d3c4248946
The Studio lights are now loaded from disk. The location is `datafiles/studiolights` they need to be JPG for now. JPG cannot store HDRI color range but they are clamped inside the Workbench engine for speed reason. I didn't select JP2K as it might not be enabled. Users can add upto 20 HDRI files. This limitation is inside the RNA_space.c Currently the icons are calculated when you first open the selection box for the HDRI's. We could add them to a background rendering later. I added 2 test files a sky texture rendered in Cycles and an HDRI from cloud.blender.org.