406bfd4304
Extends Ghost to include an abstraction for OpenXR, which I refer to as Ghost-XR. Such an API is the base for the following commit, which introduces VR support to Blender. Main features: * Simple and high-level interface for Blender specific code to call. * Extensible for muliple graphics backends, currently OpenGL and a DirectX compatibility layer are supported. * Carefully designed error handling strategy allowing Blender to handle errors gracefully and with useful error messages. * OpenXR extension and API-layer management. * OpenXR session management. * Basic OpenXR event management. * Debug utilities for Ghost-XR and OpenXR For more information on this API, check https://wiki.blender.org/wiki/Source/Interface/XR. Reviewed by: Brecht Van Lommel Differential Revision: https://developer.blender.org/D6188
65 lines
2.1 KiB
C++
65 lines
2.1 KiB
C++
/*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*/
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/** \file
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* \ingroup GHOST
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*/
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#include <iostream>
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#include "GHOST_C-api.h"
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#include "GHOST_Xr_intern.h"
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#include "GHOST_XrContext.h"
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static bool GHOST_XrEventPollNext(XrInstance instance, XrEventDataBuffer &r_event_data)
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{
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/* (Re-)initialize as required by specification. */
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r_event_data.type = XR_TYPE_EVENT_DATA_BUFFER;
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r_event_data.next = nullptr;
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return (xrPollEvent(instance, &r_event_data) == XR_SUCCESS);
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}
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GHOST_TSuccess GHOST_XrEventsHandle(GHOST_XrContextHandle xr_contexthandle)
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{
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GHOST_XrContext *xr_context = (GHOST_XrContext *)xr_contexthandle;
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XrEventDataBuffer event_buffer; /* Structure big enough to hold all possible events. */
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if (xr_context == NULL) {
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return GHOST_kFailure;
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}
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while (GHOST_XrEventPollNext(xr_context->getInstance(), event_buffer)) {
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XrEventDataBaseHeader *event = (XrEventDataBaseHeader *)&event_buffer;
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switch (event->type) {
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case XR_TYPE_EVENT_DATA_SESSION_STATE_CHANGED:
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xr_context->handleSessionStateChange((XrEventDataSessionStateChanged *)event);
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return GHOST_kSuccess;
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case XR_TYPE_EVENT_DATA_INSTANCE_LOSS_PENDING:
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GHOST_XrContextDestroy(xr_contexthandle);
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return GHOST_kSuccess;
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default:
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if (xr_context->isDebugMode()) {
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printf("Unhandled event: %i\n", event->type);
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}
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return GHOST_kFailure;
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}
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}
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return GHOST_kFailure;
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}
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