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MASSIVE UPDATE ON THIS MATTER!

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Post edited December 13, 2020 by Stixsmaster
Just leaven a comment for those unaware I found a more viable method
If you want proper scaling widescreen using Direct 3D is the only working way. 3DFX stretches the image as you can see in the screeenshots.
I was finding the performance of Nglide to be subpar so I gave the dgVoodooCpl method a shot and results are alot better.