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metal: scan out in more circumstances

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This commit is contained in:
Julian Orth 2024-02-23 14:59:42 +01:00
parent 9e3ad38948
commit 58cdfbcb26
10 changed files with 169 additions and 22 deletions
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146
src/backends/metal/video.rs
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@ -9,10 +9,14 @@ use {
drm_feedback::DrmFeedback,
edid::Descriptor,
format::{Format, ARGB8888, XRGB8888},
gfx_api::{BufferPoints, GfxApiOpt, GfxContext, GfxFramebuffer, GfxRenderPass, GfxTexture},
gfx_api::{
AbsoluteRect, BufferPoints, GfxApiOpt, GfxContext, GfxFramebuffer, GfxRenderPass,
GfxTexture,
},
ifs::wp_presentation_feedback::{KIND_HW_COMPLETION, KIND_VSYNC},
renderer::RenderResult,
state::State,
theme::Color,
tree::OutputNode,
udev::UdevDevice,
utils::{
@ -345,6 +349,17 @@ pub struct DirectScanoutData {
fb: Rc<DrmFramebuffer>,
dma_buf_id: DmaBufId,
acquired: Cell<bool>,
position: DirectScanoutPosition,
}
#[derive(Debug)]
pub struct DirectScanoutPosition {
pub src_width: i32,
pub src_height: i32,
pub crtc_x: i32,
pub crtc_y: i32,
pub crtc_width: i32,
pub crtc_height: i32,
}
impl Drop for DirectScanoutData {
@ -413,25 +428,96 @@ impl MetalConnector {
pass: &GfxRenderPass,
plane: &Rc<MetalPlane>,
) -> Option<DirectScanoutData> {
if pass.ops.len() != 1 {
return None;
}
let GfxApiOpt::CopyTexture(ct) = &pass.ops[0] else {
return None;
let plane_w = plane.mode_w.get();
let plane_h = plane.mode_h.get();
let ct = 'ct: {
let mut ops = pass.ops.iter().rev();
let ct = 'ct2: {
for opt in &mut ops {
match opt {
GfxApiOpt::Sync => {}
GfxApiOpt::FillRect(_) => {
// Top-most layer must be a texture.
return None;
}
GfxApiOpt::CopyTexture(ct) => break 'ct2 ct,
}
}
return None;
};
let plane_rect = AbsoluteRect {
x1: 0.0,
x2: plane_w as f32,
y1: 0.0,
y2: plane_h as f32,
};
if !ct.tex.format().has_alpha && ct.target == plane_rect {
// Texture covers the entire screen and is opaque.
break 'ct ct;
}
for opt in ops {
match opt {
GfxApiOpt::Sync => {}
GfxApiOpt::FillRect(fr) => {
if fr.color == Color::SOLID_BLACK {
// Black fills can be ignored because this is the CRTC background color.
if fr.rect == plane_rect {
// If fill covers the entire screen, we don't have to look further.
break 'ct ct;
}
} else {
// Fill could be visible.
return None;
}
}
GfxApiOpt::CopyTexture(_) => {
// Texture could be visible.
return None;
}
}
}
if let Some(clear) = pass.clear {
if clear != Color::SOLID_BLACK {
// Background could be visible.
return None;
}
}
ct
};
if ct.source != BufferPoints::identity() {
// Non-trivial transforms are not supported.
return None;
}
if ct.target.x1 != 0.0
|| ct.target.y1 != 0.0
|| ct.target.x2 != plane.mode_w.get() as f32
|| ct.target.y2 != plane.mode_h.get() as f32
if ct.target.x1 < 0.0
|| ct.target.y1 < 0.0
|| ct.target.x2 > plane_w as f32
|| ct.target.y2 > plane_h as f32
{
// Rendering outside the screen is not supported.
return None;
}
let (tex_w, tex_h) = ct.tex.size();
let (crtc_w, crtc_h) = (ct.target.x2 - ct.target.x1, ct.target.y2 - ct.target.y1);
if crtc_w < 0.0 || crtc_h < 0.0 {
// Flipping x or y axis is not supported.
return None;
}
if self.cursor_enabled.get() && (tex_w as f32, tex_h as f32) != (crtc_w, crtc_h) {
// If hardware cursors are used, we cannot scale the texture.
return None;
}
let Some(dmabuf) = ct.tex.dmabuf() else {
// Shm buffers cannot be scanned out.
return None;
};
let position = DirectScanoutPosition {
src_width: tex_w,
src_height: tex_h,
crtc_x: ct.target.x1 as _,
crtc_y: ct.target.y1 as _,
crtc_width: crtc_w as _,
crtc_height: crtc_h as _,
};
let mut cache = self.scanout_buffers.borrow_mut();
if let Some(buffer) = cache.get(&dmabuf.id) {
return buffer.fb.as_ref().map(|fb| DirectScanoutData {
@ -439,12 +525,14 @@ impl MetalConnector {
fb: fb.clone(),
dma_buf_id: dmabuf.id,
acquired: Default::default(),
position,
});
}
let format = 'format: {
if let Some(f) = plane.formats.get(&dmabuf.format.drm) {
break 'format f;
}
// Try opaque format if possible.
if let Some(opaque) = dmabuf.format.opaque {
if let Some(f) = plane.formats.get(&opaque.drm) {
break 'format f;
@ -461,6 +549,7 @@ impl MetalConnector {
fb: Rc::new(fb),
dma_buf_id: dmabuf.id,
acquired: Default::default(),
position,
}),
Err(e) => {
log::debug!(
@ -519,7 +608,14 @@ impl MetalConnector {
let mut direct_scanout_data = None;
if try_direct_scanout {
if let Some(dsd) = self.prepare_direct_scanout(&pass, plane) {
output.perform_screencopies(None, &dsd.tex, !render_hw_cursor);
output.perform_screencopies(
None,
&dsd.tex,
!render_hw_cursor,
dsd.position.crtc_x,
dsd.position.crtc_y,
Some((dsd.position.crtc_width, dsd.position.crtc_height)),
);
direct_scanout_data = Some(dsd);
}
}
@ -542,6 +638,9 @@ impl MetalConnector {
Some(&*buffer_fb),
&buffer.render_tex,
!render_hw_cursor,
0,
0,
None,
);
buffer.drm.clone()
}
@ -585,8 +684,33 @@ impl MetalConnector {
let fb =
self.prepare_present_fb(&mut rr, buffer, &plane, &node, try_direct_scanout);
rr.dispatch_frame_requests();
let (crtc_x, crtc_y, crtc_w, crtc_h, src_width, src_height) =
match &fb.direct_scanout_data {
None => {
let plane_w = plane.mode_w.get();
let plane_h = plane.mode_h.get();
(0, 0, plane_w, plane_h, plane_w, plane_h)
}
Some(dsd) => {
let p = &dsd.position;
(
p.crtc_x,
p.crtc_y,
p.crtc_width,
p.crtc_height,
p.src_width,
p.src_height,
)
}
};
changes.change_object(plane.id, |c| {
c.change(plane.fb_id, fb.fb.id().0 as _);
c.change(plane.src_w.id, (src_width as u64) << 16);
c.change(plane.src_h.id, (src_height as u64) << 16);
c.change(plane.crtc_x.id, crtc_x as u64);
c.change(plane.crtc_y.id, crtc_y as u64);
c.change(plane.crtc_w.id, crtc_w as u64);
c.change(plane.crtc_h.id, crtc_h as u64);
});
new_fb = Some(fb);
}