Shader "zzwater/ocean"
{
    Properties
    {
		_Direction("Animation direction", Vector) = (0,-1,0,0)
		_Speed("Animation Speed", Float) = 1
        _AmbientStrength("Ambient strength", Range(0, 1)) = 0.5

        //Color + Transparency
        [Toggle(_LIGHT_COLOR)] _LightColorOn("Main Light Color On", float) = 0
		[HDR]_BaseColor("Deep", Color) = (0, 0.44, 0.62, 1)
		[HDR]_ShallowColor("Shallow", Color) = (0.1, 0.9, 0.89, 0.02)
		[HDR]_HorizonColor("Horizon", Color) = (0.84, 1, 1, 0.15)
		_HorizonDistance("Horizon Distance", Range(0.01 , 32)) = 8
		_DepthVertical("View Depth", Range(0.01 , 16)) = 4
		_DepthHorizontal("Vertical Height Depth", Range(0.01 , 8)) = 1
		_EdgeFade("Edge Fade", Float) = 0.1
		_TranslucencyStrengthDirect("Translucency Strength (Direct)", Range(0 , 0.5)) = 0.05

        //Reflection + Refraction
        [Toggle(_REFRACTION)] _RefractionOn("Refraction On", float) = 0
		_ReflectionStrength("Reflection Strength", Range(0, 1)) = 1
		_ReflectionBlur("Probe Blur Factor", Range(0, 1)) = 0	
		_ReflectionFresnel("Reflection Curvature mask", Range(0.01, 20)) = 5	
		_RefractionStrength("Refraction Strength", Range(0, 1)) = 0.1

        //Intersection
        [Toggle(_INTERSECTION)] _IntersectionOn("Intersection On", float) = 0
		[NoScaleOffset][SingleLineTexture]_IntersectionNoise("Intersection noise", 2D) = "white" {}
		_IntersectionTiling("Noise Tiling", float) = 0.2
		_IntersectionColor("Foam Color", Color) = (1,1,1,1)
        _IntersectionSpeed("Intersection Speed Multi", Float) = 1
		_IntersectionClipping("Intersection Cutoff", Vector) = (0.5, 1, 0, 0)
		_IntersectionFalloff("Intersection Falloff", Range(0.01 , 1)) = 0.5
		_IntersectionLength("Intersection Distance", Range(0.01 , 5)) = 2

        // Wave foam
        [Toggle(_WAVE_FOAM)] _WaveFoamOn("Wave Foam On", float) = 0
        _WaveMesureMin("Wave Mesure Min", float) = 0
        _WaveMesureMax("Wave Mesure Max", float) = 0.3
        _WaveFoamClipping("Wave Cutoff", Vector) = (0.9, 1, 0, 0) 

        // Caustics
        [Toggle(_CAUSTICS)] _CausticsOn("Caustics On", float) = 0
        _CausticsBrightness("Brightness", Float) = 2
		_CausticsTiling("Tiling", Float) = 0.5
		_CausticsSpeed("Speed multiplier", Float) = 0.1
		_CausticsClipping("Caustics Cutoff (Y)dis (X)dep", Vector) = (6,0.3, 0, 0) 


        //waves
		_WaveSpeed("Wave Speed", Float) = 2
		_WaveHeight("Wave Height", Range(0 , 10)) = 0.25

		_WaveNormalStr("Normal Strength", Range(0 , 32)) = 0.5
		_WaveDistance("Distance", Range(0 , 1)) = 0.8
		_WaveFadeDistance("Wave fade distance (Start/End)", Vector) = (150, 300, 0, 0)

		_WaveSteepness("Steepness", Range(0 , 5)) = 0.1
		_WaveCount("Count", Range(1 , 5)) = 1
		_WaveDirection("Direction", vector) = (1,1,1,1)
    }

    SubShader
    {
		Tags 
        { 
            "RenderType" = "Transparent" 
            "RenderPipeline" = "UniversalPipeline" 
            "UniversalMaterialType" = "Lit"
            "IgnoreProjector" = "True"
            "Queue" = "Transparent+0" 
        }

        Pass
        {
            Name "ForwardLit"
			Tags { "LightMode"="UniversalForward" }
			
			Blend SrcAlpha OneMinusSrcAlpha, One OneMinusSrcAlpha
			ZWrite On 
			Cull Back
			ZTest LEqual
			ZClip On 

			HLSLPROGRAM

            #pragma target 3.0

			#pragma multi_compile_instancing
            #pragma instancing_options renderinglayer
            #include_with_pragmas "Packages/com.unity.render-pipelines.universal/ShaderLibrary/DOTS.hlsl"
			#include "Packages/zzwater/shaders/libs/URP.hlsl"
			#include "Packages/zzwater/shaders/libs/Common.hlsl"
			#include "Packages/zzwater/shaders/libs/Input.hlsl"
			#include "Packages/zzwater/shaders/libs/Waves.hlsl"

			#pragma shader_feature_local_fragment _LIGHT_COLOR
			#pragma shader_feature_local_fragment _REFRACTION
			#pragma shader_feature_local_fragment _INTERSECTION
			#pragma shader_feature_local_fragment _WAVE_FOAM
			#pragma shader_feature_local_fragment _CAUSTICS

			//Fog rendering (integration)
            #define UnityFog
            #pragma multi_compile_fog

			#pragma vertex LitPassVertex
			#include "Packages/zzwater/shaders/libs/Vertex.hlsl"

			#pragma fragment ForwardPassFragment
			#include "Packages/zzwater/shaders/libs/ForwardPass.hlsl"

            ENDHLSL

        }
    }
    FallBack "Diffuse"
}