////  Created by Bradley Austin Davis on 2014/04/13.//  Copyright 2015 High Fidelity, Inc.////  Distributed under the Apache License, Version 2.0.//  See the accompanying file LICENSE or http://www.apache.org/licenses/LICENSE-2.0.html//#include "OculusDisplayPlugin.h" // Odd ordering of header is required to avoid 'macro redinition warnings'#include <AudioClient.h> #include <OVR_CAPI_Audio.h> #include <shared/NsightHelpers.h> #include "OculusHelpers.h" const QString OculusDisplayPlugin::NAME("Oculus Rift");static ovrPerfHudMode currentDebugMode = ovrPerfHud_Off; bool OculusDisplayPlugin::internalActivate() {    bool result = Parent::internalActivate();    currentDebugMode = ovrPerfHud_Off;    if (result && _session) {        ovr_SetInt(_session, OVR_PERF_HUD_MODE, currentDebugMode);    }    return result;} void OculusDisplayPlugin::init() {    Plugin::init();     emit deviceConnected(getName());} void OculusDisplayPlugin::cycleDebugOutput() {    if (_session) {        currentDebugMode = static_cast<ovrPerfHudMode>((currentDebugMode + 1) % ovrPerfHud_Count);        ovr_SetInt(_session, OVR_PERF_HUD_MODE, currentDebugMode);    }} void OculusDisplayPlugin::customizeContext() {    Parent::customizeContext();    _sceneFbo = SwapFboPtr(new SwapFramebufferWrapper(_session));    _sceneFbo->Init(getRecommendedRenderSize());     // We're rendering both eyes to the same texture, so only one of the     // pointers is populated    _sceneLayer.ColorTexture[0] = _sceneFbo->color;    // not needed since the structure was zeroed on init, but explicit    _sceneLayer.ColorTexture[1] = nullptr;     enableVsync(false);    // Only enable mirroring if we know vsync is disabled    _enablePreview = !isVsyncEnabled();} void OculusDisplayPlugin::uncustomizeContext() {    using namespace oglplus;        // Present a final black frame to the HMD    _compositeFramebuffer->Bound(FramebufferTarget::Draw, [] {        Context::ClearColor(0, 0, 0, 1);        Context::Clear().ColorBuffer();    });     hmdPresent();    #if (OVR_MAJOR_VERSION >= 6)    _sceneFbo.reset();#endif    Parent::uncustomizeContext();}  template <typename SrcFbo, typename DstFbo>void blit(const SrcFbo& srcFbo, const DstFbo& dstFbo) {    using namespace oglplus;    srcFbo->Bound(FramebufferTarget::Read, [&] {        dstFbo->Bound(FramebufferTarget::Draw, [&] {            Context::BlitFramebuffer(                0, 0, srcFbo->size.x, srcFbo->size.y,                0, 0, dstFbo->size.x, dstFbo->size.y,                BufferSelectBit::ColorBuffer, BlitFilter::Linear);        });    });} void OculusDisplayPlugin::hmdPresent() {     PROFILE_RANGE_EX(__FUNCTION__, 0xff00ff00, (uint64_t)_currentPresentFrameIndex)     if (!_currentSceneTexture) {        return;    }     blit(_compositeFramebuffer, _sceneFbo);    _sceneFbo->Commit();    {        _sceneLayer.SensorSampleTime = _currentPresentFrameInfo.sensorSampleTime;        _sceneLayer.RenderPose[ovrEyeType::ovrEye_Left] = ovrPoseFromGlm(_currentPresentFrameInfo.renderPose);        _sceneLayer.RenderPose[ovrEyeType::ovrEye_Right] = ovrPoseFromGlm(_currentPresentFrameInfo.renderPose);        ovrLayerHeader* layers = &_sceneLayer.Header;        ovrResult result = ovr_SubmitFrame(_session, _currentPresentFrameIndex, &_viewScaleDesc, &layers, 1);        if (!OVR_SUCCESS(result)) {            logWarning("Failed to present");        }    }} bool OculusDisplayPlugin::isHmdMounted() const {    ovrSessionStatus status;    return (OVR_SUCCESS(ovr_GetSessionStatus(_session, &status)) &&         (ovrFalse != status.HmdMounted));} QString OculusDisplayPlugin::getPreferredAudioInDevice() const {     WCHAR buffer[OVR_AUDIO_MAX_DEVICE_STR_SIZE];    if (!OVR_SUCCESS(ovr_GetAudioDeviceInGuidStr(buffer))) {        return QString();    }    return AudioClient::friendlyNameForAudioDevice(buffer);} QString OculusDisplayPlugin::getPreferredAudioOutDevice() const {     WCHAR buffer[OVR_AUDIO_MAX_DEVICE_STR_SIZE];    if (!OVR_SUCCESS(ovr_GetAudioDeviceOutGuidStr(buffer))) {        return QString();    }    return AudioClient::friendlyNameForAudioDevice(buffer);}