diff options
author | Julian Eisel <julian@blender.org> | 2020-03-17 22:20:55 +0300 |
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committer | Julian Eisel <julian@blender.org> | 2020-03-17 23:42:44 +0300 |
commit | dc2df8307f41888bab722f75fa9e73adecf86b72 (patch) | |
tree | f83c54f43e27a07e9cb9fed306d79b08864f29f2 /source/blender/blenlib | |
parent | 406bfd43040a5526702b51f88f1491cb61aecedb (diff) |
VR: Initial Virtual Reality support - Milestone 1, Scene Inspection
NOTE: While most of the milestone 1 goals are there, a few smaller features and
improvements are still to be done.
Big picture of this milestone: Initial, OpenXR-based virtual reality support
for users and foundation for advanced use cases.
Maniphest Task: https://developer.blender.org/T71347
The tasks contains more information about this milestone.
To be clear: This is not a feature rich VR implementation, it's focused on the
initial scene inspection use case. We intentionally focused on that, further
features like controller support are part of the next milestone.
- How to use?
Instructions on how to use this are here:
https://wiki.blender.org/wiki/User:Severin/GSoC-2019/How_to_Test
These will be updated and moved to a more official place (likely the manual) soon.
Currently Windows Mixed Reality and Oculus devices are usable. Valve/HTC
headsets don't support the OpenXR standard yet and hence, do not work with this
implementation.
---------------
This is the C-side implementation of the features added for initial VR
support as per milestone 1. A "VR Scene Inspection" Add-on will be
committed separately, to expose the VR functionality in the UI. It also
adds some further features for milestone 1, namely a landmarking system
(stored view locations in the VR space)
Main additions/features:
* Support for rendering viewports to an HMD, with good performance.
* Option to sync the VR view perspective with a fully interactive,
regular 3D View (VR-Mirror).
* Option to disable positional tracking. Keeps the current position (calculated
based on the VR eye center pose) when enabled while a VR session is running.
* Some regular viewport settings for the VR view
* RNA/Python-API to query and set VR session state information.
* WM-XR: Layer tying Ghost-XR to the Blender specific APIs/data
* wmSurface API: drawable, non-window container (manages Ghost-OpenGL and GPU
context)
* DNA/RNA for management of VR session settings
* `--debug-xr` and `--debug-xr-time` commandline options
* Utility batch & config file for using the Oculus runtime on Windows.
* Most VR data is runtime only. The exception is user settings which are saved
to files (`XrSessionSettings`).
* VR support can be disabled through the `WITH_XR_OPENXR` compiler flag.
For architecture and code documentation, see
https://wiki.blender.org/wiki/Source/Interface/XR.
---------------
A few thank you's:
* A huge shoutout to Ray Molenkamp for his help during the project - it would
have not been that successful without him!
* Sebastian Koenig and Simeon Conzendorf for testing and feedback!
* The reviewers, especially Brecht Van Lommel!
* Dalai Felinto for pushing and managing me to get this done ;)
* The OpenXR working group for providing an open standard. I think we're the
first bigger application to adopt OpenXR. Congratulations to them and
ourselves :)
This project started as a Google Summer of Code 2019 project - "Core Support of
Virtual Reality Headsets through OpenXR" (see
https://wiki.blender.org/wiki/User:Severin/GSoC-2019/).
Some further information, including ideas for further improvements can be found
in the final GSoC report:
https://wiki.blender.org/wiki/User:Severin/GSoC-2019/Final_Report
Differential Revisions: D6193, D7098
Reviewed by: Brecht Van Lommel, Jeroen Bakker
Diffstat (limited to 'source/blender/blenlib')
-rw-r--r-- | source/blender/blenlib/BLI_math_geom.h | 7 | ||||
-rw-r--r-- | source/blender/blenlib/intern/math_geom.c | 19 |
2 files changed, 26 insertions, 0 deletions
diff --git a/source/blender/blenlib/BLI_math_geom.h b/source/blender/blenlib/BLI_math_geom.h index 534c25f6e01..2049f368578 100644 --- a/source/blender/blenlib/BLI_math_geom.h +++ b/source/blender/blenlib/BLI_math_geom.h @@ -636,6 +636,13 @@ void perspective_m4(float mat[4][4], const float top, const float nearClip, const float farClip); +void perspective_m4_fov(float mat[4][4], + const float angle_left, + const float angle_right, + const float angle_up, + const float angle_down, + const float nearClip, + const float farClip); void orthographic_m4(float mat[4][4], const float left, const float right, diff --git a/source/blender/blenlib/intern/math_geom.c b/source/blender/blenlib/intern/math_geom.c index d54ec0f1ac1..fa50bf202a8 100644 --- a/source/blender/blenlib/intern/math_geom.c +++ b/source/blender/blenlib/intern/math_geom.c @@ -4709,6 +4709,25 @@ void perspective_m4(float mat[4][4], mat[3][3] = 0.0f; } +void perspective_m4_fov(float mat[4][4], + const float angle_left, + const float angle_right, + const float angle_up, + const float angle_down, + const float nearClip, + const float farClip) +{ + const float tan_angle_left = tanf(angle_left); + const float tan_angle_right = tanf(angle_right); + const float tan_angle_bottom = tanf(angle_up); + const float tan_angle_top = tanf(angle_down); + + perspective_m4( + mat, tan_angle_left, tan_angle_right, tan_angle_top, tan_angle_bottom, nearClip, farClip); + mat[0][0] /= nearClip; + mat[1][1] /= nearClip; +} + /* translate a matrix created by orthographic_m4 or perspective_m4 in XY coords * (used to jitter the view) */ void window_translate_m4(float winmat[4][4], float perspmat[4][4], const float x, const float y) |