Widescreen Gaming Forum

Spatial/temporal dithering provides 30-bit color quality on 24-bit and 18-bit displays

http://ati.amd.com/products/Radeonhd4800/specs.html

To avoid confusion, bit depth is per RGB in the subject, while in advertisement its put together. 30-bit = 10-bit Red, 10-bit Blue and 10-bit Green.

To show how many colors we are talking about (and why its worthy to make a thread upon):

6-bit:
64x64x64= 262 144 colors

8-bit:

256x256x256 = 16 777 216 colors

10-bit:

1024x1024x1024 = 1 073 741 824 colors

Spatial/temporal dithering are methods to simulate more colors then what the screen have physically. You can see it in all the TN based screens of today, where they use dithering to get "8-bit".

To get higher bit depth then 8-bit, you need Vista or another OS that supports higher then 8-bit.

This is bigger then getting some extra AA, especially if to have Blueray on the computer.

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I've posted a bit around trying to figure out how well this is implemented, but it doesn't seem like its supported yet in the drivers. Have anyone sucessfully seen this in action?

They are also supposed to support colorspace conversion and more. Neither of this I've seen any evidence of support in on any reviews or any forum. Does anyone have a clue?

I'm guessing that most reviews have focussed more on gaming, and possibly CPU usage and image quality in HD video, rather than 'false' 10-bit colour.

I'd love to see it in action, if only to see if I can tell the difference or not.

I'm guessing that most reviews have focussed more on gaming, and possibly CPU usage and image quality in HD video, rather than 'false' 10-bit colour.

I'd love to see it in action, if only to see if I can tell the difference or not.

I'd love to see it too. Considering the improvements done in dithering on TN panels, which also use spatial and temporal dithering, it will be interesting to see when its done by a high powered GPU. If implemented correctly, it could give us richer colors.

Problem is that it might require the material to be in a higher bitdepth. If so, only HD movies like Blueray would benifit from it which has a higher bitdepth support.

Its new at least and thats always fun! :D

All I know on this front Tamlin is Samsung was showing off some time ago a prototype of a 30" 10 bit display capable of 1 bill colors at 10.8Gbps using DisplayPort that was supposed to release Q2 '08 and it hasn't yet as far as I know.

Then again some are wording it [i]"Mass production of Samsung’s 30â€

i dont think we will get true colours with good response time until oled. can you imagine the extra work the processing would have to do to add all those real colours into the equation. especially at 2560x1600

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Response on this one is supposed to be 6ms...
http://gizmodo.com/gadgets/new-lcd/samsung-the-first-to-develop-displayport-lcd-panel-282144.php
...then again it's a S-PVA, not S-IPS. Keep in mind with the super fast data rate DisplayPort has there won't be any bottleneck there and the panel's inherent color depth is 10 bit.

As far as OLED goes, yeah they look good but the lifespan is terribly low and the ones Sony's releasing are extremely over-priced, esp considering the manufacturing cost is low using an ink jet process. I'm hoping LG Philips will come out with a PLED, which is longer lasting technology with the same image quality.