Add back WGPU_TRACE support via the new wgpu-trace feature

Author: torokati44

Cargo.lock

@@ -273,6 +273,9 @@ name = "arrayvec"
 version = "0.7.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "7c02d123df017efcdfbd739ef81735b36c5ba83ec3c59c80a9d7ecc718f92e50"
+dependencies = [
+ "serde",
+]
 
 [[package]]
 name = "as-raw-xcb-connection"
@@ -1251,7 +1254,7 @@ dependencies = [
  "pollster",
  "profiling",
  "raw-window-handle 0.6.2",
- "ron",
+ "ron 0.10.1",
  "serde",
  "static_assertions",
  "wasm-bindgen",
@@ -1278,7 +1281,7 @@ dependencies = [
  "log",
  "nohash-hasher",
  "profiling",
- "ron",
+ "ron 0.10.1",
  "serde",
  "unicode-segmentation",
 ]
@@ -1298,6 +1301,7 @@ dependencies = [
  "type-map",
  "web-time",
  "wgpu",
+ "wgpu-core",
  "winit",
 ]
 
@@ -2029,6 +2033,7 @@ dependencies = [
  "cfg-if",
  "crunchy",
  "num-traits",
+ "serde",
 ]
 
 [[package]]
@@ -2038,6 +2043,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "bf151400ff0baff5465007dd2f3e717f3fe502074ca563069ce3a6629d07b289"
 dependencies = [
  "foldhash",
+ "serde",
 ]
 
 [[package]]
@@ -2340,6 +2346,7 @@ checksum = "3954d50fe15b02142bf25d3b8bdadb634ec3948f103d04ffe3031bc8fe9d7058"
 dependencies = [
  "equivalent",
  "hashbrown",
+ "serde",
 ]
 
 [[package]]
@@ -2663,6 +2670,7 @@ dependencies = [
  "num-traits",
  "once_cell",
  "rustc-hash",
+ "serde",
  "spirv",
  "strum",
  "thiserror 2.0.11",
@@ -3577,6 +3585,19 @@ dependencies = [
  "windows-sys 0.52.0",
 ]
 
+[[package]]
+name = "ron"
+version = "0.9.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "63f3aa105dea217ef30d89581b65a4d527a19afc95ef5750be3890e8d3c5b837"
+dependencies = [
+ "base64",
+ "bitflags 2.9.0",
+ "serde",
+ "serde_derive",
+ "unicode-ident",
+]
+
 [[package]]
 name = "ron"
 version = "0.10.1"
@@ -3728,18 +3749,18 @@ dependencies = [
 
 [[package]]
 name = "serde"
-version = "1.0.214"
+version = "1.0.219"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f55c3193aca71c12ad7890f1785d2b73e1b9f63a0bbc353c08ef26fe03fc56b5"
+checksum = "5f0e2c6ed6606019b4e29e69dbaba95b11854410e5347d525002456dbbb786b6"
 dependencies = [
  "serde_derive",
 ]
 
 [[package]]
 name = "serde_derive"
-version = "1.0.214"
+version = "1.0.219"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "de523f781f095e28fa605cdce0f8307e451cc0fd14e2eb4cd2e98a355b147766"
+checksum = "5b0276cf7f2c73365f7157c8123c21cd9a50fbbd844757af28ca1f5925fc2a00"
 dependencies = [
  "proc-macro2",
  "quote",
@@ -4772,6 +4793,7 @@ dependencies = [
  "bit-set 0.8.0",
  "bit-vec 0.8.0",
  "bitflags 2.9.0",
+ "bytemuck",
  "cfg_aliases",
  "document-features",
  "hashbrown",
@@ -4783,7 +4805,9 @@ dependencies = [
  "portable-atomic",
  "profiling",
  "raw-window-handle 0.6.2",
+ "ron 0.9.0",
  "rustc-hash",
+ "serde",
  "smallvec",
  "thiserror 2.0.11",
  "wgpu-core-deps-apple",
@@ -4887,6 +4911,7 @@ dependencies = [
  "bytemuck",
  "js-sys",
  "log",
+ "serde",
  "thiserror 2.0.11",
  "web-sys",
 ]

Cargo.toml

@@ -105,6 +105,7 @@ wasm-bindgen-futures = "0.4"
 web-sys = "0.3.73"
 web-time = "1.1.0" # Timekeeping for native and web
 wgpu = { version = "25.0.0", default-features = false }
+wgpu-core = { version = "25.0.1", default-features = false }
 windows-sys = "0.59"
 winit = { version = "0.30.7", default-features = false }
 

crates/egui-wgpu/Cargo.toml

@@ -42,6 +42,9 @@ wayland = ["winit?/wayland"]
 ## Enables x11 support for winit.
 x11 = ["winit?/x11"]
 
+## Enables tracing support for wgpu. Requires setting the `WGPU_TRACE` environment variable to a directory to work.
+wgpu-trace = ["wgpu-core/trace"]
+
 ## Make the renderer `Sync` on wasm, exploiting that by default wasm isn't multithreaded.
 ## It may make code easier, expecially when targeting both native and web.
 ## On native most wgpu objects are send and sync, on the web they are not (by nature of the WebGPU specification).
@@ -62,6 +65,7 @@ thiserror.workspace = true
 type-map.workspace = true
 web-time.workspace = true
 wgpu = { workspace = true, features = ["wgsl"] }
+wgpu-core.workspace = true
 
 # Optional dependencies:
 

crates/egui-wgpu/src/setup.rs

@@ -176,6 +176,15 @@ impl Default for WgpuSetupCreateNew {
                     wgpu::Limits::default()
                 };
 
+                let mut _trace = wgpu::Trace::Off;
+                #[cfg(feature = "wgpu-trace")]
+                if let Some(path) = std::env::var("WGPU_TRACE")
+                    .ok()
+                    .map(std::path::PathBuf::from)
+                {
+                    _trace = wgpu::Trace::Directory(path);
+                }
+
                 wgpu::DeviceDescriptor {
                     label: Some("egui wgpu device"),
                     required_features: wgpu::Features::default(),
@@ -186,7 +195,7 @@ impl Default for WgpuSetupCreateNew {
                         ..base_limits
                     },
                     memory_hints: wgpu::MemoryHints::default(),
-                    trace: wgpu::Trace::Off,
+                    trace: _trace,
                 }
             }),
         }