glGetQueryObject, glIsQuery
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glGetQueryIndexed: man4/glGetQueryIndexed.xml
glGetQueryIndexediv returns in params a selected parameter of the indexed query object target specified by target and index. index specifies the index of the query object target and must be between zero and a target-specific maxiumum. pname names a specific query object target parameter. When pname is GL_CURRENT_QUERY, the name of the currently active query for the specified index of target, or zero if no query is active, will be placed in params. If pname is GL_QUERY_COUNTER_BITS, the implementation-dependent number of bits used to hold the result of queries for target is returned in params.
The target GL_ANY_SAMPLES_PASSED_CONSERVATIVE is available only if the GL version is 4.3 or greater. If an error is generated, no change is made to the contents of params. Calling glGetQueryiv is equivalent to calling glGetQueryIndexediv with index set to zero.