Hi, everyone. I hope that this is the right mailing list for asking these kinds of questions. Please let me know if I'm mistaken. My question is at the end of the email.
Background info: I'm working on a DDX module for a 2000-era 2D graphics card used in air traffic control systems. (BTW, I also designed the GPU for that card.) Back in the day, I wrote an abstraction layer for cfb and the rest that made it easier for me to support weird pixel modes (like four layers of 8-bit overlays and the multiple-overlay-extension), specialized pixmap memory management, 12-bit grayscale colormaps for medical imaging, acceleration for primitives that no one accelerates anymore (like arcs and 2D stipples applied to lines), and plugins for low-level driver layers for multiple GPUs. I've been tasked with supporting this card under RHEL5, which has done away with cfb. We've tried writing a whole new DDX for XAA, but it prevents us from using our pixmap manager, and we have problems trying to hook in acceleration for some of the unsupported primitives. EXA and UXA allow us to accelerate even less. After lengthy discussion with people on #xorg-devel on freenode, the consensus came to be that I should port my original abstraction layer to work on top of fb. Based on suggestions, a colleague and I started by stripping down the sunleo driver (the only one left that uses fb directly?) and then building back up the initialization and slowly plugging in acceleration and stuff. We're making progress. The server we're trying to support is on RHEL5. As such, we're forced to use xf86LoaderReqSymLists to import symbols, or else we get errors on startup. Here's the version info: X Window System Version 7.1.1 Release Date: 12 May 2006 X Protocol Version 11, Revision 0, Release 7.1.1 Build Operating System: Linux 2.6.18-53.1.14.el5PAE i686 Red Hat, Inc. Current Operating System: Linux banshee 2.6.18-164.el5 #1 SMP Thu Sep 3 03:33:56 EDT 2009 i686 Build Date: 21 January 2009 My question: I added fbCreateWindow to the list of symbols to be imported by xf86LoaderReqSymLists, but I still get an error that fbCreateWindow is undefined. I have successfully imported some other functions (fbScreenInit, fbPictureInit, fbCreateDefColormap), but this one isn't playing nice. Is there something I'm missing here? Do I have to make a call to fb or something in the server core to get it to export that symbol so that I can then import it? What other symbols am I going to have trouble getting access to? I heard that there's an alternate way to look up symbols by name. The performance on that is probably lousy, but I can do a bunch on init and store them in a structure if necessary. Thanks in advance for the help. -- Timothy Normand Miller http://www.cse.ohio-state.edu/~millerti Open Graphics Project _______________________________________________ xorg-devel mailing list [email protected] http://lists.x.org/mailman/listinfo/xorg-devel
