The EXT_disjoint_timer_query.getQueryObjectEXT()
method of the WebGL API returns the state of a query object.
any ext.getQueryObjectEXT(query, pname);
query
WebGLQuery
object from which to return information.pname
GLenum
specifying which information to return. Must be ext.QUERY_RESULT_EXT
or ext.QUERY_RESULT_AVAILABLE_EXT
.Depends on pname
:
pname
is ext.QUERY_RESULT_EXT
: A GLuint64EXT
containing the query result.pname
is ext.QUERY_RESULT_AVAILABLE_EXT
: A GLboolean
indicating whether or not a query result is available.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); }
Specification | Status | Comment |
---|---|---|
EXT_disjoint_timer_query The definition of 'EXT_disjoint_timer_query' in that specification. | Working Draft | Initial definition. |
Feature | Chrome | Edge | Firefox | Internet Explorer | Opera | Safari |
---|---|---|---|---|---|---|
Basic support | 47 | No | 51 | ? | ? | ? |
Feature | Android webview | Chrome for Android | Edge mobile | Firefox for Android | IE mobile | Opera Android | iOS Safari |
---|---|---|---|---|---|---|---|
Basic support | ? | 47 | No | No | ? | ? | ? |
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https://developer.mozilla.org/en-US/docs/Web/API/EXT_disjoint_timer_query/getQueryObjectEXT