👉关于作者
众所周知，人生是一个漫长的流程，不断克服困难，不断反思前进的过程。在这个过程中会产生很多对于人生的质疑和思考，于是我决定将自己的思考，经验和故事全部分享出来，以此寻找共鸣！！！
专注于Android/Unity和各种游戏开发技巧，以及各种资源分享（网站、工具、素材、源码、游戏等）
👉即将学会
Shader Graph可视化Shader编辑工具创作一个水面倒影效果，不需要写代码就能实现效果。
👉效果预看
网络异常，图片无法展示
|
👉背景
在某一个周末的傍晚，小芝突然找到小空。
🙎小芝：你看，你看，夕阳映射的晚霞特别美。
🙈小空：恩，确实。
🙎小芝：……你根本没有认真看，老敷衍怪了。你想想要是在海边倒映出来那多幸福啊。
🙈小空沉思：倒影，倒影，这个怎么能让她在Unity中搞起来呢？
🙎小芝：……，完了完了，又沉寂进去了。
👉案例环境
Unity 2020.3系列f1
Package Manager包管理器中确保安装了Shader Graph
思路：
- 利用另外一个相机捕捉画面，翻转后放到下面。
- 利用Shader Graph为画面添加水波效果。
👉实践过程
首先建立一个WaterShadow的文件夹，以下创建全部在此文件夹下。
右键在里面创建一个Render Texture（渲染器纹理）起名叫做Water Render，尺寸可以看着效果对应着改。
在场景中创建一个Camera（相机），改名为WaterCamera，相机属性和Main Camera（主相机）相同，不同的是摄像的内容是你想要映射的内容。稍微自己调下位置即可。
网络异常，图片无法展示
|
重点——指定WaterCamera的Output Texture为刚才创建的Water Render。原理：将相机摄入的内容渲染到Water Render中，将这个Render借住其他组件在场景中展示出来即可。
网络异常，图片无法展示
|
创建一个Square（右键-创建-2D-Sprites中），并且拖拽到场景中，改名为WaterSquare，然后调整合适的位置。
网络异常，图片无法展示
|
创建一个Shader（右键-Shader-URP-Sprite Unlit Shader），改名为WaterShader，双击就能打开它
网络异常，图片无法展示
|
网络异常，图片无法展示
|
超级重点
在这里右键我们可以创建节点Node（有各种各样的类型）
为了在外部能够随时更改里面的内容，我们先创建一个Texture2D变量，然后将变量拖拽到舞台中，接着创建一个Sample Texture 2D节点，最后将变量节点指向此节点的Texture
网络异常，图片无法展示
|
我们想要先预览一下效果，在WaterShadow文件夹中创建材质Material，改名为WaterMaterial，然后将Shader赋给这个Material一种是直接拖拽WaterShader到WaterMaterial上，一种是在WaterMaterial右侧选择，然后我们将WaterMaterial拖拽赋值给WaterSquare（直接拖拽到场景中赋值即可），接着你就会看到效果啦。
这种效果我们还并不满足，我们要继续往下优化，将内容翻转，所有需要创建Tiling And Offset翻转节点。
接着运行查看发现很像水面的效果了。但这还不够逼真，我们需要模拟出水面的波纹效果。那么我们就需要去继续添加噪点的节点Simple Noise。
这时候还没够，这时候还是静态的，我们需要动态的，那么我们就需要利用时间的变化来动起来（创建Time节点）
经过各种连接后，我们创建了下面一个可视化的Shader。
网络异常，图片无法展示
|
我们看看运行后的效果：
网络异常，图片无法展示
|
最后我们附上代码的Shader。文末有想项目源码下载地址。
Shader "WaterShader" { Properties { [NoScaleOffset]Texture2D_40d3e1ffef7f43f6b3648f291bb5974d("WaterTexture", 2D) = "white" {} Vector1_3b055a08b82546ffbbe80087a02fe9cb("Speed", Float) = 0.2 Vector1_23db7fea7a93488a82f726fa778690e9("Strength", Float) = 0.02 Color_cfca9819e86340599cd882083808e8c0("Color", Color) = (0.4185208, 0.8962264, 0.8486329, 0.5019608) [HideInInspector][NoScaleOffset]unity_Lightmaps("unity_Lightmaps", 2DArray) = "" {} [HideInInspector][NoScaleOffset]unity_LightmapsInd("unity_LightmapsInd", 2DArray) = "" {} [HideInInspector][NoScaleOffset]unity_ShadowMasks("unity_ShadowMasks", 2DArray) = "" {} } SubShader { Tags { "RenderPipeline"="UniversalPipeline" "RenderType"="Transparent" "UniversalMaterialType" = "Unlit" "Queue"="Transparent" } Pass { Name "Sprite Unlit" Tags { "LightMode" = "Universal2D" } // Render State Cull Off Blend SrcAlpha OneMinusSrcAlpha, One OneMinusSrcAlpha ZTest LEqual ZWrite Off // Debug // <None> // -------------------------------------------------- // Pass HLSLPROGRAM // Pragmas #pragma target 2.0 #pragma exclude_renderers d3d11_9x #pragma vertex vert #pragma fragment frag // DotsInstancingOptions: <None> // HybridV1InjectedBuiltinProperties: <None> // Keywords // PassKeywords: <None> // GraphKeywords: <None> // Defines #define _SURFACE_TYPE_TRANSPARENT 1 #define ATTRIBUTES_NEED_NORMAL #define ATTRIBUTES_NEED_TANGENT #define ATTRIBUTES_NEED_TEXCOORD0 #define ATTRIBUTES_NEED_COLOR #define VARYINGS_NEED_TEXCOORD0 #define VARYINGS_NEED_COLOR #define FEATURES_GRAPH_VERTEX /* WARNING: $splice Could not find named fragment 'PassInstancing' */ #define SHADERPASS SHADERPASS_SPRITEUNLIT /* WARNING: $splice Could not find named fragment 'DotsInstancingVars' */ // Includes #include "Packages/com.unity.render-pipelines.core/ShaderLibrary/Color.hlsl" #include "Packages/com.unity.render-pipelines.core/ShaderLibrary/Texture.hlsl" #include "Packages/com.unity.render-pipelines.universal/ShaderLibrary/Core.hlsl" #include "Packages/com.unity.render-pipelines.universal/ShaderLibrary/Lighting.hlsl" #include "Packages/com.unity.render-pipelines.core/ShaderLibrary/TextureStack.hlsl" #include "Packages/com.unity.render-pipelines.universal/ShaderLibrary/ShaderGraphFunctions.hlsl" // -------------------------------------------------- // Structs and Packing struct Attributes { float3 positionOS : POSITION; float3 normalOS : NORMAL; float4 tangentOS : TANGENT; float4 uv0 : TEXCOORD0; float4 color : COLOR; #if UNITY_ANY_INSTANCING_ENABLED uint instanceID : INSTANCEID_SEMANTIC; #endif }; struct Varyings { float4 positionCS : SV_POSITION; float4 texCoord0; float4 color; #if UNITY_ANY_INSTANCING_ENABLED uint instanceID : CUSTOM_INSTANCE_ID; #endif #if (defined(UNITY_STEREO_MULTIVIEW_ENABLED)) || (defined(UNITY_STEREO_INSTANCING_ENABLED) && (defined(SHADER_API_GLES3) || defined(SHADER_API_GLCORE))) uint stereoTargetEyeIndexAsBlendIdx0 : BLENDINDICES0; #endif #if (defined(UNITY_STEREO_INSTANCING_ENABLED)) uint stereoTargetEyeIndexAsRTArrayIdx : SV_RenderTargetArrayIndex; #endif #if defined(SHADER_STAGE_FRAGMENT) && defined(VARYINGS_NEED_CULLFACE) FRONT_FACE_TYPE cullFace : FRONT_FACE_SEMANTIC; #endif }; struct SurfaceDescriptionInputs { float4 uv0; float3 TimeParameters; }; struct VertexDescriptionInputs { float3 ObjectSpaceNormal; float3 ObjectSpaceTangent; float3 ObjectSpacePosition; }; struct PackedVaryings { float4 positionCS : SV_POSITION; float4 interp0 : TEXCOORD0; float4 interp1 : TEXCOORD1; #if UNITY_ANY_INSTANCING_ENABLED uint instanceID : CUSTOM_INSTANCE_ID; #endif #if (defined(UNITY_STEREO_MULTIVIEW_ENABLED)) || (defined(UNITY_STEREO_INSTANCING_ENABLED) && (defined(SHADER_API_GLES3) || defined(SHADER_API_GLCORE))) uint stereoTargetEyeIndexAsBlendIdx0 : BLENDINDICES0; #endif #if (defined(UNITY_STEREO_INSTANCING_ENABLED)) uint stereoTargetEyeIndexAsRTArrayIdx : SV_RenderTargetArrayIndex; #endif #if defined(SHADER_STAGE_FRAGMENT) && defined(VARYINGS_NEED_CULLFACE) FRONT_FACE_TYPE cullFace : FRONT_FACE_SEMANTIC; #endif }; PackedVaryings PackVaryings (Varyings input) { PackedVaryings output; output.positionCS = input.positionCS; output.interp0.xyzw = input.texCoord0; output.interp1.xyzw = input.color; #if UNITY_ANY_INSTANCING_ENABLED output.instanceID = input.instanceID; #endif #if (defined(UNITY_STEREO_MULTIVIEW_ENABLED)) || (defined(UNITY_STEREO_INSTANCING_ENABLED) && (defined(SHADER_API_GLES3) || defined(SHADER_API_GLCORE))) output.stereoTargetEyeIndexAsBlendIdx0 = input.stereoTargetEyeIndexAsBlendIdx0; #endif #if (defined(UNITY_STEREO_INSTANCING_ENABLED)) output.stereoTargetEyeIndexAsRTArrayIdx = input.stereoTargetEyeIndexAsRTArrayIdx; #endif #if defined(SHADER_STAGE_FRAGMENT) && defined(VARYINGS_NEED_CULLFACE) output.cullFace = input.cullFace; #endif return output; } Varyings UnpackVaryings (PackedVaryings input) { Varyings output; output.positionCS = input.positionCS; output.texCoord0 = input.interp0.xyzw; output.color = input.interp1.xyzw; #if UNITY_ANY_INSTANCING_ENABLED output.instanceID = input.instanceID; #endif #if (defined(UNITY_STEREO_MULTIVIEW_ENABLED)) || (defined(UNITY_STEREO_INSTANCING_ENABLED) && (defined(SHADER_API_GLES3) || defined(SHADER_API_GLCORE))) output.stereoTargetEyeIndexAsBlendIdx0 = input.stereoTargetEyeIndexAsBlendIdx0; #endif #if (defined(UNITY_STEREO_INSTANCING_ENABLED)) output.stereoTargetEyeIndexAsRTArrayIdx = input.stereoTargetEyeIndexAsRTArrayIdx; #endif #if defined(SHADER_STAGE_FRAGMENT) && defined(VARYINGS_NEED_CULLFACE) output.cullFace = input.cullFace; #endif return output; } // -------------------------------------------------- // Graph // Graph Properties CBUFFER_START(UnityPerMaterial) float4 Texture2D_40d3e1ffef7f43f6b3648f291bb5974d_TexelSize; float Vector1_3b055a08b82546ffbbe80087a02fe9cb; float Vector1_23db7fea7a93488a82f726fa778690e9; float4 Color_cfca9819e86340599cd882083808e8c0; CBUFFER_END // Object and Global properties SAMPLER(SamplerState_Linear_Repeat); TEXTURE2D(Texture2D_40d3e1ffef7f43f6b3648f291bb5974d); SAMPLER(samplerTexture2D_40d3e1ffef7f43f6b3648f291bb5974d); // Graph Functions float2 Unity_GradientNoise_Dir_float(float2 p) { // Permutation and hashing used in webgl-nosie goo.gl/pX7HtC p = p % 289; // need full precision, otherwise half overflows when p > 1 float x = float(34 * p.x + 1) * p.x % 289 + p.y; x = (34 * x + 1) * x % 289; x = frac(x / 41) * 2 - 1; return normalize(float2(x - floor(x + 0.5), abs(x) - 0.5)); } void Unity_GradientNoise_float(float2 UV, float Scale, out float Out) { float2 p = UV * Scale; float2 ip = floor(p); float2 fp = frac(p); float d00 = dot(Unity_GradientNoise_Dir_float(ip), fp); float d01 = dot(Unity_GradientNoise_Dir_float(ip + float2(0, 1)), fp - float2(0, 1)); float d10 = dot(Unity_GradientNoise_Dir_float(ip + float2(1, 0)), fp - float2(1, 0)); float d11 = dot(Unity_GradientNoise_Dir_float(ip + float2(1, 1)), fp - float2(1, 1)); fp = fp * fp * fp * (fp * (fp * 6 - 15) + 10); Out = lerp(lerp(d00, d01, fp.y), lerp(d10, d11, fp.y), fp.x) + 0.5; } void Unity_Multiply_float(float A, float B, out float Out) { Out = A * B; } void Unity_Add_float(float A, float B, out float Out) { Out = A + B; } inline float Unity_SimpleNoise_RandomValue_float (float2 uv) { return frac(sin(dot(uv, float2(12.9898, 78.233)))*43758.5453); } inline float Unity_SimpleNnoise_Interpolate_float (float a, float b, float t) { return (1.0-t)*a + (t*b); } inline float Unity_SimpleNoise_ValueNoise_float (float2 uv) { float2 i = floor(uv); float2 f = frac(uv); f = f * f * (3.0 - 2.0 * f); uv = abs(frac(uv) - 0.5); float2 c0 = i + float2(0.0, 0.0); float2 c1 = i + float2(1.0, 0.0); float2 c2 = i + float2(0.0, 1.0); float2 c3 = i + float2(1.0, 1.0); float r0 = Unity_SimpleNoise_RandomValue_float(c0); float r1 = Unity_SimpleNoise_RandomValue_float(c1); float r2 = Unity_SimpleNoise_RandomValue_float(c2); float r3 = Unity_SimpleNoise_RandomValue_float(c3); float bottomOfGrid = Unity_SimpleNnoise_Interpolate_float(r0, r1, f.x); float topOfGrid = Unity_SimpleNnoise_Interpolate_float(r2, r3, f.x); float t = Unity_SimpleNnoise_Interpolate_float(bottomOfGrid, topOfGrid, f.y); return t; } void Unity_SimpleNoise_float(float2 UV, float Scale, out float Out) { float t = 0.0; float freq = pow(2.0, float(0)); float amp = pow(0.5, float(3-0)); t += Unity_SimpleNoise_ValueNoise_float(float2(UV.x*Scale/freq, UV.y*Scale/freq))*amp; freq = pow(2.0, float(1)); amp = pow(0.5, float(3-1)); t += Unity_SimpleNoise_ValueNoise_float(float2(UV.x*Scale/freq, UV.y*Scale/freq))*amp; freq = pow(2.0, float(2)); amp = pow(0.5, float(3-2)); t += Unity_SimpleNoise_ValueNoise_float(float2(UV.x*Scale/freq, UV.y*Scale/freq))*amp; Out = t; } void Unity_TilingAndOffset_float(float2 UV, float2 Tiling, float2 Offset, out float2 Out) { Out = UV * Tiling + Offset; } void Unity_Multiply_float(float4 A, float4 B, out float4 Out) { Out = A * B; } // Graph Vertex struct VertexDescription { float3 Position; float3 Normal; float3 Tangent; }; VertexDescription VertexDescriptionFunction(VertexDescriptionInputs IN) { VertexDescription description = (VertexDescription)0; description.Position = IN.ObjectSpacePosition; description.Normal = IN.ObjectSpaceNormal; description.Tangent = IN.ObjectSpaceTangent; return description; } // Graph Pixel struct SurfaceDescription { float3 BaseColor; float Alpha; }; SurfaceDescription SurfaceDescriptionFunction(SurfaceDescriptionInputs IN) { SurfaceDescription surface = (SurfaceDescription)0; UnityTexture2D _Property_5f96fa6b31874c7c8f49a5ba4c802ea1_Out_0 = UnityBuildTexture2DStructNoScale(Texture2D_40d3e1ffef7f43f6b3648f291bb5974d); float _Property_e2b4dcb7085e4752ace7d623eaa848a5_Out_0 = Vector1_23db7fea7a93488a82f726fa778690e9; float _GradientNoise_0295ca2f6ca341b1ac796ec73bf2385e_Out_2; Unity_GradientNoise_float(IN.uv0.xy, 3, _GradientNoise_0295ca2f6ca341b1ac796ec73bf2385e_Out_2); float _Property_7166f06b49d84545891345939cacb632_Out_0 = Vector1_3b055a08b82546ffbbe80087a02fe9cb; float _Multiply_bbf027acfdbb41ccaa57e62650292da4_Out_2; Unity_Multiply_float(_Property_7166f06b49d84545891345939cacb632_Out_0, IN.TimeParameters.x, _Multiply_bbf027acfdbb41ccaa57e62650292da4_Out_2); float _Add_31381d66d83848d381412ee3af768cad_Out_2; Unity_Add_float(_GradientNoise_0295ca2f6ca341b1ac796ec73bf2385e_Out_2, _Multiply_bbf027acfdbb41ccaa57e62650292da4_Out_2, _Add_31381d66d83848d381412ee3af768cad_Out_2); float _SimpleNoise_634cb24c606344d28b5e7c670c09ba7a_Out_2; Unity_SimpleNoise_float((_Add_31381d66d83848d381412ee3af768cad_Out_2.xx), 50, _SimpleNoise_634cb24c606344d28b5e7c670c09ba7a_Out_2); float _Multiply_8c1af9eb25a14ad7910d7c5737106dba_Out_2; Unity_Multiply_float(_Property_e2b4dcb7085e4752ace7d623eaa848a5_Out_0, _SimpleNoise_634cb24c606344d28b5e7c670c09ba7a_Out_2, _Multiply_8c1af9eb25a14ad7910d7c5737106dba_Out_2); float2 _Vector2_6686572d44b148c3bd43ea00a7ee71d6_Out_0 = float2(_Multiply_8c1af9eb25a14ad7910d7c5737106dba_Out_2, 1); float2 _TilingAndOffset_80aee777cdc84f93b09a9f58f7cd8a21_Out_3; Unity_TilingAndOffset_float(IN.uv0.xy, float2 (1, -1), _Vector2_6686572d44b148c3bd43ea00a7ee71d6_Out_0, _TilingAndOffset_80aee777cdc84f93b09a9f58f7cd8a21_Out_3); float4 _SampleTexture2D_a940191ef9bb4c11a83d593387dc04f9_RGBA_0 = SAMPLE_TEXTURE2D(_Property_5f96fa6b31874c7c8f49a5ba4c802ea1_Out_0.tex, _Property_5f96fa6b31874c7c8f49a5ba4c802ea1_Out_0.samplerstate, _TilingAndOffset_80aee777cdc84f93b09a9f58f7cd8a21_Out_3); float _SampleTexture2D_a940191ef9bb4c11a83d593387dc04f9_R_4 = _SampleTexture2D_a940191ef9bb4c11a83d593387dc04f9_RGBA_0.r; float _SampleTexture2D_a940191ef9bb4c11a83d593387dc04f9_G_5 = _SampleTexture2D_a940191ef9bb4c11a83d593387dc04f9_RGBA_0.g; float _SampleTexture2D_a940191ef9bb4c11a83d593387dc04f9_B_6 = _SampleTexture2D_a940191ef9bb4c11a83d593387dc04f9_RGBA_0.b; float _SampleTexture2D_a940191ef9bb4c11a83d593387dc04f9_A_7 = _SampleTexture2D_a940191ef9bb4c11a83d593387dc04f9_RGBA_0.a; float4 _Property_cc5ba6d85d044fb894405bde6f11b58c_Out_0 = Color_cfca9819e86340599cd882083808e8c0; float4 _Multiply_a29ff5ef4d7049d2bb4da2beabad978e_Out_2; Unity_Multiply_float(_SampleTexture2D_a940191ef9bb4c11a83d593387dc04f9_RGBA_0, _Property_cc5ba6d85d044fb894405bde6f11b58c_Out_0, _Multiply_a29ff5ef4d7049d2bb4da2beabad978e_Out_2); surface.BaseColor = (_Multiply_a29ff5ef4d7049d2bb4da2beabad978e_Out_2.xyz); surface.Alpha = 1; return surface; } // -------------------------------------------------- // Build Graph Inputs VertexDescriptionInputs BuildVertexDescriptionInputs(Attributes input) { VertexDescriptionInputs output; ZERO_INITIALIZE(VertexDescriptionInputs, output); output.ObjectSpaceNormal = input.normalOS; output.ObjectSpaceTangent = input.tangentOS.xyz; output.ObjectSpacePosition = input.positionOS; return output; } SurfaceDescriptionInputs BuildSurfaceDescriptionInputs(Varyings input) { SurfaceDescriptionInputs output; ZERO_INITIALIZE(SurfaceDescriptionInputs, output); output.uv0 = input.texCoord0; output.TimeParameters = _TimeParameters.xyz; // This is mainly for LW as HD overwrite this value #if defined(SHADER_STAGE_FRAGMENT) && defined(VARYINGS_NEED_CULLFACE) #define BUILD_SURFACE_DESCRIPTION_INPUTS_OUTPUT_FACESIGN output.FaceSign = IS_FRONT_VFACE(input.cullFace, true, false); #else #define BUILD_SURFACE_DESCRIPTION_INPUTS_OUTPUT_FACESIGN #endif #undef BUILD_SURFACE_DESCRIPTION_INPUTS_OUTPUT_FACESIGN return output; } // -------------------------------------------------- // Main #include "Packages/com.unity.render-pipelines.universal/Editor/ShaderGraph/Includes/ShaderPass.hlsl" #include "Packages/com.unity.render-pipelines.universal/Editor/ShaderGraph/Includes/Varyings.hlsl" #include "Packages/com.unity.render-pipelines.universal/Editor/ShaderGraph/Includes/SpriteUnlitPass.hlsl" ENDHLSL } Pass { Name "Sprite Unlit" Tags { "LightMode" = "UniversalForward" } // Render State Cull Off Blend SrcAlpha OneMinusSrcAlpha, One OneMinusSrcAlpha ZTest LEqual ZWrite Off // Debug // <None> // -------------------------------------------------- // Pass HLSLPROGRAM // Pragmas #pragma target 2.0 #pragma exclude_renderers d3d11_9x #pragma vertex vert #pragma fragment frag // DotsInstancingOptions: <None> // HybridV1InjectedBuiltinProperties: <None> // Keywords // PassKeywords: <None> // GraphKeywords: <None> // Defines #define _SURFACE_TYPE_TRANSPARENT 1 #define ATTRIBUTES_NEED_NORMAL #define ATTRIBUTES_NEED_TANGENT #define ATTRIBUTES_NEED_TEXCOORD0 #define ATTRIBUTES_NEED_COLOR #define VARYINGS_NEED_TEXCOORD0 #define VARYINGS_NEED_COLOR #define FEATURES_GRAPH_VERTEX /* WARNING: $splice Could not find named fragment 'PassInstancing' */ #define SHADERPASS SHADERPASS_SPRITEFORWARD /* WARNING: $splice Could not find named fragment 'DotsInstancingVars' */ // Includes #include "Packages/com.unity.render-pipelines.core/ShaderLibrary/Color.hlsl" #include "Packages/com.unity.render-pipelines.core/ShaderLibrary/Texture.hlsl" #include "Packages/com.unity.render-pipelines.universal/ShaderLibrary/Core.hlsl" #include "Packages/com.unity.render-pipelines.universal/ShaderLibrary/Lighting.hlsl" #include "Packages/com.unity.render-pipelines.core/ShaderLibrary/TextureStack.hlsl" #include "Packages/com.unity.render-pipelines.universal/ShaderLibrary/ShaderGraphFunctions.hlsl" // -------------------------------------------------- // Structs and Packing struct Attributes { float3 positionOS : POSITION; float3 normalOS : NORMAL; float4 tangentOS : TANGENT; float4 uv0 : TEXCOORD0; float4 color : COLOR; #if UNITY_ANY_INSTANCING_ENABLED uint instanceID : INSTANCEID_SEMANTIC; #endif }; struct Varyings { float4 positionCS : SV_POSITION; float4 texCoord0; float4 color; #if UNITY_ANY_INSTANCING_ENABLED uint instanceID : CUSTOM_INSTANCE_ID; #endif #if (defined(UNITY_STEREO_MULTIVIEW_ENABLED)) || (defined(UNITY_STEREO_INSTANCING_ENABLED) && (defined(SHADER_API_GLES3) || defined(SHADER_API_GLCORE))) uint stereoTargetEyeIndexAsBlendIdx0 : BLENDINDICES0; #endif #if (defined(UNITY_STEREO_INSTANCING_ENABLED)) uint stereoTargetEyeIndexAsRTArrayIdx : SV_RenderTargetArrayIndex; #endif #if defined(SHADER_STAGE_FRAGMENT) && defined(VARYINGS_NEED_CULLFACE) FRONT_FACE_TYPE cullFace : FRONT_FACE_SEMANTIC; #endif }; struct SurfaceDescriptionInputs { float4 uv0; float3 TimeParameters; }; struct VertexDescriptionInputs { float3 ObjectSpaceNormal; float3 ObjectSpaceTangent; float3 ObjectSpacePosition; }; struct PackedVaryings { float4 positionCS : SV_POSITION; float4 interp0 : TEXCOORD0; float4 interp1 : TEXCOORD1; #if UNITY_ANY_INSTANCING_ENABLED uint instanceID : CUSTOM_INSTANCE_ID; #endif #if (defined(UNITY_STEREO_MULTIVIEW_ENABLED)) || (defined(UNITY_STEREO_INSTANCING_ENABLED) && (defined(SHADER_API_GLES3) || defined(SHADER_API_GLCORE))) uint stereoTargetEyeIndexAsBlendIdx0 : BLENDINDICES0; #endif #if (defined(UNITY_STEREO_INSTANCING_ENABLED)) uint stereoTargetEyeIndexAsRTArrayIdx : SV_RenderTargetArrayIndex; #endif #if defined(SHADER_STAGE_FRAGMENT) && defined(VARYINGS_NEED_CULLFACE) FRONT_FACE_TYPE cullFace : FRONT_FACE_SEMANTIC; #endif }; PackedVaryings PackVaryings (Varyings input) { PackedVaryings output; output.positionCS = input.positionCS; output.interp0.xyzw = input.texCoord0; output.interp1.xyzw = input.color; #if UNITY_ANY_INSTANCING_ENABLED output.instanceID = input.instanceID; #endif #if (defined(UNITY_STEREO_MULTIVIEW_ENABLED)) || (defined(UNITY_STEREO_INSTANCING_ENABLED) && (defined(SHADER_API_GLES3) || defined(SHADER_API_GLCORE))) output.stereoTargetEyeIndexAsBlendIdx0 = input.stereoTargetEyeIndexAsBlendIdx0; #endif #if (defined(UNITY_STEREO_INSTANCING_ENABLED)) output.stereoTargetEyeIndexAsRTArrayIdx = input.stereoTargetEyeIndexAsRTArrayIdx; #endif #if defined(SHADER_STAGE_FRAGMENT) && defined(VARYINGS_NEED_CULLFACE) output.cullFace = input.cullFace; #endif return output; } Varyings UnpackVaryings (PackedVaryings input) { Varyings output; output.positionCS = input.positionCS; output.texCoord0 = input.interp0.xyzw; output.color = input.interp1.xyzw; #if UNITY_ANY_INSTANCING_ENABLED output.instanceID = input.instanceID; #endif #if (defined(UNITY_STEREO_MULTIVIEW_ENABLED)) || (defined(UNITY_STEREO_INSTANCING_ENABLED) && (defined(SHADER_API_GLES3) || defined(SHADER_API_GLCORE))) output.stereoTargetEyeIndexAsBlendIdx0 = input.stereoTargetEyeIndexAsBlendIdx0; #endif #if (defined(UNITY_STEREO_INSTANCING_ENABLED)) output.stereoTargetEyeIndexAsRTArrayIdx = input.stereoTargetEyeIndexAsRTArrayIdx; #endif #if defined(SHADER_STAGE_FRAGMENT) && defined(VARYINGS_NEED_CULLFACE) output.cullFace = input.cullFace; #endif return output; } // -------------------------------------------------- // Graph // Graph Properties CBUFFER_START(UnityPerMaterial) float4 Texture2D_40d3e1ffef7f43f6b3648f291bb5974d_TexelSize; float Vector1_3b055a08b82546ffbbe80087a02fe9cb; float Vector1_23db7fea7a93488a82f726fa778690e9; float4 Color_cfca9819e86340599cd882083808e8c0; CBUFFER_END // Object and Global properties SAMPLER(SamplerState_Linear_Repeat); TEXTURE2D(Texture2D_40d3e1ffef7f43f6b3648f291bb5974d); SAMPLER(samplerTexture2D_40d3e1ffef7f43f6b3648f291bb5974d); // Graph Functions float2 Unity_GradientNoise_Dir_float(float2 p) { // Permutation and hashing used in webgl-nosie goo.gl/pX7HtC p = p % 289; // need full precision, otherwise half overflows when p > 1 float x = float(34 * p.x + 1) * p.x % 289 + p.y; x = (34 * x + 1) * x % 289; x = frac(x / 41) * 2 - 1; return normalize(float2(x - floor(x + 0.5), abs(x) - 0.5)); } void Unity_GradientNoise_float(float2 UV, float Scale, out float Out) { float2 p = UV * Scale; float2 ip = floor(p); float2 fp = frac(p); float d00 = dot(Unity_GradientNoise_Dir_float(ip), fp); float d01 = dot(Unity_GradientNoise_Dir_float(ip + float2(0, 1)), fp - float2(0, 1)); float d10 = dot(Unity_GradientNoise_Dir_float(ip + float2(1, 0)), fp - float2(1, 0)); float d11 = dot(Unity_GradientNoise_Dir_float(ip + float2(1, 1)), fp - float2(1, 1)); fp = fp * fp * fp * (fp * (fp * 6 - 15) + 10); Out = lerp(lerp(d00, d01, fp.y), lerp(d10, d11, fp.y), fp.x) + 0.5; } void Unity_Multiply_float(float A, float B, out float Out) { Out = A * B; } void Unity_Add_float(float A, float B, out float Out) { Out = A + B; } inline float Unity_SimpleNoise_RandomValue_float (float2 uv) { return frac(sin(dot(uv, float2(12.9898, 78.233)))*43758.5453); } inline float Unity_SimpleNnoise_Interpolate_float (float a, float b, float t) { return (1.0-t)*a + (t*b); } inline float Unity_SimpleNoise_ValueNoise_float (float2 uv) { float2 i = floor(uv); float2 f = frac(uv); f = f * f * (3.0 - 2.0 * f); uv = abs(frac(uv) - 0.5); float2 c0 = i + float2(0.0, 0.0); float2 c1 = i + float2(1.0, 0.0); float2 c2 = i + float2(0.0, 1.0); float2 c3 = i + float2(1.0, 1.0); float r0 = Unity_SimpleNoise_RandomValue_float(c0); float r1 = Unity_SimpleNoise_RandomValue_float(c1); float r2 = Unity_SimpleNoise_RandomValue_float(c2); float r3 = Unity_SimpleNoise_RandomValue_float(c3); float bottomOfGrid = Unity_SimpleNnoise_Interpolate_float(r0, r1, f.x); float topOfGrid = Unity_SimpleNnoise_Interpolate_float(r2, r3, f.x); float t = Unity_SimpleNnoise_Interpolate_float(bottomOfGrid, topOfGrid, f.y); return t; } void Unity_SimpleNoise_float(float2 UV, float Scale, out float Out) { float t = 0.0; float freq = pow(2.0, float(0)); float amp = pow(0.5, float(3-0)); t += Unity_SimpleNoise_ValueNoise_float(float2(UV.x*Scale/freq, UV.y*Scale/freq))*amp; freq = pow(2.0, float(1)); amp = pow(0.5, float(3-1)); t += Unity_SimpleNoise_ValueNoise_float(float2(UV.x*Scale/freq, UV.y*Scale/freq))*amp; freq = pow(2.0, float(2)); amp = pow(0.5, float(3-2)); t += Unity_SimpleNoise_ValueNoise_float(float2(UV.x*Scale/freq, UV.y*Scale/freq))*amp; Out = t; } void Unity_TilingAndOffset_float(float2 UV, float2 Tiling, float2 Offset, out float2 Out) { Out = UV * Tiling + Offset; } void Unity_Multiply_float(float4 A, float4 B, out float4 Out) { Out = A * B; } // Graph Vertex struct VertexDescription { float3 Position; float3 Normal; float3 Tangent; }; VertexDescription VertexDescriptionFunction(VertexDescriptionInputs IN) { VertexDescription description = (VertexDescription)0; description.Position = IN.ObjectSpacePosition; description.Normal = IN.ObjectSpaceNormal; description.Tangent = IN.ObjectSpaceTangent; return description; } // Graph Pixel struct SurfaceDescription { float3 BaseColor; float Alpha; }; SurfaceDescription SurfaceDescriptionFunction(SurfaceDescriptionInputs IN) { SurfaceDescription surface = (SurfaceDescription)0; UnityTexture2D _Property_5f96fa6b31874c7c8f49a5ba4c802ea1_Out_0 = UnityBuildTexture2DStructNoScale(Texture2D_40d3e1ffef7f43f6b3648f291bb5974d); float _Property_e2b4dcb7085e4752ace7d623eaa848a5_Out_0 = Vector1_23db7fea7a93488a82f726fa778690e9; float _GradientNoise_0295ca2f6ca341b1ac796ec73bf2385e_Out_2; Unity_GradientNoise_float(IN.uv0.xy, 3, _GradientNoise_0295ca2f6ca341b1ac796ec73bf2385e_Out_2); float _Property_7166f06b49d84545891345939cacb632_Out_0 = Vector1_3b055a08b82546ffbbe80087a02fe9cb; float _Multiply_bbf027acfdbb41ccaa57e62650292da4_Out_2; Unity_Multiply_float(_Property_7166f06b49d84545891345939cacb632_Out_0, IN.TimeParameters.x, _Multiply_bbf027acfdbb41ccaa57e62650292da4_Out_2); float _Add_31381d66d83848d381412ee3af768cad_Out_2; Unity_Add_float(_GradientNoise_0295ca2f6ca341b1ac796ec73bf2385e_Out_2, _Multiply_bbf027acfdbb41ccaa57e62650292da4_Out_2, _Add_31381d66d83848d381412ee3af768cad_Out_2); float _SimpleNoise_634cb24c606344d28b5e7c670c09ba7a_Out_2; Unity_SimpleNoise_float((_Add_31381d66d83848d381412ee3af768cad_Out_2.xx), 50, _SimpleNoise_634cb24c606344d28b5e7c670c09ba7a_Out_2); float _Multiply_8c1af9eb25a14ad7910d7c5737106dba_Out_2; Unity_Multiply_float(_Property_e2b4dcb7085e4752ace7d623eaa848a5_Out_0, _SimpleNoise_634cb24c606344d28b5e7c670c09ba7a_Out_2, _Multiply_8c1af9eb25a14ad7910d7c5737106dba_Out_2); float2 _Vector2_6686572d44b148c3bd43ea00a7ee71d6_Out_0 = float2(_Multiply_8c1af9eb25a14ad7910d7c5737106dba_Out_2, 1); float2 _TilingAndOffset_80aee777cdc84f93b09a9f58f7cd8a21_Out_3; Unity_TilingAndOffset_float(IN.uv0.xy, float2 (1, -1), _Vector2_6686572d44b148c3bd43ea00a7ee71d6_Out_0, _TilingAndOffset_80aee777cdc84f93b09a9f58f7cd8a21_Out_3); float4 _SampleTexture2D_a940191ef9bb4c11a83d593387dc04f9_RGBA_0 = SAMPLE_TEXTURE2D(_Property_5f96fa6b31874c7c8f49a5ba4c802ea1_Out_0.tex, _Property_5f96fa6b31874c7c8f49a5ba4c802ea1_Out_0.samplerstate, _TilingAndOffset_80aee777cdc84f93b09a9f58f7cd8a21_Out_3); float _SampleTexture2D_a940191ef9bb4c11a83d593387dc04f9_R_4 = _SampleTexture2D_a940191ef9bb4c11a83d593387dc04f9_RGBA_0.r; float _SampleTexture2D_a940191ef9bb4c11a83d593387dc04f9_G_5 = _SampleTexture2D_a940191ef9bb4c11a83d593387dc04f9_RGBA_0.g; float _SampleTexture2D_a940191ef9bb4c11a83d593387dc04f9_B_6 = _SampleTexture2D_a940191ef9bb4c11a83d593387dc04f9_RGBA_0.b; float _SampleTexture2D_a940191ef9bb4c11a83d593387dc04f9_A_7 = _SampleTexture2D_a940191ef9bb4c11a83d593387dc04f9_RGBA_0.a; float4 _Property_cc5ba6d85d044fb894405bde6f11b58c_Out_0 = Color_cfca9819e86340599cd882083808e8c0; float4 _Multiply_a29ff5ef4d7049d2bb4da2beabad978e_Out_2; Unity_Multiply_float(_SampleTexture2D_a940191ef9bb4c11a83d593387dc04f9_RGBA_0, _Property_cc5ba6d85d044fb894405bde6f11b58c_Out_0, _Multiply_a29ff5ef4d7049d2bb4da2beabad978e_Out_2); surface.BaseColor = (_Multiply_a29ff5ef4d7049d2bb4da2beabad978e_Out_2.xyz); surface.Alpha = 1; return surface; } // -------------------------------------------------- // Build Graph Inputs VertexDescriptionInputs BuildVertexDescriptionInputs(Attributes input) { VertexDescriptionInputs output; ZERO_INITIALIZE(VertexDescriptionInputs, output); output.ObjectSpaceNormal = input.normalOS; output.ObjectSpaceTangent = input.tangentOS.xyz; output.ObjectSpacePosition = input.positionOS; return output; } SurfaceDescriptionInputs BuildSurfaceDescriptionInputs(Varyings input) { SurfaceDescriptionInputs output; ZERO_INITIALIZE(SurfaceDescriptionInputs, output); output.uv0 = input.texCoord0; output.TimeParameters = _TimeParameters.xyz; // This is mainly for LW as HD overwrite this value #if defined(SHADER_STAGE_FRAGMENT) && defined(VARYINGS_NEED_CULLFACE) #define BUILD_SURFACE_DESCRIPTION_INPUTS_OUTPUT_FACESIGN output.FaceSign = IS_FRONT_VFACE(input.cullFace, true, false); #else #define BUILD_SURFACE_DESCRIPTION_INPUTS_OUTPUT_FACESIGN #endif #undef BUILD_SURFACE_DESCRIPTION_INPUTS_OUTPUT_FACESIGN return output; } // -------------------------------------------------- // Main #include "Packages/com.unity.render-pipelines.universal/Editor/ShaderGraph/Includes/ShaderPass.hlsl" #include "Packages/com.unity.render-pipelines.universal/Editor/ShaderGraph/Includes/Varyings.hlsl" #include "Packages/com.unity.render-pipelines.universal/Editor/ShaderGraph/Includes/SpriteUnlitPass.hlsl" ENDHLSL } } FallBack "Hidden/Shader Graph/FallbackError" } 复制代码
源码下载地址：Unity技术-ShaderGraph-水面倒影Shader.zip-Unity3D文档类资源-CSDN下载
👉其他
📢作者：小空和小芝中的小空
📢这位道友请留步☁️，我观你气度不凡，谈吐间隐隐有王者霸气💚，日后定有一番大作为📝！！！旁边有点赞👍收藏🌟今日传你，点了吧，未来你成功☀️，我分文不取，若不成功⚡️，也好回来找我。
