Hi; On Wed, 2008-11-12 at 01:32 -0800, Carsten Haitzler wrote: > > > > Uuhhh - if your saying you take a hit in moving image data from system > > to texture memory then yes of course you will on certain hardware > > setups. How much this hit is and how relevant that is to the real world > > is debatable *but* this is a dumb argument anyway Clutter on GPU will > > outperform many 100x in terms of rendering operations (and more) > > compared to software only options. If it did not, GPU's would not exist. > > hmmm i would have to say "many 100x" is going to be a major leap. we > actually have benchmarks. gl vs software. sure.some things are a lot faster in > gl (5-10x). others.. software beats gl. in fact the averags fps i get on a > normal desktop (2x core core2 3ghz) vs an nvidia 8600gt - evas. gl vs > software_x11 - over all tests in expedite (which is a fair few) gl gets an > average of about 1100fps (from memory) and software is pushing 800fps or so... > got real numbers. that's from memory - but on my current laptop. > > nvidia 8600m (mobile) vs core2 due 2.3ghz mobile: > 868fps vs 671fps (for all tests) > > let me quote some "interesting results".
[snip] I cannot believe you are trying to argue that graphics on a GPU are only marginally faster than all done on the CPU. Have you ever tried running a modern first person shooter all in software ? My point re CPU usage is that by its very nature graphics effects done with OpenGL will use less CPU as they are doing the work on the GPU not the CPU. I am sure if you know what you are doing - i.e avoiding heavy large animations etc - you can avoid starving the CPU with evas. With Clutter this kind of thing isn't so much an issue. The downside is of course with Clutter is that your hardware needs accelerated GL and evas does not have that requirement. When I created Clutter I made the assumption that GPUs were becoming commodity and thus it made sense to build and design Clutter only targeting OpenGL based hardware accelerated backends. That also meant not bringing in the 'baggage' of also supporting software rendering in its design of which I think is a big advantage (mainly due peculiarity's of OpenGL API). Its obvious you disagree with this approach - and surely thats a good thing, it means Clutter is not treading on evas's toes. Please can we just leave it at that, this is getting silly. Surely you have better things to do with your time ? == Matthew --------------------------------------------------------------------- Intel Corporation (UK) Limited Registered No. 1134945 (England) Registered Office: Pipers Way, Swindon SN3 1RJ VAT No: 860 2173 47 This e-mail and any attachments may contain confidential material for the sole use of the intended recipient(s). Any review or distribution by others is strictly prohibited. If you are not the intended recipient, please contact the sender and delete all copies.
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