glretrace: Fix occlusion query support detection.

GL_ARB_occlusion_query was made part of core OpenGL 1.5.  Furthermore we
don't use the *ARB entry-points, so we really rely on the core support.

Futhermore, on Mac OS, core 3.2+ profiles do not list core extensions,
so we were wrongly assuming it was missing.

Fixes #358.

1 files changed, 5 insertions, 0 deletions

diff --git a/helpers/glprofile.hpp b/helpers/glprofile.hpp
index be2a111f..397777dd 100644
--- a/helpers/glprofile.hpp
+++ b/helpers/glprofile.hpp
@@ -84,6 +84,11 @@ struct Profile {
                (major == refMajor && minor >= refMinor);
     }
 
+    inline bool
+    versionGreaterOrEqual(Api refApi, unsigned refMajor, unsigned refMinor) const {
+        return api == refApi && versionGreaterOrEqual(refMajor, refMinor);
+    }
+
     bool
     matches(const Profile expected) const;