Deferred Decals

A deferred decal is a decal rendered based on the image deferred buffer depth value and there is no real geometry rendered at all. Such decals are preferable from the performance cost, though they do not support instancing and each decal costs at least a DIP.

Moreover, these decals are compatible with hardware tessellation and terrain LOD transitions. However, the scene must be divided into the rendering groups (up to eight groups for opacity object and decals are available) to prevent unnecessary deferred decals projection on geometry.

Types of Deferred Decals

There are 3 types of deferred decals:

Orthographic Deferred Decal is a decal projected onto a surface by means of orthographic projection.
Proj Deferred Decal is a decal projected onto a surface by means of the perspective projection.
Mesh Deferred Decal is a decal based on the arbitrary .mesh file and projected onto a surface by means of the orthographic projection.

Deferred Decals

Types of Deferred Decals

See Also