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HDR - Some clarification please!

Discussion in 'Graphics Cards' started by p4radox, 13 Jan 2006.

  1. p4radox

    Capodecina

    Joined: 1 Oct 2004

    Posts: 10,767

    Location: Prague

    I've recently become the proud owner of an X850XT. I know this card has massive raw power which is why I chose it over the 6800GS (after reading all the threads on the subject;)). And I also understand it has HDR support (which from what I can gather is part of SM2 support or floating point operations or some such jargon), but does not have SM3 support, which most people say makes no difference anyway.

    So I've got Far Cry, but can't seem to enable HDR. I think I've worked out that to enable HDR on Far Cry, your card must support SM3 also. Why is this? I thought SM3 made no difference according to most people, but looking at Far Cry HDR screenshots, it looks amazing! Are there any games that can utilise HDR without SM3?

    thanks :)
     
  2. vanandjuanunited

    Soldato

    Joined: 20 Oct 2005

    Posts: 5,646

    Last edited: 13 Jan 2006
  3. Goksly

    Capodecina

    Joined: 5 Mar 2003

    Posts: 10,626

    Location: Nottingham

    HL2 for sure... thats Dod:source, HL2: Lost Coast and some maps on CS:source
     
  4. FrankJH

    Capodecina

    Joined: 6 Jun 2005

    Posts: 22,506

    I may well be wrong in this but I thought HDR was only part of SM3 and therefore only available ont eh most recent X1*** series of ATI cards?

    I thougth the X8 series wasnt capable iof HDR etc, from when these cards first came out ages ago ( or am I thinking of another ATI card with similar name?)
     
  5. Phil99

    Capodecina

    Joined: 29 Oct 2004

    Posts: 10,900

    It depends on how the game is written as to if your card will run it.

    FarCry + X800 = no HDR
    HL2/CSS/DOD:S + X800= HDR
    Splinter Cell Chaos Theory + X800 = HDR
    Pacific Fighters + X800 = no HDR

    All the above will run in full HDR with any 6 or 7 series nVidia card (though incredibly slowly on some...)
     
  6. Boogle

    Mobster

    Joined: 17 Oct 2002

    Posts: 4,505

    Location: GREAT Britain

    Far Cry's HDR, as well as some other HDR implementations follow ILM's method which requires floating point blending. The X800 doesn't support that - therefore can't run HDR in all games.

    The X1x00/6x00/7x00 series all support floating point blending meaning they support HDR in all games.

    The method used in Far Cry is the 'proper' way of doing HDR, and is more accurate. However, since realtime graphics is all about approximation you'd be hard pressed to tell the difference between Far Cry's and HL's HDR implementation - and there's no reason to say HL2's HDR isn't 'real' HDR.

    However, HL2's HDR runs faster if your graphics card supports SM3.
     
  7. p4radox

    Capodecina

    Joined: 1 Oct 2004

    Posts: 10,767

    Location: Prague

    That's clarified things a little, thanks guys. It's a shame really, I was looking forward to a bit of HDR action in Far Cry! :p I'll have to invest in HL2 then I spose *grumbles*... ;)
     
  8. Celt_Belfast

    Associate

    Joined: 31 Dec 2005

    Posts: 11

    Hmmm on the question of HDR - I saw comments that some (all?) of nVidia cards whilst supporting HDR, didn't allow you to use anti-aliasing or something similar at the same time. Anyone know what the deal is exactly, and what cards it may or may not apply to?
     
  9. Phil99

    Capodecina

    Joined: 29 Oct 2004

    Posts: 10,900

    I don't think they can use AA if the game uses floating point blending (e.g. FarCry), though the X1800 can cope with this perfectly well.

    This applies to both the 6 and 7 series cards.
     
  10. TNA

    Capodecina

    Joined: 13 Mar 2008

    Posts: 18,515

    Location: London


    No mate. 4K HDR TV + Titan XP + Resident Evil 7 = HDR

    Pfft, this guy... :p
     
  11. Yaayuh!

    Capodecina

    Joined: 5 Nov 2010

    Posts: 21,122

    Wow, that's quite some thread revival...
     
  12. Gregster

    Caporegime

    Joined: 24 Sep 2008

    Posts: 38,293

    Location: Essex innit!

    Why? lol
     
  13. Phil87

    Gangster

    Joined: 1 Jan 2012

    Posts: 260

    I was hoping this would be a thread about this decade's version of HDR - it's confusing that they called it the same thing as the "old HDR" and it has a similar purpose. Will we get HDR version 3 in another 10 years?
     
  14. VincentHanna

    Capodecina

    Joined: 30 Jul 2013

    Posts: 22,883

    Well it's a similar principal, but the old HDR from Half-Life 2, Far Cry etc were artificial which just used extreme brightness to create the illusion you were stepping from dark to bright areas, as if the players eyes are adjusting to the sunlight.

    They should have called it HDDR.

    Now the screens are actually doing the highlights on specific areas of the screen.
     
  15. subbytna

    Sgarrista

    Joined: 22 Oct 2008

    Posts: 9,991

    Location: Belfast

    Over 10 year thread bump.....BANHAMMER INCOMING!!!!
     
  16. TNA

    Capodecina

    Joined: 13 Mar 2008

    Posts: 18,515

    Location: London

    Haha, chill guys. Got to admit it was funny. Plus it is at least interesting to see them talk about HDR all those years ago :D
     
  17. eddyr

    Wise Guy

    Joined: 27 Aug 2008

    Posts: 1,682

    Location: London

    A part of me hopes you were waiting patiently for a decade to post that!
     
  18. TNA

    Capodecina

    Joined: 13 Mar 2008

    Posts: 18,515

    Location: London

    Lol. I have not even been a member for that long, though I have been using that website since 2002/3 :p
     
  19. no_1_dave

    Soldato

    Joined: 7 Jul 2004

    Posts: 6,892

    Location: Gloucestershire

    I remember all the HDR discussions back in the day.
    IIRC the 6800 series was faster, especially the 6800 GT. The OP should have gone for that instead of the X850. :cool:
     
  20. straxusii

    Mobster

    Joined: 18 May 2003

    Posts: 4,883

    [​IMG]