I’m seeing extremely high shader complexity when using Vulkan to render Nanite meshes.
Example:
DX12: https://i.imgur.com/jK8iX1N.jpeg
Vulkan: https://i.imgur.com/QUoUCjp.jpeg
The building which is green in both pictures is not using Nanite. Is this expected behaviour?
I also noticed the same bug with my grass. Shader complexity greatly increased on F5 view to Red from Green with nanite grass.
Experiencing this too with Vulkan, and this seems to not just be related to Nanite.
Noticed when dragging a simple Plane into a scene with Shader Complexity viewmode on:
And here’s a new VR template project shown with 4 different RHI settings, and with nothing else changed:
I submitted a bug report because this seems quite wrong.
To be honest, it feels more like the viewmode itself is reporting inaccurately; the performance doesn’t feel worse in Vulkan than DirectX. But I’m no expert in graphics, thus me submitting a bug report…
im having the same problem in 5.3 with vulkan and linux. i don’t have tho option to switch to d3d
my material is super simple yet when i switched to 5.3 the performance is really bad.
i even tried to make a material that outputs a constant 0 on all pins and the performance doesn’t change at all.
with nanite
if i disable nanite for a mesh
and the overview
