However, usually you will want to still have a pack that works if respackotps is not present. In that case, canvas will still load the file,
however, values that respackotps registers will not be available leading to compile errors.
To avoid this, I recommend creating a source file in your own shader which will load default values if respackotps isn't present. You can do that as follows:
To view the code respackotps generates for your pack, you can run the `/rpo dump glsl` command in minecraft (You must enable the `debugCommands` config option for this).