glBeginQuery, glEndQuery, glGetQueryiv, glIsQuery, glQueryCounter
Copyright© 2005 Addison-Wesley. 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/.
Page generated by adrdox
glGetQueryObject: man4/glGetQueryObject.xml
glGetQueryObject returns in params a selected parameter of the query object specified by id. pname names a specific query object parameter. pname can be as follows:
If an error is generated, no change is made to the contents of params. glGetQueryObject implicitly flushes the GL pipeline so that any incomplete rendering delimited by the occlusion query completes in finite time. If multiple queries are issued using the same query object id before calling glGetQueryObject, the results of the most recent query will be returned. In this case, when issuing a new query, the results of the previous query are discarded. glGetQueryObjecti64v and glGetQueryObjectui64v are available only if the GL version is 3.3 or greater. GL_QUERY_RESULT_NO_WAIT is accepted for pname only if the GL version is 4.4 or greater. The GL_QUERY_RESULT_BUFFER target is available only if the GL version is 4.4 or higher. On earlier versions of the GL, params is always an address in client memory.