{"id":246,"date":"2020-10-16T00:09:39","date_gmt":"2020-10-15T16:09:39","guid":{"rendered":"https:\/\/meecarlo.wordpress.com\/?p=246"},"modified":"2020-12-28T18:39:40","modified_gmt":"2020-12-28T10:39:40","slug":"shader%e5%85%a5%e9%97%a8-6-%e9%80%8f%e6%98%8e%e5%ba%a6%e6%b5%8b%e8%af%95%e4%b8%8e%e9%98%b4%e5%bd%b1","status":"publish","type":"post","link":"https:\/\/meecarlo.com\/old\/2020\/10\/16\/shader%e5%85%a5%e9%97%a8-6-%e9%80%8f%e6%98%8e%e5%ba%a6%e6%b5%8b%e8%af%95%e4%b8%8e%e9%98%b4%e5%bd%b1\/","title":{"rendered":"Shader\u5165\u95e8\u20146.\u900f\u660e\u5ea6\u6d4b\u8bd5\u4e0e\u9634\u5f71"},"content":{"rendered":"\n

\u9996\u5148\u5728\u8fdb\u884c\u4ee3\u7801\u7f16\u5199\u524d\uff0c\u6211\u4eec\u8981\u4e86\u89e3\u6e32\u67d3\u7684\u4e00\u4e2a\u673a\u5236\uff0c\u5c31\u662fTas\u5e8f\u5217\uff0c\u7ed9Subshader\u4e0b\u6dfb\u52a0\u6807\u7b7e\u53ef\u4ee5\u5b9a\u4e49\u6574\u4e2aSubshader\u7684\u961f\u5217\uff0c\u7ed9Pass\u6dfb\u52a0\u6807\u7b7e\u53ef\u4ee5\u5b9a\u4e49\u8be5Pass\u7684\u5149\u7167\u6a21\u5f0f\u6bd4\u5982forwardbase\uff0cforwardadd\u7c7b\u4f3c\u3002 \u8fd8\u8981\u6211\u4eec\u9700\u8981\u52a0\u6df1\u4e00\u4e2a\u6982\u5ff5\u662f\u6e32\u67d3\u987a\u5e8f\u3002\u5728\u4e4b\u524d\u7684\u6848\u4f8b\u7531\u4e8e\u662f\u5355\u4e2a\u5149\u7167\u6a21\u578b\u4e0d\u7528\u8003\u8651\u7269\u4f53\u7684\u906e\u7f69\u60c5\u51b5\uff0c\u6240\u4ee5\u65e0\u6240\u8c13\u6e32\u67d3\u987a\u5e8f\u3002\u800c\u5bf9\u4e8e\u4e0d\u900f\u660e\u7684\u7269\u4f53\uff08Rendertype=opaque\uff09\u4e0d\u9700\u8981\u8003\u8651\u6e32\u67d3\u987a\u5e8f\u4e5f\u80fd\u5728\u5c4f\u5e55\u4e0a\u5f97\u5230\u6b63\u786e\u7684\u6e32\u67d3\uff0c\u8fd9\u662f\u56e0\u4e3a\u6444\u50cf\u673a\u81ea\u5df1\u505a\u4e86\u7684\u4e2a\u6df1\u5ea6\u68c0\u6d4b\uff0c\u5728\u6df1\u5ea6\u7f13\u51b2\uff08z-buffer\uff09\u4e2d\u4f1a\u51b3\u5b9a\u90a3\u4e2a\u7269\u4f53\u4f1a\u88ab\u6e32\u67d3\u5728\u524d\u9762\uff0c\u54ea\u4e9b\u7269\u4f53\u4f1a\u88ab\u906e\u6321\u3002\u8fd9\u65f6\u5019\u6211\u4eec\u4e0d\u7528\u53bb\u5173\u5fc3\u6e32\u67d3\u987a\u5e8f\uff0c\u56e0\u4e3a\u6444\u50cf\u673a\u4f1a\u81ea\u52a8\u5224\u65ad\u3002<\/p>\n\n\n\n

\u5f53\u6211\u4eec\u5728\u8fdb\u884c\u5199\u900f\u660e\u6750\u8d28\u7684\u65f6\u5019\u6709\u4e24\u79cd\u89e3\u51b3\u65b9\u6848\uff0c\u4e00\u79cd\u662f\u900f\u660e\u5ea6\u6d4b\u8bd5\uff0c\u4e00\u79cd\u662f\u900f\u660e\u5ea6\u6df7\u5408\u3002<\/p>\n\n\n\n

\u900f\u660e\u5ea6\u6d4b\u8bd5\uff1a\u4e00\u79cd\u6781\u7aef\u7684\u68c0\u6d4b\u673a\u5236\uff0c\u53ea\u8981\u6709\u7247\u5143\u4e0d\u6ee1\u8db3\u8fd9\u4e2a\u6d4b\u8bd5\u5c31\u4f1a\u88ab\u820d\u5f03\uff0c\u6ee1\u8db3\u5c31\u4fdd\u7559\u7136\u540e\u8fdb\u884c\u6df1\u5ea6\u6d4b\u8bd5\u4e0e\u6df1\u5ea6\u5199\u5165\u3002\u4e5f\u5c31\u662f\u8bf4\uff0c\u5176\u4e0d\u7528\u5173\u95edZWrite\u3002<\/p>\n\n\n\n

\u6211\u4eec\u5148\u8fdb\u884c\u900f\u660e\u5ea6\u6d4b\u8bd5\u7684shader\u4e66\u5199\uff0c\u5728\u6b64\u4e4b\u524d\uff0c\u4ecb\u7ecd\u4e2aclip\u51fd\u6570<\/p>\n\n\n\n

<pre class=\"wp-block-syntaxhighlighter-code\">void clip(float4 x)\n{\n    if (any(x &lt;0))\n        discard;\n}<\/pre><\/code><\/pre>\n\n\n\n
\u610f\u601d\u5c31\u662f\u5982\u679c\u7ed9\u5b9a\u4e00\u4e2a\u53c2\u6570\u7684\u4efb\u4f55\u4e00\u4e2a\u5206\u91cf\u4e3a\u8d1f\u6570\uff0c\u5c31\u4f1a\u820d\u5f03\u5f53\u524d\u7684\u50cf\u7d20\u7684\u8f93\u51fa\u3002\u90a3\u4e48\u5173\u952e\u51fd\u6570\u5c31\u5f88\u7b80\u5355\u4e86\uff0c\u62ff\u88ab\u68c0\u6d4b\u7684a\u5206\u91cf\u51cf\u53bb\u4e00\u4e2a\u81ea\u5b9a\u4e49\u503c\uff0c\u53ea\u6709\u5927\u4e8e0\u7684\u624d\u80fd\u4fdd\u5b58\u3002<\/p>\n\n\n\n
<pre class=\"wp-block-syntaxhighlighter-code\">Shader \"Custom\/AlphaTest\"\n{\n    Properties\n    {\n        _Color (\"Color\", Color) = (1,1,1,1)\n        _MainTex (\"Main Tex\", 2D) = \"white\" {}\n        _AlphaValue (\"AlphaValue\", Range(0,1)) = 0.5\n        \n    }\n    SubShader\n    {\n        Tags{\"Queue\"=\"AlphaTest\" \"IgnoreProjector\"=\"True\" \"Rendertype\"=\"TransparentCutout\" }\n        Pass{\n            Tags{\"LightMode\"=\"ForwardBase\"}\n            CGPROGRAM\n            #pragma vertex vert\n            #pragma fragment frag \n            #include \"Lighting.cginc\"\n            #include \"UnityCG.cginc\"\n            fixed4 _Color;\n            sampler2D _MainTex;\n            float4 _MainTex_ST;\n            float _AlphaValue;\n            struct a2v{\n                float4 vertex:POSITION;\n                float3 normal:NORMAL;\n                float4 texcoord:TEXCOORD0;\n            };\n            struct v2f{\n                float4 pos:SV_POSITION;\n                float3 worldNormal:TEXCOORD0;\n                float3 worldPos:TEXCOORD1;\n                float2 uv:TEXCOORD2;\n            };\n            v2f vert(a2v v){\n                v2f o;\n                o.pos=UnityObjectToClipPos(v.vertex);\n                o.worldNormal=UnityObjectToWorldNormal(v.normal);\n                o.worldPos=mul(unity_ObjectToWorld,v.vertex).xyz;\n                o.uv=TRANSFORM_TEX(v.texcoord,_MainTex);\n                return o;\n            }\n            fixed4 frag(v2f i):SV_TARGET{\n                fixed3 worldNormal=normalize(i.worldNormal);\n                fixed3 worldLightDir=normalize(UnityWorldSpaceLightDir(i.worldPos));\n                fixed4 texColor=tex2D(_MainTex,i.uv);\n                clip(texColor.a-_AlphaValue);\n                fixed3 albedo=texColor.rgb*_Color;\n                fixed3 ambient=UNITY_LIGHTMODEL_AMBIENT.xyz*albedo;\n                fixed3 diffuse=_LightColor0.rgb*albedo*max(0,dot(worldNormal,worldLightDir));\n                return fixed4(ambient+diffuse,1.0);\n            }\n            ENDCG\n        }\n       \n       \n    }\n    FallBack \"Tranaparent\/Cutout\/VertexLit\"\n}\n<\/pre><\/code><\/pre>\n\n\n\n
\"\"
alphatest\u7684\u66b4\u529b\u900f\u660e<\/figcaption><\/figure>\n\n\n\n
\u7b2c\u4e8c\u79cd\u65b9\u6cd5\u8981\u7a0d\u5fae\u5706\u6ed1\u4e00\u70b9\uff0c\u79f0\u4e3a\u900f\u660e\u5ea6\u6df7\u5408\uff0c\u8fd9\u79cd\u65b9\u6cd5\u53ef\u4ee5\u771f\u6b63\u7684\u5f97\u5230\u900f\u660e\u6548\u679c\u3002\u4ed6\u4f1a\u5148\u4e0e\u5b58\u50a8\u5728\u989c\u8272\u7f13\u51b2\u4e2d\u7684\u989c\u8272\u8fdb\u884c\u6df7\u5408\uff0c\u5f97\u5230\u65b0\u7684\u989c\u8272\u3002\u4f46\u56e0\u4e3a\uff0c\u6211\u4eec\u5173\u95ed\u4e86\u6df1\u5ea6\u5199\u5165\uff0c\u6240\u4ee5\u6211\u4eec\u8981\u6ce8\u610f\u6e32\u67d3\u987a\u5e8f\u3002<\/p>\n\n\n\n
\u4e3a\u4e86\u8fdb\u884c\u6df7\u5408\uff0c\u6211\u4eec\u9700\u8981\u4e86\u89e3Blend\u547d\u4ee4\uff0c\u8be5\u547d\u4ee4\u4e00\u822c\u5728Pass\u5185<\/p>\n\n\n\n
Blend Off<\/td>\u5173\u95ed\u6df7\u5408\uff08\u9ed8\u8ba4\uff09<\/td><\/tr>
Blend SrcFactor DstFactor<\/td>\u7247\u5143\u4ea7\u751f\u7684\u989c\u8272\u4e58\u4ee5SrcFactor\uff0c\u52a0\u4e0a\u5c4f\u5e55\u4e0a\u5df2\u6709\u7684\u989c\u8272\u4e58\u4ee5DstFactor\uff0c\u5f97\u5230\u6700\u7ec8\u7684\u989c\u8272\uff08\u5199\u5165\u989c\u8272\u7f13\u5b58\uff09<\/td><\/tr>
Blend SrcFactor DstFactor,SrcFactorA DstFactorA<\/td>\u540c\u4e0a\uff0c\u53ea\u4e0d\u8fc7\u4f7f\u7528\u5355\u72ec\u7684\u94f6\u5b50SrcFactorA\u4e0eDstFactorA\u6765\u6df7\u5408\u900f\u660e\u5ea6\u901a\u9053<\/td><\/tr>
BlendOp BlendOperation<\/td>\u7528\u5176\u4ed6\u7684\u64cd\u4f5c\u6765\u53d6\u4ee3\u52a0\u6cd5\u6df7\u5408<\/td><\/tr>
BlendOp OpColor,OpAlpha<\/td>\u540c\u4e0a\uff0c\u53ea\u4e0d\u8fc7\u5bf9\u4e8e\u900f\u660e\u5ea6\u901a\u9053\u7684\u4e0d\u540c\u64cd\u4f5c<\/td><\/tr><\/tbody><\/table>
\u5e38\u89c1\u7684\u6df7\u5408\u547d\u4ee4<\/figcaption><\/figure>\n\n\n\n
\u6df7\u5408\u64cd\u4f5c\uff08BlendOp\uff09<\/p>\n\n\n\n
Add<\/td>\u52a0\u5206
FinalColor=SrcFactor*SrcColor+DstFactor*DstColor<\/td><\/tr>
Sub<\/td>\u51cf\u6cd5\uff08\u6e90-\u76ee\u6807\uff09\uff1a
FinalColor=SrcFactor*SrcColor-DstFactor*DstColor<\/td><\/tr>
RevSub<\/td>\u51cf\u6cd5\uff08\u76ee\u6807-\u6e90\uff09\uff1a
FinalColor=DstFactor*DstColor-SrcFactor*SrcColor<\/td><\/tr>
Min<\/td>\u8f83\u5c0f\u503c\uff08\u9010\u4e2a\u901a\u9053\u6bd4\u8f83\uff09<\/td><\/tr>
Max<\/td>\u8f83\u5927\u503c\uff08\u9010\u4e2a\u901a\u9053\u6bd4\u8f83\uff09<\/td><\/tr><\/tbody><\/table>
\u6df7\u5408\u64cd\u4f5c<\/figcaption><\/figure>\n\n\n\n
\u6df7\u5408\u56e0\u5b50<\/p>\n\n\n\n
One<\/td>\u6df7\u5408\u56e0\u5b501\uff0c\u8868\u793a\u5b8c\u5168\u7684\u6e90\u989c\u8272\u6216\u76ee\u6807\u989c\u8272<\/td><\/tr>
Zero<\/td>\u6df7\u5408\u56e0\u5b500\uff0c\u820d\u5f03\u6389\u6e90\u989c\u8272\u6216\u76ee\u6807\u989c\u8272<\/td><\/tr>
SrcColor<\/td>\u6e90\u989c\u8272\u503c<\/td><\/tr>
SrcAlpha<\/td>\u6e90\u900f\u660e\u5ea6<\/td><\/tr>
DstColor<\/td>\u76ee\u6807\u989c\u8272<\/td><\/tr>
DstAlpha<\/td>\u76ee\u6807\u900f\u660e\u5ea6<\/td><\/tr>
OneMinusSrcColor<\/td>1-SrcColor<\/td><\/tr>
OneMinusSrcAlpha<\/td>1-SrcAlpha<\/td><\/tr>
OneMinusDstColor<\/td>1-DstColor<\/td><\/tr>
OneMinusDstAlpha<\/td>1-DstAlpha<\/td><\/tr><\/tbody><\/table>
\u6df7\u5408\u56e0\u5b50<\/figcaption><\/figure>\n\n\n\n
\u5e38\u7528\u7684\u6df7\u5408\u547d\u4ee4<\/p>\n\n\n\n
<pre class=\"wp-block-syntaxhighlighter-code\">Blend SrcAlpha OneMinusSrcAlpha \/\/ \u4f20\u7edf\u900f\u660e\u5ea6\nBlend One OneMinusSrcAlpha \/\/ \u9884\u4e58\u900f\u660e\u5ea6\nBlend One One \/\/ \u53e0\u52a0\nBlend OneMinusDstColor One \/\/ \u67d4\u548c\u53e0\u52a0\nBlend DstColor Zero \/\/ \u76f8\u4e58\u2014\u2014\u6b63\u7247\u53e0\u5e95\nBlend DstColor SrcColor \/\/ \u4e24\u500d\u76f8\u4e58<\/pre><\/code><\/pre>\n\n\n\n
\u6211\u4eec\u5728\u8fd9\u91cc\u8fd0\u7528Blend SrcAlpha OneMinusSrcAlpha,\u7136\u540e\u518d\u5173\u95ed\u6df1\u5ea6\u5199\u5165\uff0c\u5176\u4ed6\u7684\u5c31\u8ddf\u6211\u4eec\u4e4b\u524d\u5199\u7684\u8d34\u56fe\u6750\u8d28\u4e00\u6837\uff0c\u518d\u590d\u4e60\u4e00\u904d\u8d34\u56fe\u6750\u8d28\u7684\u53cd\u5c04\u516c\u5f0f\uff1aDiffuse=Clight<\/sub>*Mdiffuse<\/sub>*<\/em>max(0,<\/em>dot(n,l))<\/em>\u6240\u4ee5\u6211\u4eec\u5148\u642d\u5efa\u8d34\u56fe\u7684shader\u4ee3\u7801<\/p>\n\n\n\n
\u5f53\u7136\u6211\u4eec\u60f3\u901a\u8fc7\u4e00\u4e2a\u53c2\u6570\u6765\u8c03\u8282\u900f\u660e\u5ea6\uff0c\u53ef\u4ee5\u76f4\u63a5\u5728\u8d34\u56fe\u7684alpha\u901a\u9053\u4e58\u4ee5\u4e00\u4e2a\u53c2\u6570\u5c31\u884c\u4e86\uff0c\u7136\u540e\u518d\u4f7f\u53c2\u6570\u66b4\u9732\u3002<\/p>\n\n\n\n
fixed4 texColor=tex2D(_MainTex,i.uv);\ntexColor.a*_AlphaScale;<\/pre><\/code><\/pre>\n\n\n\n
\u4ee5\u4e0b\u662f\u5b8c\u6574\u4ee3\u7801<\/p>\n\n\n\n
Shader \"Custom\/AlphaBlendShader\"\n{\n    Properties\n    {\n        _Color (\"Color\", Color) = (1,1,1,1)\n        _MainTex (\"Main Texture\", 2D) = \"white\" {}\n        _AlphaScale (\"AlphaScale\", Range(0,1)) = 0.5\n    }\n    SubShader\n    {\n        Tags{\"Queue\"=\"Transparent\" \"IgnoreProjector\"=\"True\" \"RenderType\"=\"Transparent\"}\n        Pass{\n            Tags{\"LightMode\"=\"ForwardBase\"}\n            ZWrite Off \n            Blend SrcAlpha OneMinusSrcAlpha\n            CGPROGRAM\n            #pragma vertex vert \n            #pragma fragment frag \n            #include \"UnityCG.cginc\"\n            #include \"Lighting.cginc\"\n            fixed4 _Color;\n            sampler2D _MainTex;\n            float4 _MainTex_ST;\n            float _AlphaScale;\n            struct a2v{\n                float4 vertex:POSITION;\n                float3 normal:NORMAL;\n                float4 texcoord:TEXCOORD0;\n            };\n            struct v2f{\n                float4 pos:SV_POSITION;\n                float3 worldNormal:TEXCOORD0;\n                float3 worldPos:TEXCOORD1;\n                float2 uv:TEXCOORD2;\n            };\n            v2f vert(a2v v){\n                v2f o;\n                o.pos=UnityObjectToClipPos(v.vertex);\n                o.worldNormal=UnityObjectToWorldNormal(v.normal);\n                o.worldPos=mul(unity_ObjectToWorld,v.vertex).xyz;\n                o.uv=TRANSFORM_TEX(v.texcoord,_MainTex);\n                return o;\n            }\n            fixed4 frag(v2f i):SV_TARGET{\n                fixed3 worldNormal=normalize(i.worldNormal);\n                fixed3 worldLightDir=normalize(UnityWorldSpaceLightDir(i.worldPos));\n                fixed4 texColor=tex2D(_MainTex,i.uv);\n                fixed3 albedo=texColor.rgb*_Color;\n                fixed3 ambient=UNITY_LIGHTMODEL_AMBIENT.xyz*albedo;\n                fixed3 diffuse=_LightColor0.rgb*ambient*max(0,dot(worldNormal,worldLightDir));\n                return fixed4(diffuse+ambient,texColor.a*_AlphaScale);\n            }\n            ENDCG\n        }\n    }\n    FallBack \"Transparent\/Cutout\/VertexLit\"\n}\n<\/code><\/pre>\n\n\n\n
\u4ee3\u7801\u51e0\u4e4e\u4e0e\u4e4b\u524d\u7684\u6f2b\u53cd\u5c04\u8d34\u56fe\u7684\u4e00\u6837\uff0c\u53ea\u662f\u6dfb\u52a0\u4e86 \u5173\u95ed\u6df1\u5ea6\u5199\u5165 \u4e0e \u6df7\u5408\u6a21\u5f0f\uff0c\u5e76\u5b9a\u4e49\u4e86\u6e32\u67d3\u961f\u5217\u3002<\/p>\n\n\n\n
\"\"
AlphaBlend<\/figcaption><\/figure>\n\n\n\n
        \u867d\u7136\u6211\u4eec\u5b8c\u6210\u4e86\u8fd9\u90e8\u5206\u7684\u900f\u660e\u5ea6\uff0c\u4f46\u4fe1\u606f\u7684\u4f60\u4eec\u4e00\u5b9a\u4f1a\u53d1\u89c9\u8fd9\u90e8\u5206\u900f\u660e\u662f\u6709\u95ee\u9898\u7684\uff0c\u56e0\u4e3a\u6211\u4eec\u770b\u4e0d\u5230\u7269\u4f53\u7684\u5185\u90e8\uff0c\u53ea\u662f\u5c06\u6574\u4f53\u8fdb\u884c\u900f\u660e\u5316\u7684\u5904\u7406\u3002\u8fd9\u65f6\u5019\u6211\u4eec\u5c31\u9700\u8981\u601d\u8003\u4e3a\u4ec0\u4e48\u4f1a\u53d1\u751f\u8fd9\u79cd\u60c5\u51b5\uff0c\u53ea\u80fd\u770b\u5230\u6574\u4e2a\u7269\u4f53\u7684\u6b63\u9762\uff0c\u900f\u660e\u7269\u4f53\u5728\u73b0\u5b9e\u4e2d\u5e94\u8be5\u4e0d\u662f\u5982\u6b64\u3002\u8fd9\u662f\u56e0\u4e3a\u6211\u4eec\u5728AlphaBlend\u4e2d\u5173\u95ed\u4e86\u6df1\u5ea6\u5199\u5165\uff0c\u6240\u4ee5\u6444\u50cf\u673a\u4f1a\u81ea\u52a8\u5254\u9664\u7269\u4f53\u7684\u80cc\u9762\uff0c\u800c\u5728unity\u4e2d\u5982\u4f55\u5224\u65ad\u4e00\u4e2a\u9762\u7247\u7684\u6b63\u53cd\u5462\uff0c\u5176\u5b9e\u4ed6\u662f\u6839\u636e\u6cd5\u7ebf\u6765\u5224\u65ad\u7684\uff0c\u4e3e\u4e2a\u4f8b\u5b50\uff0c\u5f53\u4e09\u4e2a\u70b9\u8fdb\u884c\u8fde\u7ebf\u7684\u65f6\u5019\uff0c\u987a\u65f6\u9488\u4e3a\u6b63\uff0c\u53cd\u4e4b\u5219\u4e3a\u8d1f\u3002<\/p>\n\n\n\n
\"\"
Unity\u4e2d\u5982\u4f55\u5224\u65ad\u4e00\u4e2a\u9762\u7247\u7684\u6b63\u53cd<\/figcaption><\/figure>\n\n\n\n
        \u6240\u4ee5\u5728\u80cc\u9762\u7684\u9762\u7247\u7531\u4e8e\u88ab\u6444\u50cf\u673a\u5224\u65ad\u4e3a\u53cd\uff0c\u5219\u88ab\u5254\u9664\u4e86\u3002\u4e0d\u4fe1\u7684\u8bdd\u53ef\u4ee5\u968f\u4fbf\u65b0\u5efa\u4e00\u4e2aPlane\u7136\u540e\u770b\u770b\u4ed6\u7684\u6cd5\u7ebf\u65b9\u5411\uff0c\u5f53\u4ed6\u4e3a\u80cc\u9762\u7684\u65f6\u5019\u4f1a\u6444\u50cf\u673a\u5219\u4e0d\u4f1a\u6e32\u67d3\u8be5\u9762\u7247\u3002\u8fd9\u4e5f\u662f\u4e3a\u4f55\u5728AlphaTest\u4e2d\u4e3a\u4f55\u5f00\u542f\u4e86\u6df1\u5ea6\u5199\u5165\uff0c\u4f46\u80cc\u90e8\u9762\u7247\u4ecd\u7136\u4e0d\u88ab\u6e32\u67d3\u7684\u539f\u56e0\u3002\u6240\u4ee5\u5728AlphaTest\u4e2d\u5982\u4f55\u6e32\u67d3\u80cc\u90e8\u5c31\u975e\u5e38\u7b80\u5355\uff0c\u53ea\u9700\u5728Pass\u4e0bCGPROGRAM\u524d\u6dfb\u52a0Cull Off\u547d\u4ee4\uff0c\u5c31\u53ef\u4ee5\u5173\u95ed\u5254\u9664\u529f\u80fd\uff0c\u4ece\u800c\u8fbe\u5230\u6e32\u67d3\u80cc\u9762\u7684\u6548\u679c\u3002<\/p>\n\n\n\n
\"\"
\u5173\u95ed\u4e86\u5254\u9664\u529f\u80fd\u7684AlphaTest<\/figcaption><\/figure>\n\n\n\n
        \u4f46\u5f53\u6211\u4eec\u6765\u5230AlphaBlend\u7684\u900f\u660e\u6e32\u67d3\u7684\u65f6\u5019\uff0c\u6211\u4eec\u8be5\u5982\u4f55\u8fdb\u884c\u80cc\u90e8\u6e32\u67d3\u5462\uff0c\u56e0\u4e3a\u4e3a\u4e86\u8fbe\u5230Blend\u7684\u6548\u679c\uff0c\u6211\u4eec\u9700\u8981\u5173\u95ed\u6df1\u5ea6\u5199\u5165\uff0c\u4f46\u5173\u95ed\u6df1\u5ea6\u5199\u5165\u6444\u50cf\u673a\u5219\u65e0\u6cd5\u68c0\u6d4b\u5230\u80cc\u90e8\u4fe1\u606f\uff0c\u6240\u4ee5\u4f1a\u6709\u7b2c\u4e00\u6b21AlphaBlend\u7684\u6e32\u67d3\u6548\u679c\u3002\u5728\u8fd9\u91cc\u6211\u4eec\u6709\u4e00\u4e2a\u5c0ftrick\u53ef\u4ee5\u505a\uff0c\u6b63\u5982\u6211\u4eec\u5728Toon-Shading\u4e2d\u6240\u505a\u7684\u4e00\u6837\uff0c\u6211\u4eec\u5148\u8fdb\u884c\u4e00\u6b21\u80cc\u90e8\u6e32\u67d3\uff0c\u518d\u8fdb\u884c\u6b63\u9762\u6e32\u67d3\u5c31\u53ef\u4ee5\u8fbe\u5230\u6211\u4eec\u7684\u6548\u679c\u4e86\uff0c\u4f46\u503c\u5f97\u6ce8\u610f\u7684\u662f\uff0c\u7531\u4e8e\u6211\u4eec\u5173\u95ed\u4e86\u6df1\u5ea6\u68c0\u6d4b\u6240\u4ee5\u6e32\u67d3\u987a\u5e8f\u5c31\u5f88\u91cd\u8981\u3002\u4ee5\u4e0a\u7684\u6e32\u67d3\u601d\u8def\u7684\u4f2a\u4ee3\u7801\u5982\u4e0b<\/p>\n\n\n\n
...\nPass{\n   ...\n   Cull Front\n   ...\n}\nPass{\n   ...\n   Cull Back\n   ...\n}<\/code><\/pre>\n\n\n\n
        \u6240\u4ee5\u6211\u4eec\u5b8c\u6574\u7684AlphaBlend\u6e32\u67d3\u4ee3\u7801\u5982\u4e0b<\/p>\n\n\n
\/\/ Upgrade NOTE: replaced '_Object2World' with 'unity_ObjectToWorld'

Shader \"Custom\/AlphaBlendShader\"
{
    Properties
    {
        _Color (\"Color\", Color) = (1,1,1,1)
        _MainTex (\"Main Texture\", 2D) = \"white\" {}
        _AlphaScale (\"AlphaScale\", Range(0,1)) = 0.5
    }
    SubShader
    {
        Tags{\"Queue\"=\"Transparent\" \"IgnoreProjector\"=\"True\" \"RenderType\"=\"Transparent\"}
        Pass{
            Tags{\"LightMode\"=\"ForwardBase\"}
            ZWrite Off 
            Blend SrcAlpha OneMinusSrcAlpha
            Cull Front
            CGPROGRAM
            #pragma vertex vert 
            #pragma fragment frag 
            #include \"UnityCG.cginc\"
            #include \"Lighting.cginc\"

            fixed4 _Color;
            sampler2D _MainTex;
            float4 _MainTex_ST;
            float _AlphaScale;

            struct a2v{
                float4 vertex:POSITION;
                float3 normal:NORMAL;
                float4 texcoord:TEXCOORD0;
            };

            struct v2f{
                float4 pos:SV_POSITION;
                float3 worldNormal:TEXCOORD0;
                float3 worldPos:TEXCOORD1;
                float2 uv:TEXCOORD2;
            };

            v2f vert(a2v v){
                v2f o;
                o.pos=UnityObjectToClipPos(v.vertex);
                o.worldNormal=UnityObjectToWorldNormal(v.normal);
                o.worldPos=mul(unity_ObjectToWorld,v.vertex).xyz;

                o.uv=TRANSFORM_TEX(v.texcoord,_MainTex);
                return o;


            }

            fixed4 frag(v2f i):SV_TARGET{
                fixed3 worldNormal=normalize(i.worldNormal);
                fixed3 worldLightDir=normalize(UnityWorldSpaceLightDir(i.worldPos));
                fixed4 texColor=tex2D(_MainTex,i.uv);

                fixed3 albedo=texColor.rgb*_Color;
                fixed3 ambient=UNITY_LIGHTMODEL_AMBIENT.xyz*albedo;

                fixed3 diffuse=_LightColor0.rgb*ambient*max(0,dot(worldNormal,worldLightDir));

                return fixed4(diffuse+ambient,texColor.a*_AlphaScale);
            }
            ENDCG
        }
        Pass{
            Tags{\"LightMode\"=\"ForwardBase\"}
            ZWrite Off 
            Blend SrcAlpha OneMinusSrcAlpha
            Cull Back
            CGPROGRAM
            #pragma vertex vert 
            #pragma fragment frag 
            #include \"UnityCG.cginc\"
            #include \"Lighting.cginc\"

            fixed4 _Color;
            sampler2D _MainTex;
            float4 _MainTex_ST;
            float _AlphaScale;

            struct a2v{
                float4 vertex:POSITION;
                float3 normal:NORMAL;
                float4 texcoord:TEXCOORD0;
            };

            struct v2f{
                float4 pos:SV_POSITION;
                float3 worldNormal:TEXCOORD0;
                float3 worldPos:TEXCOORD1;
                float2 uv:TEXCOORD2;
            };

            v2f vert(a2v v){
                v2f o;
                o.pos=UnityObjectToClipPos(v.vertex);
                o.worldNormal=UnityObjectToWorldNormal(v.normal);
                o.worldPos=mul(unity_ObjectToWorld,v.vertex).xyz;

                o.uv=TRANSFORM_TEX(v.texcoord,_MainTex);
                return o;


            }

            fixed4 frag(v2f i):SV_TARGET{
                fixed3 worldNormal=normalize(i.worldNormal);
                fixed3 worldLightDir=normalize(UnityWorldSpaceLightDir(i.worldPos));
                fixed4 texColor=tex2D(_MainTex,i.uv);

                fixed3 albedo=texColor.rgb*_Color;
                fixed3 ambient=UNITY_LIGHTMODEL_AMBIENT.xyz*albedo;

                fixed3 diffuse=_LightColor0.rgb*ambient*max(0,dot(worldNormal,worldLightDir));

                return fixed4(diffuse+ambient,texColor.a*_AlphaScale);
            }
            ENDCG
        }
    }
    FallBack \"Transparent\/Cutout\/VertexLit\"
}
<\/code><\/pre>\n\n\n
\"\"
\u6700\u7ec8\u7684\u6e32\u67d3\u6548\u679c<\/figcaption><\/figure>\n\n\n\n
    \u4ee5\u4e0a\u6211\u4eec\u7684\u900f\u660e\u5757\u7684\u6e32\u67d3\u544a\u4e00\u6bb5\u843d\u3002<\/p>\n\n\n\n
        \u63a5\u7740\u6211\u4eec\u8fdb\u884c\u9634\u5f71\u7684\u7ed8\u5236\uff0c\u5728\u7ed8\u5236\u9634\u5f71\u7684\u65f6\u5019\u6211\u4eec\u9700\u8981\u518d\u6b21\u56de\u987e\u4e00\u4e0b\u6211\u4eec\u4e4b\u524d\u63d0\u5230\u7684\u4e09\u4e2a\u9634\u5f71\u5b8f\uff0cSHADOW_COORDS\u3001TRANSFER_SHADOW\u3001SHADOW_ATTENUATION\u3002\u9996\u5148SHADOW_COORDS\u53ea\u662f\u4e00\u4e2a\u58f0\u660e\uff0c\u56e0\u4e3a\u9876\u70b9\u6570\u636e\u4e2d\u5e76\u6ca1\u6709\u9634\u5f71\u7684\u5750\u6807\u9700\u8981\u901a\u8fc7\u9876\u70b9\u7740\u8272\u5668\u8fdb\u884c\u8ba1\u7b97\uff0c\u6240\u4ee5SHADOW_COORDS\u662f\u5728v2f\u7ed3\u6784\u4f53\u4e2d\u8fdb\u884c\u58f0\u660e\u5e76\u5728\u5728\u9876\u70b9\u7740\u8272\u5668\u4e2d\u8fdb\u884c\u8ba1\u7b97\u6240\u4ee5\uff0cTRANSFER_SHADOW\u5728\u9876\u70b9\u7740\u8272\u5668\u4e2d\u8ba1\u7b97\u4e0a\u4e00\u6b65\u7684\u58f0\u660e\u7684\u9634\u5f71\u7eb9\u7406\u5750\u6807\u3002\u6240\u4ee5\uff0c\u5728\u5199\u8fd9\u90e8\u5206\u4ee3\u7801\u7684\u65f6\u5019\u8981\u6ce8\u610f\u5e26\u6709SHADOW_COORDS\u7684\u7ed3\u6784\u4f53\u5e94\u8be5\u5728\u9876\u70b9\u7740\u8272\u5668\u7684\u524d\u90e8\uff0c\u800c\u4e0d\u80fd\u50cf\u4e4b\u524d\u90a3\u6837\uff0c\u5c06V2F\u7ed3\u6784\u4f53\u653e\u5728\u9876\u70b9\u7740\u8272\u5668\u4e4b\u540e\u3002SHADOW_ATTENUATION\u5219\u662f\u8ba1\u7b97\u9634\u5f71\u7684\u8870\u51cf\uff0c\u6240\u4ee5\u8fd9\u90e8\u5206\u57fa\u672c\u4e0a\u662f\u5728\u7247\u5143\u7740\u8272\u5668\u4e4b\u4e2d\u3002\u800c\u8fd9\u4e09\u4e2a\u5b8f\u662f\u5305\u542b\u5728AutoLight.cginc\u4e4b\u4e2d\uff0c\u6240\u4ee5\u5728\u8ba1\u7b97\u9634\u5f71\u7684\u65f6\u5019\u9700\u8981\u5305\u542b\u8fd9\u4e2a\u5934\u6587\u4ef6\u3002\u4f46\u5f53SHADOW_COORDS\u4e0eTRANSFER_SHADOW\u5b9e\u9645\u4e0a\u6ca1\u6709\u4efb\u4f55\u4f5c\u7528\u7684\u65f6\u5019\uff0cSHADOW_ATTENUATION\u7684\u503c\u4f1a\u76f4\u63a5\u7b49\u4e8e1\u3002<\/p>\n\n\n\n
        \u66f4\u9700\u8981\u7684\u6ce8\u610f\u7684\u662f\uff0c\u7531\u4e8e\u8fd9\u4e9b\u5b8f\u4e2d\u4f1a\u4f7f\u7528\u4e0a\u4e0b\u6587\u53d8\u91cf\u6765\u8fdb\u884c\u8ba1\u7b97\uff0c\u6bd4\u5982SHADOW_COORDS\u4f1a\u7528v.vertex\u6216\u8005a.pos\u6765\u8ba1\u7b97\uff0c\u6240\u4ee5\u4e3a\u4e86\u80fd\u591f\u8fd9\u4e9b\u5b8f\u6b63\u5e38\u8fd0\u884c\uff0c\u6211\u4eec\u9700\u8981\u4fdd\u8bc1\u81ea\u5b9a\u4e49\u7684\u53d8\u91cf\u540d\u3002\u6240\u4ee5a2v\u7ed3\u6784\u4f53\u4e2d\u7684\u9876\u70b9\u5750\u6807\u53d8\u91cf\u540d\u5fc5\u987b\u662fvertex\uff0c\u9876\u70b9\u8fd9\u6240\u53bb\u7684\u8f93\u5165a2v\u5fc5\u987b\u547d\u540d\u4e3av\uff0cv2f\u4e2d\u9876\u70b9\u4f4d\u7f6e\u5fc5\u987b\u547d\u540d\u4e3apos\u3002<\/p>\n\n\n\n
        \u5728AlphaTest\u4e2d\u6211\u53ef\u4ee5\u76f4\u63a5\u6dfb\u52a0\u76f8\u5173\u4ee3\u7801<\/p>\n\n\n
struct v2f{
    ...
    SHADOW_COORDS(3)
    ...
};<\/code><\/pre>\n\n\n
\u8fd9\u662fv2f\u7684\u5750\u6807\u58f0\u540d\uff0c\u8fd9\u91cc\u6ce8\u610f\u4e0b\uff0c\u7531\u4e8e\u6211\u4eec\u5728\u8fd9\u7528\u7684\u662f\u7b2c\u56db\u5957\u7eb9\u7406\u5750\u6807\uff0c\u6240\u4ee5\u5185\u90e8\u51993\uff0c\u8fd8\u6709\u5c31\u662f\u8fd9\u4e2a\u5b8f\u4e0d\u9700\u8981\u6dfb\u52a0”;”<\/p>\n\n\n
v2f vert(a2v v){
    ...
    TRANSFER_SHADOW(o);
    ...
    return o;
}<\/code><\/pre>\n\n\n
\u6b64\u5904\u6211\u4eec\u5c06\u4e0a\u4e00\u6b65\u58f0\u660e\u7684\u5750\u6807\u70b9\u8f6c\u6362\u6210\u9634\u5f71\u5750\u6807\u4f5c\u4e3a\u8f93\u51fa\u3002\u8fd9\u4e2a\u5b8f\u8981\u52a0”;”<\/p>\n\n\n
fixed4 frag(v2f i):SV_Target{
    ...
    UNITY_LIGHT_ATTENUATION(atten,i,i.worldPos);
    ...
    return fixed4 (ambient,diffuse*atten,1.0)
}<\/code><\/pre>\n\n\n
\u5728\u6b64\u5904\u6211\u4eec\u7528\u4e86UNITY_LIGHT_ATTENUATION\u8fd9\u4e2a\u5b8f\uff0c\u8f93\u5165\u4e09\u4e2a\u53c2\u6570\uff0catten\u6211\u4eec\u4ee3\u7801\u4e2d\u5e76\u6ca1\u6709\u58f0\u660e\u7c7b\u578b\uff0c\u8fd9\u4e2a\u5b8f\u4f1a\u81ea\u52a8\u5e2e\u6211\u4eec\u58f0\u660e\uff0c\u53c2\u6570i\u662f\u6211\u4eec\u6574\u4e2a\u7247\u5143\u7740\u8272\u5668\u7684\u8f93\u5165\u53c2\u6570\uff0c\u8fd8\u6709\u4e0e\u5176\u76f8\u5173\u7684\u4e16\u754c\u5750\u6807\u3002\u8fd9\u4e2a\u5b8f\u7684\u8ba1\u7b97\u8fc7\u7a0b\u53ef\u4ee5\u5728AutoLight.cginc\u770b\u5230\uff0c\u5b83\u4f1a\u5c06\u7b2c\u4e8c\u4e2a\u53c2\u6570\u4f20\u9012\u7ed9SHADOW_ATTENUATION\uff0c\u6765\u8ba1\u7b97\u9634\u5f71\u503c\u3002<\/p>\n\n\n\n
\"\"
\u6dfb\u52a0\u9634\u5f71\u540e\u7684alphatest\u6e32\u67d3\u6548\u679c<\/figcaption><\/figure>\n\n\n\n
\u63a5\u4e0b\u6765\u6211\u4eec\u5728\u6211\u4eec\u7684\u6df7\u5408\u900f\u660e\u4e2d\u6bcf\u4e00\u4e2apass\u91cc\u52a0\u5165\u4e0a\u8ff0\u4ee3\u7801\uff0c\u5c31\u80fd\u5f97\u5230\u6df7\u5408\u900f\u660e\u7684\u9634\u5f71\u3002<\/p>\n\n\n\n
\"\"<\/figure>\n","protected":false},"excerpt":{"rendered":"
\u9996\u5148\u5728\u8fdb\u884c\u4ee3\u7801\u7f16\u5199\u524d\uff0c\u6211\u4eec\u8981\u4e86\u89e3\u6e32\u67d3\u7684\u4e00\u4e2a\u673a\u5236\uff0c\u5c31\u662fTas\u5e8f\u5217\uff0c\u7ed9Subshader\u4e0b\u6dfb\u52a0\u6807\u7b7e\u53ef\u4ee5\u5b9a\u4e49\u6574\u4e2aSu … \u7ee7\u7eed\u9605\u8bfbShader\u5165\u95e8\u20146.\u900f\u660e\u5ea6\u6d4b\u8bd5\u4e0e\u9634\u5f71<\/span> →<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":336,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[2,1],"tags":[],"class_list":["post-246","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-study-note","category-uncategorized"],"_links":{"self":[{"href":"https:\/\/meecarlo.com\/old\/wp-json\/wp\/v2\/posts\/246","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/meecarlo.com\/old\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/meecarlo.com\/old\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/meecarlo.com\/old\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/meecarlo.com\/old\/wp-json\/wp\/v2\/comments?post=246"}],"version-history":[{"count":3,"href":"https:\/\/meecarlo.com\/old\/wp-json\/wp\/v2\/posts\/246\/revisions"}],"predecessor-version":[{"id":585,"href":"https:\/\/meecarlo.com\/old\/wp-json\/wp\/v2\/posts\/246\/revisions\/585"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/meecarlo.com\/old\/wp-json\/"}],"wp:attachment":[{"href":"https:\/\/meecarlo.com\/old\/wp-json\/wp\/v2\/media?parent=246"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/meecarlo.com\/old\/wp-json\/wp\/v2\/categories?post=246"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/meecarlo.com\/old\/wp-json\/wp\/v2\/tags?post=246"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}