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use smithay::backend::allocator::dmabuf::Dmabuf;
use smithay::backend::renderer::element::texture::TextureRenderElement;
use smithay::backend::renderer::element::{Element, Id, Kind, RenderElement, UnderlyingStorage};
use smithay::backend::renderer::gles::{GlesError, GlesFrame, GlesRenderer, GlesTexture};
use smithay::backend::renderer::utils::CommitCounter;
use smithay::backend::renderer::{Bind, ExportMem, ImportAll, Offscreen, Renderer, Texture};
use smithay::utils::{Buffer, Physical, Rectangle, Scale, Transform};
use crate::backend::tty::{TtyFrame, TtyRenderer, TtyRendererError};
/// Trait with our main renderer requirements to save on the typing.
pub trait NiriRenderer:
ImportAll
+ ExportMem
+ Bind<Dmabuf>
+ Offscreen<GlesTexture>
+ Renderer<TextureId = Self::NiriTextureId, Error = Self::NiriError>
+ AsGlesRenderer
{
// Associated types to work around the instability of associated type bounds.
type NiriTextureId: Texture + Clone + 'static;
type NiriError: std::error::Error
+ Send
+ Sync
+ From<<GlesRenderer as Renderer>::Error>
+ 'static;
}
impl<R> NiriRenderer for R
where
R: ImportAll + ExportMem + Bind<Dmabuf> + Offscreen<GlesTexture> + AsGlesRenderer,
R::TextureId: Texture + Clone + 'static,
R::Error: std::error::Error + Send + Sync + From<<GlesRenderer as Renderer>::Error> + 'static,
{
type NiriTextureId = R::TextureId;
type NiriError = R::Error;
}
/// Trait for getting the underlying `GlesRenderer`.
pub trait AsGlesRenderer {
fn as_gles_renderer(&mut self) -> &mut GlesRenderer;
}
impl AsGlesRenderer for GlesRenderer {
fn as_gles_renderer(&mut self) -> &mut GlesRenderer {
self
}
}
impl<'render, 'alloc> AsGlesRenderer for TtyRenderer<'render, 'alloc> {
fn as_gles_renderer(&mut self) -> &mut GlesRenderer {
self.as_mut()
}
}
/// Trait for getting the underlying `GlesFrame`.
pub trait AsGlesFrame<'frame>
where
Self: 'frame,
{
fn as_gles_frame(&mut self) -> &mut GlesFrame<'frame>;
}
impl<'frame> AsGlesFrame<'frame> for GlesFrame<'frame> {
fn as_gles_frame(&mut self) -> &mut GlesFrame<'frame> {
self
}
}
impl<'render, 'alloc, 'frame> AsGlesFrame<'frame> for TtyFrame<'render, 'alloc, 'frame> {
fn as_gles_frame(&mut self) -> &mut GlesFrame<'frame> {
self.as_mut()
}
}
/// Wrapper for a texture from the primary GPU for rendering with the primary GPU.
#[derive(Debug)]
pub struct PrimaryGpuTextureRenderElement(pub TextureRenderElement<GlesTexture>);
impl Element for PrimaryGpuTextureRenderElement {
fn id(&self) -> &Id {
self.0.id()
}
fn current_commit(&self) -> CommitCounter {
self.0.current_commit()
}
fn geometry(&self, scale: Scale<f64>) -> Rectangle<i32, Physical> {
self.0.geometry(scale)
}
fn transform(&self) -> Transform {
self.0.transform()
}
fn src(&self) -> Rectangle<f64, Buffer> {
self.0.src()
}
fn damage_since(
&self,
scale: Scale<f64>,
commit: Option<CommitCounter>,
) -> Vec<Rectangle<i32, Physical>> {
self.0.damage_since(scale, commit)
}
fn opaque_regions(&self, scale: Scale<f64>) -> Vec<Rectangle<i32, Physical>> {
self.0.opaque_regions(scale)
}
fn alpha(&self) -> f32 {
self.0.alpha()
}
fn kind(&self) -> Kind {
self.0.kind()
}
}
impl RenderElement<GlesRenderer> for PrimaryGpuTextureRenderElement {
fn draw(
&self,
frame: &mut GlesFrame<'_>,
src: Rectangle<f64, Buffer>,
dst: Rectangle<i32, Physical>,
damage: &[Rectangle<i32, Physical>],
) -> Result<(), GlesError> {
let gles_frame = frame.as_gles_frame();
RenderElement::<GlesRenderer>::draw(&self.0, gles_frame, src, dst, damage)?;
Ok(())
}
fn underlying_storage(&self, _renderer: &mut GlesRenderer) -> Option<UnderlyingStorage> {
// If scanout for things other than Wayland buffers is implemented, this will need to take
// the target GPU into account.
None
}
}
impl<'render, 'alloc> RenderElement<TtyRenderer<'render, 'alloc>>
for PrimaryGpuTextureRenderElement
{
fn draw(
&self,
frame: &mut TtyFrame<'_, '_, '_>,
src: Rectangle<f64, Buffer>,
dst: Rectangle<i32, Physical>,
damage: &[Rectangle<i32, Physical>],
) -> Result<(), TtyRendererError<'render, 'alloc>> {
let gles_frame = frame.as_gles_frame();
RenderElement::<GlesRenderer>::draw(&self.0, gles_frame, src, dst, damage)?;
Ok(())
}
fn underlying_storage(
&self,
_renderer: &mut TtyRenderer<'render, 'alloc>,
) -> Option<UnderlyingStorage> {
// If scanout for things other than Wayland buffers is implemented, this will need to take
// the target GPU into account.
None
}
}
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