Mapdev:skyreflectmod

Sky Reflection Modifier Texture

Sets the weight for mixing the diffuse texture colour with the reflected colour of the sky. This occurs before any other shading calculations use the diffuse colour.

This can be used to suggest a surface composed of reflective materials, such as ice or crystals.

Example

Without Sky Reflection Modifier Map	With Sky Reflection Modifier Map

Specification

mapinfo.lua

The relevant sections of the mapinfo.lua

local mapinfo = {
   ...
   resources = {
      ...
      skyReflectModTex = "skyreflectmod.png",
      ...
   },
   ...
}

Image File

File Location	./maps/
File Format	PNG, TGA
Colour Depth	8bpp
Channels	RGB
Resolution	Any, recommended powers of two, will be stretched over the terrain. Should be the same size as the Mapdev:specular image

Modifies the diffuse colours as follows:
diffuseColor.r = diffuseColor.r * (1 - skyReflectModTex.r) +
                   reflectionColor.r * skyReflectModTex.r
diffuseColor.g = diffuseColor.g * (1 - skyReflectModTex.g) +
                   reflectionColor.g * skyReflectModTex.g
diffuseColor.b = diffuseColor.b * (1 - skyReflectModTex.b) +
                   reflectionColor.b * skyReflectModTex.b

Equivalent to the GLSL code: (diffuseColor is a vector)
diffuseColor = mix(diffuseColor, reflectionColor, skyReflectModTex)