SDL support for glad

Engine/source/gfx/gl/sdl/gfxGLDevice.sdl.cpp

@@ -106,6 +106,10 @@ void GFXGLDevice::enumerateAdapters( Vector<GFXAdapter*> &adapterList )
        AssertFatal(0, err );
    }
 
+   // Init GL
+   loadGLCore();
+   loadGLExtensions(tempContext);
+
    //check minimun Opengl 3.2
    int major, minor;
    glGetIntegerv(GL_MAJOR_VERSION, &major);
@@ -114,8 +118,6 @@ void GFXGLDevice::enumerateAdapters( Vector<GFXAdapter*> &adapterList )
    {
       return;
    }
-
-   loadGLCore();
     
    GFXAdapter *toAdd = new GFXAdapter;
    toAdd->mIndex = 0;
@@ -163,7 +165,7 @@ void GFXGLDevice::init( const GFXVideoMode &mode, PlatformWindow *window )
     PlatformGL::MakeCurrentGL( x11Window, mContext );
         
     loadGLCore();
-    loadGLExtensions(0);
+    loadGLExtensions(mContext);
     
     // It is very important that extensions be loaded before we call initGLState()
     initGLState();

Engine/source/platformSDL/sdlPlatformGL.cpp

@@ -68,11 +68,6 @@ namespace PlatformGL
            Con::printf( err );
            AssertFatal(0, err );
        }
-
-       #ifdef TORQUE_OS_WIN
-		    // JTH: Update the internals of epoxy on windows.
-		    epoxy_handle_external_wglMakeCurrent();
-       #endif
    }
 
    void setVSync(const int i)