Pimax 8K render tip

[blitze]

Getting great clarity with the Pimax 8K by doing the following.

 

Pitools quality / render set to 2

SteamVR Video Application Resolution set SteamVR managed (not manual over ride).

SteamVR Applications - Application Resolution Adjustment - Setting the slider to as close to 2160 as possible (being the vertical resolution pixel count as the horizontal will change pending on the FOV setting you choose in PiTools with Large giving 4K resolution on the horizontal if the vertical is set to 2160).

 

This setting was given in the Pimax Forum and it seems to deliver a very clear crisp image for the 8K.  Not sure how it works on the 5K.

Setting the Vertical res to 2160 and not above in SteamVR will have the GPU not over taxed with SS and I am finding decent frame rates the same as I had before but with much better image.

 

In game AA is set to x4

 

Enjoy. ?

[Guest deleted@134347]

1 hour ago, blitze said:

In game AA is set to x4

 

Enjoy. ?

 

I have set mine set at x2 as I can't seem to notice any discernible difference between x2 and x4 in my VivePro.  Do you see the different in Pimax for this setting?

[blitze]

Hi,

 

At the moment I am still testing settings.  Previously with my render settings I had PiTools at 1, Steam Video Render at 100% and and Il2 App render setting at between 40 to 60%

 

With these settings I found ingame AA at x4 with Nvidia enhance AA setting at x8 to give a reasonable outcome, until I started to try PiTool Render setting at 2 and Steam VR trying to match vertical resolution of the 8K testing either native resolution of vertical 2160 or the upscaler resolution input of 1440

 

Now I am testing SS with it being a multiple of those 2 resolutions so 2880 or 4320 but I have been busy as of late.

 

Upping SS as a factor of x2 of the initial resolutions, should I hope bring clarity to the image without artifacts.  I find on Winter Maps with SteamVR render set to 2160 that there is quite a bit of aliased noise on the scenery.  I am not sure what's behind it.  Hense the testing.  On non winter maps, that setting is quite a bit nicer than previously which seemed blurred.  Also, now trying SteamVR Video Render at over ride of 20%, to keep it constant and not have Steam trying to make the render a moving target in game in the pursuit of higher frame rates.

 

I will test different (lower) AA levels as I go higher on x2 factors of SS

[blitze]

Testing seems to lead me to think ingame AA is important.

 

At near native resolution, 2160 there is shimmering on landscape at certain angles.  Image is very clear and flying over Stalingrad is a blast but the shimmering sucks.  On Winter maps it is more prominent, not sure if this is a Balance Visual setting issue, a mini DP to DP converter issue as they seem not to be DP 1.4 capable or something else.

 

Staying at native resolution, using transparency AA either multisample or SS x2 + in Nvidia control panel clears up the shimmering but at cost of clarity of landscape.

 

Tried upping SteamVR App Render settings to 2x SS render of native resoltuion and also the 8K pre upscaled resolution so 2880 and 4320 respectively but my system didn't cope well.  The 2880 looked fairly good though but still some landscape shimmering.  Just not as noticeable.

 

Will have soon my eGPU with RTX 2080 to test things with.  Hopefully I can up the render resolution and maintain a reasonable frame rate.

 

For now it is PITool render at 2, SteamVR Video on Auto, SteamVR App Render on 2160 with ingame AA at x4 on Balanced with high shadows and clouds, terrain at 100km and detail at 4x, HRD, Sharpen and SSOA on.

[blitze]

Got it,

PiTool 1.75

SteamVR Video Render under Video 20%

SteamVR App Render 50%

 

This gives me a res of 2453 x 2160 on Normal FOV - Pimax 8K

 

In game AA x4

[chiliwili69]

11 hours ago, blitze said:

Got it,

PiTool 1.75

SteamVR Video Render under Video 20%

SteamVR App Render 50%

 

Hey, you can put whatever number you want in this three sections, but the net result is the same for the same number of pixels.

 

Defining variables as:

RQ is Render Quality in Pitool

SSA is SteamVR App Supersampling (in %)

SSV is SteamVR Video Supersampling (in %)

 

The total multiplying factor is : RQxRQxSSA/100xSSV/100

 

So 1.75x1.75x20/100x50/100 is about 30% SS.  I mean it is equivalent to use RQ=1, SSA=100% (default), SSV=30%

 

Touching RQ or SSV (or SSA) gives graphically exactly the same results: I demonstrated that here

 

The pixel count for the Pimax5K are shown in the "SS per device" tab in the online sheet.

[blitze]

I have tried RQ 1 SSV 100% and SSA 30% and I can assure you on the 8K it is not the same as RQ 1.75 SSV 20% and SSA 50%

 

Neither in the render res output listed by SteamVR or ingame image quality in Il2

 

The former is a blurry and alaised pixelated mess that looks like vomit

 

The later is a crisp well defined image

 

My premise is it is better to run your HMD at native resolution or a factor of it by 2?

[chiliwili69]

8 hours ago, blitze said:

I have tried RQ 1 SSV 100% and SSA 30%

 

I never used SSA to touch SteamVR SS. I always used SSV.  Try to use RQ=1, SSA not touched, SSV=30%.

 

Perhaps the Pimax8K works differently from Pimax5K+

[blitze]

Maybe, it has been a process to get the 8K dialed.  SteamVR and its % slider Render system doesn't help.?