Vertex Shader Butterfly

Butterfly_ForWeb.shader

Shader "Unlit/Butterfly_ForWeb"{
	Properties{
		_MainTex ("Texture", 2D) = "white" {}
	}
	SubShader{
		Tags { "RenderType"="Opaque" }
		LOD 100
		Cull Off
		
		Pass{
			CGPROGRAM
			#pragma vertex vert
			#define PI 3.14
			#pragma fragment frag
			
			#include "UnityCG.cginc"

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

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

			sampler2D _MainTex;

			float4 _MainTex_ST;
			
			v2f vert (appdata v){
				v2f o;
				v.vertex.y += sin(_Time.w) * (sin(v.uv * PI)-1.0);
				o.vertex = UnityObjectToClipPos(v.vertex);
				o.uv = TRANSFORM_TEX(v.uv, _MainTex);
				return o;
			}
			
			fixed4 frag (v2f i) : SV_Target{
				// sample the texture
				fixed4 col = tex2D(_MainTex, i.uv);
				clip(col.a - 0.1);
				return col;
				}
			ENDCG
		}
	}
}