A real-time flight over South Greece
(September 2003)
A demo of the OpenGL implementation of Trender
Being curious about Trender's performance, I searched for polygon representations of my country, and eventually found the GTOPO30 dataset. Using these data, I coded a real-time "flight-simulation" over South Greece (including the Aegean Islands and Rhodes).On my Athlon XP 1600 (1,4GHz) with a Radeon 9600, I get 35 frames per second for the 2Km map (at 107000 triangles per frame!)
Screenshots:
- Manual face pre-lighting
- Optimized mesh
- Compiled Vertex Lists
Download:
- Win32 demo by clicking 4Km (350KB) or 2Km (1.2MB).
The first one has sampled the terrain every 4000 meters, the second one every 2000 meters (if you have a fast CPU/Card, I suggest the 2Km one).
Needless to say, if you don't have a fairly decent OpenGL card, be prepared for really slow frame rates (107000 triangles per frame...) - Linux demo here
You still need one of the above Win32 packages for the map data!
To run it, make sure you have hardware accelerated OpenGL in your X server and SDL installed.
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