glGetProgramResourceName man page on RedHat
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GLGETPROGRAMRESOURCE(3G) OpenGL Manual GLGETPROGRAMRESOURCE(3G)
NAME
glGetProgramResourceName - query the name of an indexed resource within
a program
C SPECIFICATION
void glGetProgramResourceName(GLuint program, GLenum programInterface,
GLuint index, GLsizei bufSize,
GLsizei * length, char * name);
PARAMETERS
program
The name of a program object whose resources to query.
programInterface
A token identifying the interface within program containing the
indexed resource.
index
The index of the resource within programInterface of program.
bufSize
The size of the character array whose address is given by name.
length
The address of a variable which will receive the length of the
resource name.
name
The address of a character array into which will be written the
name of the resource.
DESCRIPTION
glGetProgramResourceName retrieves the name string assigned to the
single active resource with an index of index in the interface
programInterface of program object program. index must be less than
the number of entries in the active resource list for programInterface.
program must be the name of an existing program object.
programInterface is the name of the interface within program which
contains the resource and must be one of the following values:
GL_UNIFORM
The query is targeted at the set of active uniforms within program.
GL_UNIFORM_BLOCK
The query is targeted at the set of active uniform blocks within
program.
GL_PROGRAM_INPUT
The query is targeted at the set of active input variables used by
the first shader stage of program. If program contains multiple
shader stages then input variables from any stage other than the
first will not be enumerated.
GL_PROGRAM_OUTPUT
The query is targeted at the set of active output variables
produced by the last shader stage of program. If program contains
multiple shader stages then output variables from any stage other
than the last will not be enumerated.
GL_VERTEX_SUBROUTINE, GL_TESS_CONTROL_SUBROUTINE,
GL_TESS_EVALUATION_SUBROUTINE, GL_GEOMETRY_SUBROUTINE,
GL_FRAGMENT_SUBROUTINE, GL_COMPUTE_SUBROUTINE
,
,
,
,
,
The query is targeted at the set of active
subroutines for the vertex, tessellation control, tessellation
evaluation, geometry, fragment and compute shader stages of
program, respectively.
GL_VERTEX_SUBROUTINE_UNIFORM, GL_TESS_CONTROL_SUBROUTINE_UNIFORM,
GL_TESS_EVALUATION_SUBROUTINE_UNIFORM, GL_GEOMETRY_SUBROUTINE_UNIFORM,
GL_FRAGMENT_SUBROUTINE_UNIFORM, GL_COMPUTE_SUBROUTINE_UNIFORM
,
,
,
,
,
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 program, respectively.
GL_TRANSFORM_FEEDBACK_VARYING
The query is targeted at the set of output variables from the last
non-fragment stage of program that would be captured if transform
feedback were active.
GL_BUFFER_VARIABLE
The query is targeted at the set of active buffer variables used by
program.
GL_SHADER_STORAGE_BLOCK
The query is targeted at the set of active shader storage blocks
used by program.
The name string assigned to the active resource identified by index is
returned as a null-terminated string in the character array whose
address is given in name. The actual number of characters written into
name, excluding the null terminator, is returned in length. If length
is NULL, no length is returned. The maximum number of characters that
may be written into name, including the null terminator, is specified
by bufSize. If the length of the name string including the null
terminator is greater than bufSize, the first bufSize-1 characters of
the name string will be written to name, followed by a null terminator.
If bufSize is zero, no error will be generated but no characters will
be written to name. The length of the longest name string for
programInterface>, including a null terminator, can be queried by
calling glGetProgramInterface() with a pname of GL_MAX_NAME_LENGTH.
ERRORS
GL_INVALID_ENUM is generated if programInterface is not one of the
accepted interface types.
GL_INVALID_VALUE is generated if progam is not the name of an existing
program.
GL_INVALID_VALUE is generated if index is greater than or equal to the
number of entries in the active resource list for programInterface.
SEE ALSO
glGetProgramResourceIndex(), glGetGetProgramResource(),
glGetProgramResourceLocation(), glGetProgramResourceLocationIndex().
COPYRIGHT
Copyright © 2012 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. http://opencontent.org/openpub/.
AUTHORS
opengl.org
opengl.org 03/16/2013 GLGETPROGRAMRESOURCE(3G)
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