VolFix supports viewing charts via OpenGL only on NVIDIA video cards.

The mode is activated in Market Watch - setup - Global Options - Use OpenGL = ON.

In OpenGL mode, the terminal works much faster and much more responsive.

Not all video cards support OpenGL. Here might be errors on Intel and AMD/ATI video cards.

Before activating OpenGL, please make sure you have the latest video card drivers installed.
You can download your video card driver from the official web site:

To get video card OpenGL information use OpenGL Extensions Viewer.

If you have activated OpenGL and and error has occurred in VolFix, please disable OpenGL.