B站：Godot 4 SDFGI vs Unreal 5 Lumen （视频名称）
Juan Linietsky说：
Been asked many times the difference between UE5 Lumen and Godot 4 SDFGI (both are real-time, open-world capable). I unfortunately am not super familiar with how Lumen works. So far what I can gather (Image below is SDFGI).
Lumen: * High quality, mostly leak-free, supports dynamic (non-deformable) objects, high freq light. * Complex objects need to be manually split in parts. * Meshes need storage space on for high res SDF. * Won't work with procedural geometry. * Poor reflections. * High end only.
SDFGI: * Reasonable quality, very thin walls can leak light, no high freq detail (need SSGI to this). * No dynamic objs for now (likely 4.1). * Instant-on, Just Works (tm). * Great sharp (voxel) and rough reflections. * Procedural is fine. * Runs on old GPUs.
So, in short, I think Lumen is aimed at high end, and is significantly more laborious to use, but looks great. It will probably not have much reason to be when raytracing becomes more available, other than working with Nanite..
I think Lumen looks and works really well, but it is also true that we lack more high quality art to showcase. We are working on it, though.
Juan Linietsky说：
Been asked many times the difference between UE5 Lumen and Godot 4 SDFGI (both are real-time, open-world capable). I unfortunately am not super familiar with how Lumen works. So far what I can gather (Image below is SDFGI).
Lumen: * High quality, mostly leak-free, supports dynamic (non-deformable) objects, high freq light. * Complex objects need to be manually split in parts. * Meshes need storage space on for high res SDF. * Won't work with procedural geometry. * Poor reflections. * High end only.
SDFGI: * Reasonable quality, very thin walls can leak light, no high freq detail (need SSGI to this). * No dynamic objs for now (likely 4.1). * Instant-on, Just Works (tm). * Great sharp (voxel) and rough reflections. * Procedural is fine. * Runs on old GPUs.
So, in short, I think Lumen is aimed at high end, and is significantly more laborious to use, but looks great. It will probably not have much reason to be when raytracing becomes more available, other than working with Nanite..
I think Lumen looks and works really well, but it is also true that we lack more high quality art to showcase. We are working on it, though.
