Hi, I've run into a problem with YUV textures on OSX. I'm using the APPLE_ycbcr_422 extension to quickly upload YUV data to a texture. This has been working well for some time, however, now I'm seeing blank textures on some combinations of OSX versions and graphics cards. The extension is reported as being available on the systems which suffer from the problems.
This could of course mean that I've been using the extension wrong, and that I've just been lucky until now. I suspect this might be related to GL_(UN)PACK_ALIGNMENT or some other texture parameter that I'm not setting. I realize that this is most likely an OpenGL problem, but I'm using FLTK and I know there are some Mac guys around here. Even just knowing whether it works on your system might help me isolate the problem, if you report your OS and graphics card. http://www.colorlab.no/icc3d/test has links to 2 files, binary and source code versions of a small example illustrating the problem. The source has been shamelessly adapted from one of Erco's examples, since my own application contains several hundred thousand lines of code. If the spinning cube is white there is a problem, if it displays a checkerboard pattern on the faces of cube everything is ok. Does someone have any idea what the problem is? Is the example working on your mac? I've seen the bug on several Macs running OSX 10.5.6 with Nvidia 8XXX graphics cards. Thanks, Arne Magnus Bakke _______________________________________________ fltk-opengl mailing list fltk-opengl@easysw.com http://lists.easysw.com/mailman/listinfo/fltk-opengl
