OpenGL

[stowelly]

Hi, im primarily a c++ developer and just got my Pi yesterday , but have found from searching a bit that you can currently only use opengl es.... which is fine, but I was wondering what language opengl es on the debian image is currently setup for? couldnt find much in the way of examples on there, apart from a couple of framebuffer gl programs.

thanks

[ArborealSeer]

there are some examples on this forum, and one fellow forumer is going to be making a series of examples.

i've been asking for a dedicated gl/graphics programming section, follow the link in my sig and add your voice!

[stowelly]

Thanks, Ive replied to it. do you have any links to any of these examples?

[ArborealSeer]

found over in the c++ section

http://www.raspberrypi.org/phpBB3/viewt ... =33&t=5727

[stowelly]

ah, thank you, I also found this http://benosteen.wordpress.com/2012/04/ ... x-windows/ , for anyone else who reads this thread, should be at least be able to get porting my OpenGL stuff.... however might be more convenient for developing framebuffer only stuff to work on a pc and execute commands via ssh to the pi plugged into a screen

[theHetman]

I'm the guy that Arboreal mentioned above that's working on a few demos. My first task is to build a framework which abstracts all of the custom broadcom/EGL/XWindows code so that the demos can be pure GLES 2 and OpenVG. Part of that process will allow rendering to an XWindow. I'm going slowly and researching and checking things as I go.

The link to the blog that you posted above has code taken directly from the "hello_triangle.c" demo in /opt/vc/src/hello_pi/hello_triangle/ As far as I know that's the only example from Broadcom of how to set up GLES.

[ArborealSeer]

i've been assuming the samples that come with most other es platforms like Mali etc will recompile with limited modification like the bcm_init()) function ?

that provides a few more avenues

[theHetman]

i've been assuming the samples that come with most other es platforms like Mali etc will recompile with limited modification like the bcm_init()) function ?

that provides a few more avenues

It's more complicated than that. The Mali demos all compile to run under X Windows which as yet GLES doesn't support on the Pi. There is no X Windows code in any of the Broadcom demos as no one there has X Windows experience. Once I get my framework done it should be pretty easy for lift the GLES part out of other demos and hook it into the framework.

[ArborealSeer]

ok, so if people knew how to replace the x windows specific stuff it'd just work (tm)

framework will certainly been super handy, i notice even now that most of the code i come across has some kind of DNA reaching back to the nehe tutorials