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Topic: Lightwave weight/color maps and q3map2?

MegaMan44
The Afflicted

Joined: 17 Jun 2001
Posts: 604

Posted: 05-10-2005 10:53 AM

Does anybody know if its possible to get Vertex weight- and/or color maps exported from lightwave into q3map2? i tried it like it should work on d3 (d3w.org post) but it seems to get ignored, whatever i do.

didnt RR2DO2 develop the lwo support? how can i contact him?

is it possible using ase and 3dmax? if yes, how do you do it in that package?

thanks alot!

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obsidian
I'm the dude!

Joined: 04 Feb 2002
Posts: 12498

Posted: 05-10-2005 11:30 AM

3dsMAX has a vertex paint modifier. Selecting it should open up a new toolbar panel with some tools that you can use to paint on your model in real-time.

ASE models support vertex colours, just make sure that you select the option in the export dialog.

Curious, what are you trying to do exactly? Trying to paint shadows on your model or some sort of wacky terrain blending method?

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megaman
Gibblet

Joined: 26 Feb 2005
Posts: 23

Posted: 05-10-2005 05:44 PM

Im trying some wacky terrain blending method it would be _much_ more comfortable to be able to paint in lw.

im using a two (+lightmap) stage shader: one stage without blend and the other one using alphagen vertex, just like the alphamod blending shaders do. there's no alphamod_set and i tried both having alphamod_volume and not having it. if i do blends manually in gtkr via alphaset brushes everything works like a charm

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obsidian
I'm the dude!

Joined: 04 Feb 2002
Posts: 12498

Posted: 05-10-2005 05:56 PM

Not sure (someone might want to confirm this) but I don't think Q3Map2 can read the LWO or ASE file and look for vertex colour information. It can only read the vertex alpha info set by alphaMod_volume brushes.

Again, might want to confirm this, but it would explain why it's not doing what you want it to do.

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MegaMan44
The Afflicted

Joined: 17 Jun 2001
Posts: 604

Posted: 05-10-2005 06:15 PM

oh, fast answer. why wouldnt q3map2 do that? it'd be pretty handy.

also, i just noticed by accident that if I cancel the -light process, in r_vertexlight 1 all the vertices are painted like they are in lightwave's color map. so it looks like q3map2 can at least preserve the vertex values.

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Kat
True Nightmare

Joined: 14 Nov 2000
Posts: 4216

Posted: 05-10-2005 08:19 PM

Funny enough, there's no direct support for it i.e. it's not a diliberate feature that's supported.

I found out by accident that vertex colours are carried through into ASE meshes at least. I coloured a terrain mesh purple and forgot to change it when exporting from Max. The texture sat on top of the mesh was grey but when the mesh was compiled and into game it had a purply colour to it instead of being grey.

I don't think you can do that Doom 3 type of blending as it relies on the shaders understanding what it's supposed to do with the vertex colours. Q3map2 preserves the colour as a side effect rather than by design from what I've seen.

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ydnar
Immortal

Joined: 15 Dec 2000
Posts: 2297

Posted: 05-10-2005 10:38 PM

There is, but I forget what I called it. Something like q3map_preserveVertexLight or something. You'll need to set your shaders up to use rgbGen vertex/exactVertex to use.

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obsidian
I'm the dude!

Joined: 04 Feb 2002
Posts: 12498

Posted: 05-11-2005 05:44 AM

ydnar wrote:
There is, but I forget what I called it. Something like q3map_preserveVertexLight or something. You'll need to set your shaders up to use rgbGen vertex/exactVertex to use.

Hmmm, interesting. But will Megaman be able to assign a texture stage to a vertex colour?

BTW, where's the q3map2 source (I forgot the url). I'd like to go through it again and see if I can find any other forgotten shader directives.

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Kat
True Nightmare

Joined: 14 Nov 2000
Posts: 4216

Posted: 05-11-2005 06:46 AM

ydnar wrote:
There is, but I forget what I called it. Something like q3map_preserveVertexLight or something. You'll need to set your shaders up to use rgbGen vertex/exactVertex to use.
To echo Obsidian "Hmmm, interesting".

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MegaMan44
The Afflicted

Joined: 17 Jun 2001
Posts: 604

Posted: 05-12-2005 02:48 PM

ydnar: is there a way to use the imported color values for alpha blending texture stages? does it sound like much work to make q3map2 not ignore the values passed in by q3map2 and convert them to vertex alpha values?

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oh, fast answer. why wouldnt q3map2 do that? it'd be pretty handy. also, i just noticed by accident that if I cancel the -light process, in r_vertexlight 1 all the vertices are painted like they are in lightwave's color map. so it looks like q3map2 can at least preserve the vertex values.

There is, but I forget what I called it. Something like q3map_preserveVertexLight or something. You'll need to set your shaders up to use rgbGen vertex/exactVertex to use.

ydnar wrote:There is, but I forget what I called it. Something like q3map_preserveVertexLight or something. You'll need to set your shaders up to use rgbGen vertex/exactVertex to use.To echo Obsidian "Hmmm, interesting".

ydnar: is there a way to use the imported color values for alpha blending texture stages? does it sound like much work to make q3map2 not ignore the values passed in by q3map2 and convert them to vertex alpha values?

oh, fast answer. why wouldnt q3map2 do that? it'd be pretty handy.

also, i just noticed by accident that if I cancel the -light process, in r_vertexlight 1 all the vertices are painted like they are in lightwave's color map. so it looks like q3map2 can at least preserve the vertex values.

ydnar wrote:
There is, but I forget what I called it. Something like q3map_preserveVertexLight or something. You'll need to set your shaders up to use rgbGen vertex/exactVertex to use.
To echo Obsidian "Hmmm, interesting".