wgpu-profiler
Simple profiler scopes for wgpu using timer queries
Features
- Easy to use profiler scopes
- Allows nesting!
- Can be disabled by runtime flag
- Additionally generates debug markers
- Internally creates pools of timer queries automatically
- Does not need to know in advance how many queries/profiling scopes are needed
- Caches up profiler-frames until results are available
- No stalling of the device at any time!
- Many profiler instances can live side by side
- chrome trace flamegraph json export
TODO:
- Better error messages
- Disable via feature flag
How to use
Create a new profiler object:
use ;
// ...
let mut profiler = new; // buffer up to 4 frames
Using scopes is easiest with the macro:
wgpu_profiler!;
Note that GpuProfiler
reads the device features - if your wgpu device doesn't have wgpu::Features::TIMESTAMP_QUERY
enabled, it will automatically not attempt to emit any timer queries.
Similarly, if wgpu::Features::WRITE_TIMESTAMP_INSIDE_PASSES
is not present, no queries will be issued from inside passes.
Wgpu-profiler needs to insert buffer copy commands, so when you're done with an encoder and won't do any more profiling scopes on it, you need to resolve the queries:
profiler.resolve_queries;
And finally, to end a profiling frame, call end_frame
. This does a few checks and will let you know of something is off!
profiler.end_frame.unwrap;
Retrieving the oldest available frame and writing it out to a chrome trace file.
if let Some = profiler.process_finished_frame
To get a look of it in action, check out the example project!
License
Licensed under either of
- Apache License, Version 2.0 (LICENSE-APACHE or http://www.apache.org/licenses/LICENSE-2.0)
- MIT license (LICENSE-MIT or http://opensource.org/licenses/MIT)
at your option.
Contribution
Unless you explicitly state otherwise, any contribution intentionally submitted for inclusion in the work by you, as defined in the Apache-2.0 license, shall be dual licensed as above, without any additional terms or conditions.