Don't check the extension string every frame

9 years ago · 913bbe347b
parent c60388afb6
commit 913bbe347b
1 changed files with 5 additions and 1 deletions
--- a/apps/openmw/mwrender/water.cpp
+++ b/apps/openmw/mwrender/water.cpp
@ -426,8 +426,12 @@ class DepthClampCallback : public osg::Drawable::DrawCallback
 public:
    virtual void drawImplementation(osg::RenderInfo& renderInfo,const osg::Drawable* drawable) const
    {
-        if (!osg::isGLExtensionOrVersionSupported(renderInfo.getState()->getContextID(), "GL_ARB_depth_clamp", 3.3))
+        static bool supported = osg::isGLExtensionOrVersionSupported(renderInfo.getState()->getContextID(), "GL_ARB_depth_clamp", 3.3);
+        if (!supported)
+        {
            drawable->drawImplementation(renderInfo);
+            return;
+        }

        glEnable(GL_DEPTH_CLAMP);