
The presence of this extension indicates to the DRI driver that the loader will call invalidate in the __DRI2_FLUSH extension, whenever the needs to query for new buffers. This means that the DRI driver can drop the polling in glViewport().
The presence of this extension indicates to the DRI driver that the loader will call invalidate in the __DRI2_FLUSH extension, whenever the needs to query for new buffers. This means that the DRI driver can drop the polling in glViewport().