kriso@northstar.dartmouth.edu (Kris Olander) (09/14/89)
We at Dartmouth are having some trouble with the R3 Xibm server in two ways: cursor colors and circle drawing speed. The first problem has to do with being able to change the cursor color via rgb values on an IBM 8514 color display. We have an X11 version of magic (Berkeley's VLSI tools) ported to X11 by Marco Papa at the Advanced Computing Suppot Center (ACSC) at USC, that uses XCreatePixmapCursor() to set the cursor color. This client program creates the correct color on our DecStation3100 server but seems to always leave the cursor as the "black" colormap entry (I don't know if that's pixel 0 or 1 - it's the same pixel value as the cursor in all the other windows) on an IBM 6152 with an 8514 display regardless of the rgb values we give XCreatePixmapCursor(). Since cursor color setting works properly on the Dec X server (and even on earlier Xibm servers), we are confident that the problem is not in the client or xlib. We are eager to fix this problem because magic sets its background color to the same color the cursor is stuck on (which makes the cursor disappear - very annoying). Another problem we are experiencing with the R3 Xibm is VERY slow circles. We know that either filled circles or hollow circles (or both) got at least an order of magnitude slower between R2 Xibm and R3 Xibm. We have an application that displays crystal lattices in 3d (lots of circular atoms) that suffers horribly when run under R3. The slowdown occurs on both 8514 and apa16 graphics hardware (run in 6152 and RT workstations, respectively). NOTE: We have applied patches 1-9 on our X11R3 source. We have also taken the latest ibm-rt...tar.Z file off of expo and compiled a new Xibm. Any information about these problems or suggestions of how we should go about fixing them would be very welcome! Mark Franklin, markf@northstar.dartmouth.edu or, # Kris Olander ---- ---- arpa: kriso@northstar.dartmouth.edu # # ---------------------------------------------------------- # # System Eng. Project NORTHSTAR # # Thayer School of Eng., Dartmouth College #