Progress with a more generic 'preprocess' stage of Postprocessing Effects.
OIT: move towards 4 passes ( clear - build - collapse - render )
correct oitRender again: we need to disable stencil reading and writing and restore after
OIT: lots of progress on all fronts. Still a few bugs to solve though!
Order Independent Transparency. Does not work yet.
Up library requirements to OpenGL ES 3.1 (needed for the upcoming GL_SHADER_STORAGE_BUFFER)
1) Fix for the last fix in Framebuffer2) in RenderState, reset everything to a known state (rather than mark as unknown)
Minor.
Empty change (add commented out code)
Bugfix in RenderState
Fix quality levels in Glow.
make RenderState package-local.
All knowledge about Postporcessing moved to the respective Effect classes.
Progress with support for Effect classes.