how to make a decal

[h8or]

Hello every one.
I would like to put some decals to q3 maps.
q3map2 suport decals.
I just wonder if its possible to make them in a high level way.

[DanielPharos]

One way is to create a bezier and 'float' it just above the surface. I've seen many games do that. As long as the beziers are small (not clearly visible from a large distance), this will work just fine.

There probably is some decal-keyword in the shaders for decals. Making a bezier and putting it ON the surface might work also because of that (I remember Q3 having some keywords for this?).

[h8or]

Q3map2 has a entity wich works like a spotlight.
We can atach a target_position and half magic is done.

_decal
Specifies a decal to be projected. Should contain one or more patch meshes and target an info_null entity. The targetting line drawn between the center of the _decal entity and the targetted info_null is the axis and distance of projection. It helps to think of the _decal mesh as if it were a light gel, the info_null were the target of a spotlight, and that you were "shining" this decal onto map geometry.

http://shaderlab.com/q3map2/screenshots/decal_0259.jpg
http://shaderlab.com/q3map2/screenshots/decals_00.jpg

And the code for .map file looks like this:

Code:

entity 5
{
"classname" "_decal"
"target" "t1"
// brush 0
{
patchDef2
{
rad/decal2
( 3 3 0 0 0 )
(
( ( 176 -72 -152 0 1 ) ( 200 -48 -64 0 0.500000 ) ( 200 -48 -64 0 0 ) )
( ( 176 -72 -152 0.500000 1 ) ( 200 -48 -64 0.500000 0.500000 ) ( 200 -48 -64 0.500000 0 ) )
( ( 240 -136 -152 1 1 ) ( 264 -112 -64 1 0.500000 ) ( 264 -112 -64 1 0 ) )
)
}
}
}

I thought quark suports _decal entities.