Commit Graph

412 Commits

Author SHA1 Message Date
Quantum
d82333519c [host] dxgi: use SDK versionhelpers.h to test for Windows version
Also, changed logic so that Windows versions before 8 is not treated as 10.
2021-07-20 11:34:57 +10:00
Quantum
5421bd8b1d [host] windows: declare Windows 10 support in manifest
This allows IsWindows10OrGreater from <versionhelpers.h> to work.
2021-07-20 11:34:57 +10:00
Quantum
f0c7e9bdfa [host] windows: declare high DPI support in manifest
This is the normal way of doing things, and it's easier and less sketchy
than GetProcAddress.
2021-07-20 11:34:45 +10:00
Quantum
0525515bee [host] cmake: use -march=x86-64-v2 when it becomes available
GCC 11 will support x86_64 micro-architecture feature levels.
What we really want to support is nehalem or newer, which is x86-64-v2,
and specifying this instead of nehalem means that we are not tuning for
nehalem specifically.
2021-07-20 11:33:23 +10:00
Quantum
f5ad14b109 [host] windows: directly link D3DKMTSetProcessSchedulingPriorityClass
This function is available since Windows Vista and can therefore be used
directly without going through GetProcAddress. Unfortunately, MinGW does
not have d3dkmthk.h, but we can declare the prototype ourselves and link
against gdi32.dll.
2021-07-20 11:32:41 +10:00
Quantum
323d321a77 [host] windows: correctly declare WINVER and _WIN32_WINNT
We wanted to target Windows Vista, which is 0x0600 not 0x6000.
0x6000 is in fact larger than Windows 10 which is 0x0a00.
2021-07-20 11:32:15 +10:00
Quantum
56833edae7 [host] delay: directly link against ntdll.dll
There is no need to LoadLibrary and GetProcAddress to get pointers to
NtDelayExecution or NtSetTimerResolution. These functions don't have
prototypes in any SDK header, but they are exported in ntdll.dll and
we can simply declare the prototype and link ntdll.

There is also no chance that the functions do not exist: I checked an
old install of Windows NT 4.0 and both of these functions exist.

Also used NtSetTimerResolution instead of ZeSetTimerResolution for
consistency (they are the same).

Also changed system timer resolution log message units to μs with
one decimal digit for readability. This is the actual amount of
precision available to us.
2021-07-20 11:30:12 +10:00
Quantum
d57b5a320e [host] service: fix adjustPriv return value
When OpenProcessToken fails, the function returned -1, which would be true
when converted to bool. This is wrong, and it should be returning false.
2021-07-20 11:29:32 +10:00
Quantum
b4dc021381 [host] service: pass CREATE_UNICODE_ENVIRONMENT unconditionally
According to MSDN documentation for CreateEnvironmentBlock, "[i]f the
environment block is passed to CreateProcessAsUser, you must also
specify the CREATE_UNICODE_ENVIRONMENT flag."

Also pass DETACHED_PROCESS because the host is a GUI application and
doesn't use the console.
2021-07-20 11:27:16 +10:00
Quantum
ebda52b18b [host] service: use SYSTEM token attached to the current process
Since with the service, we are already running as SYSTEM, we don't need
to use dupeSystemProcessToken to get the token for SYSTEM. This removes
the need for having SeDebugPrivilege, SeTcbPrivilege, and
SeAssignPrimaryTokenPrivilege, or otherwise doing sketchy things.

Furthermore, we now only open the token with the privileges we actually
need.
2021-07-20 11:27:03 +10:00
Quantum
16ee1a825c [host] windows: use event to gracefully signal exit
This allows the process to be terminated without resorting to
TerminateProcess. With some fixes, this allows the notification icon to be
removed when the service is restarted.

Furthermore, instead of sending WM_DESTROY to fool the window into believing
it's being destroyed, we actually call DestroyWindow now.
2021-07-20 11:26:49 +10:00
arcnmx
a4f5ce08b9 [host] link resource directly to exe 2021-07-20 11:25:55 +10:00
arcnmx
aa41e4d2ce Revert "Revert "[host] avoid manual windres command""
This reverts commit cd10e02862.
2021-07-20 11:25:55 +10:00
Quantum
9ab85fd0b8 [host] capture: stop sending DPI information
The client doesn't need DPI information anymore, so there is no point
fetching it.
2021-07-18 10:50:57 +10:00
Tudor Brindus
92706caddc [common]: move array length into a common helper
Since it is more generally useful, and less cryptic this way.
2021-07-18 10:41:50 +10:00
Quantum
893b2500c2 [host] nvfbc: copy damaged areas only
This commit tracks the damage made to the framebuffer and only updates those
areas. Damage is tracked directly with NvFBC provided diffmaps.
2021-07-18 10:41:50 +10:00
Quantum
9ce4990793 [host] capture: pass frameIndex to capture backends
This allows capture backends to track damage made to each frame.
2021-07-18 10:41:50 +10:00
Tudor Brindus
f274bec8fc [host] dxgi: compute damage rectangles from moved rectangles
This is untested in that I don't have a Windows 8 VM where move rects
are supplied, but seems sound.
2021-07-18 10:41:50 +10:00
Quantum
e42747f4e3 [host] nvfbc: better algorithm for merging adjacent regions
Use a proper disjoint-set to give a more accurate result.
2021-07-18 10:41:50 +10:00
Quantum
5ed3301cf5 [host] nvfbc: merge adjacent changed regions
For adjacent changed regions, we actually use the bounding box for the
entire polygon. This may result in more area being damaged than strictly
necessary, but is nevertheless desirable since it reduces the number of
rectangles.
2021-07-18 10:41:50 +10:00
Quantum
6b16bb3ea1 [host] nvfbc: populate damage rectangles 2021-07-18 10:41:50 +10:00
Tudor Brindus
d7f9afb3ba [host] dxgi: populate damage rectangles
Co-Authored-By: Quantum <quantum2048@gmail.com>
2021-07-18 10:41:50 +10:00
Quantum
80ab4b5393 [host] capture: add damage rectangles to capture interface 2021-07-18 10:41:50 +10:00
Geoffrey McRae
7decb58bf7 [host] windows: fix build on Linux due to case sensitive filenames 2021-07-17 15:05:32 +10:00
Geoffrey McRae
d1ec19b30b [host] windows: fix delayExecution order of magnitude bug 2021-07-17 15:02:58 +10:00
Geoffrey McRae
74468cf799 [host] windows: remove accidental addition of some junk 2021-07-17 15:02:36 +10:00
Geoffrey McRae
411a6b1e49 [host] windows: add delayExecution function for more accurate sleeps
This change not only exposes and allows use of NtDelayExecution, but
also moves the code to set the system timer resolution.
2021-07-17 14:55:22 +10:00
Geoffrey McRae
e228165ff9 [host] windows: fix system timer resolution message units
ZwSetTimerResolution works in units of 100ns
2021-07-17 14:31:31 +10:00
Geoffrey McRae
d615514799 [host] windows: do not callback from the mouse hook context
The windows hook WH_MOUSE_LL is called in such a way that any delay in
processing causes a system wide stall. This change spawns an extra
thread which waits on an event set by the hook which is then used to
call the callback with an artifical limit of 1000Hz.
2021-07-17 14:03:52 +10:00
Geoffrey McRae
789ee70674 [host] dxgi: print out the adapter details earlier
Before we try and perhaps fail to init DXGI, we should print out what
the device is so that when there is an error report we can immediately
see if the user has the QXL device attached still.
2021-07-12 19:28:13 +10:00
Geoffrey McRae
3c0616bab7 [host] dxgi: print out the output device name to aid with support 2021-07-12 19:03:02 +10:00
Geoffrey McRae
3ce3b573a3 [host] app: fix infinate loop introduced in the last commit 2021-07-12 17:35:16 +10:00
Geoffrey McRae
ce459c24ce [host] app: wait for space in the frame queue
We must always wait for space in the frame queue so that we do not
overwrite memory that is already queued and may be in use by a client.
2021-07-12 17:30:06 +10:00
Geoffrey McRae
7d0b9711bd [host] nvfbc: remove the frameEvent event and associated code
Now that the host application can run the capture interface in
synchronous mode, and NVFBC uses this mode there is no longer need for
the frameEvent.
2021-07-12 17:01:23 +10:00
Geoffrey McRae
e477663a7e [host] app: allow the capture interface to select async or sync mode
While it's correct for DXGI to use a asyncronous waitFrame model, other
capture interfaces such as NvFBC it is not correct. This change allows
the capture interface to specify which is more correct for it and moves
the waitFrame/post into the main thread if async is not desired.
2021-07-12 16:57:22 +10:00
Quantum
eb01efe0cb [host] nvfbc: do not crash when protected content is playing
We return a timeout, so that when protected content finishes playing, we
can immediately resume capture.
2021-07-11 17:54:23 +10:00
Geoffrey McRae
8db4b65dee [host] app: allocate LGMP memory for KVMFRCursor updates without shapes
This changes the host to use a seperate pool of LGMP memory for cursor
positionl updates without shape information helping to prevent
corruption of the shape entries if they are still pending. While this is
not a perfect solution it resolves the issue without making major
changes to LGMP during the RC phase we are currently in.
2021-07-11 12:52:18 +10:00
Quantum
501b270890 [host] nvfbc: optimize change detection loop
Before, we only break out of the current row when a change is detected,
and all subsequent rows are still scanned. Now we break out of the entire
loop. This should make change detection ever so slightly faster.
2021-07-11 10:15:12 +10:00
Quantum
fd8f8b2b28 [host] dxgi: correctly mention AcquireNextFrame in help text
Also fix some formatting issues.

Co-Authored-By: Tudor Brindus <me@tbrindus.ca>
2021-07-11 10:15:12 +10:00
Geoffrey McRae
78b8e2a73c [host] windows: make D3DKMTSetProcessSchedulingPriorityClass global
Testing shows that `D3DKMTSetProcessSchedulingPriorityClass` has a
positive performance impact for NvFBC as well as DXGI, as such always
try to boost the priority for the windows host.
2021-07-10 12:27:30 +10:00
Geoffrey McRae
041b95507d [host] windows/nvfbc/common: strip out broken "enhanced" event logic
This so called "enhanced" event logic is completely flawed and can never
work correctly, better to strip it out and put our faith in windows to
handle the events for us.

And yes, I am fully aware I wrote the utter trash in the first place :)
2021-07-09 10:22:03 +10:00
Geoffrey McRae
1effd5fddc [common] debug: add color support to debug messages
People often miss the warnings about invalid arguments in their command
line, this last minute patch attempts to address this by making
warnings, errors, fixme's and fatal errors stand out if stdout is a TTY.
2021-07-07 23:05:46 +10:00
Geoffrey McRae
ada6ada576 [host] app: always send the cursor position to the client
If the guest VM is not showing a cursor when it starts such as on the
Windows login screen, the client never gets the current position of the
cursor, which prevents the client from attempting to send mouse
movements. This change ensures the client gets the mouse location on
startup.
2021-07-06 09:53:42 +10:00
Geoffrey McRae
82e10c1b7e [host] app: fix inverted cursor shape logic
We should only advance the pointerIndex if the buffer was not swapped
out for storage. This is to ensure that we do not overwrite cursor
memory that the client(s) may still be using.
2021-07-04 19:45:10 +10:00
Geoffrey McRae
cd10e02862 Revert "[host] avoid manual windres command"
This reverts commit d82f2e510d.
While the proposed change is more correct, it breaks the generation of
the file due to failure to locate the resource files, such as
`resources/icon.ico`.
2021-07-04 19:30:06 +10:00
Geoffrey McRae
e9b009db9f [host] app: fix issue with wrong cursor shape being sent for new clients
When a new cursor shape is provided by the capture interface we need to
retain a copy of it incase a new client connects which will not yet have
the cursor shape. The logic here was flawed causing the wrong shape to
be sent to a new client in some instances.
2021-07-04 19:04:54 +10:00
arcnmx
d82f2e510d [host] avoid manual windres command 2021-07-03 04:28:28 +10:00
arcnmx
2386781d4f [host] install cmake target 2021-07-03 03:30:53 +10:00
Geoffrey McRae
2160dee23a [host] linux: implement new truncated frame support 2021-06-12 19:10:32 +10:00
Geoffrey McRae
d36c4f0e83 [host] kvmfr: allow the frame size to exceed the available memory
This change allows the host to still transmit a frame that is truncated
if the IVSHMEM size is too small to allow for a full frame.
2021-06-12 18:44:28 +10:00
Geoffrey McRae
f02d61d665 [host] dxgi: sleep until it's close to time to map
This change adds an average function to time how long it takes the GPU
to copy and map the texture, and then uses this average to sleep for 80%
of this average lowering CPU usage and potentially decreasing lock
contention.
2021-06-06 12:26:36 +10:00
Quantum
24d0aa0c18 [all] normalize copyright on all source files 2021-06-06 11:53:05 +10:00
Geoffrey McRae
fcf6abc7c6 [host] NvFBC/DXGI: make DXGI the default instead of the fallback
It has been detemined that a failure to init NvFBC causes a 20-30%
performance penalty on non NvFBC supported hardware (GeForce) when using
DXGI, as such reverse the order and default to using DXGI as our first
option.

If NvFBC is still desired, pr #500 added the option `app:capture` which
can be used to force NvFBC.
2021-06-06 06:14:24 +10:00
Geoffrey McRae
1d7eb50608 [host] cmake: force -O3 for release with debug builds 2021-06-06 02:25:48 +10:00
Geoffrey McRae
0d9b0bd367 [host] dxgi: increase maxTextures default to 4
Testing shows that at high frame rates the default of 3 is hampering
performance, increasing this to 4 yields a substantial performance
improvement.
2021-06-06 01:35:00 +10:00
Geoffrey McRae
87568f97eb [host] linux: add missing library to fix compilation 2021-06-04 12:44:21 +10:00
Geoffrey McRae
0b4e98881f [host] app: add os_showMessage for Linux
Linux doesn't have a generic way to show a dialog box, so we just use
DEBUG_INFO to print the message out to the console.
2021-06-04 12:39:11 +10:00
Geoffrey McRae
fb1b30b728 [host] app: calculate and report the required IVSHMEM size
One of the most common issues reported in the support channels is the
IVSHMEM size being too small. This change adds a calculation to
determine an optimal size and uses the new `os_showMessage` platform
method to display a message box to the user with the error.
2021-06-04 12:31:15 +10:00
Jonathan Rubenstein
5fb6c73263 [doc] host: Imported from host/README.md
Placed at bottom of Technical FAQ to hide it
host/README.md removed
2021-05-25 16:57:52 +10:00
Quantum
ec81a353c2 [host] nvfbc: fix null dereference in mouse hook handler
Since we now let the mouse hook linger until the process is killed, the
cursor event that the hook signals may now be null, as the capture could
have stopped. If the hook fires during this time, a crash occurs.
2021-04-29 11:53:19 +10:00
Quantum
6a1ec9420e [host] service: compare SIDs directly without string conversion
Instead of converting every SID to string with ConvertSidToStringSidA
and compare it with the magical SID string for local system with strcmp,
we could instead create the local system SID and compare directly with
EqualSid.
2021-04-29 11:52:23 +10:00
Quantum
93d97424df [host] service: disable handle inheritance when spawning host
We don't actually have any handles that should be inherited, so specifying
TRUE for bInheritHandles to CreateProcessAsUserA is pointless.

Furthermore, according to MSDN, "[y]ou cannot inherit handles across
sessions," and we are spawning the host in a different session, so this
is even more pointless.
2021-04-29 11:51:41 +10:00
Quantum
2afad4e1be [host] service: disable privileges as soon as they are not needed
It is usually considered good practice to enable elevated privileges
for the shortest duration possible.
2021-04-29 11:51:30 +10:00
Quantum
5bfb33c739 [host] windows: re-implement open log safely
Instead of doing ShellExecute from the service, we instead get the token
of the currently logged in user, and do CreateProcessAsUserA to run
notepad with that token. This should be safe.
2021-03-22 09:06:07 +11:00
Quantum
a089c4ea32 [host] service: introduce fatal errors for ivshmem failures
Also for failure to parse command line. For these errors, restarting
with exponential backoff will not help: no amount of restarting the
service could possibly make the ivshmem device exist or larger, so
we shouldn't try.
2021-03-22 08:54:58 +11:00
Quantum
c12c6ea3c7 [host] service: retry a few times when host fails to restart
Certain users of Radeon cards have observed that the host fails to start
at boot, with D3D11CreateDevice failing with HSTATUS 0x887a0004, which
translates to "The specified device interface or feature level is not
supported on this system."

This failure results in a LG_HOST_EXIT_FAILED exit code, which the service
does not attempt to restart. The user has to manually restart the service
for the host application to work.

These users reported that the host application started fine on
B2. This strongly suggests that the fix to enable capturing the login
screen made the host application start too early during the boot process,
and the graphics driver did not have time to initialize fully.

This PR allows the service to retry a few times on LG_HOST_EXIT_FAILED,
with exponential backoff, before giving up. This should cover this bug
and other similar bugs related to the early initialization which I do not
have logs for.
2021-03-22 08:54:58 +11:00
Quantum
a4290b290b [host] cmake: link correctly against libxcb-xfixes.so
We are using <xcb/xfixes.h>, so it makes sense to link against the
xcb library instead of libXfixes.so directly.
2021-03-15 12:12:48 +11:00
Quantum
f2c0b8c0b4 [host] allow user to select capture backend
This commit introduces a new option, app:capture, which can be set to
either DXGI or NvFBC to force the host application to use that backend.

This is very useful for testing DXGI on Quadro cards, which would default
to running with NvFBC.
2021-02-27 17:41:44 +11:00
Quantum
54da11a206 [host] free capture interface on exit
This is needed for proper cleanup.

Freeing the capture interface also avoids a crash when using the NvFBC
backend. This is because we moved the mouse hook removal to nvfbc_free.
If nvfbc_free is not called before we start freeing LGMP memory, the
mouse hook would end up writing the cursor position into an invalid
memory address, causing an access violation.
2021-02-27 17:38:12 +11:00
Quantum
8e98f863b6 [host] windows: detect whether screensaver is disabled in the guest
This will allow us to add an option to disable the screensaver on the client
when an application in the guest requests it. This behaviour may be useful
when the guest is doing media playback.
2021-02-21 10:31:48 +11:00
Quantum
ff0a859ceb [host] nvfbc: avoid recreating mouse hook and 1x1 window
The mouse hook code is very fragile, and we would like to avoid unhooking
and re-hooking as much as possible.

After this commit, this is done only once, and the hook and 1x1 window is
only destroyed upon exit. This, of course, comes with the downside of
the slight performance penalty if the guest machine is used directly while
the host is running and the client is not running.
2021-01-31 12:17:14 +11:00
Quantum
1b48ac842a [host] nvfbc: fix resource leak when pointer thread creation fails
Moving NvFBCToSysSetup to nvfbc_init means that when the pointer thread
fails to be created, NvFBCToSysRelease needs to be called.

To resolve such cleanup issues in the future, we instead call nvfbc_deinit,
which should cleanup everything that needs to be cleaned up. fails.
2021-01-31 11:21:24 +11:00
Quantum
a702c912ae [host] nvfbc: move NvFBCToSysCreate into nvfbc_init
When NvFBCToSysCapture reports recreation is required, we return
CAPTURE_RESULT_REINIT, which eventually calls nvfbc_deinit and then
nvfbc_init.

However, the NvFBC object is actually created in nvfbc_create, which
means the NvFBC object is never actually recreated. The result is an
endless cycle of NvFBC asking for recreation. This commonly manifests
as the client waiting endlessly for the host when the guest machine
reboots.

In this commit, the NvFBC object creation is moved into nvfbc_init,
and when recreation is required, it will actually be recreated.
2021-01-31 10:57:51 +11:00
Quantum
acc3298344 [host] nvfbc: cleanup threads created by nvfbc_init on failure
mouseHook_install and dwmForceComposition both create threads, but these
are only freed in nvfbc_deinit which is not called if nvfbc_init fails.
These should be freed if the pointer thread fails to be created, as
nothing else could be cleaning it up.
2021-01-31 09:57:07 +11:00
Quantum
0d28ea160e [host] update README.md to reflect new log paths 2021-01-29 15:56:01 +11:00
Quantum
c91b7f647d [host] installer: create start menu shortcut to log directory
This commit makes the installer create a shortcut to the log directory
introduced by the previous commit.
2021-01-29 15:56:01 +11:00
Quantum
1761ea2b9b [host] windows: move log path to %ProgramData%\Looking Glass (host)
Instead of using %windir%\Temp, which is not accessible by default and
contains a lot of unrelated files, as the location for our log files,
this commit moves it to %ProgramData%\Looking Glass (host), which will
be a dedicated directory just for the LG host log files. This applies
to both the host application logs and the service logs.

Also, we now switched to using PathCombineA from shlwapi.dll instead
of using snprintf, which greatly simplifies the code. PathCombineA
guarantees that the path would not overflow a buffer of MAX_PATH.
2021-01-29 15:56:01 +11:00
Quantum
fb916cbac1 [host] nvfbc: always update cursor shape on startup
This ensures that the top-left position of the cursor sprite is correctly
computed.
2021-01-28 11:18:02 +11:00
Quantum
b97130cf20 [host] nvfbc: generate cursor position update on startup
Before this commit, the NvFBC backend only generated the first cursor
position update when the mouse moves. Therefore, if the user does
not move the mouse, the cursor will be shown at (0, 0), which is not
ideal.

This commit changes this behaviour to unconditionally generate a
cursor update when the mouse hook initializes.
2021-01-28 11:18:02 +11:00
Geoffrey McRae
6b5842d2ff [host] cmake: use -march=nehalem by default
Nehalem is the minimum requirement for the host application as it makes
use of SSE4.1 instructions, as such we should default to compling with
it instead of `-march=native` so that when the binary is distributed it
will operate on foreign systems.

Fixed #416
2021-01-28 08:09:31 +11:00
Geoffrey McRae
1808adc2de [host] app: fix possible string overflow 2021-01-27 01:28:29 +11:00
Geoffrey McRae
e2e49bce13 [host] service: fix possible use of unitialized variable 2021-01-27 01:23:58 +11:00
Geoffrey McRae
0d7be70b56 [host] dxgi: fix maybe uninitialized warning 2021-01-27 01:21:06 +11:00
Geoffrey McRae
6b0699e664 [host] installer: include the debug PDB if it is available 2021-01-26 22:55:25 +11:00
Quantum
f9ec32b255 [host] service: disable buffering on the log file
Before this change, the log is buffered, so if the host application exits
for any reason, it usually would not show up in the log file immediately,
and the service has to be restarted for the logs to be flushed.

This commit disables the buffering so that any log entries shows up
immediately.
2021-01-25 09:35:03 +11:00
Quantum
d610aaf2cf [host] nvfbc: update cursor position on shape change
This is because we keep track of the top-left corner of the cursor, not
the location of the hotspot. When the cursor shape changes, the hotspot
location may also change. When it does, the position of the top-left
corner changes and requires an update.

In the case that we do not have the current cursor position, which
happens on startup, we do not generate this update.
2021-01-23 20:37:09 +11:00
Geoffrey McRae
04774d9cd6 [host] fix faults caused by improper startup/shudown/restart ordering 2021-01-21 17:05:30 +11:00
Geoffrey McRae
6b8161972d [host] nvfbc: prevent possible double free 2021-01-21 16:28:20 +11:00
Geoffrey McRae
9965a4a3a6 [host] app: prevent double call to stopThreads 2021-01-21 16:27:57 +11:00
Geoffrey McRae
98ea8b0bb8 [host] nvfbc: remove invalid close of the HMONITOR handle 2021-01-21 16:17:24 +11:00
Geoffrey McRae
8778827a42 [host] fix invalid LGMP free of cursor memory 2021-01-21 15:53:06 +11:00
Geoffrey McRae
536df254e0 [host] fix the return code for the platform specific init 2021-01-21 15:44:19 +11:00
Geoffrey McRae
ef4df571f0 [host] use posix compatible exit codes (signed char) 2021-01-21 15:24:02 +11:00
Geoffrey McRae
e926bad759 [host] dont overwrite the exit code on shutdown 2021-01-21 15:14:50 +11:00
Geoffrey McRae
ad9e84eaaa [host] return a proper exit code 2021-01-21 15:07:19 +11:00
Quantum
ffa72c7992 [host] nvfbc: force composition to capture some full screen apps
NvFBC is unable to capture certain applications that bypasses the DWM
compositor, for example, Firefox playing video in full screen. This
has been a known issue for a long time with Nvidia's ShadowPlay, see:
* https://www.nvidia.com/en-us/geforce/forums/geforce-experience/14/233709/
* https://crbug.com/609857

Nvidia won't fix this, but there are workarounds. For example, we
create a transparent 1x1 layered window, which forces desktop composition
to be enabled.

Note that SetLayeredWindowAttributes also supports alpha-based transparency,
but setting transparency to 0 will cause DWM to skip composition. We could
use a transparency of 1, but this ruins the image by the slightest bit,
which is unacceptable. Therefore, we must use chroma key-based
transparency, which tricks DWM into compositing despite being fully
transparent.
2021-01-21 12:14:03 +11:00
Geoffrey McRae
cac454d9cf [host] dxgi: reverse the rotation angle.
This is undocumented however testing yields that DXGI DD reports the
inverse rotation. Research shows that this is because of a difference in
coordiate spaces.

Ref: https://docs.microsoft.com/en-us/windows/uwp/gaming/supporting-screen-rotation-directx-and-cpp
2021-01-18 15:15:36 +11:00
Geoffrey McRae
14cc57071c [host] remove the remainder of the YUV420 support 2021-01-18 13:55:44 +11:00
Geoffrey McRae
f5587b6b6b [host] all: pass back the desktop rotation to the client 2021-01-18 13:53:29 +11:00
Quantum
95e1b48f83 [host] windows: make mousehook.c work on secure desktop
Basically, this creates a separate thread for the mouse events, and this
thread detects that the desktop has changed (say to the secure desktop),
and unhooks, switches to the new desktop, and then rehooks.

This allows the cursor location to be updated while using NvFBC on secure
desktop and the login screen.
2021-01-17 13:23:29 +11:00