This CL contains two parts:
- changes to matc/filamat
- changes to filament itself
Filamat can now generate ES2 compatible shaders. Only the unlit variant
is supported. Fog and picking are supported as well.
post-processing, skinning, instancing, all lighting and shadowing are not supported.
Filament is updated to not issue commands that are not supported in ES2.
Addtionnally, the hello-triangle sample is updated to work on an ES2 device.
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