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gldebugmessagecallback(3g) [centos man page]

GLDEBUGMESSAGECALLBA(3G)					   OpenGL Manual					  GLDEBUGMESSAGECALLBA(3G)

NAME
glDebugMessageCallback - specify a callback to receive debugging messages from the GL C SPECIFICATION
void glDebugMessageCallback(DEBUGPROC callback, void * userParam); PARAMETERS
callback The address of a callback function that will be called when a debug message is generated. userParam A user supplied pointer that will be passed on each invocation of callback. DESCRIPTION
glDebugMessageInsert sets the current debug output callback function to the function whose address is given in callback. The callback function should have the following prototype (in C), or be otherwise compatible with such a prototype: typedef void (APIENTRY *DEBUGPROC)(GLenum source, GLenum type, GLuint id, GLenum severity, GLsizei length, const GLchar* message, void* userParam); This function is defined to have the same calling convention as the GL API functions. In most cases this is defined as APIENTRY, although it will vary depending on platform, language and compiler. Each time a debug message is generated the debug callback function will be invoked with source, type, id, and severity associated with the message, and length set to the length of debug message whose character string is in the array pointed to by messageuserParam will be set to the value passed in the userParam parameter to the most recent call to glDebugMessageInsert. NOTES
When the GL is in use remotely, the server may not be able to call functions in the client's address space. In such cases, the callback function may not be invoked and the user should retrieve debug messages from the context's debug message log by calling glGetDebugMessageLog(). SEE ALSO
glDebugMessageControl(), glDebugMessageInsert(), glGetDebugMessageLog(). COPYRIGHT
Copyright (C) 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 06/10/2014 GLDEBUGMESSAGECALLBA(3G)

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GLDEBUGMESSAGEINSERT(3G)					   OpenGL Manual					  GLDEBUGMESSAGEINSERT(3G)

NAME
glDebugMessageInsert - inject an application-supplied message into the debug message queue C SPECIFICATION
void glDebugMessageInsert(GLenum source, GLenum type, GLuint id, GLenum severity, GLsizei length, const char *message); PARAMETERS
source The source of the debug message to insert. type The type of the debug message insert. id The user-supplied identifier of the message to insert. severity The severity of the debug messages to insert. length The length string contained in the character array whose address is given by message. message The address of a character array containing the message to insert. DESCRIPTION
glDebugMessageInsert inserts a user-supplied message into the debug output queue. source specifies the source that will be used to classify the message and must be GL_DEBUG_SOURCE_APPLICATION or GL_DEBUG_SOURCE_THIRD_PARTY. All other sources are reserved for use by the GL implementation. type indicates the type of the message to be inserted and may be one of GL_DEBUG_TYPE_ERROR, GL_DEBUG_TYPE_DEPRECATED_BEHAVIOR, GL_DEBUG_TYPE_UNDEFINED_BEHAVIOR, GL_DEBUG_TYPE_PORTABILITY, GL_DEBUG_TYPE_PERFORMANCE, or GL_DEBUG_TYPE_OTHER. severity indicates the severity of the message and may be GL_DEBUG_SEVERITY_LOW, GL_DEBUG_SEVERITY_MEDIUM, or GL_DEBUG_SEVERITY_HIGH. id is available for application defined use and may be any value. This value will be recorded and used to identify the message. length contains a count of the characters in the character array whose address is given in message. If length is negative then message is treated as a null-terminated string. The length of the message, whether specified explicitly or implicitly, must be less than or equal to the implementation defined constant GL_MAX_DEBUG_MESSAGE_LENGTH. ERRORS
GL_INVALID_ENUM is generated if any of source, type or severity is not one of the accepted interface types. GL_INVALID_VALUE is generated if the length of the message is greater than the value of GL_MAX_DEBUG_MESSAGE_LENGTH. SEE ALSO
glDebugMessageControl(), glDebugMessageCallback(), glGetDebugMessageLog(). COPYRIGHT
Copyright (C) 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 06/10/2014 GLDEBUGMESSAGEINSERT(3G)
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