Add decals to material alternatives
Decals can be added to material alternatives. Each alternative can show the same decal with different material properties, positions, or decal textures. The order of decals on objects can also be added to material alternatives.
Each alternative creates copies of your decal for every object it is applied to. To avoid excessive amounts of materials in the scene, optimize the objects in the scene as much as possible before creating decal alternatives.
For more information on alternatives and lineups, see Set up alternatives.
Decals use extensive system resources to be drawn in the scene, and can affect the interactivity of scenes. To improve decal performance, optimize the scene first (grouping objects and combining entities), then apply decals to objects in the scene.
For more information on combining, see Combine and separate objects to improve frame rate.
Decal texture image recommendations
The size and type of image used for decal textures can affect performance. Use only enough resolution and color for the intended output. Some general guidelines (but not limits) for decal texture images are: