// Unity built-in shader source. Copyright (c) 2016 Unity Technologies. MIT license (see license.txt)
Shader "Hidden/TerrainEngine/Details/BillboardWavingDoublePass" // Has to override the internal shaders so named like this
{
    Properties 
    {
        _WavingTint ("Fade Color", Color) = (.7,.6,.5, 0)
        _MainTex ("Base (RGB) Alpha (A)", 2D) = "white" {}
        _WaveAndDistance ("Wave and distance", Vector) = (12, 3.6, 1, 1)
        _Cutoff ("Cutoff", float) = 0.5
    }
    SubShader 
    {
        Tags {"Queue" = "Geometry+200" "RenderType" = "GrassBillBoard" "IgnoreProjectors" = "True" "RenderPipeline" = "LightweightPipeline" }//"DisableBatching"="True"
        Cull Off
        LOD 200
        AlphaTest Greater [_Cutoff]
        ColorMask RGB

        Pass
        {
            HLSLPROGRAM
            // Required to compile gles 2.0 with standard srp library
            #pragma prefer_hlslcc gles
            #pragma exclude_renderers d3d11_9x
            #pragma target 2.0

            // -------------------------------------
            // Lightweight Pipeline keywords
            #pragma multi_compile _ _ADDITIONAL_LIGHTS
            #pragma multi_compile _ _VERTEX_LIGHTS
            #pragma multi_compile _ _MIXED_LIGHTING_SUBTRACTIVE
            #pragma multi_compile _ _SHADOWS_ENABLED

            // TODO: Enabled this when we have C# keyword stripping
            //#pragma multi_compile _ _LOCAL_SHADOWS_ENABLED

            // -------------------------------------
            // Unity defined keywords
            #pragma multi_compile _ DIRLIGHTMAP_COMBINED
            #pragma multi_compile _ LIGHTMAP_ON
            #pragma multi_compile_fog

            //--------------------------------------
            // GPU Instancing
            #pragma multi_compile_instancing

            #pragma vertex WavingGrassBillboardVert
            #pragma fragment LitPassFragmentGrass
            #define _ALPHATEST_ON


            #include "LWRP/ShaderLibrary/Terrain/InputSurfaceGrass.hlsl"
            #include "LWRP/ShaderLibrary/Terrain/LightweightPassLitGrass.hlsl"

            ENDHLSL
        }

        Pass
        {
            Tags{"LightMode" = "DepthOnly"}

            ZWrite On
            ColorMask 0
            Cull Off

            HLSLPROGRAM
            // Required to compile gles 2.0 with standard srp library
            #pragma prefer_hlslcc gles
            #pragma exclude_renderers d3d11_9x
            #pragma target 2.0

            #pragma vertex DepthOnlyVertex
            #pragma fragment DepthOnlyFragment

            // -------------------------------------
            // Material Keywords
            #define _ALPHATEST_ON
            #pragma shader_feature _GLOSSINESS_FROM_BASE_ALPHA

            //--------------------------------------
            // GPU Instancing
            #pragma multi_compile_instancing

            #include "LWRP/ShaderLibrary/Terrain/InputSurfaceGrass.hlsl"
            #include "LWRP/ShaderLibrary/Terrain/LightweightPassDepthOnlyGrass.hlsl"
            ENDHLSL
        }
    }
}