Fix opacity issues

[GoogleCodeExporter]

The black used for bad OpenGL surfaces seems to leak into the compositor such 
that if there is no defined background, then the black is used and appears as 
the opacity overlay. This is probably Mozilla's bug but we should fix this if 
they do not. A simple first pass would be to set the black colour to white, but 
it probably should simply be set to whatever the default background colour is. 
This needs to be fixed before final release.

Original issue reported on code.google.com by classi...@floodgap.com on 7 Nov 2010 at 5:09

[GoogleCodeExporter]

This is Mozilla's bug, it occurs on the Intel C2D mini as well with the 
official Fx 4b7 build. This is upstream.

Original comment by classi...@floodgap.com on 19 Nov 2010 at 5:00

• Changed state: Upstream
• Added labels: Mozilla

[GoogleCodeExporter]

I suspect this is

https://bugzilla.mozilla.org/show_bug.cgi?id=579985

which is already fixed as of 11-11 (didn't make beta 7). When I pull for beta 
8, we'll recheck this.

Original comment by classi...@floodgap.com on 20 Nov 2010 at 7:16

[GoogleCodeExporter]

In our test beta 8, this is fixed. Excellent!

Original comment by classi...@floodgap.com on 3 Dec 2010 at 6:28

• Changed state: Verified