So having my "meep.display();" in the onDrawFrame(), and everything else where it is? ('save for meeps declaration of course).
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Ok, I found what was wrong with just using my method above, the text comes out transparent, and the texture never gets updated even if I use replacetexture

Thats exactly my goal.

Or, rather, allowing anyone to place messages tied to real locations and share them with anyone else

This is why I'm using Wave-servers as a back-end, it lets people have a kinda "social" AR. They can share their posts with either individuals, groups, or the public at large.
I already got the system working on PC's with a google map style client;
http://arwave.org/ (see video)
That was more or less to prove the concept. (though as its made in qt, porting later to nokia phones shouldn't be too hard).

Now I want to make a full AR one.

• The render-to-texture code of jPCT-AE is totally untested. It's a straight port from the desktop version, so it should work if Android's drivers work correctly...but as we all know, they don't. So there is a chance that it won't work even if everything else is correct.
• Make sure that your texture has a power of two size that's smaller than the framebuffers. 60*60 isn't a good size, use 64*64 instead.

Done.
I noticed I couldnt have textures of 90x90 early because it got a
"- ERROR: Can't render into a texture larger than the current framebuffer!"
error. (despite the fact the framebuffer  is specified as 100,100)
Was this because it was rounding up internally to 128x128?

• Make sure to remove the render target before using the texture in the actual rendering.
• There's still a little ugliness in jPCT (both versions) when is comes to blitting: It requires that a world has been rendered at least once into the buffer to blit into. Any world will do. Try something like:

Code: [Select]

                        Texture textTexture = new Texture(64,64, RGBColor.BLACK);
FrameBuffer meep = new FrameBuffer(gl, 100, 100);
                        World tw=new World();
                        tw.renderScene(meep);
                        tw.draw(meep);
                        meep.display();

meep.setRenderTarget(textTexture);
meep.clear(RGBColor.BLACK);
glFont.blitString(meep, " test test test! ",
5, 5, 10, RGBColor.WHITE);
meep.display();


Thanks for your help, but I gave that a go and still nothing/transparent.
Not sure where to put that meep.removeRenderTarget(); though. Is it rendered into the texture on that ".display()", and thus any time after will do?

Where are you calling this? In onDrawFrame()?

No, onSurfaceCreate() at the moment.
What I really want to do is create a texture based on some text at any point though.

My goal is to effectively make a "add marker here" function. Which, given some text, and a position, will display a billboard with the text on at that position.
So far Ive made the billboard, complete with my own rectangle object...


Now I'm trying to assign a custom texture at that point.


[attachment deleted by admin]

Trying to get a texture from a framebuffer but its coming out totally transparent/unset :?

//set up font
Paint paint = new Paint();
paint.setAntiAlias(true);
paint.setTypeface(Typeface.create((String)null, Typeface.BOLD));
paint.setTextSize(16);
glFont = new GLFont(paint);


//created a new framebuffer to render the texture too
Texture textTexture = new Texture(60,60, RGBColor.BLACK);
FrameBuffer meep = new FrameBuffer(gl, 100, 100);

meep.setRenderTarget(textTexture);
meep.clear(RGBColor.BLACK);
glFont.blitString(meep, " test test test! ",
5, 5, 10, RGBColor.WHITE);
meep.display();

(that texture is then applied to a mesh, but it doesn't show up)

Probably something I'm not understanding about the process here.

You'll need a specific library for that as its quite complex work.
If you google around you should be able to find some open source projects for it though. Theres a lot of rapid AR development at the moment, there's tones of open source projects.
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Anyone know a good way to sycn camera angle in the code to the real camera's angle on the phone?

I know how to read the sensors and get (rough) angles in the x/y/z from both magnetic and gravitational sensors.

Not sure how to turn this into a SimpleVector for my camera though.
I'm guessing maths is involved