{"id":256,"date":"2018-01-02T16:35:12","date_gmt":"2018-01-02T08:35:12","guid":{"rendered":"http:\/\/www.yarpee.com\/?p=256"},"modified":"2018-01-02T16:43:19","modified_gmt":"2018-01-02T08:43:19","slug":"glcontext","status":"publish","type":"post","link":"http:\/\/www.yarpee.cn\/?p=256","title":{"rendered":"GlContext"},"content":{"rendered":"<div>GlContext\u662fbgfx\u91cc\u4f7f\u7528OpenGL\u7684\u6700\u5e95\u5c42\u7684\u5c01\u88c5\uff0c\u5b83\u7684\u5177\u4f53\u5b9e\u73b0\u67095\u79cd\u3002<\/div>\n<div><a href=\"http:\/\/www.yarpee.cn\/wp-content\/uploads\/2018\/01\/1.png\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-257\" src=\"http:\/\/www.yarpee.cn\/wp-content\/uploads\/2018\/01\/1.png\" alt=\"\" width=\"160\" height=\"196\" \/><\/a><\/div>\n<div>EGL\uff0c\u4e3b\u8981\u7528\u4e8eOpenGL ES &amp; Android<\/div>\n<div>WGL\uff0c\u4e3b\u8981\u7528\u4e8eOpenGL &amp; Windows<\/div>\n<div>GLX\uff0c\u4e3b\u8981\u7528\u4e8eOpenGL &amp; Linux<\/div>\n<div>EAGL\uff0c\u7528\u4e8eiOS<\/div>\n<div>NSGL\uff0c\u7528\u4e8eOS X<\/div>\n<div>\u8fd9\u91cc\u9009\u53d6EGL\u8fdb\u884c\u5206\u6790<\/div>\n<div><\/div>\n<div>eglOpen\u548ceglClose\u7528\u4e8e\u52a0\u8f7dlibEGL\u5e93\u5e76\u83b7\u53d6\u5bf9\u5e94\u7684\u51fd\u6570\u5730\u5740\uff0cbgfx\u901a\u8fc7BGFX_USE_GL_DYNAMIC_LIB\u5b8f\u652f\u6301\u52a8\u6001\u52a0\u8f7d\u6216\u9759\u6001\u94fe\u63a5\u3002<a href=\"https:\/\/www.khronos.org\/registry\/EGL\/sdk\/docs\/man\/html\/indexflat.php\">https:\/\/www.khronos.org\/registry\/EGL\/sdk\/docs\/man\/html\/indexflat.php<\/a><\/div>\n<div><\/div>\n<div>GlContext\u6700\u4e3b\u8981\u7684\u51fd\u6570\u662fcreate\uff0ccreate\u521d\u59cb\u5316EGL\uff0c\u521b\u5efaEGL\u7684Surface\u548cContext\uff1a<\/div>\n<div>eglGetDisplay\u83b7\u53d6\u4e00\u4e2aEGL display connection<\/div>\n<div>eglInitialize\u521d\u59cb\u5316\u8fd9\u4e2aEGL display connection\u5e76\u8fd4\u56deEGL\u7248\u672c\u53f7<\/div>\n<div>eglChooseConfig\u914d\u7f6e\u9700\u8981\u7684frame buffer\u5c5e\u6027\uff0cEGL\u8fd4\u56de\u6ee1\u8db3\u6761\u4ef6\u7684EGLConfig<\/div>\n<div>eglCreateWindowSurface\u200b\u6839\u636eEGLConfig\u521b\u5efa\u4e00\u4e2awindow surface<\/div>\n<div>eglCreateContext\u6839\u636eEGLConfig\u521b\u5efa\u4e00\u4e2arendering context<\/div>\n<div>eglMakeCurrent\u200b\u7ed1\u5b9acontext\u5230\u5f53\u524d\u7684\u6e32\u67d3\u7ebf\u7a0b\uff0c\u540c\u65f6\u7ed1\u5b9acontext\u5230\u521a\u521b\u5efa\u7684draw\/read surface<\/div>\n<div>eglSwapInterval\u6307\u5b9aeglSwapBuffers\u6700\u5c0f\u7684\u5237\u65b0\u5468\u671f\u4e3a0\uff0c\u9ed8\u8ba4\u4e3a1\u5373\u5f00\u542f\u5782\u76f4\u540c\u6b65\uff0c0\u4e3a\u53ea\u8981\u6e32\u67d3\u5b8c\u6210\u5c31\u5237\u65b0<\/div>\n<div>\u6700\u540e\u901a\u8fc7import\u52a0\u8f7dlibGLESv2\u5e93\u5e76\u83b7\u53d6OpenGL ES\u7684\u51fd\u6570\u5730\u5740\u4f9b\u4ee5\u540e\u8c03\u7528\uff0c\u81f3\u6b64\u4e00\u4e2aGIContext\u5c31\u521b\u5efa\u597d\u4e86\uff0c\u91cd\u8981\u7684\u6570\u636e\u90fd\u4fdd\u5b58\u5728\u6210\u5458\u53d8\u91cf\u91cc\u3002<\/div>\n<div><a href=\"http:\/\/www.yarpee.cn\/wp-content\/uploads\/2018\/01\/2.png\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-258\" src=\"http:\/\/www.yarpee.cn\/wp-content\/uploads\/2018\/01\/2.png\" alt=\"\" width=\"281\" height=\"102\" \/><\/a><\/div>\n<div>glcontext_egl.h\/.cpp\u91cc\u9664\u4e86GlContext\u5916\u8fd8\u6709\u4e00\u4e2aSwapChainGL\u7ed3\u6784\uff0c\u8fd9\u4e2a\u7ed3\u6784\u7528\u4e8e\u6839\u636eGlContext\u7684m_display\u548cm_config\u521b\u5efa\u65b0\u7684surface\u548ccontext\u3002<\/div>\n<div><a href=\"http:\/\/www.yarpee.cn\/wp-content\/uploads\/2018\/01\/3.png\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-259\" src=\"http:\/\/www.yarpee.cn\/wp-content\/uploads\/2018\/01\/3.png\" alt=\"\" width=\"813\" height=\"276\" srcset=\"http:\/\/www.yarpee.cn\/wp-content\/uploads\/2018\/01\/3.png 813w, http:\/\/www.yarpee.cn\/wp-content\/uploads\/2018\/01\/3-300x102.png 300w, http:\/\/www.yarpee.cn\/wp-content\/uploads\/2018\/01\/3-768x261.png 768w\" sizes=\"(max-width: 767px) 89vw, (max-width: 1000px) 54vw, (max-width: 1071px) 543px, 580px\" \/><\/a><\/div>\n","protected":false},"excerpt":{"rendered":"<p>GlContext\u662fbgfx\u91cc\u4f7f\u7528OpenGL\u7684\u6700\u5e95\u5c42\u7684\u5c01\u88c5\uff0c\u5b83\u7684\u5177\u4f53\u5b9e\u73b0\u67095\u79cd\u3002 EGL\uff0c\u4e3b\u8981\u7528\u4e8eOpenG &hellip; 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