2.0 KiB
Materials: Commands
skyparms
Overview
skyParms
Specifies how to use the surface as a sky, including an optional far box (stars, moon, etc), optional cloud layers with any shader attributes, and an optional near box (mountains in front of the clouds, etc). Some of the VMAP specific commands use this as a reference as to what skybox to use for color, intensity etc.
The renderer will take it into account only if you do not supply any Stages in the material.
farbox: Specifies a set of files to use as an environment box behind all cloudlayers. Specify "-" for no farbox, or a file base name. A base name of "env/test" would look for files "env/test_rt.tga", "env/test_lf.tga", "env/test_ft.tga", "env/test_bk.tga", "env/test_up.tga", "env/test_dn.tga" to use as the right / left / front / back / up / down sides.
cloudheight: controls apparent curvature of the cloud layers - lower numbers mean more curvature (and thus more distortion at the horizons). Higher height values create "flatter" skies with less horizon distortion. Think of height as the radius of a sphere on which the clouds are mapped. Good ranges are 64 to 256. The default value is 128.
nearbox: Specified as farbox, to be alpha blended ontop of the clouds. This has not be tested in a long time, so it probably doesn't actually work. Set to "-" to ignore.
Example Sky Material
// Vera Visions Material
{
qer_editorImage textures/skies/dune.tga
skyParms textures/skies/dune/bg 256 -
noPicMip
noMipmaps
surfaceParm sky
surfaceParm noimpact
surfaceParm nolightmap
surfaceParm nodlight
{
program skybox
map $cube:textures/skies/dune/bg
map textures/skies/clouds/dunecloud.tga
map textures/skies/clouds/dunecloud_layer.tga
}
}