Fix nasty alignment bug in image size computation.

diff --git a/glsize.hpp b/glsize.hpp
index 777b43039c85aef6d77d3fa25111551fdd6f8a6b..1e91083716ddaf4598e789bb8ae4f13100546b09 100644 (file)
--- a/glsize.hpp
+++ b/glsize.hpp
@@ -426,7 +426,7 @@ _is_pot(X x) {
 template<class X, class Y>
 static inline X
 _align(X x, Y y) {
-    return (x + (y - 1)) & (y - 1);
+    return (x + (y - 1)) & ~(y - 1);
 }
 
 static inline size_t