118986 - GFX uses bit-depth of main screen for all windows, even on multi-monitor systems

Status: RESOLVED WONTFIX

(Core Graveyard :: GFX: Mac, defect, P2)

Description

[Mike Pinkerton (not reading bugmail)]

Summary says it all. The reason this is really bad is that it hoses people with
low-end, built-in cards for their main monitors even if they have good video
cards for additional external monitors.

No other mac app has this problem. Perhaps we should be using GetMaxDevice() to
figure out the bit depth we should use for all windows instead of just
defaulting to the main-monitor's GDevice.

Comment 1

[Roland Mainz]

Same applies to Xserver's with multihead configurations where each head has a
different resolution (e.g. no Xinerama enabled or Xinerama with software visual
emulation (Xsun can do that on some cards)) ...
... should we set the platform of this bug to "All/All" ?

Comment 2

[Simon Fraser [no longer active]]

I'd rather keep this mac. The solution will be different on each platform, I 
think.

Comment 3

[Kevin McCluskey (gone)]

nsbeta1- for now. Don will investigate whether using GetMaxDevice() fixes the
problem if he has time. 

Comment 4

[Simon Fraser [no longer active]]

I looked briefly at this. nsDeviceContextMac::GetDepth() needs fixing; it should 
get the deepest screen.

Unfortunately, however wrote nsIScreenManager (glares at pinkerton) didn't add 
APIs to iterage through screens, or get the deepest screen.

Maybe nsDeviceContextMac::GetDepth() can just use a Device Loop to get the 
deepest screen.

Comment 5

[Mike Pinkerton (not reading bugmail)]

ok, if those apis are needed, then we should add them. There's nothing sacred
about nsIScreenManager.

Comment 6

[ellisteer_box8003]

Related to bug?

http://bugzilla.mozilla.org/show_bug.cgi?id=61001

Comment 7

[Simon Fraser [no longer active]]

*** Bug 61001 has been marked as a duplicate of this bug. ***

Comment 8

[Christopher Hoess (gone)]

->GFX: Mac