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# bevy_headless_render
[](https://crates.io/crates/bevy_headless_render)
[](https://exvacuum.github.io/bevy_headless_render)
A plugin for the [Bevy](https://bevyengine.org) engine which allows for headless rendering.
Every frame will be copied from `HeadlessRenderSource` render textures into `HeadlessRenderDestination` images each frame.
## Compatibility
| Crate Version | Bevy Version |
|--- |--- |
| 0.1 | 0.14 |
## Installation
### crates.io
```toml
[dependencies]
bevy_headless_render = "0.1"
```
### Using git URL in Cargo.toml
```toml
[dependencies.bevy_headless_render]
git = "https://github.com/exvacuum/bevy_headless_render.git"
```
## Usage
In `main.rs`:
```rs
use bevy::prelude::*;
use bevy_headless_render;
fn main() {
App::new()
.add_plugins((
DefaultPlugins
.build()
.disable::<WinitPlugin>(),
ScheduleRunnerPlugin::run_loop(Duration::from_secs_f32(1.0 / TICK_RATE)),
bevy_headless_render::HeadlessRenderPlugin,
))
.run();
}
```
When spawning a camera:
```rs
let size = Extent3d {
width: 640,
height: 480,
depth_or_array_layers: 1,
};
let mut image = Image {
texture_descriptor: TextureDescriptor {
label: None,
size,
dimension: TextureDimension::D2,
format: TextureFormat::R8Unorm,
mip_level_count: 1,
sample_count: 1,
usage: TextureUsages::TEXTURE_BINDING
| TextureUsages::COPY_SRC
| TextureUsages::RENDER_ATTACHMENT,
view_formats: &[],
},
..default()
};
image.resize(size);
let image_handle = images.add(image); // ResMut<Assets<Image>>
commands.spawn((
Camera3dBundle {
camera: Camera {
target: image_handle.clone().into();
..Default::default()
},
..Default::default()
},
bevy_headless_render::HeadlessRenderBundle {
source: headless_render_sources.add(HeadlessRenderSource(image_handle.clone())), // ResMut<Assets<HeadlessRenderSource>>
destination: HeadlessRenderDestination::default(),
},
));
```
The HeadlessRenderDestination component will contain the extracted image which can be used or saved for whatever you need.
## License
This crate is licensed under your choice of 0BSD, Apache-2.0, or MIT license.
|
