glGetProgramiv Returns a parameter from a program object
void glGetProgramiv(GLuint program,
Specifies the program object to be queried.
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_MAX_LENGTH.
Returns the requested object parameter.
glGetProgram returns in params the value of a parameter for a specific program object. The following parameters are defined:
params returns GL_TRUE if program is currently flagged for deletion, and GL_FALSE otherwise.
params returns GL_TRUE if the last link operation on program was successful, and GL_FALSE otherwise.
params returns GL_TRUE or if the last validation operation on program was successful, and GL_FALSE otherwise.
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.
params returns the number of shader objects attached to program.
params returns the number of active attribute variables for program.
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.
params returns the number of active uniform variables for program.
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.
glGetProgram is available only if the GL version is 2.0 or greater.
If an error is generated, no change is made to the contents of params.
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_ENUM is generated if pname is not an accepted value.
GL_INVALID_OPERATION is generated if glGetProgram is executed between the execution of glBegin and the corresponding execution of glEnd.
glGetActiveAttrib with argument program
glGetActiveUniform with argument program
glGetAttachedShaders with argument program
glGetProgramInfoLog with argument program
glAttachShader, glCreateProgram, glDeleteProgram, glGetShader, glLinkProgram, glValidateProgram