A collection of helper classes to make working with OpenGL on Android easier.
Keeps track of the current state of the OpenGL context to avoid superfluous uploads.
Texture and it's subclasses help with binding, image mapping, and other texture operations.
Eases working with Shader programs in OpenGL. Easily compile and link programs and access their uniforms and attributes.
To export the current GL state, you simply need to create a
WriteableTexture of the size you want the exported image,
bind the framebuffer, render the state, then call getBitmap()
on the WriteableTexture.
final int width = renderer.width;
final int height = renderer.height;
WritableTexture exportTexture = new WritableTexture(4096, 4096);
exportTexture.bindFramebuffer();
renderer.onSurfaceChanged(null, 4096, 4096);
renderer.render(true);
Bitmap bitmap = exportTexture.getBitmap();
writeBitmap("read_pixels", bitmap);
exportTexture.unbindFramebuffer();
renderer.onSurfaceChanged(null, width, height);