I have checked out the changes into 4.22 rendering up to the today’s preview 1 and I already know what is necessary to change into HLSL code inside Cloudscape Seasons to make it work. We will have an specific version for 4.22, meaning that new features will have to be changed on pre-4.22 and 4.22+, hopefully the next release we will end with new features and only have future performance improvements. Luckily we already planned ahead to be this way! Cheers!