Resolved Replace color with selected

Hello. I have texture that presents outline for the other texture.
It has blue color and I need shader that allows change color with any selected.
The shader I wrote just add (multiply) selected color to blue (i need replace).
Also it doesnt follow alfa.
Help me to write the shader/

Code (CSharp):

1. Shader "Custom/Recolor"
2. {
3.     Properties
4.     {
5.         _MainTex ("Main Texture", 2D) = "white" {}
6.         _Color ("Color", Color) = (1,1,1,1)
7.     }
8.     SubShader
9.     {
10.         Tags
11.         {
12.             "Queue"="Transparent" "RenderType"="Transparent"
13.         }
14.         CGPROGRAM
15.         #pragma surface surf Lambert// alpha
16.  
17.         struct Input
18.         {
19.             half2 uv_MainTex;
20.         };
21.  
22.         sampler2D _MainTex;
23.  
24.         float4 _Color;
25.         // float4 _White = half4(1, 1, 1, 1);
26.  
27.         void surf(Input IN, inout SurfaceOutput o)
28.         {
29.             fixed3 clr = tex2D(_MainTex, IN.uv_MainTex) * _Color;          
30.             o.Albedo = clr;
31.         }
32.         ENDCG
33.     }
34.     FallBack "Diffuse"
35. }

 

Some success!
With this shader I am able to set any color I want, but got also black color. I believe that is some transparent pixels become black. How to get rid of it?

Code (CSharp):

1. Shader "Custom/Recolor"
2. {
3.     Properties
4.     {
5.         _MainTex ("Main Texture", 2D) = "white" {}
6.         _Color ("Color", Color) = (1,1,1,1)
7.     }
8.     SubShader
9.     {    
10.         CGPROGRAM
11.         #pragma surface surf Lambert //alpha
12.  
13.         struct Input
14.         {
15.             half2 uv_MainTex;
16.         };
17.  
18.         sampler2D _MainTex;
19.         float4 _Color;
20.  
21.         void surf(Input IN, inout SurfaceOutput o)
22.         {
23.             float4 mask = tex2D(_MainTex, IN.uv_MainTex);
24.             float4 clr = _Color * mask.a;
25.             o.Albedo = clr;
26.         }
27.         ENDCG
28.     }
29.     FallBack "Diffuse"
30. }

 

Made some changes.
Now I see the some gray color added and affect texture by surface.
You can see on the attached picture left red stroke with gray outline. I need it to be clear as right blue one(original).

Code (CSharp):

1. Shader "Custom/Recolor"
2. {
3.     Properties
4.     {
5.         _MainTex ("Main Texture", 2D) = "white" {}
6.         _Color ("Color", Color) = (1,1,1,1)
7.     }
8.     SubShader
9.     {
10.         CGPROGRAM
11.         #pragma surface surf Lambert alpha
12.  
13.         struct Input
14.         {
15.             half2 uv_MainTex;
16.         };
17.  
18.         sampler2D _MainTex;
19.         fixed4 _Color;
20.  
21.         void surf(Input IN, inout SurfaceOutput o)
22.         {
23.             fixed4 mask = tex2D(_MainTex, IN.uv_MainTex);
24.             fixed4 clr = _Color * mask.a;        
25.  
26.             o.Albedo = clr;
27.             o.Alpha = clr.a;
28.         }
29.         ENDCG
30.     }
31.     FallBack "Diffuse"
32. }

 

I removed gray "Outline" around texture.
But if I select white color (and want to see my texture pure white) I see gray anyway.

Code (CSharp):

1. Shader "Custom/Recolor"
2. {
3.     Properties
4.     {
5.         _MainTex ("Main Texture", 2D) = "white" {}
6.         _Color ("Color", Color) = (1,1,1,1)
7.     }
8.     SubShader
9.     {
10.         CGPROGRAM
11.         #pragma surface surf Lambert alpha
12.  
13.         struct Input
14.         {
15.             half2 uv_MainTex;
16.         };
17.  
18.         sampler2D _MainTex;
19.         fixed4 _Color;
20.  
21.         void surf(Input IN, inout SurfaceOutput o)
22.         {
23.             fixed4 mask = tex2D(_MainTex, IN.uv_MainTex);
24.             fixed4 clr = _Color;        
25.  
26.             o.Albedo = clr;
27.             o.Alpha = mask.a;
28.         }
29.         ENDCG
30.     }
31.     FallBack "Diffuse"
32. }
33.  

 

Help me to set color to the texture.
Now it is affected by gray color.

 

So, I added MinusColor and devide selected color by MinusColor.
Then I select gray color for MinusColor.
This kind of fix the issue.

Code (CSharp):

1. Shader "Custom/StrokeRecolor"
2. {
3.     Properties
4.     {
5.         _MainTex ("Main Texture", 2D) = "white" {}
6.         _Color ("Color", Color) = (1,1,1,1)
7.         _MinusColor ("Minus Color", Color)=(1,1,1,1)
8.     }
9.     SubShader
10.     {
11.         CGPROGRAM
12.         #pragma surface surf Lambert alpha
13.  
14.         struct Input
15.         {
16.             half2 uv_MainTex;
17.         };
18.  
19.         sampler2D _MainTex;
20.         fixed4 _Color;
21.         fixed4 _MinusColor;
22.  
23.         void surf(Input IN, inout SurfaceOutput o)
24.         {            
25.             fixed4 clr = _Color;
26.             clr /= _MinusColor;
27.             o.Albedo = clr;
28.             o.Alpha = tex2D(_MainTex, IN.uv_MainTex).a;
29.         }
30.         ENDCG
31.     }
32.     FallBack "Diffuse"
33. }

 

well, the line
#pragma surface surf Lambert alpha
adds lighting to the shader. I dont actually need it and I also need it to be more like 2d texture shader.
What do I need to change?

 

today I found out that all the time I was trying to get help for HLSL shader in ShaderGraph subforum.
My bed.
That is why I've got so many views but no one help.
By the way.
I took original unity sprite shader and make couple very simple changes. Now it works as I need

Code (CSharp):

1. Shader "Custom/StrokeRecolor"
2. {
3.     Properties
4.     {
5.         [PerRendererData] _MainTex ("Sprite Texture", 2D) = "white" {}
6.         _Color ("Tint", Color) = (1,1,1,1)
7.         [MaterialToggle] PixelSnap ("Pixel snap", Float) = 0
8.     }
9.  
10.     SubShader
11.     {
12.         Tags
13.         {
14.             "Queue"="Transparent"
15.             "IgnoreProjector"="True"
16.             "RenderType"="Transparent"
17.             "PreviewType"="Plane"
18.             "CanUseSpriteAtlas"="True"
19.         }
20.  
21.         Cull Off
22.         Lighting Off
23.         ZWrite Off
24.         Blend One OneMinusSrcAlpha
25.  
26.         Pass
27.         {
28.             CGPROGRAM
29.             #pragma vertex vert
30.             #pragma fragment frag
31.             #pragma multi_compile _ PIXELSNAP_ON
32.             #include "UnityCG.cginc"
33.  
34.             struct appdata_t
35.             {
36.                 float4 vertex : POSITION;
37.                 float4 color : COLOR;
38.                 float2 texcoord : TEXCOORD0;
39.             };
40.  
41.             struct v2f
42.             {
43.                 float4 vertex : SV_POSITION;
44.                 fixed4 color : COLOR;
45.                 float2 texcoord : TEXCOORD0;
46.             };
47.  
48.             fixed4 _Color;
49.  
50.             v2f vert(appdata_t IN)
51.             {
52.                 v2f OUT;
53.                 OUT.vertex = UnityObjectToClipPos(IN.vertex);
54.                 OUT.texcoord = IN.texcoord;
55.                 // OUT.color = IN.color * _Color;
56.                 OUT.color = _Color;
57.                 #ifdef PIXELSNAP_ON
58.                 OUT.vertex = UnityPixelSnap (OUT.vertex);
59.                 #endif
60.  
61.                 return OUT;
62.             }
63.  
64.             sampler2D _MainTex;
65.             sampler2D _AlphaTex;
66.             float _AlphaSplitEnabled;
67.  
68.             fixed4 SampleSpriteTexture(float2 uv)
69.             {
70.                 fixed4 color = tex2D(_MainTex, uv);
71.                 color.rgb = _Color.rgb;
72.                 #if UNITY_TE//XTURE_ALPHASPLIT_ALLOWED
73.                 if (_AlphaSplitEnabled)
74.                     color.a = tex2D (_AlphaTex, uv).r;
75.                 #endif //UNI//TY_TEXTURE_ALPHASPLIT_ALLOWED
76.  
77.                 return color;
78.             }
79.  
80.             fixed4 frag(v2f IN) : SV_Target
81.             {
82.                 fixed4 c = SampleSpriteTexture(IN.texcoord) * IN.color;
83.                 c.rgb *= c.a;
84.                 return c;
85.             }
86.             ENDCG
87.         }
88.     }
89. }

.