Demo 03 - Waves with plane

Shader "Custom/PlanToWave" {
    Properties {
        _Color ("Color", Color) = (0, 0, 0, 1)
        _Amplitude ("Amplitude", Range(0,4)) = 1.0
        _Movement ("Movement", Range(-100,100)) = 0
    }

    SubShader {
        Tags { "RenderType"="transparent" }

        Pass
        {
            Cull Off

            CGPROGRAM

            #pragma vertex vert
            #pragma fragment frag

            float4 _Color;
            float _Amplitude;
            float _Movement;

            struct vertexInput
            {
                float4 vertex : POSITION;
            };

            struct vertexOutput
            {
                float4 pos : SV_POSITION;
            };

            vertexOutput vert(vertexInput input)
            {
                float4x4 Matrice = _Object2World;
                vertexOutput output;

                float4 posWorld = mul(Matrice, input.vertex);

                float displacement = (cos(posWorld.y) + cos(posWorld.x + _Movement * _Time));
                posWorld.y = posWorld.y + _Amplitude * displacement;

                output.pos = mul(UNITY_MATRIX_VP, posWorld);
                return output;
            }

            float4 frag(vertexOutput input) : COLOR
            {
                return _Color;
            }
            ENDCG
        }
    }
    FallBack "Diffuse"
}