http://libra.dyndns.org/~tkh/wp Sat, 17 Jun 2006 04:35:37 +0000 http://backend.userland.com/rss092 en I designed a GUI for an OpenGL application using Qt Designer, and encountered some glitches. First, you have to subclass QGLWidget class, say MyGLWidget, and put OpenGL stuff there. Then open Qt Designer and place a some container widget in a window as a place folder for MyGLWidget. ... http://libra.dyndns.org/~tkh/wp/?p=306 I had to check if VTK license is compatible with GPL. The archive of a debian ML shows that it is compatible. Now I'm sure I can use Qt as a GUI for VTK based programs. http://libra.dyndns.org/~tkh/wp/?p=305 SGI filed for Chapter 11 Bankruptcy. I think it was doomed since nvidia had released GeForce. http://libra.dyndns.org/~tkh/wp/?p=304 I stumbled on the KernelNewbies Wiki about a new feature in kernel 2.6.16: Add /proc/sys/vm/drop_caches. Writing to this will cause the kernel to drop clean caches, dentries and inodes from memory, causing that memory to become free. This is mainly useful for benchmarking, for getting consistent results between filesystem benchmarks without ... http://libra.dyndns.org/~tkh/wp/?p=303 Last week, my dual core Athlon 64 box crashed. I was converting a movie to mpeg2 to burn a DVD video on Windows when it happened. Then the weird things happened and eventually I had to repartition the hard drives. The only good side was that I ... http://libra.dyndns.org/~tkh/wp/?p=301 My iBook's battery has started to work again today. I'm not exactly sure what brought the battery back to alive, but probably a complete discharge of the battery did it. It's getting old and the processor speed is relatively slow (G3 800MHz), but I can write code and ... http://libra.dyndns.org/~tkh/wp/?p=300 Suddenly my iBook's battery died. The battery indicator on the menubar shows that there is no battery installed. I've used it for more than three years, so I may just have to admit that the battery lasted very long. Nonetheless, it's very inconvenient to connect my iBook ... http://libra.dyndns.org/~tkh/wp/?p=299 Microsoft has planned to drop full OpenGL support *again* on Windows Vista with their compositing desktop engine like Quartz 3D in Mac OS X. When the desktop composition is enabled, OpenGL commands are translated to Direct X equivalent ones at run time, dropping OpenGL based applications performance to ~50%. ... http://libra.dyndns.org/~tkh/wp/?p=297 3Dlabs announced that it will de-emphesize the professional graphics buisiness and focus on the portable handheld device market. I knew that their products are not very impressive, but they have driven the evolution of the OpenGL API. They pushed the OpenGL ARB very hard to make GLSL part of ... http://libra.dyndns.org/~tkh/wp/?p=296 Last night we had a coding competition at school sponsored by topcoder.com. I was able to solve the first problem in 15 minutes, but it took me so long to solve the second problem. The second problem is to find the largest triangle from a set of colored ... http://libra.dyndns.org/~tkh/wp/?p=294