beginOcclusionQuery method
Starts counting the samples the next draws pass into query
queryIndex of RenderPassDescriptor.occlusionQuerySet —
DeviceFeature.occlusionQuery. One query open at a time.
Implementation
@override
void beginOcclusionQuery(int queryIndex) {
_passOnly('beginOcclusionQuery');
_gated(DeviceFeature.occlusionQuery, 'beginOcclusionQuery', queryIndex);
}