Baikal material demo

The demo shows material usage in new Baikal frameworks along with the abilities to load materials from XML format and override materials from existing .mtl files. The demo adds interactive DOF controls:

• W and S: control lens focal length
• Q: toggle depth of field effect
• A and D: control lens F-stop
• X and Y: control lens focus distance

To run the demo unzip the contents into Resources directory (so that all resource files are in Resources/orb), go into Resources/orb and run run_orb.bat