{"id":441561,"date":"2025-05-05T18:20:48","date_gmt":"2025-05-05T10:20:48","guid":{"rendered":"https:\/\/www.idc.net\/help\/?p=441561"},"modified":"2025-05-05T18:20:48","modified_gmt":"2025-05-05T10:20:48","slug":"%e5%9f%ba%e4%ba%8edxgi%e7%9a%84%e9%ab%98%e6%80%a7%e8%83%bdwindows%e5%b1%8f%e5%b9%95%e6%8d%95%e8%8e%b7%e5%ae%9e%e7%8e%b0%e6%96%b9%e6%a1%88%e4%b8%8e%e4%bc%98%e5%8c%96%e6%8c%87%e5%8d%97","status":"publish","type":"post","link":"https:\/\/idc.net\/help\/441561\/","title":{"rendered":"\u57fa\u4e8eDXGI\u7684\u9ad8\u6027\u80fdWindows\u5c4f\u5e55\u6355\u83b7\u5b9e\u73b0\u65b9\u6848\u4e0e\u4f18\u5316\u6307\u5357"},"content":{"rendered":"<p>&nbsp;<\/p>\n<h2>\u5f15\u8a00<\/h2>\n<p>\u968f\u7740\u8fdc\u7a0b\u529e\u516c\u3001\u6e38\u620f\u76f4\u64ad\u3001\u5728\u7ebf\u6559\u80b2\u7b49\u5e94\u7528\u5bf9\u5c4f\u5e55\u6355\u83b7\u6280\u672f\u7684\u6027\u80fd\u8981\u6c42\u6301\u7eed\u63d0\u5347\uff0c\u4f20\u7edfGDI\u65b9\u5f0f\u9010\u6e10\u66b4\u9732\u51fa\u4f4e\u5e27\u7387\u3001\u9ad8\u8d44\u6e90\u5360\u7528\u7b49\u95ee\u9898\u3002\u4e3a\u5e94\u5bf9\u8fd9\u4e9b\u6311\u6218\uff0c\u57fa\u4e8eDXGI\uff08DirectX Graphics Infrastructure\uff09\u7684Desktop Duplication API\u6210\u4e3a\u5f53\u524d\u4e3b\u6d41\u89e3\u51b3\u65b9\u6848\u4e4b\u4e00\u3002\u672c\u6587\u5c06\u6df1\u5165\u89e3\u6790\u57fa\u4e8eDXGI\u7684Windows\u6293\u5c4f\u673a\u5236\uff0c\u63d0\u4f9b\u5b8c\u6574\u5b9e\u73b0\u6d41\u7a0b\u3001\u4f18\u5316\u53c2\u6570\u4e0e\u591a\u5c4f\u6269\u5c55\u65b9\u6848\uff0c\u9002\u5408\u5e0c\u671b\u90e8\u7f72\u4e8e<strong>\u9ad8\u5e26\u5bbd\u3001\u4f4e\u5ef6\u8fdf\u7684\u9999\u6e2f\u670d\u52a1\u5668\u73af\u5883<\/strong>\u4e0b\u7684\u5f00\u53d1\u8005\u4e0e\u4f01\u4e1a\u4f7f\u7528\u3002<\/p>\n<h2>\u4e00\u3001\u6280\u672f\u539f\u7406\u4e0e\u7cfb\u7edf\u67b6\u6784\u89e3\u6790<\/h2>\n<p>DXGI\u6293\u5c4f\u7684\u6838\u5fc3\u5728\u4e8e\u901a\u8fc7<code>IDXGIOutputDuplication<\/code>\u63a5\u53e3\u5b9e\u73b0\u5bf9\u663e\u5361\u5e27\u7f13\u51b2\u7684\u9ad8\u6548\u8bbf\u95ee\u3002\u4e0d\u540c\u4e8e\u4f20\u7edf\u7684GDI\u673a\u5236\uff0cDXGI\u5728Windows 8\u53ca\u4ee5\u4e0a\u7cfb\u7edf\u4e2d\u63d0\u4f9b\u4e86\u5e27\u5dee\u5206\u6355\u83b7\u3001\u96f6\u62f7\u8d1d\u8bbf\u95ee\u7b49\u4f18\u52bf\uff0c\u663e\u8457\u63d0\u5347\u4e86\u6027\u80fd\u4e0e\u8d44\u6e90\u5229\u7528\u7387\u3002<\/p>\n<h3>\u5de5\u4f5c\u6d41\u7a0b\u6982\u89c8\uff1a<\/h3>\n<pre><code class=\"language-mermaid\">graph TD\r\nA[\u521d\u59cb\u5316D3D11\u8bbe\u5907] --&gt; B[\u83b7\u53d6\u8f93\u51fa\u63a5\u53e3]\r\nB --&gt; C[\u521b\u5efaDuplication\u63a5\u53e3]\r\nC --&gt; D[\u5faa\u73af\u5e27\u6355\u83b7]\r\nD --&gt; E[\u5185\u5b58\u6620\u5c04\u5904\u7406]\r\nE --&gt; F[\u6570\u636e\u62f7\u8d1d\u81f3\u7528\u6237\u7f13\u51b2\u533a]\r\n<\/code><\/pre>\n<h3>\u63a5\u53e3\u5c42\u7ea7\u7ed3\u6784\uff1a<\/h3>\n<pre><code class=\"language-mermaid\">graph TD\r\nIDXGIDevice --&gt; IDXGIAdapter\r\nIDXGIAdapter --&gt; IDXGIOutput\r\nIDXGIOutput --&gt; IDXGIOutput1\r\nIDXGIOutput1 --&gt; IDXGIOutputDuplication\r\n<\/code><\/pre>\n<p>\u5728\u521d\u59cb\u5316\u6d41\u7a0b\u4e2d\uff0c\u6211\u4eec\u4f7f\u7528<code>QueryInterface<\/code>\u5b8c\u6210COM\u63a5\u53e3\u7684\u9010\u5c42\u8bbf\u95ee\uff0c\u4ece\u8bbe\u5907\u5230\u8f93\u51fa\uff0c\u518d\u5230Duplication\u63a5\u53e3\u3002\u6574\u4e2a\u8fc7\u7a0b\u786e\u4fdd\u5c4f\u5e55\u5e27\u6570\u636e\u53ef\u4ee5\u9ad8\u6548\u83b7\u53d6\u5e76\u4f9b\u540e\u7eed\u5904\u7406\u4f7f\u7528\u3002<\/p>\n<h3>DXGI\u7684\u5173\u952e\u7279\u6027\uff1a<\/h3>\n<ul>\n<li><strong>\u4ec5\u5728\u5c4f\u5e55\u5185\u5bb9\u53d8\u66f4\u65f6\u89e6\u53d1\u6355\u83b7<\/strong>\uff0c\u663e\u8457\u964d\u4f4e\u7cfb\u7edf\u8d1f\u8f7d\uff1b<\/li>\n<li>\u9ed8\u8ba4\u5f3a\u5236\u8f93\u51fa32\u4f4dRGBA\u683c\u5f0f\uff0c\u51cf\u5c11\u56fe\u50cf\u683c\u5f0f\u8f6c\u6362\u5f00\u9500\uff1b<\/li>\n<li>\u652f\u6301\u5c40\u90e8\u533a\u57df\u6355\u83b7\uff0c\u9002\u5408\u5de5\u4e1a\u68c0\u6d4b\u3001\u8fdc\u7a0b\u534f\u52a9\u7b49\u5e94\u7528\u573a\u666f\u3002<\/li>\n<\/ul>\n<h2>\u4e8c\u3001\u4ee3\u7801\u5b9e\u73b0\u8981\u70b9<\/h2>\n<h3>\u521d\u59cb\u5316\u8bbe\u5907\u4e0e\u63a5\u53e3\u83b7\u53d6<\/h3>\n<pre><code class=\"language-cpp\">D3D11CreateDevice(nullptr, D3D_DRIVER_TYPE_HARDWARE, nullptr, 0, \r\n                  nullptr, 0, D3D11_SDK_VERSION, &amp;d3dDevice, nullptr, nullptr);\r\n\r\nIDXGIDevice* dxgiDevice = nullptr;\r\nd3dDevice-&gt;QueryInterface(__uuidof(IDXGIDevice), (void**)&amp;dxgiDevice);\r\n\r\nIDXGIAdapter* adapter = nullptr;\r\ndxgiDevice-&gt;GetAdapter(&amp;adapter);\r\n\r\nIDXGIOutput* output = nullptr;\r\nadapter-&gt;EnumOutputs(0, &amp;output);\r\n<\/code><\/pre>\n<h3>\u5e27\u6355\u83b7\u4e3b\u5faa\u73af<\/h3>\n<pre><code class=\"language-cpp\">output-&gt;DuplicateOutput(d3dDevice, &amp;duplication);\r\nwhile (true) {\r\n    DXGI_OUTDUPL_FRAME_INFO frameInfo;\r\n    IDXGIResource* screenResource = nullptr;\r\n    \r\n    HRESULT hr = duplication-&gt;AcquireNextFrame(500, &amp;frameInfo, &amp;screenResource);\r\n    if (hr == DXGI_ERROR_WAIT_TIMEOUT) continue;\r\n\r\n    \/\/ \u5904\u7406\u9f20\u6807\r\n    if (frameInfo.PointerPosition.Visible)\r\n        HandleMouseCursor(frameInfo.PointerPosition);\r\n\r\n    \/\/ \u83b7\u53d6\u7eb9\u7406\u6570\u636e\r\n    ID3D11Texture2D* screenTexture = nullptr;\r\n    screenResource-&gt;QueryInterface(__uuidof(ID3D11Texture2D), (void**)&amp;screenTexture);\r\n    \r\n    ID3D11Texture2D* stagingTexture;\r\n    CreateStagingTexture(screenTexture, &amp;stagingTexture);\r\n\r\n    d3dDeviceContext-&gt;CopyResource(stagingTexture, screenTexture);\r\n    ProcessFrameData(stagingTexture);\r\n    \r\n    duplication-&gt;ReleaseFrame();\r\n}\r\n<\/code><\/pre>\n<h2>\u4e09\u3001\u6027\u80fd\u4f18\u52bf\u4e0e\u53c2\u6570\u5bf9\u6bd4<\/h2>\n<table>\n<thead>\n<tr>\n<th>\u6355\u83b7\u6280\u672f<\/th>\n<th>\u5e27\u7387 (FPS)<\/th>\n<th>CPU\u5360\u7528\u7387<\/th>\n<th>\u517c\u5bb9\u7cfb\u7edf<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>GDI<\/td>\n<td>10-15<\/td>\n<td>15-25%<\/td>\n<td>WinXP+<\/td>\n<\/tr>\n<tr>\n<td><strong>DXGI<\/strong><\/td>\n<td><strong>60-120<\/strong><\/td>\n<td><strong>1-3%<\/strong><\/td>\n<td>Win8+<\/td>\n<\/tr>\n<tr>\n<td>Mirror\u9a71\u52a8<\/td>\n<td>30-60<\/td>\n<td>5-10%<\/td>\n<td>Win7\u53ca\u4ee5\u4e0b<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>DXGI\u5728<strong>\u9999\u6e2f\u72ec\u7acb\u670d\u52a1\u5668<\/strong>\u6216<strong>\u9999\u6e2f\u4e91\u670d\u52a1\u5668<\/strong>\u90e8\u7f72\u73af\u5883\u4e0b\uff0c\u5c24\u5176\u9002\u5408\u9ad8\u5e27\u7387\u3001\u4f4e\u5ef6\u8fdf\u7684\u89c6\u9891\u7f16\u7801\u4e0e\u7f51\u7edc\u4f20\u8f93\u4efb\u52a1\u3002<\/p>\n<h2>\u56db\u3001\u4f18\u5316\u7b56\u7565\u4e0e\u9ad8\u7ea7\u529f\u80fd<\/h2>\n<h3>\u5c40\u90e8\u533a\u57df\u622a\u53d6\u4f18\u5316<\/h3>\n<p>\u901a\u8fc7\u8bbe\u7f6e\u88c1\u526a\u533a\u57df\uff0c\u53ef\u4ee5\u4ec5\u6355\u83b7\u5c4f\u5e55\u7279\u5b9a\u90e8\u5206\uff0c\u5927\u5e45\u964d\u4f4e\u6570\u636e\u4f20\u8f93\u91cf\uff1a<\/p>\n<pre><code class=\"language-cpp\">RECT captureRect = {left, top, right, bottom};\r\nD3D11_BOX box = {left, top, 0, right, bottom, 1};\r\nd3dDeviceContext-&gt;CopySubresourceRegion(stagingTexture, 0, 0, 0, 0, screenTexture, 0, &amp;box);\r\n<\/code><\/pre>\n<h3>\u63a8\u8350\u6027\u80fd\u53c2\u6570\u914d\u7f6e\uff1a<\/h3>\n<table>\n<thead>\n<tr>\n<th>\u53c2\u6570\u540d\u79f0<\/th>\n<th>\u5efa\u8bae\u503c<\/th>\n<th>\u8bf4\u660e<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>AcquireTimeout<\/td>\n<td>30-100ms<\/td>\n<td>\u9632\u6b62\u957f\u65f6\u95f4\u963b\u585e<\/td>\n<\/tr>\n<tr>\n<td>\u6570\u636e\u62f7\u8d1d<\/td>\n<td>\u591a\u7ebf\u7a0b\u5e76\u53d1<\/td>\n<td>\u63d0\u9ad8\u591a\u6838CPU\u5229\u7528\u6548\u7387<\/td>\n<\/tr>\n<tr>\n<td>\u5185\u5b58\u7f13\u51b2\u533a<\/td>\n<td>\u9884\u5206\u914d\u5faa\u73af\u7ed3\u6784<\/td>\n<td>\u51cf\u5c11\u52a8\u6001\u5185\u5b58\u7533\u8bf7\u5ef6\u8fdf<\/td>\n<\/tr>\n<tr>\n<td>\u663e\u5b58\u6620\u5c04\u6a21\u5f0f<\/td>\n<td><code>D3D11_MAP_READ_NO_OVERWRITE<\/code><\/td>\n<td>\u907f\u514d\u8bbf\u95ee\u51b2\u7a81<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h3>\u6269\u5c55\u529f\u80fd\uff1a<\/h3>\n<ul>\n<li><strong>\u9f20\u6807\u6307\u9488\u5408\u6210<\/strong>\uff1a\u53e0\u52a0\u663e\u793a\u6355\u83b7\u65f6\u7684\u7cfb\u7edf\u5149\u6807\uff1b<\/li>\n<li><strong>\u591a\u5c4f\u652f\u6301<\/strong>\uff1a\u679a\u4e3e\u5168\u90e8<code>IDXGIOutput<\/code>\u63a5\u53e3\u5e76\u4e3a\u6bcf\u5757\u663e\u793a\u5668\u521b\u5efa\u72ec\u7acb\u5b9e\u4f8b\uff1b<\/li>\n<li><strong>GPU\u7f16\u7801\u96c6\u6210<\/strong>\uff1a\u7ed3\u5408NVENC\u6216Intel QSV\u53ef\u5b9e\u73b0\u9ad8\u6548H264\u7f16\u7801\uff1b<\/li>\n<\/ul>\n<h2>\u4e94\u3001\u9519\u8bef\u5904\u7406\u7b56\u7565<\/h2>\n<p>\u5728\u590d\u6742\u90e8\u7f72\u73af\u5883\u4e0b\uff0c\u9519\u8bef\u5904\u7406\u673a\u5236\u5fc5\u987b\u5065\u5168\uff1a<\/p>\n<pre><code class=\"language-cpp\">switch (hr) {\r\n    case DXGI_ERROR_DEVICE_REMOVED:\r\n        ReinitializeDevice(); break;\r\n    case DXGI_ERROR_ACCESS_LOST:\r\n        RecreateDuplicationInterface(); break;\r\n    case E_INVALIDARG:\r\n        ValidateCaptureRegion(); break;\r\n}\r\n<\/code><\/pre>\n<h2>\u516d\u3001\u90e8\u7f72\u4e0e\u9999\u6e2f\u670d\u52a1\u5668\u73af\u5883\u63a8\u8350<\/h2>\n<p>\u8003\u8651\u5230DXGI\u6280\u672f\u5bf9\u5e26\u5bbd\u3001\u5ef6\u8fdf\u548c\u56fe\u50cf\u5904\u7406\u6027\u80fd\u7684\u9ad8\u8981\u6c42\uff0c\u90e8\u7f72\u5728\u9ad8\u8d28\u91cf\u7f51\u7edc\u73af\u5883\u4e2d\u7684<strong>\u9999\u6e2fVPS<\/strong>\u6216<strong>\u9999\u6e2f\u4e91\u670d\u52a1\u5668<\/strong>\u80fd\u591f\u663e\u8457\u63d0\u5347\u6355\u83b7\u6548\u7387\uff0c\u5c24\u5176\u9002\u5408\uff1a<\/p>\n<ul>\n<li>\u6e38\u620f\u76f4\u64ad\u5e73\u53f0\u90e8\u7f72\uff0c\u5ef6\u8fdf\u63a7\u5236\u57285ms\u4ee5\u5185\uff1b<\/li>\n<li>\u4f01\u4e1a\u7ea7\u8fdc\u7a0b\u684c\u9762\u4e0eIT\u652f\u6301\uff1b<\/li>\n<li>\u89c6\u9891\u4f1a\u8bae\u7cfb\u7edf\u56fe\u50cf\u5171\u4eab\u6a21\u5757\uff1b<\/li>\n<li>\u5de5\u4e1a\u81ea\u52a8\u5316\u89c6\u9891\u5206\u6790\u7cfb\u7edf\uff08\u7ed3\u5408OpenCV\u5b9e\u65f6\u5904\u7406\uff09\uff1b<\/li>\n<\/ul>\n<p>\u4e3a\u4e86\u786e\u4fdd\u7cfb\u7edf\u7684\u9ad8\u53ef\u7528\u6027\u4e0e\u4f4e\u7f51\u7edc\u5ef6\u8fdf\uff0c\u5efa\u8bae\u9009\u62e9\u63a5\u5165\u56fd\u9645\u5e26\u5bbd\u7684\u4f18\u8d28<a href=\"https:\/\/idc.net\/\"><strong>\u9999\u6e2f\u670d\u52a1\u5668<\/strong><\/a>\u670d\u52a1\u5546\u8fdb\u884c\u90e8\u7f72\u3002\u6211\u4eec\u63d0\u4f9b\u9002\u7528\u4e8eDXGI\u6355\u83b7\u7cfb\u7edf\u7684\u9ad8\u6027\u80fd\u4e91\u670d\u52a1\u5668\u65b9\u6848\uff0c\u4e3a\u60a8\u7684\u5e94\u7528\u63d0\u4f9b\u5f3a\u5927\u652f\u6301\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>&nbsp; \u5f15\u8a00 \u968f\u7740\u8fdc\u7a0b\u529e\u516c\u3001\u6e38\u620f\u76f4\u64ad\u3001\u5728\u7ebf\u6559\u80b2\u7b49\u5e94\u7528\u5bf9\u5c4f\u5e55\u6355\u83b7\u6280\u672f\u7684\u6027\u80fd\u8981\u6c42\u6301\u7eed\u63d0\u5347\uff0c\u4f20\u7edfGDI\u65b9\u5f0f\u9010\u6e10 [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[34],"tags":[],"class_list":["post-441561","post","type-post","status-publish","format-standard","hentry","category-linux"],"_links":{"self":[{"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/posts\/441561","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/comments?post=441561"}],"version-history":[{"count":0,"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/posts\/441561\/revisions"}],"wp:attachment":[{"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/media?parent=441561"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/categories?post=441561"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/tags?post=441561"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}