glslang: include 0 as not being a power of 2

git-svn-id: https://cvs.khronos.org/svn/repos/ogl/trunk/ecosystem/public/sdk/tools/glslang@30613 e7fa87d3-cd2b-0410-9028-fcbf551c1848
2015-04-08 15:51:14 +00:00
parent 24c9cc57ad
commit 837c6380f3
3 changed files with 8 additions and 3 deletions
--- a/glslang/Include/Common.h
+++ b/glslang/Include/Common.h
@@ -188,6 +188,9 @@ const int GlslangMaxTokenLength = 1024;

 template <class T> bool IsPow2(T powerOf2)
 {
+    if (powerOf2 <= 0)
+        return false;
+
    return (powerOf2 & (powerOf2 - 1)) == 0;
 }