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, |
GLenum target) ; |
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
.
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.
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
.
glGenQueries, glBeginQuery, glEndQuery, glDeleteQueries, glGetQueryObject, glGetQueryiv, glGet
Copyright © 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/.