#937: cairo driver: d.legend colors all broken ----------------------+----------------------------------------------------- Reporter: hamish | Owner: [email protected] Type: defect | Status: new Priority: major | Milestone: 7.0.0 Component: Display | Version: svn-trunk Resolution: | Keywords: cairo, d.legend Platform: Linux | Cpu: x86-64 ----------------------+----------------------------------------------------- Comment (by glynn):
Replying to [comment:2 hamish]: > > I can't reproduce this. > > trunk/ Works for me. But looking at the image, I'm guessing that it's an alignment problem. The header is 54 bytes, which isn't a multiple of 4. The documentation for cairo_image_surface_create_for_data() says: > This pointer must be suitably aligned for any kind of variable, (for example, a pointer returned by malloc). It wouldn't surprise me if an unaligned frame buffer behaves incorrectly on x86-64. Try r41029; this pads the header to 64 bytes in everything which reads/writes these files (PNG driver, cairo driver, ximgview, wximgview, wxpyimgview). The offset to the data is stored in the header (to allow for variable-length fields and the addition of new fields), so the files should still be legal (not that most software can handle them anyhow). -- Ticket URL: <https://trac.osgeo.org/grass/ticket/937#comment:4> GRASS GIS <http://grass.osgeo.org>
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