I followed the instructions from: http://docs.unrealengine.com/latest/INT/Platforms/GoogleVR/QuickStart/index.html
and when I export with ATC selected I get the following log messages when starting the app:
06-05 14:15:09.595: D/UE4(11959): [2016.06.05-12.15.09:602][-6918240]LogTexture:Error: Texture2D /Game/StarterContent/Textures/T_Explosion_SubUV.T_Explosion_SubUV is unknown which is not supported.
(just one texture message pasted here - however approx 90% of my textures get this), which results in missing textures in the game.
Is there some texture compression setting that is not supported for ATC ? Is ATC required for Daydream and what is the advantage of it?
When exporting at ETC2 the error is
not shown and all textures are seen.
EDIT: Also occurs in 4.13