R2VB is nice feature, but Im afraidвЂ¦ it will be used in very rare situationsвЂ¦ maybe in some very hw dependent software. Now, we are facing with texture filtering issue on ATI. Game donвЂ™t use extra features from hw-1 and hw-2вЂ¦ ieвЂ¦ useless tranistors on GPUД«ecause of this, most games doesnвЂ™t use 3Dc or Vertex texture fetch.Game work nice on both hw, but not using latest features and effects.Game work perfectly on hw-1 but work sloppy on hw-2.This force developers to write separate codepaths for ATI na NVidia. Combination of this effect may or may not work on some hardware.Д«igger problem is huge and growing hw architecture difference. You can play games with or without HDR and with or without FSAA.

I just not understand why Nvidia dont implemented High Dynamic Hange with FSAA вЂ¦it turned to be a great point in favor of ATI hardwareвЂ¦at least for gamers I dont wanna to bring a discussionвЂ¦just trying to get some information =) I use to call ATI as she =P вЂ¦ from what i am reading hereвЂ¦it seems that ATI hardware is more fore gaming than for developingвЂ¦looks like tha hardware lack in the support for some OpenGl featuresвЂ¦these features that lacks in ATI hardware are too important for 3D development? you guys tha work with this (im just a gamer trying to understand things better) вЂ¦ any of you use ATI to work? in this area how does Nvidia compare with ATI? I also would like to have instancing but I see they have good reasons for not proposing it.hmm thanksвЂ¦so because of marshallingвЂ¦instancing become вЂњuselessвЂќ because marshalling can do the same and can do it faster?.tha is what i have understood Because of this, the improvement using instancing itвЂ™s expected to be so low itвЂ™s not worth implementing it.

Marshalling allows to take a certain amount of calls (say 150 but itвЂ™s just a random number) and send them all at once to the video card, thus eating much less cpu power than their counterpart. Some other users notice however that GL has marshalling. Some OpenGL users noticed that GPU performance improve almost with batch size and that thereвЂ™s no point in using 2000 function calls when you can do, say, just 400. This question comes regularly in other formsвЂ¦ try check it out but the outline follows: ItвЂ™s not that it not useful itвЂ™s just much less useful than d3d. Originally posted by armored_spiderman:Д¬an you explain better to me how instancing can be good in d3d and not in OGL?

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