Unity3D Geometry LOD Stuff

• Level of Detail (LOD)
  "Unity lets you set maximum LOD levels and a LOD bias preference (ie, whether to favour higher or lower LOD levels at threshold distances) in the Quality Settings."

Unity3D Shader LOD Stuff

Unity3D Documentation:

• Shader LOD Values
  VertexLit kind of shaders = 100
  Decal, Reflective VertexLit = 150
  Diffuse = 200
  Diffuse Detail, Reflective Bumped Unlit, Reflective Bumped VertexLit = 250
  Bumped, Specular = 300
  Bumped Specular = 400
  Parallax = 500
  Parallax Specular = 600
  
• Global Shader LOD Setting

Shader Forge:

• Shader Forge Subshader Workaround
  "There's no way to make subshaders in SF at the moment, but you can define a fallback shader and specify the LOD level"

Conversion Chart

Decimal	8bit	Angular
0.05	13	18
0.1	26	36
0.15	38	54
0.2	51	72
0.25	64	90
0.3	77	108
0.35	90	126
0.4	102	144
0.45	115	162
0.5	128	180
0.55	141	198
0.6	154	216
0.65	166	234
0.7	179	252
0.75	192	270
0.8	205	288
0.85	218	306
0.9	230	324
0.95	243	342
1.0	255	360