PCTuning fórum

where we want to enable technology for all gamers, and not create proprietary features that lock out gamers that use our competitor's products. That said, TressFX is very computationally intensive, and hence games that use TressFX will really be able to benefit from high DirectCompute performance. Because of that, you will see Graphics Core Next-based GPUs excel when it's enabled.'

nou píše:

dexterav píše:lenže do OpenCL AMD ako vždy viacmenej nedala nič kedže je to štandart ako napr directx a NV si physx odkúpila

tak pozor AMD sa podiela na vyvoji OpenCL. staci si pozriet na zoznam ludi co su uvedeny v specifikacii. su tam ludia od AMD, Intel, nVidia, Apple, Qualcomm. taktiez pridali podporu C++ do OpenCL kernelov. zatial to podporuju iba oni ale samozrejme nic nebrani ostatnym aby to implementovali tiez. predpokladam ze to v buducnosti bude sucastou standartu. mimochodom aktivita AMD zamestnantov na OpenCL dev fore sa zvysila tak o 1000%. snazia sa riesit problemy a bugy ktore maju rozny vyvojari pri vyvoji v OpenCL.

PS3 běžela na Unixu, PS4 bude nejspíš také. Aby uměla DirectX, musela by běžet na Windows. Sony by platilo poplatky za Windows a za DirectX. Proč by to dělali?

V PS3 nevyřešili OpenGL nejlépe, byla tam nějaká zbytečná mezivrstva. Spekuluje se, že PS4 bude obsahovat nativní OpenGL, tzn to co vývojáři ovládají a co běží i jinde.

OpenGL není o moc horší než DirectX. Není náhoda, že Valve portuje Source do OpenGL a tvrdí, že je OpenGL rychlejší než DirectX.

Hodně důležitou částí enginů jsou shadery. PS3 obsahovalo Cg od Nvidie – jazyk pro shadery, který může být kompilován buď pro DirectX nebo OpenGL. Tudíž kompatibilní s ostatními systémy. Je možné, že budou stejný systém používat u PS4.

Největší překážkou u PS3 byla omezená paměť a Cell procesor. Pokud jste chtěli počítat třeba fyziku, museli jste psát kód čistě pro Cell a čistě pro ostatní systémy. Díky grafice a procesoru od AMD bude PS4 podporovat OpenCL – ekvivalent Cudy, který jde spouštět na AMD i nVidia grafikách a x86/x64 procesorech – tzn umět výpočty fyziky na GPU.

nou píše:a kto hovori ze sa musia pouzivat enginy ktore pouzivaju direct compute. ak na novych konzolach pobezi opencl tak si mozete byt isty ze sa objacia enginy ktore budu pouizivat OpenCL. taky bullet napriklad uz ma urcitu podporu pre OpenCL.

TressFX Hair revolutionizes Lara Croft’s locks by using the DirectCompute programming language to unlock the massively-parallel processing capabilities of the Graphics Core Next architecture, enabling image quality previously restricted to pre-rendered images. Building on AMD’s previous work on Order Independent Transparency (OIT), this method makes use of Per-Pixel Linked-List (PPLL) data structures to manage rendering complexity and memory usage. - See more at: http://blogs.amd.com/play/tressfx/#sthash.C45sKb25.dpuf

Poster Blacken00100
"So, a couple of random things I've learned:

-It's not stock x86; there are eight very wide vector engines and some other changes. It's not going to be completely trivial to retarget to it, but it should shut up the morons who were hyperventilating at "OMG! 1.6 JIGGAHURTZ!".

-The memory structure is unified, but weird; it's not like the GPU can just grab arbitrary memory like some people were thinking (rather, it can, but it's slow). They're incorporating another type of shader that can basically read from a ring buffer (supplied in a streaming fashion by the CPU) and write to an output buffer. I don't have all the details, but it seems interesting.

-As near as I'm aware, there's no OpenGL or GLES support on it at all; it's a lower-level library at present. I expect (no proof) this will change because I expect that they'll be trying to make a play for indie games, much as I'm pretty sure Microsoft will be, and trying to get indie developers to go turbo-nerd on low-level GPU programming does not strike me as a winner.

The big lesson we can learn from GPUs is that a powerful, wide vector engine can boost the performance of many parallel applications dramatically. This adds a whole new dimension to the performance equation: it's now a function of Cores * Clock Rate * Vector Width.

For the past decade, this point has been obscured by the underperformance of SIMD vector extensions like SSE and Altivec. But, in those cases, the basic idea was sound, but the resulting vector model wasn't a win because it was far too narrow and lacked the essential scatter/gather vector memory addressing instructions.

All of this shows there's a compelling case for Intel and AMD to put Larrabee-like vector units future mainstream CPUs, gaining 16x more performance on data-parallel code very economically.

The new version of Premiere Pro supports OpenCL accelerated effects on AMD FirePro discrete graphics and APUs, as well as AMD's consumer line of graphics products like Radeon GPUs and A-series APUs.