[xlib] Set proper bpp when computing format from masks

Fixing omission in caa9eed4646e78a62ffb49d9c4f48c0b351c7a7f

1 files changed, 1 insertions, 0 deletions

diff --git a/src/cairo-xlib-surface.c b/src/cairo-xlib-surface.c
index 957e4360..fe87561d 100644
--- a/src/cairo-xlib-surface.c
+++ b/src/cairo-xlib-surface.c
@@ -1001,6 +1001,7 @@ _draw_image_surface (cairo_xlib_surface_t   *surface,
         image_masks.red_mask   = surface->r_mask;
         image_masks.green_mask = surface->g_mask;
         image_masks.blue_mask  = surface->b_mask;
+        image_masks.bpp        = surface->depth;
         ret = _pixman_format_from_masks (&image_masks, &intermediate_format);
         assert (ret);