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/*
* Copyright (C) 2021 Igalia, S.L.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library 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
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public License
* aint with this library; see the file COPYING.LIB. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#pragma once
#if ENABLE(WEBXR) && USE(OPENXR)
// EGL symbols required by openxr_platform.h
#if USE(LIBEPOXY)
#define __GBM__ 1
#include <epoxy/egl.h>
#else
#include <EGL/egl.h>
#endif
#include "Logging.h"
#include "PlatformXR.h"
#include <openxr/openxr.h>
#include <openxr/openxr_platform.h>
#include <wtf/text/MakeString.h>
#include <wtf/text/WTFString.h>
namespace PlatformXR {
template<typename T, XrStructureType StructureType>
T createStructure()
{
T object;
std::memset(&object, 0, sizeof(T));
object.type = StructureType;
object.next = nullptr;
return object;
}
inline String resultToString(XrResult value, XrInstance instance)
{
char buffer[XR_MAX_RESULT_STRING_SIZE];
XrResult result = xrResultToString(instance, value, buffer);
if (result == XR_SUCCESS)
return String::fromLatin1(buffer);
return makeString("<unknown "_s, int(value), '>');
}
#define RETURN_IF_FAILED(call, label, instance, ...) \
{ \
auto xrResult = call; \
if (XR_FAILED(xrResult)) { \
LOG(XR, "%s %s: %s\n", __func__, label, resultToString(xrResult, instance).utf8().data()); \
return __VA_ARGS__; \
} \
}
#define RETURN_RESULT_IF_FAILED(call, instance, ...) \
{ \
auto xrResult = call; \
if (XR_FAILED(xrResult)) { \
LOG(XR, "%s %s: %s\n", __func__, #call, resultToString(xrResult, instance).utf8().data()); \
return xrResult; \
} \
}
#define LOG_IF_FAILED(result, call, instance, ...) \
if (XR_FAILED(result)) \
LOG(XR, "%s %s: %s\n", __func__, call, resultToString(result, instance).utf8().data());
inline FrameData::Pose XrPosefToPose(XrPosef pose)
{
FrameData::Pose result;
result.orientation = { pose.orientation.x, pose.orientation.y, pose.orientation.z, pose.orientation.w };
result.position = { pose.position.x, pose.position.y, pose.position.z };
return result;
}
inline FrameData::View xrViewToPose(XrView view)
{
FrameData::View pose;
pose.projection = FrameData::Fov { std::abs(view.fov.angleUp), std::abs(view.fov.angleDown), std::abs(view.fov.angleLeft), std::abs(view.fov.angleRight) };
pose.offset = XrPosefToPose(view.pose);
return pose;
}
inline XrPosef XrPoseIdentity()
{
XrPosef pose;
pose.orientation.w = 1.0;
return pose;
}
inline XrViewConfigurationType toXrViewConfigurationType(SessionMode mode)
{
switch (mode) {
case SessionMode::ImmersiveVr:
return XR_VIEW_CONFIGURATION_TYPE_PRIMARY_STEREO;
case SessionMode::Inline:
case SessionMode::ImmersiveAr:
return XR_VIEW_CONFIGURATION_TYPE_PRIMARY_MONO;
};
ASSERT_NOT_REACHED();
return XR_VIEW_CONFIGURATION_TYPE_PRIMARY_MONO;
}
inline String handednessToString(XRHandedness handedness)
{
switch (handedness) {
case XRHandedness::Left:
return "left"_s;
case XRHandedness::Right:
return "right"_s;
default:
ASSERT_NOT_REACHED();
return emptyString();
}
}
} // namespace PlatformXR
#endif // ENABLE(WEBXR) && USE(OPENXR)
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