* Turn on shaders optimization by default
Release builds of Filament only work well with optimize shaders,
turning optimizations on by default will help avoid mismatches.
This change also adds -g to disable all optimizations, for debug
builds.
* Use -g on debug builds
* Use -g on debug builds
* Update tutorial_redball.md to remove matc's -O
* Update tutorial_suzanne.md to remove matc's -O
* Use -g in debug builds
This change also optimizes the size of existing images using squoosh.app.
This should make the main README a lot lighter and faster to load (it saves
several MiBs).
* WIP Add helper to upload Android bitmaps to textures
* Add missing file
* Pass custom constants for bitmap formats
* Add sample app for texturing
* Update the README for samples
* Rename variable from callback to autoBitmap
This change will allow the skybox use a compressed texture format.
For now, the old internal format "RGBM" is still honored, but in a
forthcoming change we will replace the enum with UNUSED.
