Shader "Custom/XZGrid"

{

Properties

{

_Color ("Color", Color) = (1,1,1,1)

_MainTex ("Albedo (RGB)", 2D) = "white" {}

_Glossiness ("Smoothness", Range(0,1)) = 0.5

_Metallic ("Metallic", Range(0,1)) = 0.0

_GridStep ("Grid size", Float) = 10

_GridWidth ("Grid width", Float) = 1

}

SubShader

{

Tags { "RenderType"="Opaque" }

LOD 200

CGPROGRAM

// Physically based Standard lighting model, and enable shadows on all light types

#pragma surface surf Standard fullforwardshadows

// Use shader model 3.0 target, to get nicer looking lighting

#pragma target 3.0

sampler2D _MainTex;

struct Input

{

float2 uv_MainTex;

float3 worldPos;

};

half _Glossiness;

half _Metallic;

fixed4 _Color;

float _GridStep;

float _GridWidth;

void surf (Input IN, inout SurfaceOutputStandard o) {

// Albedo comes from a texture tinted by color

fixed4 c = tex2D (_MainTex, IN.uv_MainTex) * _Color;

// grid overlay

float2 pos = IN.worldPos.xz / _GridStep;

float2 f = abs(frac(pos)-.5);

float2 df = fwidth(pos) * _GridWidth;

float2 g = smoothstep(-df ,df , f);

float grid = 1.0 - saturate(g.x * g.y);

c.rgb = lerp(c.rgb, float3(1,1,1), grid);

o.Albedo = c.rgb;

// Metallic and smoothness come from slider variables

o.Metallic = _Metallic;

o.Smoothness = _Glossiness;

o.Alpha = c.a;

}

ENDCG

}

FallBack "Diffuse"

}