From: Jonas Ådahl <jadahl@gmail.com>
Date: Thu, 26 Oct 2017 09:15:46 +0000 (+0200)
Subject: st-shadow: Ceil size before comparing with texture
X-Git-Tag: archive/raspbian/50.5-1+rpi1~1^2~888^2^2~71
X-Git-Url: https://dgit.raspbian.org/%22http://www.example.com/cgi/%22/%22http:/www.example.com/cgi/%22?a=commitdiff_plain;h=5d4a804c90ef824f7edc76d460cd4dd495b5df15;p=gnome-shell.git

st-shadow: Ceil size before comparing with texture

A fractional resource scale would mean we never use the fast path for
creating the shadow, because we'd cast the int to a float before
comparing, which would never match.

Instead compare the expected texture size with the source texture, to
actually potentially trigger the fast path.

https://bugzilla.gnome.org/show_bug.cgi?id=765011
---

diff --git a/src/st/st-private.c b/src/st/st-private.c
index c9bcf4c3a..688b17b78 100644
--- a/src/st/st-private.c
+++ b/src/st/st-private.c
@@ -444,8 +444,8 @@ _st_create_shadow_pipeline_from_actor (StShadow     *shadow_spec,
   if (!clutter_actor_get_resource_scale (actor, &resource_scale))
     return NULL;
 
-  width *= resource_scale;
-  height *= resource_scale;
+  width = ceilf (width * resource_scale);
+  height = ceilf (height * resource_scale);
 
   image = clutter_actor_get_content (actor);
   if (image && CLUTTER_IS_IMAGE (image))