Color Tint shader for vector sprite

Unity Engine
1

Hello!

Unity 2020.2.7
Vector Graphics 2.0.0 preview 14

My shader works like this: if color alpha is 255 - I can tint any color.
If color alpha is 0 - the original color.
It works great if the .svg generated asset type is a textured sprite.
But if I switch to the generated asset type - vector sprite, my shader doesn’t work. How to fix it?
Thanks

Shader "Custom/TintSprite"
{
    Properties
    {
        [PerRendererData] _MainTex("Sprite Texture", 2D) = "white" {}
        _Color("Tint", Color) = (1,1,1,1)
        [MaterialToggle] PixelSnap("Pixel snap", Float) = 0
    }

        SubShader
        {
            Tags
            {
                "Queue" = "Transparent"
                "IgnoreProjector" = "True"
                "RenderType" = "Transparent"
                "PreviewType" = "Plane"
                "CanUseSpriteAtlas" = "True"
            }

            Cull Off
            Lighting Off
            ZWrite Off
            Fog { Mode Off }
            Blend One OneMinusSrcAlpha

            Pass
            {
            CGPROGRAM
                #pragma vertex vert
                #pragma fragment frag
                #pragma multi_compile DUMMY PIXELSNAP_ON
                #pragma multi_compile_instancing
                #include "UnityCG.cginc"

                struct appdata_t
                {
                    float4 vertex   : POSITION;
                    float4 color    : COLOR;
                    float2 texcoord : TEXCOORD0;
                };

                struct v2f
                {
                    float4 vertex   : SV_POSITION;
                    fixed4 color : COLOR;
                    half2 texcoord  : TEXCOORD0;
                };

                fixed4 _Color;

                v2f vert(appdata_t IN)
                {
                    v2f OUT;
                    OUT.vertex = UnityObjectToClipPos(IN.vertex);
                    OUT.texcoord = IN.texcoord;
                    OUT.color = IN.color * _Color;
                    #ifdef PIXELSNAP_ON
                    OUT.vertex = UnityPixelSnap(OUT.vertex);
                    #endif

                    return OUT;
                }

                sampler2D _MainTex;

                fixed4 frag(v2f IN) : SV_Target
                {
                    fixed4 c = tex2D(_MainTex, IN.texcoord);
                    fixed a = c.a;
                    if (c.a >= 0.1) {
                        c = c + (IN.color - c) * IN.color.a;
                        c.a = a;
                    }
                    c.rgb *= c.a;
                    return c;
                }
            ENDCG
            }
        }
}
2

Love this. Again and again finding needed questions with no answers within years

3

maybe vector sprite mode doesn’t use vertex colors?

4

Fixed this by using the Vertex Color instead of sampling the MainTex.

1 Like