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Many OpenGL extensions, as well as extensions to related APIs like GLU, GLX, and WGL, have been defined by vendors and groups of vendors. This is a reliable software which displays the vendor name, the version implemented, the renderer name, and the extensions of the current OpenGL 3D accelerator. You can also FREE download Softrm Barcode Label Studio Overview of OpenGL Extension Viewer 6 ![]() OPENGL EXTENSIONS VIEWER. FULL VERSIONIf by chance wglGetProcAddress() couldn't find the extension function, it would've initialized the pointer with NULL.Free Download OpenGL Extension Viewer 6 full version standalone offline installer for Windows, it is used to analyze your PC to get complete details about your system. GlDeleteFramebuffersEXT = (PFNGLDELETEFRAMEBUFFERSEXTPROC) wglGetProcAddress("glDeleteFramebuffersEXT") ĭon't forget to check the function pointers for NULL. GlCheckFramebufferStatusEXT = (PFNGLCHECKFRAMEBUFFERSTATUSEXTPROC) wglGetProcAddress("glCheckFramebufferStatusEXT") ![]() GlFramebufferTexture2DEXT = (PFNGLFRAMEBUFFERTEXTURE2DEXTPROC) wglGetProcAddress("glFramebufferTexture2DEXT") GlBindFramebufferEXT = (PFNGLBINDFRAMEBUFFEREXTPROC) wglGetProcAddress("glBindFramebufferEXT") We need to use wglGetProcAddress() function to do this.Įxample: glGenFramebuffersEXT = (PFNGLGENFRAMEBUFFERSEXTPROC) wglGetProcAddress("glGenFramebuffersEXT") These functions are exposed by the library or driver. Initialize these function pointers with their rightful functions. Though it looks ugly, all we're doing is to declare function pointers of the type corresponding to the extension API. PFNGLDELETEFRAMEBUFFERSEXTPROC glDeleteFramebuffersEXT PFNGLCHECKFRAMEBUFFERSTATUSEXTPROC glCheckFramebufferStatusEXT ![]() PFNGLFRAMEBUFFERTEXTURE2DEXTPROC glFramebufferTexture2DEXT PFNGLBINDFRAMEBUFFEREXTPROC glBindFramebufferEXT The other is a sane looking function declaration.įor each extension API you wish to use, add in your code declarations of the function name as a type of the ugly-looking string.Įxample: PFNGLGENFRAMEBUFFERSEXTPROC glGenFramebuffersEXT One is a wgl-like ugly function pointer declaration. Open glext.h, find the API you wish to use and grab its corresponding ugly-looking declaration.Įxample: I search for the above framebuffer APIs and find their corresponding ugly-looking declarations: typedef void (APIENTRYP PFNGLGENFRAMEBUFFERSEXTPROC) (GLsizei n, GLuint *framebuffers) for GLAPI void APIENTRY glGenFramebuffersEXT (GLsizei, GLuint *) Īll this means is that your header file has the API declaration in 2 forms. (Note that not all extensions might be supported.) Either place this header file somewhere your compiler can pick it up or include its directory in your compiler's include directories list.Īdd a #include line in your code to include the header file into your code. Your graphic card manufacturer provides a glext.h header file (or a similarly named header file) with all the declarations needed to use the supported OpenGL extensions. OPENGL EXTENSIONS VIEWER. INSTALLI then download the latest NVIDIA OpenGL SDK and install it. So, I visit the NVIDIA OpenGL Extension Specifications webpage and find that the EXT_framebuffer_object extension is supported. OPENGL EXTENSIONS VIEWER. DRIVERSIf it does, then your work is almost done! Download and install the latest drivers and SDKs for your graphics card.Įxample: The graphics card in my PC is a NVIDIA 6600 GT. The APIs I wish to use from this extension are: glGenFramebuffersEXT()Ĭheck if your graphic card supports the extension you wish to use. OpenGL extensions are listed in the OpenGL Extension Registry.Įxample: I wish to use the capabilities of the EXT_framebuffer_object extension. Identify the OpenGL extension and the extension APIs you wish to use. OPENGL EXTENSIONS VIEWER. HOW TOIf you have a really strong reason not to use GLEW, here's how to achieve the same without it: ![]()
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