Enum display_utils::LayerConfig

pub enum LayerConfig {
    Color {
        pixel_format: PixelFormat,
        color_bytes: Vec<u8>,
    },
    Primary {
        image_id: ImageId,
        image_metadata: ImageMetadata,
        unblock_event: Option<EventId>,
        retirement_event: Option<EventId>,
    },
}

LayerConfig is a variant type of the two distinct layer configuration types that are supported by the display driver: Primary and Color.

Variants

Color

A color layer contains a single color.

Fields

pixel_format: PixelFormat

Pixel format of the color.

color_bytes: Vec<u8>

Bytes representing the color. This must conform to the layout implied by pixel_format.

Primary

A primary layer is draws its pixels from a sysmem buffer backed image and supports various transofmations.

Fields

image_id: ImageId

The ID of the image that should be assigned to the primary layer. See the image mod in this crate to negotiate an image buffer with the display driver that can be used in this configuration.

image_metadata: ImageMetadata

Describes the dimensions, pixel format, and usage of the layer image.

unblock_event: Option<EventId>

When present, the display driver will not apply the configuration until the client signals this event.

retirement_event: Option<EventId>

Event signaled by the display driver when a display configuration has been retired (i.e. it is no longer active) following the application of a new configuration.

Trait Implementations

impl Clone for LayerConfig

fn clone(&self) -> LayerConfig

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for LayerConfig

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.