Assuming the camera doesn't move, you could simply create a plane with a power of 2 texture with the excess pixels padded with black and use the Interact2D class to position the plane in view of the camera.

Looking good! Any chance you could post up or send an APK of it's current state? I'd like to compare the framerate performance against an app I made in jPCT

"J2ObjC does not provide any sort of platform-independent UI toolkit, nor are there any plans to do so in the future. iOS UI code needs to be written in Objective-C or Objective-C++ using Apple's iOS SDK (Android UIs using Android's API, web app UIs using GWT, etc.)."

..which means it would be a big job converting jPCT to iOS. I think Egon has enough on his plate

This is a general OpenGL question not directly related to jPCT but I would like to ask if anyone here is aware of any OpenGL ES1.x changes in Android 4.2 (JellyBean MR1)?

@Egon, did you need to make any modifications for Jellybean compatibility?

I have an app that uses pure OpenGL ES1.1 and the textures are all messed up on multiple 4.2 devices plus the emulator. If I load 5 textures, the last texture loaded is used for all 5 textures, but if I load only 2 textures, those 2 textures render fine. The texture clipping is also not working properly. The whole texture is rendered instead of the clipping region.

I create the textures by:

int[] textures = new int[5];
gl.glGenTextures(5, textures, 0);

Then load an image resource into a byteBuffer and upload it to the GPU:

gl.glBindTexture(GL11.GL_TEXTURE_2D, textures[n])
gl.glTexParameterf(GL10.GL_TEXTURE_2D,GL10.GL_TEXTURE_MAG_FILTER,GL10.GL_LINEAR)     
gl.glTexParameterf(GL10.GL_TEXTURE_2D, GL10.GL_TEXTURE_MIN_FILTER,GL10.GL_LINEAR)
gl.glTexImage2D(GL10.GL_TEXTURE_2D, 0, GL10.GL_RGBA, 512, 512,0, GL10.GL_RGBA, GL10.GL_UNSIGNED_BYTE, byteBuffer) 

Drawing:

textureCrop0[0] = 0// Left
textureCrop0[1] = 0 // Bottom
textureCrop0[2] = 512// Width
textureCrop0[3] = 512 // Height
gl.glTexParameteriv(GL11.GL_TEXTURE_2D, GL11Ext.GL_TEXTURE_CROP_RECT_OES, textureCrop0, 0)


Were any of these functions changed in 4.2?
            

Not sure why all the objects are moving to 0,0,0 as a result of the collision, I'll use cubes instead and add some more debugging output to see what's going on.

New issue, the objects seem to center to 0,0,0 when I add the returned SV.

                float fTest = 25f;
      SimpleVector vcoll = null;
      //vcoll = obj3D.checkForCollisionSpherical(svPos, 5f);
      vcoll = obj3D.checkForCollisionEllipsoid(svPos, new SimpleVector(fTest,fTest,fTest), 1);
      
      // Was there a collision?
      if(vcoll.equals(svPos)==false)
      {
         svPos.add(vcoll); 
         Global.Debug("COLLISION");
         svMomentum.y = -50;
         //svMomentum.y = -svMomentum.y;
      }
      else
      {
         svPos.set(vcoll);
      }


The objects are simply moving vertically to a floor with no X and Z movement.. trying to figure out why the X and Z translation is centering to 0,0,0

Ok so the returned SV is the position in world space placing the object just before the point of collision. But for some reason it's placing the object ahead of the collision point within the collided object. Maybe it's my code.. I'll double check it.

ps. I was trying to get checkforcollisoinspherical working but had no luck hence why I posted here. Only 1 or 2 out of 50 sphere's were detecting collision despite various collideOffset values.

[edit] no worries I got collision working with the ellipse method rather than spherical...

But the returned SimpleVector is not returning the corrected point in space. The object is getting stuck below the floor for some reason. I'll keep on persisting.