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doc/gl-docs/GLU/getstring.3gl

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+'\" e
+'\"! eqn | mmdoc
+'\"macro stdmacro
+.ds Vn Version 1.2
+.ds Dt 6 March 1997
+.ds Re Release 1.2.0
+.ds Dp May 02 11:53
+.ds Dm 37 getstring
+.ds Xs 20129 4 getstring.gl
+.TH GLUGETSTRING 3G
+.SH NAME
+.B "gluGetString
+\- return a string describing the GLU version or GLU extensions 
+
+.SH C SPECIFICATION
+const GLubyte * \f3gluGetString\fP(
+GLenum \fIname\fP )
+.nf
+.fi
+
+.SH PARAMETERS
+.TP \w'\f2name\fP\ \ 'u 
+\f2name\fP
+Specifies a symbolic constant, one of 
+\%\f3GLU_VERSION\fP, or \%\f3GLU_EXTENSIONS\fP.
+.SH DESCRIPTION
+\%\f3gluGetString\fP returns a pointer to a static string describing the 
+GLU version or the GLU extensions that are supported.
+.P
+The version number is one of the following
+forms: 
+.P
+\f2major_number.minor_number\fP  
+.br
+\f2major_number.minor_number.release_number\fP. 
+.P
+The version string is of the following form: 
+.P
+\f2version number<space>vendor-specific information\fP
+.P
+Vendor-specific information is optional.
+Its  and contents depend on the implementation.
+.P
+The standard GLU contains a basic set of features and capabilities.
+If a company or group of companies wish to support other features,
+these may be included as extensions to the GLU.  
+If \f2name\fP is 
+\%\f3GLU_EXTENSIONS\fP, then \%\f3gluGetString\fP
+returns a space-separated list of names of supported GLU extensions.
+(Extension names never contain spaces.)
+.P
+All strings are null-terminated.
+.SH NOTES
+\%\f3gluGetString\fP only returns information about GLU extensions. Call
+\f3glGetString\fP to get a list of GL extensions.
+.P
+\%\f3gluGetString\fP is an initialization routine. Calling it after
+a \f3glNewList\fP results in undefined behavior.
+.SH ERRORS
+NULL is returned if \f2name\fP is not
+\%\f3GLU_VERSION\fP or \%\f3GLU_EXTENSIONS\fP.
+.P
+.SH SEE ALSO
+\f3glGetString(3G)\fP
+