gistfile1.txt

    NSTimeInterval tempQuickSaveTime = _lastQuickSave;
    _lastQuickSave = [NSDate timeIntervalSinceReferenceDate];
    [self render];
    CGLLockContext(cgl_ctx);
    {
        glReadPixels((frameSize.width - textureNSSize.width) / 2,
                     (frameSize.height - textureNSSize.height) / 2,
                     textureIntSize.width, textureIntSize.height,
                     GL_RGB, GL_UNSIGNED_BYTE, [imageRep bitmapData]);
    }
    CGLUnlockContext(cgl_ctx);
    _lastQuickSave = tempQuickSaveTime;