Shader "Custom/Base_Shader"
{
    Properties
    {
        _Cutoff("Alpha Cutoff", Range(0.0, 1.0)) = 0.5
        [Enum(UnityEngine.Rendering.CullMode)] _Cull("Cull Mode", Float) = 2.0
        [ToggleUI] _ReceiveShadows("Receive Shadows", Float) = 1.0
        
        [MainTexture] _BaseMap("Albedo", 2D) = "white" {}
        [MainColor] _BaseColor("Color", Color) = (1,1,1,1)

        [Normal] _BumpMap("Normal Map", 2D) = "bump" {}
        _BumpScale("Normal Scale", Float) = 1.0
        
        [NoScaleOffset] _MRAE("MRAE Map (Metallic (R) Roughness (G) AO (B) Emissive (A))", 2D) = "white" {}
        [Space(10)]
        _Metallic("Metallic Intensity", Range(0.0, 1.0)) = 0.0
        _MinSmoothness("MinRoughness Intensity", Range(0.0, 1.0)) = 0.0
        _MaxSmoothness("MaxRoghness Intensity", Range(0.0, 1.0)) = 1
        //[HideInInspector] _Smoothness("Smoothness Multiplier", Range(0.0, 1.0)) = 1.0
        _OcclusionStrength("Occlusion Strength", Range(0.0, 1.0)) = 1.0
        
        [Space(10)]
        [HDR]_EmissionColorA("Emissive Color A", Color) = (0,0,0)
        [HDR]_EmissionColorB("Emissive Color B", Color) = (1,1,1)
        _EmissionIntensity("Emissive Intensity", Range(0.0, 20.0)) = 0.0
        //[HideInInspector][HDR]_EmissionColor("Emission Color (Legacy)", Color) = (1,1,1)

        [Space(10)]
        [ToggleOff] _SpecularHighlights("Specular Highlights", Float) = 1.0
        [ToggleOff] _EnvironmentReflections("Environment Reflections", Float) = 1.0
        
        [Space(10)]
        // Editmode props
        [HideInInspector] _QueueOffset("Queue offset", Float) = 0.0
        [HideInInspector][NoScaleOffset]unity_Lightmaps("unity_Lightmaps", 2DArray) = "" {}
        [HideInInspector][NoScaleOffset]unity_LightmapsInd("unity_LightmapsInd", 2DArray) = "" {}
        [HideInInspector][NoScaleOffset]unity_ShadowMasks("unity_ShadowMasks", 2DArray) = "" {}
        
        [HideInInspector] _Surface("Surface Type", Float) = 0.0
    }

    SubShader
    {
        Tags
        {
            "RenderType" = "Opaque"
            "RenderPipeline" = "UniversalPipeline"
            "UniversalMaterialType" = "Lit"
            "IgnoreProjector" = "True"
        }
        LOD 300
        
        Pass
        {
            Name "ForwardLit"
            Tags
            {
                "LightMode" = "UniversalForward"
            }
            ZWrite On
            Cull[_Cull]

            HLSLPROGRAM
            #pragma target 4.5
            #pragma shader_feature_local _NORMALMAP
            #pragma shader_feature_local _RECEIVE_SHADOWS_OFF
            #pragma shader_feature_local_fragment _ALPHATEST_ON
            #pragma shader_feature_local_fragment _EMISSION
            #pragma shader_feature_local_fragment _SPECULARHIGHLIGHTS_OFF
            #pragma shader_feature_local_fragment _ENVIRONMENTREFLECTIONS_OFF
            #pragma shader_feature_local_fragment _SPECULAR_SETUP
            #pragma multi_compile _ _MAIN_LIGHT_SHADOWS _MAIN_LIGHT_SHADOWS_CASCADE _MAIN_LIGHT_SHADOWS_SCREEN
            #pragma multi_compile _ _ADDITIONAL_LIGHTS_VERTEX _ADDITIONAL_LIGHTS
            #pragma multi_compile _ EVALUATE_SH_MIXED EVALUATE_SH_VERTEX
            #pragma multi_compile_fragment _ _ADDITIONAL_LIGHT_SHADOWS
            #pragma multi_compile_fragment _ _REFLECTION_PROBE_BLENDING
            #pragma multi_compile_fragment _ _REFLECTION_PROBE_BOX_PROJECTION
            #pragma multi_compile_fragment _ _SHADOWS_SOFT _SHADOWS_SOFT_LOW
            #pragma multi_compile_fragment _ _LIGHT_COOKIES
            #pragma multi_compile _ _LIGHT_LAYERS
            #pragma multi_compile _ LIGHTMAP_SHADOW_MIXING
            #pragma multi_compile _ SHADOWS_SHADOWMASK
            #pragma multi_compile _ DIRLIGHTMAP_COMBINED
            #pragma multi_compile _ LIGHTMAP_ON
            #pragma multi_compile _ DYNAMICLIGHTMAP_ON
            #pragma multi_compile_fragment _ LOD_FADE_CROSSFADE
            #pragma multi_compile_fog
            #pragma multi_compile_instancing
            #pragma instancing_options renderinglayer
            #include_with_pragmas "Packages/com.unity.render-pipelines.core/ShaderLibrary/FoveatedRenderingKeywords.hlsl"
            #include_with_pragmas "Packages/com.unity.render-pipelines.universal/ShaderLibrary/RenderingLayers.hlsl"
            #include_with_pragmas "Packages/com.unity.render-pipelines.universal/ShaderLibrary/DOTS.hlsl"

            #pragma vertex LitPassVertex
            #pragma fragment LitPassFragment            
            #include "Assets\JGW\Art\Shader/CustomLitInput.hlsl"
            #include "Packages/com.unity.render-pipelines.universal/Shaders/LitForwardPass.hlsl"
        
            half4 LitPassFragment(Varyings input) : SV_Target
            {
                UNITY_SETUP_INSTANCE_ID(input);
                UNITY_SETUP_STEREO_EYE_INDEX_POST_VERTEX(input);

                SurfaceData surfaceData;
                InitializeStandardLitSurfaceData(input.uv, surfaceData);

                half4 mrae = SAMPLE_TEXTURE2D(_MRAE, sampler_MRAE, input.uv);
                surfaceData.metallic = saturate(mrae.r * _Metallic);
                surfaceData.smoothness = saturate(lerp(_MinSmoothness, _MaxSmoothness, mrae.g));
                surfaceData.occlusion = saturate(LerpWhiteTo(mrae.b, _OcclusionStrength));
                surfaceData.emission = lerp(_EmissionColorA.rgb, _EmissionColorB.rgb, mrae.a) * mrae.a * _EmissionIntensity;

                InputData inputData;
                InitializeInputData(input, surfaceData.normalTS, inputData);

                half4 color = UniversalFragmentPBR(inputData, surfaceData);

                color.rgb = MixFog(color.rgb, inputData.fogCoord);
                color.a = OutputAlpha(color.a, _Surface);

                return color;
            }
            ENDHLSL
        }

        Pass
        {
            Name "ShadowCaster"
            Tags
            {
                "LightMode" = "ShadowCaster"
            }
            ZWrite On
            ZTest LEqual
            ColorMask 0
            Cull[_Cull]

            HLSLPROGRAM
            #pragma target 4.5
            
            #pragma vertex ShadowPassVertex
            #pragma fragment ShadowPassFragment
            
            #pragma shader_feature_local _ALPHATEST_ON
            #pragma shader_feature_local_fragment _SMOOTHNESS_TEXTURE_ALBEDO_CHANNEL_A
            
            #pragma multi_compile_instancing
            #pragma multi_compile_fragment _ LOD_FADE_CROSSFADE
            #pragma multi_compile_vertex _ _CASTING_PUNCTUAL_LIGHT_SHADOW
            
            #include_with_pragmas "Packages/com.unity.render-pipelines.universal/ShaderLibrary/DOTS.hlsl"
            
            #include "Assets\JGW\Art\Shader/CustomLitInput.hlsl"
            #include "Packages/com.unity.render-pipelines.universal/Shaders/ShadowCasterPass.hlsl"
            ENDHLSL
        }

        Pass
        {
            Name "DepthOnly"
            Tags
            {
                "LightMode" = "DepthOnly"
            }
            ZWrite On
            ColorMask R
            Cull[_Cull]

            HLSLPROGRAM
            #pragma target 4.5
            
            #pragma vertex DepthOnlyVertex
            #pragma fragment DepthOnlyFragment
            
            #pragma shader_feature_local _ALPHATEST_ON
            #pragma shader_feature_local_fragment _SMOOTHNESS_TEXTURE_ALBEDO_CHANNEL_A
            
            #pragma multi_compile_fragment _ LOD_FADE_CROSSFADE
            #pragma multi_compile_instancing
            
            #include_with_pragmas "Packages/com.unity.render-pipelines.universal/ShaderLibrary/DOTS.hlsl"
            
            #include "Assets\JGW\Art\Shader/CustomLitInput.hlsl"
            #include "Packages/com.unity.render-pipelines.universal/Shaders/DepthOnlyPass.hlsl"
            ENDHLSL
        }
        
        Pass
        {
            Name "Meta"
            Tags
            {
                "LightMode" = "Meta"
            }

            Cull Off

            HLSLPROGRAM
            #pragma target 4.5
            
            #pragma vertex UniversalVertexMeta
            #pragma fragment UniversalFragmentMetaLit
            
            #pragma shader_feature EDITOR_VISUALIZATION
            #pragma shader_feature_local_fragment _EMISSION
            #pragma shader_feature_local_fragment _ALPHATEST_ON

            #include "Assets\JGW\Art\Shader/CustomLitInput.hlsl"
            #include "Packages/com.unity.render-pipelines.universal/Shaders/LitMetaPass.hlsl"
            
            ENDHLSL
        }

    }

    FallBack "Hidden/Universal Render Pipeline/FallbackError"
}