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Rust bindings to wgpu native library

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wgpu-rs

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wgpu-rs is an idiomatic Rust wrapper over wgpu-core. It's designed to be suitable for general purpose graphics and computation needs of Rust community.

wgpu-rs can target both the natively supported backends and WASM directly.

See our gallery and the wiki page for the list of libraries and applications using wgpu-rs.

Usage

How to Run Examples

All examples are located under the examples directory.

These examples use the default syntax for running examples, as found in the Cargo documentation. For example, to run the cube example:

cargo run --example cube

The hello* examples show bare-bones setup without any helper code. For hello-compute, pass 4 numbers separated by spaces as arguments:

cargo run --example hello-compute 1 2 3 4

The following environment variables can be used to configure how the framework examples run:

  • WGPU_BACKEND

    Options: vulkan, metal, dx11, dx12, gl, webgpu

    If unset a default backend is chosen based on what is supported by your system.

  • WGPU_POWER_PREF

    Options: low, high

    If unset a low power adapter is preferred.

Run Examples on the Web (wasm32-unknown-unknown)

See wiki article.

Logging

wgpu-core uses tracing for logging and wgpu-rs uses log for logging.

Simple Setup

If you just want log messages to show up and to use the chrome tracing infrastructure, take a dependency on the wgpu-subscriber crate then call initialize_default_subscriber. It will set up logging to stdout/stderr based on the RUST_LOG environment variable.

Manual Conversion

tracing also has tools available to convert all tracing events into log events and vise versa.

log events -> tracing events

The tracing_log crate has a log logger to translate all events into tracing events. Call:

tracing_log::LogTracer::init().unwrap()

tracing events -> log events

The tracing crate has a log feature which will automatically use log if no subscriber is added:

tracing = { version = "0.1", features = ["log"] }

If you want events to be handled both by tracing and log, enable the log-always feature of tracing:

tracing = { version = "0.1", features = ["log-always"] }

Development

If you need to test local fixes to gfx-rs or other dependencies, the simplest way is to add a Cargo patch. For example, when working on DX12 backend on Windows, you can check out the "hal-0.2" branch of gfx-rs repo and add this to the end of "Cargo.toml":

[patch."https://github.com/gfx-rs/gfx"]
gfx-backend-dx12 = { path = "../gfx/src/backend/dx12" }
gfx-hal = { path = "../gfx/src/hal" }

If a version needs to be changed, you need to do cargo update -p gfx-backend-dx12.

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