Level of Detail. Also spelled "LoD." The value that determines when the
switches between mipmaps occur during texture sampling.
+ layer
+ This term is used as the name of the "3rd coordinate" of a resource.
+ 3D textures have zslices, cube maps have faces, 1D and 2D array textures
+ have array members (other resources do not have multiple layers).
+ Since the functions only take one parameter no matter what type of
+ resource is used, use the term "layer" instead of a resource type
+ specific one.
+
GLSL
GL Shading Language. The official, common high-level shader language used
in GL 2.0 and above.