I am pretty sure this time the flashing issues on Mali T880 r12 driver are finally fixed.
The fix: a queue of FBOs render to, just like before, but this time in DistortedScreen we blit not the current FBO, but the one computed several frames ago.
This of course introduces a delay and uses more memory, but it appears to work and does not seem to have any effects on speed.
I spoke too soon, the ARM Mali flashing is of course not fixed yet. The previous commit fixed Triblur, but the bug is still reproducible elsewhere (only in the 'postprocessed' apps though).
This commit introduces a circular queue in case of the postprocessing FBOs - with little success though.
Port all the 'non-controversial' changes from order-independent-transparency branch.
Make the postprocessing buffers static.
Initialize MessageSender even if compiling some of the programs fails.
Now all PostprocessEffects are truly self-contained, including dynamic enable() and all shader sources.
Simplification in PostprocessEffects
Move all the knowledge about Vertex and Fragment effects to their respective classes.
All knowledge about Postporcessing moved to the respective Effect classes.
Change of API: move setting the EGL context back to the APP.
Reorganize the way we add and remove all Effects (do it through DistortedMaster and is POSTPROCES - adjust Bucket and SORT Nodes).
Buggy: removing effects does not work.
Remove DistortedEffectsPostprocess and unify it with DistortedEffects.
Job not finished - doesn't compile now!
Progress with support for Effect classes.