On Nov 3, 2005, at 7:35 AM, MythTV wrote:
This commit is doing something wrong. Before this commit, I set the depth to 24 which gave X a pixel format of 32 bit ARGB and the chromakey osd worked like a charm. after this commit I get the following error:#539: XVMC Chromakey OSD Crash------------------------------ +---------------------------------------------Reporter: [EMAIL PROTECTED] | Owner: danielk Type: defect | Status: closed Priority: minor | Milestone: 0.20 Component: mythtv | Version: head Severity: medium | Resolution: fixed------------------------------ +---------------------------------------------Changes (by danielk): * resolution: => fixed * status: reopened => closed Comment: (In [7682]) Fixes #539. gkruse, this is probably not what you want to hear, but the ChromaKey OSD only supports 32 bit ARGB visuals.. and you are using a 16 bit RGB visual. This commit adds a check that the visual is a 32 bits visual, if it is not ChromaKey OSD is not enabled. ChromaKey OSD could be extended to support other visuals, but it would involve creating new OSD blend functions.
VideoOutputXv: Number of bits per pixel is 24, but we only support ARGB 32 bbp for ChromaKeyOSD.But really, we have a depth of 24 with an additional 8 bits for the alpha channel for a total of 32 bit ARGB. In fact, I don't even think it is possible to set a depth of 32 for Nvidia cards so this is clearly checking the wrong thing. Reverting back to the previous code allows Chromakey osd to function again.
Geoff
One could also make Qt pick a 32 bit ARGB visual if one is available, but a google search reveals that this requires subclassing QFrame to use a better visual, and ALWAYS using the subclass to create windows. This is because Qt stores the visual information in global variables, so that all Qt windows in an application must use the same visual.. (Ugh!) That kind of change doesn't make sense before the new MythUI stuff is in place. Until then you can probably configure X11 to pick a 32 bit ARGB visual by default for the root window. QFrame uses the root window's visual for the windows it creates, so this should make ChromaKey OSD work for you. -- Ticket URL: <http://cvs.mythtv.org/trac/ticket/539> MythTV <http://www.mythtv.org/> MythTV
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