Add shaderc-debug feature to Vulkano-shaders (#1754)

vulkano-shaders/Cargo.toml

@@ -25,3 +25,4 @@ vulkano = { version = "0.26.0", path = "../vulkano" }
 
 [features]
 shaderc-build-from-source = ["shaderc/build-from-source"]
+shaderc-debug = []

vulkano-shaders/src/codegen.rs

@@ -193,6 +193,9 @@ pub fn compile(
         compile_options.add_macro_definition(macro_name.as_ref(), Some(macro_value.as_ref()));
     }
 
+    #[cfg(feature = "shaderc-debug")]
+    compile_options.set_generate_debug_info();
+
     let content = compiler
         .compile_into_spirv(&code, ty, root_source_path, "main", Some(&compile_options))
         .map_err(|e| e.to_string())?;