Bugzilla – Full Text Bug Listing
| Summary: | SWT motif crashes when trying to use libcairo routines on 8-bit color depth | ||
|---|---|---|---|
| Product: | [Eclipse Project] Platform | Reporter: | John Reysa <reysa> |
| Component: | SWT | Assignee: | Platform-SWT-Inbox <platform-swt-inbox> |
| Status: | CLOSED WONTFIX | QA Contact: | |
| Severity: | minor | ||
| Priority: | P3 | CC: | akurtakov, eclipse.felipe, Silenio_Quarti |
| Version: | 4.0 | ||
| Target Milestone: | --- | ||
| Hardware: | Other | ||
| OS: | other | ||
| Whiteboard: | |||
Silenio, isn't is possible to detect that depth and not load cairo on our code ? Sounds like it should be something easy (?) Yes, that is easy, but we need to know if newer versions of cairo support those screen depths and only disable if necessary. As Motif is no longer supported closing the bug. Please open a new one if the problem still exists with supported version and window system. |
Build Identifier: I20100608-0911 When running on AIX-motif on a vnc session with color depth of 8 or 16 and looking at any view using forms, the platform crashed with the following message: Error: Cairo 1.4.10 does not yet support the requested image format: Depth: 8 Alpha mask: 0x00000000 Red mask: 0x00000007 Green mask: 0x00000038 Blue mask: 0x000000c0 Grant Gayed said the following about this bug: "The problem is that cairo (at least the version that you have) does not support screens with depth 8. So in theory one way to make this work on the machine(s) where you see this is to change their screen depths to something like 24. In reality this may or may not be possible, as some AIX boxes out there, including one that we used to have here, only ship with support for depths of 8 by default. For a more general solution, you could probably just delete the libswt-cairo-motif-<version>.a file from the swt 3.6 jar, which should effectively disable advanced graphics and fall back to handling them in a similar manner to 3.3, before cairo support was added. This is probably the easiest thing for you to try. If this doesn't work for some reason then let me know. Logging a new bug makes sense for this, as swt should handle cases like this better. Thanks!" I confirmed that when we run vncserver with color depth of 24, the error goes away. In addition, I followed Grant's instructions on removing the libcairo library and it worked on both 8 and 16-bit vnc sessions as he thought it would. Reproducible: Always Steps to Reproduce: 1. start vncserver session with depth equal 16 on an aix/motif platform 2. bring up eclipse 3.6 3. find a ui component using forms or advanced graphics 4. platform will lock up and crash