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video: prefer non-nvidia devices when selecting render device

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This commit is contained in:
Julian Orth 2022-11-13 15:18:50 +01:00
parent 141997d9d6
commit 79ee6900fa
6 changed files with 107 additions and 11 deletions
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61
src/video/drm/sys.rs
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@ -8,7 +8,7 @@ use {
DrmBlob, DrmCardResources, DrmConnector, DrmConnectorInfo, DrmCrtc, DrmEncoder,
DrmEncoderInfo, DrmError, DrmFb, DrmModeInfo, DrmPlane, DrmPlaneInfo, DrmProperty,
DrmPropertyDefinition, DrmPropertyEnumValue, DrmPropertyType, DrmPropertyValue,
NodeType,
DrmVersion, NodeType,
},
},
ahash::AHashMap,
@ -18,7 +18,7 @@ use {
io::{BufRead, BufReader},
mem,
},
uapi::{c, OwnedFd, Pod, Ustring},
uapi::{c, pod_zeroed, OwnedFd, Pod, Ustring},
};
pub unsafe fn ioctl<T>(fd: c::c_int, request: c::c_ulong, t: &mut T) -> Result<c::c_int, OsError> {
@ -1075,3 +1075,60 @@ pub fn mode_getprobblob<T: Pod + ?Sized>(
}
Ok(res.length as _)
}
#[repr(C)]
struct drm_version {
version_major: c::c_int,
version_minor: c::c_int,
version_patchlevel: c::c_int,
name_len: usize, // actually __kernel_size_t but nobody cares about x32
name: *mut u8,
date_len: usize,
date: *mut u8,
desc_len: usize,
desc: *mut u8,
}
unsafe impl Pod for drm_version {}
const DRM_IOCTL_VERSION: u64 = drm_iowr::<drm_version>(0x00);
pub fn get_version(fd: c::c_int) -> Result<DrmVersion, OsError> {
let mut name = Vec::<u8>::new();
let mut date = Vec::<u8>::new();
let mut desc = Vec::<u8>::new();
let mut res: drm_version = pod_zeroed();
loop {
res.name_len = name.capacity();
res.name = name.as_mut_ptr();
res.date_len = date.capacity();
res.date = date.as_mut_ptr();
res.desc_len = desc.capacity();
res.desc = desc.as_mut_ptr();
unsafe {
ioctl(fd, DRM_IOCTL_VERSION, &mut res)?;
}
if res.name_len <= name.capacity()
&& res.date_len <= date.capacity()
&& res.desc_len <= desc.capacity()
{
break;
}
name.reserve_exact(res.name_len);
date.reserve_exact(res.date_len);
desc.reserve_exact(res.desc_len);
}
unsafe {
name.set_len(res.name_len);
date.set_len(res.date_len);
desc.set_len(res.desc_len);
}
Ok(DrmVersion {
version_major: res.version_major,
version_minor: res.version_minor,
version_patchlevel: res.version_patchlevel,
name: name.into(),
date: date.into(),
desc: desc.into(),
})
}