{"id":470,"date":"2022-02-04T13:41:08","date_gmt":"2022-02-04T13:41:08","guid":{"rendered":"https:\/\/3dstudio.co\/?p=470"},"modified":"2026-03-23T05:35:25","modified_gmt":"2026-03-23T05:35:25","slug":"3d-lod-level-of-detail","status":"publish","type":"post","link":"https:\/\/3dstudio.co\/vi\/3d-modeling\/3d-lod-level-of-detail\/","title":{"rendered":"LOD l\u00e0 g\u00ec: M\u1ee9c \u0111\u1ed9 chi ti\u1ebft"},"content":{"rendered":"<h2 class=\"wp-block-heading\" id=\"introduction\">Gi\u1edbi thi\u1ec7u<\/h2>\n\n\n\n<p>Tr\u00f2 ch\u01a1i hi\u1ec7n \u0111\u1ea1i \u0111\u00e3 \u0111\u1ea1t \u0111\u01b0\u1ee3c nh\u1eefng \u0111\u1ec9nh cao trong vi\u1ec7c cung c\u1ea5p m\u00f4i tr\u01b0\u1eddng th\u1ef1c t\u1ebf ngo\u1ea1n m\u1ee5c v\u1edbi nhi\u1ec1u \u0111\u1ed1i t\u01b0\u1ee3ng v\u00e0 nh\u00e2n v\u1eadt. M\u1eb7c d\u00f9 t\u1ea5t c\u1ea3 ch\u00fang \u0111\u1ec1u ho\u1ea1t \u0111\u1ed9ng \u1edf c\u00e1c kho\u1ea3ng c\u00e1ch kh\u00e1c nhau \u0111\u1ed1i v\u1edbi \u0111i\u1ec3m quan s\u00e1t, nh\u01b0ng m\u1ed9t s\u1ed1 \u00edt th\u1ef1c s\u1ef1 th\u00eam th\u1ee9 g\u00ec \u0111\u00f3 v\u00e0o c\u1ea3nh.&nbsp;<\/p>\n\n\n\n<p>Tuy nhi\u00ean, m\u1ed9t c\u00f4ng c\u1ee5 ph\u1ea3i x\u1eed l\u00fd v\u00e0 hi\u1ec3n th\u1ecb t\u1ea5t c\u1ea3 c\u00e1c \u0111\u1ed1i t\u01b0\u1ee3ng. \u0110\u00f3 ch\u00ednh x\u00e1c l\u00e0 th\u1eddi \u0111i\u1ec3m LOD ph\u00e1t huy t\u00e1c d\u1ee5ng \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o k\u1ebft xu\u1ea5t nhanh ch\u00f3ng. Nh\u01b0ng kh\u00f4ng ph\u1ea3i v\u1eady \u0111\u00e2u.<\/p>\n\n\n\n<p>H\u00f4m nay b\u1ea1n s\u1ebd t\u00ecm hi\u1ec3u m\u1ecdi th\u1ee9 b\u1ea1n c\u1ea7n bi\u1ebft v\u1ec1 LOD l\u00e0 g\u00ec v\u00e0 t\u1ea1i sao b\u1ea1n c\u1ea7n n\u00f3 trong tr\u00f2 ch\u01a1i v\u00e0 <a href=\"https:\/\/3dstudio.co\/vi\/3d-character-modeling\/\">m\u00f4 h\u00ecnh nh\u00e2n v\u1eadt<\/a>.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"what-is-lod\">LOD l\u00e0 g\u00ec?<\/h2>\n\n\n\n<p>LOD ho\u1eb7c<strong> M\u1ee9c \u0111\u1ed9 chi ti\u1ebft <\/strong>l\u00e0 ph\u01b0\u01a1ng ph\u00e1p gi\u1ea3m s\u1ed1 l\u01b0\u1ee3ng polygon trong \u0111\u1ed1i t\u01b0\u1ee3ng 3D d\u1ef1a tr\u00ean kho\u1ea3ng c\u00e1ch c\u1ee7a ch\u00fang \u0111\u1ebfn ng\u01b0\u1eddi xem ho\u1eb7c m\u00e1y \u1ea3nh. C\u00e1c nh\u00e0 l\u1eadp m\u00f4 h\u00ecnh s\u1eed d\u1ee5ng n\u00f3 \u0111\u1ec3 gi\u1ea3m kh\u1ed1i l\u01b0\u1ee3ng c\u00f4ng vi\u1ec7c tr\u00ean CPU ho\u1eb7c card \u0111\u1ed3 h\u1ecda v\u00e0 t\u0103ng hi\u1ec7u qu\u1ea3 hi\u1ec3n th\u1ecb.&nbsp;<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img fetchpriority=\"high\" decoding=\"async\" width=\"1000\" height=\"558\" src=\"https:\/\/3dstudio.co\/wp-content\/uploads\/2022\/02\/how-to-edit-level-of-detail.jpg\" alt=\"c\u00e1ch ch\u1ec9nh s\u1eeda m\u1ee9c \u0111\u1ed9 chi ti\u1ebft\" class=\"wp-image-643\" srcset=\"https:\/\/3dstudio.co\/wp-content\/uploads\/2022\/02\/how-to-edit-level-of-detail.jpg 1000w, https:\/\/3dstudio.co\/wp-content\/uploads\/2022\/02\/how-to-edit-level-of-detail-300x167.jpg 300w, https:\/\/3dstudio.co\/wp-content\/uploads\/2022\/02\/how-to-edit-level-of-detail-768x429.jpg 768w, https:\/\/3dstudio.co\/wp-content\/uploads\/2022\/02\/how-to-edit-level-of-detail-18x10.jpg 18w\" sizes=\"(max-width: 1000px) 100vw, 1000px\" \/><figcaption>M\u1ee9c \u0111\u1ed9 chi ti\u1ebft c\u1ee7a c\u00e1c \u0111\u1ed1i t\u01b0\u1ee3ng trong m\u1ed1i quan h\u1ec7<\/figcaption><\/figure>\n\n\n\n<p>T\u01b0\u01a1ng \u1ee9ng, <strong>c\u00f3 nhi\u1ec1u c\u1ea5p \u0111\u1ed9 nh\u00f3m chi ti\u1ebft kh\u00e1c nhau<\/strong> \u0111\u01b0\u1ee3c t\u1ea1o ra cho m\u1ed7i ph\u1ea7n c\u1ee7a khung c\u1ea3nh tr\u00f2 ch\u01a1i. M\u1ed7i ng\u01b0\u1eddi trong s\u1ed1 h\u1ecd c\u00f3 s\u1ed1 l\u01b0\u1ee3ng polygon kh\u00e1c nhau v\u00e0 thu\u1ed9c v\u1ec1 m\u1ed9t nh\u00f3m, trong \u0111\u00f3 nh\u00f3m LOD0 l\u00e0 m\u00f4 h\u00ecnh \u0111\u1ea7y \u0111\u1ee7 chi ti\u1ebft v\u00e0 LOD1, LOD2 \u4e00 c\u00f3 m\u1ee9c \u0111\u1ed9 chi ti\u1ebft th\u1ea5p h\u01a1n, v.v.&nbsp;<\/p>\n\n\n\n<p>N\u00f3 c\u00f3 th\u1ec3 c\u00f3 t\u1eeb v\u00e0i ngh\u00ecn h\u00ecnh tam gi\u00e1c trong m\u1ed9t <a href=\"http:\/\/3dstudio.co\/vi\/polygon-mesh\/\">l\u01b0\u1edbi \u0111a gi\u00e1c<\/a> tr\u00ean \u0111\u1ed1i t\u01b0\u1ee3ng chi ti\u1ebft nh\u1ea5t v\u00e0 ch\u1ec9 m\u1ed9t tr\u0103m tr\u00ean phi\u00ean b\u1ea3n \u00edt chi ti\u1ebft nh\u1ea5t c\u1ee7a m\u00f4 h\u00ecnh.&nbsp;<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" width=\"1000\" height=\"430\" src=\"https:\/\/3dstudio.co\/wp-content\/uploads\/2022\/02\/different-level-of-detail.jpg\" alt=\"m\u1ee9c \u0111\u1ed9 chi ti\u1ebft kh\u00e1c nhau\" class=\"wp-image-644\" srcset=\"https:\/\/3dstudio.co\/wp-content\/uploads\/2022\/02\/different-level-of-detail.jpg 1000w, https:\/\/3dstudio.co\/wp-content\/uploads\/2022\/02\/different-level-of-detail-300x129.jpg 300w, https:\/\/3dstudio.co\/wp-content\/uploads\/2022\/02\/different-level-of-detail-768x330.jpg 768w, https:\/\/3dstudio.co\/wp-content\/uploads\/2022\/02\/different-level-of-detail-18x8.jpg 18w\" sizes=\"(max-width: 1000px) 100vw, 1000px\" \/><figcaption>S\u1ed1 l\u01b0\u1ee3ng kh\u00e1c nhau c\u1ee7a polygon trong LOD meshes (ngu\u1ed3n <a href=\"https:\/\/www.youtube.com\/watch?v=mIkIMgEVnX0\" target=\"_blank\" rel=\"noreferrer noopener nofollow\">YouTube<\/a>)<\/figcaption><\/figure>\n\n\n\n<p>N\u1ebfu b\u1ea1n \u0111ang t\u1ef1 h\u1ecfi li\u1ec7u n\u00f3 c\u00f3 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn tr\u1ea3i nghi\u1ec7m c\u1ee7a ng\u01b0\u1eddi ch\u01a1i hay kh\u00f4ng \u4e00 <strong>C\u00e2u tr\u1ea3 l\u1eddi l\u00e0 c\u00f3 ho\u1eb7c kh\u00f4ng<\/strong>.&nbsp;<\/p>\n\n\n\n<p>Ch\u1ea5t l\u01b0\u1ee3ng h\u00ecnh \u1ea3nh gi\u1ea3m c\u1ee7a m\u00f4 h\u00ecnh hi\u1ebfm khi \u0111\u01b0\u1ee3c ch\u00fa \u00fd \u0111\u1ebfn v\u00ec c\u00e1c v\u1eadt th\u1ec3 \u1edf xa ho\u1eb7c chuy\u1ec3n \u0111\u1ed9ng nhanh. Tuy nhi\u00ean, th\u1eddi gian hi\u1ec3n th\u1ecb \u0111\u01b0\u1ee3c c\u1ea3i thi\u1ec7n \u0111\u00e1ng k\u1ec3, \u0111i\u1ec1u n\u00e0y kh\u00f4ng g\u00e2y ch\u00fa \u00fd.<\/p>\n\n\n\n<p>M\u1eb7c d\u00f9 n\u00f3 c\u00f3 v\u1ebb gi\u1ed1ng nh\u01b0 m\u1ed9t gi\u1ea3i ph\u00e1p ph\u00f9 h\u1ee3p v\u1edbi t\u1ea5t c\u1ea3, nh\u01b0ng b\u1ea1n v\u1eabn kh\u00f4ng th\u1ec3 \u00e1p d\u1ee5ng n\u00f3 cho t\u1ea5t c\u1ea3 c\u00e1c tr\u00f2 ch\u01a1i.&nbsp;<\/p>\n\n\n\n<p class=\"note\"><strong>Ghi ch\u00fa: <\/strong>kh\u00f4ng s\u1eed d\u1ee5ng LOD tr\u00ean c\u00e1c \u0111\u1ed1i t\u01b0\u1ee3ng r\u1ea5t \u0111\u01a1n gi\u1ea3n c\u00f3 nhi\u1ec1u h\u00ecnh tam gi\u00e1c ho\u1eb7c tr\u00f2 ch\u01a1i c\u00f3 ch\u1ebf \u0111\u1ed9 xem camera t\u0129nh. Trong nh\u1eefng tr\u01b0\u1eddng h\u1ee3p n\u00e0y, t\u1ed1i \u01b0u h\u00f3a mesh \u0111\u01b0\u1ee3c x\u1eed l\u00fd theo c\u00e1ch kh\u00e1c.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"lod-parameters\">Tham s\u1ed1 LOD<\/h2>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" width=\"1000\" height=\"625\" src=\"https:\/\/3dstudio.co\/wp-content\/uploads\/2022\/02\/lod-parameters-level-of-detail.jpg\" alt=\"th\u00f4ng s\u1ed1 lod m\u1ee9c \u0111\u1ed9 chi ti\u1ebft\" class=\"wp-image-773\" srcset=\"https:\/\/3dstudio.co\/wp-content\/uploads\/2022\/02\/lod-parameters-level-of-detail.jpg 1000w, https:\/\/3dstudio.co\/wp-content\/uploads\/2022\/02\/lod-parameters-level-of-detail-300x188.jpg 300w, https:\/\/3dstudio.co\/wp-content\/uploads\/2022\/02\/lod-parameters-level-of-detail-768x480.jpg 768w, https:\/\/3dstudio.co\/wp-content\/uploads\/2022\/02\/lod-parameters-level-of-detail-18x12.jpg 18w\" sizes=\"(max-width: 1000px) 100vw, 1000px\" \/><\/figure>\n\n\n\n<p>C\u00e1c \u0111\u1ed1i t\u01b0\u1ee3ng kh\u00e1c nhau n\u1eb1m \u1edf nh\u1eefng kho\u1ea3ng c\u00e1ch kh\u00e1c nhau \u0111\u1ed1i v\u1edbi ng\u01b0\u1eddi xem trong su\u1ed1t tr\u00f2 ch\u01a1i. V\u00ec v\u1eady, ch\u1ec9 kho\u1ea3ng c\u00e1ch kh\u00f4ng ph\u1ea3i l\u00e0 y\u1ebfu t\u1ed1 h\u1ee3p l\u1ec7 \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh m\u1ee9c \u0111\u1ed9 chi ti\u1ebft cho t\u1eebng \u0111\u1ed1i t\u01b0\u1ee3ng, nh\u00e2n v\u1eadt v\u00e0 c\u1ea3nh v\u1eadt.&nbsp;<\/p>\n\n\n\n<p>C\u00f3 m\u1ed9t s\u1ed1 ch\u1ec9 s\u1ed1 kh\u00e1c c\u0169ng c\u1ea7n xem x\u00e9t:<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li><strong>T\u00ednh n\u0103ng \u0111\u1ed1i t\u01b0\u1ee3ng<\/strong> \u30fc c\u00e1c \u0111\u1ed1i t\u01b0\u1ee3ng trong th\u1ebf gi\u1edbi th\u1ef1c v\u00e0 c\u00e1c y\u1ebfu t\u1ed1 c\u1ee7a ch\u00fang m\u00e0 b\u1ea1n ph\u1ea3i \u0111\u01b0a v\u00e0o<\/li><li><strong>S\u1ef1 ph\u1ee9c t\u1ea1p c\u1ee7a c\u00e1c t\u00ednh n\u0103ng<\/strong> \u30fc k\u00edch th\u01b0\u1edbc t\u1ed1i thi\u1ec3u c\u1ee7a c\u00e1c \u0111\u1ed1i t\u01b0\u1ee3ng \u0111\u1ecba l\u00fd trong th\u1ebf gi\u1edbi th\u1ef1c v\u00e0 \u0111\u1ed9 ph\u1ee9c t\u1ea1p c\u1ee7a h\u00ecnh h\u1ecdc c\u1ee7a ch\u00fang<\/li><li><strong>Ng\u1eef ngh\u0129a h\u1ecdc <\/strong>\u30fc m\u1ea1ch l\u1ea1c kh\u00f4ng gian-ng\u1eef ngh\u0129a<\/li><li><strong>K\u00edch th\u01b0\u1edbc <\/strong>\u30fc k\u00edch th\u01b0\u1edbc h\u00ecnh h\u1ecdc c\u1ee7a m\u1ed7i \u0111\u1ed1i t\u01b0\u1ee3ng \u0111\u1ecba l\u00fd<\/li><li><strong>K\u1ebft c\u1ea5u <\/strong>\u30fc m\u1ee9c ch\u1ea5t l\u01b0\u1ee3ng c\u1ea7n thi\u1ebft cho t\u1eebng t\u00ednh n\u0103ng n\u1ebfu b\u1ea1n c\u1ea7n t\u1ea1o h\u1ecda ti\u1ebft cho m\u1ed9t \u0111\u1ed1i t\u01b0\u1ee3ng<\/li><\/ul>\n\n\n\n<p>Khi b\u1ea1n x\u00e1c \u0111\u1ecbnh nh\u1eefng \u0111i\u1ec1u n\u00e0y, b\u1ea1n c\u1ea7n ch\u1ecdn k\u1ef9 thu\u1eadt s\u1eed d\u1ee5ng \u0111\u1ec3 t\u1ea1o LOD cho \u0111\u1ed1i t\u01b0\u1ee3ng c\u1ee7a m\u00ecnh.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"level-of-detail-management-techniques\">M\u1ee9c \u0111\u1ed9 c\u1ee7a c\u00e1c k\u1ef9 thu\u1eadt qu\u1ea3n l\u00fd chi ti\u1ebft<\/h2>\n\n\n\n<p>LOD gi\u00fap<strong> <\/strong>cung c\u1ea5p \u0111\u1ea7y \u0111\u1ee7 <strong>ch\u1ea5t l\u01b0\u1ee3ng h\u00ecnh \u1ea3nh trong khi tr\u00e1nh t\u00ednh to\u00e1n kh\u00f4ng c\u1ea7n thi\u1ebft <\/strong>v\u1edbi s\u1ef1 tr\u1ee3 gi\u00fap c\u1ee7a thu\u1eadt to\u00e1n. Tuy nhi\u00ean, c\u00e1c ph\u01b0\u01a1ng ph\u00e1p ti\u1ebfp c\u1eadn hi\u1ec7n \u0111\u1ea1i \u0111\u01b0\u1ee3c \u0111i\u1ec1u ch\u1ec9nh cho ph\u00f9 h\u1ee3p v\u1edbi th\u00f4ng tin \u0111\u01b0\u1ee3c k\u1ebft xu\u1ea5t kh\u00e1c xa v\u1edbi nh\u1eefng g\u00ec thu\u1eadt to\u00e1n ban \u0111\u1ea7u th\u01b0\u1eddng l\u00e0m.&nbsp;<\/p>\n\n\n\n<p>D\u1ef1a tr\u00ean t\u00ecnh h\u00ecnh c\u00f3 2 ph\u01b0\u01a1ng ph\u00e1p ch\u00ednh.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"discrete-levels-of-detail-dlod\">M\u1ee9c \u0111\u1ed9 chi ti\u1ebft r\u1eddi r\u1ea1c (DLOD)<\/h3>\n\n\n\n<p>S\u1eed d\u1ee5ng ph\u01b0\u01a1ng ph\u00e1p r\u1eddi r\u1ea1c, b\u1ea1n t\u1ea1o <strong>nhi\u1ec1u phi\u00ean b\u1ea3n r\u1eddi r\u1ea1c ho\u1eb7c ri\u00eang bi\u1ec7t<\/strong> c\u1ee7a \u0111\u1ed1i t\u01b0\u1ee3ng v\u1edbi m\u1ed9t m\u1ee9c \u0111\u1ed9 chi ti\u1ebft kh\u00e1c. \u0110\u1ec3 c\u00f3 \u0111\u01b0\u1ee3c t\u1ea5t c\u1ea3 ch\u00fang, b\u1ea1n c\u1ea7n m\u1ed9t thu\u1eadt to\u00e1n b\u00ean ngo\u00e0i \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong c\u00e1c k\u1ef9 thu\u1eadt gi\u1ea3m polygon kh\u00e1c nhau.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"1000\" height=\"1000\" src=\"https:\/\/3dstudio.co\/wp-content\/uploads\/2022\/02\/discrete-levels-of-detail-dlod-lod-groups.jpg\" alt=\"m\u1ee9c \u0111\u1ed9 r\u1eddi r\u1ea1c c\u1ee7a c\u00e1c nh\u00f3m lod dlod chi ti\u1ebft\" class=\"wp-image-766\" srcset=\"https:\/\/3dstudio.co\/wp-content\/uploads\/2022\/02\/discrete-levels-of-detail-dlod-lod-groups.jpg 1000w, https:\/\/3dstudio.co\/wp-content\/uploads\/2022\/02\/discrete-levels-of-detail-dlod-lod-groups-300x300.jpg 300w, https:\/\/3dstudio.co\/wp-content\/uploads\/2022\/02\/discrete-levels-of-detail-dlod-lod-groups-150x150.jpg 150w, https:\/\/3dstudio.co\/wp-content\/uploads\/2022\/02\/discrete-levels-of-detail-dlod-lod-groups-768x768.jpg 768w, https:\/\/3dstudio.co\/wp-content\/uploads\/2022\/02\/discrete-levels-of-detail-dlod-lod-groups-12x12.jpg 12w\" sizes=\"(max-width: 1000px) 100vw, 1000px\" \/><\/figure>\n\n\n\n<p>Trong qu\u00e1 tr\u00ecnh k\u1ebft xu\u1ea5t, nh\u1eefng phi\u00ean b\u1ea3n c\u1ee7a c\u00e1c \u0111\u1ed1i t\u01b0\u1ee3ng c\u00f3 m\u1ee9c \u0111\u1ed9 chi ti\u1ebft cao h\u01a1n s\u1ebd \u0111\u01b0\u1ee3c thay th\u1ebf cho c\u00e1c \u0111\u1ed1i t\u01b0\u1ee3ng c\u00f3 m\u1ee9c \u0111\u1ed9 chi ti\u1ebft th\u1ea5p h\u01a1n v\u00e0 ng\u01b0\u1ee3c l\u1ea1i. N\u00f3 g\u00e2y ra hi\u1ec7n t\u01b0\u1ee3ng xu\u1ea5t hi\u1ec7n tr\u1ef1c quan trong qu\u00e1 tr\u00ecnh chuy\u1ec3n \u0111\u1ed5i m\u00e0 b\u1ea1n n\u00ean l\u00e0m m\u1ecdi l\u00fac.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"continuous-levels-of-detail-clod\">M\u1ee9c \u0111\u1ed9 chi ti\u1ebft li\u00ean t\u1ee5c (CLOD)<\/h3>\n\n\n\n<p>Ph\u01b0\u01a1ng ph\u00e1p chi ti\u1ebft \u1edf m\u1ee9c \u0111\u1ed9 li\u00ean t\u1ee5c l\u00e0 ph\u00f9 h\u1ee3p nh\u1ea5t <strong>cho c\u00e1c \u1ee9ng d\u1ee5ng chuy\u00ean s\u00e2u v\u1ec1 hi\u1ec7u su\u1ea5t v\u00e0 c\u00e1c \u0111\u1ed1i t\u01b0\u1ee3ng chuy\u1ec3n \u0111\u1ed9ng.<\/strong> N\u00f3 cho ph\u00e9p b\u1ea1n thay \u0111\u1ed5i chi ti\u1ebft c\u1ee5c b\u1ed9. Do \u0111\u00f3, b\u1ea1n c\u00f3 th\u1ec3 tr\u00ecnh b\u00e0y m\u1ed9t m\u1eb7t c\u1ee7a \u0111\u1ed1i t\u01b0\u1ee3ng g\u1ea7n v\u1edbi ng\u01b0\u1eddi xem h\u01a1n v\u1edbi nhi\u1ec1u chi ti\u1ebft h\u01a1n v\u00e0 m\u1eb7t kia v\u1edbi m\u1ee9c \u0111\u1ed9 chi ti\u1ebft gi\u1ea3m.&nbsp;<\/p>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"600\" height=\"378\" src=\"https:\/\/3dstudio.co\/wp-content\/uploads\/2022\/02\/continuous-level-of-detail-lod.gif\" alt=\"m\u1ee9c \u0111\u1ed9 chi ti\u1ebft li\u00ean t\u1ee5c\" class=\"wp-image-776\"\/><\/figure><\/div>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"1000\" height=\"534\" src=\"https:\/\/3dstudio.co\/wp-content\/uploads\/2022\/02\/continuous-lod.jpg\" alt=\"li\u00ean t\u1ee5c\" class=\"wp-image-647\" srcset=\"https:\/\/3dstudio.co\/wp-content\/uploads\/2022\/02\/continuous-lod.jpg 1000w, https:\/\/3dstudio.co\/wp-content\/uploads\/2022\/02\/continuous-lod-300x160.jpg 300w, https:\/\/3dstudio.co\/wp-content\/uploads\/2022\/02\/continuous-lod-768x410.jpg 768w, https:\/\/3dstudio.co\/wp-content\/uploads\/2022\/02\/continuous-lod-18x10.jpg 18w\" sizes=\"(max-width: 1000px) 100vw, 1000px\" \/><figcaption>LOD li\u00ean t\u1ee5c<\/figcaption><\/figure>\n\n\n\n<p>C\u00f3 th\u1ec3 do c\u1ea5u tr\u00fac \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong ph\u01b0\u01a1ng ph\u00e1p m\u00e0 ph\u1ed5 c\u1ee7a chi ti\u1ebft li\u00ean t\u1ee5c thay \u0111\u1ed5i. CLOD cho ph\u00e9p b\u1ea1n ch\u1ecdn m\u1ee9c \u0111\u1ed9 chi ti\u1ebft th\u00edch h\u1ee3p cho c\u00e1c t\u00ecnh hu\u1ed1ng nh\u1ea5t \u0111\u1ecbnh. Do c\u00f3 \u00edt ho\u1ea1t \u0111\u1ed9ng li\u00ean quan,<strong> ph\u01b0\u01a1ng ph\u00e1p n\u00e0y cung c\u1ea5p c\u1ea3 CPU th\u1ea5p h\u01a1n v\u00e0 hi\u1ec7u su\u1ea5t nhanh h\u01a1n<\/strong>.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"optimize-the-level-of-lod-for-a-3d-object\">T\u1ed1i \u01b0u h\u00f3a m\u1ee9c LOD cho \u0110\u1ed1i t\u01b0\u1ee3ng 3D<\/h2>\n\n\n\n<p>Khi b\u1ea1n b\u1eaft \u0111\u1ea7u t\u1ea1o polygon meshes, c\u00e2u h\u1ecfi \u0111\u1ea7u ti\u00ean xu\u1ea5t hi\u1ec7n trong \u0111\u1ea7u b\u1ea1n l\u00e0 \u30fc <em>s\u1ed1 LOD h\u1ee3p l\u00fd l\u00e0 bao nhi\u00eau?<\/em><\/p>\n\n\n\n<p>Nghe c\u00f3 v\u1ebb \u0111\u01a1n gi\u1ea3n, nh\u01b0ng \u0111\u00f3 l\u00e0 \u0111i\u1ec1u quan tr\u1ecdng th\u1ee9 hai c\u1ea7n bi\u1ebft sau khi b\u1ea1n t\u00ecm hi\u1ec3u LOD l\u00e0 g\u00ec.&nbsp;<\/p>\n\n\n\n<p>V\u00e0 \u0111\u00e2y l\u00e0 l\u00fd do t\u1ea1i sao.<\/p>\n\n\n\n<p>N\u1ebfu b\u1ea1n ch\u1ec9 gi\u1ea3m m\u1ed9t v\u00e0i \u0111\u1ec9nh trong polygon mesh th\u00ec s\u1ebd kh\u00f4ng c\u00f3 b\u1ea5t k\u1ef3 c\u1ea3i thi\u1ec7n hi\u1ec7u su\u1ea5t \u0111\u00e1ng k\u1ec3 n\u00e0o. T\u1ea5t c\u1ea3 c\u00e1c phi\u00ean b\u1ea3n c\u1ee7a \u0111\u1ed1i t\u01b0\u1ee3ng s\u1ebd \u0111\u01b0\u1ee3c hi\u1ec3n th\u1ecb g\u1ea7n nh\u01b0 gi\u1ed1ng nhau. Sau \u0111\u00f3, n\u1ebfu b\u1ea1n gi\u1ea3m polygons qu\u00e1 nhi\u1ec1u, vi\u1ec7c chuy\u1ec3n \u0111\u1ed5i LOD s\u1ebd qu\u00e1 \u0111\u00e1ng ch\u00fa \u00fd.&nbsp;<\/p>\n\n\n\n<p class=\"tip\"><strong>M\u1eb9o chuy\u00ean nghi\u1ec7p:<\/strong> s\u1eed d\u1ee5ng quy t\u1eafc b\u1ea5t th\u00e0nh v\u0103n l\u00e0 gi\u1ea3m s\u1ed1 l\u01b0\u1ee3ng polygon xu\u1ed1ng 50% cho m\u1ed7i \u0111\u1ed1i t\u01b0\u1ee3ng c\u1ee7a nh\u00f3m (LOD1, LOD2, LOD3, v.v.), nh\u01b0ng v\u1eabn \u0111i\u1ec1u ch\u1ec9nh n\u00f3 cho ph\u00f9 h\u1ee3p v\u1edbi k\u00edch th\u01b0\u1edbc v\u00e0 t\u1ea7m quan tr\u1ecdng c\u1ee7a m\u1ed9t \u0111\u1ed1i t\u01b0\u1ee3ng.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"1000\" height=\"520\" src=\"https:\/\/3dstudio.co\/wp-content\/uploads\/2022\/02\/how-to-create-lod-groups.jpg\" alt=\"c\u00e1ch t\u1ea1o nh\u00f3m lod\" class=\"wp-image-646\" srcset=\"https:\/\/3dstudio.co\/wp-content\/uploads\/2022\/02\/how-to-create-lod-groups.jpg 1000w, https:\/\/3dstudio.co\/wp-content\/uploads\/2022\/02\/how-to-create-lod-groups-300x156.jpg 300w, https:\/\/3dstudio.co\/wp-content\/uploads\/2022\/02\/how-to-create-lod-groups-768x399.jpg 768w, https:\/\/3dstudio.co\/wp-content\/uploads\/2022\/02\/how-to-create-lod-groups-18x9.jpg 18w\" sizes=\"(max-width: 1000px) 100vw, 1000px\" \/><\/figure>\n\n\n\n<p><br>B\u00ean c\u1ea1nh \u0111\u00f3, LOD meshes t\u1ed1n b\u1ed9 nh\u1edb v\u00e0 kh\u1ed1i l\u01b0\u1ee3ng c\u00f4ng vi\u1ec7c c\u1ee7a CPU. V\u00ec v\u1eady, qu\u00e1 nhi\u1ec1u trong s\u1ed1 ch\u00fang s\u1ebd y\u00eau c\u1ea7u x\u1eed l\u00fd nhi\u1ec1u v\u00e0 t\u0103ng k\u00edch th\u01b0\u1edbc t\u1ec7p. Ghi nh\u1edb n\u00f3 trong t\u00e2m tr\u00ed.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"how-to-create-lod-meshes\">C\u00e1ch t\u1ea1o LOD Meshes?<\/h2>\n\n\n\n<p>V\u1edbi t\u1ea5t c\u1ea3 nh\u1eefng \u0111i\u1ec1u \u01b0a th\u00edch <a href=\"http:\/\/3dstudio.co\/vi\/best-3d-modeling-software\/\">Ph\u1ea7n m\u1ec1m m\u00f4 h\u00ecnh 3D<\/a> v\u00e0 c\u00e1c c\u00f4ng c\u1ee5 s\u1eeda \u0111\u1ed5i m\u00e0 ch\u00fang \u0111i k\u00e8m, kh\u00f4ng kh\u00f3 \u0111\u1ec3 b\u1ea1n t\u1ea1o LOD meshes cho c\u00e1c \u0111\u1ed1i t\u01b0\u1ee3ng tr\u00f2 ch\u01a1i c\u1ee7a m\u00ecnh.&nbsp;<\/p>\n\n\n\n<p>Tuy nhi\u00ean, b\u1ea1n c\u00f3 th\u1ec3 l\u00e0m \u0111i\u1ec1u n\u00e0y c\u1ea3 th\u1ee7 c\u00f4ng v\u00e0 t\u1ef1 \u0111\u1ed9ng.&nbsp;<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"manually\">Th\u1ee7 c\u00f4ng&nbsp;<\/h3>\n\n\n\n<p>Khi b\u1ea1n t\u1ea1o m\u1ed9t m\u1ee9c \u0111\u1ed9 chi ti\u1ebft theo c\u00e1ch th\u1ee7 c\u00f4ng, t\u1ea5t c\u1ea3 nh\u1eefng g\u00ec b\u1ea1n c\u1ea7n l\u00e0m ch\u1ec9 l\u00e0 <strong>lo\u1ea1i b\u1ecf m\u1ed9t s\u1ed1 \u0111\u1ec9nh c\u1ee7a m\u1ed9t \u0111\u1ed1i t\u01b0\u1ee3ng 3D<\/strong> v\u00e0 c\u00e1c v\u00f2ng l\u1eb7p c\u1ee7a polygons. B\u1ea1n c\u0169ng c\u00f3 th\u1ec3 t\u1eaft t\u00ednh n\u0103ng m\u01b0\u1ee3t m\u00e0 cho LOD c\u1ee7a m\u00ecnh.<\/p>\n\n\n\n<p>Trong khi b\u1ea1n l\u00e0m \u0111i\u1ec1u n\u00e0y trong ph\u1ea7n m\u1ec1m, n\u00f3 v\u1eabn \u0111\u00f2i h\u1ecfi nhi\u1ec1u th\u1eddi gian. V\u00ec v\u1eady, b\u1ea1n c\u00f3 th\u1ec3 n\u00ean t\u1ef1 \u0111\u1ed9ng h\u00f3a qu\u00e1 tr\u00ecnh n\u00e0y.<\/p>\n\n\n\n<figure class=\"wp-block-embed is-type-video is-provider-youtube wp-block-embed-youtube wp-embed-aspect-16-9 wp-has-aspect-ratio\"><div class=\"wp-block-embed__wrapper\">\n<iframe title=\"T\u00c0I S\u1ea2N TR\u00d2 CH\u01a0I B\u1eaeT \u0110\u1ea6U H\u01af\u1edaNG D\u1eaaN - T\u1ea1o LOD trong Blender &amp; Unity (Ph\u1ea7n 5\/5)\" width=\"800\" height=\"450\" src=\"https:\/\/www.youtube.com\/embed\/v1xBGuxTqfI?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe>\n<\/div><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"automatically\">T\u1ef1 \u0111\u1ed9ng<\/h3>\n\n\n\n<p>Ng\u01b0\u1ee3c l\u1ea1i, v\u1edbi t\u00f9y ch\u1ecdn t\u1ef1 \u0111\u1ed9ng, b\u1ea1n c\u00f3 nhi\u1ec1u l\u1ef1a ch\u1ecdn h\u01a1n. <strong>B\u1ea1n c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng c\u00f4ng c\u1ee5 s\u1eeda \u0111\u1ed5i b\u00ean trong ph\u1ea7n m\u1ec1m 3D<\/strong> ch\u00fang t\u00f4i v\u1eeba \u0111\u1ec1 c\u1eadp. Ph\u1ed5 bi\u1ebfn nh\u1ea5t l\u00e0 <a href=\"https:\/\/knowledge.autodesk.com\/support\/3ds-max\/learn-explore\/caas\/CloudHelp\/cloudhelp\/2021\/ENU\/3DSMax-Modifiers\/files\/GUID-109C880F-181B-4067-91F0-B4EF79639FB3-htm.html\" target=\"_blank\" rel=\"noreferrer noopener nofollow\">ProOptimizer<\/a> cho 3DSMax ho\u1eb7c <a href=\"https:\/\/knowledge.autodesk.com\/support\/maya\/learn-explore\/caas\/CloudHelp\/cloudhelp\/2020\/ENU\/Maya-Basics\/files\/GUID-95F6A84C-7C38-4EEC-84D6-A2E424D3609B-htm.html\" target=\"_blank\" rel=\"noreferrer noopener nofollow\">T\u1ea1o LOD Meshes<\/a> trong Maya.&nbsp;<\/p>\n\n\n\n<p>N\u1ebfu mu\u1ed1n, b\u1ea1n c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng ph\u1ea7n m\u1ec1m t\u1ea1o LOD ri\u00eang bi\u1ec7t nh\u01b0 Simplygon ho\u1eb7c kh\u00e1m ph\u00e1 c\u00e1c t\u00ednh n\u0103ng t\u1ea1o LOD t\u00edch h\u1ee3p m\u00e0 m\u1ed9t s\u1ed1 game engine cung c\u1ea5p (<em>v\u00ed d\u1ee5: Unreal Engine 4<\/em>).&nbsp;<\/p>\n\n\n\n<p>Trong m\u1ecdi tr\u01b0\u1eddng h\u1ee3p, khi b\u1ea1n t\u1ea1o LOD meshes<strong> t\u1ef1 \u0111\u1ed9ng, b\u1ea1n ch\u1ec9 c\u1ea7n ch\u1ec9 \u0111\u1ecbnh c\u00e1c ki\u1ec3u m\u00e1y trong s\u1ed1 LOD v\u00e0 kho\u1ea3ng c\u00e1ch t\u1eeb m\u00e1y \u1ea3nh<\/strong> m\u1ed7i ng\u01b0\u1eddi trong s\u1ed1 h\u1ecd l\u00e0 vi\u1ebft t\u1eaft c\u1ee7a.<\/p>\n\n\n\n<p class=\"note\"><strong>Ghi ch\u00fa:<\/strong> khi l\u00e0m vi\u1ec7c v\u1edbi c\u00e1c c\u00f4ng c\u1ee5 t\u1ef1 \u0111\u1ed9ng, h\u00e3y gi\u1eef c\u00e1c b\u1ea3n sao l\u01b0u c\u00f4ng vi\u1ec7c c\u1ee7a b\u1ea1n v\u00e0 th\u1ef1c hi\u1ec7n ki\u1ec3m tra th\u00edch h\u1ee3p \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o ch\u00fang kh\u00f4ng l\u00e0m h\u1ecfng c\u00e1c tia c\u1ef1c t\u00edm c\u1ee7a m\u00f4 h\u00ecnh c\u1ee7a b\u1ea1n.<\/p>\n\n\n\n<p><br>M\u1ee9c \u0111\u1ed9 chi ti\u1ebft l\u00e0 y\u1ebfu t\u1ed1 b\u1eaft bu\u1ed9c \u0111\u1ed1i v\u1edbi c\u00e1c tr\u00f2 ch\u01a1i cao c\u1ea5p v\u00ec n\u00f3 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn tr\u1ea3i nghi\u1ec7m c\u1ee7a ng\u01b0\u1eddi xem v\u00e0 th\u1eddi gian hi\u1ec3n th\u1ecb c\u1ee7a to\u00e0n b\u1ed9 b\u1ed1i c\u1ea3nh. Ngay khi b\u1ea1n b\u1eaft \u0111\u1ea7u tham gia v\u00e0 h\u1ecdc h\u1ecfi <a href=\"http:\/\/3dstudio.co\/vi\/how-to-3d-model\/\">l\u00e0m th\u1ebf n\u00e0o \u0111\u1ec3 m\u00f4 h\u00ecnh 3D<\/a>, vi\u1ec7c t\u1ea1o LOD d\u01b0\u1eddng nh\u01b0 ch\u1ec9 l\u00e0 m\u1ed9t l\u00e0n gi\u00f3 nh\u1eb9. \u0110\u1eb7c bi\u1ec7t l\u00e0 v\u1edbi t\u1ea5t c\u1ea3 c\u00e1c chi ti\u1ebft b\u1ea1n \u0111\u00e3 h\u1ecdc ng\u00e0y h\u00f4m nay.&nbsp;<\/p>","protected":false},"excerpt":{"rendered":"<p>LOD or a level of detail is the method of reducing the number of polygons in 3D objects based on their distance to the viewer or camera. Modelers use it to reduce the workload on the CPU or the graphics card and increase the efficiency of rendering. <\/p>","protected":false},"author":2,"featured_media":770,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"inline_featured_image":false,"footnotes":""},"categories":[2],"tags":[15,13,14],"class_list":["post-470","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-3d-modeling","tag-3d-artist","tag-3d-modeling","tag-basics"],"_links":{"self":[{"href":"https:\/\/3dstudio.co\/vi\/wp-json\/wp\/v2\/posts\/470","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/3dstudio.co\/vi\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/3dstudio.co\/vi\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/3dstudio.co\/vi\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/3dstudio.co\/vi\/wp-json\/wp\/v2\/comments?post=470"}],"version-history":[{"count":24,"href":"https:\/\/3dstudio.co\/vi\/wp-json\/wp\/v2\/posts\/470\/revisions"}],"predecessor-version":[{"id":1135,"href":"https:\/\/3dstudio.co\/vi\/wp-json\/wp\/v2\/posts\/470\/revisions\/1135"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/3dstudio.co\/vi\/wp-json\/wp\/v2\/media\/770"}],"wp:attachment":[{"href":"https:\/\/3dstudio.co\/vi\/wp-json\/wp\/v2\/media?parent=470"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/3dstudio.co\/vi\/wp-json\/wp\/v2\/categories?post=470"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/3dstudio.co\/vi\/wp-json\/wp\/v2\/tags?post=470"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}