Quote:
Originally Posted by tobindac
I noticed that ordered dithering is a very noisy process. I found it fun lately to turn on 1bit output and see very obviously some algorithmic patterns. It appears not dithering at all gives the most "stable" unnoisy picture while error diffusion is more stable and 'random' is a total mess.
I'm surprised, but it appears no dithering at all is a viable choice.
Choices..
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No dither at all is NOT a viable choice.
I am not at all sure how one could conclude dithering is bad when watching 1-bit output. Watching 1-bit output without dithering makes it hard to see what is going on. Almost all detail is lost. Turn off "change dither for every frame" if you want a more stable image, DO NOT turn of dithering entirely. Ordered dithering has very low apparent noise even at only 4-bit (256 colors), especially with "change dither for every frame" off.
Quote:
Originally Posted by Ver Greeneyes
But - sure, if the noise bothers you when madVR is set to the correct output bitdepth, turn it off. Or turn off "change dither for every frame", which will make it less effective but might make it less visible (except on very uniform surfaces that are displayed for a considerable length of time). But it does mean you'll get more of a rounding error on average, reducing color accuracy.
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"change dither for every frame" doesn't make dithering less effective or less accurate. It makes dither patterns easier to see but average rounding error and color accuracy is the same with or without "change dither for every frame".
Turning off "change dither for every frame" trades more visible dither patters for less apparent dither noise.