Debug information not found on Nsight

[Makogan]

OS: Ubuntu 24.04
Graphics card: Nvidia RTX 4070
cargo gpu version: cargo-gpu 0.1.0

I am trying to profile my shaders using nsight. I currently see this under the flamegraph:

I am compiling my CPU crate with debug symbols enabled.

This is how I invoke cargo gpu:

 let result = std::process::Command::new("cargo")
        .arg("gpu")
        .arg("build")
        .arg("--force-overwrite-lockfiles-v4-to-v3")
        .arg("--auto-install-rust-toolchain")
        .arg("--multimodule")
        .arg("--spirv-metadata")
        .arg("full")
        .arg("--debug")
        .current_dir(path)
        .output()
        .unwrap();

I have tried toggling the --debug flag.

I also read this.

I am uncertain as to why nsight cannot find any debug symbols.

[Firestar99]

That is most likely an Nsight issue, not a rust-gpu problem.

• --debug is equivalent to --profile=dev or not passing --release to cargo, so in theory should give you less optimizations, but I'm unsure if that actually changes the end result
• you get full debug info with --spirv-metadata full, which is the default setting
• you can verify that debug symbols are included by running spirv-dis your_shader.spv, which should print the source code of your shader and every library (including core) your shader imports (aka. use's), and contain OpLine instructions all over the place. May be quite large.
• I have myself not gotten Nsight to accept my debug symbols from spv files, even though it is the way shader debug info is supplied in vulkan, there are no mechanics available to have a separate debug symbol file
• Feel free to try RenderDoc's shader debugger and see if it accepts your debug symbols, that one has always worked for me. But RenderDoc is not a profiler.