21 Jan 2011 lkcl   » (Master)


i'm looking up information about the PowerVR 3D SGX Engine in order to assist tomasz with his reverse-engineering project, http://code.google.com/p/gles6410.

there is... a great deal of shit and misinformation out there. one of the down-sides of google android is that the number of forums has exploded, with the number of misinformed opinions and the sheer number of AOL-esque "metooings" just completely overwhelming the actually useful contributions - such as tomasz' work.

it took forever to find the GLES6410 project. and no, tomasz' work is NOT restricted to just the S3C6410 - it is very very relevant for absolutely all of the PowerVR SGX Series, due to the architecture of PowerVR. all that the CPU manufacturers do is provide a subtly different "shim" to access the PowerVR's registers and interrupts - that's it. beyond that: once you have a GPL Linux Kernel "shim" driver which makes the access to those registers identical right across all hardware - be it OMAP, Samsung, iMX series from FreeScale or even Intel PPA (Poulsbo, whatever, i don't actually care) from that point on it's pretty much all the same.

i say "all the same" but there do exist subtle bugs in the hardware implementations, and also variations such as the number of parallel engines and various upgrades / versions but effectively yes, it's all the same.

that makes tomasz' work um... incredibly valuable, and i would very much appreciate it if people could spread the word, pitch in and help him out. PowerVR has a hell of a lot of momentum and a very large amount of market share: it's too important to leave it to imgtec to maybe release a Free Software Library in Q3 2011.

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