Unity iphone shader with vertex blending and lightmaps?

ZacD

I don't know anything about making shaders, and was wondering if anyone can help me with this.

osman

I think if you have the Unity iPhone, you get some that already do that . If you're like me, and first develop most of your stuff on a pc, using Unity Basic, then what you can do is, download a trial of Unity iPhone, and snatch the shaders from there. And once you're ready to publish your game you'll have to buy Unity Iphone anyways.
Hope that helps.

ZacD

I couldn't find any finished shaders doing what I wanted, I think I figured out everything but how to do the actual blending.

I think I figured out how to get everything set up and loaded, now I just need to figure out set up the actual blending, if anyone has any ideas.

[code]Shader "1UV lightmap with vertex blending" {

ZacD

I think I realized my problem, The vertex colors wont export. What format should I work with? I'm using XSI.

ZacD

Finally got the colored vertexes to work, now I gotta figure out how to blend it properly.

ZacD

Yay for more issues, vertex colors with no shading.

rube

check the #unity irc channel on irc.freenode.net (same network as #model_design). There's a few iphone devs there that may know the answer.

ZacD

Got it working properly, finally.

renderhjs

post at least some nugget or directions on how you did it or what the issue was, otherwise its a useless post for anyone else,
thx

ZacD

There's not many XSI users here, but I'll throw together a quick tutorial.

Here the shader.

Shader "Blend + Lightmap" {

Properties
{
   _MainTex ("Texture 1  (vertex A  = white)", 2D) = ""
   _Texture2 ("Texture 2  (vertex A = black)", 2D) = ""
   _LightMap ("Lightmap (RGB)", 2D) = "" { LightmapMode } 
}

SubShader
{
   BindChannels
   {
      Bind "vertex", vertex
      Bind "color", color
      Bind "texcoord", texcoord
   }
   
   Pass
   {
      SetTexture [_MainTex]
      SetTexture [_Texture2] {combine previous lerp(primary) texture}
      SetTexture [_LightMap] {combine texture * previous} 
    }
}

 
}

In xsi set up the lighting for the scene, make sure everything has unique UV's, and create a render map.

shift+w brings up vertex color mode.
ctrl+w brings up the options.

It has to be in alpha mode, and in order for the alpha colors to show up in the view port, go to display options > Vertex color > show alpha.

I exported as a fbx, I dunno if it works with the other formats.

If you have the weird vertex issue that I had above, just select the geometry under polygon selection and extract polygons and delete, my issue may of happened because I tried to merge floaters/seperate pieces of geometry.

sama.van

Maybe you already know this section of Unify but....

http://www.unifycommunity.com/wiki/index.php?title=Shaders