* Add support for KHR_materials_volume * Add ubershader support for KHR_materials_volume * Update readmes * User highp on anything that affects UVs * Add missing precision qualifiers * Fix transmission
* Add support for KHR_materials_volume * Add ubershader support for KHR_materials_volume * Update readmes * User highp on anything that affects UVs * Add missing precision qualifiers * Fix transmission