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.\"     Title: glGetProgramResourceName
.\"    Author: [FIXME: author] [see http://docbook.sf.net/el/author]
.\" Generator: DocBook XSL Stylesheets v1.79.1 <http://docbook.sf.net/>
.\"      Date: 01/03/2018
.\"    Manual: [FIXME: manual]
.\"    Source: [FIXME: source]
.\"  Language: English
.\"
.TH "GLGETPROGRAMRESOURCE" "3G" "01/03/2018" "[FIXME: source]" "[FIXME: manual]"
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.\" * MAIN CONTENT STARTS HERE *
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.SH "NAME"
glGetProgramResourceName \- query the name of an indexed resource within a program
.SH "C SPECIFICATION"
.HP \w'void\ glGetProgramResourceName('u
.BI "void glGetProgramResourceName(GLuint\ " "program" ", GLenum\ " "programInterface" ", GLuint\ " "index" ", GLsizei\ " "bufSize" ", GLsizei\ *\ " "length" ", char\ *\ " "name" ");"
.SH "PARAMETERS"
.PP
\fIprogram\fR
.RS 4
The name of a program object whose resources to query\&.
.RE
.PP
\fIprogramInterface\fR
.RS 4
A token identifying the interface within
\fIprogram\fR
containing the indexed resource\&.
.RE
.PP
\fIindex\fR
.RS 4
The index of the resource within
\fIprogramInterface\fR
of
\fIprogram\fR\&.
.RE
.PP
\fIbufSize\fR
.RS 4
The size of the character array whose address is given by
\fIname\fR\&.
.RE
.PP
\fIlength\fR
.RS 4
The address of a variable which will receive the length of the resource name\&.
.RE
.PP
\fIname\fR
.RS 4
The address of a character array into which will be written the name of the resource\&.
.RE
.SH "DESCRIPTION"
.PP
\fBglGetProgramResourceName\fR
retrieves the name string assigned to the single active resource with an index of
\fIindex\fR
in the interface
\fIprogramInterface\fR
of program object
\fIprogram\fR\&.
\fIindex\fR
must be less than the number of entries in the active resource list for
\fIprogramInterface\fR\&.
.PP
\fIprogram\fR
must be the name of an existing program object\&.
\fIprogramInterface\fR
is the name of the interface within
\fIprogram\fR
which contains the resource and must be one of the following values:
.PP
\fBGL_UNIFORM\fR
.RS 4
The query is targeted at the set of active uniforms within
\fIprogram\fR\&.
.RE
.PP
\fBGL_UNIFORM_BLOCK\fR
.RS 4
The query is targeted at the set of active uniform blocks within
\fIprogram\fR\&.
.RE
.PP
\fBGL_PROGRAM_INPUT\fR
.RS 4
The query is targeted at the set of active input variables used by the first shader stage of
\fIprogram\fR\&. If
\fIprogram\fR
contains multiple shader stages then input variables from any stage other than the first will not be enumerated\&.
.RE
.PP
\fBGL_PROGRAM_OUTPUT\fR
.RS 4
The query is targeted at the set of active output variables produced by the last shader stage of
\fIprogram\fR\&. If
\fIprogram\fR
contains multiple shader stages then output variables from any stage other than the last will not be enumerated\&.
.RE
.PP
\fBGL_VERTEX_SUBROUTINE\fR, \fBGL_TESS_CONTROL_SUBROUTINE\fR, \fBGL_TESS_EVALUATION_SUBROUTINE\fR, \fBGL_GEOMETRY_SUBROUTINE\fR, \fBGL_FRAGMENT_SUBROUTINE\fR, \fBGL_COMPUTE_SUBROUTINE\fR
.RS 4
The query is targeted at the set of active subroutines for the vertex, tessellation control, tessellation evaluation, geometry, fragment and compute shader stages of
\fIprogram\fR, respectively\&.
.RE
.PP
\fBGL_VERTEX_SUBROUTINE_UNIFORM\fR, \fBGL_TESS_CONTROL_SUBROUTINE_UNIFORM\fR, \fBGL_TESS_EVALUATION_SUBROUTINE_UNIFORM\fR, \fBGL_GEOMETRY_SUBROUTINE_UNIFORM\fR, \fBGL_FRAGMENT_SUBROUTINE_UNIFORM\fR, \fBGL_COMPUTE_SUBROUTINE_UNIFORM\fR
.RS 4
The query is targeted at the set of active subroutine uniform variables used by the vertex, tessellation control, tessellation evaluation, geometry, fragment and compute shader stages of
\fIprogram\fR, respectively\&.
.RE
.PP
\fBGL_TRANSFORM_FEEDBACK_VARYING\fR
.RS 4
The query is targeted at the set of output variables from the last non\-fragment stage of
\fIprogram\fR
that would be captured if transform feedback were active\&.
.RE
.PP
\fBGL_BUFFER_VARIABLE\fR
.RS 4
The query is targeted at the set of active buffer variables used by
\fIprogram\fR\&.
.RE
.PP
\fBGL_SHADER_STORAGE_BLOCK\fR
.RS 4
The query is targeted at the set of active shader storage blocks used by
\fIprogram\fR\&.
.RE
.PP
The name string assigned to the active resource identified by
\fIindex\fR
is returned as a null\-terminated string in the character array whose address is given in
\fIname\fR\&. The actual number of characters written into
\fIname\fR, excluding the null terminator, is returned in
\fIlength\fR\&. If
\fIlength\fR
is NULL, no length is returned\&. The maximum number of characters that may be written into
\fIname\fR, including the null terminator, is specified by
\fIbufSize\fR\&. If the length of the name string
\fIincluding the null terminator\fR
is greater than
\fIbufSize\fR, the first
\fIbufSize\fR\-1 characters of the name string will be written to
\fIname\fR, followed by a null terminator\&. If
\fIbufSize\fR
is zero, no error will be generated but no characters will be written to
\fIname\fR\&. The length of the longest name string for
\fIprogramInterface\fR>, including a null terminator, can be queried by calling
\fBglGetProgramInterface\fR()
with a
\fIpname\fR
of
\fBGL_MAX_NAME_LENGTH\fR\&.
.SH "ERRORS"
.PP
\fBGL_INVALID_ENUM\fR
is generated if
\fIprogramInterface\fR
is not one of the accepted interface types\&.
.PP
\fBGL_INVALID_VALUE\fR
is generated if
\fIprogam\fR
is not the name of an existing program\&.
.PP
\fBGL_INVALID_VALUE\fR
is generated if
\fIindex\fR
is greater than or equal to the number of entries in the active resource list for
\fIprogramInterface\fR\&.
.PP
\fBGL_INVALID_ENUM\fR
is generated if
\fIprogramInterface\fR
is
\fBGL_ATOMIC_COUNTER_BUFFER\fR
or
\fBGL_TRANSFORM_FEEDBACK_BUFFER\fR, since active atomic counter and transform feedback buffer resources are not assigned name strings\&.
.SH "VERSION SUPPORT"
.TS
allbox tab(:);
lB cB s s s s s s s s s s s
lB cB cB cB cB cB cB cB cB cB cB cB cB.
T{

T}:T{
\fBOpenGL Version\fR
T}
T{
\fBFunction / Feature Name\fR
T}:T{
\fB2\&.0\fR
T}:T{
\fB2\&.1\fR
T}:T{
\fB3\&.0\fR
T}:T{
\fB3\&.1\fR
T}:T{
\fB3\&.2\fR
T}:T{
\fB3\&.3\fR
T}:T{
\fB4\&.0\fR
T}:T{
\fB4\&.1\fR
T}:T{
\fB4\&.2\fR
T}:T{
\fB4\&.3\fR
T}:T{
\fB4\&.4\fR
T}:T{
\fB4\&.5\fR
T}
.T&
l c c c c c c c c c c c c.
T{
\fBglGetProgramResourceName\fR
T}:T{
\-
T}:T{
\-
T}:T{
\-
T}:T{
\-
T}:T{
\-
T}:T{
\-
T}:T{
\-
T}:T{
\-
T}:T{
\-
T}:T{
✔
T}:T{
✔
T}:T{
✔
T}
.TE
.sp 1
.SH "SEE ALSO"
.PP
\fBglGetProgramResourceIndex\fR(),
\fBglGetProgramResource\fR(),
\fBglGetProgramResourceLocation\fR(),
\fBglGetProgramResourceLocationIndex\fR()\&.
.SH "COPYRIGHT"
.PP
Copyright
\(co
2013\-2014 Khronos Group\&. This material may be distributed subject to the terms and conditions set forth in the Open Publication License, v 1\&.0, 8 June 1999\&.
\m[blue]\fBhttp://opencontent\&.org/openpub/\fR\m[]\&.
.SH "COPYRIGHT"
.br
Copyright \(co 2013-2014 Khronos Group
.br