Since it's not possible to update 300+ shaders manually and automation was possible, I thought that I'd take the honor and create a script that's able to automatically convert all of the shaders to be cross-compatible with Vulkan. And change the graphic pack versions to version 4 of course.
Also, the script has some nifty testing code which compiled every shader as OpenGL and Vulkan, but for that see the details that I've written below.
**Here's the script that I've made to do all of this. No manual edits were needed:**
https://gist.github.com/Crementif/8d98a855b95f219d95298fb3db99deae
Accidentally applied a suggested fix to the wrong game. Reverted that and applied it to the correct game. Also changed the description of the performance pack slightly so that people know what it does. Could probably be more conclusive about what it does. Looks like a regular shadow resolution pack to me.
Didn’t realize that VS uf_uniformRegisterVS[ARi.x+2].y is actually used
to offset sampling x4 when doing the custom PS blur shader. Reverting to
simple scale by res in the meantime