| Summary: | [965] fake transparency effect in mayavi with mesa 7.0.3 | ||
|---|---|---|---|
| Product: | Mesa | Reporter: | Brice Goglin <brice.goglin> |
| Component: | Drivers/DRI/i965 | Assignee: | haihao <haihao.xiang> |
| Status: | RESOLVED FIXED | QA Contact: | |
| Severity: | normal | ||
| Priority: | medium | ||
| Version: | unspecified | ||
| Hardware: | Other | ||
| OS: | All | ||
| URL: | http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=478960 | ||
| Whiteboard: | |||
| i915 platform: | i915 features: | ||
| Bug Depends on: | |||
| Bug Blocks: | 16029 | ||
fixed in mesa_7_0_branch feb1fa1e833b817374fb2e3f3224c64be9a680d8 |
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Bug reported by Francesco Poli on the Debian BTS recently. Occurs with 7.0.3, on i965 (not reproduced with any other driver so far), with the "mayavi2" program. He says: "I've seen the issue happen with basically any data source. The test case I prepared is based on a simple (legacy) VTK data file ('fakehurr_merid.vtk') generated by a Fortran program ('gen_fakehurr.f'). $ tar xzf mayavi2-interpolation-bug-test.tar.gz $ ls fakehurr_merid.vtk gen_fakehurr.f mayavi2-interpolation-bug-test.tar.gz $ mayavi2 -d fakehurr_merid.vtk The main window shows up, with a data source already loaded. * for menus, select Visualize -> Modules -> Surface * in the MayaVi pane, double-click on Surface * in the dialog window, check Interpolate scalars before mapping * click on the OK button A nice visualization is shown, with very smooth colored areas. * in the TVTK Scene 1 pane, click on the Obtain an isometric view button There's an area on the left where the interpolation seems to produce a strange fake transparency effect (as shown in the attached PNG image). Disabling the interpolation makes this defect vanish (but produces a less convincing visualization)." His tarball is available at: http://bugs.debian.org/cgi-bin/bugreport.cgi?msg=5;filename=mayavi2-interpolation-bug-test.tar.gz;att=1;bug=478960 And the screenshot is at" http://bugs.debian.org/cgi-bin/bugreport.cgi?msg=5;filename=foo.png;att=2;bug=478960 There's another similar report with mayavi2 on i965 but I can't be 100% sure it's the same problem: http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=478880