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image-copy: Use damage_output() for additional damage

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The important change here is that we now apply the additional damage
first, instead of using `.extend()` to add it after other elements. This
is important since `OutputDamageTracker` will ignore our damage elements
if there are behind an element with an opaque region.

This also makes things a bit simpler, especially `take_screencopy_frames()`,
which no longer needs a mutable references to extend then truncate.

The implementation of `OutputDamageTracker` isn't entirely clear, but as
far as I can tell this is intended to work, and it seems to work in some
testing.
This commit is contained in:
Ian Douglas Scott 2025-09-17 11:06:02 -07:00 • committed by Victoria Brekenfeld
parent cac7a5aca6
commit 9bc1b6e1ee
4 changed files with 74 additions and 113 deletions
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26
src/backend/render/element.rs
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@ -32,7 +32,6 @@ where
Cursor(RescaleRenderElement<RelocateRenderElement<CursorRenderElement<R>>>),
Dnd(WaylandSurfaceRenderElement<R>),
MoveGrab(RescaleRenderElement<CosmicMappedRenderElement<R>>),
AdditionalDamage(DamageElement),
Postprocess(
CropRenderElement<RelocateRenderElement<RescaleRenderElement<TextureShaderElement>>>,
),
@ -53,7 +52,6 @@ where
CosmicElement::Cursor(elem) => elem.id(),
CosmicElement::Dnd(elem) => elem.id(),
CosmicElement::MoveGrab(elem) => elem.id(),
CosmicElement::AdditionalDamage(elem) => elem.id(),
CosmicElement::Postprocess(elem) => elem.id(),
CosmicElement::Zoom(elem) => elem.id(),
#[cfg(feature = "debug")]
@ -67,7 +65,6 @@ where
CosmicElement::Cursor(elem) => elem.current_commit(),
CosmicElement::Dnd(elem) => elem.current_commit(),
CosmicElement::MoveGrab(elem) => elem.current_commit(),
CosmicElement::AdditionalDamage(elem) => elem.current_commit(),
CosmicElement::Postprocess(elem) => elem.current_commit(),
CosmicElement::Zoom(elem) => elem.current_commit(),
#[cfg(feature = "debug")]
@ -81,7 +78,6 @@ where
CosmicElement::Cursor(elem) => elem.src(),
CosmicElement::Dnd(elem) => elem.src(),
CosmicElement::MoveGrab(elem) => elem.src(),
CosmicElement::AdditionalDamage(elem) => elem.src(),
CosmicElement::Postprocess(elem) => elem.src(),
CosmicElement::Zoom(elem) => elem.src(),
#[cfg(feature = "debug")]
@ -95,7 +91,6 @@ where
CosmicElement::Cursor(elem) => elem.geometry(scale),
CosmicElement::Dnd(elem) => elem.geometry(scale),
CosmicElement::MoveGrab(elem) => elem.geometry(scale),
CosmicElement::AdditionalDamage(elem) => elem.geometry(scale),
CosmicElement::Postprocess(elem) => elem.geometry(scale),
CosmicElement::Zoom(elem) => elem.geometry(scale),
#[cfg(feature = "debug")]
@ -109,7 +104,6 @@ where
CosmicElement::Cursor(elem) => elem.location(scale),
CosmicElement::Dnd(elem) => elem.location(scale),
CosmicElement::MoveGrab(elem) => elem.location(scale),
CosmicElement::AdditionalDamage(elem) => elem.location(scale),
CosmicElement::Postprocess(elem) => elem.location(scale),
CosmicElement::Zoom(elem) => elem.location(scale),
#[cfg(feature = "debug")]
@ -123,7 +117,6 @@ where
CosmicElement::Cursor(elem) => elem.transform(),
CosmicElement::Dnd(elem) => elem.transform(),
CosmicElement::MoveGrab(elem) => elem.transform(),
CosmicElement::AdditionalDamage(elem) => elem.transform(),
CosmicElement::Postprocess(elem) => elem.transform(),
CosmicElement::Zoom(elem) => elem.transform(),
#[cfg(feature = "debug")]
@ -141,7 +134,6 @@ where
CosmicElement::Cursor(elem) => elem.damage_since(scale, commit),
CosmicElement::Dnd(elem) => elem.damage_since(scale, commit),
CosmicElement::MoveGrab(elem) => elem.damage_since(scale, commit),
CosmicElement::AdditionalDamage(elem) => elem.damage_since(scale, commit),
CosmicElement::Postprocess(elem) => elem.damage_since(scale, commit),
CosmicElement::Zoom(elem) => elem.damage_since(scale, commit),
#[cfg(feature = "debug")]
@ -155,7 +147,6 @@ where
CosmicElement::Cursor(elem) => elem.opaque_regions(scale),
CosmicElement::Dnd(elem) => elem.opaque_regions(scale),
CosmicElement::MoveGrab(elem) => elem.opaque_regions(scale),
CosmicElement::AdditionalDamage(elem) => elem.opaque_regions(scale),
CosmicElement::Postprocess(elem) => elem.opaque_regions(scale),
CosmicElement::Zoom(elem) => elem.opaque_regions(scale),
#[cfg(feature = "debug")]
@ -169,7 +160,6 @@ where
CosmicElement::Cursor(elem) => elem.alpha(),
CosmicElement::Dnd(elem) => elem.alpha(),
CosmicElement::MoveGrab(elem) => elem.alpha(),
CosmicElement::AdditionalDamage(elem) => elem.alpha(),
CosmicElement::Postprocess(elem) => elem.alpha(),
CosmicElement::Zoom(elem) => elem.alpha(),
#[cfg(feature = "debug")]
@ -183,7 +173,6 @@ where
CosmicElement::Cursor(elem) => elem.kind(),
CosmicElement::Dnd(elem) => elem.kind(),
CosmicElement::MoveGrab(elem) => elem.kind(),
CosmicElement::AdditionalDamage(elem) => elem.kind(),
CosmicElement::Postprocess(elem) => elem.kind(),
CosmicElement::Zoom(elem) => elem.kind(),
#[cfg(feature = "debug")]
@ -212,9 +201,6 @@ where
CosmicElement::Cursor(elem) => elem.draw(frame, src, dst, damage, opaque_regions),
CosmicElement::Dnd(elem) => elem.draw(frame, src, dst, damage, opaque_regions),
CosmicElement::MoveGrab(elem) => elem.draw(frame, src, dst, damage, opaque_regions),
CosmicElement::AdditionalDamage(elem) => {
RenderElement::<R>::draw(elem, frame, src, dst, damage, opaque_regions)
}
CosmicElement::Postprocess(elem) => {
let glow_frame = R::glow_frame_mut(frame);
RenderElement::<GlowRenderer>::draw(
@ -250,7 +236,6 @@ where
CosmicElement::Cursor(elem) => elem.underlying_storage(renderer),
CosmicElement::Dnd(elem) => elem.underlying_storage(renderer),
CosmicElement::MoveGrab(elem) => elem.underlying_storage(renderer),
CosmicElement::AdditionalDamage(elem) => elem.underlying_storage(renderer),
CosmicElement::Postprocess(elem) => {
let glow_renderer = renderer.glow_renderer_mut();
elem.underlying_storage(glow_renderer)
@ -281,17 +266,6 @@ where
}
}
impl<R> From<DamageElement> for CosmicElement<R>
where
R: Renderer + ImportAll + ImportMem + AsGlowRenderer,
R::TextureId: 'static,
CosmicMappedRenderElement<R>: RenderElement<R>,
{
fn from(elem: DamageElement) -> Self {
Self::AdditionalDamage(elem)
}
}
impl<R> From<MemoryRenderBufferRenderElement<R>> for CosmicElement<R>
where
R: Renderer + ImportAll + ImportMem + AsGlowRenderer,