Distorted Android

OIT: move towards 4 passes ( clear - build - collapse - render )

correct oitRender again: we need to disable stencil reading and writing and restore after

correct oitRenddr again; correct coming to paused state (we could crash)

Make sure we don't create a feedback loop in oitRender

Make sure we don't create a feedback loop in oitRender

Make us read only the DEPTH part of a DEPTH24_STENCIL8 attachment.

Reengineer DistortedScreen

OIT: correct depth

Postprocessing: dont crash when we fail to compile postprocessing programs

OIT: some progress

OIT: more bugfixes

OIT: lots of progress on all fronts. Still a few bugs to solve though!

OIT: clear the postprocessing buffer with transparent white.

Properly recreate the Atomic and LinkedList buffers onPause.
We have to discard all alpha==0.0 pixels during OIT Pass1.

small correction for blending OIT colors.

minor.

OIT: something starts working ('Blur' and 'Multiblur' work, 'Triblur' and 'Transparency' do not)

Fix the 'OIT' artefacts.

Fixes ported from the 'OIT' branch:

- remove counting of transparent pixels
- various fixes for the Mali GPU

still debugging the OIT

- remove counting of transparent pixels from main fragment shader
- remove debugs and tidy up
- some fixes for the Mali GPU

Order Independent Transparency: debugging

Order Independent Transparency: some progress

Order Independent Transparency: some progress

Order Independent Transparency. Does not work yet.