Hyper Z II not working on 9500 Non Pro ??

[Doomtrooper]

I ran Pcchens Z-rejection utility for Direct 3D and I'm showing little to no Z-rejection compared to my 8500.
Can somone with a 9700 test it also ?? The 9500 not having the bandwidth of a 9700 desperatley needs HSR.

Comparison:

8500

Mode selected: 1024x768 32 bpp with 32 bits texture
Use 16 bits Z buffer.
Texture size: 512x512
Back to front render time: 2.168216s
Front to back render time: 0.308449s
Back to front with texture render time: 5.198654s
Front to back with texture render time: 0.383800s

9500 NP

Mode selected: 1024x768 32 bpp with 32 bits texture
Use 16 bits Z buffer.
Texture size: 512x512
Back to front render time: 2.710744s
Front to back render time: 1.668576s
Back to front with texture render time: 4.448411s
Front to back with texture render time: 1.731958s

I can host the program for someone to test...run with with windows command prompt

[Doomtrooper]

Forget it:

What a second -- Just realized. Hierarchical Z is disabled on the 9500. So you guys are actually enabling it through a registry? You're not talking about having a broken feature, you're talking about enabling a feature which is not enabled by default and getting corruption. That's different.

Yes, hiZ is disabled on the 9500 non-pro, by design. Re-enabling it will cause visual artifacts or hangs. That's not something new; 9500 non-pros never had HiZ enabled.

So, yes, we know of this. It's not a problem, since it's not supposed to be enabled.



sireric

[RussSchultz]

Well, that's irritating. I was under the impression that my 9500 was a 9700 with 4 pipes.

Ah well. Its destined to sit in my media closet and drive my projector, so I'm not too concerned about hyper-z II anyways.

[Dave Baumann]

From Sirerics post it seems that only hierarchical z is disable, not HyperZ per se. The f-t-b / b-t-f tests would indicate the early z rejection from the full z buffer is still operational.

[Joe DeFuria]

Interesting.

I suspect this will be one other difference between the RV-350 and the 9500 non-pro.

Namely, that the RV-350 would have full HyperZ-II ability for its 4 pipes.

[Doomtrooper]

It appears PowerColor and Sapphire are unaware of it also, as I checked before I ordered and it stated HyperZ III is there :

http://www.sapphiretech.com/pressrelease/10-24-2002.pdf

[Tagrineth]

HyperZ as a whole is active, just not Hierarchal Z.

There's still fast Z-clear and early Z-check.

[Dave Baumann]

+ Z compression & colour compression.

[Doomtrooper]

Yes but there is no mention of Hi-z being removed which is good for 15-20%....the brochure needs to updated to avoid confusion.

[MuFu]

HyperZ as a whole is active, just not Hierarchal Z.

There's still fast Z-clear and early Z-check.

Sounds similar to RV250 in that respect.

So enabling it gives artifacts, eh? Interesting... might be worth suggesting to people that have tried the 9500-to-9700 mod and get artifacts that they disable Hi-Z.

:?: :?: :?:

MuFu.

[Dave Baumann]

The problems is, AFAIK, there is still no way it isolate the individual element of HZIII. I asked this prior to reviewing and it seems Dave Barron did prior to his last R300 investigation at FS. The flags in Rage3D tweak seem to do nothing either.

[MuFu]

Ah yes - a quick trip to Rage3D reveals an over-exuberant, fanboi-fuelled thread centered around this very idea. :)

I remember OGL guy mentioning that there was a good reason why many people were seeing their artifacts disappear when enabling FSAA. Although he didn't divulge what it was, could it be something to do with Hi-Z implemention when multisampling?

MuFu.

[OpenGL guy]

I remember OGL guy mentioning that there was a good reason why many people were seeing their artifacts disappear when enabling FSAA.
Actually, what I said what that I had some ideas, but no one ever responded to my question, so I guess I'll never know :D

[MuFu]

Hehe... I wish somebody with a melon-sized brain had pestered you to elaborate. I would do it myself, if only I could phrase it in a way that didn't make me look like a 2nd year EE student without a clue. :?

So anyway, wotcha thinkin'? :lol:

MuFu.

[Ante P]

I just asked some people to disable Heir. Z and it didn't remove their artifacts.

Did anyone else try it?

[kmolazz]

how did you disable it? the tweakers are said not to work..



and just another thing... not really related to the point here but,

i just tried the soft9700 mod yesterday and got artifacts even in windows. I had checkerboards in icons and buttons ( p.e. close window and quicklanch bar icons ). I corrected that by disabling hardware acceleration in windows by 2 notchs. What does this have to do with pipes or hyperZ? 3D remained with artifacts though, severe checkerboard in about half the screen. Any thoughs?