Duncan Cragg has a way.

I don't want to wait until the hardware is released for people to start porting 3D apps!

So can we use any of the information here for Maemo 5?

OpenGL ES for SDL 1.3 (Pandora)

Ok, well just got a response from Kimmo Hämäläinen in the developers mailing list. Looks like there won't be any GL games in Maemo for a while.

I guess the good news is that he's working on it.

The other good news that he mentions in one of his posts is that hildon-desktop will be open-source, so we should be able to fix it to allow game playing or whatever else (by whatever method we choose).

Isn't hildon-desktop open source already?

Probably yes, but no hw accel atm so is a moot point

I didn't think that it was good news when he said, "it will be open source; fix it yourself," I think that was a frustrated response to my comment, "That's disappointing," but I did think his response that he's working on it is good news.

I think that I should quote my answer to this question also this Forum:

I have been having several presentations to maemo community how to use OpenGL-ES in maemo
You can find them from my blog http://blogs.forum.nokia.com/blog/ka...rum-nokia-blog
It is ot so much question of transition libraries but understanding what is OpenGL-ES and
how it relates to desktop OpenGL

I checked pandora wiki http://pandorawiki.org/Development_tutorials . It looks a like
they are having very similar approach, no silver bullet OpenGL to OpenGL-ES translation library
but just OpenGL-ES1.1 tutorial and example how to use OpenGL-ES with SDL.
I have had my tutorials about how to use OpenGL-ES2.0 and how to use it with Qt .

If you read http://pandorawiki.org/OpenGL_ES_1.1_Tutorial . It tells a lot what is
the qestion. There is just no single "OpenGL" but desktop OpenGL has many, many
legacy layers of API's . Mobile OpenGL implements only the most efficient subset of them.
Because there is hundreds of ways to use OpenGL, there is no simple way to convert.

The pandora OpenGL-ES1.1 wiki tries to explain ( as i had in my presentations/blog and maemo wiki page )
that as example OpenGL has legacy API glBegin/glVertex/gEnd that are obsoleted in OpenGL-ES
and OpenGL-ES only supports way to pass vertexes as array. Of course passing them as array is much
more efficient, just one API call with big number of vertexes as opposed one call for one coordinate point.
That just an example what is the difference.

For game developer it is much more sense port the application to use vertex arrays because it is
more efficient also in desktop.

When we go to OpenGL-ES2.0 or Desktop OpenGL-2.0, we have thing called programmable shaders.
OpenGL1.x or OpenGL-ES1.x has fixed function non programmable pipeline doing transformations and lighting.
In OpenGL-(ES)2.0 it is all programmable and it offers much more features to make much better
looking games. I strongly recommend to take it in use.

If you still would like use fixed function pipeline to port old not so advanced games, you can
still use OpenGL-ES1.x emulation libraries in maemo. I hope that we can get them in to next
SDK release.


Kate

Port games to OpenGL ES 2.0 and they will work. Last week I saw a proof of concept and I was impressed.

That is excellent news. It is good to hear that this is being addressed inside Maemo, and clearly it is intended to be ready by the time hardware is released.