Beginnings of support for DistortedEffects.drawPrivFeedback()
This commit (and reading the OpenGL ES 3.0 spec) pretty conclusively proves that, sadly, Nexus 4's Transform Feedback implementation is incomplete (doesn't work with GL_TRIANGLES primitiveMode)
Progress with TransferFeedback app - introduce two modes: USEPOINTS 'true' or 'false'.
On Nexus5X, it works with 'true' and 'false'. On Nexus 4, it works with 'true', but returns GL_INVALID_OPERATION with 'false'.
Bugfix (the thing was drawing too many GL_POINTS, this worked on Nexus 5X but not on Nexus 4)
Preparation for Transfer Feedback: Convert the meshes from client-side to VBOs.
Minimize differences from master branch.
Stride should be 0 (but for some reason it worked even with the incorrect 4)
Simplify Transform Feedback App.
Progress with moving Transform Feedback into library.
Progress with moving the Transform Feedback functionality from the APP to the library.
Transform Feedback Example.