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Wednesday, 20 March 2013

Nvidia GTC thoughts: ARM,roadmap,demos..

Posted on 06:24 by Unknown
Last day anouncement of full OGL 4.3 support on Tegra products on ARM is huge..
I assume also Nvidia will bring all his supported extensions such bindless exts,VBUM(pointer support in GLSL), direct state access etc.. and not only core OGL 4.3..
also related Nvidia exposes some features not exposed in DX11 like support for writes to image2DMS objects will be like RWTexture2DMS if that existed on DX11 (note only RWtexture2d and texture2dms exist)..
Nvidia showed on Ubuntu and one question will be if they will/can? bring all that goodness to Android world.. I suspect at least if not they will bring via a lot of extensions to OGL ES driver similar with what they are doing to Tegra4 this year..
Also note they shown 319 drivers series and hope this will bring EGL support in NV drivers for Linux at least (related to Mir on Ubuntu efforts) and not only EGL OGL ES support like AMD currently but full OGL profile in EGL and as said for Windows too.. note I'm expecting also Optimus in Linux world soon so that could be the series..
note Nvidia showed a demo running Optix on ARM (on his blog says 1day port) and also CUDA 5.0 demos and finally IslandGL well this is a port of one of Fermi DX11 demos ISland which is avaiable to download as demo on Nvidia and features highly tesselation usage.. with that comes clear why renewed interested in NV to bring an OGL 4.0 SDK.. hope almost al techniques in NV DX11 SDK get ported as stocastich transparency to name one..
with that I recap tooling support so we experience seamless transition from PC world to Tegra world..
*Cg for ARM: bring Cg to ARM world or at least and offline GLSL 4.3 compiler that cgc has..
*OGL 4.0 SDK for ARM: as said new OGL SDK is in the works and a ARM version should be good
*OpenCL for ARM: Nvidia doesn't talk about it but I think market pressure will force them to port to ARM also.. note still no OCL 1.2 with new exts in end 2012
*TXAA: With OGL 4.3 and AAA games becoming norm in Android and IOS markets is a matter of time until one wants TXAA that tegra5 will have exposed in OGL..
*Optix: well shown so ported..
*Physx and Apex: Physx is for Android shipping interesting will be to see if they enable GPU support once Tegra5 ships with CUDA GPU (I suspect yes expecting 128/192 shaders and that also had G80 which they supported).. more interesting will be to see if Apex (right windows world only) get ported as that brings turbulence /GPU rigid bodies with fracturing the former one which is being used a lot lately in f2p games..

*Also note that will bring full DX11 to Windows on ARM products which is impressive.. I'm not certain if DX11.1 or not as GPU shipping in Kayla could be GK208 a 3rd gen Kepler says press so that  feature could be in..

Lastly an slightly unrelated I would like that NV released her impressive demos of last two/three years as executables so we can test in house like:
GTC 2010
Lighthouse
GTC 2012
Fracture raytraced demo
Optix water demo
GTC 2013
Wave works (perfect storm demo)
Face works

Some minor things to say to roadmap:
*Maxwell PC GPU: well they said will have unified virtual addresing and that tegra 6 will have denver CPU and Maxwell GPU but Maxwell desktop GPUs will have a CPU? and in that case a Denver (i.e. some form of ARM64) one? I suspect yes as if not makes little sense to say unified virtual addresing.. but why they will not say directly on Maxwell PC product? also seems if it's a Q1/Q2 2014 product can be a bit premature..
also they forgot to say context switching and preemption on GPU what I'm expecting too..
*Volta GPU: well I expected to be called Einstein after all codename it was mentioned by Dally.. can be that a latter product or is a Echelon codename? anyway that would add also very efficient interconnects (perhaps 3-6X byte/s/watt improvements)

After all also seems a new DX is in the works with possible spec published this year.. question is if it will be on first Maxwell products or not.. i.e. in GM10x or GM11x products as early 2014 seems a little soon.. perhaps after all first maxwell could arrive H2 2014 and that could bring a good release with:
*Dx11.2 or DX12 support and equivalent OGL support (5.x?)
*Hierarchical two level warp dispatcher
*Unified register/shader mem L1/ pool
*Scalar ALU next to vector ALUs like AMD 7xxx series..
*CPU with UVA access..
*Context switching and GPU preemption



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