{"id":3178,"date":"2023-08-06T22:27:48","date_gmt":"2023-08-06T14:27:48","guid":{"rendered":"https:\/\/www.caiqinyi.cn\/?p=3178"},"modified":"2025-02-26T10:59:20","modified_gmt":"2025-02-26T02:59:20","slug":"troubleshoot_problem_ue5_distance_field_update_causes_lag","status":"publish","type":"post","link":"https:\/\/www.caiqinyi.cn\/index.php\/2023\/08\/06\/troubleshoot_problem_ue5_distance_field_update_causes_lag\/","title":{"rendered":"UE5 Distance Field\u66f4\u65b0\u5bfc\u81f4\u5361\u987f\u7684\u95ee\u9898\u6392\u67e5"},"content":{"rendered":"<p><script type=\"text\/javascript\" async src=\"https:\/\/www.caiqinyi.cn\/wp-content\/MathJax\/MathJax.js?config=TeX-AMS_CHTML\">\n<\/script><br \/>\n<script type=\"text\/x-mathjax-config\">\n    MathJax.Hub.Config({\n        tex2jax: {inlineMath: [['$','$']]},\n        TeX: {equationNumbers: {autoNumber: [\"AMS\"], useLabelIds: true}},\n        \"HTML-CSS\": {linebreaks: {automatic: true}},\n        SVG: {linebreaks: {automatic: true}}\n    });\n<\/script><\/p>\n<p>\u6700\u8fd1\u5728\u6392\u67e5UE5 Distance Field\u66f4\u65b0\u5bfc\u81f4\u5361\u987f\u7684\u95ee\u9898, \u6539\u8fdb\u4e86\u4e00\u5c0f\u90e8\u5206, \u5927\u81f4\u603b\u7ed3\u4e00\u4e0b~<\/p>\n<p><!--more--><\/p>\n<p><strong>\u53c2\u8003\u6750\u6599<\/strong><br \/>\n1. <a href=\"https:\/\/highfence.tistory.com\/59\">[UE5]\u7a00\u758f\u8ddd\u79bb\u573a &#8211; 2.\u8ddd\u79bb\u573a\u7684\u6d41\u5316<\/a><\/p>\n<p>\u5361\u987f\u7684\u539f\u56e0\u4e3b\u8981\u662f, Distance Field\u7684\u66f4\u65b0\u9891\u7387\u8f83\u9ad8, \u53ea\u8981\u6709\u67d0\u4e2aObject\u7684Distance Field\u7684Mid\u7b49\u7ea7\u53d1\u751f\u6539\u53d8, \u5c31\u4f1a\u89e6\u53d1Distance Field\u7684\u66f4\u65b0. \u6b64\u65f6, \u4f1a\u5728FDistanceFieldSceneData::UpdateDistanceFieldAtlas\u4e2d\u6267\u884c\u4e0b\u8ff0\u901a\u8fc7DX12\u521b\u5efa\u65b0\u7684\u663e\u5b58\u6c60\u7684\u903b\u8f91, \u8fd9\u4e00\u6b65\u662f\u6781\u4e3a\u8017\u65f6\u7684. \u79c1\u4ee5\u4e3a, \u8fd9\u4e2a\u76f4\u63a5\u521b\u5efa\u65b0\u7684\u663e\u5b58\u6c60\u7684\u903b\u8f91\u662f\u6781\u4e3a\u7c97\u66b4\u7684, \u6216\u8bb8\u6709\u6539\u8fdb\u7684\u7a7a\u95f4.<\/p>\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"C++\" data-enlighter-theme=\"monokai\">\r\n\r\nif (NumBrickUploads > 0)\r\n{\r\n    \/\/ Allocate staging buffer space for the brick atlas compute scatter\r\n    AtlasUpload.AllocateAndLock(GraphBuilder.RHICmdList, NumBrickUploads, DistanceField::BrickSize);\r\n    UpdateParameters.BrickUploadDataPtr = AtlasUpload.BrickUploadDataPtr;\r\n    UpdateParameters.BrickUploadCoordinatesPtr = AtlasUpload.BrickUploadCoordinatesPtr;\r\n}\r\n\r\n<\/pre>\n<p>\u81ea\u5df1\u5e76\u6ca1\u6709\u5bf9\u4e0a\u8ff0\u903b\u8f91\u4f5c\u51fa\u6709\u6548\u7684\u4fee\u590d, \u53ea\u662f\u5bf9\u53c2\u4e0eDistance Field\u7684\u66f4\u65b0\u7684Objects\u4f5c\u51fa\u66f4\u7ec6\u7c92\u5ea6\u7684Culling, \u5373\u7981\u6b62Bounding Box Size\u5c0f\u4e8e\u9608\u503c\u7684Object\u53c2\u4e0eDistance Field\u7684\u66f4\u65b0.<\/p>\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"C++\" data-enlighter-theme=\"monokai\">\r\n\r\nfloat GMeshDistanceFieldsMinObjectBoundingRadius = 30.0f;\r\nFAutoConsoleVariableRef CVarMeshDistanceFieldsMinObjectBoundingRadius(\r\n\tTEXT(\"r.DistanceFields.MinObjectBoundingRadius\"),\r\n\tGMeshDistanceFieldsMinObjectBoundingRadius,\r\n\tTEXT(\"Objects smaller than this will not be included in the Mesh Distance Field scene, to improve performance.\"),\r\n\tECVF_RenderThreadSafe\r\n);\r\n\r\n<\/pre>\n","protected":false},"excerpt":{"rendered":"<p>\u6700\u8fd1\u5728\u6392\u67e5UE5 Distance Field\u66f4\u65b0\u5bfc\u81f4\u5361\u987f\u7684\u95ee\u9898, \u6539\u8fdb\u4e86\u4e00\u5c0f\u90e8\u5206, \u5927\u81f4\u603b\u7ed3\u4e00\u4e0b~<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[10,9],"tags":[],"_links":{"self":[{"href":"https:\/\/www.caiqinyi.cn\/index.php\/wp-json\/wp\/v2\/posts\/3178"}],"collection":[{"href":"https:\/\/www.caiqinyi.cn\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.caiqinyi.cn\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.caiqinyi.cn\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.caiqinyi.cn\/index.php\/wp-json\/wp\/v2\/comments?post=3178"}],"version-history":[{"count":4,"href":"https:\/\/www.caiqinyi.cn\/index.php\/wp-json\/wp\/v2\/posts\/3178\/revisions"}],"predecessor-version":[{"id":3601,"href":"https:\/\/www.caiqinyi.cn\/index.php\/wp-json\/wp\/v2\/posts\/3178\/revisions\/3601"}],"wp:attachment":[{"href":"https:\/\/www.caiqinyi.cn\/index.php\/wp-json\/wp\/v2\/media?parent=3178"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.caiqinyi.cn\/index.php\/wp-json\/wp\/v2\/categories?post=3178"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.caiqinyi.cn\/index.php\/wp-json\/wp\/v2\/tags?post=3178"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}