{"id":4017,"date":"2021-12-24T22:57:00","date_gmt":"2021-12-24T14:57:00","guid":{"rendered":"https:\/\/www.yumefx.com\/?p=4017"},"modified":"2022-02-09T13:42:55","modified_gmt":"2022-02-09T05:42:55","slug":"z-buffer%e4%b8%8e%e6%b7%b1%e5%ba%a6%e6%b5%8b%e8%af%95%e8%af%a6%e8%a7%a3","status":"publish","type":"post","link":"https:\/\/www.yumefx.com\/?p=4017","title":{"rendered":"Z-Buffer\u4e0e\u6df1\u5ea6\u6d4b\u8bd5\u8be6\u89e3"},"content":{"rendered":"\n<h1 style=\"text-align: center;\">\u524d\u8a00<\/h1>\n<p>\u5728\u4e09\u7ef4\u573a\u666f\u4e2d\uff0c\u7ecf\u5e38\u4f1a\u51fa\u73b0\u7269\u4f53\u4e92\u76f8\u906e\u6321\u7684\u60c5\u51b5\uff0c\u5728\u4e0d\u8003\u8651\u534a\u900f\u660e\u56e0\u7d20\u7684\u60c5\u51b5\u4e0b\uff0c\u80af\u5b9a\u662f\u5148\u6e32\u67d3\u540e\u9762\u88ab\u906e\u6321\u7684\u7269\u4f53\uff0c\u518d\u6e32\u67d3\u524d\u9762\u7684\u7269\u4f53\u53e0\u4e0a\u53bb\uff0c\u7c7b\u4f3c\u6cb9\u753b\u7684\u9010\u5c42\u7ed8\u5236\u4e00\u6837\u3002<\/p>\n<p><img loading=\"lazy\" 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loading=\"lazy\" class=\"size-full wp-image-4063 aligncenter\" src=\"https:\/\/www.yumefx.com\/wp-content\/uploads\/2021\/12\/ZBuffering_02.png\" alt=\"\" width=\"515\" height=\"362\" srcset=\"https:\/\/www.yumefx.com\/wp-content\/uploads\/2021\/12\/ZBuffering_02.png 515w, https:\/\/www.yumefx.com\/wp-content\/uploads\/2021\/12\/ZBuffering_02-300x211.png 300w\" sizes=\"(max-width: 515px) 100vw, 515px\" \/><\/p>\n<p>\u56e0\u6b64\u5c31\u5f15\u5165\u4e86Z-depth buffer\uff08\u6df1\u5ea6\u7f13\u5b58\uff09\u7684\u6982\u5ff5\u3002<\/p>\n<h1>\u00a0<\/h1>\n<h1 style=\"text-align: center;\">ZDepth buffer<\/h1>\n<p>\u63d0\u5230ZDepth buffer\uff08\u6df1\u5ea6\u7f13\u5b58\uff09\uff0c\u5c31\u4f1a\u60f3\u5230frame buffer\uff08\u5e27\u7f13\u5b58\uff09\uff0c\u5e27\u7f13\u5b58\u662f\u7528\u6765\u8bb0\u5f55\u6bcf\u4e00\u4e2a\u50cf\u7d20\u7684\u989c\u8272\u7684\uff0c\u800c\u6df1\u5ea6\u7f13\u5b58\u5219\u662f\u7528\u6765\u8bb0\u5f55\u6bcf\u4e00\u4e2a\u50cf\u7d20\u7684\u6df1\u5ea6\u7684\uff0c\u5982\u4e0b\u56fe\u6240\u793a\u3002<\/p>\n<p><img loading=\"lazy\" class=\"size-full wp-image-4064 aligncenter\" src=\"https:\/\/www.yumefx.com\/wp-content\/uploads\/2021\/12\/ZBuffering_03.png\" alt=\"\" width=\"915\" height=\"413\" srcset=\"https:\/\/www.yumefx.com\/wp-content\/uploads\/2021\/12\/ZBuffering_03.png 915w, https:\/\/www.yumefx.com\/wp-content\/uploads\/2021\/12\/ZBuffering_03-300x135.png 300w, https:\/\/www.yumefx.com\/wp-content\/uploads\/2021\/12\/ZBuffering_03-768x347.png 768w\" sizes=\"(max-width: 915px) 100vw, 915px\" 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href=\"https:\/\/www.yumefx.com\/?p=3636\">\u6e32\u67d3\u7ba1\u7ebf\u57fa\u7840<\/a>\u300b\u4e00\u6587\u4e2d\u6709\u8bf4\u8fc7\uff0c\u7ecf\u8fc7\u9876\u70b9\u7740\u8272\u5668\u4ee5\u53ca\u5c4f\u5e55\u6620\u5c04\u540e\uff0c\u9876\u70b9\u5750\u6807\u4ece\u6a21\u578b\u7a7a\u95f4\u8f6c\u6362\u5230\u5c4f\u5e55\u7a7a\u95f4\uff0c\u5b9e\u73b0\u4e86\u4ece\u4e09\u7ef4\u5230\u4e8c\u7ef4\u5e73\u9762\u7684\u6620\u5c04\uff0c\u4f46z\u5750\u6807\u5e76\u672a\u88ab\u53bb\u6389\uff0c\u53ea\u662f\u88ab\u538b\u7f29\u5230\u4e86[0, 1]\u7684\u8303\u56f4\uff0c\u53ef\u4ee5\u7528\u6765\u8868\u793a\u8ddd\u79bb\u6444\u50cf\u673a\u7684\u8fdc\u8fd1\uff0c\u4e5f\u5c31\u662f\u6df1\u5ea6\u3002<\/p>\n<p data-pid=\"yBZjuhNE\">\u901a\u8fc7\u6df1\u5ea6\u503c\u5b9e\u73b0\u906e\u6321\u6e32\u67d3\u7684\u7b97\u6cd5\u5c31\u53eb\u505aZ-Buffer\u7b97\u6cd5\uff0c\u4e3b\u8981\u67093\u6b65\u3002<\/p>\n<ol>\n<li data-pid=\"a3FMZ97o\"><b>\u4e3a\u50cf\u7d20\u70b9\u7ef4\u6301\u4e00\u4e2a\u6df1\u5ea6\u6570\u7ec4\u8bb0\u4e3azbuffer\uff0c\u5176\u6bcf\u4e2a\u4f4d\u7f6e\u521d\u59cb\u503c\u7f6e\u4e3a\u65e0\u7a77\u5927\uff08\u5373\u79bb\u6444\u50cf\u673a\u65e0\u7a77\u8fdc\uff09\u3002<\/b><\/li>\n<li data-pid=\"a3FMZ97o\"><b style=\"font-size: inherit;\">Z-Test\uff1a\u904d\u5386\u6bcf\u4e2a\u4e09\u89d2\u5f62\u9762\u4e0a\u7684\u6bcf\u4e00\u4e2a\u50cf\u7d20\u70b9[x,y]\uff0cZ-Test\u7684\u53c2\u6570\u51b3\u5b9a\u4e86\u901a\u8fc7\u6df1\u5ea6\u6d4b\u8bd5\u7684\u6761\u4ef6\uff0c\u9ed8\u8ba4LEqual\u6a21\u5f0f\u4e0b\uff0c\u5982\u679c\u8be5\u50cf\u7d20\u70b9\u7684\u6df1\u5ea6\u503cz\u5c0f\u4e8e\u7b49\u4e8ezbuffer[x,y]\u4e2d\u7684\u503c\uff0c\u5219\u901a\u8fc7\u6df1\u5ea6\u6d4b\u8bd5\uff0c\u53ef\u4ee5\u8fdb\u884c\u4e0b\u4e00\u6b65\u3002<\/b><\/li>\n<li data-pid=\"a3FMZ97o\"><b style=\"font-size: inherit;\">Z-Write\uff1a\u6df1\u5ea6\u6d4b\u8bd5\u901a\u8fc7\u540e\uff0c\u4f1a\u68c0\u67e5\u6df1\u5ea6\u6d4b\u8bd5\u7684\u72b6\u6001Z-Write\uff0c\u6b64\u72b6\u6001\u51b3\u5b9a\u662f\u5426\u5c06\u5f53\u524d\u6df1\u5ea6\u503c\u5199\u5165zbuffer\u3002\u9ed8\u8ba4Z-Write On\uff0c\u66f4\u65b0zbuffer[x,y]\u503c\u4e3a\u8be5\u70b9\u6df1\u5ea6\u503cz\uff0c\u5e76\u66f4\u65b0frame buffer\u8be5\u50cf\u7d20\u70b9[x,y]\u7684\u989c\u8272\u4e3a\u8be5\u4e09\u89d2\u5f62\u9762\u4e0a\u7684\u8be5\u70b9\u7684\u989c\u8272\uff1b\u5f53Z-Write Off\u65f6\uff0czbuffer[x,y]\u503c\u4e0d\u6539\u53d8\uff0c\u53ea\u66f4\u65b0frame buffer\u8be5\u50cf\u7d20\u70b9[x,y]\u7684\u989c\u8272\u4e3a\u8be5\u4e09\u89d2\u5f62\u9762\u4e0a\u7684\u8be5\u70b9\u7684\u989c\u8272\u3002<\/b><\/li>\n<\/ol>\n<p data-pid=\"lLCV3Mio\">\u5176\u4e2dZ-Test\u53ef\u4ee5\u914d\u7f6e\u4e3a\u4ee5\u4e0b\u53c2\u6570\uff1a<\/p>\n<ul>\n<li data-pid=\"lLCV3Mio\">Greater\u2014\u2014\u6df1\u5ea6\u5927\u4e8e\u5f53\u524d\u6df1\u5ea6\u7f13\u5b58\u5219\u901a\u8fc7<\/li>\n<li data-pid=\"lLCV3Mio\">GEqual\u2014\u2014\u6df1\u5ea6\u5927\u4e8e\u7b49\u4e8e\u5f53\u524d\u6df1\u5ea6\u7f13\u5b58\u5219\u901a\u8fc7<\/li>\n<li data-pid=\"lLCV3Mio\">Less\u2014\u2014\u6df1\u5ea6\u5c0f\u4e8e\u5f53\u524d\u6df1\u5ea6\u7f13\u5b58\u5219\u901a\u8fc7<\/li>\n<li data-pid=\"lLCV3Mio\">LEqual\u2014\u2014\u6df1\u5ea6\u5c0f\u4e8e\u7b49\u4e8e\u5f53\u524d\u6df1\u5ea6\u7f13\u5b58\u5219\u901a\u8fc7\uff0c\u9ed8\u8ba4\u503c<\/li>\n<li data-pid=\"lLCV3Mio\">Equal\u2014\u2014\u6df1\u5ea6\u7b49\u4e8e\u5f53\u524d\u6df1\u5ea6\u7f13\u5b58\u5219\u901a\u8fc7<\/li>\n<li data-pid=\"lLCV3Mio\">NotEqual\u2014\u2014\u6df1\u5ea6\u4e0d\u7b49\u4e8e\u5f53\u524d\u6df1\u5ea6\u7f13\u5b58\u5219\u901a\u8fc7<\/li>\n<li data-pid=\"lLCV3Mio\">Always\uff08Off\uff09\u2014\u2014\u603b\u662f\u901a\u8fc7<\/li>\n<li data-pid=\"lLCV3Mio\">Never\u2014\u2014\u603b\u662f\u4e0d\u901a\u8fc7<\/li>\n<\/ul>\n<p data-pid=\"lLCV3Mio\">\u4e0b\u56fe\u5c31\u8868\u793aZ-Test\u4e3aLess\uff0cZ-Write\u4e3aOn\u65f6\u7684\u6df1\u5ea6\u6d4b\u8bd5\u8fc7\u7a0b\uff0c\u5176\u4e2dR\u8868\u793a\u65e0\u7a77\u5927\u3002<\/p>\n<p data-pid=\"lLCV3Mio\"><img loading=\"lazy\" class=\"size-full wp-image-4065 aligncenter\" src=\"https:\/\/www.yumefx.com\/wp-content\/uploads\/2021\/12\/ZBuffering_04.png\" alt=\"\" width=\"745\" height=\"484\" srcset=\"https:\/\/www.yumefx.com\/wp-content\/uploads\/2021\/12\/ZBuffering_04.png 745w, https:\/\/www.yumefx.com\/wp-content\/uploads\/2021\/12\/ZBuffering_04-300x195.png 300w\" sizes=\"(max-width: 745px) 100vw, 745px\" \/><\/p>\n<p data-pid=\"lLCV3Mio\">\u8fd9\u6837\uff0c\u6700\u540e\u4fdd\u7559\u4e0b\u6765\u7684\u6bcf\u4e2a\u50cf\u7d20\u5bf9\u5e94\u7684\u5c31\u662f\u8ddd\u79bb\u6444\u50cf\u673a\u6700\u8fd1\u7684\u4e09\u89d2\u5f62\u9762\u4e0a\u7684\u989c\u8272\u4e86\uff0c\u4e5f\u5c31\u5f97\u5230\u4e86\u6b63\u786e\u7684\u906e\u6321\u987a\u5e8f\u3002<\/p>\n<p data-pid=\"lLCV3Mio\">\u5f53Z-Test\u548cZ-Write\u4f7f\u7528\u5176\u4ed6\u53c2\u6570\uff0c\u518d\u914d\u5408\u6e32\u67d3\u961f\u5217\u7b49\u624b\u6bb5\uff0c\u5c31\u53ef\u4ee5\u5b9e\u73b0\u4e00\u4e9b\u5947\u7279\u7684\u6e32\u67d3\u6548\u679c\uff0c\u4f8b\u5982\u8f6e\u5ed3\u900f\u89c6\u6750\u8d28\u3001\u7b80\u6613\u7c92\u5b50\u6750\u8d28\u7b49\u3002<\/p>\n<p data-pid=\"lLCV3Mio\"><img loading=\"lazy\" class=\"size-full wp-image-4086 aligncenter\" src=\"https:\/\/www.yumefx.com\/wp-content\/uploads\/2021\/12\/ZBuffering_05.jpg\" alt=\"\" width=\"969\" height=\"567\" srcset=\"https:\/\/www.yumefx.com\/wp-content\/uploads\/2021\/12\/ZBuffering_05.jpg 969w, https:\/\/www.yumefx.com\/wp-content\/uploads\/2021\/12\/ZBuffering_05-300x176.jpg 300w, https:\/\/www.yumefx.com\/wp-content\/uploads\/2021\/12\/ZBuffering_05-768x449.jpg 768w\" sizes=\"(max-width: 969px) 100vw, 969px\" \/><\/p>\n<p data-pid=\"lLCV3Mio\">\u53e6\u5916<a href=\"https:\/\/www.yumefx.com\/?p=4003\">\u524d\u6587<\/a>\u4e2d\u6709\u8bf4\u8fc7SSAA\u7b49\u901a\u8fc7\u589e\u52a0\u91c7\u6837\u70b9\u8fdb\u884c\u53cd\u8d70\u6837\u7684\u6280\u672f\uff0c\u8fd9\u79cd\u60c5\u51b5\u4e0b\u4e00\u4e2a\u50cf\u7d20\u4f1a\u5bf9\u5e94\u591a\u4e2a\u91c7\u6837\u70b9\uff0c\u6b64\u65f6\u7684Z-buffer\u6df1\u5ea6\u7f13\u5b58\u9700\u8981\u5bf9\u6bcf\u4e00\u4e2a\u91c7\u6837\u70b9\u8fdb\u884c\u8ba1\u7b97\u624d\u80fd\u5f97\u5230\u6b63\u786e\u7684\u53cd\u8d70\u6837\u6548\u679c\u3002<\/p>\n<h1 data-pid=\"lLCV3Mio\">\u00a0<\/h1>\n<h1 style=\"text-align: center;\" data-pid=\"lLCV3Mio\">\u6df1\u5ea6\u503c\u7cbe\u5ea6<\/h1>\n<p>\u524d\u9762\u8bf4\u8fc7\uff0c\u6df1\u5ea6\u503c\u662f\u901a\u8fc7\u9876\u70b9\u5728\u5c4f\u5e55\u7a7a\u95f4\u7684Z\u5750\u6807\u5f97\u5230\u7684\uff0c\u6570\u503c\u8303\u56f4\u662f[0, 1]\uff0c\u7cbe\u5ea6\u4e00\u822c\u4e3a24\u4f4dfloat\u3002<\/p>\n<p>\u9876\u70b9\u7684z\u5750\u6807\u548c\u76f8\u673a\u8ddd\u79bb\u7684\u5173\u7cfb\u901a\u5e38\u662f\u7ebf\u6027\u7684\uff0c\u800c\u8003\u8651\u5230\u5728\u6444\u50cf\u673a\u89c6\u89d2\u4e0b\u8fd1\u5904\u7684\u7269\u4f53\u901a\u5e38\u9700\u8981\u66f4\u9ad8\u7684\u7cbe\u5ea6\u8fdb\u884c\u533a\u5206\uff0c\u8fdc\u5904\u7684\u7269\u4f53\u5219\u4e0d\u9700\u8981\u4ed4\u7ec6\u5bf9\u6bd4\u5206\u8fa8\u3002<\/p>\n<p>\u56e0\u6b64\u5b9e\u9645\u4f7f\u7528\u4e2d\u6709\u5fc5\u8981\u5bf9\u6df1\u5ea6\u503c\u8fdb\u884c\u975e\u7ebf\u6027\u5316\uff0c\u727a\u7272\u90e8\u5206\u8fdc\u5904\u7684\u7cbe\u5ea6\u8ba9\u8fd1\u5904\u7684\u7cbe\u5ea6\u66f4\u9ad8\uff0c\u8ba9\u6df1\u5ea6\u4e0e1\/z\u6210\u6b63\u6bd4\uff0c\u7c7b\u4f3c\u4e8eGamma2.2\u6821\u6b63\u7684\u539f\u7406\uff0c\u8ba9\u56fe\u5f62\u5b66\u7684\u8ba1\u7b97\u66f4\u7b26\u5408\u4eba\u773c\u7684\u76f4\u89c9\u3002<\/p>\n<p><img loading=\"lazy\" class=\"size-full wp-image-4095 aligncenter\" src=\"https:\/\/www.yumefx.com\/wp-content\/uploads\/2021\/12\/ZBuffering_06.png\" alt=\"\" width=\"525\" height=\"311\" srcset=\"https:\/\/www.yumefx.com\/wp-content\/uploads\/2021\/12\/ZBuffering_06.png 525w, https:\/\/www.yumefx.com\/wp-content\/uploads\/2021\/12\/ZBuffering_06-300x178.png 300w\" sizes=\"(max-width: 525px) 100vw, 525px\" \/><\/p>\n<p>\u8fd9\u4e00\u4e2a\u975e\u7ebf\u6027\u5316\u7684\u6b65\u9aa4\u901a\u5e38\u662f\u5185\u5d4c\u5728\u6295\u5f71\u77e9\u9635\u4e2d\u7684\uff0c\u4e5f\u5c31\u662f\u8bf4\u7ecf\u8fc7MVP\u77e9\u9635\u540e\u5f97\u5230\u7684Z\u5750\u6807\u5df2\u7ecf\u662f\u4e00\u4e2a\u975e\u7ebf\u6027\u6821\u6b63\u540e\u7684\u503c\u3002<\/p>\n<h1>\u00a0<\/h1>\n<h1 style=\"text-align: center;\">\u6df1\u5ea6\u51b2\u7a81<\/h1>\n<p>\u5f53\u4e24\u4e2a\u5e73\u9762\u975e\u5e38\u7d27\u5bc6\u5730\u5e73\u884c\u6392\u5217\u5728\u4e00\u8d77\u65f6\uff0c\u7ecf\u5e38\u4f1a\u51fa\u73b0\u5947\u602a\u7684\u95ea\u70c1\u548c\u6761\u7eb9\uff0c\u8fd9\u662f\u56e0\u4e3a\u6df1\u5ea6\u7f13\u51b2\u6ca1\u6709\u8db3\u591f\u7684\u7cbe\u5ea6\u6765\u5224\u65ad\u4e24\u4e2a\u5e73\u9762\u7684\u5148\u540e\u987a\u5e8f\uff0c\u7ed3\u679c\u5c31\u662f\u8fd9\u4e24\u4e2a\u5e73\u9762\u4e0d\u65ad\u5730\u5728\u5207\u6362\u524d\u540e\u987a\u5e8f\uff0c\u8fd9\u4e2a\u73b0\u8c61\u5c31\u53eb\u505a\u6df1\u5ea6\u51b2\u7a81(Z-fighting)\u3002<\/p>\n<p><img loading=\"lazy\" class=\"size-full wp-image-4096 aligncenter\" src=\"https:\/\/www.yumefx.com\/wp-content\/uploads\/2021\/12\/ZBuffering_07.png\" alt=\"\" width=\"727\" height=\"584\" srcset=\"https:\/\/www.yumefx.com\/wp-content\/uploads\/2021\/12\/ZBuffering_07.png 727w, https:\/\/www.yumefx.com\/wp-content\/uploads\/2021\/12\/ZBuffering_07-300x241.png 300w\" sizes=\"(max-width: 727px) 100vw, 727px\" \/><\/p>\n<p>\u8981\u60f3\u89e3\u51b3\u6df1\u5ea6\u51b2\u7a81\u95ee\u9898\u53ef\u4ee5\u5c1d\u8bd5\u4ee5\u4e0b\u4e09\u4e2a\u65b9\u6848\uff1a<\/p>\n<ol>\n<li><strong>\u4e0d\u8981\u628a\u591a\u4e2a\u7269\u4f53\u6446\u5f97\u592a\u9760\u8fd1\uff0c\u4ee5\u81f3\u4e8e\u5b83\u4eec\u7684\u4e00\u4e9b\u4e09\u89d2\u5f62\u91cd\u53e0<\/strong>\u3002\u901a\u8fc7\u5728\u4e24\u4e2a\u7269\u4f53\u4e4b\u95f4\u8bbe\u7f6e\u4e00\u4e2a\u65e0\u6cd5\u6ce8\u610f\u5230\u7684\u504f\u79fb\u503c\uff0c\u5c31\u53ef\u4ee5\u5b8c\u5168\u907f\u514d\u8fd9\u4e24\u4e2a\u7269\u4f53\u4e4b\u95f4\u7684\u6df1\u5ea6\u51b2\u7a81\u3002<\/li>\n<li><strong>\u5c3d\u53ef\u80fd\u5c06\u8fd1\u5e73\u9762\u8bbe\u7f6e\u8fdc\u4e00\u4e9b\u3002<\/strong>\u6df1\u5ea6\u503c\u7cbe\u5ea6\u5728\u8fd1\u5904\u662f\u975e\u5e38\u9ad8\u7684\uff0c\u6240\u4ee5\u5982\u679c\u6211\u4eec\u5c06\u8fd1\u5e73\u9762\u8fdc\u79bb\u89c2\u5bdf\u8005\uff0c\u5c31\u4f1a\u8ba9\u76ee\u6807\u7269\u4f53\u7cbe\u5ea6\u66f4\u9ad8\u3002\u7136\u800c\uff0c\u5c06\u8fd1\u5e73\u9762\u8bbe\u7f6e\u592a\u8fdc\u5c06\u4f1a\u5bfc\u81f4\u8fd1\u5904\u7684\u7269\u4f53\u88ab\u88c1\u526a\u6389\uff0c\u6240\u4ee5\u8fd9\u901a\u5e38\u9700\u8981\u4e0d\u65ad\u5fae\u8c03\u6765\u51b3\u5b9a\u6700\u9002\u5408\u7684\u573a\u666f\u7684\u8fd1\u5e73\u9762\u8ddd\u79bb\u3002<\/li>\n<li><strong>\u4f7f\u7528\u66f4\u9ad8\u7cbe\u5ea6\u7684\u6df1\u5ea6\u7f13\u51b2<\/strong>\u3002\u5927\u90e8\u5206\u6df1\u5ea6\u7f13\u51b2\u7684\u7cbe\u5ea6\u90fd\u662f24\u4f4dfloat\u7684\uff0c\u800c\u73b0\u5728\u5927\u90e8\u5206\u7684\u663e\u5361\u90fd\u652f\u630132\u4f4dfloat\u7684\u6df1\u5ea6\u7f13\u51b2\uff0c\u6240\u4ee5\uff0c\u727a\u7272\u6389\u4e00\u4e9b\u6027\u80fd\uff0c\u5c31\u80fd\u83b7\u5f97\u66f4\u9ad8\u7cbe\u5ea6\u7684\u6df1\u5ea6\u6d4b\u8bd5\uff0c\u51cf\u5c11\u6df1\u5ea6\u51b2\u7a81\u3002<\/li>\n<\/ol>\n<h1 data-pid=\"lLCV3Mio\">\u00a0<\/h1>\n<h1 style=\"text-align: center;\" data-pid=\"lLCV3Mio\">Early-Z\u6280\u672f<\/h1>\n<p>\u6df1\u5ea6\u6d4b\u8bd5\u8fd9\u4e00\u9636\u6bb5\u4f4d\u4e8e\u7247\u5143\u7740\u8272\u5668\u4e4b\u540e\u7684\u9010\u7247\u5143\u64cd\u4f5c\u9636\u6bb5\uff0c\u6ca1\u6709\u901a\u8fc7\u6df1\u5ea6\u6d4b\u8bd5\u7684\u7247\u5143\u4f1a\u88ab\u76f4\u63a5\u820d\u5f03\uff0c\u610f\u5473\u7740\u4f1a\u6709\u5f88\u591a\u65e0\u7528\u8ba1\u7b97\u3002<\/p>\n<p>\u56e0\u6b64\uff0c\u4e3a\u63d0\u9ad8\u6027\u80fd\uff0c\u5728\u7247\u5143\u7740\u8272\u5668\u4e4b\u524d\u5148\u8fdb\u884c\u4e00\u6b21\u6df1\u5ea6\u6d4b\u8bd5\uff0c\u5982\u679c\u6df1\u5ea6\u6d4b\u8bd5\u5931\u8d25\uff0c\u5c31\u76f4\u63a5\u820d\u5f03\u4e0d\u5fc5\u8fdb\u884c\u7247\u5143\u7740\u8272\u5668\u8ba1\u7b97\u4e86\uff0c\u4ece\u800c\u63d0\u5347\u6e32\u67d3\u6027\u80fd\uff0c\u8fd9\u79cd\u63d0\u524d\u8fdb\u884c\u6df1\u5ea6\u6d4b\u8bd5\u7684\u6280\u672f\u88ab\u79f0\u4e3aEarly-Z\u6280\u672f\u3002<\/p>\n<p>\u5728\u4f7f\u7528Early-Z\u65f6\uff0c\u867d\u7136\u5df2\u7ecf\u63d0\u524d\u8fdb\u884c\u4e86\u6df1\u5ea6\u6d4b\u8bd5\uff0c\u4f46\u5728\u9010\u7247\u5143\u64cd\u4f5c\u9636\u6bb5\u4ecd\u7136\u9700\u8981\u518d\u8fdb\u884c\u4e00\u6b21\u6df1\u5ea6\u6d4b\u8bd5\uff0c\u8fd9\u6837\u624d\u80fd\u4fdd\u8bc1\u6700\u7ec8\u906e\u6321\u6548\u679c\u7684\u6b63\u786e\u3002<\/p>\n<p>\u6b64\u65f6\u524d\u9762\u7684\u6df1\u5ea6\u6d4b\u8bd5\u88ab\u79f0\u4e3aZ-Cull\u6df1\u5ea6\u88c1\u526a\uff0c\u540e\u9762\u7684\u6df1\u5ea6\u6d4b\u8bd5\u88ab\u79f0\u4e3aZ-Test\u6df1\u5ea6\u68c0\u67e5\u3002<\/p>\n<p>\u9700\u8981\u6ce8\u610f\u7684\u662f\uff0c\u4ee5\u4e0b\u51e0\u79cd\u60c5\u51b5\u4e0b\u53ef\u80fd\u5bfc\u81f4Early-Z\u51fa\u73b0\u9519\u8bef\u7684\u6548\u679c\u3002<\/p>\n<ol>\n<li>Alpha Test\u6216\u8005Clip\/discard\u7b49\u4e22\u5f03\u7247\u5143\u7684\u60c5\u51b5\u2014\u2014\u4f8b\u5982\u6700\u524d\u9762\u7684\u7247\u5143\u901a\u8fc7\u4e86Early-Z\u6d4b\u8bd5\uff0c\u5374\u88ab\u5176\u4ed6\u8fd9\u4e9b\u64cd\u4f5c\u4e22\u5f03\uff0c\u5bfc\u81f4\u524d\u540e\u6240\u6709\u7684\u7247\u5143\u90fd\u88ab\u4e22\u5f03\u3002<\/li>\n<li>\u5f00\u542fAlpha Blend\u900f\u660e\u5ea6\u6df7\u5408\u2014\u2014\u4f8b\u5982\u6700\u524d\u9762\u7684\u7269\u4f53\u4e3a\u900f\u660e\uff0c\u9700\u8981\u6e32\u67d3\u540e\u9762\u7684\u7247\u5143\uff0c\u4f46\u540e\u9762\u7684\u7247\u5143\u5374\u88abEarly-Z\u4e22\u5f03\uff0c\u56e0\u6b64\u5f00\u542fAlpha Blend\u7684\u7269\u4f53\u9700\u8981\u5173\u95ed\u6df1\u5ea6\u5199\u5165\uff08ZWrite Off\uff09\u3002<\/li>\n<\/ol>\n<p>Early-Z\u6280\u672f\u542c\u8d77\u6765\u5f88\u9ad8\u6548\uff0c\u4f46\u5176\u5b9e\u4f18\u5316\u6548\u679c\u5e76\u4e0d\u7a33\u5b9a\uff0c\u6700\u7406\u60f3\u7684\u60c5\u51b5\u4e0b\u6240\u6709\u7269\u4f53\u90fd\u662f\u6309\u7531\u8fd1\u53ca\u8fdc\u987a\u5e8f\u8fdb\u884c\u6e32\u67d3\uff0c\u90a3\u4e48early-z\u53ef\u4ee5\u5b8c\u5168\u907f\u514d\u8fc7\u5ea6\u7ed8\u5236\uff1b\u4f46\u662f\u76f8\u53cd\u7684\u6392\u5e8f\u4e0b\uff0c\u5219\u4f1a\u8d77\u4e0d\u5230\u4efb\u4f55\u6548\u679c\u3002<\/p>\n<p>\u6240\u4ee5\u6709\u4e9b\u65f6\u5019\u4e3a\u4e86\u5b8c\u5168\u53d1\u6325early-z\u7684\u529f\u6548\uff0c\u4f1a\u5728\u6bcf\u5e27\u7ed8\u5236\u65f6\u5bf9\u573a\u666f\u7684\u7269\u4f53\u6309\u7167\u5230\u6444\u50cf\u673a\u7684\u8ddd\u79bb\u7531\u8fd1\u53ca\u8fdc\u8fdb\u884c\u6392\u5e8f\u3002\u4f46\u8fd9\u6837\u4f1a\u5bfc\u81f4\u65e0\u6cd5\u642d\u914d\u5408\u6279\u64cd\u4f5c\uff0c\u5e76\u4e14\u6392\u5e8f\u4f1a\u5728cpu\u7aef\u8fdb\u884c\uff0c\u5f53\u573a\u666f\u590d\u6742\u5230\u4e00\u5b9a\u7a0b\u5ea6\uff0c\u9891\u7e41\u7684\u6392\u5e8f\u5c06\u4f1a\u5360\u7528cpu\u7684\u5927\u91cf\u8ba1\u7b97\u8d44\u6e90\u3002<\/p>\n<p>\u4e3a\u4e86\u4f18\u5316\u8fd9\u4e2a\u95ee\u9898\uff0c\u5c31\u51fa\u73b0\u4e86Z-Prepass\u7684\u6280\u672f\u3002<\/p>\n<h1>\u00a0<\/h1>\n<h1 style=\"text-align: center;\">Z-Prepass<\/h1>\n<p>Z-Prepass\u7684\u505a\u6cd5\u662f\u5c06\u573a\u666f\u4e2d\u7269\u4f53\u7684shader\u505a\u4e24\u4e2apass\u3002<\/p>\n<p><strong>\u7b2c\u4e00\u4e2apass\u4ec5\u5199\u5165\u6df1\u5ea6\uff0c\u4e0d\u505a\u4efb\u4f55\u590d\u6742\u7684\u7247\u5143\u8ba1\u7b97\uff0c\u4e0d\u8f93\u51fa\u4efb\u4f55\u989c\u8272\u3002<\/strong><\/p>\n<p><strong>\u7b2c\u4e8c\u4e2apass<span class=\"notion-enable-hover\" data-token-index=\"1\" data-reactroot=\"\">\u5173\u95ed\u6df1\u5ea6\u5199\u5165<\/span>\uff0c\u5e76\u5c06<span class=\"notion-enable-hover\" data-token-index=\"3\" 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