{"id":31048,"date":"2025-04-21T07:07:38","date_gmt":"2025-04-20T23:07:38","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/31048.html"},"modified":"2025-04-21T07:07:38","modified_gmt":"2025-04-20T23:07:38","slug":"%e3%80%90%e6%93%8d%e4%bd%9c%e7%b3%bb%e7%bb%9f%e3%80%91%e5%8f%8c%e7%bc%93%e5%86%b2%e6%9c%ba%e5%88%b6%e5%90%ab%e5%8e%9f%e7%90%86%e3%80%81%e4%bc%98%e5%8a%bf%e3%80%81%e5%ae%9e%e7%8e%b0%e6%96%b9%e5%bc%8f","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/31048.html","title":{"rendered":"\u3010\u64cd\u4f5c\u7cfb\u7edf\u3011\u53cc\u7f13\u51b2\u673a\u5236(\u542b\u539f\u7406\u3001\u4f18\u52bf\u3001\u5b9e\u73b0\u65b9\u5f0f\u3001\u5e94\u7528\u573a\u666f)"},"content":{"rendered":"<\/p>\n<h4>\u53cc\u7f13\u51b2\u673a\u5236<\/h4>\n<ul>\n<li>\u4e00\u3001\u53cc\u7f13\u51b2\u673a\u5236\u7684\u539f\u7406<\/li>\n<li>\u4e8c\u3001\u53cc\u7f13\u51b2\u7684\u5178\u578b\u5e94\u7528\u573a\u666f<\/li>\n<li>\u4e09\u3001\u53cc\u7f13\u51b2\u7684\u4f18\u52bf<\/li>\n<li>\u56db\u3001\u53cc\u7f13\u51b2\u7684\u5b9e\u73b0\u65b9\u5f0f<\/li>\n<li>\n<ul>\n<li>1. \u786c\u4ef6\u7ea7\u53cc\u7f13\u51b2<\/li>\n<li>2. \u8f6f\u4ef6\u7ea7\u53cc\u7f13\u51b2<\/li>\n<li>3. \u6027\u80fd\u63d0\u5347\u5bf9\u6bd4<\/li>\n<\/ul>\n<\/li>\n<li>\u4e94\u3001\u53cc\u7f13\u51b2\u7684\u6311\u6218\u4e0e\u89e3\u51b3\u65b9\u6848<\/li>\n<li>\u516d\u3001\u603b\u7ed3<\/li>\n<\/ul>\n<p>\u53cc\u7f13\u51b2\u673a\u5236\u662f\u4e00\u79cd\u901a\u8fc7\u4f7f\u7528\u4e24\u4e2a\u7f13\u51b2\u533a&#xff08;Buffer A \u548c Buffer B&#xff09;\u6765\u4f18\u5316\u6570\u636e\u4f20\u8f93\u6216\u5904\u7406\u6548\u7387\u7684\u6280\u672f&#xff0c;\u5176\u6838\u5fc3\u539f\u7406\u662f\u5e76\u884c\u5904\u7406\u4e0e\u4ea4\u66ff\u5207\u6362\u3002\u4ee5\u4e0b\u662f\u8be6\u7ec6\u89e3\u6790&#xff1a;<\/p>\n<hr \/>\n<h2>\u4e00\u3001\u53cc\u7f13\u51b2\u673a\u5236\u7684\u539f\u7406<\/h2>\n<li>\n<p>\u57fa\u672c\u6982\u5ff5&#xff1a;<\/p>\n<ul>\n<li>\u53cc\u7f13\u51b2\u533a&#xff1a;\u7cfb\u7edf\u7ef4\u62a4\u4e24\u4e2a\u76f8\u540c\u5927\u5c0f\u7684\u5185\u5b58\u533a\u57df\u3002<\/li>\n<li>\u5206\u5de5\u534f\u4f5c&#xff1a;\n<ul>\n<li>\u751f\u4ea7\u8005&#xff08;\u5982\u4f20\u611f\u5668\u3001DMA&#xff09;&#xff1a;\u5411\u4e00\u4e2a\u7f13\u51b2\u533a&#xff08;\u5982 Buffer A&#xff09;\u5199\u5165\u6570\u636e\u3002<\/li>\n<li>\u6d88\u8d39\u8005&#xff08;\u5982CPU\u3001\u663e\u793a\u6a21\u5757&#xff09;&#xff1a;\u4ece\u53e6\u4e00\u4e2a\u7f13\u51b2\u533a&#xff08;\u5982 Buffer B&#xff09;\u8bfb\u53d6\u6570\u636e\u3002<\/li>\n<\/ul>\n<\/li>\n<li>\u4ea4\u66ff\u5207\u6362&#xff1a;\u5f53\u751f\u4ea7\u8005\u586b\u6ee1 Buffer A \u540e&#xff0c;\u7acb\u5373\u5207\u6362\u5230 Buffer B \u7ee7\u7eed\u5199\u5165&#xff0c;\u540c\u65f6\u6d88\u8d39\u8005\u5904\u7406 Buffer A \u7684\u6570\u636e&#xff0c;\u53cd\u4e4b\u4ea6\u7136\u3002<\/li>\n<\/ul>\n<\/li>\n<li>\n<p>\u5de5\u4f5c\u6d41\u7a0b&#xff1a;<\/p>\n<p> &#043;&#8212;&#8212;&#8212;&#8211;&#043;               &#043;&#8212;&#8212;&#8212;&#8211;&#043;<br \/>\n| \u751f\u4ea7\u8005    | \u2192 \u5199\u5165 \u2192 Buffer A \u2192 \u6d88\u8d39\u8005\u8bfb\u53d6<br \/>\n&#043;&#8212;&#8212;&#8212;&#8211;&#043;               &#043;&#8212;&#8212;&#8212;&#8211;&#043;<br \/>\n      |                           |<br \/>\n      | \u5207\u6362                      | \u5207\u6362<br \/>\n      \u2193                           \u2193<br \/>\n&#043;&#8212;&#8212;&#8212;&#8211;&#043;               &#043;&#8212;&#8212;&#8212;&#8211;&#043;<br \/>\n| \u751f\u4ea7\u8005    | \u2192 \u5199\u5165 \u2192 Buffer B \u2192 \u6d88\u8d39\u8005\u8bfb\u53d6<br \/>\n&#043;&#8212;&#8212;&#8212;&#8211;&#043;               &#043;&#8212;&#8212;&#8212;&#8211;&#043;\n <\/li>\n<hr \/>\n<h2>\u4e8c\u3001\u53cc\u7f13\u51b2\u7684\u5178\u578b\u5e94\u7528\u573a\u666f<\/h2>\n<li>\n<p>\u56fe\u5f62\u6e32\u67d3&#xff1a;<\/p>\n<ul>\n<li>\u524d\u53f0\u7f13\u51b2&#xff1a;\u5f53\u524d\u663e\u793a\u7684\u56fe\u50cf\u6570\u636e\u3002<\/li>\n<li>\u540e\u53f0\u7f13\u51b2&#xff1a;\u4e0b\u4e00\u5e27\u5f85\u6e32\u67d3\u7684\u56fe\u50cf\u6570\u636e\u3002<\/li>\n<li>\u5782\u76f4\u540c\u6b65&#xff08;VSync&#xff09;&#xff1a;\u5728\u5c4f\u5e55\u5237\u65b0\u65f6\u5207\u6362\u7f13\u51b2&#xff0c;\u907f\u514d\u753b\u9762\u6495\u88c2\u3002<\/li>\n<\/ul>\n<\/li>\n<li>\n<p>\u5b9e\u65f6\u6570\u636e\u4f20\u8f93&#xff08;\u5982\u97f3\u9891\u3001\u89c6\u9891\u6d41&#xff09;&#xff1a;<\/p>\n<ul>\n<li>DMA\u53cc\u7f13\u51b2&#xff1a;DMA \u586b\u5145 Buffer A \u65f6&#xff0c;CPU \u5904\u7406 Buffer B \u7684\u6570\u636e&#xff0c;\u53cd\u4e4b\u4ea6\u7136&#xff0c;\u786e\u4fdd\u8fde\u7eed\u4f20\u8f93\u3002<\/li>\n<\/ul>\n<\/li>\n<li>\n<p>\u6570\u636e\u91c7\u96c6\u7cfb\u7edf&#xff1a;<\/p>\n<ul>\n<li>\u4f20\u611f\u5668\u6301\u7eed\u91c7\u96c6\u6570\u636e\u5230 Buffer A&#xff0c;\u540c\u65f6\u7b97\u6cd5\u5904\u7406 Buffer B \u7684\u5386\u53f2\u6570\u636e\u3002<\/li>\n<\/ul>\n<\/li>\n<hr \/>\n<h2>\u4e09\u3001\u53cc\u7f13\u51b2\u7684\u4f18\u52bf<\/h2>\n<table>\n<tr>\u4f18\u52bf\u8bf4\u660e<\/tr>\n<tbody>\n<tr>\n<td>\u6d88\u9664\u7b49\u5f85\u65f6\u95f4<\/td>\n<td>\u751f\u4ea7\u8005\u548c\u6d88\u8d39\u8005\u65e0\u9700\u4e92\u76f8\u7b49\u5f85&#xff0c;\u5b9e\u73b0\u5e76\u884c\u64cd\u4f5c\u3002<\/td>\n<\/tr>\n<tr>\n<td>\u907f\u514d\u6570\u636e\u51b2\u7a81<\/td>\n<td>\u8bfb\u5199\u64cd\u4f5c\u5206\u79bb&#xff0c;\u9632\u6b62\u6570\u636e\u8986\u76d6&#xff08;\u5982DMA\u4f20\u8f93\u4e2d\u7684\u6ea2\u51fa&#xff09;\u3002<\/td>\n<\/tr>\n<tr>\n<td>\u63d0\u9ad8\u541e\u5410\u91cf<\/td>\n<td>\u5145\u5206\u5229\u7528\u786c\u4ef6\u5e26\u5bbd&#xff08;\u5982GPU\u663e\u5b58\u3001DMA\u63a7\u5236\u5668&#xff09;\u3002<\/td>\n<\/tr>\n<tr>\n<td>\u589e\u5f3a\u5b9e\u65f6\u6027<\/td>\n<td>\u9002\u7528\u4e8e\u9ad8\u5e27\u7387\u3001\u4f4e\u5ef6\u8fdf\u573a\u666f&#xff08;\u5982VR\u3001\u9ad8\u901f\u6570\u636e\u91c7\u96c6&#xff09;\u3002<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<hr \/>\n<h2>\u56db\u3001\u53cc\u7f13\u51b2\u7684\u5b9e\u73b0\u65b9\u5f0f<\/h2>\n<h3>1. \u786c\u4ef6\u7ea7\u53cc\u7f13\u51b2<\/h3>\n<ul>\n<li>\u793a\u4f8b&#xff1a;GPU\u663e\u5b58\u4e2d\u7684\u53cc\u7f13\u51b2\u673a\u5236\u3002<\/li>\n<li>\u64cd\u4f5c&#xff1a;\u901a\u8fc7\u786c\u4ef6\u5bc4\u5b58\u5668\u5207\u6362\u663e\u793a\u7f13\u51b2\u533a\u7684\u5730\u5740\u3002<\/li>\n<li>\u4ee3\u7801\u7247\u6bb5&#xff08;\u4f2a\u4ee3\u7801&#xff09;&#xff1a;<span class=\"token comment\">\/\/ \u521d\u59cb\u5316\u53cc\u7f13\u51b2<\/span><br \/>\n<span class=\"token class-name\">uint32_t<\/span> buffer0<span class=\"token punctuation\">[<\/span>BUFFER_SIZE<span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">,<\/span> buffer1<span class=\"token punctuation\">[<\/span>BUFFER_SIZE<span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token class-name\">uint32_t<\/span> <span class=\"token operator\">*<\/span>front_buffer <span class=\"token operator\">&#061;<\/span> buffer0<span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token class-name\">uint32_t<\/span> <span class=\"token operator\">*<\/span>back_buffer <span class=\"token operator\">&#061;<\/span> buffer1<span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token comment\">\/\/ \u6e32\u67d3\u5faa\u73af<\/span><br \/>\n<span class=\"token keyword\">while<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token number\">1<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token function\">render_to<\/span><span class=\"token punctuation\">(<\/span>back_buffer<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>       <span class=\"token comment\">\/\/ \u6e32\u67d3\u5230\u540e\u53f0\u7f13\u51b2<\/span><br \/>\n    <span class=\"token function\">swap_buffers<\/span><span class=\"token punctuation\">(<\/span><span class=\"token operator\">&amp;<\/span>front_buffer<span class=\"token punctuation\">,<\/span> <span class=\"token operator\">&amp;<\/span>back_buffer<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ \u5207\u6362\u7f13\u51b2<\/span><br \/>\n    <span class=\"token function\">display<\/span><span class=\"token punctuation\">(<\/span>front_buffer<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>        <span class=\"token comment\">\/\/ \u663e\u793a\u524d\u53f0\u7f13\u51b2<\/span><br \/>\n<span class=\"token punctuation\">}<\/span>\n <\/li>\n<\/ul>\n<h3>2. \u8f6f\u4ef6\u7ea7\u53cc\u7f13\u51b2<\/h3>\n<ul>\n<li>\u793a\u4f8b&#xff1a;\u97f3\u9891\u64ad\u653e\u5668\u7684\u53cc\u7f13\u51b2\u3002<\/li>\n<li>\u64cd\u4f5c&#xff1a;\u4f7f\u7528\u4fe1\u53f7\u91cf\u6216\u4e92\u65a5\u9501\u540c\u6b65\u7f13\u51b2\u533a\u8bbf\u95ee\u3002<\/li>\n<li>\u4ee3\u7801\u7247\u6bb5&#xff08;\u4f2a\u4ee3\u7801&#xff09;&#xff1a;<span class=\"token comment\">\/\/ \u5b9a\u4e49\u7f13\u51b2\u533a\u548c\u6807\u5fd7<\/span><br \/>\nBuffer bufA<span class=\"token punctuation\">,<\/span> bufB<span class=\"token punctuation\">;<\/span><br \/>\nbool bufA_ready <span class=\"token operator\">&#061;<\/span> false<span class=\"token punctuation\">,<\/span> bufB_ready <span class=\"token operator\">&#061;<\/span> false<span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token comment\">\/\/ \u751f\u4ea7\u8005\u7ebf\u7a0b&#xff08;\u586b\u5145\u6570\u636e&#xff09;<\/span><br \/>\n<span class=\"token keyword\">void<\/span> <span class=\"token function\">producer<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token keyword\">while<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token number\">1<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token operator\">!<\/span>bufA_ready<span class=\"token punctuation\">)<\/span> <span class=\"token function\">fill_data<\/span><span class=\"token punctuation\">(<\/span><span class=\"token operator\">&amp;<\/span>bufA<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token keyword\">else<\/span> <span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token operator\">!<\/span>bufB_ready<span class=\"token punctuation\">)<\/span> <span class=\"token function\">fill_data<\/span><span class=\"token punctuation\">(<\/span><span class=\"token operator\">&amp;<\/span>bufB<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p><span class=\"token comment\">\/\/ \u6d88\u8d39\u8005\u7ebf\u7a0b&#xff08;\u5904\u7406\u6570\u636e&#xff09;<\/span><br \/>\n<span class=\"token keyword\">void<\/span> <span class=\"token function\">consumer<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token keyword\">while<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token number\">1<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span>bufA_ready<span class=\"token punctuation\">)<\/span> <span class=\"token function\">process_data<\/span><span class=\"token punctuation\">(<\/span><span class=\"token operator\">&amp;<\/span>bufA<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token keyword\">else<\/span> <span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span>bufB_ready<span class=\"token punctuation\">)<\/span> <span class=\"token function\">process_data<\/span><span class=\"token punctuation\">(<\/span><span class=\"token operator\">&amp;<\/span>bufB<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token punctuation\">}<\/span>\n <\/li>\n<\/ul>\n<hr \/>\n<h3>3. \u6027\u80fd\u63d0\u5347\u5bf9\u6bd4<\/h3>\n<table>\n<tr>\u6307\u6807\u5355\u7f13\u51b2\u53cc\u7f13\u51b2<\/tr>\n<tbody>\n<tr>\n<td>\u6570\u636e\u4f20\u8f93\u5ef6\u8fdf<\/td>\n<td>\u9ad8&#xff08;\u7b49\u5f85\u7a7a\u95f2&#xff09;<\/td>\n<td>\u4f4e&#xff08;\u65e0\u7f1d\u5207\u6362&#xff09;<\/td>\n<\/tr>\n<tr>\n<td>CPU\u5229\u7528\u7387<\/td>\n<td>\u9891\u7e41\u7b49\u5f85\/\u4e2d\u65ad<\/td>\n<td>\u6301\u7eed\u5904\u7406\u6570\u636e<\/td>\n<\/tr>\n<tr>\n<td>\u6570\u636e\u4e22\u5931\u7387<\/td>\n<td>\u9ad8&#xff08;\u6ea2\u51fa\u98ce\u9669&#xff09;<\/td>\n<td>\u8d8b\u8fd1\u4e8e0<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<hr 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