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metal: add support for render-only devices

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This commit is contained in:
Julian Orth 2026-03-14 14:05:46 +01:00
parent 17e434ba34
commit 3d60cfc5dc
3 changed files with 78 additions and 57 deletions
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94
src/backends/metal/video.rs
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@ -44,10 +44,10 @@ use {
INVALID_MODIFIER, Modifier,
dmabuf::DmaBufId,
drm::{
ConnectorStatus, ConnectorType, DRM_CLIENT_CAP_ATOMIC, DrmBlob, DrmConnector,
DrmCrtc, DrmEncoder, DrmError, DrmEvent, DrmFb, DrmLease, DrmMaster, DrmModeInfo,
DrmObject, DrmPlane, DrmProperty, DrmPropertyDefinition, DrmPropertyType,
DrmVersion, HDMI_EOTF_TRADITIONAL_GAMMA_SDR, drm_mode_modeinfo,
ConnectorStatus, ConnectorType, DRM_CLIENT_CAP_ATOMIC, DrmBlob, DrmCardResources,
DrmConnector, DrmCrtc, DrmEncoder, DrmError, DrmEvent, DrmFb, DrmLease, DrmMaster,
DrmModeInfo, DrmObject, DrmPlane, DrmProperty, DrmPropertyDefinition,
DrmPropertyType, DrmVersion, HDMI_EOTF_TRADITIONAL_GAMMA_SDR, drm_mode_modeinfo,
hdr_output_metadata,
},
gbm::GbmDevice,
@ -105,13 +105,10 @@ pub struct MetalDrmDevice {
pub devnum: c::dev_t,
pub devnode: CString,
pub master: Rc<DrmMaster>,
pub supports_kms: bool,
pub crtcs: AHashMap<DrmCrtc, Rc<MetalCrtc>>,
pub encoders: AHashMap<DrmEncoder, Rc<MetalEncoder>>,
pub planes: AHashMap<DrmPlane, Rc<MetalPlane>>,
pub _min_width: u32,
pub _max_width: u32,
pub _min_height: u32,
pub _max_height: u32,
pub cursor_width: u64,
pub cursor_height: u64,
pub supports_async_commit: bool,
@ -1822,6 +1819,9 @@ impl MetalBackend {
}
fn handle_drm_change_(self: &Rc<Self>, dev: &Rc<MetalDrmDeviceData>) -> Result<(), MetalError> {
if !dev.dev.supports_kms {
return Ok(());
}
if let Err(e) = self.update_device_properties(dev) {
return Err(MetalError::UpdateProperties(e));
}
@ -1982,46 +1982,44 @@ impl MetalBackend {
pending: PendingDrmDevice,
master: &Rc<DrmMaster>,
) -> Result<Rc<MetalDrmDeviceData>, MetalError> {
if let Err(e) = master.set_client_cap(DRM_CLIENT_CAP_ATOMIC, 2) {
return Err(MetalError::AtomicModesetting(e));
}
let resources = master.get_resources()?;
let (cursor_width, cursor_height) = match master.get_cursor_size() {
Ok(s) => s,
Err(e) => {
let mut resources = DrmCardResources::default();
let mut planes = AHashMap::new();
let mut crtcs = AHashMap::new();
let mut encoders = AHashMap::new();
let (mut cursor_width, mut cursor_height) = (1, 1);
let supports_kms = master.supports_get_resources()?;
if supports_kms {
if let Err(e) = master.set_client_cap(DRM_CLIENT_CAP_ATOMIC, 2) {
return Err(MetalError::AtomicModesetting(e));
}
resources = master.get_resources()?;
(cursor_width, cursor_height) = master.get_cursor_size().unwrap_or_else(|e| {
log::warn!("Can't determine size of cursor planes: {}", ErrorFmt(e));
(64, 64)
}
};
let mut planes = AHashMap::new();
for plane in master.get_planes()? {
match create_plane(plane, master) {
Ok(p) => {
planes.insert(p.id, Rc::new(p));
});
for plane in master.get_planes()? {
match create_plane(plane, master) {
Ok(p) => {
planes.insert(p.id, Rc::new(p));
}
Err(e) => return Err(MetalError::CreatePlane(e)),
}
Err(e) => return Err(MetalError::CreatePlane(e)),
}
}
let mut crtcs = AHashMap::new();
for (idx, crtc) in resources.crtcs.iter().copied().enumerate() {
match create_crtc(crtc, idx, master, &planes) {
Ok(c) => {
crtcs.insert(c.id, Rc::new(c));
for (idx, crtc) in resources.crtcs.iter().copied().enumerate() {
match create_crtc(crtc, idx, master, &planes) {
Ok(c) => {
crtcs.insert(c.id, Rc::new(c));
}
Err(e) => return Err(MetalError::CreateCrtc(e)),
}
Err(e) => return Err(MetalError::CreateCrtc(e)),
}
}
let mut encoders = AHashMap::new();
for encoder in resources.encoders {
match create_encoder(encoder, master, &crtcs) {
Ok(e) => {
encoders.insert(e.id, Rc::new(e));
for encoder in resources.encoders {
match create_encoder(encoder, master, &crtcs) {
Ok(e) => {
encoders.insert(e.id, Rc::new(e));
}
Err(e) => return Err(MetalError::CreateEncoder(e)),
}
Err(e) => return Err(MetalError::CreateEncoder(e)),
}
}
@ -2072,13 +2070,10 @@ impl MetalBackend {
devnum: pending.devnum,
devnode: pending.devnode,
master: master.clone(),
supports_kms,
crtcs,
encoders,
planes,
_min_width: resources.min_width,
_max_width: resources.max_width,
_min_height: resources.min_height,
_max_height: resources.max_height,
cursor_width,
cursor_height,
supports_async_commit: master.supports_async_commit(),
@ -2099,7 +2094,11 @@ impl MetalBackend {
min_post_commit_margin: Cell::new(DEFAULT_POST_COMMIT_MARGIN),
});
let (connectors, futures) = get_connectors(self, &dev, &resources.connectors)?;
let mut connectors = CopyHashMap::new();
let mut futures = CopyHashMap::new();
if supports_kms {
(connectors, futures) = get_connectors(self, &dev, &resources.connectors)?;
}
let slf = Rc::new(MetalDrmDeviceData {
dev: dev.clone(),
@ -2574,6 +2573,9 @@ impl MetalBackend {
fn init_drm_device(&self, dev: &Rc<MetalDrmDeviceData>) -> Result<(), MetalError> {
self.break_leases(dev);
if dev.connectors.is_empty() {
return Ok(());
}
enum Quirks {
DirectScanout,
NonDefaultFormat,