BEEN_Nath_58 wrote on 2022-06-17, 04:15:
Supposing linedoubling still exists, still AMD render screens at native resolution for application resolution < 640x480. They could've used linedoubling, but they didn't!
Again, you do not know that. Without any measuring equipment, you have no idea what the GPU does internally with the signal before sending it to your screen.
BEEN_Nath_58 wrote on 2022-06-17, 04:15:
Can it mean linedoubling isn't supported on displays anymore or are they too afraid they'll lose users after they see an "Input out of range"
1) Linedoubling itself doesn't need support on displays. As far as the display is concerned, it's just getting a higher resolution image from the GPU. More compatibility problems ("Input of range") would be caused by the GPU outputting low resolutions without linedoubling.
2) Linedoubling lower resolutions have always been the standard. There's literally no reason to drop it.
There of course a possibility that a GPU sends the signal straight to the monitor (who knows what the internal logics are for which resolutions to linedouble), but the crux of the issue here is: you don't know and neither will most people submitting data to answer you. If you really want to know the lowest resolutions many modern displays support, you need a thorough testing methodology.
BEEN_Nath_58 wrote on 2022-06-17, 04:15:
(they don't support less than 640x480 as I said) ?
Aren't you claiming you're getting 100x100 output? And you're also claiming they don't support less than 640x480? That seems rather contradictory.
There are no presets setting less than 640x480 in Windows itself of course, but I'm fairly sure that's because of recommendations by Microsoft. Nvidia doesn't show any less than 800x600, but 640x480 is supported just fine when set by an application.