Quote:
Originally Posted by Shiandow
Since NNEDI3 is nonlinear the math doesn't exactly work out to be the same.
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Yeah, it won't be identical, but probably in the end it will look similar.
Quote:
Originally Posted by Shiandow
I fear I've been slightly unclear. This is happened when I put an empty file called YCbCr in the MadVR folder, and used NNEDI3 for luma doubling and Jinc3AR for image upscaling. It seems that MadVR skips the YCbCr -> RGB conversion but doesn't skip the RGB -> YCbCr conversion after the pre-resize pixel shaders. Which means that it's performing NNEDI3 on the wrong colour space which lowers the picture quality.
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Oooh, I think you're right! Sorry about that. I had implemented the "YCbCr" empty file hack just a long time ago for testing purposes and when implementing the RGB->YCbCr->RGB conversions for NNEDI3 I didn't think of that the "YCbCr" would need special treatment. So it seems NNEDI3 image doubling doesn't work well with the "YCbCr" empty file hack atm. Will put that on my to do list to fix...