glQueryCounter - record the GL time into a query object after all previous
commands have reached the GL server but have not yet necessarily executed.
void glQueryCounter(GLuint id,
Specify the name of a query object into which to record
the GL time.
Specify the counter to query. target must be
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.
glQueryCounter is available only if the GL version is 3.3 or higher.
GL_INVALID_OPERATION is generated if id is the name of a query
object that is already in use within a glBeginQuery() /
GL_INVALID_VALUE is generated if id is not the name
of a query object returned from a previous call to
GL_INVALID_ENUM is generated if target is not
|Function / Feature Name
glGetQueryObject(), glGetQueryiv(), glGet()
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/.
Copyright © 2010-2014 Khronos Group