Disabling HDR in build 1080?

W

wittsend

Registered
Hi there.
I hadn't played rFactor 2 in a few weeks and I turn my PC on to find an update.
In the update, the option to disable HDR has been removed, with the change log stating that HDR is now on by default, and some rather vague instructions on how to disable it.
Now, my hardware is pretty dated now (In fact I built this rig back in late 2012 to exceed the recommended requirements of the rFactor 2 beta (not that it mattered, I've never been able to run rFactor 2 at full settings +multiview smoothly, but that's another story.)) So I try and claw back frames where I can. One of the ways is to disable to HDR. This allows me to get around 60fps on most tracks.
After (I think) I followed the instructions in the change log, I'm lucky to get 50fps on tracks that I could get 60fps on before. What's the story?
Can I get a straight forward procedure on how to disable HDR please? Thanks.
 
Ok, open "Config.ini" in "*your rF2 data folder*\UserData\" folder.
Change the line: "GFXSafeMode=0 // 1=fallback to LDR mode, you must manually clear shader cache" to "GFXSafeMode=1 // 1=fallback to LDR mode, you must manually clear shader cache"
As the comment line says, you have to clear the shader cache. So delete all files in "*your rF2 data folder*\UserData\Log\Shaders".
 
wittsend said:
(...)Now, my hardware is pretty dated now (In fact I built this rig back in late 2012 to exceed the recommended requirements of the rFactor 2 beta (not that it mattered, I've never been able to run rFactor 2 at full settings +multiview smoothly, but that's another story.))
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Recommended requirements are for a single monitor setup (in my opinion, it should be quite obvious). Multi-monitor setups require much more powerful graphics card. Roughly, 3 times more (especially with MultiView on) vs single screen setup.
 
Multi-monitor setups require much more powerful graphics card. Roughly, 3 times more (especially with MultiView on) vs single screen setup.
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Yeah that's what I thought too hence why I built the system to exceed the recommended requirements, but after playing Some of the latest builds of Assetto Corsa, I find the graphics look better (despite not even running at full settings), and I'm getting a fairly solid 60fps all while using their equivalent of multi-view to fix outer screen distortion. There is no change in performance when 'multi-view' is turned on or off in that game either, so why the big hit in rFactor 2? In addition, there's the performance drop when switching from windowed to full screen mode, but why? Feels to me like rFactor 2 isn't as polished in the graphics department as it could be. I like rfactor and have played rFactor 1 and 2 for years, I just wish it was a little better in that respect! Although they're a little old, my graphics cards are still nothing to poke a stick at, (2x 680GTXs in SLI).
 
rF2 has a more raw-ish look than other titles. Which is better? Let's leave that up to a personal taste :)
SLI doesn't work well in rF2 with Multiview and HDR enabled. I didn't do any tests recently though. Maybe something has changed... anyway, it's better to go with a single card. Having a single 780 Ti definatelly will be better... and also probably cheaper.
 
Hmm, it would be nice if SLI and multiview worked as well in rFactor 2 as they do in Assetto Corsa. Admittedly, Asssetto corsa ran poorly on my system when it was still in beta, even with just a single monitor, but it has DRASTICALLY improved over the last year or so in terms of performance. It was a progression that I expected to see from rFactor 2 as well when the beta came out, but beta turned into final, and still I'm having to apply all these band-aids like running windowed mode and disabling HDR to get a reasonable frame rate from it. SLI has been around for 10 years now, so I'd have thought that someone would've worked out how to work the DirectX APIs by now. I really do like rFactor, but this is definitely where it lacks.
 
If you are using default RF2 SLI bits in nvidia inspector, the performance of RF2 is even worse than using only 1 gpu. There is a thread about SLI here on forum, I can't link it now, but long story short, use SLI bits for Lego Batman game instead of default one, it will improve performance a lot.
 
Just my few cents to this HDR/non-HDR debate.
Because Im on an old PC (i7-920/HD7950 oc) I was running with no HDR in build 1052.
But because the HDR is default in build 1080 I was positively surprised when I checked how slight fsp advantage is by disabling HDR now.
On Toban Short I guess its less than 10 fps. But I will make a benchmark when I get time.
 
Jaromir Bergmann said:
I need to run some tracks in non-HDR mode too + I do not like the new build1080 shadows http://s31.postimg.org/9zoi8yue3/aaaaaaaaaa.jpg how do I downgrade to previous build pls? thanks
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There are no new shadows in build 1080 as far as I can tell. Downgrading a build is not a good idea in long run because new ISI content is meant to be run with latest build, so when ISI releases the next car you might be forced to upgrade anyway to get the proper experience.
 
stonec said:
There are no new shadows in build 1080 as far as I can tell. Downgrading a build is not a good idea in long run because new ISI content is meant to be run with latest build, so when ISI releases the next car you might be forced to upgrade anyway to get the proper experience.
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There are some changes to shadow system in this build. Optimization and other tweaks.
 
Ronnie said:
"Improved particle lighting/shadowing." - What I understand from this is that some work on lighting AND the way the shadows are being casted/created. Correct me if I'm reading into this wrong.
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The keyword here is 'particle', like smoke, skidmarks and fire.
 
Luc Van Camp said:
The keyword here is 'particle', like smoke, skidmarks and fire.
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Not intending to hijack the thread, but regarding shadows please ISI have a look at Interlagos where some trees project shadows on a very steep terrain (Laranjinha curve), the shadows are absolutely crazy there, spining and flickering everywhere, I'm sure it was not happening in previous build.

To disable HDR in 1080 building please edit SETUP.INI and address the following variable:

UseHDR=(1)
 
If you are using default RF2 SLI bits in nvidia inspector, the performance of RF2 is even worse than using only 1 gpu. There is a thread about SLI here on forum, I can't link it now, but long story short, use SLI bits for Lego Batman game instead of default one, it will improve performance a lot.
Click to expand...

Thanks for that Prodigy, I found the post and gave it a go. I've been running with HDR and soft particles turned back on since changing the SLI bits to what is suggested. Getting 60fps on most tracks now (except in pits but that seems to be typical). The link to it is below for anyone else that is interested:

http://isiforums.net/f/showthread.php/13570-Nvidia-SLI-Possible-big-framerate-improvement
 
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