{"id":2548,"date":"2022-01-09T01:41:00","date_gmt":"2022-01-08T17:41:00","guid":{"rendered":"http:\/\/www.u3d8.com\/?p=2548"},"modified":"2022-01-12T10:36:32","modified_gmt":"2022-01-12T02:36:32","slug":"shader%e9%a1%b6%e7%82%b9-%e7%89%87%e5%85%83%e7%9d%80%e8%89%b2%e5%99%a8","status":"publish","type":"post","link":"http:\/\/www.u3d8.com\/?p=2548","title":{"rendered":"Shader\u9876\u70b9\/\u7247\u5143\u7740\u8272\u5668"},"content":{"rendered":"\n<h2>\u9876\u70b9\/\u7247\u5143\u7740\u8272\u5668<\/h2>\n\n\n\n<p>\u5728\u6574\u4e2a\u6e32\u67d3\u6d41\u7a0b\uff0c\u9876\u70b9\u4e0e\u7247\u5143\u9636\u6bb5\u662f\u53ef\u7f16\u7a0b\u7684\uff0c\u4e5f\u5c31\u662f\u5728\u6b64\u9636\u6bb5\u6211\u4eec\u624d\u53ef\u4ee5\u5bf9\u6a21\u578b\u7684\u6e32\u67d3\u8fc7\u7a0b\u8fdb\u884c\u4fee\u6539\uff0c\u8fbe\u5230\u6211\u4eec\u60f3\u8981\u7684\u6e32\u67d3\u6548\u679c\u3002<\/p>\n\n\n\n<p>\u9876\u70b9\u3001\u7247\u5143\u7740\u8272\u5668\u5b9a\u4e49\u5728SubShader\u4e2d\u7684Pass\u5757\u4e2d\uff0c\u7f16\u5199\u9876\u70b9\u3001\u7247\u5143\u7740\u8272\u5668\u66f4\u4e3a\u590d\u6742\uff0c\u4f46\u662f\u7075\u6d3b\u6027\u66f4\u9ad8\uff0c\u6211\u4eec\u53ef\u4ee5\u63a7\u5236\u7684\u7ec6\u8282\u66f4\u591a\u3002<\/p>\n\n\n\n<h2>\u793a\u4f8b<\/h2>\n\n\n\n<pre class=\"wp-block-code\"><code>Shader \"CS02\/MiniShader\" \/\/Shader\u7684\u771f\u6b63\u540d\u5b57  \u53ef\u4ee5\u662f\u8def\u5f84\u5f0f\u7684\u683c\u5f0f\r\n{\r\n    \/*\u6750\u8d28\u7403\u53c2\u6570\u53caUI\u9762\u677f\r\n    https:&#47;&#47;docs.unity3d.com\/cn\/current\/Manual\/SL-Properties.html\r\n    https:\/\/docs.unity3d.com\/cn\/current\/ScriptReference\/MaterialPropertyDrawer.html\r\n    https:\/\/zhuanlan.zhihu.com\/p\/93194054\r\n    *\/\r\n    Properties \r\n    {\r\n        _MainTex (\"Texture\", 2D) = \"\" {}\r\n        _Float(\"Float\", Float) = 0.0\r\n        _Slider(\"Slider\", Range(0.0,1.0)) = 0.07\r\n        _Vector(\"Vector\", Vector) = (.34, .85, .92, 1) \r\n    }\r\n    \/*\r\n    \u8fd9\u662f\u4e3a\u4e86\u8ba9\u4f60\u53ef\u4ee5\u5728\u4e00\u4e2aShader\u6587\u4ef6\u4e2d\u5199\u591a\u79cd\u7248\u672c\u7684Shader\uff0c\u4f46\u53ea\u6709\u4e00\u4e2a\u4f1a\u88ab\u4f7f\u7528\u3002\r\n    \u63d0\u4f9b\u591a\u4e2a\u7248\u672c\u7684SubShader\uff0cUnity\u53ef\u4ee5\u6839\u636e\u5bf9\u5e94\u5e73\u53f0\u9009\u62e9\u6700\u5408\u9002\u7684Shader\r\n    \u6216\u8005\u914d\u5408LOD\u673a\u5236\u4e00\u8d77\u4f7f\u7528\u3002\r\n    \u4e00\u822c\u5199\u4e00\u4e2a\u5373\u53ef\r\n    *\/\r\n    SubShader\r\n    {\r\n        \/*\r\n        \u6807\u7b7e\u5c5e\u6027\uff0c\u6709\u4e24\u79cd\uff1a\u4e00\u79cd\u662fSubShader\u5c42\u7ea7\uff0c\u4e00\u79cd\u5728Pass\u5c42\u7ea7\r\n        https:\/\/docs.unity3d.com\/cn\/current\/Manual\/SL-SubShaderTags.html\r\n        https:\/\/docs.unity3d.com\/cn\/current\/Manual\/SL-PassTags.html\r\n        *\/\r\n        Tags { \"RenderType\"=\"Opaque\" } \r\n        \/*\r\n        Cull \u6709\u4e09\u79cd\uff1aOff\u3001Back\u3001Front\r\n        \u5206\u522b\u4e3a\uff1a\u6b63\u53cd\u90fd\u4e0d\u5254\u9664\u3001\u80cc\u9762\u5254\u9664\u3001\u6b63\u9762\u5254\u9664\r\n        *\/\r\n        Cull Off\r\n        \/*\r\n        Pass\u91cc\u9762\u7684\u5185\u5bb9Shader\u4ee3\u7801\u771f\u6b63\u8d77\u4f5c\u7528\u7684\u5730\u65b9\uff0c\r\n        \u4e00\u4e2aPass\u5bf9\u5e94\u4e00\u4e2a\u771f\u6b63\u610f\u4e49\u4e0a\u8fd0\u884c\u5728GPU\u4e0a\u7684\u5b8c\u6574\u7740\u8272\u5668(Vertex-Fragment Shader)\r\n        \u4e00\u4e2aSubShader\u91cc\u9762\u53ef\u4ee5\u5305\u542b\u591a\u4e2aPass\uff0c\u6bcf\u4e2aPass\u4f1a\u88ab\u6309\u987a\u5e8f\u6267\u884c\r\n        *\/\r\n        Pass \r\n        {\r\n            CGPROGRAM  \/\/ Shader\u4ee3\u7801\u4ece\u8fd9\u91cc\u5f00\u59cb\r\n            #pragma vertex vert \/\/\u6307\u5b9a\u4e00\u4e2a\u540d\u4e3a\"vert\"\u7684\u51fd\u6570\u4e3a\u9876\u70b9Shader\r\n            #pragma fragment frag \/\/\u6307\u5b9a\u4e00\u4e2a\u540d\u4e3a\"frag\"\u51fd\u6570\u4e3a\u7247\u5143Shader\r\n            #include \"UnityCG.cginc\"  \/\/\u5f15\u7528Unity\u5185\u7f6e\u7684\u6587\u4ef6\uff0c\u5f88\u65b9\u4fbf\uff0c\u6709\u5f88\u591a\u73b0\u6210\u7684\u51fd\u6570\u63d0\u4f9b\u4f7f\u7528\r\n\r\n            \/\/https:\/\/docs.unity3d.com\/Manual\/SL-VertexProgramInputs.html\r\n            struct a2v  \/\/CPU\u5411\u9876\u70b9Shader\u63d0\u4f9b\u7684\u6a21\u578b\u6570\u636e\r\n            {\r\n                \/\/\u5192\u53f7\u540e\u9762\u7684\u662f\u7279\u5b9a\u8bed\u4e49\u8bcd\uff0c\u544a\u8bc9CPU\u9700\u8981\u54ea\u4e9b\u7c7b\u578b\u7684\u6570\u636e\r\n                float4 vertex : POSITION; \/\/\u6a21\u578b\u7a7a\u95f4\u9876\u70b9\u5750\u6807\r\n                half2 texcoord0 : TEXCOORD0; \/\/\u7b2c\u4e00\u5957\u7eb9\u7406\u5750\u6807\uff08UV\uff09\r\n                half2 texcoord1 : TEXCOORD1; \/\/\u7b2c\u4e8c\u5957\u7eb9\u7406\u5750\u6807\uff08UV\uff09\r\n                half2 texcoord2 : TEXCOORD2; \/\/\u7b2c\u4e09\u5957\u7eb9\u7406\u5750\u6807\uff08UV\uff09\r\n                half2 texcoord4 : TEXCOORD3; \/\/\u7b2c\u56db\u5957\u7eb9\u7406\u5750\u6807\uff08UV\uff09\u6a21\u578b\u6700\u591a\u53ea\u80fd\u67094\u5957UV\r\n\r\n                half4 color : COLOR; \/\/\u9876\u70b9\u989c\u8272\r\n                half3 normal : NORMAL; \/\/\u9876\u70b9\u6cd5\u7ebf\r\n                half4 tangent : TANGENT; \/\/\u9876\u70b9\u5207\u7ebf(\u6a21\u578b\u5bfc\u5165Unity\u540e\u81ea\u52a8\u8ba1\u7b97\u5f97\u5230)\r\n            };\r\n\r\n            struct v2f  \/\/\u81ea\u5b9a\u4e49\u6570\u636e\u7ed3\u6784\u4f53\uff0c\u9876\u70b9\u7740\u8272\u5668\u8f93\u51fa\u7684\u6570\u636e\uff0c\u4e5f\u662f\u7247\u5143\u7740\u8272\u5668\u8f93\u5165\u6570\u636e\r\n            {\r\n                float4 pos : SV_POSITION; \/\/\u8f93\u51fa\u88c1\u526a\u7a7a\u95f4\u4e0b\u7684\u9876\u70b9\u5750\u6807\u6570\u636e\uff0c\u7ed9\u5149\u6805\u5316\u4f7f\u7528\uff0c\u5fc5\u987b\u8981\u5199\u7684\u6570\u636e\r\n                float2 uv : TEXCOORD0; \/\/\u81ea\u5b9a\u4e49\u6570\u636e\u4f53\r\n                \/\/\u6ce8\u610f\u8ddf\u4e0a\u65b9\u7684TEXCOORD\u7684\u610f\u4e49\u662f\u4e0d\u4e00\u6837\u7684\uff0c\u4e0a\u65b9\u4ee3\u8868\u7684\u662fUV\uff0c\u8fd9\u91cc\u53ef\u4ee5\u662f\u4efb\u610f\u6570\u636e\u3002\r\n                \/\/\u63d2\u503c\u5668\uff1a\u8f93\u51fa\u540e\u4f1a\u88ab\u5149\u6805\u5316\u8fdb\u884c\u63d2\u503c\uff0c\u800c\u540e\u4f5c\u4e3a\u8f93\u5165\u6570\u636e\uff0c\u8fdb\u5165\u7247\u5143Shader\r\n                \/\/\u6700\u591a\u53ef\u4ee5\u519916\u4e2a\uff1aTEXCOORD0 ~ TEXCOORD15\u3002\r\n                float3 normal : TEXCOORD1;\r\n            };\r\n\r\n            \/*\r\n            Shader\u5185\u7684\u53d8\u91cf\u58f0\u660e\uff0c\u5982\u679c\u8ddf\u4e0a\u9762Properties\u6a21\u5757\u5185\u7684\u53c2\u6570\u540c\u540d\uff0c\u5c31\u53ef\u4ee5\u4ea7\u751f\u94fe\u63a5\r\n            *\/\r\n            sampler2D _MainTex;\r\n            float4 _MainTex_ST;\r\n            \/\/Unity\u5185\u7f6e\u53d8\u91cf\uff1ahttps:\/\/docs.unity3d.com\/560\/Documentation\/Manual\/SL-UnityShaderVariables.html\r\n            \/\/Unity\u5185\u7f6e\u51fd\u6570\uff1ahttps:\/\/docs.unity3d.com\/560\/Documentation\/Manual\/SL-BuiltinFunctions.html\r\n            \r\n            \/\/\u9876\u70b9Shader\r\n            v2f vert (a2v v)\r\n            {\r\n                v2f o;\r\n                float4 pos_world = mul(unity_ObjectToWorld, v.vertex);\r\n                float4 pos_view = mul(UNITY_MATRIX_V, pos_world);\r\n                float4 pos_clip = mul(UNITY_MATRIX_P, pos_view);\r\n                o.pos = pos_clip;\r\n                \/\/o.pos = mul(UNITY_MATRIX_MVP, v.vertex);\r\n                \/\/o.pos = UnityObjectToClipPos(v.vertex);\r\n                o.uv = v.texcoord0 * _MainTex_ST.xy + _MainTex_ST.zw;\r\n                \/\/o.uv = TRANSFORM_TEX(v.uv, _MainTex);\r\n                o.normal = v.normal;\r\n                return o;\r\n            }\r\n            \/\/\u7247\u5143Shader\r\n            half4 frag (v2f f) : SV_Target \/\/SV_Target\u8868\u793a\u4e3a\uff1a\u7247\u5143Shader\u8f93\u51fa\u7684\u76ee\u6807\u5730\uff08\u6e32\u67d3\u76ee\u6807\uff09\r\n            {\r\n                \/\/fixed4 col = tex2D(_MainTex, f.uv);\r\n                half4 col = float4(f.uv,0.0,0.0);\r\n                return col;\r\n            }\r\n            ENDCG \/\/ Shader\u4ee3\u7801\u4ece\u8fd9\u91cc\u7ed3\u675f\r\n        }\r\n    }\r\n}\r<\/code><\/pre>\n\n\n\n<h2>\u89e3\u91ca<\/h2>\n\n\n\n<h3>#pragma vertex vert<\/h3>\n\n\n\n<p>\u5b9a\u4e49\u7528\u6765\u5904\u7406\u9876\u70b9\u7740\u8272\u5668\u7684\u65b9\u6cd5\u3002vert\u4e3a\u65b9\u6cd5\u540d\uff0c\u53ef\u4fee\u6539<\/p>\n\n\n\n<h3>#pragma fragment frag<\/h3>\n\n\n\n<p>\u5b9a\u4e49\u7528\u6765\u5904\u7406\u7247\u5143\u7740\u8272\u5668\u7684\u65b9\u6cd5\u3002frag\u4e3a\u65b9\u6cd5\u540d\uff0c\u53ef\u4fee\u6539<\/p>\n\n\n\n<h3>a2v<\/h3>\n\n\n\n<p>\u7ed3\u6784\u4f53\uff0c \u7528\u6765\u5b9a\u4e49\u9876\u70b9\u7740\u8272\u5668\u7684\u8f93\u5165\uff0c\u5305\u542b\u4e86\u4e00\u4e9b\u56fa\u5b9a\u8bed\u4e49\u5982\u4e0b<\/p>\n\n\n\n<ul><li>POSITION \u662f\u9876\u70b9\u4f4d\u7f6e\uff0c\u901a\u5e38\u4e3a float3 \u6216 float4\u3002<\/li><li>NORMAL \u662f\u9876\u70b9\u6cd5\u7ebf\uff0c\u901a\u5e38\u4e3a float3\u3002<\/li><li>TEXCOORD0 \u662f\u7b2c\u4e00\u4e2a UV \u5750\u6807\uff0c\u901a\u5e38\u4e3a float2\u3001float3 \u6216 float4\u3002<\/li><li>TEXCOORD1\u3001TEXCOORD2 \u548c TEXCOORD3 \u5206\u522b\u662f\u7b2c 2\u3001\u7b2c 3 \u548c\u7b2c 4 \u4e2a UV \u5750\u6807\u3002<\/li><li>TANGENT \u662f\u5207\u7ebf\u77e2\u91cf\uff08\u7528\u4e8e\u6cd5\u7ebf\u8d34\u56fe\uff09\uff0c\u901a\u5e38\u4e3a float4\u3002<\/li><li>COLOR \u662f\u6bcf\u9876\u70b9\u989c\u8272\uff0c\u901a\u5e38\u4e3a float4\u3002<\/li><\/ul>\n\n\n\n<h3>UnityObjectToClipPos<\/h3>\n\n\n\n<p>Unity\u5185\u7f6e\u51fd\u6570\uff0c\u7528\u6765\u5c06\u9876\u70b9\u5750\u6807\u4ece\u6a21\u578b\u7a7a\u95f4\u8f6c\u6362\u5230\u88c1\u526a\u7a7a\u95f4<\/p>\n\n\n\n<p>\u6a21\u578b\u7a7a\u95f4\u8f6c\u4e3a\u88c1\u526a\u7a7a\u95f4\u5b9e\u9645\u9700\u8981\u5982\u4e0b\u6b65\u9aa4<\/p>\n\n\n\n<blockquote class=\"wp-block-quote\"><p>\u6a21\u578b\u7a7a\u95f4-&gt;\u4e16\u754c\u7a7a\u95f4-&gt;\u76f8\u673a\u7a7a\u95f4-&gt;\u88c1\u526a\u7a7a\u95f4<\/p><\/blockquote>\n\n\n\n<p>Unity\u63d0\u4f9b\u7684\u7a7a\u95f4\u53d8\u6362\u51fd\u6570<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table><tbody><tr><td>UNITY_MATRIX_MVP<\/td><td>\u5f53\u524d\u6a21\u578b * \u89c6\u56fe * \u6295\u5f71\u77e9\u9635\u3002<\/td><\/tr><tr><td>UNITY_MATRIX_MV<\/td><td>\u5f53\u524d\u6a21\u578b * \u89c6\u56fe\u77e9\u9635\u3002<\/td><\/tr><tr><td>UNITY_MATRIX_V<\/td><td>\u5f53\u524d\u89c6\u56fe\u77e9\u9635\u3002<\/td><\/tr><tr><td>UNITY_MATRIX_P<\/td><td>\u5f53\u524d\u6295\u5f71\u77e9\u9635\u3002<\/td><\/tr><tr><td>UNITY_MATRIX_VP<\/td><td>\u5f53\u524d\u89c6\u56fe * \u6295\u5f71\u77e9\u9635\u3002<\/td><\/tr><tr><td>UNITY_MATRIX_T_MV<\/td><td>\u6a21\u578b\u8f6c\u7f6e * \u89c6\u56fe\u77e9\u9635\u3002<\/td><\/tr><tr><td>UNITY_MATRIX_IT_MV<\/td><td>\u6a21\u578b\u9006\u8f6c\u7f6e * \u89c6\u56fe\u77e9\u9635\u3002<\/td><\/tr><tr><td>unity_ObjectToWorld<\/td><td>\u5f53\u524d\u6a21\u578b\u77e9\u9635\u3002<\/td><\/tr><tr><td>unity_WorldToObject<\/td><td>\u5f53\u524d\u4e16\u754c\u77e9\u9635\u7684\u9006\u77e9\u9635\u3002<\/td><\/tr><\/tbody><\/table><\/figure>\n","protected":false},"excerpt":{"rendered":"<p>\u9876\u70b9\/\u7247\u5143\u7740\u8272\u5668 \u5728\u6574\u4e2a\u6e32\u67d3\u6d41\u7a0b\uff0c\u9876\u70b9\u4e0e\u7247\u5143\u9636\u6bb5\u662f\u53ef\u7f16\u7a0b\u7684\uff0c\u4e5f\u5c31\u662f\u5728\u6b64\u9636\u6bb5\u6211\u4eec\u624d &hellip; <a href=\"http:\/\/www.u3d8.com\/?p=2548\">\u7ee7\u7eed\u9605\u8bfb <span class=\"meta-nav\">&rarr;<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[419],"tags":[],"_links":{"self":[{"href":"http:\/\/www.u3d8.com\/index.php?rest_route=\/wp\/v2\/posts\/2548"}],"collection":[{"href":"http:\/\/www.u3d8.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.u3d8.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.u3d8.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/www.u3d8.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=2548"}],"version-history":[{"count":7,"href":"http:\/\/www.u3d8.com\/index.php?rest_route=\/wp\/v2\/posts\/2548\/revisions"}],"predecessor-version":[{"id":2568,"href":"http:\/\/www.u3d8.com\/index.php?rest_route=\/wp\/v2\/posts\/2548\/revisions\/2568"}],"wp:attachment":[{"href":"http:\/\/www.u3d8.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=2548"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.u3d8.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=2548"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.u3d8.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=2548"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}