pouët.net

chaos information 179 glöps

• general:
• level: user
• personal:
• first name: Dierk
• last name: Ohlerich
• cdcs:
• cdc #1: Assembly 2004 invitation by Moppi Productions
• cdc #2: Agenda Circling Forth by Fairlight [web] & Carillon & Cyberiad [web]

• demo Windows fr-087: snake charmer by Farbrausch [web]
• It's great to have a release after such a long time. Yes, it's 64 bit, DX12 on latest Windows10 Version only. No use doing anything else when starting from scratch.
  
  Unfortunately the new demo system is far from finished. Did you notice the complete lack of post processing? Actually, the lack of anything but the one effect? Yes, that's all there is for now :-)
  
  -- chaos
• isokadded on the 2017-06-22 18:35:30
• demo Windows Sommerville by Nuance [web]
• this demo totally reminds me of that old 1960'ies ASD demo
  http://www.youtube.com/watch?v=3Dsz4dB6DuM
  
• isokadded on the 2011-04-29 02:32:04
• 4k Windows Code Is My Pron by Nuance [web]
• yeah
• rulezadded on the 2011-04-29 02:13:39
• demo Windows FullOfWin by Scum Of The Earth
• thumb up for the fischinger spirit.
  
  ok, this does not rule, but it is well out of the suck zone.
• rulezadded on the 2011-04-29 02:09:38
• demo Windows fr-063: Magellan by Farbrausch [web]
• moredhel: actually, you should not run out of memory. on my 4870 (X1) 1GB everything is fine.
  
  But may be you are trying an extreme screen resolution? That extra GB isn't doing anything because it's only for crossfire.
• isokadded on the 2011-01-14 10:02:06
• demo Windows fr-063: Magellan by Farbrausch [web]
• navis: the stiff stuff is just springs, but the sph is still active without having much effect. which is a pitty because the sph is a lot slower than the springs. in the last ball-scene the interaction between the drop and the stiff thing is all due to sph.
• isokadded on the 2011-01-06 02:27:16
• demo Windows fr-063: Magellan by Farbrausch [web]
• hi!
  
  we have put a little production log on our website. http://www.farbrausch.com/blog.py?which=9&date=20101127
  
  archee, smash: you are comparing my CPU implementation with other peoples GPU implementation. this is not a question of algorithm, it is a question of platforms. Yet you are right, doing it on GPU would surely have been smarter.
  
  navis: google "smoothed-particle hydrodynamics".
  
• isokadded on the 2011-01-05 20:12:04
• demo Windows fr-063: Magellan by Farbrausch [web]
• If you are curious about the amount of threading that is going on - we left some debugging options active. pressing F1 will give you an overview. The most important button is 'm', that enables the multi-threading debugger.
  
  Not all parts use multi-threading. for instance the greetings part does very little on the CPU.
  
  The cloth part uses threading, but we forgot to set the markers, so all you see are the red bars - synchronization overhead at the end of each simulation step.
  
  during the SPH blobs and balls, the yellow bars are the simulation and the green bars are marching cubes. marching cubes are way slower than simulation. some of the simulations could easily use more particles...
  
  the mandelbulb in the labs is just marching cubes again, this time with pink bars. with debug on you can easily see how we switch to static meshes when the iso value stops changing :-)
  
  the mandelbulb outside is completely different. an octtree filled with meshes generated from marching cubes. the yellow bars represent the MC. I generate volumes of iso values on the GPU. the pink bar is the read back to CPU. total pipeline stall, this is only dx9. I have DX11 version that runs smooth, but the rest of the demo does not work :-) the time during the stall is not wasted, i can use the other cores to compute the MC.
  
  pressing 'f' reveals some more stats. the vertex count is obviously wrong, but the rest is ok. the "blobheap" holds several hundred megabytes of constantly replacing vertex data (16 bytes each). I had to write my own memory management because DirectX just broke apart.
  
  
  so yes - this demo is mostly GPU bound - but only because it uses threading.
• isokadded on the 2011-01-04 21:42:03
• demo Windows fr-063: Magellan by Farbrausch [web]
• new version, only bugfixes:
  
  ftp://ftp.untergrund.net/users/ryg/fr-063_v1.02.zip
  
  
  should crash less often. actually never, except when it runs out of graphics memory.
  
  
  Tanks for all the nice comments! If you are bored or curious, try the "hidden parts" or press F1 during the demo.
  
• isokadded on the 2010-12-30 21:19:35
• game Linux Windows Mobile Phone FoembJump by Farbrausch [web] & Neuro
• miep
• isokadded on the 2010-12-29 13:32:15