On Tue, 04 Feb 2014 18:21:14 +0000 Mark Morgan Lloyd <[email protected]> wrote:
> With the major caveat that the interfaces used for playing video and for > program-generated graphics are distinct (hardware MPEG decompression in > one case, OpenGL in the other) and having one work implies nothing about > the other. "Implies nothing" is a little too strong for my liking. I give you that this is no proof of OpenGL and hardware video decompression using the same mechanics of bypassing X. I don't know much about older implementations of hardware video decompression (my impressions at the time was that they were Windows only) but VDPAU is immplemented in the device driver, so I have a hard time believing that they do not transfer data the same way as they do for OpenGL. I know that at least for some codecs (and vendors) the decompression is done in the shader processors and I see no reason to use a radically different system to transfer video streams to these processors than they use to transfer OpenGL data. IMHO being implemented in the same driver is a hint that they use similar mechanics. R. -- _______________________________________________ Lazarus mailing list [email protected] http://lists.lazarus.freepascal.org/mailman/listinfo/lazarus
