Isn't light pass the final pass in Unity shader ?

Hi there,

I've been testing some shader code.

I'll show you the code

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Spoiler: shadercode

Code (CSharp):

1. Shader "Custom/TestLightShader" {
2.     Properties {
3.         _MainTex ("Base (RGB) Gloss (A)", 2D) = "white" {}
4.     }
5.     SubShader {
6.         Tags { "RenderType"="Opaque" }
7.         LOD 250
8.     CGPROGRAM
9.     #pragma surface surf TestBlinnPhong exclude_path:prepass nolightmap noforwardadd halfasview interpolateview
10.  
11.     inline fixed4 LightingTestBlinnPhong(SurfaceOutput s, fixed3 lightDir, fixed3 halfDir, fixed atten)
12.     {
13.         fixed4 c;
14.         c.rgb = 0;
15.         return c;
16.     }
17.  
18.     sampler2D _MainTex;
19.  
20.     struct Input {
21.         float2 uv_MainTex;
22.     };
23.  
24.     void surf (Input IN, inout SurfaceOutput o) {
25.         fixed4 tex = tex2D(_MainTex, IN.uv_MainTex);
26.         o.Albedo = tex.rgb;
27.         o.Gloss = tex.a;
28.         o.Alpha = tex.a;
29.     }
30.     ENDCG
31.     }
32.  
33.     FallBack "Mobile/VertexLit"
34. }

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I added LightingTestBlinnPhong Func.
It just make zero rgb value as test.

I thought final color is black.

but I got a little darkness with basetexture ( 'SurfaceOutput s' just have basetexture )

like this.




Lighting pass is final pass from i know.
i dont know, what is wrong.

I think, final color is calculated in lighting function when I use forward render pass.
So, If I set color in lightingfunc, it must shows.

How should i do ?

Anyone help me, any answer, Advice and comment.

Thank you.

 

The ambient lighting passes in the surface shader will be using your texture, though.

 

Thank you for your answer.

Is The ambient lighting passes processed after light pass ?

And Can i make custom ambient lighting func ?

thank you. have a nice day ^^

 

The ambient lighting happens as part of the forward base pass, you can turn the various functions off by adding the terms here to your #pragma surface line and writing your own into the forward base pass;
(Code generation options segment)
http://docs.unity3d.com/Manual/SL-SurfaceShaders.html

 

thank you for your answer. ^^

Is processed Ambient in SH ?

Is Envirounment light the same as "H" light in the picture of the link ( http://docs.unity3d.com/Manual/SL-SurfaceShaders.html ) ?

thank you. ^^