Jan 31, 2026, 3:19:03 PM
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Sweet Home 3D Forum » List all forums » » Forum: Wishlist » » » Thread: VR mode for your 3d home » » » » Post: Re: VR mode for your 3d home |
Print at Jan 31, 2026, 3:19:03 PM |
| Posted by Jonnie63 at Aug 1, 2019, 1:21:40 PM |
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Re: VR mode for your 3d home I am updating my position on this after literally hundreds of hours now working on my project ( a real self build ) in SweetHome3d. I believe that anyone who has a powerful computer to do rendering can have a really good 3D VR experience without any new functionality - all you need is the type of VR goggles that can take a smart phone and a smart phone that has good graphics and the necessary orientation sensors. Here is the argument. The whole point about VR and design is that for any kind of aesthetic appreciation it needs to be realistic. If you want live VR then you will need say 25 frames per second per eye if you want true stereoscopic. What kind of quality in realistic rendering can we expect when we need 50 frames rendered in high resolution per second? Lets take a different path? Why not use panorama tour technology (which does work with VR goggles) and pre-render each scene at high resolution with real tracing so that sunlight actually looks realistic and so on? What is it that you give up? I would argue that the only thing you give up is that you have to pre-render every scene, you can view the room as if you were standing at A and you can view the room as if you were standing at B but unless you rendered a scene as if you were standing at C then you cannot see the room from C until you render a new scene and add it to your tour. So what we lose is the ability to just go anywhere when we feel like it - we can only view from predefined points that we chose. Ok so what do you gain? Well the answer is sheer visual quality. I have a reasonably fast 8 core laptop - for each scene in my tour it usually takes ten hours to render, I am rendering at pretty much full quality and my output image is 5000 pixels by 2500 pixels with many light sources including the sun and high resolution textures. So we are comparing a render that takes my machine ten hours against a render that would take 1/25th of a second - guess which one will look best? Personally I think we will need to see huge leaps in hardware speed before a live VR experience with real time rendering will equal a pre-rendered tour. Yesterday I added yet another scene to my tour, in this case I wanted to view the living room from when I sit down in a particular chair. I want to make fine judgement calls about how things look and whether they need improving - I really need to feel that I am there. When I put on my 20 euro VR goggles, insert my good quality (graphics) smart phone, carefully calibrate everything then I really feel I am almost sitting in that chair. The textures for the fabric of the chair are very high resolution and you can tell what kind of weave and fabric material it is, it really does feel almost real. To get that kind of quality from my current machine using real time rendering I would need it to be 25 x 60 x 60 x 10 times as fast which is nearly one million times as fast !!! The downside of course is that I have to update the script for the tour every time I add a new scene, I have to add hotspots, process images and so on - in a real time set up I would just move myself to a new position and expect the software and hardware to instantaneously give me the new view. But for a project that you are willing to commit a lot of time then the investment in time rendering and updating your panorama tour might really be worth it. To get started all you need is the advanced rendering plugin to create spherical images and a good panorama tour maker that includes a WEB VR option which simply means you view your creation on a webpage that operates a split screen ( left eye right eye ) and simulates parallax or in true stereoscopic mode actually gives you real parallax. See these examples (with your goggles on or just a tablet if you dont care for full immersion ) for the same with photos instead of renderings... https://krpano.com/krpanocloud/webvr/ |
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