/**
* Sets the OpenGL context associated with this GLCanvas to be the current GL context.
*
* @exception SWTException
* <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver
* </ul>
*/
public void setCurrent() {
checkWidget();
if (GLX.glXGetCurrentContext() == context) return;
int /*long*/ window = OS.GTK_WIDGET_WINDOW(handle);
int /*long*/ xDisplay = OS.gdk_x11_drawable_get_xdisplay(window);
GLX.glXMakeCurrent(xDisplay, xWindow, context);
}
/**
* Returns a boolean indicating whether the receiver's OpenGL context is the current context.
*
* @return true if the receiver holds the current OpenGL context, false otherwise
* @exception SWTException
* <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver
* </ul>
*/
public boolean isCurrent() {
checkWidget();
return GLX.glXGetCurrentContext() == context;
}