Blender Git Statistics -> Branches -> soc-2019-openxr

"Soc-2019-openxr" branch

Total commits : 114
Total committers : 2
First Commit : May 27, 2019
Latest Commit : July 16, 2019 (Yesterday)

Commits by Month

DateNumber of Commits
July, 201930
June, 201976
May, 20198


AuthorNumber of Commits
Julian Eisel113

Popular Files

FilenameTotal Edits

Latest commits Feed

5 hours 43 min ago
Add helper batch file for testing on oculus rift.
8 hours 36 min ago
Temporarily let DirectX take priority over OpenGL

OpenGL doesn't work yet. Shouldn't be too difficult to get working, but
I don't have a working OpenXR runtime with OpenGL support to test here.
9 hours 15 min ago
Merge branch 'master' into soc-2019-openxr
July 13, 2019, 14:22 (GMT)
Fix some issues, improve error message

* Destruct surface when destroying session on error. Fixes null pointer
dereference when trying to draw the surface on next redraw.
* Fix trying to enable same extensions/API-layers multiple times due to
static array usage not being cleared after error.
* Null pointer dereference with OpenGL drawing
July 12, 2019, 23:19 (GMT)
Fix crash on OpenXR error before context is created fully
July 12, 2019, 17:51 (GMT)
Show useful error reports in case of errors.

E.g. with an active OpenXR runtime installed, but no HMD plugged in,
Blender will now show: "Failed to get device information. Is a device
plugged in?".
In case of such errors, the VR-session will be cleanly exited, with
no side effects to the rest of Blender (at least if there are no bugs).

The GHOST_Xr API now allows setting a custom error handling callback
which may cleanly destroy all GHOST_Xr data.
July 12, 2019, 12:40 (GMT)
Safe and informative GHOST_Xr error handling

This wraps all functions that could fail into some proper (although
unfinished) error handling.

These were the requirements for the error handling strategy:
* If an error occurs, cleanly exit the VR session (or the context if the
error happend during its set up), causing no resource leaks or side
effects to the rest of Blender.
* Show a *useful* error message to the user.
* Don't impair readability of code too much with error handling.

After some back and forth I decided Ghost internal exceptions are the
best way to go about this. I get exceptions are a controversial feature,
IMHO that's because most people use them 'wrong' however. Here's the
* Most alternatives require early exiting functions. This early exiting
has to be 'bubbled up' the call stack to the point that performs error
handling. So the code gets really impaired by error checking. Tried
this first and wasn't happy with it at all. Even if error handling is
wrapped into macros.
* All GHOST_Xr resources are managed via RAII. So stack unwinding will
cause them to be released cleanly whenever an exception is thrown.
* GHOST_Xr has a clear boundary (the Ghost C-API) with only a handful of
public functions. That is the only place we need to have try-catch
blocks at.
(Generally, try-catch blocks at kinda random places are a bad code
smell IMHO. Module boundaries are a valid place to put them.)
* Exceptions allow us to pass multiple bits of error information through
mulitple layers of the call stack. This information can also be made
specific with a useful error message.
As of now, they conain a user error message, the OpenXR error code (if
any), as well as the exact source code location the error was caught

So if an error is caught inside GHOST_Xr code, an exception is thrown
with specific and hopefully useful information in it. In the Ghost C-API,
these exceptions are caught and passed on to a custom error handling
callback. This callback will be defined by the Blender window-manager
and output the error information via a usual user report popup (not done
yet). It can also ensure the entire session is shut down.

Note that the majority of errors OpenXR can return are for invalid API
usage. Assuming the API usage is valid though, most error messages
should never reach users and can be left a bit more vague. Maybe we can
add something like "This is probably a bug and should be reported" to
July 11, 2019, 19:05 (GMT)
Check runtime DirectX requirements for graphics binding too
July 11, 2019, 18:36 (GMT)
Check runtime OpenGL requirements prior to creating graphics binding

DirectX will need these checks too.
Also fix warnings due to wrong printf formatting.
July 11, 2019, 18:28 (GMT)
Merge branch 'master' into soc-2019-openxr
July 11, 2019, 14:44 (GMT)
Disable debug extension on Windows

Unfortunately, enabling XR_EXT_debug_utils crashes instance creation
with the Windows Mixed Reality runtime. Maybe I'm doing something wrong,
for now, just disable it.
July 11, 2019, 14:36 (GMT)
General minor fixes and cleanup

* Initialize all class member variables
* Add version to runtime name printing
* Separate functionality code from debug prints
* Improve code structure using Doxygen groups
* Make accessors const functions
* Add (Doxygen) comments
* Naming
* Reorder functions
July 10, 2019, 22:51 (GMT)
Fix wrong return value causing OpenXR initialization to fail
July 10, 2019, 22:50 (GMT)
Fix compile errors on windows and with bundled OpenXR SDK sources
July 10, 2019, 21:53 (GMT)
Refactor GHOST_XrContext into class + interface

Makes GHOST_Xr much more consistent with the rest of GHOST. Basically I
added a GHOST_IXrContext interface which can be called by the GHOST
C-API. The internal GHOST_XrContext class implements this.
Outside of GHOST only the opaque GHOST_XrContextHandle is accessible.

Kept GHOST_Xr_intern.h and GHOST_Xr.cpp for now. I'll probably remove
them soon. There's not much reason for both of them to be there.
July 10, 2019, 13:08 (GMT)
Use OpenXR extension for extra debug messages in debug mode

Enables (or tries to) the XR_EXT_debug_utils extension which allows
setting a custom callback for additional debug prints. Note that I
haven't been able to test this really, as the Monado runtime appears to
not have this fully implemented (had to force sending a custom message
to find that out...). Will test with the Windows MR runtime in a bit. We
can also improve message quality then (it can print the exact function
name the message was sent from, print additional custom labels which
could indicate session state, etc.).
July 10, 2019, 13:08 (GMT)
Only try to enable OpenXR API validation layer in debug mode
July 10, 2019, 13:06 (GMT)

Of course also renames XR_DEBUG_END accordingly.
July 9, 2019, 15:49 (GMT)
Only print info messages with --debug-xr enabled
July 9, 2019, 15:20 (GMT)
Add --debug-xr commandline arg and pass on to GHOST XR contexts

Doesn't do anything yet.

MiikaHweb - Blender Git Statistics v1.06
By: Miika HämäläinenLast update: Nov-07-2014 14:18 MiikaHweb | 2003-2019