Shader "Custom/BasicVCShader" {
    Properties
    {
        _Color("Color", Color) = (1,1,1,1)
    }
    SubShader{
        Pass {
            CGPROGRAM
            #pragma vertex vert
            #pragma fragment frag
            #include "UnityCG.cginc"

            float4 _Color;

            // vertex input: position, color
            struct appdata {
                float4 vertex : POSITION;
                float4 color : COLOR;
            };

            struct v2f {
                float4 pos : SV_POSITION;
                float4 color : COLOR;
            };

            v2f vert(appdata v) {
                v2f o;
                o.pos = UnityObjectToClipPos(v.vertex);
                o.color = v.color;
                return o;
            }

            float4 frag(v2f i) : SV_Target{
                if (i.color.r >= 1.0 && i.color.g >= 1.0 && i.color.b >= 1.0) {
                    return _Color;
                }

                return i.color;
            }
            ENDCG
        }
    }
}