Shader "Unlit/vertex_color"{
    SubShader {
        Tags { "RenderType"="Opaque" }
        Lighting Off

        Pass {
            CGPROGRAM
            #pragma vertex vert
            #pragma fragment frag

            #include "UnityCG.cginc"

            struct appdata {
                float4 vertex : POSITION;
                fixed4 color : COLOR;
            };

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

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

            fixed4 frag (v2f i) : SV_Target {
                return i.color;
            }
            ENDCG
        }
    }
}