{"id":3631,"date":"2021-01-24T13:36:21","date_gmt":"2021-01-24T05:36:21","guid":{"rendered":"http:\/\/blog.coolcoding.cn\/?p=3631"},"modified":"2021-01-24T13:36:21","modified_gmt":"2021-01-24T05:36:21","slug":"%e8%af%91real-shading-in-unreal-engine-4%ef%bc%88ue4%e4%b8%ad%e7%9a%84%e7%9c%9f%e5%ae%9e%e6%b8%b2%e6%9f%932","status":"publish","type":"post","link":"https:\/\/blog.coolcoding.cn\/?p=3631","title":{"rendered":"[\u8bd1]Real Shading in Unreal Engine 4\uff08UE4\u4e2d\u7684\u771f\u5b9e\u6e32\u67d3)(2)"},"content":{"rendered":"\n<p><a href=\"https:\/\/zhuanlan.zhihu.com\/p\/125459331\">https:\/\/zhuanlan.zhihu.com\/p\/125459331<\/a><\/p>\n\n\n\n<p> \u5229\u7528\u5047\u671f\u63a5\u7740\u628a\u5269\u4e0b\u7684\u90e8\u5206\u641e\u5b8c\u5427\uff0c\u5176\u5b9e\uff0c\u7eaf\u7cb9\u7684\u7ffb\u8bd1\u5e94\u8be5\u8fd8\u662f\u6bd4\u8f83\u7b80\u5355\u7684\uff0c\u4f46\u662f\uff0c\u4e3a\u4e86\u66f4\u597d\u5730\u7406\u89e3\uff0c\u6211\u4e00\u822c\u90fd\u4f1a\u591a\u627e\u4e00\u4e9b\u8d44\u6599\u6765\u8fdb\u884c\u4e92\u76f8\u5370\u8bc1\u3002\u5728\u4e0a\u9762\u4e00\u90e8\u5206Shader Model\u7684\u6539\u53d8\u8fc7\u7a0b\u4e2d\uff0c\u6211\u4e3b\u8981\u662f\u53c2\u8003\u4e86\u4e00\u4e9bPBR\u7684\u5b9e\u73b0\u539f\u7406\u7684\u8bba\u6587\uff0c\u4e0b\u9762\u5173\u4e8e\u6750\u8d28\u548cLight\u8fd9\u90e8\u5206\u7684\uff0c\u6211\u628a\u300a\u5bd2\u971c\u300b\u5f15\u64ce\u9488\u5bf9PBR\u4fee\u6539\u7684\u8bba\u6587\u653e\u5728\u4e00\u8d77\u5bf9\u7167\u7740\u770b\u3002\u611f\u89c9\u300a\u5bd2\u971c\u300b\u90a3\u8fb9\u5199\u7684\u4f1a\u66f4\u7ec6\u81f4\uff0cUE\u8fd9\u8fb9\uff0c\u611f\u89c9\u6709\u70b9\u4e3a\u4e86\u5199\u8fd9\u4e2a\u4e1c\u897f\u800c\u5199\u8fd9\u4e2a\u4e1c\u897f\uff0c\u5982\u679c\u5927\u5bb6\u770b\u4e0d\u592a\u61c2\uff0c\u63a8\u8350\u5927\u5bb6\u53bb\u9605\u8bfbEA\u7684\u5bd2\u971c\u5f15\u64ce\u7684\u8bba\u6587\u3002\u300aMoving Frostbite to Physically Based Rendering 3.0\u300b\uff0c\u8fd9\u662f\u5728SiGGRAPH 2014\u5e74\u5927\u4f1a\u53d1\u8868\u7684\u3002\u597d\u4e86\uff0c\u5e9f\u8bdd\u4e0d\u591a\u8bf4\uff0c\u5f00\u59cb\u5e72\u6d3b\u3002 <\/p>\n\n\n\n<h2 class=\"wp-block-heading\">2.3\u3001<strong>\u6750\u8d28\u6a21\u578b-Material Mode<\/strong><\/h2>\n\n\n\n<p>\u6211\u4eec\u7684\u6750\u8d28\u6a21\u5f0f\u662f\u8fea\u58eb\u5c3c\u7684\u6750\u8d28\u6a21\u578b\u7684\u7b80\u5316\u7248\u672c\uff0c\u7740\u773c\u4e8e\u5b9e\u65f6\u6e32\u67d3\u7684\u6548\u7387\u3002\u9650\u5236\u53c2\u6570\u7684\u6570\u91cf\u5bf9\u4e8e\u4f18\u5316G-Buffer\u7684\u7a7a\u95f4\u5341\u5206\u91cd\u8981\uff0c\u51cf\u5c11\u8d34\u56fe\u7684\u7a7a\u95f4\u5360\u7528\u548c\u5b58\u53d6\uff0c\u5e76\u4e14\u6700\u5c0f\u5316\u5728\u50cf\u7d20\u7740\u8272\u5668\u4e2d\u6df7\u5408\u6750\u8d28\u56fe\u5f62\u7684\u6210\u672c\u3002<\/p>\n\n\n\n<p>\u4e0b\u9762\u662f\u6211\u4eec\u7684\u57fa\u7840\u6750\u8d28\u6a21\u578b\uff1a<\/p>\n\n\n\n<ul><li>\u57fa\u672c\u989c\u8272BaseColor\u3000 \u5355\u4e00\u989c\u8272\u3002\u66f4\u5bb9\u6613\u7406\u89e3\u7684\u6982\u5ff5<\/li><li>\u91d1\u5c5e\u5ea6Metallic\u3000\u3000\u3000\u3000\u4e0d\u9700\u8981\u7406\u89e3\u7535\u4ecb\u8d28\u548c\u5bfc\u4f53\u7684\u53cd\u5c04\u7387\uff0c\u66f4\u5c11\u7684\u9519\u8bef\u7a7a\u95f4<\/li><li>\u7c97\u7cd9\u5ea6Roughness\u3000\u3000 \u5b83\u7684\u6982\u5ff5\u975e\u5e38\u6e05\u6670\uff0c\u76f8\u53cd\u7684\u662f\u5149\u6cfd\u5ea6gloss\u901a\u5e38\u9700\u8981\u89e3\u91ca<\/li><li>Cavity \u7528\u4e8e\u8868\u793a\u5c0f\u89c4\u6a21\u7684\u906e\u853d\uff08\u8fd9\u4e2a\u4f3c\u4e4e\u5728\u6700\u7ec8\u7684\u7248\u672c\u4e0a\uff0c\u5e76\u6ca1\u6709\u51fa\u73b0\uff09<\/li><\/ul>\n\n\n\n<p><strong>\u57fa\u672c\u989c\u8272\uff0c\u91d1\u5c5e\u5ea6\uff0c\u7c97\u7cd9\u5ea6<\/strong>\u4e0e\u8fea\u58eb\u5c3c\u7684\u6a21\u578b\u76f8\u540c\uff0c\u4f46\u662fCavity\u53c2\u6570\u5e76\u6ca1\u6709\u5728Disney\u7684\u6a21\u578b\u4e2d\u88ab\u63d0\u53ca\u3002\u6240\u4ee5\u6211\u4eec\u6765\u91cd\u70b9\u4ecb\u7ecd\u4e00\u4e0bCavity\u3002Cavity\u7528\u4e8e\u6307\u5b9a\u6bd4\u8fd0\u884c\u65f6\u9634\u5f71\u7cfb\u7edf\u80fd\u591f\u5904\u7406\u7684\u51e0\u4f55\u4f53\u66f4\u5c0f\u7684\u9634\u5f71\uff0c\u901a\u5e38\u662f\u7531\u4e8e\u51e0\u4f55\u4f53\u53ea\u5b58\u5728\u4e8e\u6cd5\u7ebf\u56fe\u4e2d\uff08<strong>\u8bd1\u8005\u6ce8<\/strong>\uff1a\u8fd9\u53e5\u8bdd\u7ffb\u8bd1\u7684\u6bd4\u8f83\u7ed5\u3002\u5176\u5b9e\u5e94\u8be5\u662f\u8bf4\uff0c\u7531\u4e8e\u8fd9\u4e9b\u51e0\u4f55\u4f53\u7684\u6e32\u67d3\u5f88\u591a\u90fd\u662f\u4f9d\u8d56\u6cd5\u7ebf\u8d34\u56fe\u6765\u8868\u73b0\u4e00\u4e9b\u7ec6\u8282\uff0c\u4f46\u662f\uff0cCavity\u8981\u6c42\u7684\u4f1a\u66f4\u7cbe\u7ec6\u3002\uff09\u3002\u4f8b\u5982\u5730\u677f\u677f\u4e4b\u95f4\u7684\u88c2\u7f1d\u6216\u8863\u670d\u7684\u7f1d\u9699\u3002<\/p>\n\n\n\n<p>\u6700\u503c\u5f97\u6ce8\u610f\u7684\u9057\u6f0f\u662fSpecular\u53c2\u6570\u3002\u5b9e\u9645\u4e0a\uff0c\u6211\u4eec\u5728\u5b8c\u6210Infiltrator\u6f14\u793a\u4e4b\u524d\u4e00\u76f4\u5728\u7ee7\u7eed\u4f7f\u7528\u8fd9\u4e2a\u53c2\u6570\uff0c\u4f46\u6700\u7ec8\u6211\u4eec\u5e76\u4e0d\u559c\u6b22\u5b83\u3002\u9996\u5148\uff0c\u6211\u4eec\u89c9\u5f97 &#8220;specular &#8220;\u662f\u4e00\u4e2a\u5f88\u7cdf\u7cd5\u7684\u53c2\u6570\u540d\u79f0\uff0c\u5b83\u9020\u6210\u4e86\u5f88\u591a\u6df7\u4e71\uff0c\u800c\u4e14\u5728\u4e00\u5b9a\u7a0b\u5ea6\u4e0a\u4e0d\u5229\u4e8e\u4ece\u827a\u672f\u5bb6\u63a7\u5236\u955c\u9762\u5f3a\u5ea6\u5230\u63a7\u5236\u7c97\u7cd9\u5ea6\u7684\u8fc7\u6e21\u3002\u827a\u672f\u5bb6\u548c\u56fe\u5f62\u7a0b\u5e8f\u5458\u90fd\u666e\u904d\u5fd8\u8bb0\u4e86\u5b83\u7684\u8303\u56f4\uff0c\u4ee5\u4e3a\u9ed8\u8ba4\u503c\u662f1\uff0c\u800c\u5b9e\u9645\u9ed8\u8ba4\u503c\u662fBurley\u76840.5\uff08\u5bf9\u5e944%\u7684\u53cd\u5c04\u7387\uff09\u3002Specular\u88ab\u6709\u6548\u4f7f\u7528\u7684\u6848\u4f8b\u51e0\u4e4e\u90fd\u662f\u4e3a\u4e86\u5c0f\u8303\u56f4\u7684\u9634\u5f71\u5904\u7406\u3002\u6211\u4eec\u53d1\u73b0\u53ef\u53d8\u6298\u5c04\u7387\uff08IOR\uff09\u5bf9\u4e8e\u975e\u91d1\u5c5e\u6765\u8bf4\u5e76\u4e0d\u91cd\u8981\uff0c\u6240\u4ee5\u6211\u4eec\u6700\u8fd1\u7528\u66f4\u5bb9\u6613\u7406\u89e3\u7684Cavity\u53c2\u6570\u53d6\u4ee3\u4e86Specular\u3002\u975e\u91d1\u5c5e\u7684F0\u73b0\u5728\u662f\u4e00\u4e2a\u5e38\u65700.04\u3002\uff08<strong>\u8bd1\u8005\u6ce8<\/strong>\uff1a\u5f15\u64ce\u4e2d\u4f9d\u7136\u4f7f\u7528\u955c\u9762\u53cd\u5c04\u53c2\u6570\uff0c\u955c\u9762\u53cd\u5c04\u53c2\u6570\u8f93\u5165\u8303\u56f4[0,1]\uff0c\u9ed8\u8ba4\u4e3a0.5\uff0cF0\u7684\u503c\u4e3a\u955c\u9762\u53cd\u5c04\u53c2\u6570*0.08\u3002\u540e\u9762\u5173\u4e8e\u4e3a\u4ec0\u4e48\u6ca1\u6709\u53d6\u6d88\uff0c\u4e5f\u6709\u4ecb\u7ecd\u3002\uff09<\/p>\n\n\n\n<p>\u4ee5\u4e0b\u662f\u8fea\u65af\u5c3c\u6a21\u578b\u4e2d\u7684\u53c2\u6570\uff0c\u6211\u4eec\u9009\u62e9\u4e0d\u5728\u6211\u4eec\u7684\u57fa\u7840Material Model\u4e2d\u91c7\u7528\uff0c\u800c\u662f\u4f5c\u4e3a\u7279\u6b8a\u60c5\u51b5\u5904\u7406\u3002\uff08<strong>\u8bd1\u8005\u6ce8<\/strong>\uff1a\u4e0b\u9762\u7b80\u5355\u4ecb\u7ecd\u4e86\u4e00\u4e0b\u4e0d\u91c7\u7528\u7684\u539f\u56e0\uff0c\u6709\u4e00\u4e9b\u662f\u5f00\u9500\uff0c\u6709\u4e00\u4e2a\u5e72\u8106\u662f\u4e0d\u77e5\u9053Disney\u7684\u54e5\u4eec\u662f\u548b\u505a\u7684\u3002\u5475\u5475\u3002\u3002\u3002\u5916\u56fd\u4eba\u4e5f\u633a\u5b9e\u5728\u3002\uff09<\/p>\n\n\n\n<ul><li>\u6b21\u8868\u9762Subsurface\u3000\u3000 \u9634\u5f71\u8d34\u56fe\u7684\u91c7\u6837\u4e0d\u540c<\/li><li>\u5404\u5411\u5f02\u6027Anisotropy\u3000\u3000\u9700\u8981\u66f4\u591a\u7684IBL\u91c7\u6837<\/li><li>\u6e05\u6f06ClearCoat\u3000\u3000\u3000\u3000 \u9700\u8981\u53cc\u500d\u7684IBL\u91c7\u6837<\/li><li>\u8f89\u5149Sheen\u3000\u3000\u3000\u3000\u3000 \u5728Burley\u7684\u7b14\u8bb0\u4e2d\u6ca1\u6709\u5f88\u597d\u7684\u5b9a\u4e49<\/li><\/ul>\n\n\n\n<p>\u9664\u4e86Subsurface\u4e4b\u5916\uff0c\u6211\u4eec\u6ca1\u6709\u5728\u751f\u4ea7\u4e2d\u4f7f\u7528\u8fc7\u8fd9\u4e9b\u7279\u6b8a\u60c5\u51b5\u4e0b\u7684\u6a21\u578b\uff0c\u800cSubsurface\u5728\u6211\u4eec\u7684<em>Elemental<\/em>\u6f14\u793a\u4e2d\u88ab\u7528\u4e8e\u5236\u4f5c\u66f4\u597d\u6548\u679c\u7684\u51b0\u3002\u6b64\u5916\uff0c\u6211\u4eec\u8fd8\u6709\u4e00\u4e2a\u4e13\u95e8\u9488\u5bf9\u76ae\u80a4\u7684\u7740\u8272\u6a21\u578b\u3002\u5728\u672a\u6765\uff0c\u6211\u4eec\u6b63\u5728\u8003\u8651\u91c7\u7528\u4e00\u79cd\u6df7\u5408Deferred\/Forwarding\u7740\u8272\u65b9\u6cd5\uff0c\u4ee5\u66f4\u597d\u5730\u652f\u6301\u66f4\u591a\u7684\u7279\u6b8a\u7740\u8272\u6a21\u578b\u3002\u76ee\u524d\uff0c\u6211\u4eec\u91c7\u7528\u7684\u662f\u7eaf\u7cb9\u7684\u5ef6\u8fdf\u7740\u8272\u65b9\u6cd5\uff0c\u4e0d\u540c\u7684\u7740\u8272\u6a21\u578b\u662f\u901a\u8fc7\u5b58\u50a8\u5728G-Buffer\u4e2d\u7684\u7740\u8272\u6a21\u578bID\u7684\u52a8\u6001\u5206\u652f\u6765\u5904\u7406\u7684\u3002\uff08<strong>\u8bd1\u8005\u6ce8\uff1a<\/strong>\u4eceUE\u73b0\u5728\u7684\u4ee3\u7801\u4e2d\u770b\uff0c\u5b83\u652f\u6301\u5e03\u6599-Cloth\u3001\u5934\u53d1-Hair\u3001\u773c\u775b-Eye\u3001\u53cc\u9762\u6811\u53f6-Two sided Foliage\u3001\u9884\u79ef\u5206\u76ae\u80a4\u6548\u679c-Pre-Integrated Skin\u3001\u6b21\u8868\u9762\u5206\u5e03\u56fe-SubSurface Profile\u6548\u679c\u7b49\u3002\u5f53\u7136\uff0c\u4ece\u6750\u8d28\u6a21\u578b\u548c\u63d0\u4f9b\u5404\u79cd\u4e0d\u540c\u7684\u6548\u679c\u5b9e\u73b0\uff0c\u8fd9\u8fd8\u4e0d\u662f\u4e00\u4e2a\u6982\u5ff5\uff0c\u4f46\u662f\uff0c\u5229\u7528UE\u9009\u62e9\u7684\u6750\u8d28\u6a21\u578b\uff0c\u81f3\u5c11\u80fd\u6bd4\u8f83\u597d\u5730\u652f\u6491\u5f88\u591a\u6548\u679c\u7684\u5b9e\u73b0\u3002\uff09<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">2.3.1 Experiences \u4f53\u9a8c<\/h3>\n\n\n\n<p>\u6709\u4e00\u79cd\u60c5\u51b5\uff0c\u6211\u73b0\u5728\u5df2\u7ecf\u7ecf\u5386\u4e86\u597d\u51e0\u6b21\u4e86\u3002\u6211\u4f1a\u544a\u8bc9\u521a\u5f00\u59cb\u8fc7\u6e21\u5230\u4f7f\u7528\u4e0d\u540c\u7684<em>Roughness<\/em>\u7684\u827a\u672f\u5bb6\uff0c&#8221;\u50cf\u4ee5\u524d\u4f7f\u7528SpecularColor\u4e00\u6837\u4f7f\u7528<em>Roughness<\/em>\u201d\uff0c\u4e0d\u4e45\u540e\u6211\u5c31\u4f1a\u542c\u5230\u5174\u594b\u5730\u60ca\u8bb6\u5730\u8bf4\u9053\uff1a&#8221;\u8fd9\u4e0b\u597d\u7528\u4e86\uff01&#8221; \u4f46\u540e\u9762\u6709\u4e00\u4e2a\u6709\u8da3\u7684\u8bc4\u8bba\u662f\uff1a&#8221;<em>Roughness<\/em>\u7684\u611f\u89c9\u662f\u53cd\u7684\u3002&#8221; \u4e8b\u5b9e\u8bc1\u660e\uff0c\u827a\u672f\u5bb6\u4eec\u5e0c\u671b\u770b\u5230\u4ed6\u4eec\u6240\u521b\u4f5c\u7684\u8d34\u56fe\u662f\u6309\u7167\u4e0b\u9762\u7684\u89c4\u5f8b\u6765\u5c55\u73b0\u7684-\u66f4\u4eae\u7684\u7eb9\u7d20\u7b49\u4e8e\u66f4\u4eae\u7684\u955c\u9762\u9ad8\u5149\u3002\u5982\u679c\u56fe\u50cf\u5b58\u50a8<em>Roughness<\/em>\uff0c\u90a3\u4e48\u660e\u4eae\u76f8\u5f53\u4e8e\u66f4\u9ad8\u7684<em>Roughness<\/em>\uff0c\u800c\u8fd9\u5c06\u5bfc\u81f4\u4e0d\u90a3\u4e48\u5f3a\u70c8\u7684Specular\u6548\u679c\u3002\uff08<strong>\u8bd1\u8005\u6ce8<\/strong>\uff1a\u540e\u9762\u8fd9\u534a\u6bb5\u662f\u5728\u89e3\u91caArtist\u4e3a\u4ec0\u4e48\u89c9\u5f97\u662f\u53cd\u7684\u3002\uff09<\/p>\n\n\n\n<p>\u6211\u8fd8\u6536\u5230\u8fc7\u65e0\u6570\u6b21\u7684\u95ee\u9898\u662f\uff1a\u201dMetallic\u662f\u4e8c\u5143\u7684\u5417\uff1f\uff08<strong>\u8bd1\u8005\u6ce8<\/strong>\uff1a\u8868\u793a\u975e0\u53731\uff09\u201d\u5bf9\u4e8e\u8fd9\u4e2a\u95ee\u9898\uff0c\u6211\u6700\u521d\u4f1a\u89e3\u91ca\u6df7\u5408\u6750\u6599\u6216\u5206\u5c42\u6750\u6599\u7684\u5fae\u5999\u4e4b\u5904\u3002\u540e\u6765\u6211\u4e86\u89e3\u5230\uff0c\u6700\u597d\u662f\u76f4\u63a5\u8bf4 &#8220;\u662f\u7684\uff01&#8221; \u539f\u56e0\u662f\u4e00\u5f00\u59cb\u7684\u827a\u672f\u5bb6\u4eec\u4e0d\u613f\u610f\u628a\u53c2\u6570\u8bbe\u7f6e\u6210\u7edd\u5bf9\u503c\uff1b\u6211\u53d1\u73b0\u91d1\u5c5e\u7684Metallic\u503c\u4e3a0.8\u7684\u60c5\u51b5\u5f88\u5e38\u89c1\u3002\u63a5\u4e0b\u6765\u8ba8\u8bba\u7684Material Layers\uff0c\u5e94\u8be5\u662f\u63cf\u8ff099%\u7684\u60c5\u51b5\u4e0bMetallic\u4e0d\u662f0\u5c31\u662f1\u7684\u65b9\u5f0f\u3002<\/p>\n\n\n\n<p>\u5728\u8fc7\u6e21\u8fc7\u7a0b\u4e2d\uff0c\u6211\u4eec\u4e5f\u9047\u5230\u4e86\u4e00\u4e9b\u95ee\u9898\uff0c\u8fd9\u4e9b\u6750\u8d28\u5c06\u4e0d\u80fd\u518d\u88ab\u590d\u5236\u3002\u5176\u4e2d\u6700\u91cd\u8981\u7684\u4e00\u7ec4\u95ee\u9898\u6765\u81ea\u4e8e\u76ee\u524dEpic\u516c\u53f8\u6b63\u5728\u5236\u4f5c\u7684\u6e38\u620f\u300aFortnite-\u5821\u5792\u4e4b\u591c\u300b\u3002\u300aFortnite\u300b\u91c7\u7528\u4e86\u975e\u771f\u5b9e\u611f\u6e32\u67d3\u7684\u827a\u672f\u65b9\u5411\uff0c\u5e76\u7279\u610f\u4f7f\u7528\u4e86\u4e92\u8865\u8272\u7684\u6f2b\u53cd\u5c04\u548c\u955c\u9762\u53cd\u5c04\uff0c\u8fd9\u5728\u7269\u7406\u4e0a\u662f\u4e0d\u53ef\u884c\u7684\uff0c\u4e5f\u662f\u6211\u4eec\u7684\u65b0Material\u6a21\u578b\u4e2d\u6545\u610f\u4e0d\u80fd\u91cd\u73b0\u7684\u3002\u7ecf\u8fc7\u957f\u65f6\u95f4\u7684\u8ba8\u8bba\u540e\uff0c\u6211\u4eec\u51b3\u5b9a\u7ee7\u7eed\u652f\u6301\u65e7\u7684DiffuseColor\/SpecularColor\u4f5c\u4e3a\u5f15\u64ce\u5207\u6362\uff0c\u4ee5\u4fdd\u6301Fortnite\u7684\u8d28\u91cf\uff0c\u56e0\u4e3a\u5f53\u65f6Fortnite\u5df2\u7ecf\u8fdb\u5165\u5f00\u53d1\u9636\u6bb5\u3002\u4f46\u662f\uff0c\u6211\u4eec\u4e0d\u8ba4\u4e3a\u65b0\u7684\u6a21\u578b\u4f1a\u50cf\u8fea\u58eb\u5c3c\u5728\u300aWreck-It Ralph\u300b\u4e2d\u4f7f\u7528\u7684\u90a3\u6837\uff0c\u6392\u9664\u4e86\u975e\u771f\u5b9e\u611f\u7684\u6e32\u67d3\u6a21\u578b\uff0c\u6211\u4eec\u6253\u7b97\u5728\u672a\u6765\u7684\u9879\u76ee\u4e2d\u7ee7\u7eed\u652f\u6301\u4f7f\u7528\u975e\u771f\u5b9e\u611f\u7684\u6e32\u67d3\u6a21\u578b\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">2.3.2 \u6750\u8d28\u5206\u5c42-Material Layers<\/h3>\n\n\n\n<p>\u4e0e\u6211\u4eec\u4e4b\u524d\u7684\u65b9\u6cd5\u76f8\u6bd4\uff0c\u5c06\u6765\u81ea\u4e8e\u5171\u4eab\u5e93\u7684Material Layers\u8fdb\u884c\u6df7\u5408\u63d0\u4f9b\u4e86\u8bb8\u591a\u597d\u5904\uff0c\u4e4b\u524d\u7684\u65b9\u6cd5\u662f\u5355\u72ec\u6307\u5b9a\u6750\u8d28\u7684\u53c2\u6570\uff0c\u800c\u5728\u65b0\u7684\u65b9\u6cd5\u4e2d\uff0c\u8fd9\u4e9b\u53c2\u6570\u7684\u503c\u6765\u81ea\u4e8e\u4e3a\u6bcf\u4e2a\u7279\u5b9a\u6a21\u578b\u5236\u4f5c\u7684\u7eb9\u7406\u3002<\/p>\n\n\n\n<p>&#8211; \u5728\u591a\u4e2aAssets\u4e2d\u590d\u7528\u4ee5\u524d\u7684\u5de5\u4f5c\uff1b<\/p>\n\n\n\n<p>&#8211; \u51cf\u5c11\u4e86\u5355\u4e00Asset\u7684\u590d\u6742\u6027\uff1b<\/p>\n\n\n\n<p>&#8211; \u7edf\u4e00\u548c\u96c6\u4e2d\u4e86\u6e38\u620f\u5916\u89c2\u6240\u4f7f\u7528\u7684\u6750\u8d28\uff0c\u4f7f\u7f8e\u672f\u548c\u6280\u672f\u65b9\u5411\u66f4\u5bb9\u6613\u3002<\/p>\n\n\n\n<p>\u4e3a\u4e86\u5b8c\u5168\u63a5\u53d7\u8fd9\u79cd\u65b0\u7684\u5de5\u4f5c\u6d41\u7a0b\uff0c\u6211\u4eec\u9700\u8981\u91cd\u65b0\u601d\u8003\u6211\u4eec\u7684\u5de5\u5177\u3002\u865a\u5e7b\u5f15\u64ce\u5728UE3\u7684\u65e9\u671f\u5c31\u6709\u4e00\u4e2a\u57fa\u4e8e\u8282\u70b9\u56fe\u7684\u6750\u8d28\u7f16\u8f91\u5668\u3002\u8fd9\u4e2a\u8282\u70b9\u56fe\u6307\u5b9a\u4e86\u8f93\u5165\uff08\u7eb9\u7406\u3001\u5e38\u91cf\uff09\u3001\u64cd\u4f5c\u548c\u8f93\u51fa\uff0c\u5e76\u5c06\u5176\u7f16\u8bd1\u6210\u7740\u8272\u5668\u4ee3\u7801\u3002<\/p>\n\n\n\n<p>\u5c3d\u7ba1\u6750\u8d28\u5206\u5c42\u662f\u8fd9\u9879\u5de5\u4f5c\u7684\u4e3b\u8981\u76ee\u6807\uff0c\u4f46\u51fa\u4e4e\u610f\u6599\u7684\u662f\uff0c\u5728\u5de5\u5177\u7aef\u51e0\u4e4e\u4e0d\u9700\u8981\u6dfb\u52a0\u4ec0\u4e48\u4e1c\u897f\u6765\u652f\u6301\u6750\u8d28\u5c42\u7684\u521b\u5efa\u548c\u6df7\u5408\u3002UE4\u7684\u6750\u8d28\u7f16\u8f91\u5668\u4e2d\u7684\u8282\u70b9\u56fe\u7684\u90e8\u5206\u5df2\u7ecf\u53ef\u4ee5\u88ab\u5206\u7ec4\u5230\u51fd\u6570\u4e2d\uff0c\u5e76\u4ece\u591a\u4e2a\u6750\u8d28\u4e2d\u4f7f\u7528\u3002\u8fd9\u4e2a\u529f\u80fd\u5bf9\u4e8e\u5b9e\u73b0\u6750\u8d28\u56fe\u5c42\u6765\u8bf4\u662f\u5f88\u81ea\u7136\u7684\u3002\u5c06\u6750\u8d28\u5c42\u4fdd\u7559\u5728\u6211\u4eec\u57fa\u4e8e\u8282\u70b9\u7684\u7f16\u8f91\u5668\u4e2d\uff0c\u800c\u4e0d\u662f\u4f5c\u4e3a\u4e00\u4e2a\u56fa\u5b9a\u7684\u51fd\u6570\u7cfb\u7edf\u653e\u5728\u4e0a\u9762\uff0c\u8fd9\u4f7f\u5f97\u56fe\u5c42\u53ef\u4ee5\u4ee5\u53ef\u7f16\u7a0b\u7684\u65b9\u5f0f\u8fdb\u884c\u6620\u5c04\u548c\u7ec4\u5408\u3002<\/p>\n\n\n\n<p>\u4e3a\u4e86\u7b80\u5316\u5de5\u4f5c\u6d41\u7a0b\uff0c\u6211\u4eec\u6dfb\u52a0\u4e86\u4e00\u4e2a\u65b0\u7684\u6570\u636e\u7c7b\u578b\uff0c\u5373\u6750\u8d28\u5c5e\u6027\uff0c\u5b83\u4fdd\u5b58\u4e86\u6240\u6709\u7684\u6750\u8d28\u8f93\u51fa\u6570\u636e\u3002\u8fd9\u4e2a\u65b0\u7684\u7c7b\u578b\u548c\u6211\u4eec\u7684\u5176\u4ed6\u7c7b\u578b\u4e00\u6837\uff0c\u53ef\u4ee5\u4f5c\u4e3a\u5355\u5f15\u811a\u4f20\u5165\u548c\u4f20\u51fa\u6750\u6599\u51fd\u6570\uff0c\u4e5f\u53ef\u4ee5\u6cbf\u7ebf\u4f20\u9012\uff0c\u76f4\u63a5\u8f93\u51fa\u3002\u6709\u4e86\u8fd9\u4e9b\u53d8\u5316\uff0c\u6750\u8d28\u56fe\u5c42\u53ef\u4ee5\u50cf\u4ee5\u524d\u7684\u7eb9\u7406\u4e00\u6837\uff0c\u62d6\u5165\u3001\u7ec4\u5408\u3001\u64cd\u4f5c\u548c\u8f93\u51fa\u6750\u8d28\u56fe\u5c42\uff0c\u5c31\u50cf\u4ee5\u524d\u7684\u7eb9\u7406\u4e00\u6837\u3002\u4e8b\u5b9e\u4e0a\uff0c\u7531\u4e8e\u91c7\u7528\u4e86\u56fe\u5c42\uff0c\u5927\u591a\u6570\u7684\u6750\u8d28\u56fe\u5f80\u5f80\u4f1a\u66f4\u7b80\u5355\uff0c\u56e0\u4e3a\u91c7\u7528\u56fe\u5c42\u662f\u5b9a\u5236\u7ed9\u7279\u5b9a\u6750\u8d28\u7684\u4e3b\u8981\u4e1c\u897f\uff0c\u6240\u4ee5\u56fe\u5c42\u662f\u5982\u4f55\u6620\u5c04\u548c\u6df7\u5408\u7684\u3002\u8fd9\u6bd4\u4ee5\u524d\u7684\u53c2\u6570\u7279\u5b9a\u64cd\u4f5c\u8981\u7b80\u5355\u5f97\u591a\u3002<\/p>\n\n\n\n<p>\u7531\u4e8e\u6709\u4e00\u4e2a\u5c0f\u7684\u7ebf\u6027\u6750\u8d28\u53c2\u6570\u96c6\uff0c\u5b9e\u9645\u4e0a\u5b8c\u5168\u5728\u7740\u8272\u5668\u4e2d\u6df7\u5408\u56fe\u5c42\u662f\u975e\u5e38\u5b9e\u7528\u7684\u3002\u6211\u4eec\u89c9\u5f97\u8fd9\u6bd4\u7eaf\u7cb9\u7684\u79bb\u7ebf\u5408\u6210\u7cfb\u7edf\u7684\u8d28\u91cf\u6709\u4e86\u5f88\u5927\u7684\u63d0\u9ad8\u3002\u7531\u4e8e\u80fd\u591f\u5728\u4e0d\u540c\u9891\u7387\u4e0b\u6620\u5c04\u6570\u636e\uff0c\u7eb9\u7406\u6570\u636e\u7684\u8868\u89c2\u5206\u8fa8\u7387\u53ef\u4ee5\u975e\u5e38\u9ad8\uff1a\u6bcf\u4e2a\u9876\u70b9\u6216\u4f4e\u9891\u7eb9\u7406\u6570\u636e\u53ef\u4ee5\u662f\u552f\u4e00\u7684\uff0c\u56fe\u5c42\u6df7\u5408\u8499\u7248\u3001\u6cd5\u7ebf\u8d34\u56fe\u548cCavity\u8d34\u56fe\u5728\u6bcf\u4e2a\u7f51\u683c\u4e2d\u6307\u5b9a\uff0c\u6750\u6599\u5c42\u5728\u7f51\u683c\u8868\u9762\u4e0a\u5206\u5c42\u3002\u66f4\u9ad8\u7ea7\u7684\u60c5\u51b5\u4e0b\uff0c\u53ef\u80fd\u4f1a\u4f7f\u7528\u66f4\u591a\u7684\u9891\u7387\u3002\u867d\u7136\u7531\u4e8e\u7740\u8272\u5668\u7684\u6210\u672c\u95ee\u9898\uff0c\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528\u7684\u56fe\u5c42\u6570\u91cf\u5b9e\u9645\u4e0a\u662f\u6709\u9650\u7684\uff0c\u4f46\u662f\uff0c\u6211\u4eec\u7684\u827a\u672f\u5bb6\u8fd8\u6ca1\u6709\u53d1\u73b0\u5f88\u591a\u88ab\u9650\u5236\u7684\u60c5\u51b5\u3002 \uff08<strong>\u8bd1\u8005\u6ce8<\/strong>\uff1a\u8fd9\u91cc\u4f7f\u7528\u4e86\u5f88\u591a\u9891\u7387\uff0c\u5728\u539f\u6587\u4e2d\u662fFrequency\uff0c\u7ffb\u8bd1\u662f\u6ca1\u95ee\u9898\uff0c\u4f46\u662f\uff0c\u6211\u4e0d\u662f\u592a\u7406\u89e3\u8fd9\u4e2a\u5177\u4f53\u6307\u7684\u4ec0\u4e48\u542b\u4e49\u3002\u54ea\u4f4d\u5927\u795e\u6709\u66f4\u597d\u7684\u7406\u89e3\uff0c\u53ef\u4ee5\u8bc4\u8bba\u5206\u4eab\u4e0b\u3002\uff09<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"http:\/\/blog.coolcoding.cn\/wp-content\/uploads\/2021\/01\/v2-37d5dc09ec1eae7deb7757833c3f5e56_720w.jpg\" alt=\"\"\/><figcaption>\u56fe6\uff1a\u5728UE4\u6750\u8d28\u7f16\u8f91\u5668\u4e2d\u7684\u7b80\u5355\u6750\u8d28\u5206\u5c42<\/figcaption><\/figure>\n\n\n\n<p>\u4e00\u4e2a\u503c\u5f97\u5173\u6ce8\u7684\u5730\u65b9\u662f\uff0c\u6848\u4f8b\u4e2d\u7684\u827a\u672f\u5bb6\u901a\u8fc7\u5c06\u4e00\u4e2a\u7f51\u683c\u5206\u5272\u6210\u591a\u4e2a\u90e8\u5206\u6765\u7ed5\u8fc7\u4e86in-shader\u5206\u5c42\u7684\u9650\u5236\uff0c\u5bfc\u81f4\u4e86\u66f4\u591a\u7684Draw Call\u3002\u867d\u7136\u6211\u4eec\u671f\u671b\u5728UE4\u4e2d\uff0c\u7531\u4e8eCPU\u7aef\u4ee3\u7801\u4f18\u5316\uff0c\u6211\u4eec\u4f1a\u6709\u66f4\u5c11\u7684Draw Call\u6b21\u6570\uff0c\u4f46\u8fd9\u4f3c\u4e4e\u662f\u672a\u6765\u53ef\u80fd\u4f1a\u6210\u4e3a\u95ee\u9898\u7684\u6839\u6e90\u3002\u6211\u4eec\u8fd8\u6ca1\u6709\u7814\u7a76\u7684\u4e00\u4e2a\u9886\u57df\u662f\u4f7f\u7528\u52a8\u6001\u5206\u652f\u6765\u964d\u4f4e\u56fe\u5c42100%\u8986\u76d6\u7684\u533a\u57df\u7684\u7740\u8272\u5668\u6210\u672c\u3002<\/p>\n\n\n\n<p>\u5230\u76ee\u524d\u4e3a\u6b62\uff0c\u6211\u4eec\u5728Material Layers\u65b9\u9762\u7684\u4f53\u9a8c\u662f\u975e\u5e38\u6b63\u9762\u7684\u3002\u6211\u4eec\u5df2\u7ecf\u770b\u5230\uff0c\u65e2\u5f97\u5230\u4e86\u6548\u7387\u7684\u63d0\u9ad8\uff0c\u4e5f\u770b\u5230\u4e86\u8d28\u91cf\u7684\u5927\u5e45\u63d0\u5347\u3002\u6211\u4eec\u5e0c\u671b\u901a\u8fc7\u6539\u8fdbMaterial Layer\u5e93\u7684UI\u754c\u9762\uff0c\u4f7f\u827a\u672f\u5bb6\u4eec\u66f4\u5bb9\u6613\u627e\u5230\u548c\u9884\u89c8\u56fe\u5c42\u3002\u9664\u4e86\u76ee\u524d\u7684\u8fd0\u884c\u65f6\u7cfb\u7edf\u5916\uff0c\u6211\u4eec\u8fd8\u6253\u7b97\u7814\u7a76\u4e00\u4e2a\u79bb\u7ebf\u5408\u6210\/\u70d8\u70e4\u7cfb\u7edf\uff0c\u4ee5\u652f\u6301\u66f4\u591a\u7684\u56fe\u5c42\u5e76\u63d0\u4f9b\u66f4\u597d\u7684\u53ef\u6269\u5c55\u6027\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"http:\/\/blog.coolcoding.cn\/wp-content\/uploads\/2021\/01\/v2-e487aeb4879f7522f98c01c91ca7d7de_720w.jpg\" alt=\"\"\/><figcaption>\u56fe7\uff1a\u8bb8\u591a\u6750\u8d28\u5c42\u8fdb\u884c\u4e92\u6362\uff0c\u5e76\u4e0e\u94c1\u9508\u6765\u8fdb\u884c\u6df7\u5408<\/figcaption><\/figure>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"http:\/\/blog.coolcoding.cn\/wp-content\/uploads\/2021\/01\/v2-6b44fc827515ab0a26b1f12d35ecb163_720w.jpg\" alt=\"\"\/><figcaption>\u56fe8\uff1a\u5229\u7528\u591a\u9891\u7387\u7684\u7ec6\u8282\u5904\u7406\u4ea7\u751f\u7684Material Layer\u7684\u7ed3\u679c<\/figcaption><\/figure>\n\n\n\n<blockquote class=\"wp-block-quote\"><p>\u8bd1\u8005\u6ce8\uff1a\u5728UE4\u4e2d\uff0c\u63d0\u4f9b\u4e86\u4e24\u4e2a\u6bd4\u8f83\u5bb9\u6613\u6df7\u6dc6\u7684\u6982\u5ff5\uff0c\u5206\u522b\u662f\u201dLayered Material-\u5206\u5c42\u6750\u8d28\u201c\u548c\u201dMaterial Layers-\u6750\u8d28\u56fe\u5c42\u201c\u3002<br>\u5206\u5c42\u6750\u8d28\uff1a\u53ef\u4ee5\u5c06\u5206\u5c42\u6750\u8d28\u60f3\u50cf\u6210\u201c\u6750\u8d28\u5185\u7684\u6750\u8d28\u201d\u3002\u5b83\u4eec\u63d0\u4f9b\u4e86\u4e00\u79cd\u65b9\u6cd5\u6765\u521b\u5efa\u5355\u4e2a\u5177\u6709\u4e00\u7cfb\u5217\u5b50\u6750\u8d28\uff08\u5373&nbsp;<em>\u5c42<\/em>\uff09\u7684\u6750\u8d28\uff0c\u8fd9\u4e9b\u5b50\u6750\u8d28\u53ef\u4ee5\u4f7f\u7528\u6309\u50cf\u7d20\u7684\u64cd\u4f5c\uff08\u4f8b\u5982\u8499\u7248\uff09\u653e\u5728\u5bf9\u8c61\u8868\u9762\u4e0a\u3002\u5b83\u4eec\u9002\u5408\u4e8e\u5904\u7406\u72ec\u7279\u8868\u9762\u7c7b\u578b\u4e4b\u95f4\u7684\u590d\u6742\u6df7\u5408\u3002\u5728\u4e0a\u9762\u7684\u706b\u7bad\u56fe\u4e2d\uff0c\u6700\u53f3\u8fb9\u7684\u706b\u7bad\u4f7f\u7528\u4e86\u5355\u72ec\u7684\u6750\u8d28\u5c42\uff0c\u5305\u62ec\u94ec\u5408\u91d1\u3001\u94dd\u548c\u94dc\uff0c\u5e76\u4e14\u6309\u50cf\u7d20\u5728\u5404\u6750\u8d28\u4e4b\u95f4\u8fdb\u884c\u6df7\u5408\u3002\u6b64\u6548\u679c\u53ef\u901a\u8fc7\u5206\u5c42\u6750\u8d28\u8f7b\u677e\u5b9e\u73b0\u3002<br>\u6750\u8d28\u56fe\u5c42\uff1a\u6750\u8d28\u56fe\u5c42\u4f7f\u60a8\u80fd\u591f\u4f7f\u7528\u65b0\u7684\u6750\u8d28\u56fe\u5c42\u548c\u6750\u8d28\u56fe\u5c42\u6df7\u5408\u8d44\u6e90\u6765&nbsp;<strong>\u5c06\u60a8\u7684\u6750\u8d28\u7ec4\u5408\u5728\u5806\u6808\u4e2d<\/strong>\u3002\u8fd9\u4f7f\u60a8\u80fd\u591f\u65e0\u9700\u624b\u52a8\u6784\u5efa\u8282\u70b9\u90e8\u5206\u5373\u53ef\u6784\u5efa\u6b63\u786e\u7684\u6750\u8d28\u56fe\u8868\u3002\u8be5\u529f\u80fd\u7c7b\u4f3c\u4e8eMaterial\u51fd\u6570\uff0c\u4f46\u652f\u6301\u521b\u5efa\u5b50\u5b9e\u4f8b\u3002<\/p><\/blockquote>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"http:\/\/blog.coolcoding.cn\/wp-content\/uploads\/2021\/01\/v2-c226a124858c17266d5f67bd0d163a5e_720w.jpg\" alt=\"\"\/><figcaption>\u5206\u5c42\u6750\u8d28\u7684\u793a\u4f8b<\/figcaption><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">2.4\u3001\u5149\u7167\u6a21\u578b-Lighting Model<\/h2>\n\n\n\n<p>\u6b63\u5982\u7740\u8272\u4e00\u6837\uff0c\u6211\u4eec\u5e0c\u671b\u5149\u7167\u6a21\u578b\u4e5f\u80fd\u66f4\u504f\u5411\u7269\u7406\u6765\u63d0\u9ad8\u6211\u4eec\u7684\u5c55\u73b0\u6548\u679c\u3002\u6211\u4eec\u6295\u5165\u7814\u7a76\u7684\u4e24\u4e2a\u9886\u57df\u662f\u5149\u7167\u8870\u51cf\u548c\u975e\u7cbe\u786e\u53d1\u5c04\u6e90\uff08non-punctual sources of emission\uff09\u2014\u2014\u901a\u5e38\u88ab\u79f0\u4e4b\u4e3a\u533a\u57df\u5149\u6e90\uff08Area Lights\uff09\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">2.4.1\u3001\u5149\u7167\u8870\u51cf<\/h3>\n\n\n\n<p>\u63d0\u5347\u5149\u7167\u8870\u51cf\u7684\u8d28\u91cf\u662f\u76f8\u5f53\u76f4\u63a5\u7684\uff1a\u6211\u4eec\u91c7\u7eb3\u4e86\u7269\u7406\u7cbe\u786e\u7684\u53cd\u5e73\u65b9\u8870\u51cf\u5e76\u5207\u6362\u5230\u5149\u5ea6\u5b66\u7684\u5149\u901a\u91cf\u7684\u4eae\u5ea6\u5355\u4f4d\u3002\u5728\u6539\u53d8\u8fd9\u4e2a\u8870\u51cf\u6a21\u578b\u540e\uff0c\u6211\u4eec\u9700\u8981\u89e3\u51b3\u4e00\u4e2a\u5c0f\u95ee\u9898\uff1a\u8fd9\u79cd\u8870\u51cf\u51fd\u6570\u6ca1\u6709\u529e\u6cd5\u76f4\u63a5\u5904\u7406\u65e0\u7a77\u8fdc\u5904\u5149\u7684\u80fd\u91cf\u624d\u80fd\u8870\u51cf\u52300\u7684\u95ee\u9898\u3002\u51fa\u4e8e\u6548\u7387\u7684\u8003\u91cf\u2014\u2014\u65e0\u8bba\u662f\u5b9e\u65f6\u8ba1\u7b97\u8fd8\u662f\u79bb\u7ebf\u8ba1\u7b97\u2014\u2014\u6211\u4eec\u4f9d\u7136\u9700\u8981\u4eba\u5de5\u9650\u5236\u706f\u5149\u7684\u5f71\u54cd\u3002\u6709\u8bb8\u591a\u7684\u65b9\u5f0f\u53ef\u4ee5\u5b9e\u73b0[4]\uff0c\u4f46\u662f\u6211\u4eec\u9009\u62e9\u5bf9\u591a\u6570\u7684\u706f\u5149\u5f71\u54cd\u4fdd\u6301\u76f8\u5bf9\u4e0d\u53d7\u5f71\u54cd\u7684\u65b9\u5f0f\u53bb\u4fee\u6539\u53cd\u5e73\u65b9\u51fd\u6570\uff0c\u540c\u65f6\u63d0\u4f9b\u4e00\u4e2a\u9010\u6e10\u8fc7\u6e21\u52300\u7684\u65b9\u6848\u3002\u4e00\u4e2a\u6bd4\u8f83\u597d\u7684\u6027\u8d28\u662f\u901a\u8fc7\u4fee\u6539\u706f\u5149\u7684\u534a\u5f84\u5e76\u4e0d\u4f1a\u6539\u53d8\u5b83\u7684\u6709\u6548\u4eae\u5ea6\u3002\u5f53\u5149\u7167\u88ab\u827a\u672f\u6027\u7684\u9501\u5b9a\u65f6\uff0c\u8fd9\u4e2a\u5c5e\u6027\u662f\u975e\u5e38\u91cd\u8981\u7684\uff0c\u4f46\u662f\u56e0\u4e3a\u6027\u80fd\u7684\u539f\u56e0\u706f\u5149\u8303\u56f4\u4f9d\u7136\u9700\u8981\u8c03\u6574\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"http:\/\/blog.coolcoding.cn\/wp-content\/uploads\/2021\/01\/v2-729f9b272b803bfe2a38fc8168811afa_720w.png\" alt=\"\"\/><\/figure>\n\n\n\n<p>\u5206\u6bcd\u4e2d\u76841\u662f\u4e3a\u4e86\u9632\u6b62\u51fd\u6570\u5728\u9760\u8fd1\u5149\u6e90\u7684\u8ddd\u79bb\u4e0a\u4ea7\u751f\u63a5\u8fd1\u65e0\u7a77\u5927\u7684\u503c\uff0c\u5b83\u53ef\u4ee5\u4f5c\u4e3a\u67d0\u4e9b\u4e0d\u9700\u8981\u8868\u73b0\u7269\u7406\u51c6\u786e\u6027\u7684\u60c5\u51b5\u4e0b\uff0c\u8ba9\u827a\u672f\u5bb6\u53ef\u4ee5\u8fdb\u884c\u8c03\u6574\u7684\u53c2\u6570\u3002<\/p>\n\n\n\n<p>\u8fd9\u79cd\u7b80\u5355\u7684\u6539\u53d8\u6240\u5e26\u6765\u7684\u8d28\u91cf\u5dee\u5f02\uff0c\u7279\u522b\u662f\u5728\u6709\u5f88\u591a\u5c40\u90e8\u5149\u6e90\u7684\u573a\u666f\u4e2d\u662f\u5f88\u91cd\u8981\u7684\uff0c\u5b83\u5f88\u53ef\u80fd\u662f\u6027\u80fd\u548c\u6548\u679c\u6298\u4e2d\u7684\u6700\u540e\u624b\u6bb5\u3002\uff08<strong>\u8bd1\u8005\u6ce8<\/strong>\uff1a\u539f\u6587\u8fd9\u53e5\u8bdd\u975e\u5e38\u96be\u7406\u89e3\uff0c\u6211\u4f7f\u7528\u610f\u8bd1\u7684\u65b9\u5f0f\u3002\u610f\u601d\u662f\u8bf4\uff0c\u5728\u6709\u5f88\u591aLocal Light\u7684\u65f6\u5019\uff0c\u53ef\u4ee5\u901a\u8fc7\u8fd9\u4e2a\u5206\u6bcd\u7684\u8c03\u6574\uff0c\u6765\u8c03\u6574\u5149\u6240\u5f71\u54cd\u7684\u8303\u56f4\uff0c\u4ece\u800c\u63d0\u5347\u8fd0\u7b97\u6548\u7387\u3002\uff09<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"http:\/\/blog.coolcoding.cn\/wp-content\/uploads\/2021\/01\/v2-b47ac3ad8bef76b18f99b8d89e44a677_720w.jpg\" alt=\"\"\/><figcaption>\u56fe9\uff1a\u53cd\u5e73\u65b9\u8870\u51cf\u7684\u65b9\u6848\u5e26\u6765\u4e86\u66f4\u81ea\u7136\u7684\u6e32\u67d3\u6548\u679c<\/figcaption><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\">2.4.2\u3001\u533a\u57df\u5149<\/h3>\n\n\n\n<p>\u533a\u57df\u5149\u6e90\u4e0d\u53ea\u662f\u4ea7\u751f\u66f4\u903c\u771f\u7684\u56fe\u50cf\u3002\u5728\u4f7f\u7528\u57fa\u4e8e\u7269\u7406\u6750\u6599\u65f6\uff0c\u5b83\u4eec\u4e5f\u76f8\u5f53\u91cd\u8981\u3002\u6211\u4eec\u53d1\u73b0\uff0c\u5982\u679c\u6ca1\u6709\u5b83\u4eec\uff0c\u827a\u672f\u5bb6\u4eec\u5f80\u5f80\u5728\u76f4\u89c9\u4e0a\u4f1a\u907f\u514d\u753b\u51fa\u975e\u5e38\u4f4e\u7684\u7c97\u7cd9\u5ea6\u503c\uff0c\u56e0\u4e3a\u8fd9\u5bfc\u81f4\u4e86\u65e0\u9650\u5c0f\u7684\u955c\u9762\u9ad8\u5149\uff0c\u770b\u8d77\u6765\u5f88\u4e0d\u81ea\u7136\u3002\u4ece\u672c\u8d28\u4e0a\u8bf4\uff0c\u4ed6\u4eec\u8bd5\u56fe\u91cd\u73b0\u6765\u81ea\u51c6\u70b9\u5149\u6e90\u7684\u533a\u57df\u7167\u660e\u6548\u679c\u3002<\/p>\n\n\n\n<p>\u4e0d\u5e78\u7684\u662f\uff0c\u8fd9\u79cd\u53cd\u5e94\u5bfc\u81f4\u4e86\u9634\u5f71\u548c\u7167\u660e\u4e4b\u95f4\u7684\u8026\u5408\uff0c\u6253\u7834\u4e86\u57fa\u4e8e\u7269\u7406\u6e32\u67d3\u7684\u6838\u5fc3\u539f\u5219\u4e4b\u4e00\uff1a\u5f53\u6750\u8d28\u5728\u4e0d\u540c\u7684\u5149\u7167\u73af\u5883\u4e2d\u4f7f\u7528\u65f6\uff0c\u4e0d\u9700\u8981\u5bf9\u6750\u8d28\u8fdb\u884c\u4fee\u6539\uff0c\u800c\u8fd9\u4e9b\u6750\u8d28\u7684\u5149\u7167\u73af\u5883\u4e0e\u521b\u5efa\u65f6\u7684\u73af\u5883\u4e0d\u540c\u3002<\/p>\n\n\n\n<p>\u533a\u57df\u706f\u662f\u4e00\u4e2a\u6d3b\u8dc3\u7684\u7814\u7a76\u9886\u57df\u3002\u5728\u79bb\u7ebf\u6e32\u67d3\u4e2d\uff0c\u5e38\u89c1\u7684\u89e3\u51b3\u65b9\u6848\u662f\u4ece\u5149\u6e90\u8868\u9762\u7684\u8bb8\u591a\u70b9\u8fdb\u884c\u5149\u7167-\u4f7f\u7528\u5747\u5300\u91c7\u6837\u6216\u91cd\u8981\u6027\u91c7\u6837[12][20]\u3002\u8fd9\u5bf9\u4e8e\u5b9e\u65f6\u6e32\u67d3\u6765\u8bf4\u5b8c\u5168\u4e0d\u5207\u5b9e\u9645\u3002\u5728\u8ba8\u8bba\u53ef\u80fd\u7684\u89e3\u51b3\u65b9\u6848\u4e4b\u524d\uff0c\u6211\u4eec\u7684\u8981\u6c42\u662f\u8fd9\u6837\u7684\u3002<\/p>\n\n\n\n<p>&#8211; \u4e00\u81f4\u7684\u6750\u8d28\u5916\u89c2\uff1a\u7528\u4e8e\u6f2b\u53cd\u5c04BRDF\u548c\u955c\u9762\u53cd\u5c04BRDF\u8bc4\u4f30\u7684\u80fd\u91cf\u4e0d\u80fd\u662f\u663e\u8457\u4e0d\u540c\u3002<\/p>\n\n\n\n<p>&#8211; \u5f53\u5b9e\u5fc3\u89d2\u63a5\u8fd1\u96f6\u65f6\uff0c\u63a5\u8fd1\u70b9\u5149\u6a21\u578b\uff1a\u6211\u4eec\u4e0d\u60f3\u8ba9\u6211\u4eec\u7684\u7740\u8272\u6a21\u578b\u5931\u53bb\u4efb\u4f55\u4e00\u4e2a\u65b9\u9762\u6765\u5b9e\u73b0\u8fd9\u4e2a\u76ee\u6807\u3002<\/p>\n\n\n\n<p>&#8211; \u8db3\u591f\u5feb\uff0c\u53ef\u4ee5\u5728\u4efb\u4f55\u5730\u65b9\u4f7f\u7528\uff1a\u5426\u5219\uff0c\u6211\u4eec\u65e0\u6cd5\u89e3\u51b3\u4e0a\u8ff0\u7684 &#8220;\u504f\u5deeroughness &#8220;\u95ee\u9898\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">2.4.2.1 Billboard\u53cd\u5c04<\/h3>\n\n\n\n<p>Billboard\u53cd\u5c04[13]\u662f\u4e00\u79cd\u53ef\u7528\u4e8e\u79bb\u6563\u5149\u6e90\u7684IBL\u5f62\u5f0f\u3002\u5c06\u5b58\u50a8\u53d1\u5c04\u5149\u7684\u4e8c\u7ef4\u56fe\u50cf\u6620\u5c04\u5230\u4e09\u7ef4\u7a7a\u95f4\u4e2d\u7684\u4e00\u4e2a\u77e9\u5f62\u56fe\u50cf\u4e0a\u3002\u7c7b\u4f3c\u4e8e\u73af\u5883\u8d34\u56fe\u9884\u6ee4\u6ce2\uff0c\u5bf9\u56fe\u50cf\u8fdb\u884c\u4e0d\u540c\u5927\u5c0f\u7684\u955c\u9762\u5206\u5e03\u9525\u4f53\u8fdb\u884c\u9884\u6ee4\u6ce2\u3002\u4ece\u8fd9\u4e2a\u56fe\u50cf\u4e2d\u8ba1\u7b97\u955c\u9762\u9634\u5f71\u53ef\u4ee5\u88ab\u8ba4\u4e3a\u662f\u4e00\u79cd\u5706\u9525\u8ffd\u8e2a\u7684\u5f62\u5f0f\uff0c\u5176\u4e2d\u4e00\u4e2a\u5706\u9525\u8fd1\u4f3c\u4e8e\u955c\u9762NDF\u3002\u5728\u5706\u9525\u4e2d\u5fc3\u7684\u5c04\u7ebf\u4e0eBillboard\u7684\u5e73\u9762\u76f8\u4ea4\u3002\u7136\u540e\u5c06\u56fe\u50cf\u7a7a\u95f4\u4e2d\u7684\u76f8\u4ea4\u70b9\u4f5c\u4e3a\u7eb9\u7406\u5750\u6807\uff0c\u5e76\u4ee5\u76f8\u4ea4\u5904\u7684\u5706\u9525\u534a\u5f84\u4f5c\u4e3a\u7eb9\u7406\u5750\u6807\uff0c\u63a8\u5bfc\u51fa\u4e00\u4e2a\u9002\u5f53\u7684\u9884\u6ee4\u6ce2mipmap\u7ea7\u522b\u3002\u4f46\u662f\uff0c\u53ef\u60b2\u7684\u662f\uff0c\u867d\u7136\u56fe\u50cf\u53ef\u4ee5\u76f4\u63a5\u8868\u8fbe\u975e\u5e38\u590d\u6742\u7684\u533a\u57df\u5149\u6e90\uff0c\u4f46Billboard\u53cd\u5c04\u7531\u4e8e\u4ee5\u4e0b\u539f\u56e0\u672a\u80fd\u6ee1\u8db3\u6211\u4eec\u7684\u7b2c\u4e8c\u4e2a\u8981\u6c42\u3002<\/p>\n\n\n\n<p>&#8211; \u56fe\u50cf\u662f\u5728\u4e00\u4e2a\u5e73\u9762\u4e0a\u8fdb\u884c\u9884\u8fc7\u6ee4\u7684\uff0c\u6240\u4ee5\u5728\u56fe\u50cf\u7a7a\u95f4\u4e2d\u53ef\u4ee5\u8868\u793a\u7684\u5b9e\u4f53\u89d2\u662f\u6709\u9650\u7684\u3002<\/p>\n\n\n\n<p>&#8211; \u5f53\u5149\u7ebf\u4e0d\u4e0e\u5e73\u9762\u76f8\u4ea4\u65f6\uff0c\u5c31\u65e0\u6cd5\u83b7\u5f97Lighting\u7684\u6570\u636e\u3002<\/p>\n\n\n\n<p>&#8211; \u5149\u5411\u91cfl\u662f\u672a\u77e5\u7684\uff0c\u6216\u8005\u5047\u8bbe\u4e3a\u53cd\u5c04\u5411\u91cf\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"http:\/\/blog.coolcoding.cn\/wp-content\/uploads\/2021\/01\/v2-b6b513028ec21e83f46acc668abc8473_720w.jpg\" alt=\"\"\/><figcaption>[13]\u8fd9\u4e2aPPT\u4e2d\u5173\u4e8eBillboard Reflection\u7684\u4ecb\u7ecd<\/figcaption><\/figure>\n\n\n\n<blockquote class=\"wp-block-quote\"><p>\u8bd1\u8005\u6ce8\uff1a\u8fd9\u4e2aBillboard\u53cd\u5c04\u662fUE3\u4e2d\u63d0\u4f9b\u7684\u4e00\u4e2afeature\uff0c\u4ece[13]\u4e2d\u53ef\u4ee5\u770b\u51fa\u6765\u3002\u4f5c\u8005\u5728\u8fd9\u91cc\u62ff\u51fa\u6765\u5c06\uff0c\u53ea\u662f\u8bf4\uff0c\u5bf9\u4e8e\u533a\u57df\u5149\u8fd9\u4e2a\u9886\u57df\u7684\u6700\u65b0\u7814\u7a76\u548c\u5b9e\u8df5\u8fdb\u5c55\uff0c\u4ee5\u53ca\u662f\u5426\u4f5c\u4e3a\u4e00\u4e2a\u6bd4\u8f83\u91cd\u8981\u7684\u53c2\u8003\u5b9e\u73b0\u3002<\/p><\/blockquote>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>2.4.2.2\u3001\u690e\u4f53\u76f8\u4ea4-Cone Intersection<\/strong><\/h3>\n\n\n\n<p>\u9525\u4f53\u8ffd\u8e2a\u4e0d\u9700\u8981\u9884\u5148\u8fc7\u6ee4\uff0c\u53ef\u4ee5\u901a\u8fc7\u5206\u6790\u6765\u5b8c\u6210\u3002\u6211\u4eec\u5b9e\u9a8c\u8fc7\u7684\u4e00\u4e2a\u7248\u672c\u662f\u7528Oat\u7684\u5706\u9525\u4e0e\u7403\u4f53\u76f8\u4ea4\u65b9\u7a0b[15]\u6765\u8ffd\u8e2a\u5706\u9525\uff0c\u4f46\u6210\u672c\u592a\u9ad8\uff0c\u4e0d\u5b9e\u7528\u3002\u6700\u8fd1\u7531Drobot[7]\u63d0\u51fa\u7684\u53e6\u4e00\u79cd\u65b9\u6cd5\u662f\u5c06\u5706\u9525\u4e0e\u9762\u5411\u9634\u5f71\u70b9\u7684\u5706\u76d8\u76f8\u4ea4\u3002\u7136\u540e\u5728\u76f8\u4ea4\u533a\u57df\u4e0a\u8fdb\u884c\u591a\u9879\u5f0f\u8fd1\u4f3cNDF\u7684\u591a\u9879\u5f0f\u79ef\u5206\u3002<\/p>\n\n\n\n<p>\u968f\u7740Drobot\u6700\u8fd1\u7684\u8fdb\u6b65\uff0c\u8fd9\u4f3c\u4e4e\u662f\u4e00\u4e2a\u6709\u8da3\u7684\u7814\u7a76\u9886\u57df\uff0c\u4f46\u5c31\u76ee\u524d\u7684\u5f62\u5f0f\u6765\u770b\uff0c\u5b83\u5e76\u4e0d\u80fd\u6ee1\u8db3\u6211\u4eec\u7684\u8981\u6c42\u3002\u7531\u4e8e\u4f7f\u7528\u5706\u9525\u4f53\uff0c\u955c\u9762\u5206\u5e03\u5fc5\u987b\u662f\u5f84\u5411\u5bf9\u79f0\u7684\u3002\u8fd9\u6392\u9664\u4e86\u62c9\u4f38\u9ad8\u5149\uff0c\u8fd9\u662f\u5fae\u8868\u9762Specular\u6a21\u578b\u7684\u4e00\u4e2a\u975e\u5e38\u91cd\u8981\u7684\u7279\u5f81\u3002\u6b64\u5916\uff0c\u5c31\u50cf\u5e7f\u544a\u724c\u53cd\u5c04\u4e00\u6837\uff0c\u4e5f\u6ca1\u6709\u529e\u6cd5\u5b9a\u4e49\u51fa\u4e00\u4e2a\u5149\u7684\u65b9\u5411\u5411\u91cf\uff0c\u800c\u8fd9\u4e2a\u6070\u6070\u662fShading\u6a21\u578b\u6240\u5fc5\u987b\u7684\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"http:\/\/blog.coolcoding.cn\/wp-content\/uploads\/2021\/01\/v2-110fcc62f9c77a619c9b598cb023299b_720w.jpg\" alt=\"\"\/><figcaption>[7]\u4e2d\u7684\u4e00\u4e2a\u6848\u4f8b\uff0c\u53ef\u4ee5\u770b\u51fa\u662f\u4f7f\u7528Cone\u6765\u6a21\u62df\u4e00\u4e2a\u77e9\u5f62\u5149\u6e90<\/figcaption><\/figure>\n\n\n\n<blockquote class=\"wp-block-quote\"><p>\u8bd1\u8005\u6ce8\uff1a[7]\u662fGuerrilla Games\u516c\u53f8\u8fdb\u884c\u7684\u300aLighting Killzone : Shadow Fall\u300b\u6f14\u8bb2\u3002\u8fd9\u4e2a\u4e3b\u8981\u662f\u5728Guerrilla Games\u516c\u53f8\u5bf9\u57fa\u4e8e\u7269\u7406\u7684Lighting\u548cArea Lighting\u7684\u62a5\u544a\u5185\u5bb9\u3002\u5728\u8fd9\u4e2aPPT\u4e2d\uff0c\u9488\u5bf9Area Light\uff0c\u4ed6\u4eec\u90fd\u662f\u91c7\u7528Cone Interaction\u7684\u65b9\u5f0f\u6765\u5904\u7406\u7684\u3002\u663e\u7136\uff0c\u4ece\u672c\u6587\u7684\u89d2\u5ea6\u4e0a\u770b\uff0c\u5e76\u4e0d\u8ba4\u4e3a\u4f7f\u7528Cone\u6765\u6a21\u62dfArea Light\u662f\u4e00\u4e2a\u9002\u5e94\u5e7f\u6cdb\u7684\u65b9\u5f0f\u3002\u867d\u7136\uff0c\u4ece\u6548\u679c\u6765\u770b\uff0c\u4e5f\u4e0d\u662f\u4e0d\u80fd\u63a5\u53d7\u3002\u4e0b\u9762\u7ed9\u4e00\u5f20\u4ed6\u4eec\u516c\u53f8\u4ea7\u54c1\u300aKillZone\u300b\u7684\u622a\u56fe\u3002<br>Guerrilla Games\u662f\u4e00\u5bb6\u96b6\u5c5e\u4e8eSony Interactive Entertainment LLC\u7684\u8377\u5170\u7b2c\u4e00\u65b9\u6e38\u620f\u5f00\u53d1\u5546\uff0c\u66fe\u4e3a\u7d22\u5c3c\u7535\u8111\u5a31\u4e50\u5f00\u53d1<a href=\"https:\/\/link.zhihu.com\/?target=https%3A\/\/baike.baidu.com\/item\/%25E6%259D%2580%25E6%2588%25AE%25E5%259C%25B0%25E5%25B8%25A6\/8813674\" target=\"_blank\" rel=\"noreferrer noopener\">\u6740\u622e\u5730\u5e26<\/a>\u4ee5\u53ca\u4e3aEidos Interactive\u5f00\u53d1\u8d8a\u53571967\u3002<\/p><\/blockquote>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"http:\/\/blog.coolcoding.cn\/wp-content\/uploads\/2021\/01\/v2-0dd6ad277e367fced035434d16be17ba_720w.jpg\" alt=\"\"\/><figcaption>\u300aKillZone-\u6740\u622e\u5730\u5e26\u300b\u7684\u622a\u56fe<\/figcaption><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>2.4.2.3\u3001\u955c\u9762\u53cd\u5c04D\u4fee\u6539-Specular D Modification<\/strong><\/h3>\n\n\n\n<p>\u6211\u4eec\u53bb\u5e74\u63d0\u51fa\u7684\u4e00\u79cd\u65b9\u6cd5[14]\u662f\u6839\u636e\u5149\u6e90\u7684\u5b9e\u5fc3\u89d2\u6765\u4fee\u6539\u955c\u9762\u5206\u5e03\u3002\u8fd9\u80cc\u540e\u7684\u7406\u8bba\u662f\u8ba4\u4e3a\u5149\u6e90\u7684\u5206\u5e03\u4e0e\u76f8\u5e94\u7684\u5706\u9525\u89d2D(h)\u76f8\u540c\u3002\u5c06\u4e00\u4e2a\u5206\u5e03\u4e0e\u53e6\u4e00\u4e2a\u5206\u5e03\u8fdb\u884c\u5377\u79ef\u8fd0\u7b97\uff0c\u53ef\u4ee5\u901a\u8fc7\u5c06\u4e24\u4e2a\u5706\u9525\u89d2\u76f8\u52a0\u5f97\u5230\u4e00\u4e2a\u65b0\u7684\u5706\u9525\u3002\u4e3a\u6b64\uff0c\u5c06\u65b9\u7a0b3\u4e2d\u7684\u03b1\u6362\u7b97\u6210\u6709\u6548\u9525\u89d2\uff0c\u52a0\u4e0a\u5149\u6e90\u7684\u89d2\u5ea6\uff0c\u518d\u6362\u7b97\u56de\u6765\u3002\u73b0\u5728\u7528\u8fd9\u4e2a\u03b1\u2032\u6765\u4ee3\u66ff\u03b1\u3002\u6211\u4eec\u7528\u4e0b\u9762\u7684\u8fd1\u4f3c\u503c\u6765\u5b9e\u73b0\u8fd9\u4e2a\u76ee\u7684\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"http:\/\/blog.coolcoding.cn\/wp-content\/uploads\/2021\/01\/v2-9671503fbda7fd6ca5ac363ef1db500b_720w.png\" alt=\"\"\/><\/figure>\n\n\n\n<p>\u867d\u7136\u6548\u7387\u5f88\u9ad8\uff0c\u4f46\u9057\u61be\u7684\u662f\uff0c\u8fd9\u79cd\u6280\u672f\u5e76\u4e0d\u80fd\u6ee1\u8db3\u6211\u4eec\u7684\u7b2c\u4e00\u4e2a\u8981\u6c42\uff0c\u56e0\u4e3a\u5f53\u7528\u5927\u9762\u79ef\u7684\u706f\u5149\u7167\u5c04\u65f6\uff0c\u975e\u5e38\u6709\u5149\u6cfd\u7684\u6750\u6599\u4f1a\u663e\u5f97\u5f88\u7c97\u7cd9\u3002\u8fd9\u542c\u8d77\u6765\u53ef\u80fd\u5f88\u660e\u663e\uff0c\u4f46\u5f53\u955c\u9762NDF\u662f\u7d27\u51d1\u7684\uff0c\u4f8b\u5982Blinn-Phong\uff0c\u8fd9\u79cd\u6280\u672f\u7684\u6548\u679c\u8981\u597d\u5f97\u591a\uff0c\u4ece\u800c\u66f4\u597d\u5730\u5339\u914d\u5149\u6e90\u7684\u5206\u5e03\u3002\u5bf9\u4e8e\u6211\u4eec\u6240\u9009\u62e9\u7684Shading\u6a21\u578b\uff08\u57fa\u4e8eGGX\uff09\uff0c\u8fd9\u5e76\u4e0d\u53ef\u884c\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"http:\/\/blog.coolcoding.cn\/wp-content\/uploads\/2021\/01\/v2-e3fee652308f701bb05fccd8c520b8e2_720w.jpg\" alt=\"\"\/><\/figure>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"http:\/\/blog.coolcoding.cn\/wp-content\/uploads\/2021\/01\/v2-3455e374b903834cb9543ed89513cd8a_720w.jpg\" alt=\"\"\/><\/figure>\n\n\n\n<blockquote class=\"wp-block-quote\"><p><strong>\u8bd1\u8005\u6ce8<\/strong>\uff1a\u4e0a\u9762\u4e24\u9875PPT\u662f\u6587\u4e2d\u63d0\u53ca\u5230\u7684[14]\u4e2d\u7684\u5185\u5bb9\u3002\u4ece\u7b2c\u4e8c\u5f20PPT\u4e2d\uff0c\u53ef\u4ee5\u770b\u5230\u56db\u5f20\u5bf9\u6bd4\u56fe\u4e2d\u95f4\u7684\u5956\u676f\u8868\u73b0\u7684\u786e\u5b9e\u4e0d\u662f\u7279\u522b\u597d\u3002<\/p><\/blockquote>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"http:\/\/blog.coolcoding.cn\/wp-content\/uploads\/2021\/01\/v2-a0b0029f5cb40641db92ab81152491d0_720w.jpg\" alt=\"\"\/><figcaption>\u56fe10\uff1a\u5de6\u4fa7\u4e3a\u53c2\u8003\uff0c\u53f3\u4fa7\u4e3aSpecular D\u4fee\u6539\u4e0b\u7684\u6548\u679c\u3002\u7531\u4e8e\u5149\u6e90\u662f\u7403\u5f62\u7684\u9762\u79ef\u5149\uff0c\u5728gloosy\u6bd4\u8f83\u9ad8\u7684\u6750\u8d28\u4ee5\u53ca\u5728\u63a0\u5c04\u89d2\u5ea6\u4e0b\u663e\u793a\u7684\u6bd4\u8f83\u7c97\u7cd9\uff0c\u5982\u629b\u5149\u540e\u7684\u94dc\u5934\u6240\u793a\u3002<\/figcaption><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\">2.4.2.4\u3001\u4ee3\u8868\u70b9-Representative Point<\/h3>\n\n\n\n<p>\u5982\u679c\u5bf9\u4e8e\u4e00\u4e2a\u7279\u5b9a\u7684\u7740\u8272\u70b9\uff08Shading Point\uff09\uff0c\u6211\u4eec\u53ef\u4ee5\u628a\u6765\u81ea\u533a\u57df\u5149\u7684\u6240\u6709\u5149\u90fd\u770b\u4f5c\u662f\u6765\u81ea\u5149\u6e90\u8868\u9762\u4e0a\u7684\u4e00\u4e2a\u4ee3\u8868\u70b9\uff0c\u90a3\u4e48\u6211\u4eec\u7684\u7740\u8272\u6a21\u578b\u5c31\u53ef\u4ee5\u76f4\u63a5\u4f7f\u7528\u4e86\u3002\u4e00\u4e2a\u5408\u7406\u7684\u9009\u62e9\u662f\u8d21\u732e\u6700\u5927\u7684\u70b9\u3002\u5bf9\u4e8ePhong\u5206\u5e03\u6765\u8bf4\uff0c\u8fd9\u662f\u5149\u6e90\u4e0a\u4e0e\u53cd\u5c04\u5149\u7ebf\u5939\u89d2\u6700\u5c0f\u7684\u70b9\u3002<\/p>\n\n\n\n<p>\u8fd9\u79cd\u6280\u672f\u4e4b\u524d\u5df2\u7ecf\u53d1\u8868\u8fc7[16][22]\uff0c\u4f46\u80fd\u91cf\u5b88\u6052\u95ee\u9898\u4e00\u76f4\u6ca1\u6709\u5f97\u5230\u89e3\u51b3\u3002\u901a\u8fc7\u79fb\u52a8\u53d1\u5c04\u5149\u7684\u539f\u70b9\uff0c\u6211\u4eec\u6709\u6548\u5730\u589e\u52a0\u4e86\u5149\u7684\u5b9e\u4f53\u89d2\uff0c\u4f46\u6ca1\u6709\u8865\u507f\u989d\u5916\u7684\u80fd\u91cf\u3002\u7ea0\u6b63\u5b83\u6bd4\u9664\u4ee5\u5b9e\u5fc3\u89d2\u7565\u5fae\u590d\u6742\u4e00\u4e9b\uff0c\u56e0\u4e3a\u80fd\u91cf\u5dee\u5f02\u53d6\u51b3\u4e8e\u955c\u9762\u5206\u5e03\u3002\u4f8b\u5982\uff0c\u5bf9\u4e8e\u7c97\u7cd9\u7684\u6750\u8d28\uff0c\u6539\u53d8\u5165\u5c04\u5149\u7684\u65b9\u5411\u4f1a\u5bfc\u81f4\u80fd\u91cf\u7684\u53d8\u5316\u5f88\u5c0f\uff0c\u4f46\u5bf9\u4e8e\u6709\u5149\u6cfd\u7684\u6750\u8d28\uff0c\u80fd\u91cf\u7684\u53d8\u5316\u53ef\u80fd\u662f\u5de8\u5927\u7684\u3002<\/p>\n\n\n\n<blockquote class=\"wp-block-quote\"><p><strong>\u8bd1\u8005\u6ce8<\/strong>\uff1a[22]\u7684\u6458\u8981\uff1a\u5728\u5927\u591a\u6570\u7684\u6e32\u67d3\u7cfb\u7edf\u4e2d\uff0c\u533a\u57df\u5149\u6e90\u88ab\u5206\u89e3\u6210\u8bb8\u591a\u70b9\u5149\u6e90\uff0c\u8fd9\u9700\u8981\u7e41\u91cd\u7684\u8ba1\u7b97\u624d\u80fd\u5f97\u5230\u903c\u771f\u7684\u7ed3\u679c\u3002\u5728\u672c\u6587\u4e2d\uff0c\u6211\u4eec\u63d0\u51fa\u4e86\u4e00\u79cd\u65b0\u9896\u7684\u65b9\u6cd5\uff1a<strong>\u7528\u70b9\u5149\u6e90\u8fd1\u4f3c\u533a\u57df\u5149\u6e90\uff0c\u5bf9\u7740\u8272\u6a21\u578b\u7684\u6bcf\u4e2a\u5206\u91cf\u8fdb\u884c\u70b9\u5149\u6e90\u7684\u8fd1\u4f3c<\/strong>\u3002\u70b9\u5149\u6e90\u7684\u4f4d\u7f6e\u548c\u5f3a\u5ea6\u53d6\u51b3\u4e8e\u573a\u666f\u70b9\u7684\u4f4d\u7f6e\u548c\u65b9\u5411\u3002\u56e0\u6b64\uff0c\u573a\u666f\u7684\u6e32\u67d3\u662f\u5229\u7528\u5373\u65f6\u7684\u70b9\u5149\u6e90\u8fdb\u884c\u7740\u8272\u3002\u6211\u4eec\u5de5\u4f5c\u7684\u5173\u952e\u8d21\u732e\u5728\u4e8e\uff0c\u6211\u4eec\u80fd\u591f\u5b9e\u65f6\u5730\u7528\u4efb\u610f\u5f62\u72b6\u548c\u4efb\u610f\u5f3a\u5ea6\u5206\u5e03\u7684\u533a\u57df\u5149\u6e90\u8fdb\u884c\u906e\u5149\uff0c\u5e76\u4e14\u906e\u5149\u6a21\u578b\u53ef\u4ee5\u662f\u901a\u7528\u7684\u3002\u800c\u4e14\u8ba1\u7b97\u6210\u672c\u4e0e\u533a\u57df\u5149\u6e90\u7684\u590d\u6742\u5ea6\u65e0\u5173\u3002\u5b9e\u9a8c\u7ed3\u679c\u8868\u660e\uff0c\u6211\u4eec\u7684\u65b9\u6cd5\u6240\u4ea7\u751f\u7684\u7ed3\u679c\u4e0e\u5730\u9762\u771f\u76f8\u76f8\u5f53\u3002\u6211\u4eec\u7684\u65b9\u6cd5\u53ef\u4ee5\u6269\u5c55\u5230\u5176\u4ed6\u7c7b\u578b\u7684\u5c40\u90e8\u5149\u6e90\uff0c\u5982\u5f27\u5f62\u5149\u6e90\u548c\u4f53\u79ef\u5149\u6e90\u7b49\u3002<\/p><\/blockquote>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"http:\/\/blog.coolcoding.cn\/wp-content\/uploads\/2021\/01\/v2-01cb988d601343f884e26a52f5238cfc_720w.jpg\" alt=\"\"\/><figcaption>\u56fe\uff1a\u8ddfMental Ray\u8fdb\u884c\u5bf9\u6bd4\u3002\u8fd9\u91cc\u7684\u5149\u6e90\u662f\u4e00\u4e2aDisk\u5f62\u72b6\u7684\u3002<\/figcaption><\/figure>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"http:\/\/blog.coolcoding.cn\/wp-content\/uploads\/2021\/01\/v2-62cfe8bc86c0d69ed3b2cb46203aacca_720w.jpg\" alt=\"\"\/><figcaption>\u56fe\uff1a\u8ddf\u5149\u8ffd\u6a21\u578b\u8fdb\u884c\u5bf9\u6bd4\u3002\u8fd9\u91cc\u7684\u5149\u6e90\u662f\u4e00\u4e2achecker board\u6a21\u5f0f\u3002<\/figcaption><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\">2.4.2.5\u3001<strong>\u7403\u5f62\u5149-Sphere Lights<\/strong><\/h3>\n\n\n\n<p>\u5982\u679c\u7403\u5728\u5730\u5e73\u7ebf\u4e4b\u4e0a\uff0c\u7403\u5f62\u5149\u7684\u8f90\u7167\u5ea6\u7b49\u4e8e\u70b9\u5149[18]\u3002\u5c3d\u7ba1\u53cd\u76f4\u89c9\uff0c\u5982\u679c\u6211\u4eec\u63a5\u53d7\u8bef\u5dee\uff0c\u8fd9\u610f\u5473\u7740\u5f53\u7403\u843d\u5728\u5730\u5e73\u7ebf\u4e4b\u4e0b\u7684\u65f6\u5019\uff0c\u6211\u4eec\u4ec5\u4ec5\u9700\u8981\u5904\u7406\u955c\u9762\u53cd\u5c04\u5149\u7167\u3002\u6211\u4eec\u901a\u8fc7\u5bfb\u627e\u8ddd\u79bb\u5c04\u7ebf\u6700\u5c0f\u7684\u70b9\u8fd1\u4f3c\u53d1\u73b0\u4e0e\u53cd\u5c04\u5c04\u7ebf\u4e4b\u95f4\u6700\u5c0f\u7684\u89d2\u5ea6\u7684\u70b9\u3002\u5bf9\u4e8e\u4e00\u4e2a\u7403\u8fd9\u662f\u7b80\u5355\u660e\u4e86\u7684\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"http:\/\/blog.coolcoding.cn\/wp-content\/uploads\/2021\/01\/v2-d48b7d55501b09ac19b24cc4cff98b3c_720w.jpg\" alt=\"\"\/><\/figure>\n\n\n\n<p>\u8fd9\u91cc\uff0cL\u662f\u4ece\u7740\u8272\u70b9\u5230\u5149\u6e90\u4e2d\u5fc3\u7684\u5411\u91cf\uff0c\u5e76\u4e14sourceRadius\u662f\u706f\u5149\u7403\u4f53\u7684\u534a\u5f84\uff0cr\u662f\u53cd\u5c04\u5411\u91cf\u3002\u5728\u8fd9\u4e2a\u6848\u4f8b\u4e2d\uff0c\u5c04\u7ebf\u4e0e\u7403\u76f8\u4ea4\uff0c\u8ba1\u7b97\u70b9\u5c06\u4f1a\u662f\u5c04\u7ebf\u5230\u7403\u4f53\u4e2d\u5fc3\u7684\u6700\u8fd1\u70b9\u3002\u4e00\u65e6\u6807\u51c6\u5316\uff0c\u5b83\u5c31\u662f\u76f8\u540c\u7684\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"http:\/\/blog.coolcoding.cn\/wp-content\/uploads\/2021\/01\/v2-f8812c639a079ac9c402e683659bfa1d_720w.jpg\" alt=\"\"\/><figcaption>\u56fe\uff1a\u300aReal-Time Rendering 4\u300b\u4e2d\u7684\u4e00\u5f20\u56fe<\/figcaption><\/figure>\n\n\n\n<p>\u4ece\u8fd9\u5f20\u56fe\u4e2d\uff0c&nbsp;<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/www.zhihu.com\/equation?tex=P_%7Bcs%7D\" alt=\"[\u516c\u5f0f]\"\/><\/figure>\n\n\n\n<p>&nbsp;\u662f\u6700\u540e\u9009\u4e2d\u7684closet point\uff0c\u7136\u540e\uff0c\u5149\u7ebf\u7684\u65b9\u5411\u5c31\u662f\u4ece<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/www.zhihu.com\/equation?tex=P_%7Bcs%7D\" alt=\"[\u516c\u5f0f]\"\/><\/figure>\n\n\n\n<p>\u5230P\u3002<\/p>\n\n\n\n<p>\u901a\u8fc7\u79fb\u52a8\u53d1\u5c04\u5149\u7684\u539f\u70b9\u5230\u7403\u7684\u8868\u9762\uff0c\u6211\u4eec\u901a\u8fc7\u7403\u7684\u5bf9\u89d2\u9ad8\u6548\u7684\u62d3\u5bbd\u4e86\u955c\u9762\u53cd\u5c04\u5206\u5e03\u3002\u5c3d\u7ba1\u5b83\u4e0d\u662f\u4e00\u4e2a\u5fae\u8868\u9762\u7684\u5206\u5e03\uff0c\u8fd9\u53ef\u4ee5\u7528\u6807\u51c6\u5316\u7684Phong\u5206\u5e03\u6765\u89e3\u91ca\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"http:\/\/blog.coolcoding.cn\/wp-content\/uploads\/2021\/01\/v2-dc69d22e6cbbf149b6c332b722b28a71_720w.jpg\" alt=\"\"\/><\/figure>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/www.zhihu.com\/equation?tex=%CF%95_%7Br%7D\" alt=\"[\u516c\u5f0f]\"\/><\/figure>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/www.zhihu.com\/equation?tex=%CF%95_%7Bs%7D\" alt=\"[\u516c\u5f0f]\"\/><\/figure>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/www.zhihu.com\/equation?tex=l_%7Bpoint%7D\" alt=\"[\u516c\u5f0f]\"\/><\/figure>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/www.zhihu.com\/equation?tex=l_%7Bsphere%7D\" alt=\"[\u516c\u5f0f]\"\/><\/figure>\n\n\n\n<p>\u8fd9\u91cc&nbsp;&nbsp;\u662fr\u548cL\u4e4b\u95f4\u7684\u5939\u89d2\uff0c\u5e76\u4e14&nbsp;&nbsp;\u662f\u7403\u5bf9\u89d2\u7684\u534a\u89d2\uff0c&nbsp;&nbsp;\u662f\u6807\u51c6\u5316\u7684\uff0c\u610f\u5473\u7740\u79ef\u5206\u7684\u7ed3\u679c\u5728\u534a\u7403\u4e0a\u4e3a1\u3002&nbsp;&nbsp;\u663e\u7136\u4e0d\u518d\u6807\u51c6\u5316\u5e76\u53d6\u51b3\u4e8ep\u7684\u6307\u6570\uff0c\u79ef\u5206\u53ef\u4ee5\u5927\u7684\u591a\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"http:\/\/blog.coolcoding.cn\/wp-content\/uploads\/2021\/01\/v2-7da27dc411a73ce8b74e50fd90513b1c_720w.jpg\" alt=\"\"\/><figcaption>\u56fe11\uff1a\u7528\u7b49\u5f0f13\u89e3\u91ca\u7684\u62d3\u5bbd\u6548\u5e94\u7684\u53ef\u89c6\u5316<\/figcaption><\/figure>\n\n\n\n<p>\u4e3a\u4e86\u8fd1\u4f3c\u6a21\u62df\u80fd\u91cf\u4e0a\u7684\u589e\u957f\uff0c\u6211\u4eec\u62d3\u5bbd\u4e86\u5149\u7684\u5b9e\u5fc3\u89d2\u5206\u5e03\uff0c\u5e94\u7528\u4e4b\u524d\u63cf\u8ff0\u7684\u955c\u9762\u53cd\u5c04D\u4fee\u6539\u3002\u6211\u4eec\u4f7f\u7528\u6807\u51c6\u5316\u56e0\u5b50\u5b9e\u73b0\u66f4\u5e7f\u6cdb\u7684\u5206\u5e03\u5e76\u66ff\u6362\u521d\u59cb\u7684\u6807\u51c6\u5316\u56e0\u5b50\u3002\u5bf9\u4e8eGGX\uff0c\u6807\u51c6\u5316\u56e0\u5b50\u662f1\/\u03c0\u03b12\u3002\u4e3a\u4e86\u5bf9\u4ee3\u8868\u70b9\u64cd\u4f5c\u63a8\u5bfc\u4e00\u4e2a\u8fd1\u4f3c\u7684\u6807\u51c6\u5316\uff0c\u6211\u4eec\u5c06\u65b0\u7684\u62d3\u5bbd\u7684\u6807\u51c6\u5316\u56e0\u5b50\u9664\u4ee5\u521d\u59cb\u7684\u6807\u51c6\u5316\u56e0\u5b50\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"http:\/\/blog.coolcoding.cn\/wp-content\/uploads\/2021\/01\/v2-1bb03a91c7c6eb878650df2c14b83835_720w.png\" alt=\"\"\/><\/figure>\n\n\n\n<p>\u4ee3\u8868\u70b9\u65b9\u6cd5\u7684\u7ed3\u679c\u6ee1\u8db3\u6211\u4eec\u6240\u6709\u7684\u9700\u6c42\u3002\u901a\u8fc7\u6b63\u786e\u7684\u5904\u7406\u80fd\u91cf\u5b88\u6052\uff0c\u65e0\u8bba\u5149\u6e90\u5927\u5c0f\u5982\u4f55\uff0c\u6750\u8d28\u8868\u73b0\u4e00\u81f4\u3002\u5149\u6ed1\u6750\u8d28\u4f9d\u7136\u63d0\u4f9b\u4e86\u9510\u5229\u8fb9\u7f18\u7684\u955c\u9762\u53cd\u5c04\u9ad8\u5149\uff0c\u5e76\u4e14\u56e0\u4e3a\u5b83\u53ea\u662f\u4fee\u6539\u4e86BRDF\u7684\u8f93\u5165\uff0c\u6211\u4eec\u7684\u7740\u8272\u6a21\u578b\u4e0d\u4f1a\u53d7\u4efb\u4f55\u5f71\u54cd\u3002\u6700\u540e\uff0c\u5b83\u8db3\u591f\u9ad8\u6548\uff0c\u5141\u8bb8\u6211\u4eec\u7684\u827a\u672f\u5bb6\u5728\u4efb\u4f55\u5730\u65b9\u4f7f\u7528\u5b83\u3002<\/p>\n\n\n\n<p><strong>2.4.2.6\u3001\u706f\u7ba1-Tube 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alt=\"[\u516c\u5f0f]\"\/><\/figure>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/www.zhihu.com\/equation?tex=L_%7B1%7D\" alt=\"[\u516c\u5f0f]\"\/><\/figure>\n\n\n\n<p>\u8fd9\u91cc&nbsp;&nbsp;\u548c&nbsp;&nbsp;\u662f\u4ece\u7740\u8272\u70b9\u5230\u7ebf\u6bb5\u7ec8\u70b9\u7684\u5411\u91cf\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"http:\/\/blog.coolcoding.cn\/wp-content\/uploads\/2021\/01\/v2-142e6f63726ec6bce0652c36c6081e89_720w.jpg\" alt=\"\"\/><figcaption>\u56fe12\uff1a\u5de6\u8fb9\u4e3a\u53c2\u8003\uff0c\u53f3\u8fb9\u662f\u4ee3\u8868\u70b9\u65b9\u6cd5\u3002\u5c3d\u7ba1\u80fd\u91cf\u5b88\u6052\u4e0d\u5b8c\u7f8e\uff0c\u6211\u4eec\u7684\u8fd1\u4f3c\u503c\u4e0e\u53c2\u8003\u503c\u5339\u914d\u5f97\u4ee4\u4eba\u4fe1\u670d\u3002<\/figcaption><\/figure>\n\n\n\n<p>\u6211\u4eec\u4fee\u6539\u4e86\u8fd9\u4e2a\u65b9\u7a0b\u5f0f\u6765\u9632\u6b62\u8f90\u7167\u5ea6\u4e3a\u8d1f\u503c\uff0c\u9664\u4ee50\uff0c\u5e76\u4e14\u5f53\u957f\u5ea6\u4e3a0\u65f6\u5339\u914d\u6211\u4eec\u7684\u70b9\u5149\u8870\u51cf\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"http:\/\/blog.coolcoding.cn\/wp-content\/uploads\/2021\/01\/v2-97e878aba15ab309402d953f641de93e_720w.png\" alt=\"\"\/><\/figure>\n\n\n\n<p>\u5bf9\u4e8e\u7ebf\u6027\u5149\u955c\u9762\u53cd\u5c04\u6211\u4eec\u9700\u8981\u5728\u4e0b\u9762\u7684\u65b9\u7a0b\u7ec4\u91cc\u89e3\u51fat\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"http:\/\/blog.coolcoding.cn\/wp-content\/uploads\/2021\/01\/v2-b5b5fc8d4fca17fc24de276681f7b2ae_720w.png\" alt=\"\"\/><\/figure>\n\n\n\n<p>Picott[16]\u53d1\u73b0\u4e0er\u6700\u5c0f\u89d2\u7684t\u7684\u503c\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"http:\/\/blog.coolcoding.cn\/wp-content\/uploads\/2021\/01\/v2-fc3f0077faa89c29220e17ec81f64b7f_720w.png\" alt=\"\"\/><\/figure>\n\n\n\n<p>\u548c\u7403\u5f62\u5149\u7684\u6848\u4f8b\u76f8\u4f3c\uff0c\u6211\u4eec\u8fd1\u4f3c\u4e86\u6700\u5c0f\u89d2\u5e76\u4e14\u6c42\u89e3\uff0c\u800c\u4e0d\u91c7\u7528\u6700\u77ed\u8ddd\u79bb\u7684\u6c42\u89e3\u65b9\u6cd5\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"http:\/\/blog.coolcoding.cn\/wp-content\/uploads\/2021\/01\/v2-7843a6ecad44b14341bd03684510135f_720w.png\" alt=\"\"\/><\/figure>\n\n\n\n<p>\u8fd9\u4f1a\u9020\u6210\u8fb9\u754c\u6ca1\u6709\u6b63\u5e38\u5904\u7406\u7684\u60c5\u51b5\uff0c\u8fd9\u6837\u5c31\u4e0d\u80fd\u603b\u662f\u627e\u5230\u6700\u8fd1\u70b9\uff0c\u4f46\u662f\u8fd9\u6837\u8ba1\u7b97\u8d77\u6765\u6210\u672c\u7565\u4f4e\uff0c\u5e76\u4e14\u770b\u8d77\u6765\u63d0\u4f9b\u4e86\u65b9\u7a0b\u5f0f18\u4e00\u6837\u5408\u7406\u7684\u7ed3\u679c\u3002<\/p>\n\n\n\n<p>\u6ce8\u610f\uff0c\u8fd9\u662f\u56e0\u4e3a\u65b9\u7a0b\u5f0f18\u548c19\u90fd\u628ar\u89c6\u4f5c\u4e00\u6761\u7ebf\u6bb5\u800c\u4e0d\u662f\u5c04\u7ebf\u662f\u91cd\u8981\u7684\uff0c\u89e3\u51b3\u65b9\u6848\u90fd\u672a\u80fd\u6b63\u786e\u5904\u7406\u6307\u5411\u8fdc\u79bb\u7ebf\u6bb5\u7684\u5c04\u7ebf\u3002\u751a\u81f3\u5bf9\u4e8e\u5b8c\u7f8e\u7684\u5e73\u9762\uff0c\u8fd9\u4f1a\u9020\u6210\u4ece\u4e00\u4e2a\u7ed3\u675f\u70b9\u5230\u53e6\u4e00\u4e2a\u7ed3\u675f\u70b9\u7684\u751f\u786c\u53d8\u5316\u3002\u6211\u4eec\u901a\u8fc7\u5728\u8ba1\u7b97\u70b9\u548c\u6bcf\u4e00\u4e2a\u7ed3\u675f\u70b9\u4e4b\u95f4\u9009\u62e9\u6765\u89e3\u51b3\u8fd9\u4e2a\u95ee\u9898\uff0c\u4f46\u662f\u8fd9\u6837\u505a\u6210\u672c\u8f83\u9ad8\u3002\u6b64\u65f6\u6211\u4eec\u53ea\u597d\u63a5\u53d7\u4e86\u8fd9\u4e2a\u7455\u75b5\u3002<\/p>\n\n\n\n<p>\u4e3a\u4e86\u4f7f\u80fd\u91cf\u5b88\u6052\uff0c\u6211\u4eec\u5e94\u7528\u4e86\u7528\u4e8e\u7403\u5f62\u5149\u7684\u76f8\u540c\u6982\u5ff5\u3002\u955c\u9762\u53cd\u5c04\u5206\u5e03\u901a\u8fc7\u706f\u5149\u7684\u5bf9\u89d2\u5df2\u7ecf\u88ab\u62d3\u5bbd\uff0c\u4f46\u662f\u8fd9\u6b21\u53ea\u662f\u4e00\u7ef4\u7684\uff0c\u6240\u4ee5\u6211\u4eec\u4f7f\u7528GGX\u7684\u5404\u5411\u5f02\u6027\u7248\u672c[2]\u3002\u5404\u5411\u5f02\u6027GGX\u7684\u6807\u51c6\u5316\u56e0\u5b50\u662f1\/\u03c0\u03b1x\u03b1y\uff0c\u5728\u5404\u5411\u540c\u6027\u6848\u4f8b\u4e2d\uff0c\u8fd9\u91cc\u03b1x=\u03b1y=\u03b1\uff0c\u8fd9\u7ed9\u4e86\u6211\u4eec\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"http:\/\/blog.coolcoding.cn\/wp-content\/uploads\/2021\/01\/v2-d7a9f357908b7b28a1bc6c93fce844dc_720w.png\" alt=\"\"\/><\/figure>\n\n\n\n<p>\u56e0\u4e3a\u6211\u4eec\u53ea\u6539\u53d8\u4e86\u706f\u5149\u7684\u539f\u70b9\u5e76\u5e94\u7528\u4e86\u4e00\u4e2a\u80fd\u91cf\u5b88\u6052\u9879\uff0c\u8fd9\u4e9b\u64cd\u4f5c\u53ef\u4ee5\u88ab\u52a0\u901f\u3002\u7528\u7ebf\u6bb5\u548c\u7403\u6765\u505a\uff0c\u8fd1\u4f3c\u5f62\u72b6\u7684\u5377\u79ef\u5e76\u4e14\u5f88\u597d\u7684\u6a21\u62df\u4e86\u706f\u7ba1\u7684\u8868\u73b0\u3002\u706f\u7ba1\u7684\u7ed3\u679c\u5c55\u793a\u5728\u56fe13\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"http:\/\/blog.coolcoding.cn\/wp-content\/uploads\/2021\/01\/v2-41546cfa19d0d214d47370c8f8dc200a_720w.jpg\" alt=\"\"\/><figcaption>\u56fe13\uff1a\u4f7f\u7528\u80fd\u91cf\u5b88\u6052\u7684\u4ee3\u8868\u70b9\u65b9\u6cd5\u7684\u706f\u7ba1<\/figcaption><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>3\u3001\u7ed3\u8bba<\/strong><\/h2>\n\n\n\n<p>\u6211\u4eec\u5728\u7740\u8272\uff0c\u6750\u8d28\u548c\u706f\u5149\u9886\u57df\u8f6c\u5411\u57fa\u4e8e\u7269\u7406\u7684\u5b9e\u73b0\uff0c\u5df2\u7ecf\u88ab\u8bc1\u5b9e\u662f\u975e\u5e38\u6210\u529f\u7684\u3002\u5728\u6211\u4eec\u6700\u8fd1\u7684\u300a\u6e17\u900f\u8005\u300bdemo\u7684\u56fe\u5f62\u90e8\u5206\u8d21\u732e\u6781\u5927\uff0c\u5e76\u4e14\u6211\u4eec\u8ba1\u5212\u5728\u672a\u6765\u6240\u6709\u7684\u9879\u76ee\u4e2d\u4f7f\u7528\u8fd9\u4e9b\u5b9e\u73b0\u3002\u4e8b\u5b9e\u4e0a\uff0c\u8fd9\u4e9b\u6539\u53d8\u7684\u53ef\u884c\u90e8\u5206\u5df2\u7ecf\u96c6\u6210\u8fdb\u300a\u5821\u5792\u4e4b\u591c\u300b\uff0c\u5728\u8fd9\u9879\u5de5\u4f5c\u5f00\u59cb\u4e4b\u524d\u4fbf\u5df2\u7ecf\u8fdb\u5c55\u987a\u5229\u7684\u9879\u76ee\u3002\u6211\u4eec\u6253\u7b97\u5728\u8fd9\u4e9b\u9886\u57df\u4ee5\u5b9e\u73b0\u66f4\u9ad8\u7684\u7075\u6d3b\u6027\u7684\u76ee\u7684\u7ee7\u7eed\u63d0\u5347\uff0c\u5e76\u4e14\u63d0\u5347\u76ee\u6807\u662f\u5404\u79cd\u573a\u666f\u548c\u6240\u6709\u7ea7\u522b\u7684\u786c\u4ef6\u53ef\u4ee5\u4eab\u53d7\u57fa\u4e8e\u7269\u7406\u65b9\u6cd5\u7684\u597d\u5904\u7684\u53ef\u6269\u5c55\u6027\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">4\u3001\u9e23\u8c22<\/h2>\n\n\n\n<p>\u6211\u8981\u611f\u8c22Epic Games\uff0c\u7279\u522b\u662f\u6e32\u67d3\u56e2\u961f\u4e2d\u7684\u6bcf\u4e00\u4e2a\u4eba\u5728\u8fd9\u9879\u5de5\u4f5c\u548c\u827a\u672f\u5bb6\uff0c\u63d0\u4f9b\u4e86\u65b9\u5411\u3001 \u53cd\u9988\uff0c\u5e76\u6700\u7ec8\u505a\u51fa\u7f8e\u4e3d\u7684\u4e1c\u897f\u4e0e\u5b83\u7684\u827a\u672f\u5bb6\u4eec\u7684\u624b\u3002\u6211\u8981\u7279\u522b\u611f\u8c22\u015aebastien Lagarde\uff0c\u4ed6\u53d1\u73b0\u4e86\u6211\u7684\u91cd\u8981\u6027\u53d6\u6837\u6570\u5b66\u4e2d\u7684\u4e00\u4e2a\u9519\u8bef\uff0c\u5f53\u4fee\u590d\u540e\u5bfc\u81f4\u6211\u4eec\u7684\u73af\u5883BRDF\u89e3\u51b3\u65b9\u6848\u7684\u53d1\u5c55\u3002\u6c38\u8fdc\u4e0d\u8981\u4f4e\u4f30\u4e86\u5728\u5168\u7403\u8303\u56f4\u5185\u6709\u624d\u534e\u7684\u6388\u6743\u8005\u6765\u67e5\u770b\u4f60\u5199\u7684\u4ee3\u7801\u662f\u591a\u4e48\u6709\u4ef7\u503c\u3002\u6700\u540e\uff0c\u6211\u8981\u611f\u8c22Stephen Hill\u548cStephen McAuley\uff0c\u611f\u8c22\u4ed6\u4eec\u7684\u53cd\u9988\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator\"\/>\n\n\n\n<p>\u7ffb\u8bd1\u8fd9\u7bc7\u6587\u7ae0\uff0c\u82b1\u4e86\u4e0d\u5c11\u65f6\u95f4\uff0c\u4e5f\u6536\u83b7\u4e86\u5f88\u591a\u3002\u7b80\u5355\u5199\u4e00\u4e0b\u4e2a\u4eba\u611f\u53d7\uff1a<\/p>\n\n\n\n<p>1\u3001\u6574\u4e2a\u53d8\u5316\u867d\u7136\u662f\u4eceShading Model\u3001Material Model\u3001Lighting Model\u4e09\u4e2a\u65b9\u5411\u8fdb\u884c\u7684\uff0c\u4f46\u662f\uff0c\u6838\u5fc3\u601d\u60f3\u90fd\u662f2013\u5e74\u524d\u540e\uff0c\u6574\u4e2a\u5f15\u64ce\u884c\u4e1a\u5411\u771f\u5b9e\u7269\u7406\u9760\u8fd1\u7684\u8d8b\u52bf\u7684\u6307\u5f15\u4e0b\u5f00\u5c55\u7684\u3002\u5c24\u5176\u662f\u5728\u770b\u8fd9\u4e9b\u8bba\u6587\u7684\u65f6\u5019\uff0c\u80fd\u591f\u611f\u53d7\u5230\u5f53\u65f6\u6574\u4e2a\u884c\u4e1a\u7684\u53d8\u5316\u4e0e\u53d1\u5c55\u7684\u8feb\u5207\u6027\uff1b<\/p>\n\n\n\n<p>2\u3001\u4ece\u5f53\u65f6\u7684\u5206\u4eab\u548c\u8bba\u6587\u4e2d\uff0c\u5176\u5b9e\uff0c\u5e94\u8be5\u770b\u5230\u5404\u4e2a\u516c\u53f8\u9488\u5bf9\u5982\u4f55\u5411\u771f\u5b9e\u6e32\u67d3\u6539\u53d8\uff0c\u8fdb\u884c\u4e86\u975e\u5e38\u591a\u7684\u5c1d\u8bd5\u3002\u8bf4\u5b9e\u8bdd\uff0c\u4ece\u6700\u7ec8\u4f5c\u54c1\u7684\u89d2\u5ea6\u6765\u770b\uff0c\u5176\u5b9e\u90fd\u633a\u597d\u7684\u3002\u6700\u540eDisney\u7ed9\u4e86\u4e00\u6574\u5957\u53c2\u8003\u5b9e\u73b0\uff0c\u624d\u7b97\u662f\u5728\u884c\u4e1a\u5185\u8d77\u5230\u4e86\u4e00\u9524\u5b9a\u97f3\u7684\u6548\u679c\uff1b<\/p>\n\n\n\n<p>3\u3001\u4ece\u884c\u4e1a\u7684\u7814\u7a76\u70ed\u70b9\u6765\u770b\uff0c\u57fa\u672c\u4e0a\u8fd8\u662f\u56f4\u7ed5\u7740\u95f4\u63a5\u5149\u7167\u3001Area Light\u4ee5\u53ca\u9634\u5f71\u4ea7\u751f\u7b49\u65b9\u9762\uff0c\u5f53\u7136\uff0c\u4e13\u9879\u5730\u5bf9\u4e8e\u76ae\u80a4\u3001\u5934\u53d1\u7b49\u7b49\u7684\u7814\u7a76\u4e5f\u5f88\u591a\uff0c\u4f46\u662f\uff0c\u5bf9\u4e8e\u5f15\u64ce\u6765\u8bf4\uff0c\u53ef\u80fd\u8fd8\u662f\u4ece\u6700\u57fa\u672c\u7684\u89d2\u5ea6\u6765\u770b\u95ee\u9898\u3002<\/p>\n\n\n\n<p>4\u3001\u6e29\u6545\u53ef\u4ee5\u77e5\u65b0\uff0c\u8fd9\u5bf9\u4e8e\u770b\u672a\u6765\u7684\u53d1\u5c55\u540c\u6837\u5177\u6709\u975e\u5e38\u91cd\u8981\u7684\u4ef7\u503c\uff1b<\/p>\n\n\n\n<p><strong>\u53c2\u8003\u6587\u732e\uff1a<\/strong><\/p>\n\n\n\n<p>[1] AMD, CubeMapGen: Cubemap Filtering and Mipchain Generation Tool.&nbsp;<a href=\"https:\/\/link.zhihu.com\/?target=http%3A\/\/developer.amd\" target=\"_blank\" rel=\"noreferrer noopener\">http:\/\/developer.amd<\/a>. com\/resources\/archive\/archived-tools\/gpu-tools-archive\/cubemapgen\/<\/p>\n\n\n\n<p>[2] Burley, Brent, \u201cPhysically-Based Shading at Disney\u201d, part of \u201cPractical Physically Based Shading in Film and Game Production\u201d, SIGGRAPH 2012 Course Notes.&nbsp;<a href=\"https:\/\/link.zhihu.com\/?target=http%3A\/\/blog.selfshadow.com\/\" target=\"_blank\" rel=\"noreferrer noopener\">http:\/\/blog.selfshadow.com\/<\/a>&nbsp;publications\/s2012-shading-course\/<\/p>\n\n\n\n<p>[3] Colbert, Mark, and Jaroslav Krivanek, \u201cGPU-based Importance Sampling\u201d, in Hubert Nguyen, ed., GPU Gems 3, Addison-Wesley, pp. 459\u2013479, 2007.&nbsp;<a href=\"https:\/\/link.zhihu.com\/?target=http%3A\/\/http.developer.nvidia.com\/\" target=\"_blank\" rel=\"noreferrer noopener\">http:\/\/http.developer.nvidia.com\/<\/a>&nbsp;GPUGems3\/gpugems3_ch20.html<\/p>\n\n\n\n<p>[4] Coffin, Christina, \u201cSPU Based Deferred Shading in Battlefield 3 for Playstation 3\u201d, Game Developers Conference, March 2011.&nbsp;<a href=\"https:\/\/link.zhihu.com\/?target=http%3A\/\/www.slideshare.net\/DICEStudio\/spubased-deferred-\" target=\"_blank\" rel=\"noreferrer noopener\">http:\/\/www.slideshare.net\/DICEStudio\/spubased-deferred-<\/a>&nbsp;shading-in-battlefield-3-for-playstation-3<\/p>\n\n\n\n<p>[5] Cook, Robert L., and Kenneth E. Torrance, \u201cA Reflectance Model for Computer Graphics\u201d, Computer Graphics (SIGGRAPH \u201981 Proceedings), pp. 307\u2013316, July 1981.<\/p>\n\n\n\n<p>[6] Cook, Robert L., and Kenneth E. Torrance, \u201cA Reflectance Model for Computer Graphics\u201d, ACM Transactions on Graphics, vol. 1, no. 1, pp. 7\u201324, January 1982.&nbsp;<a href=\"https:\/\/link.zhihu.com\/?target=http%3A\/\/graphics.pixar\" target=\"_blank\" rel=\"noreferrer noopener\">http:\/\/graphics.pixar<\/a>. com\/library\/ReflectanceModel\/<\/p>\n\n\n\n<p>[7] Drobot, Michal , \u201cLighting Killzone: Shadow Fall\u201d, Digital Dragons, April 2013.&nbsp;<a href=\"https:\/\/link.zhihu.com\/?target=http%3A\/\/www\" target=\"_blank\" rel=\"noreferrer noopener\">http:\/\/www<\/a>.&nbsp;<a href=\"https:\/\/link.zhihu.com\/?target=http%3A\/\/guerrilla-games.com\/publications\/\" target=\"_blank\" rel=\"noreferrer noopener\">http:\/\/guerrilla-games.com\/publications\/<\/a><\/p>\n\n\n\n<p>[8] Gotanda, Yoshiharu, \u201cPractical Implementation of Physically-Based Shading Models at tri-Ace\u201d, part of \u201cPhysically-Based Shading Models in Film and Game Production\u201d, SIGGRAPH 2010 Course Notes.&nbsp;<a href=\"https:\/\/link.zhihu.com\/?target=http%3A\/\/renderwonk.com\/publications\/s2010-shading-course\/\" target=\"_blank\" rel=\"noreferrer noopener\">http:\/\/renderwonk.com\/publications\/s2010-shading-course\/<\/a><\/p>\n\n\n\n<p>[9] Hoffman, Naty, \u201cBackground: Physics and Math of Shading\u201d, part of \u201cPhysically Based Shad- ing in Theory and Practice\u201d, SIGGRAPH 2013 Course Notes.&nbsp;<a href=\"https:\/\/link.zhihu.com\/?target=http%3A\/\/blog.selfshadow.com\/\" target=\"_blank\" rel=\"noreferrer noopener\">http:\/\/blog.selfshadow.com\/<\/a>&nbsp;publications\/s2013-shading-course\/<\/p>\n\n\n\n<p>[10] Lagarde, S \u0301ebastien, \u201cSpherical Gaussian approximation for Blinn-Phong, Phong and Fresnel\u201d, June 2012.&nbsp;<a href=\"https:\/\/link.zhihu.com\/?target=http%3A\/\/seblagarde.wordpress.com\/2012\/06\/03\/spherical-gaussien-approximation-\" target=\"_blank\" rel=\"noreferrer noopener\">http:\/\/seblagarde.wordpress.com\/2012\/06\/03\/spherical-gaussien-approximation-<\/a>&nbsp;for-blinn-phong-phong-and-fresnel\/<\/p>\n\n\n\n<p>[11] Lazarov, Dimitar, \u201cGetting More Physical in Call of Duty: Black Ops II\u201d, part of \u201cPhysi- cally Based Shading in Theory and Practice\u201d, SIGGRAPH 2013 Course Notes.&nbsp;<a href=\"https:\/\/link.zhihu.com\/?target=http%3A\/\/blog\" target=\"_blank\" rel=\"noreferrer noopener\">http:\/\/blog<\/a>.&nbsp;<a href=\"https:\/\/link.zhihu.com\/?target=http%3A\/\/selfshadow.com\/publications\/s2013-shading-course\/\" target=\"_blank\" rel=\"noreferrer noopener\">http:\/\/selfshadow.com\/publications\/s2013-shading-course\/<\/a><\/p>\n\n\n\n<p>[12] Martinez, Adam, \u201cFaster Photorealism in Wonderland: Physically-Based Shading and Lighting at Sony Pictures Imageworks\u201d, part of \u201cPhysically-Based Shading Models in Film and Game Pro- duction\u201d, SIGGRAPH 2010 Course Notes.&nbsp;<a href=\"https:\/\/link.zhihu.com\/?target=http%3A\/\/renderwonk.com\/publications\/s2010-shading-\" target=\"_blank\" rel=\"noreferrer noopener\">http:\/\/renderwonk.com\/publications\/s2010-shading-<\/a>&nbsp;course\/<\/p>\n\n\n\n<p>[13] Mittring, Martin, and Bryan Dudash, \u201cThe Technology Behind the DirectX 11 Unreal Engine Samaritan Demo\u201d, Game Developer Conference 2011.&nbsp;<a href=\"https:\/\/link.zhihu.com\/?target=http%3A\/\/udn.epicgames.com\/Three\/rsrc\/\" target=\"_blank\" rel=\"noreferrer noopener\">http:\/\/udn.epicgames.com\/Three\/rsrc\/<\/a>&nbsp;Three\/DirectX11Rendering\/MartinM_GDC11_DX11_presentation.pdf<\/p>\n\n\n\n<p>[14] Mittring, Martin, \u201cThe Technology Behind the Unreal Engine 4 Elemental demo\u201d, part of \u201cAd- vances in Real-Time Rendering in 3D Graphics and Games Course\u201d, SIGGRAPH 2012. http: \/\/<a href=\"https:\/\/link.zhihu.com\/?target=http%3A\/\/www.unrealengine.com\/files\/misc\/The_Technology_Behind_the_Elemental_Demo_16x9_%282%29\" target=\"_blank\" rel=\"noreferrer noopener\">http:\/\/www.unrealengine.com\/files\/misc\/The_Technology_Behind_the_Elemental_Demo_16x9_(2)<\/a>.pdf<\/p>\n\n\n\n<p>[15] Oat, Chris, \u201cAmbient Aperture Lighting\u201d, SIGGRAPH 2006.&nbsp;<a href=\"https:\/\/link.zhihu.com\/?target=http%3A\/\/developer.amd.com\/\" target=\"_blank\" rel=\"noreferrer noopener\">http:\/\/developer.amd.com\/<\/a>&nbsp;wordpress\/media\/2012\/10\/Oat-AmbientApetureLighting.pdf<\/p>\n\n\n\n<p>[16] Picott, Kevin P., \u201cExtensions of the Linear and Area Lighting Models\u201d, Computers and Graphics, Volume 12 Issue 2, March 1992, pp. 31-38.&nbsp;<a href=\"https:\/\/link.zhihu.com\/?target=http%3A\/\/dx.doi.org\/10.1109\/38.124286\" target=\"_blank\" rel=\"noreferrer noopener\">http:\/\/dx.doi.org\/10.1109\/38.124286<\/a><\/p>\n\n\n\n<p>[17] Poulin, Pierre, and John Amanatides, \u201cShading and Shadowing with Linear Light Sources\u201d, IEEE Computer Graphics and Applications, 1991.&nbsp;<a href=\"https:\/\/link.zhihu.com\/?target=http%3A\/\/www.cse.yorku.ca\/~amana\/research\/\" target=\"_blank\" rel=\"noreferrer noopener\">http:\/\/www.cse.yorku.ca\/~amana\/research\/<\/a><\/p>\n\n\n\n<p>[18] Quilez, Inigo, \u201cSpherical ambient occlusion\u201d, 2006.&nbsp;<a href=\"https:\/\/link.zhihu.com\/?target=http%3A\/\/www.iquilezles.org\/www\/articles\/\" target=\"_blank\" rel=\"noreferrer noopener\">http:\/\/www.iquilezles.org\/www\/articles\/<\/a>&nbsp;sphereao\/sphereao.htm<\/p>\n\n\n\n<p>[19] Schlick, Christophe, \u201cAn Inexpensive BRDF Model for Physically-based Rendering\u201d, Computer Graphics Forum, vol. 13, no. 3, Sept. 1994, pp. 149\u2013162.&nbsp;<a href=\"https:\/\/link.zhihu.com\/?target=http%3A\/\/dept-info.labri.u-bordeaux.fr\/\" target=\"_blank\" rel=\"noreferrer noopener\">http:\/\/dept-info.labri.u-bordeaux.fr\/<\/a>&nbsp;~schlick\/DOC\/eur2.html<\/p>\n\n\n\n<p>[20] Snow, Ben, \u201cTerminators and Iron Men: Image-based lighting and physical shading at ILM\u201d, part of \u201cPhysically-Based Shading Models in Film and Game Production\u201d, SIGGRAPH 2010 Course Notes.&nbsp;<a href=\"https:\/\/link.zhihu.com\/?target=http%3A\/\/renderwonk.com\/publications\/s2010-shading-course\/\" target=\"_blank\" rel=\"noreferrer noopener\">http:\/\/renderwonk.com\/publications\/s2010-shading-course\/<\/a><\/p>\n\n\n\n<p>[21] Walter, Bruce, Stephen R. Marschner, Hongsong Li, Kenneth E. Torrance, \u201cMicrofacet Models for Refraction through Rough Surfaces\u201d, Eurographics Symposium on Rendering (2007), 195\u2013206, June 2007.&nbsp;<a href=\"https:\/\/link.zhihu.com\/?target=http%3A\/\/www.cs.cornell.edu\/~srm\/publications\/EGSR07-btdf.html\" target=\"_blank\" rel=\"noreferrer noopener\">http:\/\/www.cs.cornell.edu\/~srm\/publications\/EGSR07-btdf.html<\/a><\/p>\n\n\n\n<p>[22] Wang, Lifeng, Zhouchen Lin, Wenle Wang, and Kai Fu, \u201cOne-Shot Approximate Local Shading\u201d 2006.\u53d1\u5e03\u4e8e 2020-04-05\n\n<\/p>\n","protected":false},"excerpt":{"rendered":"<p>https:\/\/zhuanlan.zhihu.com\/p\/125459331 \u5229\u7528\u5047\u671f\u63a5\u7740\u628a\u5269\u4e0b\u7684\u90e8\u5206\u641e\u5b8c\u5427\uff0c [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"_links":{"self":[{"href":"https:\/\/blog.coolcoding.cn\/index.php?rest_route=\/wp\/v2\/posts\/3631"}],"collection":[{"href":"https:\/\/blog.coolcoding.cn\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/blog.coolcoding.cn\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/blog.coolcoding.cn\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/blog.coolcoding.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=3631"}],"version-history":[{"count":1,"href":"https:\/\/blog.coolcoding.cn\/index.php?rest_route=\/wp\/v2\/posts\/3631\/revisions"}],"predecessor-version":[{"id":3660,"href":"https:\/\/blog.coolcoding.cn\/index.php?rest_route=\/wp\/v2\/posts\/3631\/revisions\/3660"}],"wp:attachment":[{"href":"https:\/\/blog.coolcoding.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=3631"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blog.coolcoding.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=3631"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blog.coolcoding.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=3631"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}