{"id":53037,"date":"2025-08-11T23:14:22","date_gmt":"2025-08-11T15:14:22","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/53037.html"},"modified":"2025-08-11T23:14:22","modified_gmt":"2025-08-11T15:14:22","slug":"opengl-vao-%e6%a6%82%e5%bf%b5%e3%80%81api-%e5%92%8c%e7%a4%ba%e4%be%8b","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/53037.html","title":{"rendered":"OpenGL VAO \u6982\u5ff5\u3001API \u548c\u793a\u4f8b"},"content":{"rendered":"<h2>\u5f15\u8a00<\/h2>\n<p>\u5728\u73b0\u4ee33D\u56fe\u5f62\u7f16\u7a0b\u4e2d&#xff0c;OpenGL\u662f\u4e00\u4e2a\u5e7f\u6cdb\u4f7f\u7528\u7684API&#xff0c;\u7528\u4e8e\u6e32\u67d3\u9ad8\u8d28\u91cf\u7684\u56fe\u5f62\u3002\u968f\u7740OpenGL\u7248\u672c\u7684\u6f14\u8fdb&#xff0c;\u5176\u529f\u80fd\u548c\u6027\u80fd\u4e5f\u5728\u4e0d\u65ad\u63d0\u5347\u3002\u5728 OpenGL 3.0 \u4e4b\u540e&#xff0c;\u5f15\u5165\u4e86\u9876\u70b9\u6570\u7ec4\u5bf9\u8c61&#xff08;VAO&#xff09;&#xff0c;\u8fd9\u4f7f\u5f97\u9876\u70b9\u6570\u636e\u7684\u7ba1\u7406\u66f4\u52a0\u9ad8\u6548\u548c\u4fbf\u6377\u3002\u672c\u6587\u5c06\u8be6\u7ec6\u4ecb\u7ecd VAO \u7684\u6982\u5ff5\u3001API \u4f7f\u7528\u65b9\u6cd5&#xff0c;\u5e76\u63d0\u4f9b\u4e00\u4e2a\u7b80\u5355\u7684\u793a\u4f8b\u3002<\/p>\n<h2>\u9876\u70b9\u6570\u7ec4\u5bf9\u8c61&#xff08;VAO&#xff09;\u6982\u5ff5<\/h2>\n<p>\u9876\u70b9\u6570\u7ec4\u5bf9\u8c61&#xff08;Vertex Array Object&#xff0c;VAO&#xff09;\u662f OpenGL 3.0 \u5f15\u5165\u7684\u4e00\u4e2a\u91cd\u8981\u6982\u5ff5&#xff0c;\u7528\u4e8e\u7b80\u5316\u9876\u70b9\u6570\u636e\u7684\u7ba1\u7406\u3002VAO \u662f\u4e00\u79cd\u5bf9\u8c61&#xff0c;\u5b83\u80fd\u591f\u5c06\u9876\u70b9\u5c5e\u6027&#xff08;\u5982\u4f4d\u7f6e\u3001\u989c\u8272\u3001\u7eb9\u7406\u5750\u6807\u7b49&#xff09;\u7ed1\u5b9a\u5230\u9876\u70b9\u7f13\u51b2\u5bf9\u8c61&#xff08;VBO&#xff09;\u4e2d\u3002\u901a\u8fc7\u4f7f\u7528 VAO&#xff0c;\u53ef\u4ee5\u663e\u8457\u51cf\u5c11 OpenGL API \u7684\u8c03\u7528\u6b21\u6570&#xff0c;\u4ece\u800c\u63d0\u9ad8\u6e32\u67d3\u6027\u80fd\u3002<\/p>\n<h3>\u4e3a\u4ec0\u4e48\u9700\u8981 VAO&#xff1f;<\/h3>\n<p>\u5728 OpenGL \u65e9\u671f\u7248\u672c\u4e2d&#xff0c;\u9876\u70b9\u5c5e\u6027\u7684\u914d\u7f6e\u9700\u8981\u901a\u8fc7\u4e00\u7cfb\u5217\u7684 OpenGL \u51fd\u6570\u8c03\u7528\u6765\u5b8c\u6210&#xff0c;\u4f8b\u5982 glVertexAttribPointer \u548c glEnableVertexAttribArray\u3002\u6bcf\u6b21\u6e32\u67d3\u65f6&#xff0c;\u8fd9\u4e9b\u914d\u7f6e\u90fd\u9700\u8981\u91cd\u65b0\u8bbe\u7f6e&#xff0c;\u8fd9\u4f1a\u5bfc\u81f4\u5927\u91cf\u7684 API \u8c03\u7528&#xff0c;\u4ece\u800c\u5f71\u54cd\u6027\u80fd\u3002<\/p>\n<p>VAO \u7684\u5f15\u5165\u89e3\u51b3\u4e86\u8fd9\u4e00\u95ee\u9898\u3002VAO \u53ef\u4ee5\u5c06\u6240\u6709\u7684\u9876\u70b9\u5c5e\u6027\u914d\u7f6e\u4fdd\u5b58\u5728\u4e00\u4e2a\u5bf9\u8c61\u4e2d&#xff0c;\u8fd9\u6837\u5728\u6e32\u67d3\u65f6&#xff0c;\u53ea\u9700\u8981\u7ed1\u5b9a VAO \u5c31\u53ef\u4ee5\u6062\u590d\u6240\u6709\u7684\u914d\u7f6e&#xff0c;\u800c\u65e0\u9700\u91cd\u65b0\u8bbe\u7f6e\u6bcf\u4e2a\u9876\u70b9\u5c5e\u6027\u3002\u8fd9\u4e0d\u4ec5\u7b80\u5316\u4e86\u4ee3\u7801&#xff0c;\u8fd8\u63d0\u9ad8\u4e86\u6e32\u67d3\u6548\u7387\u3002<\/p>\n<h3>VAO \u7684\u5de5\u4f5c\u539f\u7406<\/h3>\n<p>VAO \u7684\u5de5\u4f5c\u539f\u7406\u53ef\u4ee5\u7b80\u5355\u5730\u7406\u89e3\u4e3a\u5c06\u9876\u70b9\u5c5e\u6027\u7684\u914d\u7f6e\u4fe1\u606f\u4fdd\u5b58\u5230\u4e00\u4e2a\u5bf9\u8c61\u4e2d\u3002\u5f53\u9700\u8981\u6e32\u67d3\u65f6&#xff0c;\u53ea\u9700\u8981\u7ed1\u5b9a\u8fd9\u4e2a\u5bf9\u8c61&#xff0c;OpenGL \u5c31\u4f1a\u81ea\u52a8\u4f7f\u7528\u5176\u4e2d\u4fdd\u5b58\u7684\u914d\u7f6e\u4fe1\u606f\u6765\u5904\u7406\u9876\u70b9\u6570\u636e\u3002<\/p>\n<p>\u5177\u4f53\u6765\u8bf4&#xff0c;VAO \u5305\u542b\u4ee5\u4e0b\u4fe1\u606f&#xff1a;<\/p>\n<li>\u9876\u70b9\u5c5e\u6027\u6570\u7ec4\u7684\u6307\u9488&#xff1a;\u901a\u8fc7 glVertexAttribPointer \u8bbe\u7f6e\u7684\u9876\u70b9\u5c5e\u6027\u6570\u7ec4\u7684\u6307\u9488\u3002<\/li>\n<li>\u9876\u70b9\u5c5e\u6027\u6570\u7ec4\u7684\u542f\u7528\u72b6\u6001&#xff1a;\u901a\u8fc7 glEnableVertexAttribArray \u542f\u7528\u7684\u9876\u70b9\u5c5e\u6027\u6570\u7ec4\u7684\u72b6\u6001\u3002<\/li>\n<li>\u9876\u70b9\u7f13\u51b2\u5bf9\u8c61&#xff08;VBO&#xff09;\u7684\u7ed1\u5b9a\u72b6\u6001&#xff1a;VAO \u672c\u8eab\u5e76\u4e0d\u5b58\u50a8\u9876\u70b9\u6570\u636e&#xff0c;\u800c\u662f\u5f15\u7528\u7ed1\u5b9a\u5230\u5b83\u7684 VBO\u3002<\/li>\n<h3>VAO \u7684\u4f18\u52bf<\/h3>\n<p>\u4f7f\u7528 VAO \u7684\u4e3b\u8981\u4f18\u52bf\u5305\u62ec&#xff1a;<\/p>\n<li>\u51cf\u5c11 API \u8c03\u7528&#xff1a;VAO \u5c06\u6240\u6709\u7684\u9876\u70b9\u5c5e\u6027\u914d\u7f6e\u4fdd\u5b58\u5728\u4e00\u4e2a\u5bf9\u8c61\u4e2d&#xff0c;\u6e32\u67d3\u65f6\u53ea\u9700\u7ed1\u5b9a VAO&#xff0c;\u800c\u65e0\u9700\u91cd\u590d\u8bbe\u7f6e\u6bcf\u4e2a\u9876\u70b9\u5c5e\u6027\u3002<\/li>\n<li>\u63d0\u9ad8\u6027\u80fd&#xff1a;\u7531\u4e8e\u51cf\u5c11\u4e86 API \u8c03\u7528\u6b21\u6570&#xff0c;VAO \u53ef\u4ee5\u663e\u8457\u63d0\u9ad8\u6e32\u67d3\u6027\u80fd&#xff0c;\u5c24\u5176\u662f\u5728\u5904\u7406\u5927\u91cf\u9876\u70b9\u6570\u636e\u65f6\u3002<\/li>\n<li>\u7b80\u5316\u4ee3\u7801&#xff1a;VAO \u5c06\u9876\u70b9\u5c5e\u6027\u914d\u7f6e\u96c6\u4e2d\u7ba1\u7406&#xff0c;\u4f7f\u5f97\u4ee3\u7801\u66f4\u52a0\u7b80\u6d01\u548c\u6613\u4e8e\u7ef4\u62a4\u3002<\/li>\n<h2>VAO \u7684 API \u4f7f\u7528<\/h2>\n<p>\u5728 OpenGL \u4e2d&#xff0c;VAO \u7684\u4f7f\u7528\u4e3b\u8981\u6d89\u53ca\u4ee5\u4e0b\u51e0\u4e2a\u51fd\u6570&#xff1a;<\/p>\n<li>glGenVertexArrays&#xff1a;\u751f\u6210 VAO \u5bf9\u8c61\u3002<\/li>\n<li>glBindVertexArray&#xff1a;\u7ed1\u5b9a VAO \u5bf9\u8c61\u3002<\/li>\n<li>glVertexAttribPointer&#xff1a;\u8bbe\u7f6e\u9876\u70b9\u5c5e\u6027\u6570\u7ec4\u7684\u6307\u9488\u3002<\/li>\n<li>glEnableVertexAttribArray&#xff1a;\u542f\u7528\u9876\u70b9\u5c5e\u6027\u6570\u7ec4\u3002<\/li>\n<li>glDeleteVertexArrays&#xff1a;\u5220\u9664 VAO \u5bf9\u8c61\u3002<\/li>\n<p>\u4e0b\u9762\u5c06\u8be6\u7ec6\u4ecb\u7ecd\u8fd9\u4e9b\u51fd\u6570\u7684\u4f7f\u7528\u65b9\u6cd5\u3002<\/p>\n<h3>1. \u751f\u6210 VAO \u5bf9\u8c61<\/h3>\n<p>glGenVertexArrays \u51fd\u6570\u7528\u4e8e\u751f\u6210\u4e00\u4e2a\u65b0\u7684 VAO \u5bf9\u8c61\u3002\u5176\u51fd\u6570\u539f\u578b\u5982\u4e0b&#xff1a;<\/p>\n<p><span class=\"token keyword\">void<\/span> <span class=\"token function\">glGenVertexArrays<\/span><span class=\"token punctuation\">(<\/span>GLsizei n<span class=\"token punctuation\">,<\/span> GLuint <span class=\"token operator\">*<\/span>arrays<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>\u5176\u4e2d&#xff0c;n \u662f\u8981\u751f\u6210\u7684 VAO \u5bf9\u8c61\u7684\u6570\u91cf&#xff0c;arrays \u662f\u4e00\u4e2a\u6307\u5411 GLuint \u7c7b\u578b\u7684\u6570\u7ec4&#xff0c;\u7528\u4e8e\u5b58\u50a8\u751f\u6210\u7684 VAO \u5bf9\u8c61\u7684\u53e5\u67c4\u3002<\/p>\n<p>\u793a\u4f8b\u4ee3\u7801&#xff1a;<\/p>\n<p>GLuint vao<span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token function\">glGenVertexArrays<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">1<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token operator\">&amp;<\/span>vao<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<h3>2. \u7ed1\u5b9a VAO \u5bf9\u8c61<\/h3>\n<p>glBindVertexArray \u51fd\u6570\u7528\u4e8e\u7ed1\u5b9a\u4e00\u4e2a VAO \u5bf9\u8c61\u3002\u5176\u51fd\u6570\u539f\u578b\u5982\u4e0b&#xff1a;<\/p>\n<p><span class=\"token keyword\">void<\/span> <span class=\"token function\">glBindVertexArray<\/span><span class=\"token punctuation\">(<\/span>GLuint array<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>\u5176\u4e2d&#xff0c;array \u662f\u8981\u7ed1\u5b9a\u7684 VAO \u5bf9\u8c61\u7684\u53e5\u67c4\u3002\u7ed1\u5b9a VAO \u5bf9\u8c61\u540e&#xff0c;\u540e\u7eed\u7684\u9876\u70b9\u5c5e\u6027\u914d\u7f6e\u5c06\u88ab\u4fdd\u5b58\u5230\u8be5 VAO \u5bf9\u8c61\u4e2d\u3002<\/p>\n<p>\u793a\u4f8b\u4ee3\u7801&#xff1a;<\/p>\n<p><span class=\"token function\">glBindVertexArray<\/span><span class=\"token punctuation\">(<\/span>vao<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<h3>3. \u8bbe\u7f6e\u9876\u70b9\u5c5e\u6027\u6570\u7ec4\u7684\u6307\u9488<\/h3>\n<p>glVertexAttribPointer \u51fd\u6570\u7528\u4e8e\u8bbe\u7f6e\u9876\u70b9\u5c5e\u6027\u6570\u7ec4\u7684\u6307\u9488\u3002\u5176\u51fd\u6570\u539f\u578b\u5982\u4e0b&#xff1a;<\/p>\n<p><span class=\"token keyword\">void<\/span> <span class=\"token function\">glVertexAttribPointer<\/span><span class=\"token punctuation\">(<\/span>GLuint index<span class=\"token punctuation\">,<\/span> GLint size<span class=\"token punctuation\">,<\/span> GLenum type<span class=\"token punctuation\">,<\/span> GLboolean normalized<span class=\"token punctuation\">,<\/span> GLsizei stride<span class=\"token punctuation\">,<\/span> <span class=\"token keyword\">const<\/span> GLvoid <span class=\"token operator\">*<\/span>pointer<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>\u5176\u4e2d&#xff1a;<\/p>\n<ul>\n<li>index&#xff1a;\u9876\u70b9\u5c5e\u6027\u7684\u7d22\u5f15\u53f7\u3002<\/li>\n<li>size&#xff1a;\u9876\u70b9\u5c5e\u6027\u7684\u5927\u5c0f&#xff0c;\u4f8b\u5982&#xff0c;\u4f4d\u7f6e\u5c5e\u6027\u901a\u5e38\u662f 3 \u4e2a\u6d6e\u70b9\u6570&#xff08;x, y, z&#xff09;\u3002<\/li>\n<li>type&#xff1a;\u9876\u70b9\u5c5e\u6027\u7684\u6570\u636e\u7c7b\u578b&#xff0c;\u4f8b\u5982 GL_FLOAT\u3002<\/li>\n<li>normalized&#xff1a;\u662f\u5426\u5bf9\u6570\u636e\u8fdb\u884c\u5f52\u4e00\u5316\u5904\u7406&#xff0c;\u901a\u5e38\u8bbe\u7f6e\u4e3a GL_FALSE\u3002<\/li>\n<li>stride&#xff1a;\u9876\u70b9\u6570\u636e\u4e4b\u95f4\u7684\u6b65\u957f&#xff0c;\u4ee5\u5b57\u8282\u4e3a\u5355\u4f4d\u3002<\/li>\n<li>pointer&#xff1a;\u9876\u70b9\u6570\u636e\u7684\u8d77\u59cb\u4f4d\u7f6e\u3002<\/li>\n<\/ul>\n<p>\u793a\u4f8b\u4ee3\u7801&#xff1a;<\/p>\n<p><span class=\"token function\">glVertexAttribPointer<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">0<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token number\">3<\/span><span class=\"token punctuation\">,<\/span> GL_FLOAT<span class=\"token punctuation\">,<\/span> GL_FALSE<span class=\"token punctuation\">,<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token keyword\">void<\/span><span class=\"token operator\">*<\/span><span class=\"token punctuation\">)<\/span><span class=\"token number\">0<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<h3>4. \u542f\u7528\u9876\u70b9\u5c5e\u6027\u6570\u7ec4<\/h3>\n<p>glEnableVertexAttribArray \u51fd\u6570\u7528\u4e8e\u542f\u7528\u9876\u70b9\u5c5e\u6027\u6570\u7ec4\u3002\u5176\u51fd\u6570\u539f\u578b\u5982\u4e0b&#xff1a;<\/p>\n<p><span class=\"token keyword\">void<\/span> <span class=\"token function\">glEnableVertexAttribArray<\/span><span class=\"token punctuation\">(<\/span>GLuint index<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>\u5176\u4e2d&#xff0c;index \u662f\u8981\u542f\u7528\u7684\u9876\u70b9\u5c5e\u6027\u7684\u7d22\u5f15\u53f7\u3002<\/p>\n<p>\u793a\u4f8b\u4ee3\u7801&#xff1a;<\/p>\n<p><span class=\"token function\">glEnableVertexAttribArray<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">0<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<h3>5. \u5220\u9664 VAO \u5bf9\u8c61<\/h3>\n<p>glDeleteVertexArrays \u51fd\u6570\u7528\u4e8e\u5220\u9664\u4e00\u4e2a\u6216\u591a\u4e2a VAO \u5bf9\u8c61\u3002\u5176\u51fd\u6570\u539f\u578b\u5982\u4e0b&#xff1a;<\/p>\n<p><span class=\"token keyword\">void<\/span> <span class=\"token function\">glDeleteVertexArrays<\/span><span class=\"token punctuation\">(<\/span>GLsizei n<span class=\"token punctuation\">,<\/span> <span class=\"token keyword\">const<\/span> GLuint <span class=\"token operator\">*<\/span>arrays<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>\u5176\u4e2d&#xff0c;n \u662f\u8981\u5220\u9664\u7684 VAO \u5bf9\u8c61\u7684\u6570\u91cf&#xff0c;arrays \u662f\u4e00\u4e2a\u6307\u5411 GLuint \u7c7b\u578b\u7684\u6570\u7ec4&#xff0c;\u5305\u542b\u8981\u5220\u9664\u7684 VAO \u5bf9\u8c61\u7684\u53e5\u67c4\u3002<\/p>\n<p>\u793a\u4f8b\u4ee3\u7801&#xff1a;<\/p>\n<p><span class=\"token function\">glDeleteVertexArrays<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">1<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token operator\">&amp;<\/span>vao<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<h2>\u793a\u4f8b\u4ee3\u7801<\/h2>\n<p>\u4e0b\u9762\u662f\u4e00\u4e2a\u5b8c\u6574\u7684\u793a\u4f8b\u4ee3\u7801&#xff0c;\u5c55\u793a\u4e86\u5982\u4f55\u4f7f\u7528 VAO \u6765\u6e32\u67d3\u4e00\u4e2a\u7b80\u5355\u7684\u4e09\u89d2\u5f62\u3002<\/p>\n<h3>1. \u5305\u542b\u5fc5\u8981\u7684\u5934\u6587\u4ef6<\/h3>\n<p><span class=\"token macro property\"><span class=\"token directive-hash\">#<\/span><span class=\"token directive keyword\">include<\/span> <span class=\"token string\">&lt;GL\/glew.h&gt;<\/span><\/span><br \/>\n<span class=\"token macro property\"><span class=\"token directive-hash\">#<\/span><span class=\"token directive keyword\">include<\/span> <span class=\"token string\">&lt;GLFW\/glfw3.h&gt;<\/span><\/span><br \/>\n<span class=\"token macro property\"><span class=\"token directive-hash\">#<\/span><span class=\"token directive keyword\">include<\/span> <span class=\"token string\">&lt;stdio.h&gt;<\/span><\/span><\/p>\n<h3>2. \u5b9a\u4e49\u9876\u70b9\u6570\u636e<\/h3>\n<p><span class=\"token comment\">\/\/ \u9876\u70b9\u5750\u6807<\/span><br \/>\nGLfloat vertices<span class=\"token punctuation\">[<\/span><span class=\"token punctuation\">]<\/span> <span class=\"token operator\">&#061;<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token number\">0.0f<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token number\">0.5f<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token number\">0.0f<\/span><span class=\"token punctuation\">,<\/span><br \/>\n    <span class=\"token operator\">&#8211;<\/span><span class=\"token number\">0.5f<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token operator\">&#8211;<\/span><span class=\"token number\">0.5f<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token number\">0.0f<\/span><span class=\"token punctuation\">,<\/span><br \/>\n    <span class=\"token number\">0.5f<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token operator\">&#8211;<\/span><span class=\"token number\">0.5f<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token number\">0.0f<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<h3>3. \u521d\u59cb\u5316 GLFW \u548c OpenGL \u4e0a\u4e0b\u6587<\/h3>\n<p><span class=\"token keyword\">int<\/span> <span class=\"token function\">main<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token comment\">\/\/ \u521d\u59cb\u5316 GLFW<\/span><br \/>\n    <span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token operator\">!<\/span><span class=\"token function\">glfwInit<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token function\">fprintf<\/span><span class=\"token punctuation\">(<\/span><span class=\"token constant\">stderr<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#034;Failed to initialize GLFW\\\\n&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token keyword\">return<\/span> <span class=\"token operator\">&#8211;<\/span><span class=\"token number\">1<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><\/p>\n<p>    <span class=\"token comment\">\/\/ \u521b\u5efa\u7a97\u53e3<\/span><br \/>\n    GLFWwindow<span class=\"token operator\">*<\/span> window <span class=\"token operator\">&#061;<\/span> <span class=\"token function\">glfwCreateWindow<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">800<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token number\">600<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#034;OpenGL VAO Example&#034;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token constant\">NULL<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token constant\">NULL<\/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>window<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token function\">fprintf<\/span><span class=\"token punctuation\">(<\/span><span class=\"token constant\">stderr<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#034;Failed to create GLFW window\\\\n&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token function\">glfwTerminate<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token keyword\">return<\/span> <span class=\"token operator\">&#8211;<\/span><span class=\"token number\">1<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><\/p>\n<p>    <span class=\"token comment\">\/\/ \u521b\u5efa OpenGL \u4e0a\u4e0b\u6587<\/span><br \/>\n    <span class=\"token function\">glfwMakeContextCurrent<\/span><span class=\"token punctuation\">(<\/span>window<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>    <span class=\"token comment\">\/\/ \u521d\u59cb\u5316 GLEW<\/span><br \/>\n    <span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token function\">glewInit<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">!&#061;<\/span> GLEW_OK<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token function\">fprintf<\/span><span class=\"token punctuation\">(<\/span><span class=\"token constant\">stderr<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#034;Failed to initialize GLEW\\\\n&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token keyword\">return<\/span> <span class=\"token operator\">&#8211;<\/span><span class=\"token number\">1<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><\/p>\n<h3>4. \u521b\u5efa\u548c\u914d\u7f6e VAO<\/h3>\n<p>    <span class=\"token comment\">\/\/ \u751f\u6210 VAO \u548c VBO<\/span><br \/>\n    GLuint vao<span class=\"token punctuation\">,<\/span> vbo<span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token function\">glGenVertexArrays<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">1<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token operator\">&amp;<\/span>vao<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token function\">glGenBuffers<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">1<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token operator\">&amp;<\/span>vbo<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>    <span class=\"token comment\">\/\/ \u7ed1\u5b9a VAO<\/span><br \/>\n    <span class=\"token function\">glBindVertexArray<\/span><span class=\"token punctuation\">(<\/span>vao<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>    <span class=\"token comment\">\/\/ \u7ed1\u5b9a VBO \u5e76\u4e0a\u4f20\u9876\u70b9\u6570\u636e<\/span><br \/>\n    <span class=\"token function\">glBindBuffer<\/span><span class=\"token punctuation\">(<\/span>GL_ARRAY_BUFFER<span class=\"token punctuation\">,<\/span> vbo<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token function\">glBufferData<\/span><span class=\"token punctuation\">(<\/span>GL_ARRAY_BUFFER<span class=\"token punctuation\">,<\/span> <span class=\"token keyword\">sizeof<\/span><span class=\"token punctuation\">(<\/span>vertices<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span> vertices<span class=\"token punctuation\">,<\/span> GL_STATIC_DRAW<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>    <span class=\"token comment\">\/\/ \u8bbe\u7f6e\u9876\u70b9\u5c5e\u6027\u6307\u9488<\/span><br \/>\n    <span class=\"token function\">glVertexAttribPointer<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">0<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token number\">3<\/span><span class=\"token punctuation\">,<\/span> GL_FLOAT<span class=\"token punctuation\">,<\/span> GL_FALSE<span class=\"token punctuation\">,<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token keyword\">void<\/span><span class=\"token operator\">*<\/span><span class=\"token punctuation\">)<\/span><span class=\"token number\">0<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token function\">glEnableVertexAttribArray<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">0<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>    <span class=\"token comment\">\/\/ \u89e3\u7ed1 VAO \u548c VBO<\/span><br \/>\n    <span class=\"token function\">glBindVertexArray<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">0<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token function\">glBindBuffer<\/span><span class=\"token punctuation\">(<\/span>GL_ARRAY_BUFFER<span class=\"token punctuation\">,<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<h3>5. \u6e32\u67d3\u5faa\u73af<\/h3>\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 operator\">!<\/span><span class=\"token function\">glfwWindowShouldClose<\/span><span class=\"token punctuation\">(<\/span>window<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token comment\">\/\/ \u6e05\u5c4f<\/span><br \/>\n        <span class=\"token function\">glClearColor<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">0.2f<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token number\">0.3f<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token number\">0.3f<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token number\">1.0f<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token function\">glClear<\/span><span class=\"token punctuation\">(<\/span>GL_COLOR_BUFFER_BIT<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>        <span class=\"token comment\">\/\/ \u7ed1\u5b9a VAO \u5e76\u6e32\u67d3<\/span><br \/>\n        <span class=\"token function\">glBindVertexArray<\/span><span class=\"token punctuation\">(<\/span>vao<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token function\">glDrawArrays<\/span><span class=\"token punctuation\">(<\/span>GL_TRIANGLES<span class=\"token punctuation\">,<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token number\">3<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token function\">glBindVertexArray<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">0<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>        <span class=\"token comment\">\/\/ \u4ea4\u6362\u7f13\u51b2<\/span><br \/>\n        <span class=\"token function\">glfwSwapBuffers<\/span><span class=\"token punctuation\">(<\/span>window<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token function\">glfwPollEvents<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><\/p>\n<h3>6. \u91ca\u653e\u8d44\u6e90\u5e76\u7ec8\u6b62 GLFW<\/h3>\n<p>    <span class=\"token comment\">\/\/ \u91ca\u653e\u8d44\u6e90<\/span><br \/>\n    <span class=\"token function\">glDeleteVertexArrays<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">1<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token operator\">&amp;<\/span>vao<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token function\">glDeleteBuffers<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">1<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token operator\">&amp;<\/span>vbo<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>    <span class=\"token comment\">\/\/ \u7ec8\u6b62 GLFW<\/span><br \/>\n    <span class=\"token function\">glfwTerminate<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token keyword\">return<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<h2>\u603b\u7ed3<\/h2>\n<p>\u901a\u8fc7\u672c\u6587&#xff0c;\u6211\u4eec\u4e86\u89e3\u4e86 OpenGL \u4e2d\u9876\u70b9\u6570\u7ec4\u5bf9\u8c61&#xff08;VAO&#xff09;\u7684\u6982\u5ff5\u3001API \u4f7f\u7528\u65b9\u6cd5&#xff0c;\u5e76\u901a\u8fc7\u4e00\u4e2a\u7b80\u5355\u7684\u793a\u4f8b\u4ee3\u7801\u5c55\u793a\u4e86\u5982\u4f55\u4f7f\u7528 VAO \u6765\u6e32\u67d3\u4e00\u4e2a\u4e09\u89d2\u5f62\u3002VAO \u7684\u5f15\u5165\u5927\u5927\u7b80\u5316\u4e86\u9876\u70b9\u6570\u636e\u7684\u7ba1\u7406&#xff0c;\u5e76\u63d0\u9ad8\u4e86\u6e32\u67d3\u6027\u80fd&#xff0c;\u662f\u73b0\u4ee3 OpenGL \u5f00\u53d1\u4e2d\u4e0d\u53ef\u6216\u7f3a\u7684\u4e00\u90e8\u5206\u3002\u5e0c\u671b\u672c\u6587\u80fd\u591f\u5e2e\u52a9\u4f60\u66f4\u597d\u5730\u7406\u89e3\u548c\u4f7f\u7528 VAO\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u6587\u7ae0\u6d4f\u89c8\u9605\u8bfb527\u6b21\uff0c\u70b9\u8d5e8\u6b21\uff0c\u6536\u85cf21\u6b21\u3002\u672c\u6587\u4ecb\u7ecd\u4e86OpenGL\u4e2d\u7684\u9876\u70b9\u6570\u7ec4\u5bf9\u8c61(VAO)\u53ca\u5176\u4f7f\u7528\u65b9\u6cd5\u3002VAO\u662fOpenGL 3.0\u5f15\u5165\u7684\u91cd\u8981\u7279\u6027\uff0c\u7528\u4e8e\u9ad8\u6548\u7ba1\u7406\u9876\u70b9\u6570\u636e\u3002\u6587\u7ae0\u8be6\u7ec6\u89e3\u91ca\u4e86VAO\u7684\u6982\u5ff5\u3001\u5de5\u4f5c\u539f\u7406\u548c\u4f18\u52bf\uff0c\u5305\u62ec\u51cf\u5c11API\u8c03\u7528\u6b21\u6570\u3001\u63d0\u9ad8\u6e32\u67d3\u6027\u80fd\u7b49\u3002\u901a\u8fc7\u5b8c\u6574\u7684\u4ee3\u7801\u793a\u4f8b\uff0c\u5c55\u793a\u4e86\u5982\u4f55\u751f\u6210\u3001\u7ed1\u5b9a\u548c\u914d\u7f6eVAO\uff0c\u4ee5\u53ca\u5982\u4f55\u5728\u6e32\u67d3\u5faa\u73af\u4e2d\u4f7f\u7528VAO\u7ed8\u5236\u4e09\u89d2\u5f62\u3002VAO\u901a\u8fc7\u5c06\u9876\u70b9\u5c5e\u6027\u914d\u7f6e\u96c6\u4e2d\u7ba1\u7406\uff0c\u663e\u8457\u7b80\u5316\u4e86\u4ee3\u7801\u5e76\u4f18\u5316\u4e86\u6027\u80fd\uff0c\u662f\u73b0\u4ee3OpenGL\u5f00\u53d1\u7684\u5173\u952e\u6280\u672f\u3002<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[2477,741,3244,190,125,427],"topic":[],"class_list":["post-53037","post","type-post","status-publish","format-standard","hentry","category-server","tag-3d","tag-opengl","tag-3244","tag-190","tag-125","tag-427"],"yoast_head":"<!-- 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