// Unity built-in shader source. Copyright (c) 2016 Unity Technologies. MIT license (see license.txt)

Shader "Silent/Filamented"
{
    Properties
    {
        _Color("Color", Color) = (1,1,1,1)
        _MainTex("Albedo", 2D) = "white" {}

        _Cutoff("Alpha Cutoff", Range(0.0, 1.0)) = 0.5

        _Glossiness("Smoothness", Range(0.0, 1.0)) = 0.5
        _GlossMapScale("Smoothness Scale", Range(0.0, 1.0)) = 1.0
        [Enum(Metallic Alpha,0,Albedo Alpha,1)] _SmoothnessTextureChannel ("Smoothness texture channel", Float) = 0

        [Gamma] _Metallic("Metallic", Range(0.0, 1.0)) = 0.0
        _MetallicGlossMap("Metallic", 2D) = "white" {}

        [ToggleOff] _SpecularHighlights("Specular Highlights", Float) = 1.0
        [ToggleOff] _GlossyReflections("Glossy Reflections", Float) = 1.0

        _BumpScale("Scale", Float) = 1.0
        [Normal] _BumpMap("Normal Map", 2D) = "bump" {}

        _Parallax ("Height Scale", Range (0.005, 0.25)) = 0.02
        _ParallaxMap ("Height Map", 2D) = "black" {}

        _OcclusionStrength("Strength", Range(0.0, 1.0)) = 1.0
        _OcclusionMap("Occlusion", 2D) = "white" {}

        _EmissionColor("Color", Color) = (0,0,0)
        _EmissionMap("Emission", 2D) = "white" {}

        _DetailMask("Detail Mask", 2D) = "white" {}

        _DetailAlbedoMap("Detail Albedo x2", 2D) = "grey" {}
        _DetailNormalMapScale("Scale", Float) = 1.0
        [Normal] _DetailNormalMap("Normal Map", 2D) = "bump" {}

        [Enum(UV0,0,UV1,1)] _UVSec ("UV Set for secondary textures", Float) = 0

        // New settings
        _ExposureOcclusion("Lightmap Occlusion Sensitivity", Range(0, 1)) = 0.2
        [Toggle(_LIGHTMAPSPECULAR)]_LightmapSpecular("Lightmap Specular", Range(0, 1)) = 1
        _LightmapSpecularMaxSmoothness("Lightmap Specular Max Smoothness", Range(0, 1)) = 1

        [Toggle(_NORMALMAP_SHADOW)]_NormalMapShadows("Normal Map Shadows", Range(0, 1)) = 0
        _BumpShadowHeightScale("Height Scale", Range(0, 1)) = 0.2
        _BumpShadowHardness("Shadow Hardness", Range(0, 100)) = 50
 
        _specularAntiAliasingVariance("Specular AA Variance",  Range(0, 1)) = 0.15
        _specularAntiAliasingThreshold("Specular AA Threshold", Range(0, 1)) = 0.25

        [KeywordEnum(None, SH, RNM, MonoSH)] _Bakery ("Bakery Mode", Int) = 0
            _RNM0("RNM0", 2D) = "black" {}
            _RNM1("RNM1", 2D) = "black" {}
            _RNM2("RNM2", 2D) = "black" {}

        [Toggle(_LTCGI)] _LTCGI ("LTCGI", Int) = 0

        [Enum(UnityEngine.Rendering.CullMode)]_CullMode("Cull Mode", Int) = 2
        [ToggleUI]_AlphaToMaskMode("Alpha to Coverage", Int) = 0

        [NonModifiableTextureData][HideInInspector] _DFG("DFG", 2D) = "white" {}

        // Blending state
        [HideInInspector] _Mode ("__mode", Float) = 0.0
        [HideInInspector] _SrcBlend ("__src", Float) = 1.0
        [HideInInspector] _DstBlend ("__dst", Float) = 0.0
        [HideInInspector] _ZWrite ("__zw", Float) = 1.0
    }

    CGINCLUDE
        // OcclusionMap is always defined
        #define MATERIAL_HAS_AMBIENT_OCCLUSION 
        // Use specular AA controls
        #define USE_GEOMETRIC_SPECULAR_AA
        // _DFG is present
        #define USE_DFG_LUT
    ENDCG

    SubShader
    {
        Tags { "RenderType"="Opaque" "PerformanceChecks"="False" "LTCGI" = "_LTCGI" }
        LOD 300

        Cull [_CullMode]

        // ------------------------------------------------------------------
        //  Base forward pass (directional light, emission, lightmaps, ...)
        Pass
        {
            Name "FORWARD"
            Tags { "LightMode" = "ForwardBase" }

            Blend [_SrcBlend] [_DstBlend]
            ZWrite [_ZWrite]
            AlphaToMask [_AlphaToMaskMode]

            CGPROGRAM
            #pragma target 4.0

            // -------------------------------------


            #pragma shader_feature_local _NORMALMAP
            #pragma shader_feature_local _ _ALPHATEST_ON _ALPHABLEND_ON _ALPHAPREMULTIPLY_ON
            #pragma shader_feature _EMISSION
            #pragma shader_feature_local _METALLICGLOSSMAP
            #pragma shader_feature_local _DETAIL_MULX2
            #pragma shader_feature_local _SMOOTHNESS_TEXTURE_ALBEDO_CHANNEL_A
            #pragma shader_feature_local _SPECULARHIGHLIGHTS_OFF
            #pragma shader_feature_local _GLOSSYREFLECTIONS_OFF
            #pragma shader_feature_local _PARALLAXMAP
            
            #pragma shader_feature_local _LIGHTMAPSPECULAR
            #pragma shader_feature_local _NORMALMAP_SHADOW
            #pragma shader_feature_local _ _BAKERY_RNM _BAKERY_SH _BAKERY_MONOSH
            #pragma shader_feature_local _LTCGI

            #pragma multi_compile_fwdbase
            #pragma multi_compile_fog
            #pragma multi_compile_instancing
            // Uncomment the following line to enable dithering LOD crossfade. Note: there are more in the file to uncomment for other passes.
            //#pragma multi_compile _ LOD_FADE_CROSSFADE

            #pragma vertex vertBase
            #pragma fragment fragBase
            #include "UnityStandardCoreForward.cginc"

            ENDCG
        }
        // ------------------------------------------------------------------
        //  Additive forward pass (one light per pass)
        Pass
        {
            Name "FORWARD_DELTA"
            Tags { "LightMode" = "ForwardAdd" }
            Blend [_SrcBlend] One
            Fog { Color (0,0,0,0) } // in additive pass fog should be black
            ZWrite Off
            ZTest LEqual
            AlphaToMask [_AlphaToMaskMode]

            CGPROGRAM
            #pragma target 4.0

            // -------------------------------------


            #pragma shader_feature_local _NORMALMAP
            #pragma shader_feature_local _ _ALPHATEST_ON _ALPHABLEND_ON _ALPHAPREMULTIPLY_ON
            #pragma shader_feature_local _METALLICGLOSSMAP
            #pragma shader_feature_local _SMOOTHNESS_TEXTURE_ALBEDO_CHANNEL_A
            #pragma shader_feature_local _SPECULARHIGHLIGHTS_OFF
            #pragma shader_feature_local _DETAIL_MULX2
            #pragma shader_feature_local _PARALLAXMAP

            #pragma shader_feature_local _NORMALMAP_SHADOW

            #pragma multi_compile_fwdadd_fullshadows
            #pragma multi_compile_fog
            #pragma multi_compile_instancing
            // Uncomment the following line to enable dithering LOD crossfade. Note: there are more in the file to uncomment for other passes.
            //#pragma multi_compile _ LOD_FADE_CROSSFADE

            #pragma vertex vertAdd
            #pragma fragment fragAdd
            #include "UnityStandardCoreForward.cginc"

            ENDCG
        }
        // ------------------------------------------------------------------
        //  Shadow rendering pass
        Pass {
            Name "ShadowCaster"
            Tags { "LightMode" = "ShadowCaster" }

            ZWrite On ZTest LEqual

            CGPROGRAM
            #pragma target 3.0

            // -------------------------------------


            #pragma shader_feature_local _ _ALPHATEST_ON _ALPHABLEND_ON _ALPHAPREMULTIPLY_ON
            #pragma shader_feature_local _METALLICGLOSSMAP
            #pragma shader_feature_local _SMOOTHNESS_TEXTURE_ALBEDO_CHANNEL_A
            #pragma shader_feature_local _PARALLAXMAP
            #pragma multi_compile_shadowcaster
            #pragma multi_compile_instancing
            // Uncomment the following line to enable dithering LOD crossfade. Note: there are more in the file to uncomment for other passes.
            //#pragma multi_compile _ LOD_FADE_CROSSFADE

            #pragma vertex vertShadowCaster
            #pragma fragment fragShadowCaster

            #include "UnityStandardShadow.cginc"

            ENDCG
        }

        // Deferred not implemented
        UsePass "Standard/DEFERRED"

        // Meta not implemented
        UsePass "Standard/META"

    }

    FallBack "VertexLit"
    CustomEditor "SilentTools.FilamentedStandardShaderGUI"
}