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<html lang="en"> <head><meta charset="utf-8"><title>glReadPixels - OpenGL ES 3 - docs.gl</title><link rel="shortcut icon" href="/favicon.ico"><script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js"></script><link rel="stylesheet" href="../jquery-ui.css"><script src="https://ajax.googleapis.com/ajax/libs/jqueryui/1.11.1/jquery-ui.min.js"></script><script src="../jquery-bonsai/jquery.bonsai.js"></script><link href="../jquery-bonsai/jquery.bonsai.css" rel="stylesheet" type="text/css"><script src="../jquery-cookie/jquery.cookie.js"></script><script src="https://cdnjs.cloudflare.com/ajax/libs/mathjax/2.7.5/MathJax.js?config=MML_HTMLorMML"></script><link href="../style.css" rel="stylesheet" type="text/css"><link id="pagestyle" href="../style_light.css" rel="stylesheet" type="text/css"><script>
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  </script><script src="../docs.gl.search.js"></script><script src="../docs.gl.js"></script></head> <body> <div class="header-bg"> <div class="toggle-container"><a href="#" id="style_light">Light</a> | <a href="#" id="style_dark">Dark</a></div> <div class="header-container"> <div class="header-inner"> <a href="/"><h1 class="header-logo">docs.<span class="thicken">GL</span></h1></a> <input id="search" placeholder="search" size="50"><input id="search_button" type="submit" value="Go"> <span style="clear:both;"></span> </div> </div> </div> <div id="everything"> <div id="toc"> <div id="versions_container"> <select id="versions_dropdown"><option class="versions_option" value="gl21">OpenGL 2.1</option><option class="versions_option" value="gl30">OpenGL 3.0</option><option class="versions_option" value="gl31">OpenGL 3.1</option><option class="versions_option" value="gl32">OpenGL 3.2</option><option class="versions_option" value="gl33">OpenGL 3.3</option><option class="versions_option" value="gl40">OpenGL 4.0</option><option class="versions_option" value="gl41">OpenGL 4.1</option><option class="versions_option" value="gl42">OpenGL 4.2</option><option class="versions_option" value="gl43">OpenGL 4.3</option><option class="versions_option" value="gl44">OpenGL 4.4</option><option class="versions_option" value="gl45">OpenGL 4.5</option><option class="versions_option" value="es20">OpenGL ES 2.0</option><option class="versions_option" value="es30">OpenGL ES 3.0</option><option class="versions_option" value="es31" selected>OpenGL ES 3.1</option><option class="versions_option" value="sl40">GLSL 4.0</option><option class="versions_option" value="sl41">GLSL 4.1</option><option class="versions_option" value="sl42">GLSL 4.2</option><option class="versions_option" value="sl43">GLSL 4.3</option><option class="versions_option" value="sl44">GLSL 4.4</option><option class="versions_option" value="sl45">GLSL 4.5</option><option class="versions_option" value="el30">GLSL ES 3.0</option><option class="versions_option" value="el31">GLSL ES 3.1</option></select> </div> <input id="hide_deprecated" type="checkbox"> <label id="hide_label" for="hide_deprecated">Hide unavailable</label> <ul id="command_categories"><li class="category es20 es30 es31 gl20 gl21 gl30 gl31 gl32 gl33 gl40 gl41 gl42 gl43 gl44 gl45">Textures<ul><li><a class="rewritelink command es20 es30 es31 gl20 gl21 gl30 gl31 gl32 gl33 gl40 gl41 gl42 gl43 gl44 gl45">glActiveTexture</a></li><li><a class="rewritelink command es31 gl42 gl43 gl44 gl45">glBindImageTexture</a></li><li><a class="rewritelink command gl44 gl45">glBindImageTextures</a></li><li><a class="rewritelink command es20 es30 es31 gl20 gl21 gl30 gl31 gl32 gl33 gl40 gl41 gl42 gl43 gl44 gl45">glBindTexture</a></li><li><a class="rewritelink command gl45">glBindTextureUnit</a></li><li><a class="rewritelink command gl44 gl45">glBindTextures</a></li><li><a class="rewritelink command gl44 gl45">glClearTexImage</a></li><li><a class="rewritelink command gl44 gl45">glClearTexSubImage</a></li><li><a class="rewritelink command gl20 gl21 gl30 gl31 gl32 gl33 gl40 gl41 gl42 gl43 gl44 gl45">glCompressedTexImage1D</a></li><li><a class="rewritelink command es20 es30 es31 gl20 gl21 gl30 gl31 gl32 gl33 gl40 gl41 gl42 gl43 gl44 gl45">glCompressedTexImage2D</a></li><li><a class="rewritelink command es30 es31 gl20 gl21 gl30 gl31 gl32 gl33 gl40 gl41 gl42 gl43 gl44 gl45">glCompressedTexImage3D</a></li><li><a class="rewritelink command gl20 gl21 gl30 gl31 gl32 gl33 gl40 gl41 gl42 gl43 gl44 gl45 gl45">glCompressedTexSubImage1D</a></li><li><a class="rewritelink command es20 es30 es31 gl20 gl21 gl30 gl31 gl32 gl33 gl40 gl41 gl42 gl43 gl44 gl45 gl45">glCompressedTexSubImage2D</a></li><li><a class="rewritelink command es30 es31 gl20 gl21 gl30 gl31 gl32 gl33 gl40 gl41 gl42 gl43 gl44 gl45 gl45">glCompressedTexSubImage3D</a></li><li><a class="rewritelink command gl43 gl44 gl45">glCopyImageSubData</a></li><li><a class="rewritelink command gl20 gl21 gl30 gl31 gl32 gl33 gl40 gl41 gl42 gl43 gl44 gl45">glCopyTexImage1D</a></li><li><a class="rewritelink command es20 es30 es31 gl20 gl21 gl30 gl31 gl32 gl33 gl40 gl41 gl42 gl43 gl44 gl45">glCopyTexImage2D</a></li><li><a class="rewritelink command gl20 gl21 gl30 gl31 gl32 gl33 gl40 gl41 gl42 gl43 gl44 gl45 gl45">glCopyTexSubImage1D</a></li><li><a class="rewritelink command es20 es30 es31 gl20 gl21 gl30 gl31 gl32 gl33 gl40 gl41 gl42 gl43 gl44 gl45 gl45">glCopyTexSubImage2D</a></li><li><a class="rewritelink command es30 es31 gl20 gl21 gl30 gl31 gl32 gl33 gl40 gl41 gl42 gl43 gl44 gl45 gl45">glCopyTexSubImage3D</a></li><li><a class="rewritelink command gl45">glCreateTextures</a></li><li><a class="rewritelink command es20 es30 es31 gl20 gl21 gl30 gl31 gl32 gl33 gl40 gl41 gl42 gl43 gl44 gl45">glDeleteTextures</a></li><li><a class="rewritelink command es20 es30 es31 gl20 gl21 gl30 gl31 gl32 gl33 gl40 gl41 gl42 gl43 gl44 gl45">glGenTextures</a></li><li><a class="rewritelink command gl20 gl21 gl30 gl31 gl32 gl33 gl40 gl41 gl42 gl43 gl44 gl45 gl45 gl45">glGetCompressedTexImage</a></li><li><a class="rewritelink command gl45">glGetCompressedTextureSubImage</a></li><li><a class="rewritelink command gl20 gl21 gl30 gl31 gl32 gl33 gl40 gl41 gl42 gl43 gl44 gl45 gl45 gl45">glGetTexImage</a></li><li><a class="rewritelink command es31 es31 gl20 gl20 gl21 gl21 gl30 gl30 gl31 gl31 gl32 gl32 gl33 gl33 gl40 gl40 gl41 gl41 gl42 gl42 gl43 gl43 gl44 gl44 gl45 gl45 gl45 gl45">glGetTexLevelParameter</a></li><li><a class="rewritelink command es20 es20 es30 es30 es31 es31 gl20 gl20 gl21 gl21 gl30 gl30 gl30 gl30 gl31 gl31 gl31 gl31 gl32 gl32 gl32 gl32 gl33 gl33 gl33 gl33 gl40 gl40 gl40 gl40 gl41 gl41 gl41 gl41 gl42 gl42 gl42 gl42 gl43 gl43 gl43 gl43 gl44 gl44 gl44 gl44 gl45 gl45 gl45 gl45 gl45 gl45 gl45 gl45">glGetTexParameter</a></li><li><a class="rewritelink command gl45">glGetTextureSubImage</a></li><li><a class="rewritelink command gl43 gl44 gl45">glInvalidateTexImage</a></li><li><a class="rewritelink command gl43 gl44 gl45">glInvalidateTexSubImage</a></li><li><a class="rewritelink command es20 es30 es31 gl20 gl21 gl30 gl31 gl32 gl33 gl40 gl41 gl42 gl43 gl44 gl45">glIsTexture</a></li><li><a class="rewritelink command gl31 gl32 gl33 gl40 gl41 gl42 gl43 gl44 gl45 gl45">glTexBuffer</a></li><li><a class="rewritelink command gl43 gl44 gl45 gl45">glTexBufferRange</a></li><li><a class="rewritelink command gl20 gl21 gl30 gl31 gl32 gl33 gl40 gl41 gl42 gl43 gl44 gl45">glTexImage1D</a></li><li><a class="rewritelink command es20 es30 es31 gl20 gl21 gl30 gl31 gl32 gl33 gl40 gl41 gl42 gl43 gl44 gl45">glTexImage2D</a></li><li><a class="rewritelink command gl32 gl33 gl40 gl41 gl42 gl43 gl44 gl45">glTexImage2DMultisample</a></li><li><a class="rewritelink command es30 es31 gl20 gl21 gl30 gl31 gl32 gl33 gl40 gl41 gl42 gl43 gl44 gl45">glTexImage3D</a></li><li><a class="rewritelink command gl32 gl33 gl40 gl41 gl42 gl43 gl44 gl45">glTexImage3DMultisample</a></li><li><a class="rewritelink command es20 es20 es20 es20 es30 es30 es30 es30 es31 es31 es31 es31 gl20 gl20 gl20 gl20 gl21 gl21 gl21 gl21 gl30 gl30 gl30 gl30 gl30 gl30 gl31 gl31 gl31 gl31 gl31 gl31 gl32 gl32 gl32 gl32 gl32 gl32 gl33 gl33 gl33 gl33 gl33 gl33 gl40 gl40 gl40 gl40 gl40 gl40 gl41 gl41 gl41 gl41 gl41 gl41 gl42 gl42 gl42 gl42 gl42 gl42 gl43 gl43 gl43 gl43 gl43 gl43 gl44 gl44 gl44 gl44 gl44 gl44 gl45 gl45 gl45 gl45 gl45 gl45 gl45 gl45 gl45 gl45 gl45 gl45">glTexParameter</a></li><li><a class="rewritelink command gl42 gl43 gl44 gl45 gl45">glTexStorage1D</a></li><li><a class="rewritelink command es30 es31 gl42 gl43 gl44 gl45 gl45">glTexStorage2D</a></li><li><a class="rewritelink command es31 gl43 gl44 gl45 gl45">glTexStorage2DMultisample</a></li><li><a class="rewritelink command es30 es31 gl42 gl43 gl44 gl45 gl45">glTexStorage3D</a></li><li><a class="rewritelink command gl43 gl44 gl45 gl45">glTexStorage3DMultisample</a></li><li><a class="rewritelink command gl20 gl21 gl30 gl31 gl32 gl33 gl40 gl41 gl42 gl43 gl44 gl45 gl45">glTexSubImage1D</a></li><li><a class="rewritelink command es20 es30 es31 gl20 gl21 gl30 gl31 gl32 gl33 gl40 gl41 gl42 gl43 gl44 gl45 gl45">glTexSubImage2D</a></li><li><a class="rewritelink command es30 es31 gl20 gl21 gl30 gl31 gl32 gl33 gl40 gl41 gl42 gl43 gl44 gl45 gl45">glTexSubImage3D</a></li><li><a class="rewritelink command gl43 gl44 gl45">glTextureView</a></li></ul></li><li class="category open_me es20 es30 es31 gl20 gl21 gl30 gl31 gl32 gl33 gl40 gl41 gl42 gl43 gl44 gl45">Rendering<ul><li><a class="rewritelink command es20 es30 es31 gl20 gl21 gl30 gl31 gl32 gl33 gl40 gl41 gl42 gl43 gl44 gl45">glClear</a></li><li><a class="rewritelink command es30 es30 es30 es30 es31 es31 es31 es31 gl30 gl30 gl30 gl30 gl31 gl31 gl31 gl31 gl32 gl32 gl32 gl32 gl33 gl33 gl33 gl33 gl40 gl40 gl40 gl40 gl41 gl41 gl41 gl41 gl42 gl42 gl42 gl42 gl43 gl43 gl43 gl43 gl44 gl44 gl44 gl44 gl45 gl45 gl45 gl45 gl45 gl45 gl45 gl45">glClearBuffer</a></li><li><a class="rewritelink command es20 es30 es31 gl20 gl21 gl30 gl31 gl32 gl33 gl40 gl41 gl42 gl43 gl44 gl45">glClearColor</a></li><li><a class="rewritelink command gl20 gl21 gl30 gl31 gl32 gl33 gl40 gl41 gl41 gl42 gl42 gl43 gl43 gl44 gl44 gl45 gl45">glClearDepth</a></li><li><a class="rewritelink command es20 es30 es31">glClearDepthf</a></li><li><a class="rewritelink command es20 es30 es31 gl20 gl21 gl30 gl31 gl32 gl33 gl40 gl41 gl42 gl43 gl44 gl45">glClearStencil</a></li><li><a class="rewritelink command gl20 gl21 gl30 gl31 gl32 gl33 gl40 gl41 gl42 gl43 gl44 gl45 gl45">glDrawBuffer</a></li><li><a class="rewritelink command es20 es30 es31 gl20 gl21 gl30 gl31 gl32 gl33 gl40 gl41 gl42 gl43 gl44 gl45">glFinish</a></li><li><a class="rewritelink command es20 es30 es31 gl20 gl21 gl30 gl31 gl32 gl33 gl40 gl41 gl42 gl43 gl44 gl45">glFlush</a></li><li><a class="rewritelink command es30 es31 gl20 gl21 gl30 gl31 gl32 gl33 gl40 gl41 gl42 gl43 gl44 gl45 gl45">glReadBuffer</a></li><li><a class="rewritelink command current es20 es30 es31 gl20 gl21 gl30 gl31 gl32 gl33 gl40 gl41 gl42 gl43 gl44 gl45 gl45">glReadPixels</a></li></ul></li><li class="category es20 es30 es31 gl30 gl31 gl32 gl33 gl40 gl41 gl42 gl43 gl44 gl45 gl20 gl21">Frame Buffers<ul><li><a class="rewritelink command es20 es30 es31 gl30 gl31 gl32 gl33 gl40 gl41 gl42 gl43 gl44 gl45">glBindFramebuffer</a></li><li><a class="rewritelink command es20 es30 es31 gl30 gl31 gl32 gl33 gl40 gl41 gl42 gl43 gl44 gl45">glBindRenderbuffer</a></li><li><a class="rewritelink command es30 es31 gl30 gl31 gl32 gl33 gl40 gl41 gl42 gl43 gl44 gl45 gl45">glBlitFramebuffer</a></li><li><a class="rewritelink command es20 es30 es31 gl30 gl31 gl32 gl33 gl40 gl41 gl42 gl43 gl44 gl45 gl45">glCheckFramebufferStatus</a></li><li><a class="rewritelink command gl45">glCreateFramebuffers</a></li><li><a class="rewritelink command gl45">glCreateRenderbuffers</a></li><li><a class="rewritelink command es20 es30 es31 gl30 gl31 gl32 gl33 gl40 gl41 gl42 gl43 gl44 gl45">glDeleteFramebuffers</a></li><li><a class="rewritelink command es20 es30 es31 gl30 gl31 gl32 gl33 gl40 gl41 gl42 gl43 gl44 gl45">glDeleteRenderbuffers</a></li><li><a class="rewritelink command es30 es31 gl20 gl21 gl30 gl31 gl32 gl33 gl40 gl41 gl42 gl43 gl44 gl45 gl45">glDrawBuffers</a></li><li><a class="rewritelink command es31 gl43 gl44 gl45 gl45">glFramebufferParameteri</a></li><li><a class="rewritelink command es20 es30 es31 gl30 gl31 gl32 gl33 gl40 gl41 gl42 gl43 gl44 gl45 gl45">glFramebufferRenderbuffer</a></li><li><a class="rewritelink command gl30 gl30 gl30 gl31 gl31 gl31 gl32 gl32 gl32 gl33 gl33 gl33 gl40 gl40 gl40 gl41 gl41 gl41 gl42 gl42 gl42 gl43 gl43 gl43 gl44 gl44 gl44 gl45 gl45 gl45 gl45">glFramebufferTexture</a></li><li><a class="rewritelink command es20 es30 es31">glFramebufferTexture2D</a></li><li><a class="rewritelink command es30 es31 gl30 gl31 gl32 gl33 gl40 gl41 gl42 gl43 gl44 gl45 gl45">glFramebufferTextureLayer</a></li><li><a class="rewritelink command es20 es30 es31 gl30 gl31 gl32 gl33 gl40 gl41 gl42 gl43 gl44 gl45">glGenFramebuffers</a></li><li><a class="rewritelink command es20 es30 es31 gl30 gl31 gl32 gl33 gl40 gl41 gl42 gl43 gl44 gl45">glGenRenderbuffers</a></li><li><a class="rewritelink command es20 es30 es31 gl30 gl31 gl32 gl33 gl40 gl41 gl42 gl43 gl44 gl45 gl45">glGenerateMipmap</a></li><li><a class="rewritelink command gl30 gl31 gl32 gl33 gl40 gl41 gl42 gl43 gl44 gl45 gl45">glGetFramebufferAttachmentParameter</a></li><li><a class="rewritelink command es20 es30 es31">glGetFramebufferAttachmentParameteriv</a></li><li><a class="rewritelink command gl43 gl44 gl45">glGetFramebufferParameter</a></li><li><a class="rewritelink command es31">glGetFramebufferParameteriv</a></li><li><a class="rewritelink command gl30 gl31 gl32 gl33 gl40 gl41 gl42 gl43 gl44 gl45 gl45">glGetRenderbufferParameter</a></li><li><a class="rewritelink command es20 es30 es31">glGetRenderbufferParameteriv</a></li><li><a class="rewritelink command es30 es31 gl43 gl44 gl45 gl45 gl45">glInvalidateFramebuffer</a></li><li><a class="rewritelink command es30 es31 gl43 gl44 gl45">glInvalidateSubFramebuffer</a></li><li><a class="rewritelink command es20 es30 es31 gl30 gl31 gl32 gl33 gl40 gl41 gl42 gl43 gl44 gl45">glIsFramebuffer</a></li><li><a class="rewritelink command es20 es30 es31 gl30 gl31 gl32 gl33 gl40 gl41 gl42 gl43 gl44 gl45">glIsRenderbuffer</a></li><li><a class="rewritelink command es20 es30 es31 gl30 gl31 gl32 gl33 gl40 gl41 gl42 gl43 gl44 gl45 gl45">glRenderbufferStorage</a></li><li><a class="rewritelink command es30 es31 gl30 gl31 gl32 gl33 gl40 gl41 gl42 gl43 gl44 gl45 gl45">glRenderbufferStorageMultisample</a></li><li><a class="rewritelink command es31 gl32 gl33 gl40 gl41 gl42 gl43 gl44 gl45">glSampleMaski</a></li></ul></li><li class="category es20 es30 es31 gl20 gl21 gl30 gl31 gl32 gl33 gl40 gl41 gl42 gl43 gl44 gl45">Shaders<ul><li><a class="rewritelink command es20 es30 es31 gl20 gl21 gl30 gl31 gl32 gl33 gl40 gl41 gl42 gl43 gl44 gl45">glAttachShader</a></li><li><a class="rewritelink command es20 es30 es31 gl20 gl21 gl30 gl31 gl32 gl33 gl40 gl41 gl42 gl43 gl44 gl45">glBindAttribLocation</a></li><li><a class="rewritelink command gl30 gl31 gl32 gl33 gl40 gl41 gl42 gl43 gl44 gl45">glBindFragDataLocation</a></li><li><a class="rewritelink command gl33 gl40 gl41 gl42 gl43 gl44 gl45">glBindFragDataLocationIndexed</a></li><li><a class="rewritelink command es20 es30 es31 gl20 gl21 gl30 gl31 gl32 gl33 gl40 gl41 gl42 gl43 gl44 gl45">glCompileShader</a></li><li><a class="rewritelink command es20 es30 es31 gl20 gl21 gl30 gl31 gl32 gl33 gl40 gl41 gl42 gl43 gl44 gl45">glCreateProgram</a></li><li><a class="rewritelink command es20 es30 es31 gl20 gl21 gl30 gl31 gl32 gl33 gl40 gl41 gl42 gl43 gl44 gl45">glCreateShader</a></li><li><a class="rewritelink command es31 gl41 gl42 gl43 gl44 gl45">glCreateShaderProgram</a></li><li><a class="rewritelink command es20 es30 es31 gl20 gl21 gl30 gl31 gl32 gl33 gl40 gl41 gl42 gl43 gl44 gl45">glDeleteProgram</a></li><li><a class="rewritelink command es20 es30 es31 gl20 gl21 gl30 gl31 gl32 gl33 gl40 gl41 gl42 gl43 gl44 gl45">glDeleteShader</a></li><li><a class="rewritelink command es20 es30 es31 gl20 gl21 gl30 gl31 gl32 gl33 gl40 gl41 gl42 gl43 gl44 gl45">glDetachShader</a></li><li><a class="rewritelink command gl42 gl43 gl44 gl45">glGetActiveAtomicCounterBufferiv</a></li><li><a class="rewritelink command es20 es30 es31 gl20 gl21 gl30 gl31 gl32 gl33 gl40 gl41 gl42 gl43 gl44 gl45">glGetActiveAttrib</a></li><li><a class="rewritelink command gl40 gl41 gl42 gl43 gl44 gl45">glGetActiveSubroutineName</a></li><li><a class="rewritelink command gl40 gl41 gl42 gl43 gl44 gl45">glGetActiveSubroutineUniform</a></li><li><a class="rewritelink command gl40 gl41 gl42 gl43 gl44 gl45">glGetActiveSubroutineUniformName</a></li><li><a class="rewritelink command es20 es30 es31 gl20 gl21 gl30 gl31 gl32 gl33 gl40 gl41 gl42 gl43 gl44 gl45">glGetActiveUniform</a></li><li><a class="rewritelink command gl31 gl32 gl33 gl40 gl41 gl42 gl43 gl44 gl45">glGetActiveUniformBlock</a></li><li><a class="rewritelink command es30 es31 gl31 gl32 gl33 gl40 gl41 gl42 gl43 gl44 gl45">glGetActiveUniformBlockName</a></li><li><a class="rewritelink command es30 es31">glGetActiveUniformBlockiv</a></li><li><a class="rewritelink command gl31 gl32 gl33 gl40 gl41 gl42 gl43 gl44 gl45">glGetActiveUniformName</a></li><li><a class="rewritelink command es30 es31 gl31 gl32 gl33 gl40 gl41 gl42 gl43 gl44 gl45">glGetActiveUniformsiv</a></li><li><a class="rewritelink command es20 es30 es31 gl20 gl21 gl30 gl31 gl32 gl33 gl40 gl41 gl42 gl43 gl44 gl45">glGetAttachedShaders</a></li><li><a class="rewritelink command es20 es30 es31 gl20 gl21 gl30 gl31 gl32 gl33 gl40 gl41 gl42 gl43 gl44 gl45">glGetAttribLocation</a></li><li><a class="rewritelink command gl33 gl40 gl41 gl42 gl43 gl44 gl45">glGetFragDataIndex</a></li><li><a class="rewritelink command es30 es31 gl30 gl31 gl32 gl33 gl40 gl41 gl42 gl43 gl44 gl45">glGetFragDataLocation</a></li><li><a class="rewritelink command gl20 gl21 gl30 gl31 gl32 gl33 gl40 gl41 gl42 gl43 gl44 gl45">glGetProgram</a></li><li><a class="rewritelink command es30 es31 gl41 gl42 gl43 gl44 gl45">glGetProgramBinary</a></li><li><a class="rewritelink command es20 es30 es31 gl20 gl21 gl30 gl31 gl32 gl33 gl40 gl41 gl42 gl43 gl44 gl45">glGetProgramInfoLog</a></li><li><a class="rewritelink command es31 gl43 gl44 gl45">glGetProgramResource</a></li><li><a class="rewritelink command es31 gl43 gl44 gl45">glGetProgramResourceIndex</a></li><li><a class="rewritelink command es31 gl43 gl44 gl45">glGetProgramResourceLocation</a></li><li><a class="rewritelink command gl43 gl44 gl45">glGetProgramResourceLocationIndex</a></li><li><a class="rewritelink command es31 gl43 gl44 gl45">glGetProgramResourceName</a></li><li><a class="rewritelink command gl40 gl41 gl42 gl43 gl44 gl45">glGetProgramStage</a></li><li><a class="rewritelink command es20 es30 es31">glGetProgramiv</a></li><li><a class="rewritelink command gl20 gl21 gl30 gl31 gl32 gl33 gl40 gl41 gl42 gl43 gl44 gl45">glGetShader</a></li><li><a class="rewritelink command es20 es30 es31 gl20 gl21 gl30 gl31 gl32 gl33 gl40 gl41 gl42 gl43 gl44 gl45">glGetShaderInfoLog</a></li><li><a class="rewritelink command es20 es30 es31 gl41 gl42 gl43 gl44 gl45">glGetShaderPrecisionFormat</a></li><li><a class="rewritelink command es20 es30 es31 gl20 gl21 gl30 gl31 gl32 gl33 gl40 gl41 gl42 gl43 gl44 gl45">glGetShaderSource</a></li><li><a class="rewritelink command es20 es30 es31">glGetShaderiv</a></li><li><a class="rewritelink command gl40 gl41 gl42 gl43 gl44 gl45">glGetSubroutineIndex</a></li><li><a class="rewritelink command gl40 gl41 gl42 gl43 gl44 gl45">glGetSubroutineUniformLocation</a></li><li><a class="rewritelink command es20 es20 es30 es30 es30 es31 es31 es31 gl20 gl20 gl21 gl21 gl30 gl30 gl30 gl31 gl31 gl31 gl32 gl32 gl32 gl33 gl33 gl33 gl40 gl40 gl40 gl40 gl41 gl41 gl41 gl41 gl42 gl42 gl42 gl42 gl43 gl43 gl43 gl43 gl44 gl44 gl44 gl44 gl45 gl45 gl45 gl45 gl45 gl45 gl45 gl45">glGetUniform</a></li><li><a class="rewritelink command es30 es31 gl31 gl32 gl33 gl40 gl41 gl42 gl43 gl44 gl45">glGetUniformBlockIndex</a></li><li><a class="rewritelink command es30 es31 gl31 gl32 gl33 gl40 gl41 gl42 gl43 gl44 gl45">glGetUniformIndices</a></li><li><a class="rewritelink command es20 es30 es31 gl20 gl21 gl30 gl31 gl32 gl33 gl40 gl41 gl42 gl43 gl44 gl45">glGetUniformLocation</a></li><li><a class="rewritelink command gl40 gl41 gl42 gl43 gl44 gl45">glGetUniformSubroutine</a></li><li><a class="rewritelink command es20 es30 es31 gl20 gl21 gl30 gl31 gl32 gl33 gl40 gl41 gl42 gl43 gl44 gl45">glIsProgram</a></li><li><a class="rewritelink command es20 es30 es31 gl20 gl21 gl30 gl31 gl32 gl33 gl40 gl41 gl42 gl43 gl44 gl45">glIsShader</a></li><li><a class="rewritelink command es20 es30 es31 gl20 gl21 gl30 gl31 gl32 gl33 gl40 gl41 gl42 gl43 gl44 gl45">glLinkProgram</a></li><li><a class="rewritelink command gl40 gl41 gl42 gl43 gl44 gl45">glMinSampleShading</a></li><li><a class="rewritelink command es30 es31 gl41 gl42 gl43 gl44 gl45">glProgramBinary</a></li><li><a class="rewritelink command gl41 gl42 gl43 gl44 gl45">glProgramParameter</a></li><li><a class="rewritelink command es30 es31">glProgramParameteri</a></li><li><a class="rewritelink command es31 es31 es31 es31 es31 es31 es31 es31 es31 es31 es31 es31 es31 es31 es31 es31 es31 es31 es31 es31 es31 es31 es31 es31 es31 es31 es31 es31 es31 es31 es31 es31 es31 gl41 gl41 gl41 gl41 gl41 gl41 gl41 gl41 gl41 gl41 gl41 gl41 gl41 gl41 gl41 gl41 gl41 gl41 gl41 gl41 gl41 gl41 gl41 gl41 gl41 gl41 gl41 gl41 gl41 gl41 gl41 gl41 gl41 gl41 gl41 gl41 gl41 gl41 gl41 gl41 gl41 gl41 gl41 gl41 gl41 gl41 gl41 gl41 gl41 gl41 gl42 gl42 gl42 gl42 gl42 gl42 gl42 gl42 gl42 gl42 gl42 gl42 gl42 gl42 gl42 gl42 gl42 gl42 gl42 gl42 gl42 gl42 gl42 gl42 gl42 gl42 gl42 gl42 gl42 gl42 gl42 gl42 gl42 gl42 gl42 gl42 gl42 gl42 gl42 gl42 gl42 gl42 gl42 gl42 gl42 gl42 gl42 gl42 gl42 gl42 gl43 gl43 gl43 gl43 gl43 gl43 gl43 gl43 gl43 gl43 gl43 gl43 gl43 gl43 gl43 gl43 gl43 gl43 gl43 gl43 gl43 gl43 gl43 gl43 gl43 gl43 gl43 gl43 gl43 gl43 gl43 gl43 gl43 gl43 gl43 gl43 gl43 gl43 gl43 gl43 gl43 gl43 gl43 gl43 gl43 gl43 gl43 gl43 gl43 gl43 gl44 gl44 gl44 gl44 gl44 gl44 gl44 gl44 gl44 gl44 gl44 gl44 gl44 gl44 gl44 gl44 gl44 gl44 gl44 gl44 gl44 gl44 gl44 gl44 gl44 gl44 gl44 gl44 gl44 gl44 gl44 gl44 gl44 gl44 gl44 gl44 gl44 gl44 gl44 gl44 gl44 gl44 gl44 gl44 gl44 gl44 gl44 gl44 gl44 gl44 gl45 gl45 gl45 gl45 gl45 gl45 gl45 gl45 gl45 gl45 gl45 gl45 gl45 gl45 gl45 gl45 gl45 gl45 gl45 gl45 gl45 gl45 gl45 gl45 gl45 gl45 gl45 gl45 gl45 gl45 gl45 gl45 gl45 gl45 gl45 gl45 gl45 gl45 gl45 gl45 gl45 gl45 gl45 gl45 gl45 gl45 gl45 gl45 gl45 gl45">glProgramUniform</a></li><li><a class="rewritelink command es20 es30 es31 gl41 gl42 gl43 gl44 gl45">glReleaseShaderCompiler</a></li><li><a class="rewritelink command es20 es30 es31 gl41 gl42 gl43 gl44 gl45">glShaderBinary</a></li><li><a class="rewritelink command es20 es30 es31 gl20 gl21 gl30 gl31 gl32 gl33 gl40 gl41 gl42 gl43 gl44 gl45">glShaderSource</a></li><li><a class="rewritelink command gl43 gl44 gl45">glShaderStorageBlockBinding</a></li><li><a class="rewritelink command es20 es20 es20 es20 es20 es20 es20 es20 es20 es20 es20 es20 es20 es20 es20 es20 es20 es20 es20 es30 es30 es30 es30 es30 es30 es30 es30 es30 es30 es30 es30 es30 es30 es30 es30 es30 es30 es30 es30 es30 es30 es30 es30 es30 es30 es30 es30 es30 es30 es30 es30 es30 es31 es31 es31 es31 es31 es31 es31 es31 es31 es31 es31 es31 es31 es31 es31 es31 es31 es31 es31 es31 es31 es31 es31 es31 es31 es31 es31 es31 es31 es31 es31 es31 es31 gl20 gl20 gl20 gl20 gl20 gl20 gl20 gl20 gl20 gl20 gl20 gl20 gl20 gl20 gl20 gl20 gl20 gl20 gl20 gl21 gl21 gl21 gl21 gl21 gl21 gl21 gl21 gl21 gl21 gl21 gl21 gl21 gl21 gl21 gl21 gl21 gl21 gl21 gl21 gl21 gl21 gl21 gl21 gl21 gl30 gl30 gl30 gl30 gl30 gl30 gl30 gl30 gl30 gl30 gl30 gl30 gl30 gl30 gl30 gl30 gl30 gl30 gl30 gl30 gl30 gl30 gl30 gl30 gl30 gl30 gl30 gl30 gl30 gl30 gl30 gl30 gl30 gl31 gl31 gl31 gl31 gl31 gl31 gl31 gl31 gl31 gl31 gl31 gl31 gl31 gl31 gl31 gl31 gl31 gl31 gl31 gl31 gl31 gl31 gl31 gl31 gl31 gl31 gl31 gl31 gl31 gl31 gl31 gl31 gl31 gl32 gl32 gl32 gl32 gl32 gl32 gl32 gl32 gl32 gl32 gl32 gl32 gl32 gl32 gl32 gl32 gl32 gl32 gl32 gl32 gl32 gl32 gl32 gl32 gl32 gl32 gl32 gl32 gl32 gl32 gl32 gl32 gl32 gl33 gl33 gl33 gl33 gl33 gl33 gl33 gl33 gl33 gl33 gl33 gl33 gl33 gl33 gl33 gl33 gl33 gl33 gl33 gl33 gl33 gl33 gl33 gl33 gl33 gl33 gl33 gl33 gl33 gl33 gl33 gl33 gl33 gl40 gl40 gl40 gl40 gl40 gl40 gl40 gl40 gl40 gl40 gl40 gl40 gl40 gl40 gl40 gl40 gl40 gl40 gl40 gl40 gl40 gl40 gl40 gl40 gl40 gl40 gl40 gl40 gl40 gl40 gl40 gl40 gl40 gl40 gl40 gl40 gl40 gl40 gl40 gl40 gl40 gl40 gl40 gl40 gl40 gl40 gl40 gl40 gl40 gl40 gl41 gl41 gl41 gl41 gl41 gl41 gl41 gl41 gl41 gl41 gl41 gl41 gl41 gl41 gl41 gl41 gl41 gl41 gl41 gl41 gl41 gl41 gl41 gl41 gl41 gl41 gl41 gl41 gl41 gl41 gl41 gl41 gl41 gl41 gl41 gl41 gl41 gl41 gl41 gl41 gl41 gl41 gl41 gl41 gl41 gl41 gl41 gl41 gl41 gl41 gl42 gl42 gl42 gl42 gl42 gl42 gl42 gl42 gl42 gl42 gl42 gl42 gl42 gl42 gl42 gl42 gl42 gl42 gl42 gl42 gl42 gl42 gl42 gl42 gl42 gl42 gl42 gl42 gl42 gl42 gl42 gl42 gl42 gl42 gl42 gl42 gl42 gl42 gl42 gl42 gl42 gl42 gl42 gl42 gl42 gl42 gl42 gl42 gl42 gl42 gl43 gl43 gl43 gl43 gl43 gl43 gl43 gl43 gl43 gl43 gl43 gl43 gl43 gl43 gl43 gl43 gl43 gl43 gl43 gl43 gl43 gl43 gl43 gl43 gl43 gl43 gl43 gl43 gl43 gl43 gl43 gl43 gl43 gl43 gl43 gl43 gl43 gl43 gl43 gl43 gl43 gl43 gl43 gl43 gl43 gl43 gl43 gl43 gl43 gl43 gl44 gl44 gl44 gl44 gl44 gl44 gl44 gl44 gl44 gl44 gl44 gl44 gl44 gl44 gl44 gl44 gl44 gl44 gl44 gl44 gl44 gl44 gl44 gl44 gl44 gl44 gl44 gl44 gl44 gl44 gl44 gl44 gl44 gl44 gl44 gl44 gl44 gl44 gl44 gl44 gl44 gl44 gl44 gl44 gl44 gl44 gl44 gl44 gl44 gl44 gl45 gl45 gl45 gl45 gl45 gl45 gl45 gl45 gl45 gl45 gl45 gl45 gl45 gl45 gl45 gl45 gl45 gl45 gl45 gl45 gl45 gl45 gl45 gl45 gl45 gl45 gl45 gl45 gl45 gl45 gl45 gl45 gl45 gl45 gl45 gl45 gl45 gl45 gl45 gl45 gl45 gl45 gl45 gl45 gl45 gl45 gl45 gl45 gl45 gl45">glUniform</a></li><li><a class="rewritelink command es30 es31 gl31 gl32 gl33 gl40 gl41 gl42 gl43 gl44 gl45">glUniformBlockBinding</a></li><li><a class="rewritelink command gl40 gl41 gl42 gl43 gl44 gl45">glUniformSubroutines</a></li><li><a class="rewritelink command es20 es30 es31 gl20 gl21 gl30 gl31 gl32 gl33 gl40 gl41 gl42 gl43 gl44 gl45">glUseProgram</a></li><li><a class="rewritelink command es31 gl41 gl42 gl43 gl44 gl45">glUseProgramStages</a></li><li><a class="rewritelink command es20 es30 es31 gl20 gl21 gl30 gl31 gl32 gl33 gl40 gl41 gl42 gl43 gl44 gl45">glValidateProgram</a></li></ul></li><li class="category es20 es30 es31 gl20 gl21 gl30 gl31 gl32 gl33 gl40 gl41 gl42 gl43 gl44 gl45">Buffer Objects<ul><li><a class="rewritelink command es20 es30 es31 gl20 gl21 gl30 gl31 gl32 gl33 gl40 gl41 gl42 gl43 gl44 gl45">glBindBuffer</a></li><li><a class="rewritelink command es30 es31 gl30 gl31 gl32 gl33 gl40 gl41 gl42 gl43 gl44 gl45">glBindBufferBase</a></li><li><a class="rewritelink command es30 es31 gl30 gl31 gl32 gl33 gl40 gl41 gl42 gl43 gl44 gl45">glBindBufferRange</a></li><li><a class="rewritelink command gl44 gl45">glBindBuffersBase</a></li><li><a class="rewritelink command gl44 gl45">glBindBuffersRange</a></li><li><a class="rewritelink command es31 gl43 gl44 gl45 gl45">glBindVertexBuffer</a></li><li><a class="rewritelink command gl44 gl45 gl45">glBindVertexBuffers</a></li><li><a class="rewritelink command es20 es30 es31 gl20 gl21 gl30 gl31 gl32 gl33 gl40 gl41 gl42 gl43 gl44 gl45 gl45">glBufferData</a></li><li><a class="rewritelink command gl44 gl45 gl45">glBufferStorage</a></li><li><a class="rewritelink command es20 es30 es31 gl20 gl21 gl30 gl31 gl32 gl33 gl40 gl41 gl42 gl43 gl44 gl45 gl45">glBufferSubData</a></li><li><a class="rewritelink command gl43 gl44 gl45 gl45">glClearBufferData</a></li><li><a class="rewritelink command gl43 gl44 gl45 gl45">glClearBufferSubData</a></li><li><a class="rewritelink command es30 es31 gl31 gl32 gl33 gl40 gl41 gl42 gl43 gl44 gl45 gl45">glCopyBufferSubData</a></li><li><a class="rewritelink command gl45">glCreateBuffers</a></li><li><a class="rewritelink command gl45">glCreateVertexArrays</a></li><li><a class="rewritelink command es20 es30 es31 gl20 gl21 gl30 gl31 gl32 gl33 gl40 gl41 gl42 gl43 gl44 gl45">glDeleteBuffers</a></li><li><a class="rewritelink command es20 es30 es31 gl20 gl21 gl30 gl31 gl32 gl33 gl40 gl41 gl42 gl43 gl44 gl45 gl45">glDisableVertexAttribArray</a></li><li><a class="rewritelink command es20 es30 es31 gl20 gl21 gl30 gl31 gl32 gl33 gl40 gl41 gl42 gl43 gl44 gl45">glDrawArrays</a></li><li><a class="rewritelink command es31 gl40 gl41 gl42 gl43 gl44 gl45">glDrawArraysIndirect</a></li><li><a class="rewritelink command es30 es31 gl31 gl32 gl33 gl40 gl41 gl42 gl43 gl44 gl45">glDrawArraysInstanced</a></li><li><a class="rewritelink command gl42 gl43 gl44 gl45">glDrawArraysInstancedBaseInstance</a></li><li><a class="rewritelink command es20 es30 es31 gl20 gl21 gl30 gl31 gl32 gl33 gl40 gl41 gl42 gl43 gl44 gl45">glDrawElements</a></li><li><a class="rewritelink command gl32 gl33 gl40 gl41 gl42 gl43 gl44 gl45">glDrawElementsBaseVertex</a></li><li><a class="rewritelink command es31 gl40 gl41 gl42 gl43 gl44 gl45">glDrawElementsIndirect</a></li><li><a class="rewritelink command es30 es31 gl31 gl32 gl33 gl40 gl41 gl42 gl43 gl44 gl45">glDrawElementsInstanced</a></li><li><a class="rewritelink command gl42 gl43 gl44 gl45">glDrawElementsInstancedBaseInstance</a></li><li><a class="rewritelink command gl32 gl33 gl40 gl41 gl42 gl43 gl44 gl45">glDrawElementsInstancedBaseVertex</a></li><li><a class="rewritelink command gl42 gl43 gl44 gl45">glDrawElementsInstancedBaseVertexBaseInstance</a></li><li><a class="rewritelink command es30 es31 gl20 gl21 gl30 gl31 gl32 gl33 gl40 gl41 gl42 gl43 gl44 gl45">glDrawRangeElements</a></li><li><a class="rewritelink command gl32 gl33 gl40 gl41 gl42 gl43 gl44 gl45">glDrawRangeElementsBaseVertex</a></li><li><a class="rewritelink command es20 es30 es31 gl20 gl21 gl30 gl31 gl32 gl33 gl40 gl41 gl42 gl43 gl44 gl45 gl45">glEnableVertexAttribArray</a></li><li><a class="rewritelink command es30 es31 gl30 gl31 gl32 gl33 gl40 gl41 gl42 gl43 gl44 gl45 gl45">glFlushMappedBufferRange</a></li><li><a class="rewritelink command es20 es30 es31 gl20 gl21 gl30 gl31 gl32 gl33 gl40 gl41 gl42 gl43 gl44 gl45">glGenBuffers</a></li><li><a class="rewritelink command es30 es31 gl32 gl33 gl40 gl41 gl42 gl43 gl44 gl45 gl45 gl45">glGetBufferParameter</a></li><li><a class="rewritelink command es20 es30 es31 gl20 gl21 gl30 gl31 gl32 gl33 gl40 gl41 gl42 gl43 gl44 gl45 gl45">glGetBufferParameteriv</a></li><li><a class="rewritelink command es30 es31 gl20 gl21 gl30 gl31 gl32 gl33 gl40 gl41 gl42 gl43 gl44 gl45 gl45">glGetBufferPointerv</a></li><li><a class="rewritelink command gl20 gl21 gl30 gl31 gl32 gl33 gl40 gl41 gl42 gl43 gl44 gl45 gl45">glGetBufferSubData</a></li><li><a class="rewritelink command gl45 gl45">glGetVertexArrayIndexed</a></li><li><a class="rewritelink command gl45">glGetVertexArrayiv</a></li><li><a class="rewritelink command es20 es20 es30 es30 es30 es30 es31 es31 es31 es31 gl20 gl20 gl20 gl21 gl21 gl21 gl30 gl30 gl30 gl30 gl30 gl31 gl31 gl31 gl31 gl31 gl32 gl32 gl32 gl32 gl32 gl33 gl33 gl33 gl33 gl33 gl40 gl40 gl40 gl40 gl40 gl41 gl41 gl41 gl41 gl41 gl41 gl42 gl42 gl42 gl42 gl42 gl42 gl43 gl43 gl43 gl43 gl43 gl43 gl44 gl44 gl44 gl44 gl44 gl44 gl45 gl45 gl45 gl45 gl45 gl45">glGetVertexAttrib</a></li><li><a class="rewritelink command es20 es30 es31 gl20 gl21 gl30 gl31 gl32 gl33 gl40 gl41 gl42 gl43 gl44 gl45">glGetVertexAttribPointerv</a></li><li><a class="rewritelink command gl43 gl44 gl45">glInvalidateBufferData</a></li><li><a class="rewritelink command gl43 gl44 gl45">glInvalidateBufferSubData</a></li><li><a class="rewritelink command es20 es30 es31 gl20 gl21 gl30 gl31 gl32 gl33 gl40 gl41 gl42 gl43 gl44 gl45">glIsBuffer</a></li><li><a class="rewritelink command gl20 gl21 gl30 gl31 gl32 gl33 gl40 gl41 gl42 gl43 gl44 gl45 gl45">glMapBuffer</a></li><li><a class="rewritelink command es30 es31 gl30 gl31 gl32 gl33 gl40 gl41 gl42 gl43 gl44 gl45 gl45">glMapBufferRange</a></li><li><a class="rewritelink command gl20 gl21 gl30 gl31 gl32 gl33 gl40 gl41 gl42 gl43 gl44 gl45">glMultiDrawArrays</a></li><li><a class="rewritelink command gl43 gl44 gl45">glMultiDrawArraysIndirect</a></li><li><a class="rewritelink command gl20 gl21 gl30 gl31 gl32 gl33 gl40 gl41 gl42 gl43 gl44 gl45">glMultiDrawElements</a></li><li><a class="rewritelink command gl32 gl33 gl40 gl41 gl42 gl43 gl44 gl45">glMultiDrawElementsBaseVertex</a></li><li><a class="rewritelink command gl43 gl44 gl45">glMultiDrawElementsIndirect</a></li><li><a class="rewritelink command gl40 gl40 gl41 gl41 gl42 gl42 gl43 gl43 gl44 gl44 gl45 gl45">glPatchParameter</a></li><li><a class="rewritelink command gl31 gl32 gl33 gl40 gl41 gl42 gl43 gl44 gl45">glPrimitiveRestartIndex</a></li><li><a class="rewritelink command gl32 gl33 gl40 gl41 gl42 gl43 gl44 gl45">glProvokingVertex</a></li><li><a class="rewritelink command es30 es31 gl20 gl21 gl30 gl31 gl32 gl33 gl40 gl41 gl42 gl43 gl44 gl45 gl45">glUnmapBuffer</a></li><li><a class="rewritelink command gl45">glVertexArrayElementBuffer</a></li><li><a class="rewritelink command es20 es20 es20 es20 es20 es20 es20 es20 es30 es30 es30 es30 es30 es30 es30 es30 es30 es30 es30 es30 es31 es31 es31 es31 es31 es31 es31 es31 es31 es31 es31 es31 gl20 gl20 gl20 gl20 gl20 gl20 gl20 gl20 gl20 gl20 gl20 gl20 gl20 gl20 gl20 gl20 gl20 gl20 gl20 gl20 gl20 gl20 gl20 gl20 gl20 gl20 gl20 gl20 gl20 gl20 gl20 gl20 gl20 gl20 gl20 gl20 gl21 gl21 gl21 gl21 gl21 gl21 gl21 gl21 gl21 gl21 gl21 gl21 gl21 gl21 gl21 gl21 gl21 gl21 gl21 gl21 gl21 gl21 gl21 gl21 gl21 gl21 gl21 gl21 gl21 gl21 gl21 gl21 gl21 gl21 gl21 gl21 gl30 gl30 gl30 gl30 gl30 gl30 gl30 gl30 gl30 gl30 gl30 gl30 gl30 gl30 gl30 gl30 gl30 gl30 gl30 gl30 gl30 gl30 gl30 gl30 gl30 gl30 gl30 gl30 gl30 gl30 gl30 gl30 gl30 gl30 gl30 gl30 gl30 gl30 gl30 gl30 gl30 gl30 gl30 gl30 gl30 gl30 gl30 gl30 gl30 gl30 gl30 gl30 gl30 gl30 gl30 gl30 gl31 gl31 gl31 gl31 gl31 gl31 gl31 gl31 gl31 gl31 gl31 gl31 gl31 gl31 gl31 gl31 gl31 gl31 gl31 gl31 gl31 gl31 gl31 gl31 gl31 gl31 gl31 gl31 gl31 gl31 gl31 gl31 gl31 gl31 gl31 gl31 gl31 gl31 gl31 gl31 gl31 gl31 gl31 gl31 gl31 gl31 gl31 gl31 gl31 gl31 gl31 gl31 gl31 gl31 gl31 gl31 gl32 gl32 gl32 gl32 gl32 gl32 gl32 gl32 gl32 gl32 gl32 gl32 gl32 gl32 gl32 gl32 gl32 gl32 gl32 gl32 gl32 gl32 gl32 gl32 gl32 gl32 gl32 gl32 gl32 gl32 gl32 gl32 gl32 gl32 gl32 gl32 gl32 gl32 gl32 gl32 gl32 gl32 gl32 gl32 gl32 gl32 gl32 gl32 gl32 gl32 gl32 gl32 gl32 gl32 gl32 gl32 gl33 gl33 gl33 gl33 gl33 gl33 gl33 gl33 gl33 gl33 gl33 gl33 gl33 gl33 gl33 gl33 gl33 gl33 gl33 gl33 gl33 gl33 gl33 gl33 gl33 gl33 gl33 gl33 gl33 gl33 gl33 gl33 gl33 gl33 gl33 gl33 gl33 gl33 gl33 gl33 gl33 gl33 gl33 gl33 gl33 gl33 gl33 gl33 gl33 gl33 gl33 gl33 gl33 gl33 gl33 gl33 gl33 gl33 gl33 gl33 gl33 gl33 gl33 gl33 gl40 gl40 gl40 gl40 gl40 gl40 gl40 gl40 gl40 gl40 gl40 gl40 gl40 gl40 gl40 gl40 gl40 gl40 gl40 gl40 gl40 gl40 gl40 gl40 gl40 gl40 gl40 gl40 gl40 gl40 gl40 gl40 gl40 gl40 gl40 gl40 gl40 gl40 gl40 gl40 gl40 gl40 gl40 gl40 gl40 gl40 gl40 gl40 gl40 gl40 gl40 gl40 gl40 gl40 gl40 gl40 gl40 gl40 gl40 gl40 gl40 gl40 gl40 gl40 gl41 gl41 gl41 gl41 gl41 gl41 gl41 gl41 gl41 gl41 gl41 gl41 gl41 gl41 gl41 gl41 gl41 gl41 gl41 gl41 gl41 gl41 gl41 gl41 gl41 gl41 gl41 gl41 gl41 gl41 gl41 gl41 gl41 gl41 gl41 gl41 gl41 gl41 gl41 gl41 gl41 gl41 gl41 gl41 gl41 gl41 gl41 gl41 gl41 gl41 gl41 gl41 gl41 gl41 gl41 gl41 gl41 gl41 gl41 gl41 gl41 gl41 gl41 gl41 gl41 gl41 gl41 gl41 gl41 gl41 gl41 gl41 gl42 gl42 gl42 gl42 gl42 gl42 gl42 gl42 gl42 gl42 gl42 gl42 gl42 gl42 gl42 gl42 gl42 gl42 gl42 gl42 gl42 gl42 gl42 gl42 gl42 gl42 gl42 gl42 gl42 gl42 gl42 gl42 gl42 gl42 gl42 gl42 gl42 gl42 gl42 gl42 gl42 gl42 gl42 gl42 gl42 gl42 gl42 gl42 gl42 gl42 gl42 gl42 gl42 gl42 gl42 gl42 gl42 gl42 gl42 gl42 gl42 gl42 gl42 gl42 gl42 gl42 gl42 gl42 gl42 gl42 gl42 gl42 gl43 gl43 gl43 gl43 gl43 gl43 gl43 gl43 gl43 gl43 gl43 gl43 gl43 gl43 gl43 gl43 gl43 gl43 gl43 gl43 gl43 gl43 gl43 gl43 gl43 gl43 gl43 gl43 gl43 gl43 gl43 gl43 gl43 gl43 gl43 gl43 gl43 gl43 gl43 gl43 gl43 gl43 gl43 gl43 gl43 gl43 gl43 gl43 gl43 gl43 gl43 gl43 gl43 gl43 gl43 gl43 gl43 gl43 gl43 gl43 gl43 gl43 gl43 gl43 gl43 gl43 gl43 gl43 gl43 gl43 gl43 gl43 gl44 gl44 gl44 gl44 gl44 gl44 gl44 gl44 gl44 gl44 gl44 gl44 gl44 gl44 gl44 gl44 gl44 gl44 gl44 gl44 gl44 gl44 gl44 gl44 gl44 gl44 gl44 gl44 gl44 gl44 gl44 gl44 gl44 gl44 gl44 gl44 gl44 gl44 gl44 gl44 gl44 gl44 gl44 gl44 gl44 gl44 gl44 gl44 gl44 gl44 gl44 gl44 gl44 gl44 gl44 gl44 gl44 gl44 gl44 gl44 gl44 gl44 gl44 gl44 gl44 gl44 gl44 gl44 gl44 gl44 gl44 gl44 gl45 gl45 gl45 gl45 gl45 gl45 gl45 gl45 gl45 gl45 gl45 gl45 gl45 gl45 gl45 gl45 gl45 gl45 gl45 gl45 gl45 gl45 gl45 gl45 gl45 gl45 gl45 gl45 gl45 gl45 gl45 gl45 gl45 gl45 gl45 gl45 gl45 gl45 gl45 gl45 gl45 gl45 gl45 gl45 gl45 gl45 gl45 gl45 gl45 gl45 gl45 gl45 gl45 gl45 gl45 gl45 gl45 gl45 gl45 gl45 gl45 gl45 gl45 gl45 gl45 gl45 gl45 gl45 gl45 gl45 gl45 gl45">glVertexAttrib</a></li><li><a class="rewritelink command es31 gl43 gl44 gl45 gl45">glVertexAttribBinding</a></li><li><a class="rewritelink command es30 es31 gl33 gl40 gl41 gl42 gl43 gl44 gl45">glVertexAttribDivisor</a></li><li><a class="rewritelink command es31 es31 gl43 gl43 gl43 gl44 gl44 gl44 gl45 gl45 gl45 gl45 gl45 gl45">glVertexAttribFormat</a></li><li><a class="rewritelink command es20 es30 es30 es31 es31 gl20 gl21 gl30 gl30 gl31 gl31 gl32 gl32 gl33 gl33 gl40 gl40 gl41 gl41 gl41 gl42 gl42 gl42 gl43 gl43 gl43 gl44 gl44 gl44 gl45 gl45 gl45">glVertexAttribPointer</a></li><li><a class="rewritelink command es31 gl43 gl44 gl45 gl45">glVertexBindingDivisor</a></li></ul></li><li class="category es20 es30 es31 gl20 gl21 gl30 gl31 gl32 gl33 gl40 gl41 gl42 gl43 gl44 gl45">State Management<ul><li><a class="rewritelink command es20 es30 es31 gl20 gl21 gl30 gl31 gl32 gl33 gl40 gl41 gl42 gl43 gl44 gl45">glBlendColor</a></li><li><a class="rewritelink command es20 es30 es31 gl20 gl21 gl30 gl31 gl32 gl33 gl40 gl40 gl41 gl41 gl42 gl42 gl43 gl43 gl44 gl44 gl45 gl45">glBlendEquation</a></li><li><a class="rewritelink command es20 es30 es31 gl20 gl21 gl30 gl31 gl32 gl33 gl40 gl40 gl41 gl41 gl42 gl42 gl43 gl43 gl44 gl44 gl45 gl45">glBlendEquationSeparate</a></li><li><a class="rewritelink command es20 es30 es31 gl20 gl21 gl30 gl31 gl32 gl33 gl40 gl40 gl41 gl41 gl42 gl42 gl43 gl43 gl44 gl44 gl45 gl45">glBlendFunc</a></li><li><a class="rewritelink command es20 es30 es31 gl20 gl21 gl30 gl31 gl32 gl33 gl40 gl40 gl41 gl41 gl42 gl42 gl43 gl43 gl44 gl44 gl45 gl45">glBlendFuncSeparate</a></li><li><a class="rewritelink command gl30 gl31 gl32 gl33 gl40 gl41 gl42 gl43 gl44 gl45">glClampColor</a></li><li><a class="rewritelink command gl45">glClipControl</a></li><li><a class="rewritelink command es20 es30 es31 gl20 gl21 gl30 gl30 gl31 gl31 gl32 gl32 gl33 gl33 gl40 gl40 gl41 gl41 gl42 gl42 gl43 gl43 gl44 gl44 gl45 gl45">glColorMask</a></li><li><a class="rewritelink command es20 es30 es31 gl20 gl21 gl30 gl31 gl32 gl33 gl40 gl41 gl42 gl43 gl44 gl45">glCullFace</a></li><li><a class="rewritelink command es20 es30 es31 gl20 gl21 gl30 gl31 gl32 gl33 gl40 gl41 gl42 gl43 gl44 gl45">glDepthFunc</a></li><li><a class="rewritelink command es20 es30 es31 gl20 gl21 gl30 gl31 gl32 gl33 gl40 gl41 gl42 gl43 gl44 gl45">glDepthMask</a></li><li><a class="rewritelink command gl20 gl21 gl30 gl31 gl32 gl33 gl40 gl41 gl41 gl42 gl42 gl43 gl43 gl44 gl44 gl45 gl45">glDepthRange</a></li><li><a class="rewritelink command gl41 gl42 gl43 gl44 gl45">glDepthRangeArray</a></li><li><a class="rewritelink command gl41 gl42 gl43 gl44 gl45">glDepthRangeIndexed</a></li><li><a class="rewritelink command es20 es30 es31">glDepthRangef</a></li><li><a class="rewritelink command es20 es30 es31 gl20 gl21 gl30 gl30 gl31 gl31 gl32 gl32 gl33 gl33 gl40 gl40 gl41 gl41 gl42 gl42 gl43 gl43 gl44 gl44 gl45 gl45">glDisable</a></li><li><a class="rewritelink command es20 es30 es31 gl20 gl21 gl30 gl30 gl31 gl31 gl32 gl32 gl33 gl33 gl40 gl40 gl41 gl41 gl42 gl42 gl43 gl43 gl44 gl44 gl45 gl45">glEnable</a></li><li><a class="rewritelink command es20 es30 es31 gl20 gl21 gl30 gl31 gl32 gl33 gl40 gl41 gl42 gl43 gl44 gl45">glFrontFace</a></li><li><a class="rewritelink command es20 es20 es20 es30 es30 es30 es30 es30 es30 es31 es31 es31 es31 es31 es31 es31 gl20 gl20 gl20 gl20 gl21 gl21 gl21 gl21 gl30 gl30 gl30 gl30 gl30 gl30 gl31 gl31 gl31 gl31 gl31 gl31 gl32 gl32 gl32 gl32 gl32 gl32 gl32 gl32 gl33 gl33 gl33 gl33 gl33 gl33 gl33 gl33 gl40 gl40 gl40 gl40 gl40 gl40 gl40 gl40 gl41 gl41 gl41 gl41 gl41 gl41 gl41 gl41 gl41 gl41 gl42 gl42 gl42 gl42 gl42 gl42 gl42 gl42 gl42 gl42 gl43 gl43 gl43 gl43 gl43 gl43 gl43 gl43 gl43 gl43 gl44 gl44 gl44 gl44 gl44 gl44 gl44 gl44 gl44 gl44 gl45 gl45 gl45 gl45 gl45 gl45 gl45 gl45 gl45 gl45">glGet</a></li><li><a class="rewritelink command es20 es30 es31 gl20 gl21 gl30 gl31 gl32 gl33 gl40 gl41 gl42 gl43 gl44 gl45">glGetError</a></li><li><a class="rewritelink command es20 es30 es31 gl20 gl21 gl30 gl31 gl32 gl33 gl40 gl41 gl42 gl43 gl44 gl45">glHint</a></li><li><a class="rewritelink command es20 es30 es31 gl20 gl21 gl30 gl30 gl31 gl31 gl32 gl32 gl33 gl33 gl40 gl40 gl41 gl41 gl42 gl42 gl43 gl43 gl44 gl44 gl45 gl45">glIsEnabled</a></li><li><a class="rewritelink command es20 es30 es31 gl20 gl21 gl30 gl31 gl32 gl33 gl40 gl41 gl42 gl43 gl44 gl45">glLineWidth</a></li><li><a class="rewritelink command gl20 gl21 gl30 gl31 gl32 gl33 gl40 gl41 gl42 gl43 gl44 gl45">glLogicOp</a></li><li><a class="rewritelink command gl20 gl20 gl21 gl21 gl30 gl30 gl31 gl31 gl32 gl32 gl33 gl33 gl40 gl40 gl41 gl41 gl42 gl42 gl43 gl43 gl44 gl44 gl45 gl45">glPixelStore</a></li><li><a class="rewritelink command es20 es30 es31">glPixelStorei</a></li><li><a class="rewritelink command gl20 gl20 gl20 gl20 gl21 gl21 gl21 gl21 gl30 gl30 gl30 gl30 gl31 gl31 gl31 gl31 gl32 gl32 gl32 gl32 gl33 gl33 gl33 gl33 gl40 gl40 gl40 gl40 gl41 gl41 gl41 gl41 gl42 gl42 gl42 gl42 gl43 gl43 gl43 gl43 gl44 gl44 gl44 gl44 gl45 gl45 gl45 gl45">glPointParameter</a></li><li><a class="rewritelink command gl20 gl21 gl30 gl31 gl32 gl33 gl40 gl41 gl42 gl43 gl44 gl45">glPointSize</a></li><li><a class="rewritelink command gl20 gl21 gl30 gl31 gl32 gl33 gl40 gl41 gl42 gl43 gl44 gl45">glPolygonMode</a></li><li><a class="rewritelink command es20 es30 es31 gl20 gl21 gl30 gl31 gl32 gl33 gl40 gl41 gl42 gl43 gl44 gl45">glPolygonOffset</a></li><li><a class="rewritelink command es20 es30 es31 gl20 gl21 gl30 gl31 gl32 gl33 gl40 gl41 gl42 gl43 gl44 gl45">glSampleCoverage</a></li><li><a class="rewritelink command es20 es30 es31 gl20 gl21 gl30 gl31 gl32 gl33 gl40 gl41 gl42 gl43 gl44 gl45">glScissor</a></li><li><a class="rewritelink command gl41 gl42 gl43 gl44 gl45">glScissorArray</a></li><li><a class="rewritelink command gl41 gl41 gl42 gl42 gl43 gl43 gl44 gl44 gl45 gl45">glScissorIndexed</a></li><li><a class="rewritelink command es20 es30 es31 gl20 gl21 gl30 gl31 gl32 gl33 gl40 gl41 gl42 gl43 gl44 gl45">glStencilFunc</a></li><li><a class="rewritelink command es20 es30 es31 gl20 gl21 gl30 gl31 gl32 gl33 gl40 gl41 gl42 gl43 gl44 gl45">glStencilFuncSeparate</a></li><li><a class="rewritelink command es20 es30 es31 gl20 gl21 gl30 gl31 gl32 gl33 gl40 gl41 gl42 gl43 gl44 gl45">glStencilMask</a></li><li><a class="rewritelink command es20 es30 es31 gl20 gl21 gl30 gl31 gl32 gl33 gl40 gl41 gl42 gl43 gl44 gl45">glStencilMaskSeparate</a></li><li><a class="rewritelink command es20 es30 es31 gl20 gl21 gl30 gl31 gl32 gl33 gl40 gl41 gl42 gl43 gl44 gl45">glStencilOp</a></li><li><a class="rewritelink command es20 es30 es31 gl20 gl21 gl30 gl31 gl32 gl33 gl40 gl41 gl42 gl43 gl44 gl45">glStencilOpSeparate</a></li><li><a class="rewritelink command es20 es30 es31 gl20 gl21 gl30 gl31 gl32 gl33 gl40 gl41 gl42 gl43 gl44 gl45">glViewport</a></li><li><a class="rewritelink command gl41 gl42 gl43 gl44 gl45">glViewportArray</a></li><li><a class="rewritelink command gl41 gl41 gl42 gl42 gl43 gl43 gl44 gl44 gl45 gl45">glViewportIndexed</a></li></ul></li><li class="category es30 es31 gl30 gl31 gl32 gl33 gl40 gl41 gl42 gl43 gl44 gl45">Transform Feedback<ul><li><a class="rewritelink command es30 es31 gl30 gl31 gl32 gl33 gl40 gl41 gl42 gl43 gl44 gl45">glBeginTransformFeedback</a></li><li><a class="rewritelink command es30 es31 gl40 gl41 gl42 gl43 gl44 gl45">glBindTransformFeedback</a></li><li><a class="rewritelink command gl45">glCreateTransformFeedbacks</a></li><li><a class="rewritelink command es30 es31 gl40 gl41 gl42 gl43 gl44 gl45">glDeleteTransformFeedbacks</a></li><li><a class="rewritelink command gl40 gl41 gl42 gl43 gl44 gl45">glDrawTransformFeedback</a></li><li><a class="rewritelink command gl42 gl43 gl44 gl45">glDrawTransformFeedbackInstanced</a></li><li><a class="rewritelink command gl40 gl41 gl42 gl43 gl44 gl45">glDrawTransformFeedbackStream</a></li><li><a class="rewritelink command gl42 gl43 gl44 gl45">glDrawTransformFeedbackStreamInstanced</a></li><li><a class="rewritelink command es30 es31 gl30 gl31 gl32 gl33 gl40 gl41 gl42 gl43 gl44 gl45">glEndTransformFeedback</a></li><li><a class="rewritelink command es30 es31 gl40 gl41 gl42 gl43 gl44 gl45">glGenTransformFeedbacks</a></li><li><a class="rewritelink command gl45 gl45 gl45">glGetTransformFeedback</a></li><li><a class="rewritelink command es30 es31 gl30 gl31 gl32 gl33 gl40 gl41 gl42 gl43 gl44 gl45">glGetTransformFeedbackVarying</a></li><li><a class="rewritelink command es30 es31 gl40 gl41 gl42 gl43 gl44 gl45">glIsTransformFeedback</a></li><li><a class="rewritelink command es30 es31 gl40 gl41 gl42 gl43 gl44 gl45">glPauseTransformFeedback</a></li><li><a class="rewritelink command es30 es31 gl40 gl41 gl42 gl43 gl44 gl45">glResumeTransformFeedback</a></li><li><a class="rewritelink command gl45">glTransformFeedbackBufferBase</a></li><li><a class="rewritelink command gl45">glTransformFeedbackBufferRange</a></li><li><a class="rewritelink command es30 es31 gl30 gl31 gl32 gl33 gl40 gl41 gl42 gl43 gl44 gl45">glTransformFeedbackVaryings</a></li></ul></li><li class="category es31 gl43 gl44 gl45 gl42 es30 gl32 gl33 gl40 gl41 es20 gl20 gl21 gl30 gl31">Utility<ul><li><a class="rewritelink command es31 gl43 gl44 gl45">glDispatchCompute</a></li><li><a class="rewritelink command es31 gl43 gl44 gl45">glDispatchComputeIndirect</a></li><li><a class="rewritelink command gl45">glGetGraphicsResetStatus</a></li><li><a class="rewritelink command gl42 gl43 gl43 gl44 gl44 gl45 gl45">glGetInternalformat</a></li><li><a class="rewritelink command es30 es31">glGetInternalformativ</a></li><li><a class="rewritelink command gl32 gl33 gl40 gl41 gl42 gl43 gl44 gl45">glGetMultisample</a></li><li><a class="rewritelink command es31">glGetMultisamplefv</a></li><li><a class="rewritelink command es20 es30 es30 es31 es31 gl20 gl21 gl30 gl30 gl31 gl31 gl32 gl32 gl33 gl33 gl40 gl40 gl41 gl41 gl42 gl42 gl43 gl43 gl44 gl44 gl45 gl45">glGetString</a></li><li><a class="rewritelink command es31 es31 gl42 gl43 gl44 gl45 gl45">glMemoryBarrier</a></li></ul></li><li class="category gl30 gl31 gl32 gl33 gl40 gl41 gl42 gl43 gl44 gl45 es30 es31 gl20 gl21">Queries<ul><li><a class="rewritelink command gl30 gl31 gl32 gl33 gl40 gl41 gl42 gl43 gl44 gl45">glBeginConditionalRender</a></li><li><a class="rewritelink command es30 es31 gl20 gl21 gl30 gl31 gl32 gl33 gl40 gl41 gl42 gl43 gl44 gl45">glBeginQuery</a></li><li><a class="rewritelink command gl40 gl41 gl42 gl43 gl44 gl45">glBeginQueryIndexed</a></li><li><a class="rewritelink command gl45">glCreateQueries</a></li><li><a class="rewritelink command es30 es31 gl20 gl21 gl30 gl31 gl32 gl33 gl40 gl41 gl42 gl43 gl44 gl45">glDeleteQueries</a></li><li><a class="rewritelink command gl30 gl31 gl32 gl33 gl40 gl41 gl42 gl43 gl44 gl45">glEndConditionalRender</a></li><li><a class="rewritelink command es30 es31 gl20 gl21 gl30 gl31 gl32 gl33 gl40 gl41 gl42 gl43 gl44 gl45">glEndQuery</a></li><li><a class="rewritelink command gl40 gl41 gl42 gl43 gl44 gl45">glEndQueryIndexed</a></li><li><a class="rewritelink command es30 es31 gl20 gl21 gl30 gl31 gl32 gl33 gl40 gl41 gl42 gl43 gl44 gl45">glGenQueries</a></li><li><a class="rewritelink command gl40 gl41 gl42 gl43 gl44 gl45">glGetQueryIndexed</a></li><li><a class="rewritelink command gl20 gl20 gl21 gl21 gl30 gl30 gl31 gl31 gl32 gl32 gl33 gl33 gl33 gl33 gl40 gl40 gl40 gl40 gl41 gl41 gl41 gl41 gl42 gl42 gl42 gl42 gl43 gl43 gl43 gl43 gl44 gl44 gl44 gl44 gl45 gl45 gl45 gl45">glGetQueryObject</a></li><li><a class="rewritelink command es30 es31">glGetQueryObjectuiv</a></li><li><a class="rewritelink command es30 es31 gl20 gl21 gl30 gl31 gl32 gl33 gl40 gl41 gl42 gl43 gl44 gl45">glGetQueryiv</a></li><li><a class="rewritelink command es30 es31 gl20 gl21 gl30 gl31 gl32 gl33 gl40 gl41 gl42 gl43 gl44 gl45">glIsQuery</a></li><li><a class="rewritelink command gl33 gl40 gl41 gl42 gl43 gl44 gl45">glQueryCounter</a></li></ul></li><li class="category es30 es31 gl32 gl33 gl40 gl41 gl42 gl43 gl44 gl45">Syncing<ul><li><a class="rewritelink command es30 es31 gl32 gl33 gl40 gl41 gl42 gl43 gl44 gl45">glClientWaitSync</a></li><li><a class="rewritelink command es30 es31 gl32 gl33 gl40 gl41 gl42 gl43 gl44 gl45">glDeleteSync</a></li><li><a class="rewritelink command es30 es31 gl32 gl33 gl40 gl41 gl42 gl43 gl44 gl45">glFenceSync</a></li><li><a class="rewritelink command gl32 gl33 gl40 gl41 gl42 gl43 gl44 gl45">glGetSync</a></li><li><a class="rewritelink command es30 es31">glGetSynciv</a></li><li><a class="rewritelink command es30 es31 gl32 gl33 gl40 gl41 gl42 gl43 gl44 gl45">glIsSync</a></li><li><a class="rewritelink command gl45">glTextureBarrier</a></li><li><a class="rewritelink command es30 es31 gl32 gl33 gl40 gl41 gl42 gl43 gl44 gl45">glWaitSync</a></li></ul></li><li class="category es30 es31 gl30 gl31 gl32 gl33 gl40 gl41 gl42 gl43 gl44 gl45">Vertex Array Objects<ul><li><a class="rewritelink command es30 es31 gl30 gl31 gl32 gl33 gl40 gl41 gl42 gl43 gl44 gl45">glBindVertexArray</a></li><li><a class="rewritelink command es30 es31 gl30 gl31 gl32 gl33 gl40 gl41 gl42 gl43 gl44 gl45">glDeleteVertexArrays</a></li><li><a class="rewritelink command es30 es31 gl30 gl31 gl32 gl33 gl40 gl41 gl42 gl43 gl44 gl45">glGenVertexArrays</a></li><li><a class="rewritelink command es30 es31 gl30 gl31 gl32 gl33 gl40 gl41 gl42 gl43 gl44 gl45">glIsVertexArray</a></li></ul></li><li class="category es30 es31 gl33 gl40 gl41 gl42 gl43 gl44 gl45">Samplers<ul><li><a class="rewritelink command es30 es31 gl33 gl40 gl41 gl42 gl43 gl44 gl45">glBindSampler</a></li><li><a class="rewritelink command gl44 gl45">glBindSamplers</a></li><li><a class="rewritelink command gl45">glCreateSamplers</a></li><li><a class="rewritelink command es30 es31 gl33 gl40 gl41 gl42 gl43 gl44 gl45">glDeleteSamplers</a></li><li><a class="rewritelink command es30 es31 gl33 gl40 gl41 gl42 gl43 gl44 gl45">glGenSamplers</a></li><li><a class="rewritelink command es30 es30 es31 es31 gl33 gl33 gl33 gl33 gl40 gl40 gl40 gl40 gl41 gl41 gl41 gl41 gl42 gl42 gl42 gl42 gl43 gl43 gl43 gl43 gl44 gl44 gl44 gl44 gl45 gl45 gl45 gl45">glGetSamplerParameter</a></li><li><a class="rewritelink command es30 es31 gl33 gl40 gl41 gl42 gl43 gl44 gl45">glIsSampler</a></li><li><a class="rewritelink command es30 es30 es30 es30 es31 es31 es31 es31 gl33 gl33 gl33 gl33 gl33 gl33 gl40 gl40 gl40 gl40 gl40 gl40 gl41 gl41 gl41 gl41 gl41 gl41 gl42 gl42 gl42 gl42 gl42 gl42 gl43 gl43 gl43 gl43 gl43 gl43 gl44 gl44 gl44 gl44 gl44 gl44 gl45 gl45 gl45 gl45 gl45 gl45">glSamplerParameter</a></li></ul></li><li class="category es31 gl41 gl42 gl43 gl44 gl45">Program Pipelines<ul><li><a class="rewritelink command es31 gl41 gl42 gl43 gl44 gl45">glActiveShaderProgram</a></li><li><a class="rewritelink command es31 gl41 gl42 gl43 gl44 gl45">glBindProgramPipeline</a></li><li><a class="rewritelink command gl45">glCreateProgramPipelines</a></li><li><a class="rewritelink command es31 gl41 gl42 gl43 gl44 gl45">glDeleteProgramPipelines</a></li><li><a class="rewritelink command es31 gl41 gl42 gl43 gl44 gl45">glGenProgramPipelines</a></li><li><a class="rewritelink command es31 gl41 gl42 gl43 gl44 gl45">glGetProgramPipeline</a></li><li><a class="rewritelink command es31 gl41 gl42 gl43 gl44 gl45">glGetProgramPipelineInfoLog</a></li><li><a class="rewritelink command es31 gl41 gl42 gl43 gl44 gl45">glIsProgramPipeline</a></li><li><a class="rewritelink command es31 gl41 gl42 gl43 gl44 gl45">glValidateProgramPipeline</a></li></ul></li><li class="category gl20 gl21 gl30 gl31">Immediate Mode<ul><li><a class="rewritelink command gl20 gl21 gl30 gl31">glArrayElement</a></li><li><a class="rewritelink command gl20 gl21 gl30 gl31">glBegin</a></li><li><a class="rewritelink command gl20 gl20 gl20 gl20 gl20 gl20 gl20 gl20 gl20 gl20 gl20 gl20 gl20 gl20 gl20 gl20 gl20 gl20 gl20 gl20 gl20 gl20 gl20 gl20 gl20 gl20 gl20 gl20 gl20 gl20 gl20 gl20 gl21 gl21 gl21 gl21 gl21 gl21 gl21 gl21 gl21 gl21 gl21 gl21 gl21 gl21 gl21 gl21 gl21 gl21 gl21 gl21 gl21 gl21 gl21 gl21 gl21 gl21 gl21 gl21 gl21 gl21 gl21 gl21 gl30 gl30 gl30 gl30 gl30 gl30 gl30 gl30 gl30 gl30 gl30 gl30 gl30 gl30 gl30 gl30 gl30 gl30 gl30 gl30 gl30 gl30 gl30 gl30 gl30 gl30 gl30 gl30 gl30 gl30 gl30 gl30 gl31 gl31 gl31 gl31 gl31 gl31 gl31 gl31 gl31 gl31 gl31 gl31 gl31 gl31 gl31 gl31 gl31 gl31 gl31 gl31 gl31 gl31 gl31 gl31 gl31 gl31 gl31 gl31 gl31 gl31 gl31 gl31">glColor</a></li><li><a class="rewritelink command gl20 gl21 gl30 gl31">glEnd</a></li><li><a class="rewritelink command gl20 gl20 gl20 gl20 gl20 gl20 gl20 gl20 gl21 gl21 gl21 gl21 gl21 gl21 gl21 gl21 gl30 gl30 gl30 gl30 gl30 gl30 gl30 gl30 gl31 gl31 gl31 gl31 gl31 gl31 gl31 gl31">glEvalCoord</a></li><li><a class="rewritelink command gl20 gl20 gl21 gl21 gl30 gl30 gl31 gl31">glEvalMesh</a></li><li><a class="rewritelink command gl20 gl20 gl21 gl21 gl30 gl30 gl31 gl31">glEvalPoint</a></li><li><a class="rewritelink command gl20 gl20 gl20 gl20 gl21 gl21 gl21 gl21 gl30 gl30 gl30 gl30 gl31 gl31 gl31 gl31">glFogCoord</a></li><li><a class="rewritelink command gl20 gl20 gl20 gl20 gl20 gl20 gl20 gl20 gl20 gl20 gl21 gl21 gl21 gl21 gl21 gl21 gl21 gl21 gl21 gl21 gl30 gl30 gl30 gl30 gl30 gl30 gl30 gl30 gl30 gl30 gl31 gl31 gl31 gl31 gl31 gl31 gl31 gl31 gl31 gl31">glIndex</a></li><li><a class="rewritelink command gl20 gl20 gl20 gl20 gl21 gl21 gl21 gl21 gl30 gl30 gl30 gl30 gl31 gl31 gl31 gl31">glMaterial</a></li><li><a class="rewritelink command gl20 gl20 gl20 gl20 gl20 gl20 gl20 gl20 gl20 gl20 gl20 gl20 gl20 gl20 gl20 gl20 gl20 gl20 gl20 gl20 gl20 gl20 gl20 gl20 gl20 gl20 gl20 gl20 gl20 gl20 gl20 gl20 gl21 gl21 gl21 gl21 gl21 gl21 gl21 gl21 gl21 gl21 gl21 gl21 gl21 gl21 gl21 gl21 gl21 gl21 gl21 gl21 gl21 gl21 gl21 gl21 gl21 gl21 gl21 gl21 gl21 gl21 gl21 gl21 gl30 gl30 gl30 gl30 gl30 gl30 gl30 gl30 gl30 gl30 gl30 gl30 gl30 gl30 gl30 gl30 gl30 gl30 gl30 gl30 gl30 gl30 gl30 gl30 gl30 gl30 gl30 gl30 gl30 gl30 gl30 gl30 gl31 gl31 gl31 gl31 gl31 gl31 gl31 gl31 gl31 gl31 gl31 gl31 gl31 gl31 gl31 gl31 gl31 gl31 gl31 gl31 gl31 gl31 gl31 gl31 gl31 gl31 gl31 gl31 gl31 gl31 gl31 gl31">glMultiTexCoord</a></li><li><a class="rewritelink command gl20 gl20 gl20 gl20 gl20 gl20 gl20 gl20 gl20 gl20 gl21 gl21 gl21 gl21 gl21 gl21 gl21 gl21 gl21 gl21 gl30 gl30 gl30 gl30 gl30 gl30 gl30 gl30 gl30 gl30 gl31 gl31 gl31 gl31 gl31 gl31 gl31 gl31 gl31 gl31">glNormal</a></li><li><a class="rewritelink command gl20 gl20 gl20 gl20 gl20 gl20 gl20 gl20 gl20 gl20 gl20 gl20 gl20 gl20 gl20 gl20 gl21 gl21 gl21 gl21 gl21 gl21 gl21 gl21 gl21 gl21 gl21 gl21 gl21 gl21 gl21 gl21 gl30 gl30 gl30 gl30 gl30 gl30 gl30 gl30 gl30 gl30 gl30 gl30 gl30 gl30 gl30 gl30 gl31 gl31 gl31 gl31 gl31 gl31 gl31 gl31 gl31 gl31 gl31 gl31 gl31 gl31 gl31 gl31">glSecondaryColor</a></li><li><a class="rewritelink command gl20 gl20 gl20 gl20 gl20 gl20 gl20 gl20 gl20 gl20 gl20 gl20 gl20 gl20 gl20 gl20 gl20 gl20 gl20 gl20 gl20 gl20 gl20 gl20 gl20 gl20 gl20 gl20 gl20 gl20 gl20 gl20 gl21 gl21 gl21 gl21 gl21 gl21 gl21 gl21 gl21 gl21 gl21 gl21 gl21 gl21 gl21 gl21 gl21 gl21 gl21 gl21 gl21 gl21 gl21 gl21 gl21 gl21 gl21 gl21 gl21 gl21 gl21 gl21 gl30 gl30 gl30 gl30 gl30 gl30 gl30 gl30 gl30 gl30 gl30 gl30 gl30 gl30 gl30 gl30 gl30 gl30 gl30 gl30 gl30 gl30 gl30 gl30 gl30 gl30 gl30 gl30 gl30 gl30 gl30 gl30 gl31 gl31 gl31 gl31 gl31 gl31 gl31 gl31 gl31 gl31 gl31 gl31 gl31 gl31 gl31 gl31 gl31 gl31 gl31 gl31 gl31 gl31 gl31 gl31 gl31 gl31 gl31 gl31 gl31 gl31 gl31 gl31">glTexCoord</a></li><li><a class="rewritelink command gl20 gl20 gl20 gl20 gl20 gl20 gl20 gl20 gl20 gl20 gl20 gl20 gl20 gl20 gl20 gl20 gl20 gl20 gl20 gl20 gl20 gl20 gl20 gl20 gl21 gl21 gl21 gl21 gl21 gl21 gl21 gl21 gl21 gl21 gl21 gl21 gl21 gl21 gl21 gl21 gl21 gl21 gl21 gl21 gl21 gl21 gl21 gl21 gl30 gl30 gl30 gl30 gl30 gl30 gl30 gl30 gl30 gl30 gl30 gl30 gl30 gl30 gl30 gl30 gl30 gl30 gl30 gl30 gl30 gl30 gl30 gl30 gl31 gl31 gl31 gl31 gl31 gl31 gl31 gl31 gl31 gl31 gl31 gl31 gl31 gl31 gl31 gl31 gl31 gl31 gl31 gl31 gl31 gl31 gl31 gl31">glVertex</a></li></ul></li><li class="category gl20 gl21 gl30 gl31">GL2 Rasterization<ul><li><a class="rewritelink command gl20 gl21 gl30 gl31">glBitmap</a></li><li><a class="rewritelink command gl20 gl21 gl30 gl31">glClearIndex</a></li><li><a class="rewritelink command gl20 gl21 gl30 gl31">glClipPlane</a></li><li><a class="rewritelink command gl20 gl21 gl30 gl31">glCopyPixels</a></li><li><a class="rewritelink command gl20 gl21 gl30 gl31">glDrawPixels</a></li><li><a class="rewritelink command gl20 gl21 gl30 gl31">glFeedbackBuffer</a></li><li><a class="rewritelink command gl20 gl20 gl20 gl20 gl21 gl21 gl21 gl21 gl30 gl30 gl30 gl30 gl31 gl31 gl31 gl31">glFog</a></li><li><a class="rewritelink command gl20 gl21 gl30 gl31">glGetClipPlane</a></li><li><a class="rewritelink command gl20 gl20 gl20 gl21 gl21 gl21 gl30 gl30 gl30 gl31 gl31 gl31">glGetMap</a></li><li><a class="rewritelink command gl20 gl20 gl20 gl21 gl21 gl21 gl30 gl30 gl30 gl31 gl31 gl31">glGetPixelMap</a></li><li><a class="rewritelink command gl20 gl21 gl30 gl31">glGetPolygonStipple</a></li><li><a class="rewritelink command gl20 gl21 gl30 gl31">glInitNames</a></li><li><a class="rewritelink command gl20 gl21 gl30 gl31">glLineStipple</a></li><li><a class="rewritelink command gl20 gl21 gl30 gl31">glLoadName</a></li><li><a class="rewritelink command gl20 gl20 gl21 gl21 gl30 gl30 gl31 gl31">glMap1</a></li><li><a class="rewritelink command gl20 gl20 gl21 gl21 gl30 gl30 gl31 gl31">glMap2</a></li><li><a class="rewritelink command gl20 gl20 gl20 gl20 gl21 gl21 gl21 gl21 gl30 gl30 gl30 gl30 gl31 gl31 gl31 gl31">glMapGrid</a></li><li><a class="rewritelink command gl20 gl21 gl30 gl31">glPassThrough</a></li><li><a class="rewritelink command gl20 gl21 gl30 gl31">glPixelZoom</a></li><li><a class="rewritelink command gl20 gl21 gl30 gl31">glPolygonStipple</a></li><li><a class="rewritelink command gl20 gl21 gl30 gl31">glPopName</a></li><li><a class="rewritelink command gl20 gl21 gl30 gl31">glPushName</a></li><li><a class="rewritelink command gl20 gl20 gl20 gl20 gl20 gl20 gl20 gl20 gl20 gl20 gl20 gl20 gl20 gl20 gl20 gl20 gl20 gl20 gl20 gl20 gl20 gl20 gl20 gl20 gl21 gl21 gl21 gl21 gl21 gl21 gl21 gl21 gl21 gl21 gl21 gl21 gl21 gl21 gl21 gl21 gl21 gl21 gl21 gl21 gl21 gl21 gl21 gl21 gl30 gl30 gl30 gl30 gl30 gl30 gl30 gl30 gl30 gl30 gl30 gl30 gl30 gl30 gl30 gl30 gl30 gl30 gl30 gl30 gl30 gl30 gl30 gl30 gl31 gl31 gl31 gl31 gl31 gl31 gl31 gl31 gl31 gl31 gl31 gl31 gl31 gl31 gl31 gl31 gl31 gl31 gl31 gl31 gl31 gl31 gl31 gl31">glRasterPos</a></li><li><a class="rewritelink command gl20 gl20 gl20 gl20 gl20 gl20 gl20 gl20 gl21 gl21 gl21 gl21 gl21 gl21 gl21 gl21 gl30 gl30 gl30 gl30 gl30 gl30 gl30 gl30 gl31 gl31 gl31 gl31 gl31 gl31 gl31 gl31">glRect</a></li><li><a class="rewritelink command gl20 gl21 gl30 gl31">glRenderMode</a></li><li><a class="rewritelink command gl20 gl21 gl30 gl31">glSelectBuffer</a></li><li><a class="rewritelink command gl20 gl20 gl20 gl20 gl20 gl20 gl20 gl20 gl20 gl20 gl20 gl20 gl20 gl20 gl20 gl20 gl21 gl21 gl21 gl21 gl21 gl21 gl21 gl21 gl21 gl21 gl21 gl21 gl21 gl21 gl21 gl21 gl30 gl30 gl30 gl30 gl30 gl30 gl30 gl30 gl30 gl30 gl30 gl30 gl30 gl30 gl30 gl30 gl31 gl31 gl31 gl31 gl31 gl31 gl31 gl31 gl31 gl31 gl31 gl31 gl31 gl31 gl31 gl31">glWindowPos</a></li></ul></li><li class="category gl20 gl21 gl30 gl31">Client Arrays<ul><li><a class="rewritelink command gl20 gl21 gl30 gl31">glColorPointer</a></li><li><a class="rewritelink command gl20 gl21 gl30 gl31">glDisableClientState</a></li><li><a class="rewritelink command gl20 gl21 gl30 gl31">glEnableClientState</a></li><li><a class="rewritelink command gl20 gl21 gl30 gl31">glFogCoordPointer</a></li><li><a class="rewritelink command gl20 gl21 gl30 gl31">glIndexPointer</a></li><li><a class="rewritelink command gl20 gl21 gl30 gl31">glInterleavedArrays</a></li><li><a class="rewritelink command gl20 gl21 gl30 gl31">glNormalPointer</a></li><li><a class="rewritelink command gl20 gl21 gl30 gl31">glPopClientAttrib</a></li><li><a class="rewritelink command gl20 gl21 gl30 gl31">glPushClientAttrib</a></li><li><a class="rewritelink command gl20 gl21 gl30 gl31">glSecondaryColorPointer</a></li><li><a class="rewritelink command gl20 gl21 gl30 gl31">glTexCoordPointer</a></li><li><a class="rewritelink command gl20 gl21 gl30 gl31">glVertexPointer</a></li></ul></li><li class="category gl20 gl21 gl30 gl31">Fixed Function<ul><li><a class="rewritelink command gl20 gl21 gl30 gl31">glAccum</a></li><li><a class="rewritelink command gl20 gl21 gl30 gl31">glAlphaFunc</a></li><li><a class="rewritelink command gl20 gl21 gl30 gl31">glClearAccum</a></li><li><a class="rewritelink command gl20 gl21 gl30 gl31">glColorMaterial</a></li><li><a class="rewritelink command gl20 gl20 gl21 gl21 gl30 gl30 gl31 gl31">glEdgeFlag</a></li><li><a class="rewritelink command gl20 gl21 gl30 gl31">glEdgeFlagPointer</a></li><li><a class="rewritelink command gl20 gl20 gl21 gl21 gl30 gl30 gl31 gl31">glGetLight</a></li><li><a class="rewritelink command gl20 gl20 gl21 gl21 gl30 gl30 gl31 gl31">glGetMaterial</a></li><li><a class="rewritelink command gl20 gl20 gl21 gl21 gl30 gl30 gl31 gl31">glGetTexEnv</a></li><li><a class="rewritelink command gl20 gl20 gl20 gl21 gl21 gl21 gl30 gl30 gl30 gl31 gl31 gl31">glGetTexGen</a></li><li><a class="rewritelink command gl20 gl21 gl30 gl31">glIndexMask</a></li><li><a class="rewritelink command gl20 gl20 gl20 gl20 gl21 gl21 gl21 gl21 gl30 gl30 gl30 gl30 gl31 gl31 gl31 gl31">glLight</a></li><li><a class="rewritelink command gl20 gl20 gl20 gl20 gl21 gl21 gl21 gl21 gl30 gl30 gl30 gl30 gl31 gl31 gl31 gl31">glLightModel</a></li><li><a class="rewritelink command gl20 gl21 gl30 gl31">glPopAttrib</a></li><li><a class="rewritelink command gl20 gl21 gl30 gl31">glPushAttrib</a></li><li><a class="rewritelink command gl20 gl21 gl30 gl31">glShadeModel</a></li><li><a class="rewritelink command gl20 gl20 gl20 gl20 gl21 gl21 gl21 gl21 gl30 gl30 gl30 gl30 gl31 gl31 gl31 gl31">glTexEnv</a></li><li><a class="rewritelink command gl20 gl20 gl20 gl20 gl20 gl20 gl21 gl21 gl21 gl21 gl21 gl21 gl30 gl30 gl30 gl30 gl30 gl30 gl31 gl31 gl31 gl31 gl31 gl31">glTexGen</a></li></ul></li><li class="category gl20 gl21 gl30 gl31">Matrix State<ul><li><a class="rewritelink command gl20 gl21 gl30 gl31">glFrustum</a></li><li><a class="rewritelink command gl20 gl21 gl30 gl31">glLoadIdentity</a></li><li><a class="rewritelink command gl20 gl20 gl21 gl21 gl30 gl30 gl31 gl31">glLoadMatrix</a></li><li><a class="rewritelink command gl20 gl20 gl21 gl21 gl30 gl30 gl31 gl31">glLoadTransposeMatrix</a></li><li><a class="rewritelink command gl20 gl21 gl30 gl31">glMatrixMode</a></li><li><a class="rewritelink command gl20 gl20 gl21 gl21 gl30 gl30 gl31 gl31">glMultMatrix</a></li><li><a class="rewritelink command gl20 gl20 gl21 gl21 gl30 gl30 gl31 gl31">glMultTransposeMatrix</a></li><li><a class="rewritelink command gl20 gl21 gl30 gl31">glOrtho</a></li><li><a class="rewritelink command gl20 gl21 gl30 gl31">glPopMatrix</a></li><li><a class="rewritelink command gl20 gl21 gl30 gl31">glPushMatrix</a></li><li><a class="rewritelink command gl20 gl20 gl21 gl21 gl30 gl30 gl31 gl31">glRotate</a></li><li><a class="rewritelink command gl20 gl20 gl21 gl21 gl30 gl30 gl31 gl31">glScale</a></li><li><a class="rewritelink command gl20 gl20 gl21 gl21 gl30 gl30 gl31 gl31">glTranslate</a></li></ul></li><li class="category gl20 gl21 gl30 gl31">GL2 Textures<ul><li><a class="rewritelink command gl20 gl21 gl30 gl31">glAreTexturesResident</a></li><li><a class="rewritelink command gl20 gl21 gl30 gl31">glClientActiveTexture</a></li><li><a class="rewritelink command gl20 gl20 gl20 gl21 gl21 gl21 gl30 gl30 gl30 gl31 gl31 gl31">glPixelMap</a></li><li><a class="rewritelink command gl20 gl20 gl21 gl21 gl30 gl30 gl31 gl31">glPixelTransfer</a></li><li><a class="rewritelink command gl20 gl21 gl30 gl31">glPrioritizeTextures</a></li></ul></li><li class="category gl20 gl21 gl30 gl31">Call Lists<ul><li><a class="rewritelink command gl20 gl21 gl30 gl31">glCallList</a></li><li><a class="rewritelink command gl20 gl21 gl30 gl31">glCallLists</a></li><li><a class="rewritelink command gl20 gl21 gl30 gl31">glDeleteLists</a></li><li><a class="rewritelink command gl20 gl21 gl30 gl31">glEndList</a></li><li><a class="rewritelink command gl20 gl21 gl30 gl31">glGenLists</a></li><li><a class="rewritelink command gl20 gl21 gl30 gl31">glIsList</a></li><li><a class="rewritelink command gl20 gl21 gl30 gl31">glListBase</a></li><li><a class="rewritelink command gl20 gl21 gl30 gl31">glNewList</a></li></ul></li><li class="category gl43 gl44 gl45 gl20 gl21 gl30 gl31 es31">Debug<ul><li><a class="rewritelink command gl43 gl44 gl45">glDebugMessageCallback</a></li><li><a class="rewritelink command gl43 gl44 gl45">glDebugMessageControl</a></li><li><a class="rewritelink command gl43 gl44 gl45">glDebugMessageInsert</a></li><li><a class="rewritelink command gl43 gl44 gl45">glGetDebugMessageLog</a></li><li><a class="rewritelink command gl43 gl44 gl45">glGetObjectLabel</a></li><li><a class="rewritelink command gl43 gl44 gl45">glGetObjectPtrLabel</a></li><li><a class="rewritelink command gl20 gl21 gl30 gl31 gl43 gl44 gl45">glGetPointerv</a></li><li><a class="rewritelink command es31 gl43 gl44 gl45">glGetProgramInterface</a></li><li><a class="rewritelink command gl43 gl44 gl45">glObjectLabel</a></li><li><a class="rewritelink command gl43 gl44 gl45">glObjectPtrLabel</a></li><li><a class="rewritelink command gl43 gl44 gl45">glPopDebugGroup</a></li><li><a class="rewritelink command gl43 gl44 gl45">glPushDebugGroup</a></li></ul></li></ul> <ul id="glsl_command_categories"><li class="category el30 el31 sl33 sl40 sl41 sl42 sl43 sl44 sl45">Trigonometry<ul><li><a class="rewritelink command el30 el31 sl33 sl40 sl41 sl42 sl43 sl44 sl45">acos</a></li><li><a class="rewritelink command el30 el31 sl33 sl40 sl41 sl42 sl43 sl44 sl45">acosh</a></li><li><a class="rewritelink command el30 el31 sl33 sl40 sl41 sl42 sl43 sl44 sl45">asin</a></li><li><a class="rewritelink command el30 el31 sl33 sl40 sl41 sl42 sl43 sl44 sl45">asinh</a></li><li><a class="rewritelink command el30 el31 sl33 sl40 sl41 sl42 sl43 sl44 sl45">atan</a></li><li><a class="rewritelink command el30 el31 sl33 sl40 sl41 sl42 sl43 sl44 sl45">atanh</a></li><li><a class="rewritelink command el30 el31 sl33 sl40 sl41 sl42 sl43 sl44 sl45">cos</a></li><li><a class="rewritelink command el30 el31 sl33 sl40 sl41 sl42 sl43 sl44 sl45">cosh</a></li><li><a class="rewritelink command el30 el31 sl33 sl40 sl41 sl42 sl43 sl44 sl45">degrees</a></li><li><a class="rewritelink command el30 el31 sl33 sl40 sl41 sl42 sl43 sl44 sl45">radians</a></li><li><a class="rewritelink command el30 el31 sl33 sl40 sl41 sl42 sl43 sl44 sl45">sin</a></li><li><a class="rewritelink command el30 el31 sl33 sl40 sl41 sl42 sl43 sl44 sl45">sinh</a></li><li><a class="rewritelink command el30 el31 sl33 sl40 sl41 sl42 sl43 sl44 sl45">tan</a></li><li><a class="rewritelink command el30 el31 sl33 sl40 sl41 sl42 sl43 sl44 sl45">tanh</a></li></ul></li><li class="category el30 el31 sl33 sl40 sl41 sl42 sl43 sl44 sl45">Mathematics<ul><li><a class="rewritelink command el30 el31 sl33 sl40 sl41 sl42 sl43 sl44 sl45">abs</a></li><li><a class="rewritelink command el30 el31 sl33 sl40 sl41 sl42 sl43 sl44 sl45">ceil</a></li><li><a class="rewritelink command el30 el31 sl33 sl40 sl41 sl42 sl43 sl44 sl45">clamp</a></li><li><a class="rewritelink command el30 el30 el30 el31 el31 el31 sl33 sl33 sl33 sl40 sl40 sl40 sl41 sl41 sl41 sl42 sl42 sl42 sl43 sl43 sl43 sl44 sl44 sl44 sl45 sl45 sl45">dFdx</a></li><li><a class="rewritelink command el30 el30 el30 el31 el31 el31 sl33 sl33 sl33 sl40 sl40 sl40 sl41 sl41 sl41 sl42 sl42 sl42 sl43 sl43 sl43 sl44 sl44 sl44 sl45 sl45 sl45">dFdy</a></li><li><a class="rewritelink command el30 el31 sl33 sl40 sl41 sl42 sl43 sl44 sl45">exp</a></li><li><a class="rewritelink command el30 el31 sl33 sl40 sl41 sl42 sl43 sl44 sl45">exp2</a></li><li><a class="rewritelink command el30 el31 sl33 sl40 sl41 sl42 sl43 sl44 sl45">floor</a></li><li><a class="rewritelink command el30 el31 sl33 sl40 sl41 sl42 sl43 sl44 sl45">floor</a></li><li><a class="rewritelink command el31 sl40 sl41 sl42 sl43 sl44 sl45">fma</a></li><li><a class="rewritelink command el30 el31 sl33 sl40 sl41 sl42 sl43 sl44 sl45">fract</a></li><li><a class="rewritelink command el30 el30 el30 el31 el31 el31 sl33 sl33 sl33 sl40 sl40 sl40 sl41 sl41 sl41 sl42 sl42 sl42 sl43 sl43 sl43 sl44 sl44 sl44 sl45 sl45 sl45">fwidth</a></li><li><a class="rewritelink command el30 el31 sl33 sl40 sl41 sl42 sl43 sl44 sl45">inversesqrt</a></li><li><a class="rewritelink command el30 el31 sl33 sl40 sl41 sl42 sl43 sl44 sl45">isinf</a></li><li><a class="rewritelink command el30 el31 sl33 sl40 sl41 sl42 sl43 sl44 sl45">isnan</a></li><li><a class="rewritelink command el30 el31 sl33 sl40 sl41 sl42 sl43 sl44 sl45">log</a></li><li><a class="rewritelink command el30 el31 sl33 sl40 sl41 sl42 sl43 sl44 sl45">log2</a></li><li><a class="rewritelink command el30 el31 sl33 sl40 sl41 sl42 sl43 sl44 sl45">max</a></li><li><a class="rewritelink command el30 el31 sl33 sl40 sl41 sl42 sl43 sl44 sl45">min</a></li><li><a class="rewritelink command el30 el31 sl33 sl40 sl41 sl42 sl43 sl44 sl45">mix</a></li><li><a class="rewritelink command el30 el31 sl33 sl40 sl41 sl42 sl43 sl44 sl45">mod</a></li><li><a class="rewritelink command el30 el31 sl33 sl40 sl41 sl42 sl43 sl44 sl45">modf</a></li><li><a class="rewritelink command sl33 sl33 sl33 sl33 sl33 sl40 sl40 sl40 sl40 sl40 sl41 sl41 sl41 sl41 sl41 sl42 sl42 sl42 sl42 sl42 sl43 sl43 sl43 sl43 sl43 sl44 sl44 sl44 sl44 sl44 sl45 sl45 sl45 sl45 sl45">noise</a></li><li><a class="rewritelink command el30 el31 sl33 sl40 sl41 sl42 sl43 sl44 sl45">pow</a></li><li><a class="rewritelink command el30 el31 sl33 sl40 sl41 sl42 sl43 sl44 sl45">round</a></li><li><a class="rewritelink command el30 el31 sl33 sl40 sl41 sl42 sl43 sl44 sl45">roundEven</a></li><li><a class="rewritelink command el30 el31 sl33 sl40 sl41 sl42 sl43 sl44 sl45">sign</a></li><li><a class="rewritelink command el30 el31 sl33 sl40 sl41 sl42 sl43 sl44 sl45">smoothstep</a></li><li><a class="rewritelink command el30 el31 sl33 sl40 sl41 sl42 sl43 sl44 sl45">sqrt</a></li><li><a class="rewritelink command el30 el31 sl33 sl40 sl41 sl42 sl43 sl44 sl45">step</a></li><li><a class="rewritelink command el30 el31 sl33 sl40 sl41 sl42 sl43 sl44 sl45">trunc</a></li></ul></li><li class="category el30 el31 sl33 sl40 sl41 sl42 sl43 sl44 sl45">Floating-Point<ul><li><a class="rewritelink command el30 el30 el31 el31 sl33 sl33 sl40 sl40 sl41 sl41 sl42 sl42 sl43 sl43 sl44 sl44 sl45 sl45">floatBitsToInt</a></li><li><a class="rewritelink command el31 sl40 sl41 sl42 sl43 sl44 sl45">frexp</a></li><li><a class="rewritelink command el30 el30 el31 el31 sl33 sl33 sl40 sl40 sl41 sl41 sl42 sl42 sl43 sl43 sl44 sl44 sl45 sl45">intBitsToFloat</a></li><li><a class="rewritelink command el31 sl40 sl41 sl42 sl43 sl44 sl45">ldexp</a></li><li><a class="rewritelink command sl40 sl41 sl42 sl43 sl44 sl45">packDouble2x32</a></li><li><a class="rewritelink command el30 el31 sl42 sl43 sl44 sl45">packHalf2x16</a></li><li><a class="rewritelink command el30 el30 el30 el30 el31 el31 el31 el31 sl41 sl41 sl41 sl41 sl42 sl42 sl42 sl42 sl43 sl43 sl43 sl43 sl44 sl44 sl44 sl44 sl45 sl45 sl45 sl45">packUnorm</a></li><li><a class="rewritelink command sl40 sl41 sl42 sl43 sl44 sl45">unpackDouble2x32</a></li><li><a class="rewritelink command el30 el31 sl42 sl43 sl44 sl45">unpackHalf2x16</a></li><li><a class="rewritelink command el30 el30 el30 el30 el31 el31 el31 el31 sl41 sl41 sl41 sl41 sl42 sl42 sl42 sl42 sl43 sl43 sl43 sl43 sl44 sl44 sl44 sl44 sl45 sl45 sl45 sl45">unpackUnorm</a></li></ul></li><li class="category sl33 sl40 sl41 sl42 sl43 sl44 sl45 el30 el31">Built-In Variables<ul><li><a class="rewritelink command sl33 sl40 sl41 sl42 sl43 sl44 sl45">gl_ClipDistance</a></li><li><a class="rewritelink command sl45">gl_CullDistance</a></li><li><a class="rewritelink command el30 el31 sl33 sl40 sl41 sl42 sl43 sl44 sl45">gl_FragCoord</a></li><li><a class="rewritelink command el30 el31 sl33 sl40 sl41 sl42 sl43 sl44 sl45">gl_FragDepth</a></li><li><a class="rewritelink command el30 el31 sl33 sl40 sl41 sl42 sl43 sl44 sl45">gl_FrontFacing</a></li><li><a class="rewritelink command el31 sl43 sl44 sl45">gl_GlobalInvocationID</a></li><li><a class="rewritelink command sl45">gl_HelperInvocation</a></li><li><a class="rewritelink command el30 el31 sl33 sl40 sl41 sl42 sl43 sl44 sl45">gl_InstanceID</a></li><li><a class="rewritelink command sl33 sl40 sl41 sl42 sl43 sl44 sl45">gl_InvocationID</a></li><li><a class="rewritelink command sl33 sl40 sl41 sl42 sl43 sl44 sl45">gl_Layer</a></li><li><a class="rewritelink command el31 sl43 sl44 sl45">gl_LocalInvocationID</a></li><li><a class="rewritelink command el31 sl43 sl44 sl45">gl_LocalInvocationIndex</a></li><li><a class="rewritelink command sl40 sl41 sl42 sl43 sl44 sl45">gl_NumSamples</a></li><li><a class="rewritelink command el31 sl43 sl44 sl45">gl_NumWorkGroups</a></li><li><a class="rewritelink command sl40 sl41 sl42 sl43 sl44 sl45">gl_PatchVerticesIn</a></li><li><a class="rewritelink command el30 el31 sl33 sl40 sl41 sl42 sl43 sl44 sl45">gl_PointCoord</a></li><li><a class="rewritelink command el30 el31 sl33 sl40 sl41 sl42 sl43 sl44 sl45">gl_PointSize</a></li><li><a class="rewritelink command el30 el31 sl33 sl40 sl41 sl42 sl43 sl44 sl45">gl_Position</a></li><li><a class="rewritelink command sl33 sl40 sl41 sl42 sl43 sl44 sl45">gl_PrimitiveID</a></li><li><a class="rewritelink command sl33 sl40 sl41 sl42 sl43 sl44 sl45">gl_PrimitiveIDIn</a></li><li><a class="rewritelink command sl40 sl41 sl42 sl43 sl44 sl45">gl_SampleID</a></li><li><a class="rewritelink command sl40 sl41 sl42 sl43 sl44 sl45">gl_SampleMask</a></li><li><a class="rewritelink command sl40 sl41 sl42 sl43 sl44 sl45">gl_SampleMaskIn</a></li><li><a class="rewritelink command sl40 sl41 sl42 sl43 sl44 sl45">gl_SamplePosition</a></li><li><a class="rewritelink command sl40 sl41 sl42 sl43 sl44 sl45">gl_TessCoord</a></li><li><a class="rewritelink command sl40 sl41 sl42 sl43 sl44 sl45">gl_TessLevelInner</a></li><li><a class="rewritelink command sl40 sl41 sl42 sl43 sl44 sl45">gl_TessLevelOuter</a></li><li><a class="rewritelink command el30 el31 sl33 sl40 sl41 sl42 sl43 sl44 sl45">gl_VertexID</a></li><li><a class="rewritelink command sl33 sl40 sl41 sl42 sl43 sl44 sl45">gl_ViewportIndex</a></li><li><a class="rewritelink command el31 sl43 sl44 sl45">gl_WorkGroupID</a></li><li><a class="rewritelink command el31 sl43 sl44 sl45">gl_WorkGroupSize</a></li></ul></li><li class="category el30 el31 sl33 sl40 sl41 sl42 sl43 sl44 sl45">Vector<ul><li><a class="rewritelink command el30 el31 sl33 sl40 sl41 sl42 sl43 sl44 sl45">cross</a></li><li><a class="rewritelink command el30 el31 sl33 sl40 sl41 sl42 sl43 sl44 sl45">distance</a></li><li><a class="rewritelink command el30 el31 sl33 sl40 sl41 sl42 sl43 sl44 sl45">dot</a></li><li><a class="rewritelink command el30 el31 sl33 sl40 sl41 sl42 sl43 sl44 sl45">equal</a></li><li><a class="rewritelink command el30 el31 sl33 sl40 sl41 sl42 sl43 sl44 sl45">faceforward</a></li><li><a class="rewritelink command el30 el31 sl33 sl40 sl41 sl42 sl43 sl44 sl45">length</a></li><li><a class="rewritelink command el30 el31 sl33 sl40 sl41 sl42 sl43 sl44 sl45">normalize</a></li><li><a class="rewritelink command el30 el31 sl33 sl40 sl41 sl42 sl43 sl44 sl45">notEqual</a></li><li><a class="rewritelink command el30 el31 sl33 sl40 sl41 sl42 sl43 sl44 sl45">reflect</a></li><li><a class="rewritelink command el30 el31 sl33 sl40 sl41 sl42 sl43 sl44 sl45">refract</a></li></ul></li><li class="category el30 el31 sl33 sl40 sl41 sl42 sl43 sl44 sl45">Component Comparison<ul><li><a class="rewritelink command el30 el31 sl33 sl40 sl41 sl42 sl43 sl44 sl45">all</a></li><li><a class="rewritelink command el30 el31 sl33 sl40 sl41 sl42 sl43 sl44 sl45">any</a></li><li><a class="rewritelink command el30 el31 sl33 sl40 sl41 sl42 sl43 sl44 sl45">greaterThan</a></li><li><a class="rewritelink command el30 el31 sl33 sl40 sl41 sl42 sl43 sl44 sl45">greaterThanEqual</a></li><li><a class="rewritelink command el30 el31 sl33 sl40 sl41 sl42 sl43 sl44 sl45">lessThan</a></li><li><a class="rewritelink command el30 el31 sl33 sl40 sl41 sl42 sl43 sl44 sl45">lessThanEqual</a></li><li><a class="rewritelink command el30 el31 sl33 sl40 sl41 sl42 sl43 sl44 sl45">not</a></li></ul></li><li class="category sl40 sl41 sl42 sl43 sl44 sl45 sl33">Geometry Shader<ul><li><a class="rewritelink command sl40 sl41 sl42 sl43 sl44 sl45">EmitStreamVertex</a></li><li><a class="rewritelink command sl33 sl40 sl41 sl42 sl43 sl44 sl45">EmitVertex</a></li><li><a class="rewritelink command sl33 sl40 sl41 sl42 sl43 sl44 sl45">EndPrimitive</a></li><li><a class="rewritelink command sl40 sl41 sl42 sl43 sl44 sl45">EndStreamPrimitive</a></li></ul></li><li class="category sl40 sl41 sl42 sl43 sl44 sl45 el30 el31 sl33">Texture Sampling<ul><li><a class="rewritelink command sl40 sl41 sl42 sl43 sl44 sl45">interpolateAtCentroid</a></li><li><a class="rewritelink command sl40 sl41 sl42 sl43 sl44 sl45">interpolateAtOffset</a></li><li><a class="rewritelink command sl40 sl41 sl42 sl43 sl44 sl45">interpolateAtSample</a></li><li><a class="rewritelink command el30 el31 sl33 sl40 sl41 sl42 sl43 sl44 sl45">texelFetch</a></li><li><a class="rewritelink command el30 el31 sl33 sl40 sl41 sl42 sl43 sl44 sl45">texelFetchOffset</a></li><li><a class="rewritelink command el30 el31 sl33 sl40 sl41 sl42 sl43 sl44 sl45">texture</a></li><li><a class="rewritelink command el31 sl40 sl41 sl42 sl43 sl44 sl45">textureGather</a></li><li><a class="rewritelink command el31 sl40 sl41 sl42 sl43 sl44 sl45">textureGatherOffset</a></li><li><a class="rewritelink command sl40 sl41 sl42 sl43 sl44 sl45">textureGatherOffsets</a></li><li><a class="rewritelink command el30 el31 sl33 sl40 sl41 sl42 sl43 sl44 sl45">textureGrad</a></li><li><a class="rewritelink command el30 el31 sl33 sl40 sl41 sl42 sl43 sl44 sl45">textureGradOffset</a></li><li><a class="rewritelink command el30 el31 sl33 sl40 sl41 sl42 sl43 sl44 sl45">textureLod</a></li><li><a class="rewritelink command el30 el31 sl33 sl40 sl41 sl42 sl43 sl44 sl45">textureLodOffset</a></li><li><a class="rewritelink command el30 el31 sl33 sl40 sl41 sl42 sl43 sl44 sl45">textureOffset</a></li><li><a class="rewritelink command el30 el31 sl33 sl40 sl41 sl42 sl43 sl44 sl45">textureProj</a></li><li><a class="rewritelink command el30 el31 sl33 sl40 sl41 sl42 sl43 sl44 sl45">textureProjGrad</a></li><li><a class="rewritelink command el30 el31 sl33 sl40 sl41 sl42 sl43 sl44 sl45">textureProjGradOffset</a></li><li><a class="rewritelink command el30 el31 sl33 sl40 sl41 sl42 sl43 sl44 sl45">textureProjLod</a></li><li><a class="rewritelink command el30 el31 sl33 sl40 sl41 sl42 sl43 sl44 sl45">textureProjLodOffset</a></li><li><a class="rewritelink command el30 el31 sl33 sl40 sl41 sl42 sl43 sl44 sl45">textureProjOffset</a></li><li><a class="rewritelink command sl43 sl44 sl45">textureQueryLevels</a></li><li><a class="rewritelink command sl40 sl41 sl42 sl43 sl44 sl45">textureQueryLod</a></li><li><a class="rewritelink command sl45">textureSamples</a></li><li><a class="rewritelink command el30 el31 sl33 sl40 sl41 sl42 sl43 sl44 sl45">textureSize</a></li></ul></li><li class="category el30 el31 sl33 sl40 sl41 sl42 sl43 sl44 sl45">Matrix<ul><li><a class="rewritelink command el30 el31 sl33 sl40 sl41 sl42 sl43 sl44 sl45">determinant</a></li><li><a class="rewritelink command el31 sl43 sl44 sl45">groupMemoryBarrier</a></li><li><a class="rewritelink command el30 el31 sl33 sl40 sl41 sl42 sl43 sl44 sl45">inverse</a></li><li><a class="rewritelink command el30 el31 sl33 sl40 sl41 sl42 sl43 sl44 sl45">matrixCompMult</a></li><li><a class="rewritelink command el30 el31 sl33 sl40 sl41 sl42 sl43 sl44 sl45">outerProduct</a></li><li><a class="rewritelink command el30 el31 sl33 sl40 sl41 sl42 sl43 sl44 sl45">transpose</a></li></ul></li><li class="category el31 sl40 sl41 sl42 sl43 sl44 sl45">Integer<ul><li><a class="rewritelink command el31 sl40 sl41 sl42 sl43 sl44 sl45">bitCount</a></li><li><a class="rewritelink command el31 sl40 sl41 sl42 sl43 sl44 sl45">bitfieldExtract</a></li><li><a class="rewritelink command el31 sl40 sl41 sl42 sl43 sl44 sl45">bitfieldInsert</a></li><li><a class="rewritelink command el31 sl40 sl41 sl42 sl43 sl44 sl45">bitfieldReverse</a></li><li><a class="rewritelink command el31 sl40 sl41 sl42 sl43 sl44 sl45">findLSB</a></li><li><a class="rewritelink command el31 sl40 sl41 sl42 sl43 sl44 sl45">findMSB</a></li><li><a class="rewritelink command el31 sl40 sl41 sl42 sl43 sl44 sl45">uaddCarry</a></li><li><a class="rewritelink command el31 sl40 sl41 sl42 sl43 sl44 sl45">umulExtended</a></li><li><a class="rewritelink command el31 sl40 sl41 sl42 sl43 sl44 sl45">usubBorrow</a></li></ul></li><li class="category el31 sl42 sl43 sl44 sl45">Image<ul><li><a class="rewritelink command el31 sl42 sl43 sl44 sl45">imageAtomicAdd</a></li><li><a class="rewritelink command el31 sl42 sl43 sl44 sl45">imageAtomicAnd</a></li><li><a class="rewritelink command el31 sl42 sl43 sl44 sl45">imageAtomicCompSwap</a></li><li><a class="rewritelink command el31 sl42 sl43 sl44 sl45">imageAtomicExchange</a></li><li><a class="rewritelink command el31 sl42 sl43 sl44 sl45">imageAtomicMax</a></li><li><a class="rewritelink command el31 sl42 sl43 sl44 sl45">imageAtomicMin</a></li><li><a class="rewritelink command el31 sl42 sl43 sl44 sl45">imageAtomicOr</a></li><li><a class="rewritelink command el31 sl42 sl43 sl44 sl45">imageAtomicXor</a></li><li><a class="rewritelink command el31 sl42 sl43 sl44 sl45">imageLoad</a></li><li><a class="rewritelink command sl45">imageSamples</a></li><li><a class="rewritelink command el31 sl43 sl44 sl45">imageSize</a></li><li><a class="rewritelink command el31 sl42 sl43 sl44 sl45">imageStore</a></li></ul></li><li class="category el31 sl43 sl44 sl45 sl42">Atomic<ul><li><a class="rewritelink command el31 sl43 sl44 sl45">atomicAdd</a></li><li><a class="rewritelink command el31 sl43 sl44 sl45">atomicAnd</a></li><li><a class="rewritelink command el31 sl43 sl44 sl45">atomicCompSwap</a></li><li><a class="rewritelink command el31 sl42 sl43 sl44 sl45">atomicCounter</a></li><li><a class="rewritelink command el31 sl42 sl43 sl44 sl45">atomicCounterDecrement</a></li><li><a class="rewritelink command el31 sl42 sl43 sl44 sl45">atomicCounterIncrement</a></li><li><a class="rewritelink command el31 sl43 sl44 sl45">atomicExchange</a></li><li><a class="rewritelink command el31 sl43 sl44 sl45">atomicMax</a></li><li><a class="rewritelink command el31 sl43 sl44 sl45">atomicMin</a></li><li><a class="rewritelink command el31 sl43 sl44 sl45">atomicOr</a></li><li><a class="rewritelink command el31 sl43 sl44 sl45">atomicXor</a></li></ul></li><li class="category el31 sl40 sl41 sl42 sl43 sl44 sl45">Memory Barrier<ul><li><a class="rewritelink command el31 sl40 sl41 sl42 sl43 sl44 sl45">barrier</a></li><li><a class="rewritelink command el31 sl43 sl44 sl45">groupMemoryBarrier</a></li><li><a class="rewritelink command el31 sl40 sl41 sl42 sl43 sl44 sl45">memoryBarrier</a></li><li><a class="rewritelink command el31 sl43 sl44 sl45">memoryBarrierAtomicCounter</a></li><li><a class="rewritelink command el31 sl43 sl44 sl45">memoryBarrierBuffer</a></li><li><a class="rewritelink command el31 sl43 sl44 sl45">memoryBarrierImage</a></li><li><a class="rewritelink command el31 sl43 sl44 sl45">memoryBarrierShared</a></li></ul></li></ul> </div> <div id="khronos"> <div id="command_versions"><a href="../gl4/glReadPixels">OpenGL 4</a><br><a href="../gl3/glReadPixels">OpenGL 3</a><br><a href="../gl2/glReadPixels">OpenGL 2</a><br><a class="current" href="../es3/glReadPixels">OpenGL ES 3</a><br><a href="../es2/glReadPixels">OpenGL ES 2</a><br></div> <h1 id="command_title">glReadPixels</h1> <div class="refentry" id="glReadPixels"> <div class="titlepage"></div> <div class="refnamediv"> <h2>Name</h2> <p>glReadPixels &#8212; read a block of pixels from the frame buffer</p> </div> <div class="refsynopsisdiv"> <h2>C Specification</h2> <div class="funcsynopsis"> <table style="border: 0; cellspacing: 0; cellpadding: 0;" class="funcprototype-table"> <tr> <td> <code class="funcdef">void <strong class="fsfunc">glReadPixels</strong>(</code> </td> <td>GLint <var class="pdparam">x</var>, </td> </tr> <tr> <td> </td> <td>GLint <var class="pdparam">y</var>, </td> </tr> <tr> <td> </td> <td>GLsizei <var class="pdparam">width</var>, </td> </tr> <tr> <td> </td> <td>GLsizei <var class="pdparam">height</var>, </td> </tr> <tr> <td> </td> <td>GLenum <var class="pdparam">format</var>, </td> </tr> <tr> <td> </td> <td>GLenum <var class="pdparam">type</var>, </td> </tr> <tr> <td> </td> <td>GLvoid * <var class="pdparam">data</var><code>)</code>;</td> </tr> </table> <div class="funcprototype-spacer"> </div> </div> </div> <div class="refsect1" id="parameters"> <h2>Parameters</h2> <div class="variablelist"> <dl class="variablelist"> <dt> <span class="term"><em class="parameter"><code>x</code></em>, </span> <span class="term"> <em class="parameter"> <code>y</code> </em> </span> </dt> <dd> <p> Specify the window coordinates of the first pixel that is read from the frame buffer. This location is the lower left corner of a rectangular block of pixels. </p> </dd> <dt> <span class="term"><em class="parameter"><code>width</code></em>, </span> <span class="term"> <em class="parameter"> <code>height</code> </em> </span> </dt> <dd> <p> Specify the dimensions of the pixel rectangle. <em class="parameter"><code>width</code></em> and <em class="parameter"><code>height</code></em> of one correspond to a single pixel. </p> </dd> <dt> <span class="term"> <em class="parameter"> <code>format</code> </em> </span> </dt> <dd> <p> Specifies the format of the pixel data. The following symbolic values are accepted: <code class="constant">GL_RGBA</code>, and <code class="constant">GL_RGBA_INTEGER</code>. An implementation-chosen format will also be accepted. This can be queried with <a class="citerefentry" href="glGet"><span class="citerefentry"><span class="refentrytitle">glGet</span></span></a> and <code class="constant">GL_IMPLEMENTATION_COLOR_READ_FORMAT</code>. </p> </dd> <dt> <span class="term"> <em class="parameter"> <code>type</code> </em> </span> </dt> <dd> <p> Specifies the data type of the pixel data. Must be one of <code class="constant">GL_UNSIGNED_BYTE</code>, <code class="constant">GL_UNSIGNED_INT</code>, <code class="constant">GL_UNSIGNED_INT_2_10_10_10_REV</code>, <code class="constant">GL_INT</code>, or <code class="constant">GL_FLOAT</code>. An implementation-chosen type will also be accepted. This can be queried with <a class="citerefentry" href="glGet"><span class="citerefentry"><span class="refentrytitle">glGet</span></span></a> and <code class="constant">GL_IMPLEMENTATION_COLOR_READ_TYPE</code>. </p> </dd> <dt> <span class="term"> <em class="parameter"> <code>data</code> </em> </span> </dt> <dd> <p> Returns the pixel data. </p> </dd> </dl> </div> </div> <div class="refsect1" id="description"> <h2>Description</h2> <p> <code class="function">glReadPixels</code> returns pixel data from the frame buffer, starting with the pixel whose lower left corner is at location (<em class="parameter"><code>x</code></em>, <em class="parameter"><code>y</code></em>), into client memory starting at location <em class="parameter"><code>data</code></em>. Several parameters control the processing of the pixel data before it is placed into client memory. These parameters are set with <a class="citerefentry" href="glPixelStorei"><span class="citerefentry"><span class="refentrytitle">glPixelStorei</span></span></a>. This reference page describes the effects on <code class="function">glReadPixels</code> of most, but not all of the parameters specified by these three commands. </p> <p> If a non-zero named buffer object is bound to the <code class="constant">GL_PIXEL_PACK_BUFFER</code> target (see <a class="citerefentry" href="glBindBuffer"><span class="citerefentry"><span class="refentrytitle">glBindBuffer</span></span></a>) while a block of pixels is requested, <em class="parameter"><code>data</code></em> is treated as a byte offset into the buffer object's data store rather than a pointer to client memory. </p> <p> <code class="function">glReadPixels</code> returns values from each pixel with lower left corner at <math overflow="scroll"> <mfenced open="(" close=")"> <mrow> <mi mathvariant="italic">x</mi> <mo>+</mo> <mi mathvariant="italic">i</mi> </mrow> <mrow> <mi mathvariant="italic">y</mi> <mo>+</mo> <mi mathvariant="italic">j</mi> </mrow> </mfenced> </math> for <math overflow="scroll"> <mrow> <mn>0</mn> <mo><=</mo> <mi mathvariant="italic">i</mi> <mo><</mo> <mi mathvariant="italic">width</mi> </mrow> </math> and <math overflow="scroll"> <mrow> <mn>0</mn> <mo><=</mo> <mi mathvariant="italic">j</mi> <mo><</mo> <mi mathvariant="italic">height</mi> </mrow> </math>. This pixel is said to be the <math overflow="scroll"><mi mathvariant="italic">i</mi></math>th pixel in the <math overflow="scroll"><mi mathvariant="italic">j</mi></math>th row. Pixels are returned in row order from the lowest to the highest row, left to right in each row. </p> <p> <em class="parameter"><code>format</code></em> specifies the format for the returned pixel values; accepted values are <code class="constant">GL_RED</code>, <code class="constant">GL_RED_INTEGER</code>, <code class="constant">GL_RG</code>, <code class="constant">GL_RG_INTEGER</code>, <code class="constant">GL_RGB</code>, <code class="constant">GL_RGB_INTEGER</code>, <code class="constant">GL_RGBA</code>, <code class="constant">GL_RGBA_INTEGER</code>, <code class="constant">GL_LUMINANCE_ALPHA</code>, <code class="constant">GL_LUMINANCE</code>, and <code class="constant">GL_ALPHA</code> </p> <p> Finally, the indices or components are converted to the proper format, as specified by <em class="parameter"><code>type</code></em>. If <em class="parameter"><code>type</code></em> is <code class="constant">GL_FLOAT</code>, then each integer index is converted to single-precision floating-point format. </p> <p> If <em class="parameter"><code>format</code></em> is <code class="constant">GL_RED</code>, <code class="constant">GL_RG</code>, <code class="constant">GL_RGB</code>, or <code class="constant">GL_RGBA</code>, and <em class="parameter"><code>type</code></em> is not <code class="constant">GL_FLOAT</code>, each component is multiplied by the multiplier shown in the following table. If type is <code class="constant">GL_FLOAT</code>, then each component is passed as is (or converted to the client's single-precision floating-point format if it is different from the one used by the GL). </p> <p> </p> <div class="informaltable"> <table style="border-collapse: collapse; border-top: 2px solid ; border-bottom: 2px solid ; border-left: 2px solid ; border-right: 2px solid ; "> <colgroup> <col style="text-align: left; "> <col style="text-align: center; "> <col style="text-align: center; "> <col> </colgroup> <thead> <tr> <th style="text-align: left; border-right: 2px solid ; border-bottom: 2px solid ; "> <em class="parameter"><code>type</code></em> </th> <th style="text-align: center; border-right: 2px solid ; border-bottom: 2px solid ; "> <span class="bold"><strong> Index Mask </strong></span> </th> <th style="text-align: center; border-right: 2px solid ; border-bottom: 2px solid ; "> <span class="bold"><strong> Component Conversion </strong></span> </th> <td style="border-bottom: 2px solid ; " class="auto-generated"> </td> </tr> </thead> <tbody> <tr> <td style="text-align: left; border-right: 2px solid ; border-bottom: 2px solid ; "> <code class="constant">GL_UNSIGNED_BYTE</code> </td> <td style="text-align: center; border-right: 2px solid ; border-bottom: 2px solid ; "> <math overflow="scroll"> <mrow> <msup><mn>2</mn> <mn>8</mn> </msup> <mo>-</mo> <mn>1</mn> </mrow> </math> </td> <td style="text-align: center; border-right: 2px solid ; border-bottom: 2px solid ; "> <math overflow="scroll"> <mrow> <mfenced open="(" close=")"> <mrow> <msup><mn>2</mn> <mn>8</mn> </msup> <mo>-</mo> <mn>1</mn> </mrow> </mfenced> <mo>&#8290;</mo> <mi mathvariant="italic">c</mi> </mrow> </math> </td> <td style="border-bottom: 2px solid ; " class="auto-generated"> </td> </tr> <tr> <td style="text-align: left; border-right: 2px solid ; border-bottom: 2px solid ; "> <code class="constant">GL_BYTE</code> </td> <td style="text-align: center; border-right: 2px solid ; border-bottom: 2px solid ; "> <math overflow="scroll"> <mrow> <msup><mn>2</mn> <mn>7</mn> </msup> <mo>-</mo> <mn>1</mn> </mrow> </math> </td> <td style="text-align: center; border-right: 2px solid ; border-bottom: 2px solid ; "> <math overflow="scroll"> <mfrac> <mfenced open close> <mrow> <mfenced open="(" close=")"> <mrow> <msup><mn>2</mn> <mn>8</mn> </msup> <mo>-</mo> <mn>1</mn> </mrow> </mfenced> <mo>&#8290;</mo> <mi mathvariant="italic">c</mi> <mo>-</mo> <mn>1</mn> </mrow> </mfenced> <mn>2</mn> </mfrac> </math> </td> <td style="border-bottom: 2px solid ; " class="auto-generated"> </td> </tr> <tr> <td style="text-align: left; border-right: 2px solid ; border-bottom: 2px solid ; "> <code class="constant">GL_HALF_FLOAT</code> </td> <td style="text-align: center; border-right: 2px solid ; border-bottom: 2px solid ; "> none </td> <td style="text-align: center; border-right: 2px solid ; border-bottom: 2px solid ; "> <math overflow="scroll"><mi mathvariant="italic">c</mi></math> </td> <td style="border-bottom: 2px solid ; " class="auto-generated"> </td> </tr> <tr> <td style="text-align: left; border-right: 2px solid ; border-bottom: 2px solid ; "> <code class="constant">GL_FLOAT</code> </td> <td style="text-align: center; border-right: 2px solid ; border-bottom: 2px solid ; "> none </td> <td style="text-align: center; border-right: 2px solid ; border-bottom: 2px solid ; "> <math overflow="scroll"><mi mathvariant="italic">c</mi></math> </td> <td style="border-bottom: 2px solid ; " class="auto-generated"> </td> </tr> <tr> <td style="text-align: left; border-right: 2px solid ; border-bottom: 2px solid ; "> <code class="constant">GL_UNSIGNED_SHORT_5_6_5</code> </td> <td style="text-align: center; border-right: 2px solid ; border-bottom: 2px solid ; "> <math overflow="scroll"> <mrow> <msup><mn>2</mn> <mn>N</mn> </msup> <mo>-</mo> <mn>1</mn> </mrow> </math> </td> <td style="text-align: center; border-right: 2px solid ; border-bottom: 2px solid ; "> <math overflow="scroll"> <mrow> <mfenced open="(" close=")"> <mrow> <msup><mn>2</mn> <mn>N</mn> </msup> <mo>-</mo> <mn>1</mn> </mrow> </mfenced> <mo>&#8290;</mo> <mi mathvariant="italic">c</mi> </mrow> </math> </td> <td style="border-bottom: 2px solid ; " class="auto-generated"> </td> </tr> <tr> <td style="text-align: left; border-right: 2px solid ; border-bottom: 2px solid ; "> <code class="constant">GL_UNSIGNED_SHORT_4_4_4_4</code> </td> <td style="text-align: center; border-right: 2px solid ; border-bottom: 2px solid ; "> <math overflow="scroll"> <mrow> <msup><mn>2</mn> <mn>N</mn> </msup> <mo>-</mo> <mn>1</mn> </mrow> </math> </td> <td style="text-align: center; border-right: 2px solid ; border-bottom: 2px solid ; "> <math overflow="scroll"> <mrow> <mfenced open="(" close=")"> <mrow> <msup><mn>2</mn> <mn>N</mn> </msup> <mo>-</mo> <mn>1</mn> </mrow> </mfenced> <mo>&#8290;</mo> <mi mathvariant="italic">c</mi> </mrow> </math> </td> <td style="border-bottom: 2px solid ; " class="auto-generated"> </td> </tr> <tr> <td style="text-align: left; border-right: 2px solid ; border-bottom: 2px solid ; "> <code class="constant">GL_UNSIGNED_SHORT_5_5_5_1</code> </td> <td style="text-align: center; border-right: 2px solid ; border-bottom: 2px solid ; "> <math overflow="scroll"> <mrow> <msup><mn>2</mn> <mn>N</mn> </msup> <mo>-</mo> <mn>1</mn> </mrow> </math> </td> <td style="text-align: center; border-right: 2px solid ; border-bottom: 2px solid ; "> <math overflow="scroll"> <mrow> <mfenced open="(" close=")"> <mrow> <msup><mn>2</mn> <mn>N</mn> </msup> <mo>-</mo> <mn>1</mn> </mrow> </mfenced> <mo>&#8290;</mo> <mi mathvariant="italic">c</mi> </mrow> </math> </td> <td style="border-bottom: 2px solid ; " class="auto-generated"> </td> </tr> <tr> <td style="text-align: left; border-right: 2px solid ; border-bottom: 2px solid ; "> <code class="constant">GL_UNSIGNED_INT_2_10_10_10_REV</code> </td> <td style="text-align: center; border-right: 2px solid ; border-bottom: 2px solid ; "> <math overflow="scroll"> <mrow> <msup><mn>2</mn> <mn>N</mn> </msup> <mo>-</mo> <mn>1</mn> </mrow> </math> </td> <td style="text-align: center; border-right: 2px solid ; border-bottom: 2px solid ; "> <math overflow="scroll"> <mrow> <mfenced open="(" close=")"> <mrow> <msup><mn>2</mn> <mn>N</mn> </msup> <mo>-</mo> <mn>1</mn> </mrow> </mfenced> <mo>&#8290;</mo> <mi mathvariant="italic">c</mi> </mrow> </math> </td> <td style="border-bottom: 2px solid ; " class="auto-generated"> </td> </tr> <tr> <td style="text-align: left; border-right: 2px solid ; border-bottom: 2px solid ; "> <code class="constant">GL_UNSIGNED_INT_10F_11F_11F_REV</code> </td> <td style="text-align: center; border-right: 2px solid ; border-bottom: 2px solid ; "> -- </td> <td style="text-align: center; border-right: 2px solid ; border-bottom: 2px solid ; "> Special </td> <td style="border-bottom: 2px solid ; " class="auto-generated"> </td> </tr> <tr> <td style="text-align: left; border-right: 2px solid ; "> <code class="constant">GL_UNSIGNED_INT_5_9_9_9_REV</code> </td> <td style="text-align: center; border-right: 2px solid ; "> -- </td> <td style="text-align: center; border-right: 2px solid ; "> Special </td> <td class="auto-generated"> </td> </tr> </tbody> </table> </div> <p> Return values are placed in memory as follows. If <em class="parameter"><code>format</code></em> is <code class="constant">GL_RED</code>, or <code class="constant">GL_RED_INTEGER</code>, a single value is returned and the data for the <math overflow="scroll"><mi mathvariant="italic">i</mi></math>th pixel in the <math overflow="scroll"><mi mathvariant="italic">j</mi></math>th row is placed in location <math overflow="scroll"> <mrow> <mfenced open="(" close=")"> <mi mathvariant="italic">j</mi> </mfenced> <mo>&#8290;</mo> <mi mathvariant="italic">width</mi> <mo>+</mo> <mi mathvariant="italic">i</mi> </mrow> </math>. <code class="constant">GL_RG</code> and <code class="constant">GL_RG_INTEGER</code> return two values, <code class="constant">GL_RGB</code> and <code class="constant">GL_RGB_INTEGER</code> return three values, <code class="constant">GL_RGBA</code> and <code class="constant">GL_RGBA_INTEGER</code> return four values for each pixel, with all values corresponding to a single pixel occupying contiguous space in <em class="parameter"><code>data</code></em>. See <a class="citerefentry" href="glPixelStorei"><span class="citerefentry"><span class="refentrytitle">glPixelStorei</span></span></a> for a description of parameters which affect the packing of data into memory. </p> </div> <div class="refsect1" id="notes"> <h2>Notes</h2> <p> Values for pixels that lie outside the window connected to the current GL context are undefined. </p> <p> If an error is generated, no change is made to the contents of <em class="parameter"><code>data</code></em>. </p> <p> Only three <em class="parameter"><code>format</code></em>/<em class="parameter"><code>type</code></em> parameter pairs are accepted. For normalized fixed point rendering surfaces, <code class="constant">GL_RGBA</code>/<code class="constant">GL_UNSIGNED_BYTE</code> is accepted. For signed integer rendering surfaces, <code class="constant">GL_RGBA_INTEGER</code>/<code class="constant">GL_INT</code> is accepted. For unsigned integer rendering surfaces, <code class="constant">GL_RGBA_INTEGER</code>/<code class="constant">GL_UNSIGNED_INT</code> is accepted. For <code class="constant">GL_RGBA10_A2</code> rendering surfaces, <code class="constant">GL_RGBA</code>/<code class="constant">GL_UNSIGNED_INT_2_10_10_10_REV</code> is accepted. The other acceptable pair can be discovered by querying <code class="constant">GL_IMPLEMENTATION_COLOR_READ_FORMAT</code> and <code class="constant">GL_IMPLEMENTATION_COLOR_READ_TYPE</code>. The implementation chosen format may also vary depending on the format of the currently bound rendering surface. </p> </div> <div class="refsect1" id="errors"> <h2>Errors</h2> <p> <code class="constant">GL_INVALID_ENUM</code> is generated if <em class="parameter"><code>format</code></em> or <em class="parameter"><code>type</code></em> is not an accepted value. </p> <p> <code class="constant">GL_INVALID_VALUE</code> is generated if either <em class="parameter"><code>width</code></em> or <em class="parameter"><code>height</code></em> is negative. </p> <p> <code class="constant">GL_INVALID_OPERATION</code> is generated if a non-zero buffer object name is bound to the <code class="constant">GL_PIXEL_PACK_BUFFER</code> target and the buffer object's data store is currently mapped. </p> <p> <code class="constant">GL_INVALID_OPERATION</code> is generated if a non-zero buffer object name is bound to the <code class="constant">GL_PIXEL_PACK_BUFFER</code> target and the data would be packed to the buffer object such that the memory writes required would exceed the data store size. </p> <p> <code class="constant">GL_INVALID_OPERATION</code> is generated if <code class="constant">GL_READ_BUFFER</code> is <code class="constant">GL_NONE</code> or if <code class="constant">GL_READ_FRAMEBUFFER_BINDING</code> is non-zero and the read buffer selects an attachment that has no image attached. </p> <p> <code class="constant">GL_INVALID_OPERATION</code> is generated if <code class="constant">GL_READ_FRAMEBUFFER_BINDING</code> is non-zero, the read framebuffer is complete, and the value of <code class="constant">GL_SAMPLE_BUFFERS</code> for the read framebuffer is greater than zero. </p> <p> <code class="constant">GL_INVALID_OPERATION</code> is generated if the readbuffer of the currently bound framebuffer is a fixed point normalized surface and <em class="parameter"><code>format</code></em> and <em class="parameter"><code>type</code></em> are neither <code class="constant">GL_RGBA</code> and <code class="constant">GL_UNSIGNED_BYTE</code>, respectively, nor the format/type pair returned by querying <code class="constant">GL_IMPLEMENTATION_COLOR_READ_FORMAT</code> and <code class="constant">GL_IMPLEMENTATION_COLOR_READ_TYPE</code>. </p> <p> <code class="constant">GL_INVALID_OPERATION</code> is generated if the readbuffer of the currently bound framebuffer is a floating point surface and <em class="parameter"><code>format</code></em> and <em class="parameter"><code>type</code></em> are neither <code class="constant">GL_RGBA</code> and <code class="constant">GL_FLOAT</code>, respectively, nor the format/type pair returned by querying <code class="constant">GL_IMPLEMENTATION_COLOR_READ_FORMAT</code> and <code class="constant">GL_IMPLEMENTATION_COLOR_READ_TYPE</code>. </p> <p> <code class="constant">GL_INVALID_OPERATION</code> is generated if the readbuffer of the currently bound framebuffer is a signed integer surface and <em class="parameter"><code>format</code></em> and <em class="parameter"><code>type</code></em> are neither <code class="constant">GL_RGBA_INTEGER</code> and <code class="constant">GL_INT</code>, respectively, nor the format/type pair returned by querying <code class="constant">GL_IMPLEMENTATION_COLOR_READ_FORMAT</code> and <code class="constant">GL_IMPLEMENTATION_COLOR_READ_TYPE</code>. </p> <p> <code class="constant">GL_INVALID_OPERATION</code> is generated if the readbuffer of the currently bound framebuffer is an unsigned integer surface and <em class="parameter"><code>format</code></em> and <em class="parameter"><code>type</code></em> are neither <code class="constant">GL_RGBA_INTEGER</code> and <code class="constant">GL_UNSIGNED_INT</code>, respectively, nor the format/type pair returned by querying <code class="constant">GL_IMPLEMENTATION_COLOR_READ_FORMAT</code> and <code class="constant">GL_IMPLEMENTATION_COLOR_READ_TYPE</code>. </p> <p> <code class="constant">GL_INVALID_FRAMEBUFFER_OPERATION</code> is generated if the currently bound framebuffer is not framebuffer complete (i.e. the return value from <a class="citerefentry" href="glCheckFramebufferStatus"><span class="citerefentry"><span class="refentrytitle">glCheckFramebufferStatus</span></span></a> is not <code class="constant">GL_FRAMEBUFFER_COMPLETE</code>). </p> </div> <div class="refsect1" id="associatedgets"> <h2>Associated Gets</h2> <p> <a class="citerefentry" href="glGet"><span class="citerefentry"><span class="refentrytitle">glGet</span></span></a> with argument <code class="constant">GL_PIXEL_PACK_BUFFER_BINDING</code> </p> </div> <div class="refsect1" id="tutorials"><h2>Tutorials</h2><p></p></div> <div class="refsect1" id="versions"> <h2>API Version Support</h2> <div class="informaltable"> <table style="border-collapse: collapse; border-top: 2px solid ; border-bottom: 2px solid ; border-left: 2px solid ; border-right: 2px solid ; "> <colgroup> <col style="text-align: left; "> <col style="text-align: center; " class="firstvers"> <col style="text-align: center; "> <col style="text-align: center; " class="lastvers"> </colgroup> <thead> <tr> <th style="text-align: left; border-right: 2px solid ; "> </th> <th style="text-align: center; border-bottom: 2px solid ; " colspan="3"> <span class="bold"><strong>OpenGL ES API Version</strong></span> </th> </tr> <tr> <th style="text-align: left; border-right: 2px solid ; border-bottom: 2px solid ; "> <span class="bold"><strong>Function Name</strong></span> </th> <th style="text-align: center; border-right: 2px solid ; border-bottom: 2px solid ; "> <span class="bold"><strong>2.0</strong></span> </th> <th style="text-align: center; border-right: 2px solid ; border-bottom: 2px solid ; "> <span class="bold"><strong>3.0</strong></span> </th> <th style="text-align: center; border-bottom: 2px solid ; "> <span class="bold"><strong>3.1</strong></span> </th> </tr> </thead> <tbody> <tr> <td style="text-align: left; border-right: 2px solid ; ">glReadPixels</td> <td style="text-align: center; border-right: 2px solid ; ">&#10004;</td> <td style="text-align: center; border-right: 2px solid ; ">&#10004;</td> <td style="text-align: center; ">&#10004;</td> </tr> </tbody> </table> </div> </div> <div class="refsect1" id="seealso"> <h2>See Also</h2> <p> <a class="citerefentry" href="glPixelStorei"><span class="citerefentry"><span class="refentrytitle">glPixelStorei</span></span></a>, <a class="citerefentry" href="glReadBuffer"><span class="citerefentry"><span class="refentrytitle">glReadBuffer</span></span></a> </p> </div> <div class="refsect1" id="Copyright"> <h2>Copyright</h2> <p> Copyright &#169; 1991-2006 Silicon Graphics, Inc. Copyright &#169; 2010-2014 Khronos Group. This document is licensed under the SGI Free Software B License. For details, see <a class="link" href="https://web.archive.org/web/20171022161616/http://oss.sgi.com/projects/FreeB/" target="_top">https://web.archive.org/web/20171022161616/http://oss.sgi.com/projects/FreeB/</a>. </p> </div> </div> </div> <div id="improvepage">Think you can improve this page? <a href="https://github.com/BSVino/docs.gl/blob/mainline/es3/glReadPixels.xhtml">Edit this page</a> on <a href="https://github.com/BSVino/docs.gl/">GitHub</a>.</div> </div> <div id="footer"> <div id="credits"><a href="https://docs.gl/">docs.gl</a> was written by <a href="https://twitter.com/VinoBS">Jorge Rodr&#237;guez</a>. Each entry is under individual copyright displayed at the bottom of that entry. 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