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Photorealism in VR on Meta Quest 3

Why spend our days modelling when we can digitise reality?

Most VR apps suffer from the „plastic effect“. The environment feels sterile, artificial and unconvincing. At VR3D.cz we take a different path. Instead of imitating reality in a complicated way, we directly transfer it into digital space. See how the combination of cutting-edge 3D scanning and optimization for Unreal Engine 5 is changing the game.

Problem: Reality is full of imperfections

When a 3D graphic designer models a brick wall „from scratch“, the result is often too perfect. The bricks are the same, the joints are straight. To make the wall look real, the graphic designer has to spend hours creating cracks, moss stains and chips. This is called „environmental storytelling“ and is very time (and therefore money) consuming.

Our approach? We just scan the wall.

Case Study: dragon sculpture by Michal Olšiak

Let us imagine a concrete example from our practice - a monumental dragon sculpture. We have two ways to get it into your VR app:

  1. Classic way (Hand modelling): A senior 3D graphic designer would have to spend 40 hours or more sculpting in ZBrush, modeling each scale, estimating proportions from photos, and then hand-painting the textures. Even the best graphic designer brings his „artistic interpretation“ to the work. The result will be beautiful, but it will never be exactly the dragon.

  2. VR3D.cz (3D Scanning & Photogrammetry): We'll arrive on site with the equipment. During 2 hours we'll collect the data. Then the software RealityCapture within about 4 hours machine time creates a digital twin with millimetre precision.

The result? We get a model that not only has perfect proportions, but contains every chisel indentation, every lichen stain, and the exact patina of the material. All this in a fraction of the time of human labour.

Challenge: How to get millions of polygons into glasses?

This is where our core expertise comes in. Anyone can scan an object. But getting a raw scan (which often has tens of millions of polygons) into a standalone glasses Meta Quest 3, that have the power of a cell phone, that's an engineering discipline.

Unlike PC VR, where we can use technologies like Nanite, we have to do brutal optimization for Quest 3:

  1. Retopology: From a million triangles, we create an optimized network (Low-poly) that has only thousands of polygons but preserves the shape.

  2. Baking (Baking textures): All details from the original scan (cracks, bumps) are „baked“ into special textures (Normal maps).

  3. Result: In VR, you see a visually rich, photorealistic object, but the goggle system renders it completely smoothly at 72 frames per second.

Why is this important to the client? Because your app won't chop, it won't overheat, and users will be comfortable in it, even if the scene looks like a movie set.

Our tech: When the iPhone isn't enough

You can't rely on hobby tools for professional development. Our workflow is based on industry standards:

  • Leica RTC360: A laser scanner that guarantees absolute dimensional accuracy. If we're digitizing a production floor or a film set, we know that the dimensions fit to the millimeter.

  • Sony Alpha A7R: A high-resolution, full-frame mirrorless camera that captures textures in such high quality that you can read the tiny lettering on machine labels in VR.

This combination allows us to deliver not only for VR applications, but we have also been using it for a long time for film industry (VFX), where the demands on quality are the highest.

When to choose scanning and when to choose modelling?

To be fair, we don't scan everything. Our workflow is ideal for:

  • Environment and architecture: Castles, factory halls, caves, offices.

  • Complex objects (Props): Sculptures, historical furniture, intricate engineering parts, food, natural objects.

On the other hand, we model and program the interactive elements to be manipulated by the user in VR (levers, buttons, tools) in Unreal Engine by hand. This ensures a clean topology and error-free physics during interaction.

Conclusion: reality is the best graphic

If you want a VR app that immerses users in believability, don't try to mimic reality. Let us digitize it. You'll save development time and get a visual quality unmatched on the Meta Quest platform.

Do you have an object or space that you need to bring into virtual reality? Contact us and discuss the technical possibilities of your project.

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