EXT_disjoint_timer_query.getQueryObjectEXT()

The EXT_disjoint_timer_query.getQueryObjectEXT() method of the WebGL API returns the state of a query object.

Syntax

any ext.getQueryObjectEXT(query, pname);

Parameters

query
A WebGLQuery object from which to return information.
pname
A GLenum specifying which information to return. Must be ext.QUERY_RESULT_EXT or ext.QUERY_RESULT_AVAILABLE_EXT.

Return value

Depends on pname:

  • If pname is ext.QUERY_RESULT_EXT: A GLuint64EXT containing the query result.
  • If pname is ext.QUERY_RESULT_AVAILABLE_EXT: A GLboolean indicating whether or not a query result is available.

Examples

var ext = gl.getExtension('EXT_disjoint_timer_query');
var query = ext.createQueryEXT();
ext.beginQueryEXT(ext.TIME_ELAPSED_EXT, query);

// ... drawing ...

ext.endQueryEXT(ext.TIME_ELAPSED_EXT);



// At some point in the future, after returning control to the browser
var available = ext.getQueryObjectEXT(query, ext.QUERY_RESULT_AVAILABLE_EXT);
var disjoint = gl.getParamater(ext.GPU_DISJOINT_EXT);

if (available && !disjoint) {
  // See how much time the rendering of the object took in nanoseconds.
  var timeElapsed = ext.getQueryObjectEXT(query, ext.QUERY_RESULT_EXT);
}

Specifications

Specification Status Comment
EXT_disjoint_timer_query
The definition of 'EXT_disjoint_timer_query' in that specification.
Working Draft Initial definition.

Browser compatibility

Update compatibility data on GitHub
DesktopMobile
ChromeEdgeFirefoxInternet ExplorerOperaSafariAndroid webviewChrome for AndroidEdge MobileFirefox for AndroidOpera for AndroidiOS SafariSamsung Internet
Basic supportChrome No support 47 — 65
Notes
No support 47 — 65
Notes
Notes Removed due to the GLitch exploit.
Edge No support NoFirefox No support 51 — 63
Notes
No support 51 — 63
Notes
Notes Removed due to the GLitch exploit.
IE ? Opera ? Safari ? WebView Android ? Chrome Android No support 47 — 65
Notes
No support 47 — 65
Notes
Notes Removed due to the GLitch exploit.
Edge Mobile No support NoFirefox Android No support NoOpera Android ? Safari iOS ? Samsung Internet Android Full support 5.0

Legend

Full support  
Full support
No support  
No support
Compatibility unknown  
Compatibility unknown
See implementation notes.
See implementation notes.

See also

Document Tags and Contributors

Contributors to this page: fscholz, nmve, teoli
Last updated by: fscholz,