Why Vantage is slower than UE5?

[martin_petkov]

Why Vantage is slower than UE5 in realtime (i know that ue5 is game engine and its different) ? Can you explane the principles and is there a potential to be similar in speed after some updates? Thanks in advance!

[npg]

Vantage is a fully raytraced engine, a path tracer. It does not rasterize. Game engines have only just begun to ray trace *some* of their effects, not everything. So we trace a lot more rays which is more costly, but the latest generations of GPUs allow us to do it with decent frame rates.

[martin_petkov]

ngp Thanks and why do we need all to be raytraced when in unreal 5 the final product is amazing. Is it something with lumen lighting?

[npg]

One of the reasons is that our engine can be as close as possible to V-Ray. Another major advantage of raytracing is that we can have huge amounts of geometry (especially instanced) without choking the renderer, which would happen if it was a rasterizer. Yes, UE5 has Nanite, etc. but keep in mind we started developing Lavina/Vantage years before this was announced.

[martin_petkov]

Thanks for the answer!