Shader Graph第一个_shadergraph surfaceoptions-优快云博客

本文链接：https://blog.youkuaiyun.com/FeiBin2013/article/details/86508519

由于Shader Forge在2018.3版本不可用，作者转向了Shader Graph。本文介绍了如何使用Shader Graph实现Fresnel+HighLight效果，并分享了查看和复制Shader源码的方法，需要注意代码中包含的LightWeight引用限制了其在非LWRP环境的应用。

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Shader Forge还是正式在2018.3不能使用了。。。

无奈之下只能开始使用Shader Graph。

第一个效果：

Fresnel + HighLight 提示

关于Shader源码的查看，CopyShader菜单就可以了，然后在VS中粘贴。

代码如下：有很多LightWeight的引用，不能在非LWRP环境中使用。

Shader "Unlit Master"
{
    Properties
    {

    }
    SubShader
    {
        Tags{ "RenderPipeline" = "LightweightPipeline"}
        Tags
        {
            "RenderPipeline"="HDRenderPipeline"
            "RenderType"="Opaque"
            "Queue"="Geometry+0"
        }
        Pass
        {
            Name "StandardUnlit"
            Tags{"LightMode" = "LightweightForward"}

            // Material options generated by graph

            Blend One Zero

            Cull Back

            ZTest LEqual

            ZWrite On

            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 shader_feature _SAMPLE_GI

            // -------------------------------------
            // 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 vert
            #pragma fragment frag

            // Defines generated by graph

            // Lighting include is needed because of GI
            #include "Packages/com.unity.render-pipelines.lightweight/ShaderLibrary/Core.hlsl"
            #include "Packages/com.unity.render-pipelines.lightweight/ShaderLibrary/Lighting.hlsl"
            #include "Packages/com.unity.render-pipelines.core/ShaderLibrary/Color.hlsl"
            #include "Packages/com.unity.render-pipelines.lightweight/ShaderLibrary/ShaderGraphFunctions.hlsl"
            #include "Packages/com.unity.render-pipelines.lightweight/Shaders/UnlitInput.hlsl"

            CBUFFER_START(UnityPerMaterial)
            CBUFFER_END


            struct VertexDescriptionInputs
            {
                float3 ObjectSpacePosition;
            };

            struct SurfaceDescriptionInputs
            {
            };


            struct VertexDescription
            {
                float3 Position;
            };

            VertexDescription PopulateVertexData(VertexDescriptionInputs IN)
            {
                VertexDescription description = (VertexDescription)0;
                description.Position = IN.ObjectSpacePosition;
                return description;
            }

            struct SurfaceDescription
            {
                float3 Color;
                float Alpha;
                float AlphaClipThreshold;
            };

            SurfaceDescription PopulateSurfaceData(SurfaceDescriptionInputs IN)
            {
                SurfaceDescription surface = (SurfaceDescription)0;
                surface.Color = IsGammaSpace() ? float3(1, 0.01415092, 0.01415092) : SRGBToLinear(float3(1, 0.01415092, 0.01415092));
                surface.Alpha = 1;
                surface.AlphaClipThreshold = 0;
                return surface;
            }

            struct GraphVertexInput
            {
                float4 vertex : POSITION;
                float3 normal : NORMAL;
                float4 tangent : TANGENT;
                float4 texcoord1 : TEXCOORD1;
                UNITY_VERTEX_INPUT_INSTANCE_ID
            };


            struct GraphVertexOutput
            {
                float4 position : POSITION;

                // Interpol