Trait PlatformRenderer 

pub trait PlatformRenderer: NativeSceneHooks {
    // Required methods
    fn update_drawable_size(&mut self, size: Size<DevicePixels>);
    fn max_texture_size(&self) -> u32;
    fn gpu_specs(&self) -> Option<GpuSpecs>;

    // Provided methods
    fn set_subpixel_layout(&mut self, _is_bgr: bool) { ... }
    fn update_transparency(&mut self, _transparent: bool) { ... }
    fn destroy(&mut self) { ... }
    fn device_lost(&self) -> bool { ... }
    fn needs_redraw(&mut self) -> bool { ... }
    fn recover(&mut self, _target: RendererTarget<'_>) -> Result<(), Error> { ... }
}

What a window asks of whatever renders into it.

draw and sprite_atlas come from SceneRenderer; this adds the lifecycle a window drives, which an offscreen renderer has no reason to implement. update_drawable_size and max_texture_size are the two with no default, because a renderer that cannot answer them cannot be a window’s.

Required Methods

fn update_drawable_size(&mut self, size: Size<DevicePixels>)

The target’s size changed, in device pixels.

fn max_texture_size(&self) -> u32

The largest texture this renderer can allocate, in pixels.

fn gpu_specs(&self) -> Option<GpuSpecs>

What GPU this renderer is on, if it can tell.

Provided Methods

fn set_subpixel_layout(&mut self, _is_bgr: bool)

Whether glyphs are rasterized with subpixel antialiasing in BGR order.

fn update_transparency(&mut self, _transparent: bool)

The window’s transparency changed.

fn destroy(&mut self)

Release the renderer’s resources, keeping it reconstructible.

fn device_lost(&self) -> bool

Whether the GPU device or its surface has been lost.

fn needs_redraw(&mut self) -> bool

Whether the renderer has work the frame loop should not wait on.

fn recover(&mut self, _target: RendererTarget<'_>) -> Result<(), Error>

Rebuild from the target the renderer was built against, after a lost device or surface.

Dyn Compatibility

This trait is dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety".

Implementations on Foreign Types

impl PlatformRenderer for WgpuRenderer

fn update_drawable_size(&mut self, size: Size<DevicePixels>)

fn max_texture_size(&self) -> u32

fn gpu_specs(&self) -> Option<GpuSpecs>

fn set_subpixel_layout(&mut self, is_bgr: bool)

fn update_transparency(&mut self, transparent: bool)

fn destroy(&mut self)

fn device_lost(&self) -> bool

fn needs_redraw(&mut self) -> bool

fn recover(&mut self, target: RendererTarget<'_>) -> Result<(), Error>

Implementors