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Miloslav Ciz 2022-06-29 20:56:10 +02:00
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# Billboard
In [3D](3d.md) [computer graphics](graphics.md) billboard is a flat image placed in the scene that rotates so that it's always facing the camera. Billboards used to be greatly utilized instead of actual [3D models](3d_model.md) in old [games](game.md) thanks to being faster to render (and possibly also easier to create than full 3D models), but we can still encounter them even today and even outside retro games, e.g. [particle systems](particle_system.md) are normally rendered with billboards. Billboards are also commonly called *[sprites](sprite.md)*, even though that's not exactly accurate.
In [3D](3d.md) [computer graphics](graphics.md) billboard is a flat image placed in the scene that rotates so that it's always facing the camera. Billboards used to be greatly utilized instead of actual [3D models](3d_model.md) in old [games](game.md) thanks to being faster to render (and possibly also easier to create than full 3D models), but we can still encounter them even today and even outside retro games, e.g. [particle systems](particle_system.md) are normally rendered with billboards (each particle is one billboard). Billboards are also commonly called *[sprites](sprite.md)*, even though that's not exactly accurate.
There are two main types of billboards: