Originally posted by Lederhosen
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Eric Anholt Makes Progress With Broadcom VC4 Graphics Driver
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OpenGL ES 2.0
videocore IV supports OpenGL ES2.0 which is somewhere between OpenGL (not ES) 2.0 and 3.1.
Borrowing from Wikipedia (yeah, I'm lazy..)
It is based roughly on OpenGL 2.0, but it eliminates most of the fixed-function rendering pipeline in favor of a programmable one in a move similar to transition from OpenGL 3.0 to 3.1.
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Originally posted by robclark View Postanholt would know better, but I suspect it should be able to support and emulate enough GL to be useful.. adreno is only GLES hw, but a2xx could do enough for a GL 1.4 context, and a3xx enough for GL 2.0. Maybe not enough for compliance but enough that xbmc, some games, etc, work. No idea if that is really a priority for him or not.. I suspect at the moment dealing with all the challenges as for as shader/texture validation is enough to keep him busy.
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Originally posted by monkeynut View PostDoes this mean full OpenGL could come to the Pi as well as OpenGL ES? Or is that a limitation of the hardware?
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Originally posted by monkeynut View PostThat's a shame. It would save a lot of development time for OSS games. Still, would this allow us to play windowed games like we do on the PC? Last time I tried using OGL on the Pi I had to do things from the command line.
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That's a shame. It would save a lot of development time for OSS games. Still, would this allow us to play windowed games like we do on the PC? Last time I tried using OGL on the Pi I had to do things from the command line.
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The Raspberri Pi hardware only supports OpenGL ES 1/2.
From: http://elinux.org/Raspberry_Pi_VideoCore_APIs
The Raspberry Pi contains a Broadcom VideoCore IV GPU providing OpenGL ES 1.1, OpenGL ES 2.0, hardware-accelerated OpenVG 1.1, Open EGL, OpenMAX and 1080p30 H.264 high-profile decode. There are 24 GFLOPS of general purpose compute and a bunch of texture filtering and DMA infrastructure. Eben worked on the architecture team for this and the Raspberry Pi team are looking at how they can make some of the proprietary features available to application programmers.
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Does this mean full OpenGL could come to the Pi as well as OpenGL ES? Or is that a limitation of the hardware?
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Good to hear. I'll be keeping an eye on this driver, as I've got a Pi on a way for use as a debian-based print server and probably as a random client to dump light background workloads onto.
If it works well, I may buy another one for use as a playback-only HTPC/XBMC machine that I can stick upstairs.
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