I don’t understand if it’s a shader or a different feature, what do you think?
I don’t know of any way to do it currently, but I would think it would just be a combination of palette and tone mapping.
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Yet by default several NES cores have some color tones… is it still not faithful?
It’s a matter of gamut. Modern monitors can generate some portion of the sRGB colorspace, while the NES generates some colors outside of that gamut, so there’s no way to show those NES-generated colors on an sRGB-restricted display.
The HDR color gamut is larger, and it should be able to show them.
Now, to be clear, this isn’t a matter of “omg mega man was actually green!” or something extreme like that. It’s very faint instances of “this cyan should be slightly more saturated,” etc.
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Best viewed in fullscreen or zoomed in, in HDR mode or on a screen with bright settings for the full effect. You can download the .jxr files as well for proper HDR viewing.
.jxr image file with HDR image as well as to SDR image with HDR to SDR tonemapping
.jxr image file with HDR image as well as to SDR image with HDR to SDR tonemapping
.jxr image file with HDR image as well as to SDR image with HDR to SDR tonemapping
I don’t see why the same thing or something similar can’t already be done in RetroArch using either the built-in HDR implementation, Sony Megatron Colour Video Monitor, Windows AutoHDR or Reshade with either Sony Megatron Colour Video Monitor plus AutoHDR for Reshade or some other HDR Tonemapping shader like Lillium’s.
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