Struct Surface

pub struct Surface<'window> {
    pub(crate) inner: DispatchSurface,
    pub(crate) config: Mutex<Option<SurfaceConfiguration>>,
    pub(crate) _handle_source: Option<Box<dyn WindowHandle + 'window>>,
}

Handle to a presentable surface.

A Surface represents a platform-specific surface (e.g. a window) onto which rendered images may be presented. A Surface may be created with the function Instance::create_surface.

This type is unique to the Rust API of wgpu. In the WebGPU specification, GPUCanvasContext serves a similar role.

Fields

inner: DispatchSurface

Additional surface data returned by [DynContext::instance_create_surface].

config: Mutex<Option<SurfaceConfiguration>>

_handle_source: Option<Box<dyn WindowHandle + 'window>>

Optionally, keep the source of the handle used for the surface alive.

This is useful for platforms where the surface is created from a window and the surface would become invalid when the window is dropped.

SAFETY: This field must be dropped after all other fields to ensure proper cleanup.

Implementations

impl Surface<'_>

pub fn get_capabilities(&self, adapter: &Adapter) -> SurfaceCapabilities

Returns the capabilities of the surface when used with the given adapter.

Returns specified values (see SurfaceCapabilities) if surface is incompatible with the adapter.

pub fn get_default_config( &self, adapter: &Adapter, width: u32, height: u32, ) -> Option<SurfaceConfiguration>

Return a default SurfaceConfiguration from width and height to use for the Surface with this adapter.

Returns None if the surface isn’t supported by this adapter

pub fn configure(&self, device: &Device, config: &SurfaceConfiguration)

Initializes Surface for presentation.

If the surface is already configured, this will wait for the GPU to come idle before recreating the swapchain to prevent race conditions.

Validation Errors

• Submissions that happen during the configure may cause the internal wait-for-idle to fail, raising a validation error.

Panics

• A old SurfaceTexture is still alive referencing an old surface.
• Texture format requested is unsupported on the surface.
• config.width or config.height is zero.

pub fn get_current_texture(&self) -> Result<SurfaceTexture, SurfaceError>

Returns the next texture to be presented by the swapchain for drawing.

In order to present the SurfaceTexture returned by this method, first a Queue::submit needs to be done with some work rendering to this texture. Then SurfaceTexture::present needs to be called.

If a SurfaceTexture referencing this surface is alive when the swapchain is recreated, recreating the swapchain will panic.

pub unsafe fn as_hal<A: HalApi, F: FnOnce(Option<&A::Surface>) -> R, R>( &self, hal_surface_callback: F, ) -> R

Available on wgpu_core only.

Returns the inner hal Surface using a callback. The hal surface will be None if the backend type argument does not match with this wgpu Surface

Safety

• The raw handle obtained from the hal Surface must not be manually destroyed

pub fn as_custom<T: SurfaceInterface>(&self) -> Option<&T>

Available on custom only.

Returns custom implementation of Surface (if custom backend and is internally T)

Trait Implementations

impl Debug for Surface<'_>

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

Formats the value using the given formatter.

impl Hash for Surface<'_>

fn hash<H: Hasher>(&self, state: &mut H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl Ord for Surface<'_>

fn cmp(&self, other: &Self) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

where Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized,

Restrict a value to a certain interval.

impl PartialEq for Surface<'_>

fn eq(&self, other: &Self) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl PartialOrd for Surface<'_>

fn partial_cmp(&self, other: &Self) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

fn lt(&self, other: &Rhs) -> bool

Tests less than (for self and other) and is used by the < operator.

fn le(&self, other: &Rhs) -> bool

Tests less than or equal to (for self and other) and is used by the <= operator.

fn gt(&self, other: &Rhs) -> bool

Tests greater than (for self and other) and is used by the > operator.

fn ge(&self, other: &Rhs) -> bool

Tests greater than or equal to (for self and other) and is used by the >= operator.

impl Eq for Surface<'_>