Mapdev:lightemission
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Adds colour to a fragment (pixel). The colour added is the RGB colour of the emission texture, while the alpha of the emission texture determines the amount of the original colour that remains.
Can be used for accentuation. For example, metal spots in shadowed regions
Without Light Emission Texture | With Light Emission Texture |
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Specification
mapinfo.lua
The relevant sections of the mapinfo.lua
local mapinfo = { ... resources = { ... lightEmissionTex = "light_emission.png", ... }, ... }
Image File
File Location | ./maps/ |
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File Format | PNG, TGA |
Colour Depth | 8bpp |
Channels | RGBA |
Resolution | Any, recommended powers of two, will be stretched over the terrain. Should be the same size as the Mapdev:specular image |
Modifies the fragment color as follows fragmentColor.rgb = fragmentColor.rgb * (1 - lightEmissionTex.a) + lightEmissionTex.rgb