%mathent; ]> 2003-2005 3Dlabs Inc. Ltd. 2010-2014 Khronos Group glGetProgramiv 3G glGetProgramiv Returns a parameter from a program object void glGetProgramiv GLuint program GLenum pname GLint *params program Specifies the program object to be queried. pname 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. params Returns the requested object parameter. glGetProgramiv returns in params the value of a parameter for a specific program object. The following parameters are defined: 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_UNIFORM_BLOCKS params returns the number of uniform blocks for program containing active uniforms. GL_ACTIVE_UNIFORM_BLOCK_MAX_NAME_LENGTH 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. 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_ATTACHED_SHADERS params returns the number of shader objects attached to program. GL_DELETE_STATUS params returns GL_TRUE if program is currently flagged for deletion, 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_LINK_STATUS params returns GL_TRUE if the last link operation on program was successful, and GL_FALSE otherwise. GL_PROGRAM_BINARY_RETRIEVABLE_HINT params returns the current value of whether the binary retrieval hint is enabled for program. 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_VALIDATE_STATUS params returns GL_TRUE or if the last validation operation on program was successful, and GL_FALSE otherwise. 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. glGetActiveAttrib with argument program glGetActiveUniform with argument program glGetAttachedShaders with argument program glGetProgramInfoLog with argument program glIsProgram glGetProgramiv glAttachShader, glCreateProgram, glDeleteProgram, glGetShaderiv, glLinkProgram, glValidateProgram Copyright 2003-2005 3Dlabs Inc. Ltd. Copyright 2010-2014 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. http://opencontent.org/openpub/.