered malformed,
+ * but using an empty rectangle for initialization should
+ * work.
+ */
+ pixman_region32_init_rects (&r1, boxes, 3);
+
+ b = pixman_region32_rectangles (&r1, &i);
+
+ assert (i == 1);
+
+ while (i--)
+ {
+ assert (b[i].x1 < b[i].x2);
+ assert (b[i].y1 < b[i].y2);
+ }
+
+ /* This would produce a rectangle containing the bounding box
+ * of the two rectangles. The correct result is to eliminate
+ * the broken rectangle.
+ */
+ pixman_region32_init_rects (&r1, boxes2, 2);
+
+ b = pixman_region32_rectangles (&r1, &i);
+
+ assert (i == 1);
+
+ assert (b[0].x1 == 4);
+ assert (b[0].y1 == 1);
+ assert (b[0].x2 == 6);
+ assert (b[0].y2 == 7);
+
+ /* This should produce an empty region */
+ pixman_region32_init_rects (&r1, boxes3, 2);
+
+ b = pixman_region32_rectangles (&r1, &i);
+
+ assert (i == 0);
+
+ fill = pixman_image_create_solid_fill (&white);
+ for (i = 0; i < 100; i++)
+ {
+ int image_size = 128;
+
+ pixman_region32_init (&r1);
+
+ /* Add some random rectangles */
+ for (j = 0; j < 64; j++)
+ pixman_region32_union_rect (&r1, &r1,
+ prng_rand_n (image_size),
+ prng_rand_n (image_size),
+ prng_rand_n (25),
+ prng_rand_n (25));
+
+ /* Clip to image size */
+ pixman_region32_init_rect (&r2, 0, 0, image_size, image_size);
+ pixman_region32_intersect (&r1, &r1, &r2);
+ pixman_region32_fini (&r2);
+
+ /* render region to a1 mask */
+ image = pixman_image_create_bits (PIXMAN_a1, image_size, image_size, NULL, 0);
+ pixman_image_set_clip_region32 (image, &r1);
+ pixman_image_composite32 (PIXMAN_OP_SRC,
+ fill, NULL, image,
+ 0, 0, 0, 0, 0, 0,
+ image_size, image_size);
+ pixman_region32_init_from_image (&r2, image);
+
+ pixman_image_unref (image);
+
+ assert (pixman_region32_equal (&r1, &r2));
+ pixman_region32_fini (&r1);
+ pixman_region32_fini (&r2);
+
+ }
+ pixman_image_unref (fill);
+
+ return 0;
+}