Enum DynBackend 

pub enum DynBackend {
    Soft(Box<SoftBackend>),
}

A runtime-polymorphic render backend that implements RenderBackend.

Wraps either SoftBackend or WgpuBackend (behind wgpu-compat feature) and forwards all RenderBackend method calls to the active variant. The CPU and GPU paths share the same DrawList command format (defined in oxiui_core), so callers do not need to change anything when the active backend changes.

Construct via DynBackend::soft or — when the wgpu-compat feature is active — via DynBackend::wgpu.

Variants

Soft(Box<SoftBackend>)

CPU software rasteriser.

Implementations

impl DynBackend

pub fn soft(width: u32, height: u32) -> Self

Wrap a SoftBackend as the CPU path.

pub fn kind(&self) -> BackendKind

Return the active BackendKind.

pub fn is_soft(&self) -> bool

Return true if the active backend is the CPU soft rasteriser.

pub fn as_soft(&self) -> Option<&SoftBackend>

Borrow the inner SoftBackend, or None if the GPU path is active.

pub fn as_soft_mut(&mut self) -> Option<&mut SoftBackend>

Mutably borrow the inner SoftBackend, or None if the GPU path is active.

Trait Implementations

impl RenderBackend for DynBackend

fn execute(&mut self, list: &DrawList) -> Result<(), UiError>

Replay an entire DrawList onto the backend’s surface.

fn surface_size(&self) -> Size

Return the target surface dimensions in physical pixels.

fn supports_blur(&self) -> bool

Return true if this backend can render blur effects (e.g. box shadows).

fn supports_gradients(&self) -> bool

Return true if this backend can render gradient fills.

fn supports_paths(&self) -> bool

Return true if this backend can render arbitrary vector paths.

fn supports_images(&self) -> bool

Return true if this backend can blit ImageData.

fn supports_text(&self) -> bool

Return true if this backend can render text via DrawCommand::DrawText.

fn supports_blend_modes(&self) -> bool

Return true if this backend honours DrawCommand::SetBlendMode commands (non-Normal blend modes).

fn supports_backdrop_blur(&self) -> bool

Return true if this backend can apply a backdrop blur via DrawCommand::BackdropBlur.