TerrainMaterialBlend
Description
A set of coefficients that control how material albedo and vertex colors are combined.
The following formula is used to compute the final color:
materialAlbedo = Albedo of terrain material (linear sRGB)
vertexColor = Vertex color of terrain mesh (linear sRGB)
grayscale = Material albedo, converted to grayscale:
materialAlbedo.r * 0.2126
+ materialAlbedo.g * 0.7152
+ materialAlbedo.b * 0.0722
maxBrightness = Vertex color, converted to maximum brightness:
vertexColor
/ max(vertexColor.r, vertexColor.g, vertexColor.a)
A = The material albedo to use for blending:
(1 - MaterialAlbedoGrayscale) * materialAlbedo
+ MaterialAlbedoGrayscale * grayscale
B = The vertex color to use for blending:
(1 - VertexColorBrightness) * vertexColor
+ VertexColorBrightness * maxBrightness
finalColor = (1 - BlendMaterial - BlendVertex) * A * B
+ BlendMaterial * A
+ BlendVertex * B