glutextensionsupported(3) [centos man page]

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NAME

     glutExtensionSupported -- Determine if an OpenGL extension is available.

LIBRARY

     OpenGLUT - opengl

SYNOPSIS

     #include <openglut.h>

     int
     glutExtensionSupported(const char *extension);

PARAMETERS

      extension     A string-name of an extension.

DESCRIPTION

     Returns 0 if OpenGLUT cannot determine that the requested extension is definitely present.  Only checks extensions from glGetString().

TODO

     Wouldn't this be simpler and clearer if we used strtok()?

     Consider an ogWarning() if there is no current rendering context.

     This is an ugly bit of code with 3 return statements, one of which is never reached.

SEE ALSO

     glGetString(3)

								       Epoch

glutExtensionSupported(3GLUT)					       GLUT					     glutExtensionSupported(3GLUT)

NAME

       glutExtensionSupported - helps to easily determine whether a given OpenGL extension is supported.

SYNTAX

       #include <GLUT/glut.h>

       int glutExtensionSupported(char *extension);

ARGUMENTS

       extension Name of OpenGL extension.

DESCRIPTION

       glutExtensionSupported  helps  to  easily determine whether a given OpenGL extension is supported or not. The extension parameter names the
       extension to query. The supported extensions can also be determined with glGetString(GL_EXTENSIONS), but  glutExtensionSupported  does  the
       correct parsing of the returned string.

       glutExtensionSupported returns non-zero if the extension is supported, zero if not supported.

       There must be a valid current window to call glutExtensionSupported.

       glutExtensionSupported  only  returns information about OpenGL extensions only. This means window system dependent extensions (for example,
       GLX extensions) are not reported by glutExtensionSupported.

EXAMPLE

       Here is an example of using glutExtensionSupported:

	 if (!glutExtensionSupported("GL_EXT_texture")) {
	   fprintf(stderr, "Missing the texture extension!
");
	   exit(1);
	 }

       Notice that the name argument includes both the GL prefix and the extension family prefix (EXT).

SEE ALSO

       glutGet, glGetString

AUTHOR

       Mark J. Kilgard (mjk@nvidia.com)

GLUT
									3.7					     glutExtensionSupported(3GLUT)