diff options
Diffstat (limited to 'pixman/pixman-bits-image.c')
| -rw-r--r-- | pixman/pixman-bits-image.c | 52 |
1 files changed, 0 insertions, 52 deletions
diff --git a/pixman/pixman-bits-image.c b/pixman/pixman-bits-image.c index 6befcbb..3d78ff0 100644 --- a/pixman/pixman-bits-image.c +++ b/pixman/pixman-bits-image.c @@ -875,55 +875,6 @@ bits_image_fetch_untransformed_64 (pixman_image_t * image, } } -static pixman_bool_t out_of_bounds_workaround = TRUE; - -/* Old X servers rely on out-of-bounds accesses when they are asked - * to composite with a window as the source. They create a pixman image - * pointing to some bogus position in memory, but then they set a clip - * region to the position where the actual bits are. - * - * Due to a bug in old versions of pixman, where it would not clip - * against the image bounds when a clip region was set, this would - * actually work. So by default we allow certain out-of-bound access - * to happen unless explicitly disabled. - * - * Fixed X servers should call this function to disable the workaround. - */ -PIXMAN_EXPORT void -pixman_disable_out_of_bounds_workaround (void) -{ - out_of_bounds_workaround = FALSE; -} - -static pixman_bool_t -source_image_needs_out_of_bounds_workaround (bits_image_t *image) -{ - if (image->common.clip_sources && - image->common.repeat == PIXMAN_REPEAT_NONE && - image->common.have_clip_region && - out_of_bounds_workaround) - { - if (!image->common.client_clip) - { - /* There is no client clip, so if the clip region extends beyond the - * drawable geometry, it must be because the X server generated the - * bogus clip region. - */ - const pixman_box32_t *extents = pixman_region32_extents (&image->common.clip_region); - - if (extents->x1 >= 0 && extents->x2 <= image->width && - extents->y1 >= 0 && extents->y2 <= image->height) - { - return FALSE; - } - } - - return TRUE; - } - - return FALSE; -} - static void bits_image_property_changed (pixman_image_t *image) { @@ -985,9 +936,6 @@ bits_image_property_changed (pixman_image_t *image) bits->store_scanline_64 = bits_image_store_scanline_64; bits->store_scanline_32 = bits_image_store_scanline_32; - - bits->common.need_workaround = - source_image_needs_out_of_bounds_workaround (bits); } static uint32_t * |