FarCry 1.3 - OpenEXR HDR, 3dc, SM3.0 by default, more! - Page 5

circuitbreaker8 · 10-20-04, 06:08 PM

Very nice, I havnt tried this game on my 6800 GT yet...

Nv40 · 10-21-04, 12:27 AM

Quote:

Originally Posted by Subtestube

The X800 *can* do frame buffer blending.. least, that's what I thought. As I understand it, it's just that the accumulation buffer (for blending) on the ATi cards doesn't have high enough precision for true OpenEXR HDR. At least, that's the way I understand it... but on that, I could be wrong, and would be happy to be corrected. I'm really not as knowledgeable about the R420 as I should be.

Edit: Apologies, it seems you're right. Looked it up, and the 420 can do true OpenEXR HDR... but it has to use pixel shaders to do so. I'm still fairly certain it can do a reduced qual version natively though.
http://www.3dcenter.de/artikel/r420_...k/index4_e.php

according with a huge thread in B3d about FPblending feature in the Nv40 , ATI employees already confirmed that the is NO blending support neither with FP precision,neither with INT precision in ATi hardware. in other words if you are a developer a wants true-HDR in a game ,with ATI hardware then you are out of luck. everything needs to be emulated with pixel shaders through a process that everyone agreeds that is .. very very slow , with lower quality and painfull in the ass to emulate it. which is why the major feature in HL2 is now dropped by Valve because emulating it is not good enough for what they wanted.. Futuremark interview in B3d goes even more saying ATi can't do HDR.. which means -> HighDynamicRange . just because lights in a demo looks overbrighten doesn means its HDR. . just read their interview. lower quality emulation of "Hdr" .. is the only thing you have seen until now in PS2.0x cards demos. Timbury and FArcry are the first aplications to support true HDR in realtime.so take anything that you read from reviews with grain of salt. There are many game developers including Crytek/Futuremark and even Valve with comments already about this. the same things goes for true DIsplacement mapping and hardware Shadow maps.. not supported by ATI.

Nv40 · 10-21-04, 12:39 AM

Quote:

Originally Posted by jbirney

Your confusing things. This version of HDR != PS3.0. OpenEXR HDR is not the only form of HDR out there....

read again my post.. notice the Sm3.0+ sign.

not that the version exist .. but to show that the NV40 support more things beyond what SM3.0 can do. OpenEXR is not the only one in the industry.. there are others standars.. which ATI also dont support. and rumors says it will in the R520.

Subtestube · 10-21-04, 12:40 AM

Cheers NV40... that clears things up nicely.

superklye · 10-21-04, 12:44 AM

Quote:

Originally Posted by circuitbreaker8

Very nice, I havnt tried this game on my 6800 GT yet...

Well, you should. It's amazing.

pat777 · 10-21-04, 01:41 AM

http://forums.ubi.com/eve/ubb.x?a=tp...232#8291000232

Quote:

Originally Posted by Ruined

BTW, Crytek made an error in that article, they meant to say "FP16 blending" not "Fp32 blending"

Ruined, are you sure that FP32 blending was a mistake? It sounds like he meant it in that article to me.

noko · 10-21-04, 10:11 AM

Look forward to it. Played FarCry once on my Radeon 9700 Pro, should be much more fun on my GT when this patch comes out

.

Morrow · 10-21-04, 11:39 AM

Quote:

Originally Posted by pat777

http://forums.ubi.com/eve/ubb.x?a=tp...232#8291000232

Ruined, are you sure that FP32 blending was a mistake? It sounds like he meant it in that article to me.

FP32 blending is a mistake. The nv40 chip has only FP16 framebuffers so it can only perform FP16 blending. This has nothing to do with the highest precision at which pixelshaders can be rendered on >= nv3x hardware which is FP32.

Intel17 · 10-21-04, 03:21 PM

Fp32 blending would be outrageously expensive, and would BARELY run on todays 6800's.

Diamond_G · 10-22-04, 02:16 AM

but it sure would look pretty!!

DMA · 10-22-04, 04:53 AM

Quote:

Originally Posted by Geiger/Ubi

We have a policy of not launching patches on Fridays as well, so there is a very good chance that it won't be tomorrow, but I'll update again tomorrow.

Now there's a shocker. No patch this week either.

Morrow · 10-22-04, 05:24 AM

Quote:

Originally Posted by Diamond_G

but it sure would look pretty!!

The difference netween FP16 and FP32 blending would only be a difference of banding and the difference would only be hardly noticeable.

FP16 blending will remain the standard for a few years because as Intel17 said, FP32 blending in realtime would be pretty much an overkill.

10-20-04, 06:08 PM	#49
circuitbreaker8 Join Date: Sep 2004 Posts: 655	Re: FarCry 1.3 - OpenEXR HDR, 3dc, SM3.0 by default, more! Very nice, I havnt tried this game on my 6800 GT yet... __________________ ll Cooler Master Praetorian WTX Form ll OCZ PowerStream 520 ll AMD Athlon 64 3400 ClawHammer CG@2.55Ghz ll Zalman 7000Cu ll DFI LanParty UT nF3 250Gb ll OCZ EL Platinum 3200 rev2 3200 @ 255Mhz 2.5-3-3-7(2x512Mb) ll Gigabyte X800XT PE 256Mb GDDR3 VIVO@580/580 ll Arctic Silencer 4 ll SB Audigy 2 ZS ll Logitech Z-560 THX 4.1 ll NEC FE991Sb 19" CRT ll 14.9k in 3dmark03! :eek:

10-21-04, 12:40 AM	#52
Subtestube Anisymbolic Join Date: Aug 2004 Location: Wellington, New Zealand Posts: 1,365	Re: FarCry 1.3 - OpenEXR HDR, 3dc, SM3.0 by default, more! Cheers NV40... that clears things up nicely. __________________ Dr Possible: Core 2 Duo E6400 on Gigabyte GA-965P-DS4. Galaxy GeForce 7600GT. 2GB Corsair XMS 2 DDR2-6400 RAM (CL5). ATi Theatre 550 Pro. Windows XP MCE. All stored in Piano black Antec Sonata II, with a broken door. Mobile: ASUS M2400N, Pentium M 1.5 GHz. 512 MB DDR RAM. Intel EXTREME graphics. Windows XP SP 2 / Ubuntu 5.10. Ridiculous DOES not have an 'e' in it. It comes from "ridicule" and has less than nothing to do with the colour red.

10-21-04, 10:11 AM	#55
noko noko Join Date: Sep 2002 Location: Orlando Florida Posts: 735	Re: FarCry 1.3 - OpenEXR HDR, 3dc, SM3.0 by default, more! Look forward to it. Played FarCry once on my Radeon 9700 Pro, should be much more fun on my GT when this patch comes out .

10-21-04, 03:21 PM	#57
Intel17 Is not an Intel fanboi Join Date: May 2004 Location: Burlington, VT Posts: 1,368	Re: FarCry 1.3 - OpenEXR HDR, 3dc, SM3.0 by default, more! Fp32 blending would be outrageously expensive, and would BARELY run on todays 6800's.

10-22-04, 02:16 AM	#58
Diamond_G Registered User Join Date: Sep 2003 Location: Hi Posts: 239	Re: FarCry 1.3 - OpenEXR HDR, 3dc, SM3.0 by default, more! but it sure would look pretty!! __________________ Athlon X2 3800+ 1 Gig ddr400 ram 300+ Gig storage across multiple drives PNY Geforce 6800 (o/c 399/829)

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Error messages... HELP!!!!	Imperito	NVIDIA Linux	3	09-24-02 10:46 PM
Nvidia GF4 MX 440 + Mandrake	tomchristopher	NVIDIA Linux	3	08-18-02 09:42 AM
nVidia drivers + Red Hat Linux 7.3	Error404	NVIDIA Linux	17	08-16-02 11:34 AM