Update shader to unity5

Hi Im using a shader that looks like photoshop's overlay blending mode.

When I updated my project to unity5, the shader show this error:

"Support for SetTexture combiner +- has been removed"

This is the shader:

Code (CSharp):

1. Shader "Custom/Photoshop Overlay"
2. {
3.     Properties
4.     {
5.         _MainTex ("Base (RGB), Alpha (A)", 2D) = "" {}
6.     }
7.     SubShader
8.     {
9.         LOD 100
10.         Tags
11.         {
12.             "Queue" = "Transparent"
13.             "IgnoreProjector" = "True"
14.             "RenderType" = "Transparent"
15.         }
16.         Pass
17.         {
18.             Cull Off
19.             Lighting Off
20.             ZWrite Off
21.             Fog { Mode Off }
22.             Offset -1, -1
23.             ColorMask RGB
24.            // AlphaTest Greater .01
25.             Blend SrcAlpha OneMinusSrcAlpha
26.             ColorMaterial AmbientAndDiffuse
27.             SetTexture [_MainTex]
28.             {
29.                 Combine Texture +- Primary, Texture * Primary
30.             }
31.             SetTexture [_MainTex]
32.             {
33.                 Combine Texture +- previous, Texture * Primary
34.             }
35.         }
36.     }
37. }

How do I fix it?

 

You'll need to write it as a Surface shader or fragment shader. The fixed pipeline is becoming a thing of the past.