Question

好，我正在尝试做这样的标准模糊材料（变暗的节拍军刀菜单）

或

但是在3D对象上，所以不是相机效果或画布材质。我发现一些素材质量较差，但我需要光泽感和高斯模糊感。我有一个奇怪的条纹：

//升级注意：用“ UnityObjectToClipPos（）”替换了“ mul（UNITY_MATRIX_MVP，）”

Shader "Custom/WaterBlur" { Properties { _blurSizeXY("BlurSizeXY", Range(0,10)) = 0 } SubShader { // Draw ourselves after all opaque geometry Tags { "Queue" = "Transparent" } // Grab the screen behind the object into _GrabTexture GrabPass { } // Render the object with the texture generated above Pass { CGPROGRAM #pragma debug #pragma vertex vert #pragma fragment frag #ifndef SHADER_API_D3D11 #pragma target 3.0 #else #pragma target 4.0 #endif sampler2D _GrabTexture : register(s0); float _blurSizeXY; struct data { float4 vertex : POSITION; float3 normal : NORMAL; }; struct v2f { float4 position : POSITION; float4 screenPos : TEXCOORD0; }; v2f vert(data i){ v2f o; o.position = UnityObjectToClipPos(i.vertex); o.screenPos = o.position; return o; } half4 frag( v2f i ) : COLOR { float2 screenPos = i.screenPos.xy / i.screenPos.w; float depth= _blurSizeXY*0.0005; screenPos.x = (screenPos.x + 1) * 0.5; screenPos.y = 1-(screenPos.y + 1) * 0.5; half4 sum = half4(0.0h,0.0h,0.0h,0.0h); sum += tex2D( _GrabTexture, float2(screenPos.x-5.0 * depth, screenPos.y+5.0 * depth)) * 0.025; sum += tex2D( _GrabTexture, float2(screenPos.x+5.0 * depth, screenPos.y-5.0 * depth)) * 0.025; sum += tex2D( _GrabTexture, float2(screenPos.x-4.0 * depth, screenPos.y+4.0 * depth)) * 0.05; sum += tex2D( _GrabTexture, float2(screenPos.x+4.0 * depth, screenPos.y-4.0 * depth)) * 0.05; sum += tex2D( _GrabTexture, float2(screenPos.x-3.0 * depth, screenPos.y+3.0 * depth)) * 0.09; sum += tex2D( _GrabTexture, float2(screenPos.x+3.0 * depth, screenPos.y-3.0 * depth)) * 0.09; sum += tex2D( _GrabTexture, float2(screenPos.x-2.0 * depth, screenPos.y+2.0 * depth)) * 0.12; sum += tex2D( _GrabTexture, float2(screenPos.x+2.0 * depth, screenPos.y-2.0 * depth)) * 0.12; sum += tex2D( _GrabTexture, float2(screenPos.x-1.0 * depth, screenPos.y+1.0 * depth)) * 0.15; sum += tex2D( _GrabTexture, float2(screenPos.x+1.0 * depth, screenPos.y-1.0 * depth)) * 0.15; sum += tex2D( _GrabTexture, screenPos-5.0 * depth) * 0.025; sum += tex2D( _GrabTexture, screenPos-4.0 * depth) * 0.05; sum += tex2D( _GrabTexture, screenPos-3.0 * depth) * 0.09; sum += tex2D( _GrabTexture, screenPos-2.0 * depth) * 0.12; sum += tex2D( _GrabTexture, screenPos-1.0 * depth) * 0.15; sum += tex2D( _GrabTexture, screenPos) * 0.16; sum += tex2D( _GrabTexture, screenPos+5.0 * depth) * 0.15; sum += tex2D( _GrabTexture, screenPos+4.0 * depth) * 0.12; sum += tex2D( _GrabTexture, screenPos+3.0 * depth) * 0.09; sum += tex2D( _GrabTexture, screenPos+2.0 * depth) * 0.05; sum += tex2D( _GrabTexture, screenPos+1.0 * depth) * 0.025; return sum/2; } ENDCG } } Fallback Off }

如何为网格完成光泽度高的高斯模糊材料？

Answer 1

如果要在表面上包含光泽，这是一种实现方法，它基于以下复制的Unity Community Wiki中的Glossy Textures文章中的着色器：

Shader "Cg per-pixel lighting with texture" {
   Properties {
      _MainTex ("RGBA Texture For Material Color", 2D) = "white" {} 
      _Color ("Diffuse Material Color", Color) = (1,1,1,1) 
      _SpecColor ("Specular Material Color", Color) = (1,1,1,1) 
      _Shininess ("Shininess", Float) = 10
   }
   SubShader {
      Pass {    
         Tags { "LightMode" = "ForwardBase" } 
            // pass for ambient light and first light source

         CGPROGRAM

         #pragma vertex vert  
         #pragma fragment frag 

         #include "UnityCG.cginc"
         uniform float4 _LightColor0; 
            // color of light source (from "Lighting.cginc")

         // User-specified properties
         uniform sampler2D _MainTex;    
         uniform float4 _Color; 
         uniform float4 _SpecColor; 
         uniform float _Shininess;

         struct vertexInput {
            float4 vertex : POSITION;
            float3 normal : NORMAL;
            float4 texcoord : TEXCOORD0;
        };
         struct vertexOutput {
            float4 pos : SV_POSITION;
            float4 posWorld : TEXCOORD0;
            float3 normalDir : TEXCOORD1;
            float4 tex : TEXCOORD2;
        };

         vertexOutput vert(vertexInput input) 
         {
            vertexOutput output;

            float4x4 modelMatrix = unity_ObjectToWorld;
            float4x4 modelMatrixInverse = unity_WorldToObject;

            output.posWorld = mul(modelMatrix, input.vertex);
            output.normalDir = normalize(
               mul(float4(input.normal, 0.0), modelMatrixInverse).xyz);
            output.tex = input.texcoord;
            output.pos = mul(UNITY_MATRIX_MVP, input.vertex);
            return output;
         }

         float4 frag(vertexOutput input) : COLOR
         {
            float3 normalDirection = normalize(input.normalDir);

            float3 viewDirection = normalize(
               _WorldSpaceCameraPos - input.posWorld.xyz);
            float3 lightDirection;
            float attenuation;

            float4 textureColor = tex2D(_MainTex, input.tex.xy);

            if (0.0 == _WorldSpaceLightPos0.w) // directional light?
            {
               attenuation = 1.0; // no attenuation
               lightDirection = 
                  normalize(_WorldSpaceLightPos0.xyz);
            } 
            else // point or spot light
            {
               float3 vertexToLightSource = 
                  _WorldSpaceLightPos0.xyz - input.posWorld.xyz;
               float distance = length(vertexToLightSource);
               attenuation = 1.0 / distance; // linear attenuation 
               lightDirection = normalize(vertexToLightSource);
            }

            float3 ambientLighting = textureColor.rgb  
               * UNITY_LIGHTMODEL_AMBIENT.rgb * _Color.rgb;

            float3 diffuseReflection = textureColor.rgb  
               * attenuation * _LightColor0.rgb * _Color.rgb
               * max(0.0, dot(normalDirection, lightDirection));

            float3 specularReflection;
            if (dot(normalDirection, lightDirection) < 0.0) 
               // light source on the wrong side?
            {
               specularReflection = float3(0.0, 0.0, 0.0); 
                  // no specular reflection
            }
            else // light source on the right side
            {
               specularReflection = attenuation * _LightColor0.rgb 
                  * _SpecColor.rgb * (1.0 - textureColor.a) 
                     // for usual gloss maps: "... * textureColor.a" 
                  * pow(max(0.0, dot(
                  reflect(-lightDirection, normalDirection), 
                  viewDirection)), _Shininess);
            }

            return float4(ambientLighting + diffuseReflection 
               + specularReflection, 1.0);
         }

         ENDCG
      }

      Pass {    
         Tags { "LightMode" = "ForwardAdd" } 
            // pass for additional light sources
         Blend One One // additive blending 

          CGPROGRAM

         #pragma vertex vert  
         #pragma fragment frag 

         #include "UnityCG.cginc"
         uniform float4 _LightColor0; 
            // color of light source (from "Lighting.cginc")

         // User-specified properties
         uniform sampler2D _MainTex;    
         uniform float4 _Color; 
         uniform float4 _SpecColor; 
         uniform float _Shininess;

        struct vertexInput {
            float4 vertex : POSITION;
            float3 normal : NORMAL;
            float4 texcoord : TEXCOORD0;
        };
         struct vertexOutput {
            float4 pos : SV_POSITION;
            float4 posWorld : TEXCOORD0;
            float3 normalDir : TEXCOORD1;
            float4 tex : TEXCOORD2;
        };

         vertexOutput vert(vertexInput input) 
         {
            vertexOutput output;

            float4x4 modelMatrix = unity_ObjectToWorld;
            float4x4 modelMatrixInverse = unity_WorldToObject;

            output.posWorld = mul(modelMatrix, input.vertex);
            output.normalDir = normalize(
               mul(float4(input.normal, 0.0), modelMatrixInverse).xyz);
            output.tex = input.texcoord;
            output.pos = mul(UNITY_MATRIX_MVP, input.vertex);
            return output;
         }

         float4 frag(vertexOutput input) : COLOR
         {
            float3 normalDirection = normalize(input.normalDir);

            float3 viewDirection = normalize(
               _WorldSpaceCameraPos - input.posWorld.xyz);
            float3 lightDirection;
            float attenuation;

            float4 textureColor = tex2D(_MainTex, input.tex.xy);

            if (0.0 == _WorldSpaceLightPos0.w) // directional light?
            {
               attenuation = 1.0; // no attenuation
               lightDirection = 
                  normalize(_WorldSpaceLightPos0.xyz);
            } 
            else // point or spot light
            {
               float3 vertexToLightSource = 
                  _WorldSpaceLightPos0.xyz - input.posWorld.xyz;
               float distance = length(vertexToLightSource);
               attenuation = 1.0 / distance; // linear attenuation 
               lightDirection = normalize(vertexToLightSource);
            }

            float3 diffuseReflection = textureColor.rgb  
               * attenuation * _LightColor0.rgb * _Color.rgb
               * max(0.0, dot(normalDirection, lightDirection));

            float3 specularReflection;
            if (dot(normalDirection, lightDirection) < 0.0) 
               // light source on the wrong side?
            {
               specularReflection = float3(0.0, 0.0, 0.0); 
                  // no specular reflection
            }
            else // light source on the right side
            {
               specularReflection = attenuation * _LightColor0.rgb 
                  * _SpecColor.rgb * (1.0 - textureColor.a) 
                     // for usual gloss maps: "... * textureColor.a" 
                  * pow(max(0.0, dot(
                  reflect(-lightDirection, normalDirection), 
                  viewDirection)), _Shininess);
            }

            return float4(diffuseReflection 
               + specularReflection, 1.0);
               // no ambient lighting in this pass
         }

         ENDCG
      }
   }
   Fallback "Specular"
}

您需要将模糊着色器的最后Pass合并到上述着色器中的第一个Pass和第二个_MainTex ("RGBA Texture For Material Color", 2D) = "white" {} _Color ("Diffuse Material Color", Color) = (1,1,1,1) _SpecColor ("Specular Material Color", Color) = (1,1,1,1) _Shininess ("Shininess", Float) = 10中。

着色器属性

如果这些属性尚不存在，则将它们添加到模糊着色器中（如果存在，则可能需要重命名）：

"LightMode" = "ForwardBase"

第一次光泽通过

设置标签以匹配光泽着色器：uniform sampler2D _MainTex; uniform float4 _Color; uniform float4 _SpecColor; uniform float _Shininess;

如果这些变量尚不存在，请将它们添加到过程中（如果存在，则可能需要重命名）：

float3 normal : NORMAL;

在顶点输入结构中包括float4 posWorld : TEXCOORD0;。

在顶点输出结构中包括float3 normalDir : TEXCOORD1;和vert。

在output.posWorld函数中，以与光泽着色器output.normalDir相同的方式设置vert和frag。

然后，在textureColor函数中，获取模糊着色器已经返回的内容，而不是返回它，而是将其用作第一个frag函数中的frag变量。光泽着色器，然后执行其余的第一光泽Pass。

您可能必须重命名代码中的其他内容，以使其与您已经拥有的通行证一起使用。我不知道您的模糊着色器是什么样子，所以我不可能列出将两个通道合并在一起的每一步。

第二次光泽测试

重复与第一光泽Pass相同的过程，但是使用第二光泽"LightMode" = "ForwardAdd"中的代码（尤其重要的是使用不同的标签v_result Table1%ROWTYPE; BEGIN SELECT a.* INTO v_result FROM Table1 a WHERE a.id = 123; EXCEPTION WHEN NO_DATA_FOUND THEN -- when record not found SELECT b.* INTO v_result FROM Table2 b WHERE b.id = 123; END;）

Unity-光泽模糊材料？

1 个答案:

着色器属性

第一次光泽通过

第二次光泽测试