dc2df8307f
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
119 lines
2.7 KiB
C
119 lines
2.7 KiB
C
/*
|
|
* This program is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU General Public License
|
|
* as published by the Free Software Foundation; either version 2
|
|
* of the License, or (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, write to the Free Software Foundation,
|
|
* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
|
|
*/
|
|
|
|
/** \file
|
|
* \ingroup wm
|
|
*/
|
|
|
|
#include "BKE_context.h"
|
|
|
|
#include "BLF_api.h"
|
|
|
|
#include "BLI_listbase.h"
|
|
#include "BLI_threads.h"
|
|
|
|
#include "GHOST_C-api.h"
|
|
|
|
#include "GPU_batch_presets.h"
|
|
#include "GPU_framebuffer.h"
|
|
#include "GPU_immediate.h"
|
|
#include "GPU_context.h"
|
|
|
|
#include "MEM_guardedalloc.h"
|
|
|
|
#include "WM_types.h"
|
|
#include "WM_api.h"
|
|
#include "wm.h"
|
|
|
|
#include "wm_surface.h"
|
|
|
|
static ListBase global_surface_list = {NULL, NULL};
|
|
static wmSurface *g_drawable = NULL;
|
|
|
|
void wm_surfaces_iter(bContext *C, void (*cb)(bContext *C, wmSurface *))
|
|
{
|
|
for (wmSurface *surf = global_surface_list.first; surf; surf = surf->next) {
|
|
cb(C, surf);
|
|
}
|
|
}
|
|
|
|
void wm_surface_clear_drawable(void)
|
|
{
|
|
if (g_drawable) {
|
|
BLF_batch_reset();
|
|
gpu_batch_presets_reset();
|
|
immDeactivate();
|
|
|
|
g_drawable = NULL;
|
|
}
|
|
}
|
|
|
|
void wm_surface_set_drawable(wmSurface *surface, bool activate)
|
|
{
|
|
BLI_assert(ELEM(g_drawable, NULL, surface));
|
|
|
|
g_drawable = surface;
|
|
if (activate) {
|
|
GHOST_ActivateOpenGLContext(surface->ghost_ctx);
|
|
}
|
|
|
|
GPU_context_active_set(surface->gpu_ctx);
|
|
immActivate();
|
|
}
|
|
|
|
void wm_surface_make_drawable(wmSurface *surface)
|
|
{
|
|
BLI_assert(GPU_framebuffer_active_get() == NULL);
|
|
|
|
if (surface != g_drawable) {
|
|
wm_surface_clear_drawable();
|
|
wm_surface_set_drawable(surface, true);
|
|
}
|
|
}
|
|
|
|
void wm_surface_reset_drawable(void)
|
|
{
|
|
BLI_assert(BLI_thread_is_main());
|
|
BLI_assert(GPU_framebuffer_active_get() == NULL);
|
|
|
|
if (g_drawable) {
|
|
wm_surface_clear_drawable();
|
|
wm_surface_set_drawable(g_drawable, true);
|
|
}
|
|
}
|
|
|
|
void wm_surface_add(wmSurface *surface)
|
|
{
|
|
BLI_addtail(&global_surface_list, surface);
|
|
}
|
|
|
|
void wm_surface_remove(wmSurface *surface)
|
|
{
|
|
BLI_remlink(&global_surface_list, surface);
|
|
surface->free_data(surface);
|
|
MEM_freeN(surface);
|
|
}
|
|
|
|
void wm_surfaces_free(void)
|
|
{
|
|
for (wmSurface *surf = global_surface_list.first, *surf_next; surf; surf = surf_next) {
|
|
surf_next = surf->next;
|
|
wm_surface_remove(surf);
|
|
}
|
|
|
|
BLI_assert(BLI_listbase_is_empty(&global_surface_list));
|
|
}
|