B4A Library OpenGL 2.0 library

agraham · May 20, 2011

Android 2.2 and later support OpenGL 2.0 ES as well as OpenGL 1.0 ES. Having produced an OpenGL library for 1.0 I thought I may as well do one for 2.0 as well so here it is!

The included "demo" is not really a demo at all and does little more than test the device OpenGL capability and initialise a drawing surface. It needs someone more interested in graphics than I to take it further.

Note that the demo needs my Threading library.

EDIT:- Version 1.1 posted. See post #12 for details.

EDIT:- Version 1.2 posted. See post #16 for details.

EDIT:- Version 1.3 posted. See post #35 for details.

EDIT:- Version 1.4 posted. See post #61 for details.

EDIT:- Version 1.5 posted. See post #83 for details.
User @walterf25 has added two methods to the the library to create version 1.5. The new jar and xml are posted below in OpenGL2_v1.5_lib.zip. I have left version 1.4 as the zip for that contains a somewhat trivial demo program. Just use the new v1.5 libs and ignore the v1.4 ones.

walterf25 · Sep 28, 2019

Hi @agraham, first off thank you very much for wrapping this library, i am currently wrapping at AR library and it requires the use of the GLSurfaceView View, i had no idea that you had wrapped this library before I started wrapping my AR library, i had already wrapped some of the Opengles2.0 classes when I realized there was already this library in the forums, i was able to get some of the AR examples to compile and run just fine with B4A, i am now trying to finish wrapping some of the last classes of this AR library before releasing it to the forums, however i was wondering if you would be willing to add some more functions to your library.

I noticed that you have GLBufferDataF and GLBufferDataI for floats and integers, however I need to also have a GLBufferDataB which would take an array of bytes and another maybe GLBufferDataS which would take an array of shorts, as this library i am wrapping requires this two methods, everything else seems to have already been wrapped in your library.

Please let me know if that would be possible I realize you may be very busy as i have been this last few months wrapping this library as well.

Thanks in advanced.
Walter

agraham · Sep 28, 2019

It's nearly six years since I last looked at this and returned to desktop development only so I've forgotten almost everything about it. However here's the Eclipse project for the library, perhaps that will be of some use.

walterf25 · Sep 29, 2019

agraham said:
It's nearly six years since I last looked at this and returned to desktop development only so I've forgotten almost everything about it. However here's the Eclipse project for the library, perhaps that will be of some use.

Thanks @agraham I added the functions I needed, i have increased the version to 1.5, would you mind uploading it and edit your first post, i got my AR library working, i'm ready to upload a beta version of it, there's still something to iron out but for the most part it works as expected.

Here's the updated version.
I added the following function

B4X:

    public void glBufferData(int target, int size, Buffer buffer, int type) {
        GLES20.glBufferData(target, size, buffer, type);
    }

and this one as well

B4X:

    public void glDrawElements2(int mode, int count, int type, int offset) {
        GLES20.glDrawElements(mode, count, type, offset);
    }

On my AR library wrapper there was a need for the glBufferData function but needed to pass a Buffer type.
For the glDrawElements function i needed to pass the mode parameter, count param, type param and offset param.

Anyhow, thank you very much for wrapping this library, it definitely saved me some time as I didn't have to wrap this library.

Walter

agraham · Sep 29, 2019

walterf25 said:
i have increased the version to 1.5, would you mind uploading it and edit your first post

I'd be glad to but you seem to have posted just the Eclipse project. There's no jar or xml file and no B4A demo project . Perhaps you could take my OpenGL2_1.4.zip and replace the jar and xml with yours.

walterf25 · Sep 29, 2019

agraham said:
I'd be glad to but you seem to have posted just the Eclipse project. There's no jar or xml file and no B4A demo project . Perhaps you could take my OpenGL2_1.4.zip and replace the jar and xml with yours.

Hi abraham, I figured you would want to do a quick review of the source code and compile the jar and xml files yourself since you are the author of this lib, but no worries I will upload them in a bit so you can edit the first post and update the files.

I have uploaded an example apk file in the new libraries thread

Walter

agraham · Sep 29, 2019

walterf25 said:
and compile the jar and xml files yourself

I'm not set up to do so any more without a lot of setup so if it works for you I'm happy to post it!

walterf25 · Sep 29, 2019

agraham said:
I'm not set up to do so any more without a lot of setup so if it works for you I'm happy to post it!

Here ya go, Thanks again, if you'd like if there's any other changes that may be required in the future i can just create a separate thread and name it something like Updated OpenGL2.0 library that way i don't have to bother you to update your post every time.

Here is the updated lib files version 1.5

Walter

Informatix · Sep 29, 2019

walterf25 said:
Here ya go, Thanks again, if you'd like if there's any other changes that may be required in the future i can just create a separate thread and name it something like Updated OpenGL2.0 library that way i don't have to bother you to update your post every time.

Here is the updated lib files version 1.5

Walter

The libGDX library wraps also the OpenGL classes. What you added here was already in libGDX.

walterf25 · Sep 29, 2019

Informatix said:
The libGDX library wraps also the OpenGL classes. What you added here was already in libGDX.

Great to know, I completely forgot about libGDX, I'll play around with libGDX and EasyAR one of this day .
Walter

luke2012 · Jan 16, 2021

agraham said:
Android 2.2 and later support OpenGL 2.0 ES as well as OpenGL 1.0 ES. Having produced an OpenGL library for 1.0 I thought I may as well do one for 2.0 as well so here it is!

The included "demo" is not really a demo at all and does little more than test the device OpenGL capability and initialise a drawing surface. It needs someone more interested in graphics than I to take it further.

Note that the demo needs my Threading library.

EDIT:- Version 1.1 posted. See post #12 for details.

EDIT:- Version 1.2 posted. See post #16 for details.

EDIT:- Version 1.3 posted. See post #35 for details.

EDIT:- Version 1.4 posted. See post #61 for details.

EDIT:- Version 1.5 posted. See post #83 for details.
User @walterf25 has added two methods to the the library to create version 1.5. The new jar and xml are posted below in OpenGL2_v1.5_lib.zip. I have left version 1.4 as the zip for that contains a somewhat trivial demo program. Just use the new v1.5 libs and ignore the v1.4 ones.

Hi @agraham and thanks for this library
I have a project based on WebGL library. Is it possible to porting it within a desktop app using OpenGL library ?

agraham · Jan 16, 2021

luke2012 said:
Is it possible to porting it within a desktop app using OpenGL library ?

I'm afraid that I have no idea as I am not familiar with WebGL.

B4A Library OpenGL 2.0 library

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