Specifies the program object to be queried.

Specifies the object parameter. Accepted symbolic names are 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_ATTACHED_SHADERS, GL_DELETE_STATUS, GL_INFO_LOG_LENGTH, GL_LINK_STATUS, GL_PROGRAM_BINARY_RETRIEVABLE_HINT, GL_TRANSFORM_FEEDBACK_BUFFER_MODE, GL_TRANSFORM_FEEDBACK_VARYINGS, GL_TRANSFORM_FEEDBACK_VARYING_MAX_LENGTH and GL_VALIDATE_STATUS.

Returns the requested object parameter.

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 uniform blocks for program containing active uniforms.

params returns the length of the longest active uniform block name for program, including the null termination character (i.e., the size of the character buffer required to store the longest uniform block name). If no active uniform blocks 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.

params returns the number of shader objects attached to program.

params returns GL_TRUE if program is currently flagged for deletion, 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 GL_TRUE if the last link operation on program was successful, and GL_FALSE otherwise.

params returns the current value of whether the binary retrieval hint is enabled for program.

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.

params returns the number of varying variables to capture in transform feedback mode for the program.

params returns the length of the longest variable name to be used for transform feedback, including the null-terminator.

params returns GL_TRUE or if the last validation operation on program was successful, and GL_FALSE otherwise.