Shader "Kawashirov/FPS"
{
	Properties { _DigitsTex ("Digits", 2D) = "white" {} }
	SubShader {
		Tags { "RenderType" = "Opaque" }

		Pass {
			CGPROGRAM
			#pragma vertex vert
			#pragma fragment frag
			
			#include "UnityCG.cginc"

			struct v2f { float2 uv : TEXCOORD0; float4 vertex : SV_POSITION; };

			sampler2D _DigitsTex;
			
			v2f vert (float4 vertex : POSITION, float2 uv : TEXCOORD0) { v2f o; o.vertex = UnityObjectToClipPos(vertex); o.uv = uv; return o; }
			
			fixed4 frag (v2f i) : SV_Target  {
				uint fps = round(unity_DeltaTime.w);
				half4 tex = tex2D(_DigitsTex, half2(frac(i.uv.x * 2) / 10 + half((i.uv.x > 0.5 ? fps : (fps / 10)) % 10) / 10, i.uv.y));
				half4 grad = lerp(half4(1,0,0,1), half4(0,1,0,1), unity_DeltaTime.w / 91.0h);
				return tex * grad; 
			}
			ENDCG
		}
	}
}