neugierig.org: Chromium Notes

By the way, I was incorrect in at least one way in my recent post about plugins: Flash actually has three modes, as a perfunctory search would reveal. They are windowed (as described before), and then two forms of windowless: one that is opaque over the content behind it, and one that is transparent.

I don't believe Chrome makes a distinction (or even has access to information that would allow it to make a distinction, though I haven't examined the windowless code thoroughly yet) in that case. If we did, we could cut out some copying of buffers around in the opaque case (as described in the earlier post in the section discussing RGBA).