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https://github.com/bevyengine/bevy
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# Objective Fixes #6689. ## Solution Add `single-threaded` as an optional non-default feature to `bevy_ecs` and `bevy_tasks` that: - disable the `ParallelExecutor` as a default runner - disables the multi-threaded `TaskPool` - internally replace `QueryParIter::for_each` calls with `Query::for_each`. Removed the `Mutex` and `Arc` usage in the single-threaded task pool.  ## Future Work/TODO Create type aliases for `Mutex`, `Arc` that change to single-threaaded equivalents where possible. --- ## Changelog Added: Optional default feature `multi-theaded` to that enables multithreaded parallelism in the engine. Disabling it disables all multithreading in exchange for higher single threaded performance. Does nothing on WASM targets. --------- Co-authored-by: Carter Anderson <mcanders1@gmail.com>
81 lines
4.2 KiB
Markdown
81 lines
4.2 KiB
Markdown
<!-- MD041 - This file will be included in docs and should not start with a top header -->
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## Cargo Features
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Bevy exposes many features to customise the engine. Enabling them add functionalities but often come at the cost of longer compilation times and extra dependencies.
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### Default Features
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The default feature set enables most of the expected features of a game engine, like rendering in both 2D and 3D, asset loading, audio and UI. To help reduce compilation time, consider disabling default features and enabling only those you need.
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|feature name|description|
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|android_shared_stdcxx|Enable using a shared stdlib for cxx on Android|
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|animation|Enable animation support, and glTF animation loading|
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|bevy_animation|Provides animation functionality|
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|bevy_asset|Provides asset functionality|
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|bevy_audio|Provides audio functionality|
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|bevy_core_pipeline|Provides cameras and other basic render pipeline features|
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|bevy_gilrs|Adds gamepad support|
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|bevy_gizmos|Adds support for rendering gizmos|
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|bevy_gltf|[glTF](https://www.khronos.org/gltf/) support|
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|bevy_pbr|Adds PBR rendering|
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|bevy_render|Provides rendering functionality|
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|bevy_scene|Provides scene functionality|
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|bevy_sprite|Provides sprite functionality|
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|bevy_text|Provides text functionality|
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|bevy_ui|A custom ECS-driven UI framework|
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|bevy_winit|winit window and input backend|
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|default_font|Include a default font, containing only ASCII characters, at the cost of a 20kB binary size increase|
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|filesystem_watcher|Enable watching file system for asset hot reload|
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|hdr|HDR image format support|
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|ktx2|KTX2 compressed texture support|
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|multi-threaded|Enables multithreaded parallelism in the engine. Disabling it forces all engine tasks to run on a single thread.|
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|png|PNG image format support|
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|tonemapping_luts|Include tonemapping Look Up Tables KTX2 files|
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|vorbis|OGG/VORBIS audio format support|
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|webgl2|Enable some limitations to be able to use WebGL2. If not enabled, it will default to WebGPU in Wasm|
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|x11|X11 display server support|
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|zstd|For KTX2 supercompression|
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### Optional Features
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|feature name|description|
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|accesskit_unix|Enable AccessKit on Unix backends (currently only works with experimental screen readers and forks.)|
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|basis-universal|Basis Universal compressed texture support|
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|bevy_ci_testing|Enable systems that allow for automated testing on CI|
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|bevy_dynamic_plugin|Plugin for dynamic loading (using [libloading](https://crates.io/crates/libloading))|
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|bmp|BMP image format support|
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|dds|DDS compressed texture support|
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|debug_asset_server|Enable the "debug asset server" for hot reloading internal assets|
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|detailed_trace|Enable detailed trace event logging. These trace events are expensive even when off, thus they require compile time opt-in|
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|dynamic_linking|Force dynamic linking, which improves iterative compile times|
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|exr|EXR image format support|
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|flac|FLAC audio format support|
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|glam_assert|Enable assertions to check the validity of parameters passed to glam|
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|jpeg|JPEG image format support|
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|minimp3|MP3 audio format support (through minimp3)|
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|mp3|MP3 audio format support|
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|pnm|PNM image format support, includes pam, pbm, pgm and ppm|
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|serialize|Enable serialization support through serde|
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|shader_format_glsl|Enable support for shaders in GLSL|
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|shader_format_spirv|Enable support for shaders in SPIR-V|
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|subpixel_glyph_atlas|Enable rendering of font glyphs using subpixel accuracy|
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|symphonia-aac|AAC audio format support (through symphonia)|
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|symphonia-all|AAC, FLAC, MP3, MP4, OGG/VORBIS, and WAV audio formats support (through symphonia)|
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|symphonia-flac|FLAC audio format support (through symphonia)|
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|symphonia-isomp4|MP4 audio format support (through symphonia)|
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|symphonia-vorbis|OGG/VORBIS audio format support (through symphonia)|
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|symphonia-wav|WAV audio format support (through symphonia)|
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|tga|TGA image format support|
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|trace|Tracing support|
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|trace_chrome|Tracing support, saving a file in Chrome Tracing format|
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|trace_tracy|Tracing support, exposing a port for Tracy|
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|trace_tracy_memory|Tracing support, with memory profiling, exposing a port for Tracy|
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|wav|WAV audio format support|
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|wayland|Wayland display server support|
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|webp|WebP image format support|
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|wgpu_trace|Save a trace of all wgpu calls|
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|zlib|For KTX2 supercompression|
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