If you have heard about Koola and his architectural visualisation video using Unreal back in 2014 Youth Radim Vrbata Jersey , you would know how photorealism can be achieved using a game engine like Unreal. If you haven't seen his video, you can check them out at youtube, just search for Koola Unreal. His videos have sent a shockwave to the ArchViz community. Since then many people has started to get their hands on Unreal.
Although Unreal can achieve quality similar to Vray, but there are few advantages of using Vray which stop people jumping into the Game Engine bandwagon straight away. The workflow of using game engine is a bit different to the traditional Vray. Below I have listed few major differences for between using Vray and Unreal for architectural visualisation.
Workflow
Vray
Easy workflow Youth Oliver Ekman-Larsson Jersey , model, texture, lighting and render all in 3ds Max (or other 3d software). Because 3ds Max has a long history in architectural visualisation filed. There are tons of scripts and support forums which help artists to archive their final render. You have more control during the post-production process using Photoshop or Aftereffects.
Unreal
Modelling and texturing in 3ds Max, but the models need to be optimised for the game engine. We can't have a half a million polygon sofa. Baking normal maps from high resolution models to the low resolution models is common. Wall and ceiling construction has to model with baking lightmaps in mind. So it requires a lot more time in preparing assets Youth Nicklas Grossmann Jersey , until you can buy more off the shelf assets from Evermotion, you have to optimise all the heavy geometry models. There is also a steep learning curve in using the lighting and shaders in Unreal.
Design iterations
Vray
Changes to models, textures and lighting require re-rendering the scene. This consumes a lot of time and costly to the clients. The turnaround time is slow as well.
Unreal
Since everything is real time, you can show the changes inside Unreal. Game build time is a lot quicker than render time. You can even build-in feature to give clients options of different materials or furniture to swap in real time.
Presentation
Vray
It is limited to static render images or animation or more recently VR (virtual reality). There is no interactivity. But with additional software like Photoshop and AfterEffects Youth Mikkel Boedker Jersey , you can create different moods and enhance the raw render tremendously. For large poster marketing, you can render as high as you need.
Unreal
Interactivity is the crown jewel of using Unreal. You can walk through and experiencethe space, rather than just seeing it as an audience. You can turn on lights, change material on the fly. With VR headsets (eg. HTC Vive Youth Mike Smith Jersey , Samsung Gear VR and Oculus Rift) getting more popular, using Unreal to do a walkable virtual space seems imminent. The only drawback is you need a decent hardware to run the presentation smoothly.
Conclusion
As you can see Vray and Unreal have their pros and cons. I think the architectural visualisation landscape is changing to real time in near future as the GPU hardware become more affordable. Either with GPU rendering (eg. VrayRT, Iray, Octane) or using Game Engine (eg. Unreal Youth Michael Stone Jersey , Unity), there will be no more waiting hours for renders in the future.
The interactivity part will be more prominent as clients are getting more familiar it and the market would expect more than just a still render.
Gordon is a highly experienced individual in the field of 3D architectural visualization and the owner of Platypusdigit. Also he is an avid reader and writer.
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