B4A Library OpenGL 2.0 library

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.
 

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Last edited:

GDO

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Thank you !

Do you know, why my apk is result.apk and not bitmap.apk ?
(I guess is not the right place to ask about that but my program is in this thread).
 

Informatix

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I can test my programs on 3 devices (Samsung Galaxy Notes, Nexus 7 and Asus Transformer TF300).

My first program (colored triangle with OGL2) runs OK on the 3 devices .
My second program (square with one texture OGL2) doesn't run on my Asus but runs OK on the 2 others devices.

Do you know if there is something special to do with OGL2 and Asus ?
Could you, please, try my program ?

In landscape mode, the monkey does not show on some of my devices (e.g. Nexus 7). In portrait mode, all is OK.
 

GDO

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Thanks Agraham and Informatix for your answer.

My Asus got a keyboard and the program runs in landscape mode.

I have to manage the reload of the bitmap in this case.

Thank you very much for your help.
 

GDO

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I think the ratio trouble could be solved by changing that :
#FullScreen: False ------------> True
#IncludeTitle: True -----------> False
Am I right ?
 

GDO

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Hello,

The trouble was about ratio and vertex shader, as you said.
I fixed it.

Thanks.
 

GDO

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Hello,

Could you please, change these 2 functions :

glCompressedTexImage2D
glCompressedTexSubImage2D


" data As java.nio.Buffer " should be replace by the same type like you did for gltexImage2D

Thank you.
 

agraham

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I actually did nothing for glTexImage2D and glTexSubImage2Dto let them accept a Bitmap parameter, a class call GLUtils provide those methods.

Did you want to pass a Bitmap to glCompressedTexImage2D and glCompressedTexSubImage2D? From what I can see they accept an image in some sort of compressed format. I am afraid I do not know enough about OpenGL or Android Bitmap handling for that matter, to even guess how to implement this. If anyone can explain what is needed I'm willing to have a go.
 

GDO

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I wrote glTexImage2D and glTexSubImage2Dto but I thought to glBufferData.

I wanted to pass a pointer on bytes to glCompressedTexImage2D and glCompressedTexSubImage2D and I thought opengl will manage it.

I don't know how to generate ppm files (ericson can convert ppm to ktx but my ppm files (from Paint Shop Pro X2) are not OK).

And last but not least, I need to generate compressed files inside my program (for shadow maps for example) and I don't know how.

So, for the moment, I will not use compressed textures.

Sorry for my last post.

:signOops:
 

PhilN

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Hi Graham, I have a project in which I am trying to implement motion sensing. That is using the 3-axis accelerometer, gyro and magnetometer data, applying sensor fusion to integrate the data (using Kalman filter techniques) to create a 3D virtual motion path that closely resembles the motion of the initiating device, my Samsung Galaxy SII. I was so very excited to see that you wrote a wrapper for OpenGL for B4A. I immediately downloaded and installed a few examples and used Jim Browns ModelUtil to convert a few objects and tried it out. Great success! I however would like to use the glVertex and glBegin and glEnd functions. This would really save me as I need to draw countless points and lines as you can imagine. Would you be so kind as to include these functions in your OpenGL2 library.
:sign0085:
Please... Please... Please...
 

Informatix

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Hi Graham, I have a project in which I am trying to implement motion sensing. That is using the 3-axis accelerometer, gyro and magnetometer data, applying sensor fusion to integrate the data (using Kalman filter techniques) to create a 3D virtual motion path that closely resembles the motion of the initiating device, my Samsung Galaxy SII. I was so very excited to see that you wrote a wrapper for OpenGL for B4A. I immediately downloaded and installed a few examples and used Jim Browns ModelUtil to convert a few objects and tried it out. Great success! I however would like to use the glVertex and glBegin and glEnd functions. This would really save me as I need to draw countless points and lines as you can imagine. Would you be so kind as to include these functions in your OpenGL2 library.
:sign0085:
Please... Please... Please...

Agraham cannot implement what does not exist in OpenGL ES (please note the ES). Android does not embed a full featured OpenGL.
 

John D.

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Thank you for this library, Mr. Graham. I've left a tip in the jar for you.

Being new to all this, I tried running the demo included in the zip and ran into a few problems, most likely due to my blithering ignorance. I've posted a few questions in the questions forum, could you please have a look if you get some time?

Thanks

--John--
 
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