White Screen (beta 4)

[Nop]

When updating from LWJGL beta 3 to beta 4, on a certain machine my application shows just a completely white screen. I can tell from the server connection that the application is functioning, only the screen is completely white. I doublechecked by returning to beta 3 and everything is running smoothly then, so it is definitely a problem with beta 4.

So far it has occurred on only one machine.

Any ideas?

[Matzon]

OS, gfx card etc ?

[Nop]

Sorry, here are the specs:

Computer:
Microsoft Windows XP Professional
OS Service Pack Service Pack 2
DirectX 4.09.00.0904 (DirectX 9.0c)

Graphics card SiS 741 (128 MB)
SiS 330 Mirage Integrated
Driver: 6.14.10.3700
05.10.2005


CPU Typ Unknown, 1500 MHz (9 x 167) 2200+
Motherboard Name ASRock K7S41 (2 PCI, 1 AGP, 1 AMR, 2 DDR DIMM, Audio, Video, LAN)
Motherboard Chipsatz SiS 741
Arbeitsspeicher 384 MB (PC2700 DDR SDRAM)
BIOS Typ AMI (03/10/06)

[Matzon]

I'm not sure what changes that could have caused that... elias, do you have a clue ?
that said, SIS gfx cards are notoriously crap

[Nop]

Yes, we have found quite some SIS cards that need massaging the drivers before they work. But in this case, I can switch back and forth between beta 3 (working) and beta 4 (white screen), so we didn't try to change anything about the machine so far.

[Nop]

Any ideas about this?

[Matzon]

I'll try and get Elias on it, since he's the only one that modified the internals between 3 and 4

[elias]

Bah, stupid SIS cards. I'm not sure what went wrong in beta4, but fortunately the changes in that area (windows opengl) were limited. Can I ask you to test your application in windowed mode?

- elias

[elias]

And another thing: are you using pbuffer or multisampling in the PixelFormat?

- elias

[Nop]

I'll check about the windowed mode.

I don't think I am using any of that - at least I don't know what it is :-)

[elias]

Are you using gamma, then? And can I see your initialization code that creates the Display? Do any of the standard LWJGL tests work?

- elias

[elias]

I can't find any specific suspect from the beta3->beta4 diffs, so instead I disabled a few features that could (theoretically) cause problems for you. I'd also like to know if this is a problem with the SVN HEAD version too. Please test:

http://download.oddlabs.com/elias/lwjgl.jar
http://download.oddlabs.com/elias/lwjgl.dll

- elias

[elias]

Ok, I did some more tweaking to make LWJGL opengl init code in windows simpler, so here's another version you can try out:

http://download.oddlabs.com/elias/lwjgltest2/lwjgl.jar
http://download.oddlabs.com/elias/lwjgltest2/lwjgl.dll

- elias

[Nop]

Thank you for your help.

The regular beta4 works in windowed mode, the white screen is shown only in full screen mode.

I have included your second set of libs with my debug client and made it available for testing. I'll let you know about the result.

[Nop]

The modified library in lwjgltest2 shows the same behaviour as the regular beta4 lib: Windowed mode works ok, full screen shows completely white.