glGetProgramiv man page on MacOSX
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GLGETPROGRAM(3G) OpenGL 3.3 GLGETPROGRAM(3G)
NAME
glGetProgramiv - Returns a parameter from a program object
C SPECIFICATION
void glGetProgramiv(GLuint program, GLenum pname, GLint *params);
PARAMETERS
program
Specifies the program object to be queried.
pname
Specifies the object parameter. Accepted symbolic names are
GL_DELETE_STATUS, GL_LINK_STATUS, GL_VALIDATE_STATUS,
GL_INFO_LOG_LENGTH, GL_ATTACHED_SHADERS, GL_ACTIVE_ATTRIBUTES,
GL_ACTIVE_ATTRIBUTE_MAX_LENGTH, GL_ACTIVE_UNIFORMS,
GL_ACTIVE_UNIFORM_BLOCKS, GL_ACTIVE_UNIFORM_BLOCK_MAX_NAME_LENGTH,
GL_ACTIVE_UNIFORM_MAX_LENGTH, GL_TRANSFORM_FEEDBACK_BUFFER_MODE,
GL_TRANSFORM_FEEDBACK_VARYINGS,
GL_TRANSFORM_FEEDBACK_VARYING_MAX_LENGTH, GL_GEOMETRY_VERTICES_OUT,
GL_GEOMETRY_INPUT_TYPE, and GL_GEOMETRY_OUTPUT_TYPE.
params
Returns the requested object parameter.
DESCRIPTION
glGetProgram returns in params the value of a parameter for a specific
program object. The following parameters are defined:
GL_DELETE_STATUS
params returns GL_TRUE if program is currently flagged for
deletion, and GL_FALSE otherwise.
GL_LINK_STATUS
params returns GL_TRUE if the last link operation on program was
successful, and GL_FALSE otherwise.
GL_VALIDATE_STATUS
params returns GL_TRUE or if the last validation operation on
program was successful, and GL_FALSE otherwise.
GL_INFO_LOG_LENGTH
params returns the number of characters in the information log for
program including the null termination character (i.e., the size of
the character buffer required to store the information log). If
program has no information log, a value of 0 is returned.
GL_ATTACHED_SHADERS
params returns the number of shader objects attached to program.
GL_ACTIVE_ATTRIBUTES
params returns the number of active attribute variables for
program.
GL_ACTIVE_ATTRIBUTE_MAX_LENGTH
params returns the length of the longest active attribute name for
program, including the null termination character (i.e., the size
of the character buffer required to store the longest attribute
name). If no active attributes exist, 0 is returned.
GL_ACTIVE_UNIFORMS
params returns the number of active uniform variables for program.
GL_ACTIVE_UNIFORM_MAX_LENGTH
params returns the length of the longest active uniform variable
name for program, including the null termination character (i.e.,
the size of the character buffer required to store the longest
uniform variable name). If no active uniform variables exist, 0 is
returned.
GL_TRANSFORM_FEEDBACK_BUFFER_MODE
params returns a symbolic constant indicating the buffer mode used
when transform feedback is active. This may be GL_SEPARATE_ATTRIBS
or GL_INTERLEAVED_ATTRIBS.
GL_TRANSFORM_FEEDBACK_VARYINGS
params returns the number of varying variables to capture in
transform feedback mode for the program.
GL_TRANSFORM_FEEDBACK_VARYING_MAX_LENGTH
params returns the length of the longest variable name to be used
for transform feedback, including the null-terminator.
GL_GEOMETRY_VERTICES_OUT
params returns the maximum number of vertices that the geometry
shader in program will output.
GL_GEOMETRY_INPUT_TYPE
params returns a symbolic constant indicating the primitive type
accepted as input to the geometry shader contained in program.
GL_GEOMETRY_OUTPUT_TYPE
params returns a symbolic constant indicating the primitive type
that will be output by the geometry shader contained in program.
NOTES
GL_ACTIVE_UNIFORM_BLOCKS and GL_ACTIVE_UNIFORM_BLOCK_MAX_NAME_LENGTH
are available only if the GL version 3.1 or greater.
GL_GEOMETRY_VERTICES_OUT, GL_GEOMETRY_INPUT_TYPE and
GL_GEOMETRY_OUTPUT_TYPE are accepted only if the GL version is 3.2 or
greater.
If an error is generated, no change is made to the contents of params.
ERRORS
GL_INVALID_VALUE is generated if program is not a value generated by
OpenGL.
GL_INVALID_OPERATION is generated if program does not refer to a
program object.
GL_INVALID_OPERATION is generated if pname is GL_GEOMETRY_VERTICES_OUT,
GL_GEOMETRY_INPUT_TYPE, or GL_GEOMETRY_OUTPUT_TYPE, and program does
not contain a geometry shader.
GL_INVALID_ENUM is generated if pname is not an accepted value.
ASSOCIATED GETS
glGetActiveAttrib() with argument program
glGetActiveUniform() with argument program
glGetAttachedShaders() with argument program
glGetProgramInfoLog() with argument program
glIsProgram()
SEE ALSO
glAttachShader(), glCreateProgram(), glDeleteProgram(), glGetShader(),
glLinkProgram(), glValidateProgram()
COPYRIGHT
Copyright © 2003-2005 3Dlabs Inc. Ltd. Copyright © 2010 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/.
OpenGL 3.3 03/08/2011 GLGETPROGRAM(3G)
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