CarmenSandiego/Assets/Shaders/Render Texture UI ZTest Always.shader

Shader "Carmen/Render Texture UI/Always On Top"
{
    Properties
    {
		_MainTex ("Logo Image", 2D) = "white" {}
        _Color ("Colour", Color) = (1.0, 1.0, 1.0, 1.0)
    }
    SubShader
    {
        Tags { "Queue"="Overlay" "RenderType"="Transparent" "CanUseSpriteAtlas"="True" }
        LOD 200

        Pass {
            Cull Back
            Lighting Off
            Blend SrcAlpha OneMinusSrcAlpha
            ZWrite Off
            ZTest Always

            CGPROGRAM
            #include "UnityCG.cginc"
			#pragma target 4.5
            #pragma vertex vert
            #pragma fragment frag

			UNITY_DECLARE_TEX2D(_MainTex);
            float4 _MainTex_ST;
            half4 _Color;


            struct Data
            {
                float4 vertex : POSITION;
                float2 uv : TEXCOORD0;
            };

            struct V2F
            {
                float4 position : SV_POSITION;
                float2 uv : TEXCOORD0;
            };


            V2F vert(Data v)
            {
                V2F o;
                o.position = UnityObjectToClipPos(v.vertex);
                o.uv = TRANSFORM_TEX(v.uv, _MainTex);
                return o;
            }

            fixed4 frag(V2F i) : SV_TARGET
            {
                return UNITY_SAMPLE_TEX2D(_MainTex, i.uv) * _Color;
            }
            ENDCG
        }
    }
    FallBack "Diffuse"
}