wolvic-3D-environments

Wolvic 3D environments

This is the official repository of 3D environments that are shown as available for the Wolvic VR Browser. Environments are cube map sky boxes with 6 images (described below). Anyone can submit a potential new environment for inclusion, and users can browse and select them from Wolvic itself through the “Environment” section in the Settings.

Adding a new environment

1. Environment creators need to provide 6 different images, one for each face of a cube
2. Compress the new textures
   • It can be generated using the mipgen software
   • Available in Debian in libfilament-tools
   • Command: mipgen -f ktx -m 1 -c etc_srgb8_rgba_100 <source.png> <destination.ktx>

   • To generate all of them in a loop

     $ for f in PATH_TO_UNCOMPRESSED_DIR/*png; do mipgen -f ktx -m 1 -c etc_srgb8_rgba_100 $f PATH_TO_DESTINATION_DIR/$(basename ${f%.*})_srgb.ktx; done

     • The new .ktx textures should be 513kB size. If they’re bigger then you are either not using 1024x1024 images or you’re generating textures with alpha layer
3. The new environment must be in its own folder and it should provide 5 files, since some devices don’t support ktx compression format (the default)

   • A 256x256 screenshot of the new enviroment (env_name.[png

     jpg])

   • A zip file with the ‘rgb’ textures with ‘ktx’ compression (envName.zip)
   • A zip file with the ‘srgb’ textures with ‘ktx’ compression (envName_ktx_srgb.zip)
     • both the zip and the files it contains must have the ‘_srgb’ prefix
   • A zip file with the ‘rgb’ textures with ‘jpg’ compression (envName_jpg_rgb.zip)
   • A zip file with the ‘srgb’ textures with ‘jpg’ compression (envName_jpg_srgb.zip)
     • both the zip and the files it contains must have the ‘_srgb’ prefix

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