Subtract x_off/y_off before conversion to integer.

They are fixed-point values, not integers.

Bug 22437, reported by Michel Dänzer.

diff --git a/pixman/pixman-bits-image.c b/pixman/pixman-bits-image.c
index 797bf85..e5d0bd0 100644 (file)
--- a/pixman/pixman-bits-image.c
+++ b/pixman/pixman-bits-image.c
@@ -414,8 +414,8 @@ bits_image_fetch_convolution_pixels (bits_image_t *image,
            int32_t x, y, x1, x2, y1, y2;
 
            /* Subtract pixman_fixed_e to ensure that 0.5 rounds to 0, not 1 */
-           x1 = pixman_fixed_to_int (coords[0] - pixman_fixed_e) - x_off;
-           y1 = pixman_fixed_to_int (coords[1] - pixman_fixed_e) - y_off;
+           x1 = pixman_fixed_to_int (coords[0] - pixman_fixed_e - x_off);
+           y1 = pixman_fixed_to_int (coords[1] - pixman_fixed_e - y_off);
            x2 = x1 + cwidth;
            y2 = y1 + cheight;