Unreal Engine Vite Help

Reference

In this section

Topic

Covers

Console Variables

Vite-specific and commonly needed console variables, grouped by subsystem

Compile-Time Switches

The VITE_* build switches and what they change

Glossary

Terminology used throughout these docs

FAQ

Questions that come up repeatedly

Quick answers

A console variable I set does nothing

Most likely the feature is compiled out. VITE_RT_PSO_DEBLOAT defaults to 1 and removes the shader permutations for RTXDI, path tracing, ray-traced translucency, caustics and per-pixel ray-traced GI. The variables still set; nothing renders. See Compile-Time Switches.

A feature is missing from the editor

Check whether its plugin is enabled. Most bundled plugins default to off — see Bundled Plugins.

The build fails on a fresh clone

Usually a toolchain mismatch or missing .NET Framework 4.5 reference assemblies. See Build Troubleshooting.

Shaders behave as though my change did not happen

Stale cache. See Cache Management.

See also

03 August 2026