glgenqueries(3g) [centos man page]

GLGENQUERIES(3G)						   OpenGL Manual						  GLGENQUERIES(3G)

NAME

       glGenQueries - generate query object names

C SPECIFICATION

       void glGenQueries(GLsizei n, GLuint * ids);

PARAMETERS

       n
	   Specifies the number of query object names to be generated.

       ids
	   Specifies an array in which the generated query object names are stored.

DESCRIPTION

       glGenQueries returns n query object names in ids. There is no guarantee that the names form a contiguous set of integers; however, it is
       guaranteed that none of the returned names was in use immediately before the call to glGenQueries.

       Query object names returned by a call to glGenQueries are not returned by subsequent calls, unless they are first deleted with
       glDeleteQueries().

       No query objects are associated with the returned query object names until they are first used by calling glBeginQuery().

ERRORS

       GL_INVALID_VALUE is generated if n is negative.

ASSOCIATED GETS

       glIsQuery()

SEE ALSO

       glBeginQuery(), glDeleteQueries(), glEndQuery()

COPYRIGHT

       Copyright (C) 2005 Addison-Wesley. 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							  GLGENQUERIES(3G)

GLQUERYCOUNTER(3G)						   OpenGL Manual						GLQUERYCOUNTER(3G)

NAME

       glQueryCounter - record the GL time into a query object after all previous commands have reached the GL server but have not yet necessarily
       executed.

C SPECIFICATION

       void glQueryCounter(GLuint id, GLenum target);

PARAMETERS

       id
	   Specify the name of a query object into which to record the GL time.

       target
	   Specify the counter to query.  target must be GL_TIMESTAMP.

DESCRIPTION

       glQueryCounter causes the GL to record the current time into the query object named id.	target must be GL_TIMESTAMP. The time is recorded
       after all previous commands on the GL client and server state and the framebuffer have been fully realized. When the time is recorded, the
       query result for that object is marked available.  glQueryCounter timer queries can be used within a glBeginQuery() / glEndQuery() block
       where the target is GL_TIME_ELAPSED and it does not affect the result of that query object.

NOTES

       glQueryCounter is available only if the GL version is 3.3 or higher.

ERRORS

       GL_INVALID_OPERATION is generated if id is the name of a query object that is already in use within a glBeginQuery() / glEndQuery() block.

       GL_INVALID_VALUE is generated if id is not the name of a query object returned from a previous call to glGenQueries().

       GL_INVALID_ENUM is generated if target is not GL_TIMESTAMP.

SEE ALSO

       glGenQueries(), glBeginQuery(), glEndQuery(), glDeleteQueries(), glGetQueryObject(), glGetQueryiv(), glGet()

COPYRIGHT

       Copyright (C) 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/.

AUTHORS

       opengl.org

opengl.org							    06/10/2014							GLQUERYCOUNTER(3G)