Performance

How many meshes can it blend?

MeshBlend is a screen space effect. You can have 5 or 5.000.000 blended meshes in your scene without much performance impact.

Shader performance

Shader cost is ~0.2-0.4 ms on an average PC at 1440p render resolution. There are 4 quality presets targeting offline rendering and high end PC down to Xbox Series S/low end PCs, so this can be tuned to preference.

In progress

Will update perf numbers closer to launch.

5.6 improvements

The plugin needs to do a texture copy when running in Unreal prior to 5.6. This has a tiny performance hit.

This can be backported by integrating this commit and modifying the FMeshBlendSceneViewExtension so it executes the SubscribeToPostProcessingPass function.

Actor performance

The plugin has a MeshBlend Activator Actor that runs in the level.

• In editor this is restricted to a max ms budget (default: 0.3 ms)
• In packaged game most of the work is pre-caluculated on packaging, so it generally just idles.