Quote:
Originally Posted by mark_k
I haven't done any more work on this since post #11 above. And I don't really know anything about shaders.
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I can understand, shaders are a thing in itself.. In the mean time a solution was provided by guest.r here:
point-prescale shader
It works the same way as the MAME prescale setting, i.e. you need to scale this shader 2x or 3x and set the bilinear option to true.
It works very well for lowres screens, but unfortunately there's some scaling issue on hires screens that you may or may not notice.