Homepage › Forums › General vorpX Discussion › Does VorpX support Half-Width SBS?
- This topic has 7 replies, 4 voices, and was last updated May 3, 2025 5:42pm by
realer.
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Jun 8, 2023 at 12:11pm #216483
Egon
ParticipantI just got glasses free tablet Lume Pad 2 and one of its upcoming features will be possibility to stream PC 3d content on the tablet.
I know VorpX now supports non-VR 3d content, but I wonder if it renders to the PC’s primary display as Half-Width SBS as this will be needed to work on Lume Pad 2.
Jun 8, 2023 at 6:56pm #216484Ralf
KeymasterYes, that’s the SBS mode vorpX handles.
The way vorpX does it is actually even a bit better than half width SBS normally would be since images are always rendered at full width first and then scaled down to half width when drawing the SBS image, resulting in a 2×1 supersampled image with more preserved detail compared to directly rendering at half width.
Jun 9, 2023 at 10:46am #216490Egon
ParticipantThis sounds wonderful. Thank you.
Feb 19, 2025 at 1:37pm #221164realer
ParticipantYes, that’s the SBS mode vorpX handles.
The way vorpX does it is actually even a bit better than half width SBS normally would be since images are always rendered at full width first and then scaled down to half width when drawing the SBS image, resulting in a 2×1 supersampled image with more preserved detail compared to directly rendering at half width.
So vorpX is actually rendering a full SBS image? Please let us choose to just display that image. Currently, rendering games in 1080p on a 1080p full SBS (3840×1080) monitor results in unreadable text. I need to go to at least 1440p for text to be readable which is very demanding and it sounds unecessary if the image is actually already rendered in full SBS and having to scale it back and forth is what destroys the image quality.
Mar 12, 2025 at 6:03pm #221220333hronos
ParticipantYes, that’s the SBS mode vorpX handles.
The way vorpX does it is actually even a bit better than half width SBS normally would be since images are always rendered at full width first and then scaled down to half width when drawing the SBS image, resulting in a 2×1 supersampled image with more preserved detail compared to directly rendering at half width.
So vorpX is actually rendering a full SBS image? Please let us choose to just display that image. Currently, rendering games in 1080p on a 1080p full SBS (3840×1080) monitor results in unreadable text. I need to go to at least 1440p for text to be readable which is very demanding and it sounds unecessary if the image is actually already rendered in full SBS and having to scale it back and forth is what destroys the image quality.
You can use SBS (2:1) + Stretch screen (aspect ratio option) = Normal 3D
May 2, 2025 at 6:27pm #221371realer
ParticipantYes, that’s the SBS mode vorpX handles.
The way vorpX does it is actually even a bit better than half width SBS normally would be since images are always rendered at full width first and then scaled down to half width when drawing the SBS image, resulting in a 2×1 supersampled image with more preserved detail compared to directly rendering at half width.
So vorpX is actually rendering a full SBS image? Please let us choose to just display that image. Currently, rendering games in 1080p on a 1080p full SBS (3840×1080) monitor results in unreadable text. I need to go to at least 1440p for text to be readable which is very demanding and it sounds unecessary if the image is actually already rendered in full SBS and having to scale it back and forth is what destroys the image quality.
You can use SBS (2:1) + Stretch screen (aspect ratio option) = Normal 3D
Not sure what you mean exactly. My device has a native resolution of 1920×1080 per eye, so the resolution for 3D SBS is 3840×1080. If I set game resolution to this the image gets squished. “Stretch screen (aspect ratio option)” Is this a vorpx setting, I can’t find it. Or is there some other software I can use specifically for the scaling?
Normally I just set the game resolution to 1920×1080 (or 2560×1440 etc) and then vorpx works fine but the image quality is very degraded when I do this, something is messed up with the scaling. Changing nvidia scaling from “GPU” to “Monitor” made it a little bit better but it’s still messed up. I don’t have this issue with geo-11 and full-sbs but in my experience it’s compatible with way fewer games so it only works for a few titles, but the point is I know it’s not supposed to look as degraded as it does and the only reason I can think of is that something is going wrong with the scaling
For example this is how half life 2 looks at 1080p, the text is all messed up. But it’s not just the text or hl2, everything looks way lower res in other games like crysis 3 as well. https://postimg.cc/HrGxjpM7
May 2, 2025 at 8:06pm #221372Ralf
KeymastervorpX renders both eyes at full size and then scales the result down horizontically. So under normal circumstaces you get half-res SBS images with 2×1 supersampling, i.e. considerably better than rendering directly at half width.
May 3, 2025 at 5:42pm #221373realer
ParticipantvorpX renders both eyes at full size and then scales the result down horizontically. So under normal circumstaces you get half-res SBS images with 2×1 supersampling, i.e. considerably better than rendering directly at half width.
Yeah, my guess is that the scaling gets all messed up because I’m using a device that only supports full SBS (xreal air) so I have to scale the image back and forth. The actual screen resolution is 3840×1080 (1920×1080 per eye), but if I set the game resolution to 3840×1080 the game gets squished, the aspect ratio is all wrong. So I have to set the game resolution to 1920×1080
So I set the game resolution to 1920×1080 -> Vorpx renders a full sbs 3840×1080 pixels (1920×1080 per eye) image -> Vorpx then scales this down to a 1920×1080 half-SBS image -> My nvidia graphics card scales it back up to a full SBS 3840×1080 image. I think. It’s confusing.
Maybe all this scaling back and forth is what results in the degraded image? I can’t think of any other reason why the image is so blurry. It’s been a while since I last used it, but if I remember correctly when I tried geo-11 I got a very blurry image as well before I got help on how to configure it for full-SBS. If you have the time, please consider adding an option to display the full-SBS image as it is first rendered. I understand using Vorpx for stereoscopic 3D is not the intended usage but other than this problem it works very well and is the easiest and most well supported way to get geometric 3D. Such an option could potentially make it work much better with AR glasses. Xreal, viture, rokid, rayneo, and maybe in a year or two some of the bigger players will launch their own products in this segment so it might be an untapped market. Even if it was just as an unsupported experimental feature it would be greatly appreciated.
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