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# Changelog for Monado {#CHANGELOG}
```txt
SPDX-License-Identifier: CC0-1.0
SPDX-FileCopyrightText: 2020 Collabora, Ltd. and the Monado contributors
```
## Monado 21.0.0 (2021-01-28)
- Major changes
- Adds a initial SteamVR driver state tracker and target that produces a SteamVR
plugin that enables any Monado hardware driver to be used in SteamVR. This is
the initial upstreaming of this code and has some limitations, like only having
working input when emulating a Index controller.
([!583](https://gitlab.freedesktop.org/monado/monado/merge_requests/583))
- XRT Interface
- Add `xrt_binding_profile` struct, related pair structs and fields on
`xrt_device` to allow to move the static rebinding of inputs and outputs into
device drivers. This makes it easier to get a overview in the driver itself
which bindings it can bind to.
([!587](https://gitlab.freedesktop.org/monado/monado/merge_requests/587))
- xrt: Generate bindings for Monado and SteamVR from json.
([!638](https://gitlab.freedesktop.org/monado/monado/merge_requests/638))
- xrt: Introduce `xrt_system_compositor`, it is basically a analogous to
`XrSystemID` but instead of being a fully fledged xrt_system this is only the
compositor part of it. Also fold the `prepare_session` function into the create
native compositor function to simplify the interface.
([!652](https://gitlab.freedesktop.org/monado/monado/merge_requests/652))
- Expose more information on the frameservers, like product, manufacturer and
serial.
([!665](https://gitlab.freedesktop.org/monado/monado/merge_requests/665))
- Add `XRT_FORMAT_BAYER_GR8` format.
([!665](https://gitlab.freedesktop.org/monado/monado/merge_requests/665))
- State Trackers
- st/oxr: Add OXR_FRAME_TIMING_SPEW for basic frame timing debug output.
([!591](https://gitlab.freedesktop.org/monado/monado/merge_requests/591))
- OpenXR: Make sure to restore old EGL display/context/drawables when creating a
client EGL compositor.
([!602](https://gitlab.freedesktop.org/monado/monado/merge_requests/602))
- GUI: Expand with support for controlling the remote driver hand tracking.
([!604](https://gitlab.freedesktop.org/monado/monado/merge_requests/604))
- st/oxr: Implement XR_KHR_vulkan_enable2
([!633](https://gitlab.freedesktop.org/monado/monado/merge_requests/633))
- st/oxr: Add OXR_TRACKING_ORIGIN_OFFSET_{X,Y,Z} env variables as a quick way to
tweak 6dof tracking origins.
([!634](https://gitlab.freedesktop.org/monado/monado/merge_requests/634))
- OpenXR: Be more relaxed with Quat validation, spec says within 1% of unit
length, normalize if not within float epsilon.
([!659](https://gitlab.freedesktop.org/monado/monado/merge_requests/659))
- Drivers
- North Star: Fix memory leak in math code.
([!564](https://gitlab.freedesktop.org/monado/monado/merge_requests/564))
- psvr: Rename some variables for better readability.
([!597](https://gitlab.freedesktop.org/monado/monado/merge_requests/597))
- openhmd: Fix viewport calculation of rotated displays.
([!600](https://gitlab.freedesktop.org/monado/monado/merge_requests/600))
- remote: Add support for simulated hand tracking, this is based on the curl
model
that is used by the Valve Index Controller.
([!604](https://gitlab.freedesktop.org/monado/monado/merge_requests/604))
- android: Acquire device display metrics from system.
([!611](https://gitlab.freedesktop.org/monado/monado/merge_requests/611))
- openhmd: Rotate DK2 display correctly.
([!628](https://gitlab.freedesktop.org/monado/monado/merge_requests/628))
- d/psmv: The motor on zcmv1 does not rumble at amplitudes < 0.25. Linear rescale
amplitude into [0.25, 1] range.
([!636](https://gitlab.freedesktop.org/monado/monado/merge_requests/636))
- v4l2: Expose more information through new fields in XRT interface.
([!665](https://gitlab.freedesktop.org/monado/monado/merge_requests/665))
- v4l2: Allocate more buffers when streaming data.
([!665](https://gitlab.freedesktop.org/monado/monado/merge_requests/665))
- IPC
- ipc: Port IPC to u_logging.
([!601](https://gitlab.freedesktop.org/monado/monado/merge_requests/601))
- ipc: Make OXR_DEBUG_GUI work with monado-service.
([!622](https://gitlab.freedesktop.org/monado/monado/merge_requests/622))
- Compositor
- comp: Add basic frame timing information to XRT_COMPOSITOR_LOG=trace.
([!591](https://gitlab.freedesktop.org/monado/monado/merge_requests/591))
- main: Refactor how the compositor interacts with targets, the goal is to enable
the compositor to render to destinations that isn't backed by a `VkSwapchain`.
Introduce `comp_target` and remove `comp_window`, also refactor `vk_swapchain`
to be a sub-class of `comp_target` named `comp_target_swapchain`, the window
backends now sub class `comp_target_swapchain`.
([!599](https://gitlab.freedesktop.org/monado/monado/merge_requests/599))
- Implement support for XR_KHR_composition_layer_equirect (equirect1).
([!620](https://gitlab.freedesktop.org/monado/monado/merge_requests/620),
[!624](https://gitlab.freedesktop.org/monado/monado/merge_requests/624))
- comp: Improve thread safety. Resolve issues in mutlithreading CTS.
([!645](https://gitlab.freedesktop.org/monado/monado/merge_requests/645))
- main: Lower priority on sRGB format. This works around a bug in the OpenXR CTS
and mirrors better what at least on other OpenXR runtime does.
([!671](https://gitlab.freedesktop.org/monado/monado/merge_requests/671))
- Helper Libraries
- os/time: Make timespec argument const.
([!597](https://gitlab.freedesktop.org/monado/monado/merge_requests/597))
- os/time: Add a Linux specific way to get the realtime clock (for RealSense).
([!597](https://gitlab.freedesktop.org/monado/monado/merge_requests/597))
- math: Make sure that we do not drop and positions in poses when the other pose
has a non-valid position.
([!603](https://gitlab.freedesktop.org/monado/monado/merge_requests/603))
- aux/vk: `vk_create_device` now takes in a list of Vulkan device extensions.
([!605](https://gitlab.freedesktop.org/monado/monado/merge_requests/605))
- Port everything to u_logging.
([!627](https://gitlab.freedesktop.org/monado/monado/merge_requests/627))
- u/hand_tracking: Tweak finger curl model making it easier to grip ingame
objects.
([!635](https://gitlab.freedesktop.org/monado/monado/merge_requests/635))
- math: Add math_quat_validate_within_1_percent function.
([!659](https://gitlab.freedesktop.org/monado/monado/merge_requests/659))
- u/sink: Add Bayer format converter.
([!665](https://gitlab.freedesktop.org/monado/monado/merge_requests/665))
- u/distortion: Improve both Vive and Index distortion by fixing polynomial math.
([!666](https://gitlab.freedesktop.org/monado/monado/merge_requests/666))
- u/distortion: Improve Index distortion and tidy code. While this touches the
Vive distortion code all Vive headsets seems to have the center set to the same
for each channel so doesn't help them. And Vive doesn't have the extra
coefficient that the Index does so no help there either.
([!667](https://gitlab.freedesktop.org/monado/monado/merge_requests/667))
- Misc. Features
- Work toward a Win32 port.
([!551](https://gitlab.freedesktop.org/monado/monado/merge_requests/551),
[!605](https://gitlab.freedesktop.org/monado/monado/merge_requests/605),
[!607](https://gitlab.freedesktop.org/monado/monado/merge_requests/607))
- Additional improvements to the Android port.
([!592](https://gitlab.freedesktop.org/monado/monado/merge_requests/592),
[!595](https://gitlab.freedesktop.org/monado/monado/merge_requests/595),
[#105](https://gitlab.freedesktop.org/monado/monado/issues/105))
- Misc. Fixes
- steamvr: Support HMDs with rotated displays
([!600](https://gitlab.freedesktop.org/monado/monado/merge_requests/600))
## Monado 0.4.1 (2020-11-04)
- State Trackers
- st/oxr: Fix for new conformance tests for xrWaitFrame, xrBeginFrame,
xrEndFrame call order. Also fix OpenXR state transition logic depending on a
synchronized frame loop.
([!589](https://gitlab.freedesktop.org/monado/monado/merge_requests/589),
[!590](https://gitlab.freedesktop.org/monado/monado/merge_requests/590))
## Monado 0.4.0 (2020-11-02)
- XRT Interface
- add `xrt_device_type` to `xrt_device` to differentiate handed controllers
from
controllers that can be held in either hand.
([!412](https://gitlab.freedesktop.org/monado/monado/merge_requests/412))
- Rename functions and types that assumed the native graphics buffer handle type
was an FD: in `auxiliary/vk/vk_helpers.{h,c}` `vk_create_image_from_fd` ->
`vk_create_image_from_native`, in the XRT headers `struct xrt_compositor_fd` ->
`xrt_compositor_native` (and method name changes from `xrt_comp_fd_...` ->
`xrt_comp_native_...`), `struct xrt_swapchain_fd` -> `struct
xrt_swapchain_native`, `struct xrt_image_fd` -> `struct xrt_image_native`, and
corresponding parameter/member/variable name changes (e.g. `struct
xrt_swapchain_fd *xscfd` becomes `struct xrt_swapchain_native *xscn`).
([!426](https://gitlab.freedesktop.org/monado/monado/merge_requests/426),
[!428](https://gitlab.freedesktop.org/monado/monado/merge_requests/428))
- Make some fields on `xrt_gl_swapchain` and `xrt_vk_swapchain` private moving
them into the client compositor code instead of exposing them.
([!444](https://gitlab.freedesktop.org/monado/monado/merge_requests/444))
- Make `xrt_compositor::create_swapchain` return xrt_result_t instead of the
swapchain, this makes the methods on `xrt_compositor` more uniform.
([!444](https://gitlab.freedesktop.org/monado/monado/merge_requests/444))
- Add the method `xrt_compositor::import_swapchain` allowing a state tracker to
create a swapchain from a set of pre-allocated images. Uses the same
`xrt_swapchain_create_info` as `xrt_compositor::create_swapchain`.
([!444](https://gitlab.freedesktop.org/monado/monado/merge_requests/444))
- Make `xrt_swapchain_create_flags` swapchain static image bit match OpenXR.
([!454](https://gitlab.freedesktop.org/monado/monado/merge_requests/454))
- Add `XRT_SWAPCHAIN_USAGE_INPUT_ATTACHMENT` flag to `xrt_swapchain_usage_bits`
so that a client can create a Vulkan swapchain that can be used as input
attachment.
([!459](https://gitlab.freedesktop.org/monado/monado/merge_requests/459))
- Remove the `flip_y` parameter to the creation of the native compositor, this
is
now a per layer thing.
([!461](https://gitlab.freedesktop.org/monado/monado/merge_requests/461))
- Add `xrt_compositor_info` struct that allows the compositor carry information
to about its capabilities and its recommended values. Not everything is hooked
up at the moment.
([!461](https://gitlab.freedesktop.org/monado/monado/merge_requests/461))
- Add defines for underlying handle types.
([!469](https://gitlab.freedesktop.org/monado/monado/merge_requests/469))
- Add a native handle type for graphics sync primitives (currently file
descriptors on all platforms).
([!469](https://gitlab.freedesktop.org/monado/monado/merge_requests/469))
- Add a whole bunch of structs and functions for all of the different layers
in
OpenXR. The depth layer information only applies to the stereo projection
so
make a special stereo projection with depth layer.
([!476](https://gitlab.freedesktop.org/monado/monado/merge_requests/476))
- Add `xrt_image_native_allocator` as a friend to the compositor interface. This
simple interface is intended to be used by the IPC interface to allocate
`xrt_image_native` on the client side and send those to the service.
([!478](https://gitlab.freedesktop.org/monado/monado/merge_requests/478))
- Re-arrange and document `xrt_image_native`, making the `size` field optional.
([!493](https://gitlab.freedesktop.org/monado/monado/merge_requests/493))
- Add const to all compositor arguments that are info structs, making the
interface safer and
more clear. Also add `max_layers` field to the
`xrt_compositor_info` struct.
([!501](https://gitlab.freedesktop.org/monado/monado/merge_requests/501))
- Add `xrt_space_graph` struct for calculating space relations. This struct and
accompanying makes it easier to reason about space relations than just
functions
operating directly on `xrt_space_relation`. The code base is changed
to use
these new functions.
([!519](https://gitlab.freedesktop.org/monado/monado/merge_requests/519))
- Remove the `linear_acceleration` and `angular_acceleration` fields from the
`xrt_space_relation` struct, these were not used in the codebase and are not
exposed in the OpenXR API. They can easily be added back should they be
required again by code or a future feature. Drivers are free to retain this
information internally, but no longer expose it.
([!519](https://gitlab.freedesktop.org/monado/monado/merge_requests/519))
- Remove the `out_timestamp` argument to the `xrt_device::get_tracked_pose`
function, it's not needed anymore and the devices can do prediction better
as
it knows more about its tracking system the the state tracker.
([!521](https://gitlab.freedesktop.org/monado/monado/merge_requests/521))
- Replace mesh generator with `compute_distortion` function on `xrt_device`. This
is used to both make it possible to use mesh shaders for devices and to provide
compatibility with SteamVR which requires a `compute_distortion` function as
well.
The compositor uses this function automatically to create a mesh and
uses mesh
distortion for all drivers. The function `compute_distortion` default
implementations for `none`, `panotools` and `vive` distortion models are
provided in util.
([!536](https://gitlab.freedesktop.org/monado/monado/merge_requests/536))
- Add a simple curl value based finger tracking model and use it for vive and
survive controllers.
([!555](https://gitlab.freedesktop.org/monado/monado/merge_requests/555))
- State Trackers
- OpenXR: Add support for attaching Quad layers to action sapces.
([!437](https://gitlab.freedesktop.org/monado/monado/merge_requests/437))
- OpenXR: Use initial head pose as origin for local space.
([!443](https://gitlab.freedesktop.org/monado/monado/merge_requests/443))
- OpenXR: Minor fixes for various bits of code: copy-typo in device assignment
code; better stub for the unimplemented function
`xrEnumerateBoundSourcesForAction`; better error message on internal error in
`xrGetCurrentInteractionProfile`.
([!448](https://gitlab.freedesktop.org/monado/monado/merge_requests/448))
- OpenXR: Make the `xrGetCurrentInteractionProfile` conformance tests pass,
needed
to implement better error checking as well as generating
`XrEventDataInteractionProfileChanged` events to the client.
([!448](https://gitlab.freedesktop.org/monado/monado/merge_requests/448))
- OpenXR: Centralize all sub-action path iteration in some x-macros.
([!449](https://gitlab.freedesktop.org/monado/monado/merge_requests/449),
[!456](https://gitlab.freedesktop.org/monado/monado/merge_requests/456))
- OpenXR: Improve the validation in the API function for
`xrGetInputSourceLocalizedName`.
([!451](https://gitlab.freedesktop.org/monado/monado/merge_requests/451))
- OpenXR: Implement the function `xrEnumerateBoundSourcesForAction`, currently we
only bind one input per top level user path and it's easy to track this.
([!451](https://gitlab.freedesktop.org/monado/monado/merge_requests/451))
- OpenXR: Properly handle more than one input source being bound to the same
action
according to the combination rules of the specification.
([!452](https://gitlab.freedesktop.org/monado/monado/merge_requests/452))
- OpenXR: Fix multiplicity of bounds paths per action - there's one per
input/output.
([!456](https://gitlab.freedesktop.org/monado/monado/merge_requests/456))
- OpenXR: Implement the MND_swapchain_usage_input_attachment_bit extension.
([!459](https://gitlab.freedesktop.org/monado/monado/merge_requests/459))
- OpenXR: Refactor the native compositor handling a bit, this creates the
compositor earlier then before. This allows us to get the viewport information
from it.
([!461](https://gitlab.freedesktop.org/monado/monado/merge_requests/461))
- OpenXR: Implement action set priorities and fix remaining action conformance
tests.
([!462](https://gitlab.freedesktop.org/monado/monado/merge_requests/462))
- st/oxr: Fix crash when calling `xrPollEvents` when headless mode is selected.
([!475](https://gitlab.freedesktop.org/monado/monado/merge_requests/475))
- OpenXR: Add stub functions and support plumbing for a lot of layer extensions.
([!476](https://gitlab.freedesktop.org/monado/monado/merge_requests/476))
- OpenXR: Be sure to return `XR_ERROR_FEATURE_UNSUPPORTED` if the protected
content bit is set and the compositor does not support it.
([!481](https://gitlab.freedesktop.org/monado/monado/merge_requests/481))
- OpenXR: Update to 1.0.11 and start returning the new
`XR_ERROR_GRAPHICS_REQUIREMENTS_CALL_MISSING` code added in this release.
([!482](https://gitlab.freedesktop.org/monado/monado/merge_requests/482))
- OpenXR: Enable the `XR_KHR_android_create_instance` extension.
([!492](https://gitlab.freedesktop.org/monado/monado/merge_requests/492))
- OpenXR: Add support for creating swapchains with depth formats and submitting
depth layers. The depth layers are passed through to the compositor, but are
not used yet.
([!498](https://gitlab.freedesktop.org/monado/monado/merge_requests/498))
- OpenXR: For pose actions the any path (`XR_NULL_PATH`) needs to be special
cased, essentially turning into a separate action sub path, that is assigned
at
binding time.
([!510](https://gitlab.freedesktop.org/monado/monado/merge_requests/510))
- OpenXR: More correctly implement `xrGetInputSourceLocalizedName` allowing apps
to more accurently tell the user which input to use.
([!532](https://gitlab.freedesktop.org/monado/monado/merge_requests/532))
- OpenXR: Pass through equirect layer data to the compositor.
([!566](https://gitlab.freedesktop.org/monado/monado/merge_requests/566))
- Drivers
- psvr: We were sending in the wrong type of time to the 3DOF fusion code,
switch
to nanoseconds instead of fractions of seconds.
([!474](https://gitlab.freedesktop.org/monado/monado/merge_requests/474))
- rs: Make the pose getting from the T265 be threaded. Before we where getting
the
pose from the update input function, this would cause some the main thread
to
block and would therefore cause jitter in the rendering.
([!486](https://gitlab.freedesktop.org/monado/monado/merge_requests/486))
- survive: Add lighthouse tracking system type
hydra: Add lighthouse tracking
system type
([!489](https://gitlab.freedesktop.org/monado/monado/merge_requests/489))
- rs: Add slam tracking system type
northstar: Use tracking system from tracker
(e.g. rs) if available.
([!494](https://gitlab.freedesktop.org/monado/monado/merge_requests/494))
- psmv: Introduce proper grip and aim poses, correctly rotate the grip pose to
follow the spec more closely. The aim poses replaces the previous ball tip pose
that was used before for aim.
([!509](https://gitlab.freedesktop.org/monado/monado/merge_requests/509))
- survive: Implement haptic feedback.
([!557](https://gitlab.freedesktop.org/monado/monado/merge_requests/557))
- dummy: Tidy the code a bit and switch over to the new
logging API.
([!572](https://gitlab.freedesktop.org/monado/monado/merge_requests/572),
[!573](https://gitlab.freedesktop.org/monado/monado/merge_requests/573))
- psvr: Switch to the new logging API.
([!573](https://gitlab.freedesktop.org/monado/monado/merge_requests/573))
- Add initial "Cardboard" phone-holder driver for Android.
([!581](https://gitlab.freedesktop.org/monado/monado/merge_requests/581))
- IPC
- Generalize handling of native-platform handles in IPC code, allow bi-
directional handle transfer, and de-duplicate code between server and client.
([!413](https://gitlab.freedesktop.org/monado/monado/merge_requests/413),
[!427](https://gitlab.freedesktop.org/monado/monado/merge_requests/427))
- generation: Fix handling 'in_handle' by adding a extra sync round-trip, this
might be solvable by using `SOCK_SEQPACKET`.
([!444](https://gitlab.freedesktop.org/monado/monado/merge_requests/444))
- Implement the `xrt_compositor::import_swapchain` function, uses the earlier
`in_handle` work.
([!444](https://gitlab.freedesktop.org/monado/monado/merge_requests/444))
- proto: Transport the `xrt_compositor_info` over the wire so that the client can
get the needed information.
([!461](https://gitlab.freedesktop.org/monado/monado/merge_requests/461))
- client: Implement the usage of the `xrt_image_native_allocator`, currently not
used. But it is needed for platforms where for various reasons the allocation
must happen on the client side.
([!478](https://gitlab.freedesktop.org/monado/monado/merge_requests/478))
- client: Add a "loopback" image allocator, this code allocates a swapchain from
the service then imports that back to the service as if it was imported. This
tests both the import code and the image allocator code.
([!478](https://gitlab.freedesktop.org/monado/monado/merge_requests/478))
- ipc: Allow sending zero handles as a reply, at least the Linux fd handling code
allows this.
([!491](https://gitlab.freedesktop.org/monado/monado/merge_requests/491))
- Use a native AHardwareBuffer allocator on the client side when building for
recent-enough Android.
([!493](https://gitlab.freedesktop.org/monado/monado/merge_requests/493))
- ipc: Add functionality to disable a device input via the `monado-ctl` utility,
this allows us to pass the conformance tests that requires the runtime to turn
off a device.
([!511](https://gitlab.freedesktop.org/monado/monado/merge_requests/511))
- Compositor
- compositor: Add support for alpha blending with premultiplied alpha.
([!425](https://gitlab.freedesktop.org/monado/monado/merge_requests/425))
- compositor: Implement subimage rectangle rendering for quad layers.
([!433](https://gitlab.freedesktop.org/monado/monado/merge_requests/433))
- compositor: Enable subimage rectangle rendering for projection layers.
([!436](https://gitlab.freedesktop.org/monado/monado/merge_requests/436))
- compositor: Fix printing of current connected displays on nvidia when no
whitelisted display is found.
([!477](https://gitlab.freedesktop.org/monado/monado/merge_requests/477))
- compositor: Add env var to temporarily add display string to nvidia whitelist.
([!477](https://gitlab.freedesktop.org/monado/monado/merge_requests/477))
- compositor and clients: Use a generic typedef to represent the platform-
specific graphics buffer, allowing use of `AHardwareBuffer` on recent Android.
([!479](https://gitlab.freedesktop.org/monado/monado/merge_requests/479))
- compositor: Check the protected content bit, and return a non-success code if
it's set. Supporting this is optional in OpenXR, but lack of support must be
reported to the application.
([!481](https://gitlab.freedesktop.org/monado/monado/merge_requests/481))
- compositor: Implement cylinder layers.
([!495](https://gitlab.freedesktop.org/monado/monado/merge_requests/495))
- main: Set the maximum layers supported to 16, we technically support more than
16, but things get out of hand if multiple clients are running and all are
using
max layers.
([!501](https://gitlab.freedesktop.org/monado/monado/merge_requests/501))
- main: Add code to check that a format is supported by the GPU before exposing.
([!502](https://gitlab.freedesktop.org/monado/monado/merge_requests/502))
- compositor: Remove panotools and vive shaders from compositor.
([!538](https://gitlab.freedesktop.org/monado/monado/merge_requests/538))
- Initial work on a port of the compositor to Android.
([!547](https://gitlab.freedesktop.org/monado/monado/merge_requests/547))
- render: Implement equirect layer rendering.
([!566](https://gitlab.freedesktop.org/monado/monado/merge_requests/566))
- main: Fix leaks of sampler objects that was introduced in !566.
([!571](https://gitlab.freedesktop.org/monado/monado/merge_requests/571))
- Helper Libraries
- u/vk: Remove unused vk_image struct, this is later recreated for the image
allocator code.
([!444](https://gitlab.freedesktop.org/monado/monado/merge_requests/444))
- u/vk: Add a new image allocate helper, this is used by the main compositor to
create, export and import swapchain images.
([!444](https://gitlab.freedesktop.org/monado/monado/merge_requests/444))
- u/vk: Rename `vk_create_semaphore_from_fd` to `vk_create_semaphore_from_native`
([!469](https://gitlab.freedesktop.org/monado/monado/merge_requests/469))
- aux/android: New Android utility library added.
([!493](https://gitlab.freedesktop.org/monado/monado/merge_requests/493),
[!547](https://gitlab.freedesktop.org/monado/monado/merge_requests/547),
[!581](https://gitlab.freedesktop.org/monado/monado/merge_requests/581))
- aux/ogl: Add a function to compute the texture target and binding enum for a
given swapchain image creation info.
([!493](https://gitlab.freedesktop.org/monado/monado/merge_requests/493))
- util: Tidy hand tracking header.
([!574](https://gitlab.freedesktop.org/monado/monado/merge_requests/574))
- math: Fix doxygen warnings in vector headers.
([!574](https://gitlab.freedesktop.org/monado/monado/merge_requests/574))
- Misc. Features
- Support building in-process Monado with meson.
([!421](https://gitlab.freedesktop.org/monado/monado/merge_requests/421))
- Allow building some components without Vulkan. Vulkan is still required for the
compositor and therefore the OpenXR runtime target.
([!429](https://gitlab.freedesktop.org/monado/monado/merge_requests/429))
- Add an OpenXR Android target: an APK which provides an "About" activity and
eventually, an OpenXR runtime.
([!574](https://gitlab.freedesktop.org/monado/monado/merge_requests/574),
[!581](https://gitlab.freedesktop.org/monado/monado/merge_requests/581))
- Misc. Fixes
- No significant changes
## Monado 0.3.0 (2020-07-10)
- Major changes
- Centralise the logging functionality in Monado to a single util helper.
Previously most of our logging was done via fprints and gated behind booleans,
now there are common functions to call and a predefined set of levels.
([!408](https://gitlab.freedesktop.org/monado/monado/merge_requests/408),
[!409](https://gitlab.freedesktop.org/monado/monado/merge_requests/409))
- XRT Interface
- compositor: Remove the `array_size` field from the struct, this was the only
state tracker supplied value that was on the struct, only have values that the
compositor decides over on the struct.
([!359](https://gitlab.freedesktop.org/monado/monado/merge_requests/359))
- Improve Doxygen documentation of interfaces. Now the inheritance structure and
implementation of interfaces is shown in the docs, and helper functions that
call through function pointers are listed as "member functions", to help
developers understand the internal structure of Monado better.
([!365](https://gitlab.freedesktop.org/monado/monado/merge_requests/365),
[!367](https://gitlab.freedesktop.org/monado/monado/merge_requests/367))
- xrt: Add xrt_result_t return type to many compositor functions that previously
had no way to indicate failure.
([!369](https://gitlab.freedesktop.org/monado/monado/merge_requests/369))
- compositor: Introduce `xrt_swapchain_create_info` simplifying the argument
passing between various layers of the compositor stack and also simplify future
refactoring projects.
([!407](https://gitlab.freedesktop.org/monado/monado/merge_requests/407))
- State Trackers
- OpenXR: Update headers to 1.0.9.
([!358](https://gitlab.freedesktop.org/monado/monado/merge_requests/358))
- OpenXR: Verify that the XrViewConfigurationType is supported by the system as
required by the OpenXR spec in xrEnumerateEnvironmentBlendModes.
([!359](https://gitlab.freedesktop.org/monado/monado/merge_requests/359))
- OpenXR: Return the correct error code when verifying the sub action, if it is
a
valid sub action path but not given at action creation we should return
`XR_ERROR_PATH_UNSUPPORTED`.
([!359](https://gitlab.freedesktop.org/monado/monado/merge_requests/359))
- OpenXR: Validate the subImage data for both projection and quad layers layers,
refactor code out so it can be shared with the different types of layers. Need
to track some state on the `oxr_swapchain` in order to do the checking.
([!359](https://gitlab.freedesktop.org/monado/monado/merge_requests/359))
- OpenXR: Correct the return error code for action and action set localized name
validation.
([!359](https://gitlab.freedesktop.org/monado/monado/merge_requests/359))
- OpenXR: Correct the error messages on sub action paths errors.
([!359](https://gitlab.freedesktop.org/monado/monado/merge_requests/359))
- OpenXR: Track the name and localized name for both actions and action sets,
that
way we can make sure that there are no duplicates. This is required by the
spec. ([!359](https://gitlab.freedesktop.org/monado/monado/merge_requests/359))
- OpenXR: Do better checking if action sets and actions have been attached to the
session or not.
([!359](https://gitlab.freedesktop.org/monado/monado/merge_requests/359))
- OpenXR: Validate the arguments for `xrSuggestInteractionProfileBindings` better
so that it follows the spec better.
([!359](https://gitlab.freedesktop.org/monado/monado/merge_requests/359))
- OpenXR: Rework the logging formatting of error messages, this makes it easier
to
read for the application developer.
([!359](https://gitlab.freedesktop.org/monado/monado/merge_requests/359))
- OpenXR: Correctly ensure that the application has called the required get
graphics requirements function when creating a session.
([!359](https://gitlab.freedesktop.org/monado/monado/merge_requests/359))
- OpenXR: When a `XrSession` is destroyed purge the event queue of any events
that
references to it so that no events gets delivered to the applications with
stales handles.
([!359](https://gitlab.freedesktop.org/monado/monado/merge_requests/359))
- OpenXR: Make the event queue thread safe, all done with a simple mutex that is
not held for long at all.
([!359](https://gitlab.freedesktop.org/monado/monado/merge_requests/359))
- OpenXR: A major overhaul of the swapchain acquire, wait and release code. This
makes it almost completely conformant with the spec. Tricky parts include that
multiple images can be acquired, but only one can be waited on before being
released.
([!359](https://gitlab.freedesktop.org/monado/monado/merge_requests/359))
- OpenXR: Enforce that static swapchains can only be acquired once, this is
required by the spec and make sure that a image is only rendered to once, and
allows the runtime to perform special optimizations on the image.
([!359](https://gitlab.freedesktop.org/monado/monado/merge_requests/359))
- OpenXR: Make the function `xrGetReferenceSpaceBoundsRect` at least conform to
the spec without actually implementing it, currently we do not track bounds in
Monado.
([!359](https://gitlab.freedesktop.org/monado/monado/merge_requests/359))
- OpenXR: Make the session state changes obey the specification. The code is
fairly hair as is and should be improved at a later time.
([!359](https://gitlab.freedesktop.org/monado/monado/merge_requests/359))
- OpenXR: Use the correct XrPath for `/user/gamepad` while it sits in the users
hand itsn't `/user/hand/gamepad` as previously believed.
([!359](https://gitlab.freedesktop.org/monado/monado/merge_requests/359))
- OpenXR: Where used make sure we verify the view configuration type is a valid
enum value, the code is setup so that we in the future can support new values
via extensions easily.
([!368](https://gitlab.freedesktop.org/monado/monado/merge_requests/368))
- OpenXR: More correctly verify the interactive profile binding data, including
the given interactive profile is correct and the binding point is valid.
([!377](https://gitlab.freedesktop.org/monado/monado/merge_requests/377))
- OpenXR: Transform input types in a somewhat flexible, composable way. Also, do
conversion at sync time, and use the transformed values to evaluate if the
input has changed, per the spec.
([!379](https://gitlab.freedesktop.org/monado/monado/merge_requests/379))
- OpenXR: Tidy the extensions generated by the script and order them according
to
extension prefix, starting with KHR, EXT, Vendor, KHRX, EXTX, VendorX. Also
rename the `MND_ball_on_stick_controller` to `MNDX_ball_on_a_stick_controller`.
([!410](https://gitlab.freedesktop.org/monado/monado/merge_requests/410))
- OpenXR: Fix overly attached action sets, which would appear to be attached to
a
session even after the session has been destroyed. Also tidy up comments and
other logic surrounding this.
([!411](https://gitlab.freedesktop.org/monado/monado/merge_requests/411))
- Drivers
- psvr: Normalize the rotation to not trip up the client app when it gives the
rotation back to `st/oxr` again.
([!359](https://gitlab.freedesktop.org/monado/monado/merge_requests/359))
- vive: Create vive_config module to isolate config code and avoid duplication
between controller and headset code.
vive: Probe for controllers in vive_proper
interface.
vive: Fix a bug where using the Vive Pro crashed Monado.
vive: Fix a
bug where the controller didn't parse JSON vectors correctly.
vive: Move
missing functions to and use u_json.
([!405](https://gitlab.freedesktop.org/monado/monado/merge_requests/405))
- vive: Add support for Gen1 and Gen2 Vive Trackers.
([!406](https://gitlab.freedesktop.org/monado/monado/merge_requests/406))
- vive: Port to new u_logging API.
([!417](https://gitlab.freedesktop.org/monado/monado/merge_requests/417))
- comp: Set a compositor window title.
([!418](https://gitlab.freedesktop.org/monado/monado/merge_requests/418))
- IPC
- server: Almost completely overhaul the handling of swapchain lifecycle
including: correctly track which swapchains are alive; reuse ids; enforce the
maximum number of swapchains; and destroy underlying swapchains when they are
destroyed by the client.
([!359](https://gitlab.freedesktop.org/monado/monado/merge_requests/359))
- util: Make sure to not dereference NULL control messages, say in the case of the
server failing to create a swapchain. Also add a whole bunch of paranoia when
it comes to the alignment of the control message buffers.
([!359](https://gitlab.freedesktop.org/monado/monado/merge_requests/359))
- ipc: Return XR_ERROR_INSTANCE_LOST on IPC errors.
([!369](https://gitlab.freedesktop.org/monado/monado/merge_requests/369))
- Compositor
- main: Include `<math.h>` in layers renderer for missing `tanf` function.
([!358](https://gitlab.freedesktop.org/monado/monado/merge_requests/358))
- swapchain: Give out the oldset image index when a image is acquired. This logic
can be made better, but will work for the good case.
([!359](https://gitlab.freedesktop.org/monado/monado/merge_requests/359))
- swapchain: Close any FDs that are still valid, for instance the ipc server
copies the FDs to the client.
([!359](https://gitlab.freedesktop.org/monado/monado/merge_requests/359))
- client: When we give a image fd to the either OpenGL or Vulkan it is consumed
and cannot be reused. So make sure that it is set to an invalid fd value on the
`xrt_image_fd` on the owning `xrt_swapchain_fd`.
([!359](https://gitlab.freedesktop.org/monado/monado/merge_requests/359))
- main: We were alpha blending all layers previously, but now we support the
layer flag that OpenXR gives us. We do this by using different `VkImageView`s
with different component swizzles.
([!394](https://gitlab.freedesktop.org/monado/monado/merge_requests/394))
- layer_rendering: Use the visibility flags on quad to correctly show the layers
in each eye.
([!394](https://gitlab.freedesktop.org/monado/monado/merge_requests/394))
- Helper Libraries
- os/threading: Include `xrt_compiler.h` to fix missing stdint types.
([!358](https://gitlab.freedesktop.org/monado/monado/merge_requests/358))
- util: Add a very simple fifo for indices, this is used to keep track of
swapchain in order of age (oldness).
([!359](https://gitlab.freedesktop.org/monado/monado/merge_requests/359))
- util: Expand `u_hashset` to be able to automatically allocate a `u_hashet_item`
and insert it.
([!359](https://gitlab.freedesktop.org/monado/monado/merge_requests/359))
- Misc. Features
- build: Allow enabling inter-procedural optimization in CMake GUIs, if supported
by platform and compiler.
([!330](https://gitlab.freedesktop.org/monado/monado/merge_requests/330))
- Misc. Fixes
- No significant changes
## Monado 0.2 (2020-05-29)
- Major changes
- Add support for a new service process. This process houses the hardware drivers
and compositor. In order to do this, a whole new subsection of Monado called
ipc
was added. It lives in `src/xrt/ipc` and sits between the state trackers
and
the service hosting the drivers and compositor.
([!295](https://gitlab.freedesktop.org/monado/monado/merge_requests/295))
- Support optional systemd socket-activation: if not disabled at configure time,
`monado-service` can be launched by systemd as a service with an associated
socket. If the service is launched this way, it will use the systemd-created
domain socket instead of creating its own. (If launched manually, it will still
create its own as normal.) This allows optional auto-launching of the service
when running a client (OpenXR) application. Associated systemd unit files are
also included.
([!306](https://gitlab.freedesktop.org/monado/monado/merge_requests/306))
- XRT Interface
- Add a new settings interface for transporting camera settings, in
`xrt/xrt_settings.h`.
([!266](https://gitlab.freedesktop.org/monado/monado/merge_requests/266))
- Make it possible to send JSON object to drivers when probing for devices.
([!266](https://gitlab.freedesktop.org/monado/monado/merge_requests/266))
- Added new `xrt_instance` object to be root object, a singleton that allows us
to
better swap out the whole stack underneath the state trackers. This is now
implemented by the `xrt_prober` code and used by the OpenXR state tracker.
([!274](https://gitlab.freedesktop.org/monado/monado/merge_requests/274))
- Remove the `struct timestate` argument from the `struct xrt_device` interface.
It should be easy to write a driver and the state tracker should be the one
that tracks this state. It was mostly triggered by the out of process
compositor work.
([!280](https://gitlab.freedesktop.org/monado/monado/merge_requests/280))
- Add the new format `XRT_FORMAT_UYVY422` to the interface and various parts of
the code where it is needed to be supported, like the conversion functions and
calibration code. Also rename the `XRT_FORMAT_YUV422` to `XRT_FORMAT_YUYV422`.
([!283](https://gitlab.freedesktop.org/monado/monado/merge_requests/283))
- Expose manufacturer and serial number in the prober interface, right now only
for the video device probing. But this is the only thing that really requires
this in order to tell different cameras apart.
([!286](https://gitlab.freedesktop.org/monado/monado/merge_requests/286))
- Add `XRT_CAST_PTR_TO_OXR_HANDLE` and `XRT_CAST_OXR_HANDLE_TO_PTR` macros to
perform warning-free conversion between pointers and OpenXR handles, even on
32-bit platforms. They should be used instead of raw casts.
([!294](https://gitlab.freedesktop.org/monado/monado/merge_requests/294))
- Remove declaration and implementations of `xrt_prober_create`: the minimal
functionality previously performed there should now be moved to
`xrt_instance_create`.
([!347](https://gitlab.freedesktop.org/monado/monado/merge_requests/347))
- State Trackers
- gui: Fix compilation issue in `st/gui` when building without OpenCV.
([#63](https://gitlab.freedesktop.org/monado/monado/issues/63),
[!256](https://gitlab.freedesktop.org/monado/monado/merge_requests/256))
- OpenXR: Don't return struct with invalid type from
`xrEnumerateViewConfigurationViews`.
([!234](https://gitlab.freedesktop.org/monado/monado/merge_requests/234))
- prober: Print more information from the prober when spewing.
([!261](https://gitlab.freedesktop.org/monado/monado/merge_requests/261))
- gui: Save camera and calibration data using new settings structs and format.
([!266](https://gitlab.freedesktop.org/monado/monado/merge_requests/266))
- prober: Load tracking config from json and use new settings struct.
([!266](https://gitlab.freedesktop.org/monado/monado/merge_requests/266))
- gui: Fix name not being shown when video device does not have any modes.
([!269](https://gitlab.freedesktop.org/monado/monado/merge_requests/269))
- gui: Remove old video test scene, never used and seemed to be broken.
([!275](https://gitlab.freedesktop.org/monado/monado/merge_requests/275))
- gui: Fix build when OpenCV is not available or disabled.
([!292](https://gitlab.freedesktop.org/monado/monado/merge_requests/292))
- OpenXR: Fix build when OpenGL is not enabled.
([!292](https://gitlab.freedesktop.org/monado/monado/merge_requests/292))
- OpenXR: Validate that we support the given `XR_ENVIRONMENT_BLEND_MODE` as
according to the OpenXR spec. And better print the error messages.
([!345](https://gitlab.freedesktop.org/monado/monado/merge_requests/345))
- OpenXR: Validate given `displayTime` in `xrEndFrame` as required by the spec.
([!345](https://gitlab.freedesktop.org/monado/monado/merge_requests/345))
- OpenXR: Validate internal state that we get from the compositor.
([!345](https://gitlab.freedesktop.org/monado/monado/merge_requests/345))
- OpenXR: Validate time better in xrConvertTimeToTimespecTimeKHR and add better
error print.
([!348](https://gitlab.freedesktop.org/monado/monado/merge_requests/348))
- OpenXR: Correctly translate the `XrSwapchainCreateFlags` flags to xrt ones.
([!349](https://gitlab.freedesktop.org/monado/monado/merge_requests/349))
- OpenXR: In order to be able to correctly validate `XrPath` ids turn them
into a atom and keep all created paths in a array.
([!349](https://gitlab.freedesktop.org/monado/monado/merge_requests/349))
- OpenXR: Give better error messages on invalid poses in quad layers instead of
using the simple macro.
([!350](https://gitlab.freedesktop.org/monado/monado/merge_requests/350))
- OpenXR: Validate poses for project layer views, using the same expressive error
messages as the quad layers.
([!350](https://gitlab.freedesktop.org/monado/monado/merge_requests/350))
- OpenXR: Translate the swapchain usage bits from OpenXR enums to Monado's
internal enums.
([!350](https://gitlab.freedesktop.org/monado/monado/merge_requests/350))
- OpenXR: Report a spec following amount of maximum layers supported.
([!354](https://gitlab.freedesktop.org/monado/monado/merge_requests/354))
- OpenXR: Correctly reject invalid times given to `xrLocateSpace`.
([!354](https://gitlab.freedesktop.org/monado/monado/merge_requests/354))
- OpenXR: Correctly handle the space relation flag bits, some old hacked up code
left over since Monado's first days have been removed.
([!356](https://gitlab.freedesktop.org/monado/monado/merge_requests/356))
- Drivers
- dd: Add a driver for the Google Daydream View controller.
([!242](https://gitlab.freedesktop.org/monado/monado/merge_requests/242))
- all: Use new pre-filter and 3-DoF filter in drivers.
([!249](https://gitlab.freedesktop.org/monado/monado/merge_requests/249))
- arduino: Added a Arduino based flexible input device driver, along with
Arduino C++ code for it.
([!251](https://gitlab.freedesktop.org/monado/monado/merge_requests/251))
- psmv: Use all 6 measurements to compute acceleration bias, and port to new
IMU prefilter.
([!255](https://gitlab.freedesktop.org/monado/monado/merge_requests/255))
- v4l2: Add special tweaks for the ELP camera.
([!266](https://gitlab.freedesktop.org/monado/monado/merge_requests/266))
- vive: Add basic 3DOF driver for Vive Wand Controller with full input support
and
Valve Index Controller with partial input support.
([!281](https://gitlab.freedesktop.org/monado/monado/merge_requests/281))
- psvr: Use a better 3dof fusion for the PSVR when no tracking is available.
([!282](https://gitlab.freedesktop.org/monado/monado/merge_requests/282))
- psvm: Move the led and rumble updating from the application facing
update_inputs
function to the internal thread instead.
([!287](https://gitlab.freedesktop.org/monado/monado/merge_requests/287))
- psmv: Fix failure to build from source on PPC.
([!288](https://gitlab.freedesktop.org/monado/monado/merge_requests/288),
[#69](https://gitlab.freedesktop.org/monado/monado/issues/69))
- Compositor
- main: Fix XCB memory leaks and correctly use XCB/Xlib interop.
([!257](https://gitlab.freedesktop.org/monado/monado/merge_requests/257))
- main: Shorten Vulkan initializers.
([!259](https://gitlab.freedesktop.org/monado/monado/merge_requests/259))
- main: Port XCB and direct mode back ends to plain C.
([!262](https://gitlab.freedesktop.org/monado/monado/merge_requests/262))
- main: Add support for Vive Pro, Valve Index, Oculus DK1, DK2 and CV1 to NVIDIA
direct mode.
([!263](https://gitlab.freedesktop.org/monado/monado/merge_requests/263))
- client: Make sure that the number of images is decided by the fd compositor.
([!270](https://gitlab.freedesktop.org/monado/monado/merge_requests/270))
- main: Split RandR and NVIDIA direct mode window back ends.
([!271](https://gitlab.freedesktop.org/monado/monado/merge_requests/271))
- main: Improve synchronization and remove redundant vkDeviceWaitIdle calls.
([!277](https://gitlab.freedesktop.org/monado/monado/merge_requests/277))
- main: Delay the destruction of swapchains until a time where it is safe, this
allows swapchains to be destroyed from other threads.
([!278](https://gitlab.freedesktop.org/monado/monado/merge_requests/278))
- client: Propegate the supported formats from the real compositor to the client
ones. ([!282](https://gitlab.freedesktop.org/monado/monado/merge_requests/282))
- renderer: Change the idle images colour from bright white to grey.
([!282](https://gitlab.freedesktop.org/monado/monado/merge_requests/282))
- main: Add support for multiple projection layers.
([!340](https://gitlab.freedesktop.org/monado/monado/merge_requests/340))
- main: Implement quad layers.
([!340](https://gitlab.freedesktop.org/monado/monado/merge_requests/340))
- main: Only allocate one image for static swapchains.
([!349](https://gitlab.freedesktop.org/monado/monado/merge_requests/349))
- Helper Libraries
- tracking: Add image undistort/normalize cache mechanism, to avoid needing to
remap every frame.
([!255](https://gitlab.freedesktop.org/monado/monado/merge_requests/255))
- tracking: Improve readability and documentation of IMU fusion class.
([!255](https://gitlab.freedesktop.org/monado/monado/merge_requests/255))
- u/file: Add file helpers to load files from config directory.
([!266](https://gitlab.freedesktop.org/monado/monado/merge_requests/266))
- u/json: Add bool getter function.
([!266](https://gitlab.freedesktop.org/monado/monado/merge_requests/266))
- tracking: Expose save function with non-hardcoded path for calibration data.
([!266](https://gitlab.freedesktop.org/monado/monado/merge_requests/266))
- tracking: Remove all path hardcoded calibration data loading and saving
functions.
([!266](https://gitlab.freedesktop.org/monado/monado/merge_requests/266))
- threading: New helper functions and structs for doing threaded work, these are
on a higher level then the one in os wrappers.
([!278](https://gitlab.freedesktop.org/monado/monado/merge_requests/278))
- threading: Fix missing `#``pragma once` in `os/os_threading.h`.
([!282](https://gitlab.freedesktop.org/monado/monado/merge_requests/282))
- u/time: Temporarily disable the time skew in time state and used fixed offset
instead to fix various time issues in `st/oxr`. Will be fixed properly later.
([!348](https://gitlab.freedesktop.org/monado/monado/merge_requests/348))
- math: Correctly validate quaternion using non-squared "length" instead of
squared "length", certain combinations of elements would produce valid regular
"length" but not valid squared ones.
([!350](https://gitlab.freedesktop.org/monado/monado/merge_requests/350))
- Misc. Features
- build: Refactor CMake build system to make static (not object) libraries and
explicitly describe dependencies.
([!233](https://gitlab.freedesktop.org/monado/monado/merge_requests/233),
[!237](https://gitlab.freedesktop.org/monado/monado/merge_requests/237),
[!238](https://gitlab.freedesktop.org/monado/monado/merge_requests/238),
[!240](https://gitlab.freedesktop.org/monado/monado/merge_requests/240))
- os/ble: Add utility functionality for accessing Bluetooth Low-Energy (Bluetooth
LE or BLE) over D-Bus, in `os/os_ble.h` and `os/os_ble_dbus.c`.
([!242](https://gitlab.freedesktop.org/monado/monado/merge_requests/242))
- util: Add some bit manipulation helper functions in `util/u_bitwise.c` and
`util/u_bitwise.c`.
([!242](https://gitlab.freedesktop.org/monado/monado/merge_requests/242))
- tracking: Make stereo_camera_calibration reference counted, and have the
prober,
not the calibration, call the save function.
([!245](https://gitlab.freedesktop.org/monado/monado/merge_requests/245))
- math: Expand algebraic math functions in `math/m_api.h`, `math/m_vec3.h` and
`math/m_base.cpp`.
([!249](https://gitlab.freedesktop.org/monado/monado/merge_requests/249))
- math: Add pre-filter and a simple understandable 3-DoF fusion filter.
([!249](https://gitlab.freedesktop.org/monado/monado/merge_requests/249))
- build: Enable the build system to install `monado-cli` and `monado-gui`.
([!252](https://gitlab.freedesktop.org/monado/monado/merge_requests/252))
- build: Unify inputs for generated files between CMake and Meson builds.
([!252](https://gitlab.freedesktop.org/monado/monado/merge_requests/252))
- build: Support building with system cJSON instead of bundled copy.
([!284](https://gitlab.freedesktop.org/monado/monado/merge_requests/284),
[#62](https://gitlab.freedesktop.org/monado/monado/issues/62))
- ci: Perform test builds using the Android NDK (for armeabi-v7a and armv8-a).
This is not a full Android port (missing a compositor, etc) but it ensures we
don't add more Android porting problems.
([!292](https://gitlab.freedesktop.org/monado/monado/merge_requests/292))
- Misc. Fixes
- os/ble: Check if `org.bluez` name is available before calling in
`os/os_ble_dbus.c`.
([#65](https://gitlab.freedesktop.org/monado/monado/issues/65),
[#64](https://gitlab.freedesktop.org/monado/monado/issues/64),
[!265](https://gitlab.freedesktop.org/monado/monado/merge_requests/265))
- README: Added information to the README containing OpenHMD version requirement
and information regarding the requirement of `GL_EXT_memory_object_fd` and
limitations on Monado's compositor.
([!4](https://gitlab.freedesktop.org/monado/monado/merge_requests/4))
- build: Fix build issues and build warnings when 32-bit.
([!230](https://gitlab.freedesktop.org/monado/monado/merge_requests/230))
- os/ble: Fix crash due to bad dbus path, triggered by bad return checking when
probing for BLE devices.
([!247](https://gitlab.freedesktop.org/monado/monado/merge_requests/247))
- d/dd: Use the correct time delta in DayDream driver.
([!249](https://gitlab.freedesktop.org/monado/monado/merge_requests/249))
- doc: Stop changelog snippets from showing up in 'Related Pages'
([!253](https://gitlab.freedesktop.org/monado/monado/merge_requests/253))
- build: Fix meson warnings, increase compiler warning level.
([!258](https://gitlab.freedesktop.org/monado/monado/merge_requests/258))
- os/ble: Fix leak in `os/os_ble_dbus.c` code when failing to find any device.
([!264](https://gitlab.freedesktop.org/monado/monado/merge_requests/264))
- os/ble: Make ble code check for some error returns in `os/os_ble_dbus.c`.
([!265](https://gitlab.freedesktop.org/monado/monado/merge_requests/265))
- u/hashset: Fix warnings in `util/u_hashset.h` after pedantic warnings were
enabled for C++.
([!268](https://gitlab.freedesktop.org/monado/monado/merge_requests/268))
- build: Fix failure to build from source on ppc64 and s390x.
([!284](https://gitlab.freedesktop.org/monado/monado/merge_requests/284))
- build: Mark OpenXR runtime target in CMake as a MODULE library, instead of a
SHARED library.
([!284](https://gitlab.freedesktop.org/monado/monado/merge_requests/284))
- windows: Way way back when Gallium was made `auxiliary` was named `aux` but
then
it was ported to Windows and it was renamed to `auxiliary` since Windows
is [allergic to filenames that match its device names](https://docs.microsoft.com/en-us/windows/win32/fileio/naming-a-file#naming-conventions)
(e.g., `AUX`, `CON`, `PRN`, etc.). Through the ages, this knowledge was lost
and so we find ourselves with the same problem. Although Monado inherited
the correct name, the same old mistake was made in docs.
([!314](https://gitlab.freedesktop.org/monado/monado/merge_requests/314))
- build: For CMake rename (nearly) all build options so they begin with `XRT_`
and match the defines used in the source. You will probably want to clear
your build directory and reconfigure from scratch.
([!327](https://gitlab.freedesktop.org/monado/monado/merge_requests/327))
- ipc: Correctly set the shared semaphore value when creating it, the wrong value
resulted in the client not blocking in `xrWaitFrame`.
([!348](https://gitlab.freedesktop.org/monado/monado/merge_requests/348))
- ipc: Previously some arguments where dropped at swapchain creation time,
correct pass them between the client and server.
([!349](https://gitlab.freedesktop.org/monado/monado/merge_requests/349))
## Monado 0.1.0 (2020-02-24)
Initial (non-release) tag to promote/support packaging.
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