Godot Version
4.7
Question
How can I get detailed GPU profiling information, like the number of shader instructions, set up times, texture read instructions etc?
Use RenderDoc.
Cheers i will take a look
Is there a command line argument for specifying a child process launched by Godot - if i use Godot for the .exe to launch then Renderdoc profiles the Launcher and not the selected project … i tried selecting a project and clicking Run instead editing, tried pressing F12 but there is no effect.
Check under run options, you can specify the project and the scene
IMHO, If you really want a clean profiling, I would suggest to do a (release) build and test that. Not in the editor (or a debug build). There is so much going on when the project is running in the editor.