Custom sprite shader Broke Unity 5

Hey guys,

In a 2d game I'm working on I use a custom shader I found online to give the enemies and players a white flash effect when they get hit.

The shader worked fine in Unity 4.6 but now In Unity 5 the shader acts weird. I've attached a screenshot of the problem.

Code (CSharp):

1. Shader "Sprites/Diffuse Flash"
2. {
3.     Properties
4.     {
5.         [PerRendererData] _MainTex ("Sprite Texture", 2D) = "white" {}
6.         _SelfIllum ("Self Illumination",Range(0.0,1.0)) = 0.0
7.         _FlashAmount ("Flash Amount",Range(0.0,1.0)) = 0.0
8.         _Color ("Tint", Color) = (1,1,1,1)
9.         _FlashColor ("FlashColor", Color) = (1,1,1,1)
10.         [MaterialToggle] PixelSnap ("Pixel snap", Float) = 0
11.     }
12.  
13.     SubShader
14.     {
15.         Tags
16.         {
17.             "Queue"="Transparent"
18.             "IgnoreProjector"="True"
19.             "RenderType"="Transparent"
20.             "PreviewType"="Plane"
21.             "CanUseSpriteAtlas"="True"
22.         }
23.  
24.         Cull Off
25.         Lighting Off
26.         ZWrite Off
27.         Fog { Mode Off }
28.         Blend SrcAlpha OneMinusSrcAlpha
29.  
30.         CGPROGRAM
31.         #pragma surface surf Lambert alpha vertex:vert
32.         #pragma multi_compile DUMMY PIXELSNAP_ON
33.  
34.         sampler2D _MainTex;
35.         fixed4 _Color;
36.         fixed4 _FlashColor;
37.         float _FlashAmount,_SelfIllum;
38.        
39.         struct Input
40.         {
41.             float2 uv_MainTex;
42.             fixed4 color;
43.         };
44.        
45.         void vert (inout appdata_full v, out Input o)
46.         {
47.             #if defined(PIXELSNAP_ON) && !defined(SHADER_API_FLASH)
48.             v.vertex = UnityPixelSnap (v.vertex);
49.             #endif
50.             v.normal = float3(0,0,-1);
51.            
52.             UNITY_INITIALIZE_OUTPUT(Input, o);
53.             o.color = _Color;
54.         }
55.  
56.         void surf (Input IN, inout SurfaceOutput o)
57.         {
58.             fixed4 c = tex2D(_MainTex, IN.uv_MainTex) * IN.color;
59.             o.Albedo = lerp(c.rgb,float3(_FlashColor.r,_FlashColor.g,_FlashColor.b),_FlashAmount);
60.             o.Emission = lerp(c.rgb,float3(_FlashColor.r,_FlashColor.g,_FlashColor.b),_FlashAmount) * _SelfIllum;
61.             o.Alpha = c.a;
62.         }
63.         ENDCG
64.     }
65.  
66. Fallback "Transparent/VertexLit"
67. }
68.  

Here's the script. Is there anyone who could help me out?

 

I too am using a modified version of this shader and am having the same issue. If you manage to fix it, could you post it here? Thanks

 

You now need to multiply the o.Albedo by the alpha:
o.Albedo = {your fancy color stuff} * c.a;

 

Hi jakkovanhunen,

I updated the line, based on your suggestion, to:

Code (CSharp):

1. o.Albedo = lerp(c.rgb,float3(_FlashColor.r,_FlashColor.g,_FlashColor.b),_FlashAmount) * c.a;

This didn't fix the issue, unfortunately.

 

I have to agree, this suggestion doesn't work

 

Ah, well it solved some shader problems for me that looked similar. Guess they were not similar after all.

 

In 5 there is different types of alpha mode in the shader, change this:

#pragma surface surf Lambert alpha vertex:vert

To this:


#pragma surface surf Lambert alpha:blend vertex:vert

It should fix it!

 

HERO!

This works perfectly, thanks a lot!

 

No problem Thom!

 

Thanks alot for the solution! ;D