Change the the render() API!
THis introduces some regressions with the Effects3D app.
Major: change of API.
Split DFramebuffer into Framebuffer and Screen; introduce the 'DistortedInputSurface' and 'DistortedOutputSurface' interfaces.
Try using OpenGL ES 3.0 everywhere (but if device does not support it, try creating 2.0 context - this is important because of the emulator!)
rename all the 'grid' variables to 'mesh'.
Rename Grid to Mesh
New DistortedProgram class.
Fix a lot of Lint warnings in the apps.
Again change of API. Now instead of the 'DistortedEffects.draw() and DistortedTree.draw()' we have 'DistortedFramebuffer.renderTo()'
Change of names.
Change in the API: we always have to create a DistortedFramebuffer to render to.
Some improvements for StarWars's behaviour after onPause(), but it doesn't really work yet.
Remaining 'onPause-buggy' apps: StarWars, Save.
Hide the 'depth' of a DistortedTexture inside the library, so users do not get exposed to this weirdness.
Complete the split DistortedObject -> (DistortedTexture,DistortedEffectQueue)
Beginnings of split of DistortedObject into two separate classes: DistortedEffectQueues and DistortedTexture.
Still does not compile, but pushing already.
Rename various classes; fix a bug in Around the World.
More fixes for the recent API change.
Major change in API: separate the GRID from DistortedObject; completely remove classes derived from DistortedObject.
Simplify SurfaceViews
DEFORM: add support for Regions
Matrix3D: implement quaternion effect
Make the effect Center be always 3D.
Unify Effects3D and Matrix3D (still incomplete!)
Minor stuff
Tidy up 'Matrix3D'
Skeleton of the new App: Vertex3D. So far just a copy of Matrix3D.
Rename Effects3D to Matrix3D