Add option for SSAA

[blackhand1001]

Super sampling Anti-Aliasing significantly improves the appearance and temporal stability of high resolution texture packs. It can be forced with NVIDIA control panel but it would be much better if this could be done in the plugin itself so that systems like the steam deck, and non NVIDIA systems can take advantage.

[Xii-Nyth]

Thanks for the tip on the driver settings. As a question how does it compare to just increasing the internal resolution modifier about the output?

[gonetz]

Thanks for the tip on the driver settings. As a question how does it compare to just increasing the internal resolution modifier about the output?

I have the same question: is enabling of SSAA somehow different from just increasing the internal resolution modifier?

Alas, I can't find how to enable SSAA in OpenGL context. It is probably a feature of NVidia drivers.

[blackhand1001]

It has a significantly smaller performance penalty vs doubling the internal resolution. Especially when it comes to the banjo tooie level unlock puzzles etc. I suspect certain really expensive framebuffer actions are not affected by ssaa but are by raising the internal resolution.