realtimeradiosity.com
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Realtime Radiosity, global illumination techniquewith fantastic quality considering still pretty good framerates,the best GI approach for indoor games and real-time visualizations with fully dynamic lights.Suitable for rasterizers, all local illumination models, light types,materials, shaders, graphics APIs.Many other global illumination techniques exist, even higher quality ones,however their speeds are one or more orders of magnitude lower.Realtime radiosity boom in game industry is expected to start in 2008 and continueuntil indoor realtime radiosity gets as common as realtime shadows are now.RealtimeRadiosity.com, Stepan's realtime radiosity, global illumination and rendering blag[ NEWS ] [ DEMOS ] [ TECHNIQUES ] [ PEOPLE ]Recent parallelization releases2011-11-16OpenCL 1.2was released, news behind link (no paradigm shifts today).OpenACCis a new API trying to find implementers.The problem with OpenMP is that current specification does notmanage memory, therefore implementations don't know what regions of memoryneed to be available in case of running code on GPU.And they need to know, accessing CPU memory from GPU over PCIe is tooslow, even with 2x faster PCIe 3.0 devices coming in a month or two.Solution:members of OpenMP Working Group on Accelerators did theirs joband extended OpenMP for use on GPUs, by adding necessary pragmas,e.g. for explicit copying of data between CPU and GPU memory.To be accurate, this initial release did not extend OpenMP.Instead, only GPU specific pragmas were specified in a new separated APIcalled OpenACC. If it works well,we might see these pragmas merged into future version of OpenMP.Still, there will be fight with Microsoft. As the most influentialcompiler developer, Microsoft uses its near monopoly position to promoteproprietary APIs as a way to lock customers in. Right now, Microsoftpushes competing API, C++ AMP,and tries to help it by not supporting OpenMP(ok, by supporting 9 years old version 2.0).Although both OpenACC or C++ AMP APIs look well and I wish them supportfrom GPU vendors, I did not see any implementations yet.What we have and what works best today is OpenCL for GPUs, OpenMP for CPUsand CUDA for confused developers.WebGL path tracing2011-10-03Wow, interactive pathtracing in browser, instantly added to demos.User interface makes scene completely dynamic.Each time you change geometry, light or material, javascript hardcodes everything into new glsl shader and runs it.The once known as Pong2011-09-19My wish from 3 years ago> Scenes are made of roughly 10 spheres. It makes me wonder in good sense,> we coders love limits and intros show we can do lots in 256 bytes...> can we make good gameplay with renderer limited to 10 spheres?> I guess building games on Thierry's commented source code would be piece> of cake. Any demo organizer here?was nearly satisfied in The once known as Pong project, set of realtime pathtraced nearly minigames made of10 spheres (or slightly more).It still requires
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