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blackberry / SDL

Simple DirectMedia Layer is an open-source, cross-platform multimedia library designed to provide a low level API.
GNU Lesser General Public License v2.1
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Is there a way to initialize using OpenGL ES 2.0? #43

Open jgranick opened 11 years ago

jgranick commented 11 years ago

Hi!

Do you think it would be possible for this to work using OpenGL ES 2.0?

I know that OpenGL ES 1.0 is hard-coded into the EGL initialization code, but I wasn't sure if you knew if it would be that simple, or if there would be other problems that would occur?

Thanks

jnicholl commented 11 years ago

The main problem was that I didn’t have a good way to expose the ability to switch between ES 2.0 and ES 1, and most of the apps that were using SDL at the time seemed to be for desktop OpenGL 1, which was closer to ES 1 than ES 2.0. I didn’t really try ES 2.0 – I think making the EGL changes should be sufficient.

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jgranick commented 11 years ago

Alright, then I'll try to take a look. On webOS, they back-ported an attribute from SDL 1.3 (2.0), SDL_GL_CONTEXT_MAJOR_VERSION.

On the OS they defaulted to OpenGL ES 2.0, but required that you set SDL_GL_SetAttribute(SDL_GL_CONTEXT_MAJOR_VERSION, 1); if you needed 1.1 instead.

Maybe that would be the "right" way of handling it, with the exception of using OpenGL ES 2.0 by default

jnicholl commented 11 years ago

That seems pretty reasonable. Feel free to do the same, if you’re feeling ambitious. I won’t have time to get around to it for a little while yet.

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