Plastic surface?

[Chretien]

Hello!

I'm designing a jump pad at the moment and I want to create a surface that got a plastic feel to it, something like the macbook. Could anyone give me a hint on as where to look in the shader manual? Or even better, post a script? Would be appreciated.

I will upload the jump pad source file as soon as it's finished so anyone can use it.

By the way, a tip: google "Dropbox".

[seremtan]

like the macbook

so a jump pad that looks ultra-cool but only a few players can bounce on it?

you could try using the shiny metal shader from the vanilla game, with a paler base texture..?

[sumatra]

Take this shader, edit it and use a different environment texture. Something more simple.
The base texture should be a basic light grey surface with little structure.

This should do the job quite well..

Code: Select all

textures/base_trim/pewter_shiney
{   
 
        {
                map textures/effects/tinfx.tga       
                tcGen environment
                rgbGen identity
	}   
        {
		map textures/base_trim/pewter_shiney.tga
                blendFunc GL_SRC_ALPHA GL_ONE_MINUS_SRC_ALPHA
		rgbGen identity
	} 
        {
		map $lightmap
                blendFunc GL_DST_COLOR GL_ONE_MINUS_DST_ALPHA
		rgbGen identity
	}
}

EDIT: Too slow.

[Pat Howard]

like the macbook

so a jump pad that looks ultra-cool but only a few players can bounce on it?

zing!

--

Sumatra, you didn't mention that the base texture needs an alpha to work with this shader. That tricked me for a while . Is it like this with all env. maps?

[fKd]

if you manage to make this texture look cool, can you post it? i need a nice white plastic texture. cheers

[jal_]

Those materials (like the plastics used in Portal, right?) are very hard to do semi-right in the Q3 engine. :/

[sumatra]

Ye, it doesn't work really well. But I tried to come near such an effect.
Maybe you try this, needs some finetuning though:

http://rapidshare.com/files/341996389/plastic.pk3.html



Problem is the lighting of such surfaces. This must be done well thought.
Otherwise you get grey surfaces which are too shiny, or you get white surface while losing the shiny effect.

Here the script:

Code: Select all

textures/plastic/plastic
{   

        {
		map textures/plastic/fx.tga       
		tcGen environment
		rgbGen identity
	}   
        {
		map textures/plastic/plastic.tga
		blendFunc GL_SRC_ALPHA GL_ONE_MINUS_SRC_ALPHA
		rgbGen identity
	}
	{

		map $lightmap
		blendFunc GL_DST_COLOR GL_ONE_MINUS_DST_ALPHA
		rgbGen identity
	}
	{
		map textures/plastic/plastic.tga
		rgbGen wave noise .2 0 0 0
		blendfunc GL_ONE GL_ONE
	}
}

I tried to balance the grey to a brighter tone (almost white) with the blendfunc GL_ONE GL_ONE at the end.

Maybe that helps someone.
Cheers sum

P.S. Yes Pat, sorry, missed that :-P

[obsidian]

If it's glossy throughout, wouldn't you want the environment map rendered after the base layer?

Nice and simple:

Code: Select all

textures/obs_test/ifrag
{
	{
		map $whiteimage 
		rgbGen const ( 0.875 0.875 0.875 )
	}
	{
		map textures/effects/envmapdim.tga
		blendfunc add
		tcGen environment 
	}
	{
		map $lightmap 
		blendfunc filter
		tcGen lightmap 
	}
}

[Pat Howard]

Sumatra,

Looks cool, but Rapidshare won't let me download it. (Servers are too backed up for free users or some shite .) Could you host it somewhere else for download?

Coincidentally I've also been trying to create a good plastic env. map. I've been getting the best results by simply putting some very small intense white hot spots on a black background and then adding a faint plastic wrap filter for a tiny bit of gloss. I'm just using the shiny pewter shader for now. Looks best on curvy surfaces. Here's a shot of mine on a weird pillar thing:

[cityy]

I would love to see a map with this sheme. Looks pretty nice Pat.

[fKd]

hahahahahaha very good pat, very good indeed!

and cityy, heh you are in for a surprise!

[Pat Howard]

The only problem is it's so hard to light well. Either looks way too light or way too dark. Flat colors do that I guess. Perhaps someone could take a look at my blendfuncs? (I know, I know, I need to read the shader manual again.)

@Obs, your shader was good, but even brighter than mine. Also, you don't need all that gloss on a plastic.

[obsidian]

Adjust the first 2 stages with rgbGen const as needed. I just wrote that off the top of my head so I don't know how it actually looks in game. It's also using a default Q3 texture, no doubt you can make your own texture better.

[Pat Howard]

Hey, that helped a lot! Thanks obsidian. Here's the link to my shader if anyone's interested: http://www.divshare.com/direct/10303483-4de.zip

[Chretien]

Thanks everyone for sharing!