> > Yes, 3 or 4 is probably the point of diminishing returns. I screenshoted the same > > image from prescale 1-10 some years back and that was the finding. > > Same thing here, at 1280x1024 Prescale 3 looks better than 2 but going above 3 makes > no difference.
-prescale is an integer scaling factor applied to the image in both directions. -prescale 3 on a 320x240 game results in a 960x720 image being uploaded to the GPU, so if you're running 1280x1024 there's very little additional scaling for your video card to do and apply filtering on. At -prescale 4 you're uploading a 1280x960 image and there is basically nothing at all your GPU can do with it.
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