Yes. GTX 1070 is DP 1.4(3 ports)
“Hmmm… An interesting idea on reducing gpu stress would be to have the
option of choosing base refresh for Brainwarp & might be the idea
of it.”
In fact, this is how I understood brainwarp technology would work from the beginning.
But the pimaxvr post gave me to understand that it would be different.
You definitely have some cool examples.
But i think i might be able to use a real world example of sorts.
TVs with 120hz - 240hz True Motion creates xtra duplicate frames from 60hz so it shows each frame 2 to 4 times. The Psvr takes 60hz & doubles to 120.
The trick to brainwarp it does a kind of frame doubler but uses your brain to create a duplicate frame for the eye that sees a blank.
So
Left Eye sees pic. Brain interpolates the right eye image (the brain knows both eyes are open & should see the samething)
Now the right is offset to display the right eye half timing mark before the left eye receives a new frame.
So using a very basic idea
Even if your moving the actual movement at high frames is minimal.
This how TVs can produce a nice moving picture at 60hz input. This is also why a computer display costs more since its refresh rate is natively supported.
I hear you. It’s neat for sure if we’re on the right track as it truthfully in a sense kind of reduces gpu load for lower base refresh & allows you to increase frames without increasing gpu load at full effect.
This is I’d say is a case of trying to explain an idea in a language that’s not native preference.
Afaik a TV does motion interpolation by looking at the last and the next frame and computing a matching in-between image (essentially adding a delay of at least 1 frame - which doesn’t hurt for movies).
But perhaps you are on the right track with this comparison and brainwarp is just another name for Oculus spacewarp? (Instead of delaying for one frame they (as far as I understood) predict the head position of the next frame based on the velocity from previous frames and then interpolate between the last and the hypothetical next frame every other frame instead of really rendering it).
All these marketing terms…
It could be though PiMax did say they have some version.
Though from reading up on an article that @VRGIMP27 posted about a project Nvidia was trying out to reduce latency “Cascaded Displays” is probably closer.
The basics in Nvidia Cascaded Display involved overlaying 2 lcd panels on top of each other with off setting pixel layout (maybe 1 panel upsidedown) then offsetting timing like brainwarp resulting in lower latency & sharper image.
Brainwarp is similar in the idea of overlapping but uses you brain. An interesting idea but likely too hard to balance right would be to see if you could merge the 2 ideas with frame doublers(or internal cloned displays with delay).
In theory combining the 2 concepts could give even more sharper picture & give a a base display rate of 120hz - 180hz with native input of 60hz to 90hz. If brainwarp can be worked in then you now have an insane possibility of 240hz - 360hz perceived!
Now core drawback probably need brighter backlight to compensate 2 lcd panels stacked. In theory probably double. 2ndary alot more expense. 3rd of course how much would Nvidia want to use their concept?
“possibly achieve” - This is something I’d like to know. How does all these v2/3/< run in optimal conditions?
Of course it’s important to know how it handles on a 980 with DP 1.2 and so on, but how does the prototypes run when cables, ports and graphic cards are NOT bottlenecking?
Have your “lab” tested a prototype through 1080 ti with DP 1.4?
Have you reached 90hz? And what about that brainwarp? Supersampling?
I mean IF you can’t even manage to get it to work in optimal conditions then I think it’s important you share your progress.
I’m sitting on a high-end PC thinking “I’m safe.”. But am I?
There are a bunch of sim nerds here that for sure wants some answers. We’re Eager to play Elite Dangerous supersampled through the roof with the Pimax as the cherry on the top.
@PimaxVR
Thanks for the response but I think your team should make a video to show that the DP version is capable to do more than 75Hz before KS ends. Maybe filming the refresh rate monitoring page in steamVR setting along side with the DP version HMD.
The v2 was performing up to 90hz withbdual hdmi as said. The v3 is having some problems due to switching to dp which current stable up to 82
watch this video from the minute 38.10:
They talk seriously about the Pimax 8K.
Regarding this review:
@ evertec: To play with Elite Dangerous and Project Cars 2, just use the keyboard and the mouse. The fact that you try these games without taking off from a station and performing some 360 degree loops with your ship does not give you the chance to evaluate the actual performances of the Pimax HMD.
I’m worried about some things:
My major concern is that they are using some panels which are not rated for 4K @ 90Hz (and low persistance) and it does not work. Then they blame the manufacturer for it.
They do not want to disclose subpixel arrangement either. I guess someone will have to challenge them on that again to have them finally admit it. It is no longer the question about technical solutions and their viability but about the integrity of the company who has to be pushed and challenged to admit the truth.
Read up please. Clpl are low persistance. Valve even added low persistance lcd support to hmd dev kit.
Where is your source that tge panels don’t support 90hz? The v2 was operating up 2 90hz with 2 hdmi.
Desktop PC are mire difficult to transport all over the world. Its not like a local roadshow
I am not arguing about Valve’s support or their recent announcement related to CLPC LCD.
Pimax themselves wrote after the lower FPS has been reported by reviewers this:
I highlighted the parts related to previous (HDMI) solution and the new (DP) one. They admit that it was not stable at 90 Hz on HDMI and it got worse on DP. At least this is the way I read it.
I can understand you can have unstable system when you push all the parts to the limits and eventually mitigate it, but it requires first know-how, second the corresponding resources and components.
The way they admit the failures suggests they do not have not much expertise on HDMI vs DP implementation - because they were evidently surprised when they switched from one to the other.
Anyway, my comment was about the panels and my concern. I would be happy if @PimaxVR makes me corrected, but so far their silence about the panels (and subpixel arrangement) only confirm my worries.
@PimaxVR can you identify which panels do you use in 8K?
@PimaxVR can you describe which subpixel arrangement these panel use?
Based on VR Kommando’s review (and the images of pixels he showed,) I would assume its either RGBW (1/3 less than a full RGB stripe,) or its pentile
Can you confirm @bacon @Matthew.Xu
If you think a higher res can compensate for frame drops, diknwhat to tell you that’s totally insane. As someone who’s played vr for hrs everyday for almost two years, that is insane.
@PimaxVR, @Matthew.Xu, @deletedpimaxrep1,
This is just a suggestion but it might be worth looking at: Why not use a DP1.4 per screen like the original prototype used an hdmi for each panel? I realize this might be unpopular but if it is a solution to the 90 HZ issue then I say a 2 cable solution is better than no solution. Besides you will be using two cables in the 8k X product anyway.
Thanks for your advices, from my opinion,the one DP1.4 should also work to 90Hz, so our engineer is working hardly to see the possibility, we believe it should work. of cause, we will review the every week even every day to see whether need to change the solutions, your advice maybe is a good choice, please give us a little more time.
@bacon I agree with @jimh54 on this. If you are struggling to hit franerate dual DP would make sense.
All the GPUs relevant to this HMD will have more than 1 displayport connector, so it would save your engineers time.
If you are commited to 75hz/90hz, I suggest adding a 60hz mode so that everyone who gets an HMD will be assured a working baseline.
I wouldn’t want to use two of my GPU ports, or have an increase cables or weight of cables to the HMD.
I m for dual DP, it will add the possibility to use the native resolution later.
Can you comment on RGB stripe, please? VRGIMP27 and others have asked that question. It shouldn’t be a secret.