Mapdev:normal: Difference between revisions
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= Normal Texture = | = Normal Texture = | ||
Gives the terrain a normal map. This can be used to suggest small surface details while keeping terrain flat. The RGB channels determine the XYZ of the new surface normal (in tangent space), while the alpha channel determines how much of the original surface normal is kept. | |||
[https://code.google.com/p/gimp-normalmap/ This GIMP plugin] provides various ways to convert heightmaps into normal maps. | |||
{{infobox|title=Caution|icon=icon-caution.png|color=rgba(255,0,0,0.1) | {{infobox|title=Caution|icon=icon-caution.png|color=rgba(255,0,0,0.1) | ||
|body=Requires clients to have GLSL-spec hardware}} | |body=Requires clients to have GLSL-spec hardware}} | ||
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! Without Normal Map !! With Normal Map | ! Without Normal Map !! With Normal Map | ||
|}</center> | |}</center> | ||
= Specification = | = Specification = | ||
== mapinfo.lua == | == mapinfo.lua == | ||
Revision as of 00:50, 25 February 2013
Normal Texture
Gives the terrain a normal map. This can be used to suggest small surface details while keeping terrain flat. The RGB channels determine the XYZ of the new surface normal (in tangent space), while the alpha channel determines how much of the original surface normal is kept.
This GIMP plugin provides various ways to convert heightmaps into normal maps.
|
Caution |
|---|---|
| Requires clients to have GLSL-spec hardware |
| FIXME: needs image file | FIXME: needs image file |
| Without Normal Map | With Normal Map |
|---|
Specification
mapinfo.lua
The relevant sections of the mapinfo.lua
local mapinfo = {
...
resources = {
...
detailNormalTex = "normal.png",
...
},
...
}Image File
| File Location | ./maps/ |
|---|---|
| File Format | PNG, TGA |
| Colour Depth | 8bpp |
| Channels | RGBA |
| Resolution | Any, recommended powers of two, will be stretched over the terrain. |
Modifies the shading normal as follows
shadingNormal.xyz = NORMALIZE(terrainNormal.xyz * (1 - detailNormalTex.a)
+ detailNormalTex.rgb)
