Right Now Do any ATI cards support HDR??

[biff 24 2000]

Right Now Do any ATI cards support HDR?? like a X800 XT for example thanks.

 

[Ronin]

Nope.

 

[MegaWorks]

Yes

 

[Munky]

There's more than one way to do HDR. If done using pixel shaders, then any dx9 card can do HDR. Most games, however, use the FP color buffer do do HDR, and only the gf6 cards have it.

 

[MegaWorks]

Originally posted by: munky
There's more than one way to do HDR. If done using pixel shaders, then any dx9 card can do HDR. Most games, however, use the FP color buffer do do HDR, and only the gf6 cards have it.

I was referring to the pixel shader methode.

 

[biff 24 2000]

so if i was using a x800 xt i could run the hdr in the HL2 loast coast level. but could i use hdr in farcry?

 

[nRollo]

Originally posted by: biff 24 2000
so if i was using a x800 xt i could run the hdr in the HL2 loast coast level. but could i use hdr in farcry?

Nope.

 

[hans030390]

Yes, the 6/7 series just have a more advanced way of doing it. It probably kills performance more though, so i could care less about it.

 

[Drayvn]

Originally posted by: biff 24 2000
so if i was using a x800 xt i could run the hdr in the HL2 loast coast level. but could i use hdr in farcry?

Supposedly Valve have implemented an HDR version for the X800 and Radeon cards.

But the nVidia 6 and 7 series will have the more enhanced version.

 

[Munky]

Originally posted by: Drayvn

Originally posted by: biff 24 2000
so if i was using a x800 xt i could run the hdr in the HL2 loast coast level. but could i use hdr in farcry?

Supposedly Valve have implemented an HDR version for the X800 and Radeon cards.

But the nVidia 6 and 7 series will have the more enhanced version.

The question is will either of the two methods run at playable fps at high quality settings? If not, then there's no need to worry about HDR.

 

[Newfie]

Im really waiting for the comparsion between low quality and high quality HDR. Come on valve!

 

[xtknight]

Yes.

 

[ironique]

You can now also run HDR in Splinter Cell CT. They're released a patch that introduces an SM2.0 path for ATI cards, allowing ATI cards to render the HDR modes (i think ).

 

[Topweasel]

Originally posted by: hans030390
Yes, the 6/7 series just have a more advanced way of doing it. It probably kills performance more though, so i could care less about it.

Actually I thought the Nvidia way or HDR was suppost to b nearly free (no Loss of performance) while the X800 series because they are using the Pixel shader is going to cause a pretty substantial loss in performance.

 

[BFG10K]

Nope.

Sure they can, just not with FP blending.

 

[Munky]

Originally posted by: Topweasel

Originally posted by: hans030390
Yes, the 6/7 series just have a more advanced way of doing it. It probably kills performance more though, so i could care less about it.

Actually I thought the Nvidia way or HDR was suppost to b nearly free (no Loss of performance) while the X800 series because they are using the Pixel shader is going to cause a pretty substantial loss in performance.

Hahahah! That's what they want you to believe. Nothing is free, not even AA/AF on a 7800gtx. But HDR is more, it actually causes a huge hit in fps on any card, and you cant use AA with it on. Actually, though, in Chaos Theory the Ati run HDR faster using pixel shaders than NV cards using FP blending.

 

[Ronin]

Originally posted by: BFG10K

Nope.

Sure they can, just not with FP blending.

I suppose I should have clarified my answer. Proper HDR, no. Muddled, artificial HDR, yes.

 

[biff 24 2000]

Thanks for the help guys

 

[mcmikemc]

I have a 6800GT and would like to try HDR out in HL2. How do I turn it on?

 

[xtknight]

Originally posted by: mcmikemc
I have a 6800GT and would like to try HDR out in HL2. How do I turn it on?

Official HDR for HL2 ain't out yet. (There was some unofficial HDR mod that was claimed to be a virus.)

 

[baddog121390]

download the HDR mod or wait for lost coast to be released

 

[reever]

Originally posted by: Ronin

Originally posted by: BFG10K

Nope.

Sure they can, just not with FP blending.

I suppose I should have clarified my answer. Proper HDR, no. Muddled, artificial HDR, yes.

Define "proper" HDR

 

[Drayvn]

Originally posted by: reever

Originally posted by: Ronin

Originally posted by: BFG10K

Nope.

Sure they can, just not with FP blending.

I suppose I should have clarified my answer. Proper HDR, no. Muddled, artificial HDR, yes.

Define "proper" HDR

Yea tell us how proper HDR is done?

Its like saying thats a proper graphics engine because its DirectX

If im right HDR is done in the pipelines while the Tone Mapping is what makes HDR possible and thats done with the FP buffer. HDR has a massive range of lighting, Tone mapping is what condenses that lighting range into what a monitor can produce.

 

[Ronin]

To quote munky:

Most games, however, use the FP color buffer to do HDR, and only the gf6/7 cards have it.

Creating a way for a card to render via Pixel Shaders is a makeshift solution for something that wasn't really there before.

 

[Wreckage]

HDR can be done on most any card however the performance hit can make it unplayable. The Geforce 6 & 7 series cards include a 16bit floating point frame buffer, which allows for hardware acceleration of HDR. Using FP16 HDR games such as Far Cry, SC, etc. can have HDR enabled and still have a reasonable frame rate to play the game. It is rumored that the next ATI chip will include support for FP16 HDR.

FP16 HDR (such as OpenEXR) is the preferred method because of the specific hardware acceleration that can be used without having to use the pixel shader rendering (which is busy doing other aspects of the game).