Re: Porting for dummies?
On Thu, Nov 7, 2013 at 7:17 AM, Mikhail Ramendik wrote:
> Is there a tutorial/doc/manual anywhere on porting OpenGL code to
> OpenGLES, and ideally also on cross-compiling for ARM+OpenGLES under
> Debian, so that I could try to do it even before I get any real ARM
> hardware? (It seems, from discussions here, that there might be
> interesting options a few months down the line).
Debian's version of OpenGL is called Mesa and it supports normal
OpenGL on armel too, it would not be hardware-accelerated yet though
because there aren't any free drivers for that in Debian. Same goes
for hardware-acceleration of OpenGLES on ARM, no free drivers in
Debian yet. Some reverse engineering projects and free drivers exist
outside of Debian though:
https://wiki.debian.org/Mobile#software-drivers
You can install OpenGLES (libgles1-mesa-dev or libgles2-mesa-dev) on
your standard Debian amd64 PC system, try to build your code and
change it until it doesn't fail. This will be hardware-accelerated and
be easier than messing around with cross-compilers.
Here are some guides for converting OpenGL code to OpenGLES, any
issues you encounter should be fixable by using a search engine
though.
http://pandorawiki.org/Porting_to_GLES_from_GL
http://software.intel.com/en-us/articles/porting-opengl-games-to-android-on-intel-atom-processors-part-1
http://wiki.maemo.org/OpenGL-ES
Debian plans to add cross-compilers for our next release:
https://wiki.debian.org/ReleaseGoals/CrossToolchains
Until they reach Debian, here is a page about how to build cross-compilers:
https://wiki.debian.org/MultiarchCrossToolchainBuild
--
bye,
pabs
http://wiki.debian.org/PaulWise
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