- enables you to create and use large-sized textures for a lower—and more consistent—memory footprint at runtime.
- Unreal Engine supports two virtual texturing methods: Runtime Virtual Texturing (RVT) and Streaming Virtual Texturing (SVT).
- RVT supplies an efficient way to render complex, procedurally generated, or layered materials.
- Streaming Virtual Texturing reduces texture memory overhead when using larger texture sizes, including support for virtual texture lightmaps and UDIM (U-Dimension). Streaming virtual textures is an alternative way to stream textures from disk compared to existing mip-based texture streaming.
- Enabling support for virtual texture lightmaps can improve streaming performance and quality of lightmap bakes.
Runtime Virtual Textures
Supports larger texture resolutions. Texel data cached in memory on demand. Texel data generated by the GPU at runtime. Well suited for texture data that can be rendered on demand, such as procedural textures or composited layered materials.
Streaming Virtual Textures
Supports larger texture resolutions. Texel data cached in memory on demand. Texel data cooked and loaded from disk. Well suited for texture data that takes time to generate, such as lightmaps or large, detailed artist created textures.