Difference between revisions of "GLAPI/glIsQuery"

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(4.0 API.)
 
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== Function Definition ==
 
== Function Definition ==
  
   GLboolean '''glIsQuery'''(GLuint ''id'');
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   GLboolean '''glIsQuery'''(GLuint {{param|id}});
  
 
; id
 
; id
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== Description ==
 
== Description ==
  
'''glIsQuery''' returns {{code|GL_TRUE}} if ''id'' is currently the name of a query object. If ''id'' is zero, or is a non-zero value that is not currently the name of a query object, or if an error occurs, '''glIsQuery''' returns {{code|GL_FALSE}}.
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'''glIsQuery''' returns {{enum|GL_TRUE}} if {{param|id}} is currently the name of a query object. If {{param|id}} is zero, or is a non-zero value that is not currently the name of a query object, or if an error occurs, '''glIsQuery''' returns {{enum|GL_FALSE}}.
  
A name returned by [[GLAPI/glGenQueries|glGenQueries]], but not yet associated with a query object by calling [[GLAPI/glBeginQuery|glBeginQuery]], is not the name of a query object.
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A name returned by {{apifunc|glGenQueries}}, but not yet associated with a query object by calling {{apifunc|glBeginQuery}}, is not the name of a query object.
  
 
== See Also ==
 
== See Also ==
  
[[GLAPI/glBeginQuery|glBeginQuery]], [[GLAPI/glDeleteQueries|glDeleteQueries]], [[GLAPI/glEndQuery|glEndQuery]], [[GLAPI/glGenQueries|glGenQueries]]
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{{apifunc|glGenQueries}}, {{apifunc|glBeginQuery}}, {{apifunc|glEndQuery}}, {{apifunc|glDeleteQueries}}
  
 
== Copyright ==
 
== Copyright ==
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Copyright © 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/ http://opencontent.org/openpub/].
 
Copyright © 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/ http://opencontent.org/openpub/].
  
[[Category:API Reference 4|IsQuery]]
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[[Category:Core API Ref Queries and Timers|IsQuery]]
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[[Category:Core API Reference|IsQuery]]

Latest revision as of 01:51, 27 September 2012

glIsQuery
Core in version 4.6
Core since version 1.5

glIsQuery: determine if a name corresponds to a query object

Function Definition

 GLboolean glIsQuery(GLuint id​);
id
Specifies a value that may be the name of a query object.

Description

glIsQuery returns GL_TRUE if id​ is currently the name of a query object. If id​ is zero, or is a non-zero value that is not currently the name of a query object, or if an error occurs, glIsQuery returns GL_FALSE.

A name returned by glGenQueries, but not yet associated with a query object by calling glBeginQuery, is not the name of a query object.

See Also

glGenQueries, glBeginQuery, glEndQuery, glDeleteQueries

Copyright

Copyright © 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/.