{"id":4394,"date":"2022-01-28T22:56:00","date_gmt":"2022-01-28T14:56:00","guid":{"rendered":"https:\/\/www.yumefx.com\/?p=4394"},"modified":"2022-02-09T13:42:20","modified_gmt":"2022-02-09T05:42:20","slug":"shadow-mapping%e9%98%b4%e5%bd%b1%e6%98%a0%e5%b0%84","status":"publish","type":"post","link":"https:\/\/www.yumefx.com\/?p=4394","title":{"rendered":"Shadow Mapping\u9634\u5f71\u6620\u5c04"},"content":{"rendered":"\n<h1 style=\"text-align: center;\">\u524d\u8a00<\/h1>\n<p>\u524d\u9762\u51e0\u7bc7\u5173\u4e8e\u5149\u6805\u5316\u7684\u6587\u7ae0\u4e2d\u4ecb\u7ecd\u4e86\u5982\u4f55\u8ba1\u7b97\u7269\u4f53\u8868\u9762\u7684\u5149\u7167\uff0c\u4f46\u5e76\u672a\u63d0\u53ca\u9634\u5f71\u7684\u8ba1\u7b97\uff0c\u9634\u5f71\u9700\u8981\u5355\u72ec\u8fdb\u884c\u5904\u7406\uff0c\u76ee\u524d\u6700\u5e38\u7528\u7684\u9634\u5f71\u8ba1\u7b97\u6280\u672f\u4e4b\u4e00\u5c31\u662fShadow Mapping\u6280\u672f\uff0c\u4e5f\u5c31\u662f\u4fd7\u79f0\u7684\u9634\u5f71\u6620\u5c04\u6280\u672f\uff0c\u4eca\u5929\u5c31\u4ed4\u7ec6\u68b3\u7406\u4e00\u4e0b\u5177\u4f53\u7684\u539f\u7406\u3002<\/p>\n<h1>\u00a0<\/h1>\n<h1 style=\"text-align: center;\">Shadow Mapping\u5de5\u4f5c\u539f\u7406<\/h1>\n<p>\u5148\u6765\u601d\u8003\u4e00\u4e0b\uff0c\u4e3a\u4ec0\u4e48\u4f1a\u5b58\u5728\u9634\u5f71\uff1f<\/p>\n<p data-pid=\"3ytVnwBP\"><b>\u56e0\u4e3a\u5149\u6e90\u7167\u5c04\u4e0d\u5230\uff0c\u66f4\u5177\u4f53\u70b9\uff0c\u6444\u50cf\u673a\u80fd\u770b\u5230\u7684\u5730\u65b9\uff0c\u5149\u6e90\u201c\u770b\u201d\u4e0d\u89c1\u3002<\/b><\/p>\n<p data-pid=\"Tvp8KUEd\">\u800c\u8fd9\u6b63\u662f\u542f\u53d1Shadow Mapping\u8fd9\u79cd\u505a\u6cd5\u7684\u52a8\u673a\uff0c\u63a5\u4e0b\u6765\u6211\u4eec\u4fbf\u6765\u770b\u770b\u8be6\u7ec6\u8fc7\u7a0b\u662f\u600e\u4e48\u6837\u7684\u3002<\/p>\n<p data-pid=\"Tvp8KUEd\"><b>\u7b2c\u4e00\u4e2a\u9636\u6bb5\uff0c\u628a\u5149\u6e90\u5f53\u505a\u4e00\u4e2a\u6444\u50cf\u673a\u53bb\u6e32\u67d3\u4e00\u904d\u573a\u666f\uff0c\u7136\u540e\u5f97\u5230\u4e00\u5f20\u5149\u6e90\u5904\u53ef\u4ee5\u770b\u5230\u7684\u56fe\uff0c\u8fd9\u5f20\u56fe\u4e0d\u9700\u8981\u7740\u8272\uff0c\u53ea\u9700\u8981\u628a\u6df1\u5ea6\u8bb0\u5f55\u4e0b\u6765\u5373\u53ef\uff0c\u6b64\u65f6\u5f97\u5230\u7684\u8fd9\u4e2a\u6df1\u5ea6\u56fe\u5373\u4e3aShadow Map\u3002<\/b><\/p>\n<p data-pid=\"Tvp8KUEd\"><img loading=\"lazy\" class=\"size-full wp-image-4398 aligncenter\" src=\"https:\/\/www.yumefx.com\/wp-content\/uploads\/2022\/01\/ShadowMap_01.png\" alt=\"\" width=\"460\" height=\"525\" srcset=\"https:\/\/www.yumefx.com\/wp-content\/uploads\/2022\/01\/ShadowMap_01.png 460w, https:\/\/www.yumefx.com\/wp-content\/uploads\/2022\/01\/ShadowMap_01-263x300.png 263w\" sizes=\"(max-width: 460px) 100vw, 460px\" 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sizes=\"(max-width: 514px) 100vw, 514px\" \/><\/p>\n<p data-pid=\"Lj9ddqXt\"><b>\u5982\u679c\u8be5\u70b9\u6295\u5f71\u56de\u5149\u6e90\u89c6\u89d2\u7684\u5b9e\u9645\u6df1\u5ea6\u503c\u4e0d\u5927\u4e8e\u5728\u6df1\u5ea6\u56fe\u4e0a\u5bf9\u5e94\u7684\u6df1\u5ea6\u503c\uff08\u6ce8\u610f\u8fd9\u91cc\u7684\u6df1\u5ea6\u503c\u662f\u6d6e\u70b9\u6570\uff0c\u56e0\u4e3a\u7cbe\u5ea6\u95ee\u9898\u96be\u4ee5\u6bd4\u8f83\u4e24\u4e2a\u503c\u76f8\u7b49\uff09\uff0c\u5219\u8bf4\u660e\u6b64\u70b9\u53ef\u88ab\u5149\u6e90\u7167\u5c04\uff0c\u56e0\u6b64\u4e0d\u5728\u9634\u5f71\u4e2d\uff0c\u5982\u4e0a\u56fe\u9ec4\u8272\u7ebf\u7684\u8fd9\u79cd\u60c5\u51b5\u3002<\/b><\/p>\n<p data-pid=\"Lj9ddqXt\"><img loading=\"lazy\" class=\"size-full wp-image-4401 aligncenter\" src=\"https:\/\/www.yumefx.com\/wp-content\/uploads\/2022\/01\/ShadowMap_04.png\" alt=\"\" width=\"511\" height=\"502\" srcset=\"https:\/\/www.yumefx.com\/wp-content\/uploads\/2022\/01\/ShadowMap_04.png 511w, https:\/\/www.yumefx.com\/wp-content\/uploads\/2022\/01\/ShadowMap_04-300x295.png 300w\" sizes=\"(max-width: 511px) 100vw, 511px\" \/><\/p>\n<p data-pid=\"Lj9ddqXt\"><b>\u5982\u679c\u8be5\u70b9\u6295\u5f71\u56de\u5149\u6e90\u89c6\u89d2\u7684\u5b9e\u9645\u6df1\u5ea6\u503c\u5927\u4e8e\u5728\u6df1\u5ea6\u56fe\u4e0a\u5bf9\u5e94\u7684\u6df1\u5ea6\u503c\uff0c\u5219\u8bf4\u660e\u8be5\u70b9\u524d\u65b9\u6709\u7269\u4f53\u906e\u6321\uff0c\u56e0\u6b64\u5728\u9634\u5f71\u4e2d\uff0c\u5982\u4e0a\u56fe\u7ea2\u8272\u7ebf\u8fd9\u79cd\u60c5\u51b5\u3002<\/b><\/p>\n<p data-pid=\"Lj9ddqXt\">\u5982\u6b64\u4fbf\u80fd\u786e\u5b9a\u6bcf\u4e2a\u53ef\u89c1\u50cf\u7d20\u70b9\u662f\u5426\u5728\u9634\u5f71\u4e4b\u4e2d\u4e86\uff0c\u6548\u679c\u5982\u4e0b\u56fe\uff1a<\/p>\n<p data-pid=\"Lj9ddqXt\"><img loading=\"lazy\" class=\"size-full wp-image-4403 aligncenter\" src=\"https:\/\/www.yumefx.com\/wp-content\/uploads\/2022\/01\/ShadowMap_06.jpg\" alt=\"\" width=\"720\" height=\"358\" srcset=\"https:\/\/www.yumefx.com\/wp-content\/uploads\/2022\/01\/ShadowMap_06.jpg 720w, https:\/\/www.yumefx.com\/wp-content\/uploads\/2022\/01\/ShadowMap_06-300x149.jpg 300w\" sizes=\"(max-width: 720px) 100vw, 720px\" \/><\/p>\n<p data-pid=\"Lj9ddqXt\">\u5bf9\u5e94\u53ef\u89c6\u5316\u7684Shadow Map\u5982\u4e0b\uff0c\u8ddd\u79bb\u5149\u6e90\u8d8a\u8fd1\u4ee3\u8868\u6df1\u5ea6\u8d8a\u5c0f\uff0c\u6240\u4ee5\u989c\u8272\u8d8a\u9ed1\uff0c\u53cd\u4e4b\u4ea6\u7136\uff1a<\/p>\n<p data-pid=\"Lj9ddqXt\"><img loading=\"lazy\" class=\"size-full wp-image-4404 aligncenter\" src=\"https:\/\/www.yumefx.com\/wp-content\/uploads\/2022\/01\/ShadowMap_07.png\" alt=\"\" width=\"891\" height=\"516\" srcset=\"https:\/\/www.yumefx.com\/wp-content\/uploads\/2022\/01\/ShadowMap_07.png 891w, https:\/\/www.yumefx.com\/wp-content\/uploads\/2022\/01\/ShadowMap_07-300x174.png 300w, https:\/\/www.yumefx.com\/wp-content\/uploads\/2022\/01\/ShadowMap_07-768x445.png 768w\" sizes=\"(max-width: 891px) 100vw, 891px\" \/><\/p>\n<h1 data-pid=\"Lj9ddqXt\">\u00a0<\/h1>\n<h1 style=\"text-align: center;\" data-pid=\"Lj9ddqXt\">Shadow Map\u7684\u7cbe\u5ea6\u95ee\u9898<\/h1>\n<p>\u770b\u8d77\u6765Shadow Mapping\u5f88\u597d\u5730\u8ba1\u7b97\u51fa\u4e86\u9634\u5f71\uff0c\u4f46\u5b83\u5e26\u6765\u4e86\u5176\u5b83\u95ee\u9898\uff0c\u9996\u5148\u5c31\u662f\u7cbe\u5ea6\u95ee\u9898\u3002<\/p>\n<p><img loading=\"lazy\" class=\"size-full wp-image-4433 aligncenter\" src=\"https:\/\/www.yumefx.com\/wp-content\/uploads\/2022\/01\/ShadowMap_10.png\" alt=\"\" width=\"1146\" height=\"683\" srcset=\"https:\/\/www.yumefx.com\/wp-content\/uploads\/2022\/01\/ShadowMap_10.png 1146w, https:\/\/www.yumefx.com\/wp-content\/uploads\/2022\/01\/ShadowMap_10-300x179.png 300w, https:\/\/www.yumefx.com\/wp-content\/uploads\/2022\/01\/ShadowMap_10-1024x610.png 1024w, https:\/\/www.yumefx.com\/wp-content\/uploads\/2022\/01\/ShadowMap_10-768x458.png 768w\" sizes=\"(max-width: 1146px) 100vw, 1146px\" \/><\/p>\n<p data-pid=\"9d7IpKQ6\">\u53ef\u4ee5\u770b\u5230\u5730\u677f\u4e0a\u51fa\u73b0\u4e86\u4ea4\u66ff\u7684\u9ed1\u767d\u7ebf\uff0c\u8fd9\u79cd\u73b0\u8c61\u53eb\u505a<strong>\u9634\u5f71\u5931\u771f<\/strong>(Shadow Acne\uff0cAcne\u662f\u7c89\u523a\u7684\u610f\u601d)\uff0c\u4e0b\u56fe\u89e3\u91ca\u4e86\u6210\u56e0\uff1a<\/p>\n<p data-pid=\"9d7IpKQ6\"><img loading=\"lazy\" class=\"size-full wp-image-4434 aligncenter\" src=\"https:\/\/www.yumefx.com\/wp-content\/uploads\/2022\/01\/ShadowMap_11.png\" alt=\"\" width=\"791\" height=\"380\" srcset=\"https:\/\/www.yumefx.com\/wp-content\/uploads\/2022\/01\/ShadowMap_11.png 791w, https:\/\/www.yumefx.com\/wp-content\/uploads\/2022\/01\/ShadowMap_11-300x144.png 300w, https:\/\/www.yumefx.com\/wp-content\/uploads\/2022\/01\/ShadowMap_11-768x369.png 768w\" sizes=\"(max-width: 791px) 100vw, 791px\" \/><\/p>\n<p data-pid=\"9d7IpKQ6\">Shadow Map\u4e2d\u6bcf\u4e2a\u50cf\u7d20\u8bb0\u5f55\u4e86\u4e00\u4e2a\u6df1\u5ea6\u503c\uff0c\u5bf9\u5e94\u4e86\u5e73\u9762\u4e0a\u7684\u4e00\u4e2a\u533a\u57df\uff0c\u7531\u4e8eShadow Map\u7684\u5206\u8fa8\u7387\u80af\u5b9a\u662f\u6709\u9650\u7684\uff0c\u5176\u8bb0\u5f55\u7684\u6df1\u5ea6\u503c\u5fc5\u7136\u662f\u79bb\u6563\u5316\u7684\uff0c\u800c\u5e73\u9762\u672c\u8eab\u662f\u8fde\u7eed\u7684\uff0c\u8fd9\u5c31\u9020\u6210\u5e73\u9762\u4e0a\u4e00\u5b9a\u5927\u5c0f\u7684\u533a\u57df\u5185\u7684\u6df1\u5ea6\u503c\u6709\u4e00\u5b9a\u5dee\u522b\uff0c\u4f46\u5bf9\u5e94\u5728Shadow map\u4e0a\u662f\u4e00\u4e2a\u76f8\u540c\u7684\u6df1\u5ea6\u503c\u3002<\/p>\n<p data-pid=\"9d7IpKQ6\">\u800c\u5728\u67e5\u8be2Shadow Mapping\u65f6\u4e0d\u91c7\u7528\u53cc\u7ebf\u6027\u63d2\u503c\uff0c\u53ea\u5bfb\u627e\u6700\u8fd1\u7684\u70b9\uff0c\u56e0\u4e3a\u5018\u82e5\u63d2\u503c\u53d1\u751f\u5728\u7269\u4f53\u8fb9\u7f18\u65f6\uff0c\u4e0e\u76f8\u90bb\u70b9\u7684\u6df1\u5ea6\u5dee\u8ddd\u5f88\u5927\uff0c\u4f1a\u5bfc\u81f4\u63d2\u503c\u7ed3\u679c\u6709\u5f88\u5927\u7684\u8bef\u5dee\u3002<\/p>\n<p data-pid=\"9d7IpKQ6\">\u56fe\u4e2d\u7d2b\u8272\u7684\u952f\u9f7f\u72b6\u6298\u7ebf\uff0c\u6f14\u793a\u4e86shadow map\u4e0a\u6df1\u5ea6\u503c\u7684\u53d8\u5316\u3002\u800cshadow map\u7b97\u6cd5\u7b2c2\u4e2apass\u4e2d\uff0c\u8ba1\u7b97\u70b9\u5728\u5149\u6e90\u89c6\u89d2\u7684\u6df1\u5ea6\u503c\u65f6\uff0c\u8ba1\u7b97\u5f97\u5230\u7684\u662f\u4e00\u4e2a\u6d6e\u70b9\u6570\u7684\u6bd4\u8f83\u7cbe\u786e\u7684\u6df1\u5ea6\u503c\u3002<\/p>\n<p data-pid=\"9d7IpKQ6\">\u4f8b\u5982\u56fe\u4e2d\u7ea2\u8272\u7c97\u7ebf\u6807\u51fa\u7684\u533a\u57df\uff0c\u8fd9\u4e2a\u533a\u57df\u4e2d\u6bcf\u4e2a\u70b9\u5230\u5149\u6e90\u7684\u6df1\u5ea6\u503c\u90fd\u662f\u4e0d\u540c\u7684\uff0c\u4f46\u662f\u7531\u4e8e\u8fd9\u4e2a\u533a\u57df\u5bf9\u5e94\u7684Shadow Map\u4e0a\u7684\u50cf\u7d20\u8bb0\u5f55\u7684\u6df1\u5ea6\u6bd4\u8fd9\u4e2a\u533a\u57df\u8ba1\u7b97\u51fa\u6765\u7684\u6df1\u5ea6\u8981\u5c0f\uff0c\u6240\u4ee5\u8fd9\u4e2a\u533a\u57df\u7684\u7247\u6bb5\u90fd\u88ab\u906e\u6321\u4e86\uff0c\u4ea7\u751f\u4e86\u9634\u5f71\u3002<\/p>\n<p data-pid=\"9d7IpKQ6\">\u800c\u540c\u7406\u56fe\u4e2d\u7ea2\u8272\u7c97\u7ebf\u5de6\u4fa7\u7684\u5c0f\u5757\u533a\u57df\uff0c\u5bf9\u5e94\u7684Shadow Map\u4e0a\u7684\u50cf\u7d20\u8bb0\u5f55\u7684\u6df1\u5ea6\u6bd4\u8fd9\u4e2a\u533a\u57df\u8ba1\u7b97\u51fa\u6765\u7684\u6df1\u5ea6\u8981\u5927\uff0c\u6240\u4ee5\u8fd9\u4e2a\u533a\u57df\u7684\u7247\u6bb5\u6ca1\u6709\u88ab\u906e\u6321\uff0c\u4e0d\u4f1a\u4ea7\u751f\u9634\u5f71\u3002<\/p>\n<p data-pid=\"9d7IpKQ6\">\u8fd9\u6837\u6bcf\u4e2a\u79bb\u6563\u5316\u6df1\u5ea6\u503c\u5bf9\u5e94\u7684\u533a\u57df\uff0c\u6709\u4e00\u534a\u6709\u9634\u5f71\uff0c\u53e6\u4e00\u534a\u6ca1\u6709\u9634\u5f71\uff0c\u56e0\u6b64\u6700\u540e\u7ed3\u679c\u5c31\u662f\u76f8\u9694\u7684\u6761\u7eb9\u3002<\/p>\n<p data-pid=\"9d7IpKQ6\">\u7531\u4e8e\u5176\u5b9e\u662f\u88ab\u81ea\u5df1\u5728Shadow Map\u4e2d\u8bb0\u5f55\u7684\u6df1\u5ea6\u503c\u6240\u906e\u6321\uff0c\u8fd9\u79cd\u73b0\u8c61\u4e5f\u88ab\u53eb\u505a\u81ea\u906e\u6321\uff08self occlusion\uff09\u3002<\/p>\n<p data-pid=\"9d7IpKQ6\">\u5373\u4f7f\u591a\u8017\u8d39\u6027\u80fd\u63d0\u9ad8\u6df1\u5ea6\u56fe\u7684\u5206\u8fa8\u7387\uff0c\u4e5f\u53ea\u80fd\u4e00\u5b9a\u7a0b\u5ea6\u4f18\u5316\u5e76\u4e0d\u80fd\u5b8c\u5168\u89e3\u51b3\u8fd9\u79cd\u81ea\u906e\u6321\u95ee\u9898\uff0c\u5e76\u4e14\u5bf9\u4e8e\u5927\u89c4\u6a21\u7684\u573a\u666f\u6765\u8bf4\uff0c\u9634\u5f71\u56fe\u7684\u7cbe\u5ea6\u8981\u6c42\u4f1a\u66f4\u9ad8\uff0c\u800c\u5f15\u64ce\u5bf9\u4e8e\u7eb9\u7406\u56fe\u7247\u4e00\u822c\u662f\u6709\u6700\u5927\u5206\u8fa8\u7387\u9650\u5236\u7684\uff0c\u8fd9\u4e2a\u65f6\u5019\u5c31\u5f97\u7528\u5176\u4ed6\u7684\u89e3\u51b3\u65b9\u6848\u4e86\u3002<\/p>\n<h3 data-pid=\"9d7IpKQ6\">\u00a0<\/h3>\n<h3 data-pid=\"9d7IpKQ6\">Shadow Bias\uff08\u9634\u5f71\u504f\u79fb\uff09<\/h3>\n<p data-pid=\"9d7IpKQ6\">\u7531\u81ea\u906e\u6321\u95ee\u9898\u4ea7\u751f\u7684\u539f\u56e0\u5c31\u80fd\u770b\u51fa\uff0c\u53ea\u9700\u8981\u5c06\u7269\u4f53\u8868\u9762\u7684\u6df1\u5ea6\u7a0d\u5fae\u5f80\u5149\u7684\u65b9\u5411\u504f\u79fb\u5c31\u80fd\u8ba9\u81ea\u906e\u6321\u51e0\u4e4e\u4e0d\u53d1\u751f\uff0c\u8fd9\u6837\u7247\u6bb5\u5c31\u4e0d\u4f1a\u88ab\u9519\u8bef\u5730\u8ba4\u4e3a\u5728\u8868\u9762\u4e4b\u4e0b\u4e86\uff0c\u8fd9\u79cd\u6280\u672f\u5c31\u53eb\u505aShadow Bias\uff08\u9634\u5f71\u504f\u79fb\uff09\u3002<\/p>\n<p data-pid=\"9d7IpKQ6\"><img loading=\"lazy\" class=\"size-full wp-image-4435 aligncenter\" src=\"https:\/\/www.yumefx.com\/wp-content\/uploads\/2022\/01\/ShadowMap_12.png\" alt=\"\" width=\"600\" height=\"195\" srcset=\"https:\/\/www.yumefx.com\/wp-content\/uploads\/2022\/01\/ShadowMap_12.png 600w, https:\/\/www.yumefx.com\/wp-content\/uploads\/2022\/01\/ShadowMap_12-300x98.png 300w\" sizes=\"(max-width: 600px) 100vw, 600px\" \/><\/p>\n<p data-pid=\"9d7IpKQ6\">\u4e3a\u4e86\u4fdd\u8bc1\u9634\u5f71\u504f\u79fb\u503c\u5bf9\u4e8e\u8fd1\u5904\u548c\u8fdc\u5904\u6709\u76f8\u8fd1\u7684\u6548\u679c\uff0c\u9634\u5f71\u504f\u79fb\u7684\u5355\u4f4d\u662f\u6df1\u5ea6\u56fe\u7684\u50cf\u7d20\uff0c\u8fd9\u6837\u5728\u6539\u53d8\u6df1\u5ea6\u56fe\u5206\u8fa8\u7387\u65f6\uff0c\u9634\u5f71\u504f\u79fb\u7684\u503c\u4e5f\u4f1a\u81ea\u52a8\u8ddf\u968f\u7f29\u653e\u3002<\/p>\n<p data-pid=\"9d7IpKQ6\">\u5e76\u4e14\u4e3a\u4e86\u8ba9\u573a\u666f\u4e2d\u4e0d\u540c\u89d2\u5ea6\u7684\u5e73\u9762\u7684\u504f\u79fb\u6548\u679c\u4e00\u81f4\uff0c\u8fd8\u53ef\u4ee5\u4f7f\u7528\u5e73\u9762\u6cd5\u7ebf\u4e0e\u5149\u6e90\u65b9\u5411\u505a\u70b9\u4e58\u518d\u5bf9\u9634\u5f71\u504f\u79fb\u503c\u8fdb\u884c\u7f29\u653e\uff0c\u8fd9\u6837\u50cf\u5730\u677f\u8fd9\u6837\u7684\u8868\u9762\u51e0\u4e4e\u4e0e\u5149\u6e90\u5782\u76f4\uff0c\u5f97\u5230\u7684\u504f\u79fb\u5c31\u5f88\u5c0f\uff0c\u800c\u6bd4\u5982\u5899\u9762\u8fd9\u79cd\u8868\u9762\u5f97\u5230\u7684\u504f\u79fb\u5c31\u66f4\u5927\u3002<\/p>\n<p data-pid=\"9d7IpKQ6\">\u9700\u8981\u8bf4\u660e\u7684\u662f\u9634\u5f71\u504f\u79fb\u662f\u4e00\u79cd\u6539\u5584\u65b9\u6848\uff0c\u5e76\u6ca1\u6709\u8ba9\u81ea\u906e\u6321\u95ee\u9898\u672c\u8d28\u4e0a\u6d88\u5931\uff0c\u53ea\u662f\u907f\u514d\u8fd9\u4e00\u73b0\u8c61\u8868\u73b0\u51fa\u6765\u3002Shadow Bias\u4e5f\u6ca1\u6709\u7edd\u5bf9\u6709\u6548\u7684\u503c\uff0c\u9700\u8981\u6839\u636e\u573a\u666f\u5b9e\u9645\u60c5\u51b5\u591a\u6b21\u6d4b\u8bd5\uff0c\u9009\u62e9\u5408\u9002\u7684\u503c\u3002<\/p>\n<p data-pid=\"9d7IpKQ6\">\u8fc7\u5927\u7684\u9634\u5f71\u504f\u79fb\u503c\u53cd\u800c\u4f1a\u5e26\u6765\u53e6\u4e00\u79cd\u95ee\u9898\uff0c\u56e0\u4e3a\u5bf9\u7269\u4f53\u7684\u5b9e\u9645\u6df1\u5ea6\u5e94\u7528\u4e86\u5e73\u79fb\uff0c\u5f53\u504f\u79fb\u8db3\u591f\u5927\u65f6\uff0c\u8089\u773c\u53ef\u4ee5\u770b\u51fa\u9634\u5f71\u76f8\u5bf9\u5b9e\u9645\u7269\u4f53\u4f4d\u7f6e\u7684\u504f\u79fb\uff0c\u8fd9\u79cd\u73b0\u8c61\u88ab\u79f0\u4e3aPeter Panning\uff0c\u56e0\u4e3a\u7269\u4f53\u770b\u8d77\u6765\u8f7b\u8f7b\u60ac\u6d6e\u5728\u8868\u9762\u4e4b\u4e0a\uff08Peter Pan\u6307\u7684\u662f\u7ae5\u8bdd\u6545\u4e8b\u91cc\u4f1a\u98de\u7684\u5c0f\u7537\u5b69\u5f7c\u5f97\u6f58\uff0c\u800cpanning\u6709\u5e73\u79fb\u3001\u60ac\u6d6e\u4e4b\u610f\uff09\u3002<\/p>\n<p data-pid=\"9d7IpKQ6\"><img loading=\"lazy\" class=\"size-full wp-image-4437 aligncenter\" src=\"https:\/\/www.yumefx.com\/wp-content\/uploads\/2022\/01\/ShadowMap_14.jpg\" alt=\"\" width=\"620\" height=\"320\" srcset=\"https:\/\/www.yumefx.com\/wp-content\/uploads\/2022\/01\/ShadowMap_14.jpg 620w, https:\/\/www.yumefx.com\/wp-content\/uploads\/2022\/01\/ShadowMap_14-300x155.jpg 300w\" sizes=\"(max-width: 620px) 100vw, 620px\" \/><\/p>\n<p data-pid=\"9d7IpKQ6\">\u539f\u56e0\u4e5f\u5f88\u7b80\u5355\uff0c\u9634\u5f71\u9760\u8fd1\u7269\u4f53\u7684\u4f4d\u7f6e\u672c\u6765\u5e94\u8be5\u6709\u9634\u5f71\u7684\u5730\u65b9\u56e0\u4e3a\u6df1\u5ea6\u504f\u79fb\u5bfc\u81f4\u6df1\u5ea6\u503c\u53d8\u5c0f\u4f4e\u4e8e\u6df1\u5ea6\u56fe\u4e0a\u8bb0\u5bf9\u5e94\u7684\u6df1\u5ea6\u503c\uff0c\u4ece\u800c\u88ab\u5224\u5b9a\u4e3a\u6ca1\u6709\u906e\u6321\uff0c\u56e0\u6b64\u4e0d\u518d\u8ba1\u7b97\u9634\u5f71\u3002<\/p>\n<h3 data-pid=\"9d7IpKQ6\">\u00a0<\/h3>\n<h3 data-pid=\"9d7IpKQ6\">Front Face Culling\uff08\u6b63\u9762\u5254\u9664\uff09<\/h3>\n<p data-pid=\"9d7IpKQ6\">\u9664\u4e86\u9634\u5f71\u504f\u79fb\u5916\uff0c\u8fd8\u53ef\u4ee5\u91c7\u7528\u6b63\u9762\u5254\u9664\u65b9\u5f0f\u89e3\u51b3\u81ea\u906e\u6321\u95ee\u9898\uff0c\u5f53\u6e32\u67d3\u6df1\u5ea6\u56fe\u65f6\u5019\u5254\u9664\u906e\u6321\u7269\u4f53\u7684\u6b63\u9762\uff0c\u5b9e\u9645\u4e0a\u662f\u5bf9\u6df1\u5ea6\u56fe\u505a\u4e86\u504f\u79fb\uff0c\u8ba9\u81ea\u906e\u6321\u4e0d\u518d\u51fa\u73b0\u3002<\/p>\n<p><img loading=\"lazy\" class=\"size-full wp-image-4436 aligncenter\" src=\"https:\/\/www.yumefx.com\/wp-content\/uploads\/2022\/01\/ShadowMap_13.png\" alt=\"\" width=\"600\" height=\"259\" srcset=\"https:\/\/www.yumefx.com\/wp-content\/uploads\/2022\/01\/ShadowMap_13.png 600w, https:\/\/www.yumefx.com\/wp-content\/uploads\/2022\/01\/ShadowMap_13-300x130.png 300w\" sizes=\"(max-width: 600px) 100vw, 600px\" \/><\/p>\n<p>\u56e0\u4e3a\u81ea\u906e\u6321\u53ea\u6709\u5728\u4e00\u4e2a\u8868\u9762\u80fd\u540c\u65f6\u88ab\u6211\u4eec\u773c\u775b\u548c\u5149\u7ebf\u770b\u5230\u7684\u60c5\u51b5\u4e0b\u624d\u53ef\u80fd\u53d1\u751f\uff0c\u56e0\u6b64\u76f4\u63a5\u5c06\u5149\u7ebf\u770b\u5230\u7684\u8868\u9762\u6539\u6210\u4e0d\u6e32\u67d3\u7684\u5176\u4ed6\u9762\uff0c\u5c31\u53ef\u4ee5\u4ece\u672c\u8d28\u4e0a\u9884\u9632\u81ea\u906e\u6321\u95ee\u9898\u3002<\/p>\n<p>\u4f46\u5254\u9664\u7269\u4f53\u7684\u6b63\u9762\u9700\u8981\u4fdd\u8bc1\u7269\u4f53\u6709\u80cc\u9762\uff0c\u5982\u679c\u906e\u6321\u7269\u4f53\u53ea\u662f\u4e00\u4e2a\u5355\u5c42\u5e73\u9762\uff0c\u5c31\u4e0d\u4f1a\u6709\u6548\u4e86\u3002\u5e76\u4e14\u8d34\u8fd1\u9634\u5f71\u7684\u7269\u4f53\u4ecd\u7136\u4f1a\u51fa\u73b0\u6f0f\u5149\u7b49\u4e0d\u6b63\u786e\u7684\u6548\u679c\uff0c\u56e0\u6b64\u6b63\u9762\u5254\u9664\u540c\u6837\u5c5e\u4e8e\u4e00\u79cd\u8865\u6551\u65b9\u6848\uff0c\u4f7f\u7528\u65f6\u4e5f\u8981\u4ed4\u7ec6\u659f\u914c\u3002<\/p>\n<h1 data-pid=\"Lj9ddqXt\">\u00a0<\/h1>\n<h1 style=\"text-align: center;\" data-pid=\"Lj9ddqXt\">Shadow Map\u7684\u8d70\u6837\u95ee\u9898<\/h1>\n<h3 data-pid=\"9d7IpKQ6\">\u900f\u89c6\u6295\u5f71\u5bfc\u81f4\u7684\u8d70\u6837<\/h3>\n<p data-pid=\"9d7IpKQ6\">\u5728\u7b2c\u4e00\u6b65\u751f\u6210\u5149\u6e90\u89c6\u89d2\u7684Shadow Map\u65f6\uff0c\u5982\u679c\u5149\u6e90\u4e0e\u6444\u50cf\u673a\u7684\u5939\u89d2\u6bd4\u8f83\u5927\u65f6\uff0c\u53ef\u80fd\u4f1a\u4ea7\u751f\u900f\u89c6\u8d70\u6837\uff0c\u8ddd\u79bb\u5149\u6e90\u8d8a\u8fdc\u7684\u9634\u5f71\u952f\u9f7f\u8d8a\u660e\u663e\u3002<\/p>\n<p data-pid=\"9d7IpKQ6\"><img loading=\"lazy\" class=\"size-full wp-image-4439 aligncenter\" src=\"https:\/\/www.yumefx.com\/wp-content\/uploads\/2022\/01\/ShadowMap_16.png\" alt=\"\" width=\"697\" height=\"447\" srcset=\"https:\/\/www.yumefx.com\/wp-content\/uploads\/2022\/01\/ShadowMap_16.png 697w, https:\/\/www.yumefx.com\/wp-content\/uploads\/2022\/01\/ShadowMap_16-300x192.png 300w\" sizes=\"(max-width: 697px) 100vw, 697px\" \/><\/p>\n<p data-pid=\"9d7IpKQ6\">\u539f\u56e0\u548c<a href=\"https:\/\/www.yumefx.com\/?p=4278\">\u524d\u6587<\/a>\u8bb2\u7684footprint\u73b0\u8c61\u7c7b\u4f3c\uff0c\u5bf9\u4e8e\u5149\u6e90\u8fd9\u4e2a\u4f2a\u6444\u50cf\u673a\u6765\u8bf4\uff0c\u8ddd\u79bb\u8d8a\u8fdc\uff0c\u5c4f\u5e55\u50cf\u7d20\u7684\u8986\u76d6\u533a\u57df\u8d8a\u5927\uff0c\u53cd\u8fc7\u6765\u5c31\u662f\u8d8a\u8fdc\u7684\u533a\u57df\u50cf\u7d20\u7cbe\u5ea6\u8d8a\u4f4e\u3002<\/p>\n<p data-pid=\"9d7IpKQ6\">\u8981\u89e3\u51b3\u900f\u89c6\u8d70\u6837\u95ee\u9898\uff0c\u6700\u6709\u6548\u7684\u89e3\u51b3\u65b9\u6848\u662fCascaded Shadow Mapping\uff08\u7ea7\u8054\u9634\u5f71\u6620\u5c04\uff09\uff0c\u539f\u7406\u662f\u628a\u89c6\u9525\u4f53\u5206\u5272\u6210\u591a\u4e2a\u5b50\u89c6\u9525\u4f53\uff0c\u4e3a\u6bcf\u4e2a\u89c6\u9525\u4f53\u8ba1\u7b97\u72ec\u7acb\u7684\u76f8\u7b49\u5927\u5c0f\u7684\u9634\u5f71\u6620\u5c04\u3002<\/p>\n<p data-pid=\"9d7IpKQ6\"><img loading=\"lazy\" class=\"size-full wp-image-4478 aligncenter\" src=\"https:\/\/www.yumefx.com\/wp-content\/uploads\/2022\/01\/ShadowMap_17.jpg\" alt=\"\" width=\"279\" height=\"257\" \/><\/p>\n<p data-pid=\"9d7IpKQ6\">\u4f8b\u5982\u4e0a\u56fe\u4e2d\u5c06\u89c6\u9525\u4f53\u5206\u6210\u4e24\u90e8\u5206\uff0c\u4e24\u90e8\u5206\u5b50\u89c6\u9525\u4f53\u7684\u5206\u8fa8\u7387\u76f8\u540c\uff0c\u4f46\u8986\u76d6\u8303\u56f4\u4e0d\u4e00\u6837\uff0c\u8ddd\u79bb\u6444\u50cf\u673a\u8d8a\u8fd1\u7684\u5b50\u89c6\u9525\u4f53\u8986\u76d6\u8303\u56f4\u8d8a\u5c0f\uff0c\u50cf\u7d20\u7cbe\u5ea6\u8d8a\u9ad8\u3002<\/p>\n<h3 data-pid=\"9d7IpKQ6\">\u00a0<\/h3>\n<h3 data-pid=\"9d7IpKQ6\">\u91c7\u6837Shadow Map\u5bfc\u81f4\u7684\u8d70\u6837<\/h3>\n<p>\u800c\u5728\u7b2c\u4e8c\u6b65\u4ece\u6444\u50cf\u673a\u89c6\u89d2\u5bf9Shadow Map\u8fdb\u884c\u91c7\u6837\u5bf9\u6bd4\u65f6\uff0c\u7531\u4e8e\u6df1\u5ea6\u56fe\u662f\u6709\u5206\u8fa8\u7387\u7684\u56fe\u7247\uff0c\u91c7\u6837\u5206\u8fa8\u7387\u4e0d\u591f\u65f6\u5f97\u5230\u7684\u9634\u5f71\u4e5f\u4f1a\u4ea7\u751f\u952f\u9f7f\u3002<\/p>\n<p><img loading=\"lazy\" class=\"size-full wp-image-4438 aligncenter\" src=\"https:\/\/www.yumefx.com\/wp-content\/uploads\/2022\/01\/ShadowMap_15.png\" alt=\"\" width=\"695\" height=\"411\" srcset=\"https:\/\/www.yumefx.com\/wp-content\/uploads\/2022\/01\/ShadowMap_15.png 695w, https:\/\/www.yumefx.com\/wp-content\/uploads\/2022\/01\/ShadowMap_15-300x177.png 300w\" sizes=\"(max-width: 695px) 100vw, 695px\" \/><\/p>\n<p>\u8fd9\u662f\u56e0\u4e3a\u8ba1\u7b97\u9634\u5f71\u65f6\u8981\u4e48\u5728\u9634\u5f71\u4e2d\uff0c\u8981\u4e48\u4e0d\u5728\u9634\u5f71\u4e2d\uff0c\u53ea\u80fd\u51fa\u73b0\u975e\u9ed1\u5373\u767d\u7684\u6548\u679c\uff0c\u56e0\u6b64\u8fb9\u7f18\u5fc5\u5b9a\u51fa\u73b0\u952f\u9f7f\uff0c\u53ea\u662f\u952f\u9f7f\u7a0b\u5ea6\u5927\u5c0f\u7684\u533a\u522b\u3002<\/p>\n<p data-pid=\"9d7IpKQ6\">\u4e3a\u4e86\u6d88\u9664\u8fd9\u79cd\u8d70\u6837\u95ee\u9898\uff0c\u4e8e\u662f\u51fa\u73b0\u4e86PCF\u6ee4\u6ce2\uff08percentage closer filtering\uff09\u6280\u672f\uff0c\u901a\u8fc7\u6ee4\u6ce2\u5668\u7684\u65b9\u5f0f\uff0c\u5728\u7b2c\u4e8c\u6b65\u7740\u8272\u70b9\u901a\u8fc7\u6df1\u5ea6\u6d4b\u8bd5\u65f6\uff0c\u53d6\u8be5\u50cf\u7d20\u5468\u56f4\u6307\u5b9a\u8303\u56f4\u5185\u7684\u533a\u57df\u8fdb\u884c\u91c7\u6837\uff08\u4f8b\u5982\u5468\u56f43*3\u6216\u80057*7\u4e2a\u91c7\u6837\u70b9\u7b49\uff09\uff0c\u5c06\u5f97\u5230\u7684\u7ed3\u679c\u8fdb\u884c\u52a0\u6743\u5e73\u5747\u3002<\/p>\n<p data-pid=\"9d7IpKQ6\"><img loading=\"lazy\" class=\"size-full wp-image-4486 aligncenter\" src=\"https:\/\/www.yumefx.com\/wp-content\/uploads\/2022\/01\/ShadowMap_18-1.png\" alt=\"\" width=\"787\" height=\"333\" srcset=\"https:\/\/www.yumefx.com\/wp-content\/uploads\/2022\/01\/ShadowMap_18-1.png 787w, https:\/\/www.yumefx.com\/wp-content\/uploads\/2022\/01\/ShadowMap_18-1-300x127.png 300w, https:\/\/www.yumefx.com\/wp-content\/uploads\/2022\/01\/ShadowMap_18-1-768x325.png 768w\" sizes=\"(max-width: 787px) 100vw, 787px\" \/><\/p>\n<p data-pid=\"9d7IpKQ6\">\u8fd9\u6837\u7684\u8bdd\uff0c\u6700\u7ec8\u5f97\u5230\u7684\u7ed3\u679c\u662f\u4e00\u4e2a[0, 1]\u8303\u56f4\u7684\u503c\uff0c\u4e8e\u662f\u5c31\u5f62\u6210\u4e86\u9634\u5f71\u8fb9\u7f18\u7684\u534a\u900f\u660e\u8fc7\u6e21\uff0c\u80fd\u591f\u51cf\u5c11\u952f\u9f7f\u95ee\u9898\u3002<\/p>\n<p data-pid=\"dXeTOlTL\">Shadow Mapping\u6280\u672f\u751f\u6210\u7684\u9634\u5f71\u5c5e\u4e8e\u786c\u9634\u5f71\uff0c\u7406\u8bba\u4e0a\u53ea\u9002\u7528\u4e8e\u6ca1\u6709\u4f53\u79ef\u7684\u70b9\u5149\u6e90\u3002<\/p>\n<p data-pid=\"l52yfLpj\">\u8f6f\u786c\u9634\u5f71\u533a\u522b\u793a\u610f\u5982\u4e0b\uff0c\u4e0a\u65b9\u68f1\u89d2\u5206\u660e\u4e3a\u786c\u9634\u5f71\uff0c\u4e0b\u65b9\u4e3a\u8f6f\u9634\u5f71\uff1a<\/p>\n<p data-pid=\"Lj9ddqXt\"><img loading=\"lazy\" class=\"size-full wp-image-4402 alignnone\" src=\"https:\/\/www.yumefx.com\/wp-content\/uploads\/2022\/01\/ShadowMap_05.png\" alt=\"\" width=\"950\" height=\"505\" srcset=\"https:\/\/www.yumefx.com\/wp-content\/uploads\/2022\/01\/ShadowMap_05.png 950w, https:\/\/www.yumefx.com\/wp-content\/uploads\/2022\/01\/ShadowMap_05-300x159.png 300w, https:\/\/www.yumefx.com\/wp-content\/uploads\/2022\/01\/ShadowMap_05-768x408.png 768w\" sizes=\"(max-width: 950px) 100vw, 950px\" \/><\/p>\n<p>\u4ea7\u751f\u8fd9\u79cd\u95ee\u9898\u7684\u539f\u56e0\u662f\u56e0\u4e3a\u5149\u6e90\u5177\u6709\u4f53\u79ef\uff0c\u5bfc\u81f4\u6709\u7684\u5730\u65b9\u5b8c\u5168\u770b\u4e0d\u5230\u5149\u6e90(\u672c\u5f71, Umbra), 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shadows\uff09\u3002<\/p>\n<p>\u00a0<\/p>\n<p>\u672c\u6587\u53c2\u8003\u81ea\u672c\u6587\u53c2\u8003\u81ea\u95eb\u4ee4\u742a\u8001\u5e08\u7684\u300a<a href=\"https:\/\/www.bilibili.com\/video\/BV1X7411F744?p=2\"><span class=\"tit\">GAMES101-\u73b0\u4ee3\u8ba1\u7b97\u673a\u56fe\u5f62\u5b66\u5165\u95e8<\/span><\/a>\u300b\u548c\u5b59\u6653\u78ca\u7684<a href=\"https:\/\/www.zhihu.com\/column\/c_1249465121615204352\">\u8ba1\u7b97\u673a\u56fe\u5f62\u5b66\u7cfb\u5217\u7b14\u8bb0<\/a>\u4ee5\u53ca\u6653\u75d5\u7684\u300a<a href=\"https:\/\/www.yuque.com\/xiaohen-ecwjj\/vegbg9\/ghapty#Ybb1l\">\u767e\u4eba\u8ba1\u5212\u4f5c\u4e1a<\/a>\u300b\u7b49\uff0c\u611f\u8c22\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator\"\/>\n\n\n\n<p>\u4eba\u662f\u5351\u9119\u7684\u4e1c\u897f\uff0c<br \/>\u4ec0\u4e48\u90fd\u4f1a\u4e60\u60ef\u7684\u3002<\/p>\n<p style=\"text-align: right;\">\u300a\u7f6a\u4e0e\u7f5a\u300b<br \/>\u2014\u2014\u9640\u601d\u59a5\u8036\u592b\u65af\u57fa<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u524d\u8a00 \u524d\u9762\u51e0\u7bc7\u5173\u4e8e\u5149\u6805\u5316\u7684\u6587\u7ae0\u4e2d\u4ecb\u7ecd\u4e86\u5982\u4f55\u8ba1\u7b97\u7269\u4f53\u8868\u9762\u7684\u5149\u7167\uff0c\u4f46\u5e76\u672a\u63d0\u53ca\u9634\u5f71\u7684\u8ba1\u7b97\uff0c\u9634\u5f71\u9700\u8981\u5355\u72ec\u8fdb\u884c\u5904\u7406\uff0c\u76ee\u524d [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":4396,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[4,84],"tags":[86,14,83],"_links":{"self":[{"href":"https:\/\/www.yumefx.com\/index.php?rest_route=\/wp\/v2\/posts\/4394"}],"collection":[{"href":"https:\/\/www.yumefx.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.yumefx.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.yumefx.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.yumefx.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=4394"}],"version-history":[{"count":0,"href":"https:\/\/www.yumefx.com\/index.php?rest_route=\/wp\/v2\/posts\/4394\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.yumefx.com\/index.php?rest_route=\/wp\/v2\/media\/4396"}],"wp:attachment":[{"href":"https:\/\/www.yumefx.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=4394"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.yumefx.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=4394"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.yumefx.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=4394"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}