GPU compressed textures (.dxt, .pvrtc, .etc2) for cube maps?

Questions
1

Is it possible to use GPU compressed textures for cube maps?

2

They are meant for it :slight_smile:

3

https://doc.babylonjs.com/how_to/use_hdr_environment

4

Are you sure DDS and ENV files are compressed in the GPU for iOS devices? I cannot find any supporting information

5

env are not compressed on the GPU, only on the transport I am pretty sure KTX could be great for this, adding @bghgary who knows a lot about the current KTX2 state and if we could leverage it for cubemaps.

6

The Khronos 3d formats working group is working on this off and on. Short answer is that we are not there yet.

This PR talks about some of the proposals. It was eventually superceded by this PR, but it no longer talks about IBL since we need to get the basic compressed textures working first.