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gecko-dev/gfx/vr/gfxVROculus.cpp
Phil Ringnalda e0e1cf4354 Backed out 4 changesets (bug 1406327) for crashing other tests, crashing itself, and assertion failures 
Backed out changeset 471c710b19b1 (bug 1406327)
Backed out changeset 5890bb3a0d97 (bug 1406327)
Backed out changeset 63c8ee57e38c (bug 1406327)
Backed out changeset 345972733daa (bug 1406327)

MozReview-Commit-ID: IwWx11QSuS4
2017-11-01 21:44:12 -07:00

1924 lines
62 KiB
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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#ifndef XP_WIN
#error "Oculus 1.3 runtime support only available for Windows"
#endif
#include <math.h>
#include "prlink.h"
#include "prenv.h"
#include "gfxPrefs.h"
#include "nsString.h"
#include "mozilla/DebugOnly.h"
#include "mozilla/Preferences.h"
#include "mozilla/TimeStamp.h"
#include "mozilla/gfx/DeviceManagerDx.h"
#include "mozilla/layers/CompositorThread.h"
#include "ipc/VRLayerParent.h"
#include "mozilla/gfx/Quaternion.h"
#include <d3d11.h>
#include "CompositorD3D11.h"
#include "TextureD3D11.h"
#include "gfxVROculus.h"
#include "VRThread.h"
#include "mozilla/dom/GamepadEventTypes.h"
#include "mozilla/dom/GamepadBinding.h"
#include "mozilla/Telemetry.h"
/** XXX The DX11 objects and quad blitting could be encapsulated
* into a separate object if either Oculus starts supporting
* non-Windows platforms or the blit is needed by other HMD\
* drivers.
* Alternately, we could remove the extra blit for
* Oculus as well with some more refactoring.
*/
// See CompositorD3D11Shaders.h
namespace mozilla {
namespace layers {
struct ShaderBytes { const void* mData; size_t mLength; };
extern ShaderBytes sRGBShader;
extern ShaderBytes sLayerQuadVS;
} // namespace layers
} // namespace mozilla
#ifndef M_PI
# define M_PI 3.14159265358979323846
#endif
using namespace mozilla;
using namespace mozilla::gfx;
using namespace mozilla::gfx::impl;
using namespace mozilla::layers;
using namespace mozilla::dom;
namespace {
static pfn_ovr_Initialize ovr_Initialize = nullptr;
static pfn_ovr_Shutdown ovr_Shutdown = nullptr;
static pfn_ovr_GetLastErrorInfo ovr_GetLastErrorInfo = nullptr;
static pfn_ovr_GetVersionString ovr_GetVersionString = nullptr;
static pfn_ovr_TraceMessage ovr_TraceMessage = nullptr;
static pfn_ovr_IdentifyClient ovr_IdentifyClient = nullptr;
static pfn_ovr_GetHmdDesc ovr_GetHmdDesc = nullptr;
static pfn_ovr_GetTrackerCount ovr_GetTrackerCount = nullptr;
static pfn_ovr_GetTrackerDesc ovr_GetTrackerDesc = nullptr;
static pfn_ovr_Create ovr_Create = nullptr;
static pfn_ovr_Destroy ovr_Destroy = nullptr;
static pfn_ovr_GetSessionStatus ovr_GetSessionStatus = nullptr;
static pfn_ovr_IsExtensionSupported ovr_IsExtensionSupported = nullptr;
static pfn_ovr_EnableExtension ovr_EnableExtension = nullptr;
static pfn_ovr_SetTrackingOriginType ovr_SetTrackingOriginType = nullptr;
static pfn_ovr_GetTrackingOriginType ovr_GetTrackingOriginType = nullptr;
static pfn_ovr_RecenterTrackingOrigin ovr_RecenterTrackingOrigin = nullptr;
static pfn_ovr_SpecifyTrackingOrigin ovr_SpecifyTrackingOrigin = nullptr;
static pfn_ovr_ClearShouldRecenterFlag ovr_ClearShouldRecenterFlag = nullptr;
static pfn_ovr_GetTrackingState ovr_GetTrackingState = nullptr;
static pfn_ovr_GetDevicePoses ovr_GetDevicePoses = nullptr;
static pfn_ovr_GetTrackerPose ovr_GetTrackerPose = nullptr;
static pfn_ovr_GetInputState ovr_GetInputState = nullptr;
static pfn_ovr_GetConnectedControllerTypes ovr_GetConnectedControllerTypes = nullptr;
static pfn_ovr_GetTouchHapticsDesc ovr_GetTouchHapticsDesc = nullptr;
static pfn_ovr_SetControllerVibration ovr_SetControllerVibration = nullptr;
static pfn_ovr_SubmitControllerVibration ovr_SubmitControllerVibration = nullptr;
static pfn_ovr_GetControllerVibrationState ovr_GetControllerVibrationState = nullptr;
static pfn_ovr_TestBoundary ovr_TestBoundary = nullptr;
static pfn_ovr_TestBoundaryPoint ovr_TestBoundaryPoint = nullptr;
static pfn_ovr_SetBoundaryLookAndFeel ovr_SetBoundaryLookAndFeel = nullptr;
static pfn_ovr_ResetBoundaryLookAndFeel ovr_ResetBoundaryLookAndFeel = nullptr;
static pfn_ovr_GetBoundaryGeometry ovr_GetBoundaryGeometry = nullptr;
static pfn_ovr_GetBoundaryDimensions ovr_GetBoundaryDimensions = nullptr;
static pfn_ovr_GetBoundaryVisible ovr_GetBoundaryVisible = nullptr;
static pfn_ovr_RequestBoundaryVisible ovr_RequestBoundaryVisible = nullptr;
static pfn_ovr_GetTextureSwapChainLength ovr_GetTextureSwapChainLength = nullptr;
static pfn_ovr_GetTextureSwapChainCurrentIndex ovr_GetTextureSwapChainCurrentIndex = nullptr;
static pfn_ovr_GetTextureSwapChainDesc ovr_GetTextureSwapChainDesc = nullptr;
static pfn_ovr_CommitTextureSwapChain ovr_CommitTextureSwapChain = nullptr;
static pfn_ovr_DestroyTextureSwapChain ovr_DestroyTextureSwapChain = nullptr;
static pfn_ovr_DestroyMirrorTexture ovr_DestroyMirrorTexture = nullptr;
static pfn_ovr_GetFovTextureSize ovr_GetFovTextureSize = nullptr;
static pfn_ovr_GetRenderDesc2 ovr_GetRenderDesc2 = nullptr;
static pfn_ovr_WaitToBeginFrame ovr_WaitToBeginFrame = nullptr;
static pfn_ovr_BeginFrame ovr_BeginFrame = nullptr;
static pfn_ovr_EndFrame ovr_EndFrame = nullptr;
static pfn_ovr_SubmitFrame ovr_SubmitFrame = nullptr;
static pfn_ovr_GetPerfStats ovr_GetPerfStats = nullptr;
static pfn_ovr_ResetPerfStats ovr_ResetPerfStats = nullptr;
static pfn_ovr_GetPredictedDisplayTime ovr_GetPredictedDisplayTime = nullptr;
static pfn_ovr_GetTimeInSeconds ovr_GetTimeInSeconds = nullptr;
static pfn_ovr_GetBool ovr_GetBool = nullptr;
static pfn_ovr_SetBool ovr_SetBool = nullptr;
static pfn_ovr_GetInt ovr_GetInt = nullptr;
static pfn_ovr_SetInt ovr_SetInt = nullptr;
static pfn_ovr_GetFloat ovr_GetFloat = nullptr;
static pfn_ovr_SetFloat ovr_SetFloat = nullptr;
static pfn_ovr_GetFloatArray ovr_GetFloatArray = nullptr;
static pfn_ovr_SetFloatArray ovr_SetFloatArray = nullptr;
static pfn_ovr_GetString ovr_GetString = nullptr;
static pfn_ovr_SetString ovr_SetString = nullptr;
static pfn_ovr_GetExternalCameras ovr_GetExternalCameras = nullptr;
static pfn_ovr_SetExternalCameraProperties ovr_SetExternalCameraProperties = nullptr;
#ifdef XP_WIN
static pfn_ovr_CreateTextureSwapChainDX ovr_CreateTextureSwapChainDX = nullptr;
static pfn_ovr_GetTextureSwapChainBufferDX ovr_GetTextureSwapChainBufferDX = nullptr;
static pfn_ovr_CreateMirrorTextureDX ovr_CreateMirrorTextureDX = nullptr;
static pfn_ovr_GetMirrorTextureBufferDX ovr_GetMirrorTextureBufferDX = nullptr;
#endif
static pfn_ovr_CreateTextureSwapChainGL ovr_CreateTextureSwapChainGL = nullptr;
static pfn_ovr_GetTextureSwapChainBufferGL ovr_GetTextureSwapChainBufferGL = nullptr;
static pfn_ovr_CreateMirrorTextureGL ovr_CreateMirrorTextureGL = nullptr;
static pfn_ovr_GetMirrorTextureBufferGL ovr_GetMirrorTextureBufferGL = nullptr;
#ifdef HAVE_64BIT_BUILD
#define BUILD_BITS 64
#else
#define BUILD_BITS 32
#endif
#define OVR_PRODUCT_VERSION 1
#define OVR_MAJOR_VERSION 1
#define OVR_MINOR_VERSION 19
enum class OculusLeftControllerButtonType : uint16_t {
LThumb,
IndexTrigger,
HandTrigger,
Button_X,
Button_Y,
LThumbRest,
NumButtonType
};
enum class OculusRightControllerButtonType : uint16_t {
RThumb,
IndexTrigger,
HandTrigger,
Button_A,
Button_B,
RThumbRest,
NumButtonType
};
static const uint32_t kNumOculusButton = static_cast<uint32_t>
(OculusLeftControllerButtonType::
NumButtonType);
static const uint32_t kNumOculusHaptcs = 1;
ovrFovPort
ToFovPort(const VRFieldOfView& aFOV)
{
ovrFovPort fovPort;
fovPort.LeftTan = tan(aFOV.leftDegrees * M_PI / 180.0);
fovPort.RightTan = tan(aFOV.rightDegrees * M_PI / 180.0);
fovPort.UpTan = tan(aFOV.upDegrees * M_PI / 180.0);
fovPort.DownTan = tan(aFOV.downDegrees * M_PI / 180.0);
return fovPort;
}
VRFieldOfView
FromFovPort(const ovrFovPort& aFOV)
{
VRFieldOfView fovInfo;
fovInfo.leftDegrees = atan(aFOV.LeftTan) * 180.0 / M_PI;
fovInfo.rightDegrees = atan(aFOV.RightTan) * 180.0 / M_PI;
fovInfo.upDegrees = atan(aFOV.UpTan) * 180.0 / M_PI;
fovInfo.downDegrees = atan(aFOV.DownTan) * 180.0 / M_PI;
return fovInfo;
}
} // namespace
VROculusSession::VROculusSession()
: mOvrLib(nullptr)
, mSession(nullptr)
, mInitFlags((ovrInitFlags)0)
, mTextureSet(nullptr)
, mPresenting(false)
, mDrawBlack(false)
{
}
ovrSession
VROculusSession::Get()
{
MOZ_ASSERT(mSession);
return mSession;
}
bool
VROculusSession::IsTrackingReady() const
{
return mSession != nullptr;
}
bool
VROculusSession::IsRenderReady() const
{
return !mRenderTargets.IsEmpty();
}
void
VROculusSession::StopTracking()
{
Uninitialize(true);
}
void
VROculusSession::StartPresentation(const IntSize& aSize)
{
if (!mPresenting) {
mPresenting = true;
mTelemetry.Clear();
mTelemetry.mPresentationStart = TimeStamp::Now();
ovrPerfStats perfStats;
if (ovr_GetPerfStats(mSession, &perfStats) == ovrSuccess) {
if (perfStats.FrameStatsCount) {
mTelemetry.mLastDroppedFrameCount = perfStats.FrameStats[0].AppDroppedFrameCount;
}
}
}
// Update the size, even when we are already presenting.
mPresentationSize = aSize;
Refresh();
}
void
VROculusSession::StopPresentation()
{
if (mPresenting) {
mLastPresentationEnd = TimeStamp::Now();
mPresenting = false;
const TimeDuration duration = mLastPresentationEnd - mTelemetry.mPresentationStart;
Telemetry::Accumulate(Telemetry::WEBVR_USERS_VIEW_IN, 1);
Telemetry::Accumulate(Telemetry::WEBVR_TIME_SPENT_VIEWING_IN_OCULUS,
duration.ToMilliseconds());
if (mTelemetry.IsLastDroppedFrameValid() && duration.ToSeconds()) {
ovrPerfStats perfStats;
if (ovr_GetPerfStats(mSession, &perfStats) == ovrSuccess) {
if (perfStats.FrameStatsCount) {
const uint32_t droppedFramesPerSec = (perfStats.FrameStats[0].AppDroppedFrameCount -
mTelemetry.mLastDroppedFrameCount) / duration.ToSeconds();
Telemetry::Accumulate(Telemetry::WEBVR_DROPPED_FRAMES_IN_OCULUS, droppedFramesPerSec);
}
}
}
Refresh();
}
}
VROculusSession::~VROculusSession()
{
Uninitialize(true);
}
void
VROculusSession::Uninitialize(bool aUnloadLib)
{
StopRendering();
StopSession();
StopLib();
if (aUnloadLib) {
UnloadOvrLib();
}
}
void
VROculusSession::StopRendering()
{
if (!mRenderTargets.IsEmpty()) {
mRenderTargets.Clear();
}
if (mTextureSet && mSession) {
ovr_DestroyTextureSwapChain(mSession, mTextureSet);
}
mTextureSet = nullptr;
mDevice = nullptr;
}
void
VROculusSession::StopSession()
{
if (mSession) {
ovr_Destroy(mSession);
mSession = nullptr;
}
}
void
VROculusSession::StopLib()
{
if (mInitFlags) {
ovr_Shutdown();
mInitFlags = (ovrInitFlags)0;
}
}
void
VROculusSession::Refresh(bool aForceRefresh)
{
// We are waiting for drawing the black layer command for
// Compositor thread. Ignore Refresh() calls from other threads.
if (mDrawBlack && !aForceRefresh) {
return;
}
ovrInitFlags flags = (ovrInitFlags)(ovrInit_RequestVersion | ovrInit_MixedRendering);
bool bInvisible = true;
if (mPresenting) {
bInvisible = false;
} else if (!mLastPresentationEnd.IsNull()) {
TimeDuration duration = TimeStamp::Now() - mLastPresentationEnd;
TimeDuration timeout = TimeDuration::FromMilliseconds(gfxPrefs::VROculusPresentTimeout());
if (timeout > TimeDuration(0) && duration < timeout) {
// Do not immediately re-initialize with an invisible session after
// the end of a VR presentation. Waiting for the configured duraction
// ensures that the user will not drop to Oculus Home during VR link
// traversal.
bInvisible = false;
// While we are waiting for either the timeout or a new presentation,
// fill the HMD with black / no layers.
if (mSession && mTextureSet) {
if (!aForceRefresh) {
// ovr_SubmitFrame is only allowed been run at Compositor thread,
// so we post this task to Compositor thread and let it determine
// if reloading library.
mDrawBlack = true;
MessageLoop* loop = layers::CompositorThreadHolder::Loop();
loop->PostTask(NewRunnableMethod<bool>(
"gfx::VROculusSession::Refresh",
this,
&VROculusSession::Refresh, true));
return;
}
ovrLayerEyeFov layer;
memset(&layer, 0, sizeof(layer));
layer.Header.Type = ovrLayerType_Disabled;
ovrLayerHeader *layers = &layer.Header;
ovr_SubmitFrame(mSession, 0, nullptr, &layers, 1);
mDrawBlack = false;
}
}
}
if (bInvisible) {
flags = (ovrInitFlags)(flags | ovrInit_Invisible);
}
if (mInitFlags != flags) {
Uninitialize(false);
}
Initialize(flags);
if (mSession) {
ovrSessionStatus status;
if (OVR_SUCCESS(ovr_GetSessionStatus(mSession, &status))) {
if (status.ShouldQuit) {
mLastShouldQuit = TimeStamp::Now();
Uninitialize(true);
}
}
}
}
bool
VROculusSession::IsQuitTimeoutActive()
{
// If Oculus asked us to quit our session, do not try to initialize again
// immediately.
if (!mLastShouldQuit.IsNull()) {
TimeDuration duration = TimeStamp::Now() - mLastShouldQuit;
TimeDuration timeout = TimeDuration::FromMilliseconds(gfxPrefs::VROculusQuitTimeout());
if (timeout > TimeDuration(0) && duration < timeout) {
return true;
}
}
return false;
}
bool
VROculusSession::Initialize(ovrInitFlags aFlags)
{
if (IsQuitTimeoutActive()) {
return false;
}
if (!LoadOvrLib()) {
return false;
}
if (!StartLib(aFlags)) {
return false;
}
if (!StartSession()) {
return false;
}
if (!StartRendering()) {
return false;
}
return true;
}
bool
VROculusSession::StartRendering()
{
if (!mPresenting) {
// Nothing to do if we aren't presenting
return true;
}
if (!mDevice) {
mDevice = gfx::DeviceManagerDx::Get()->GetCompositorDevice();
if (!mDevice) {
NS_WARNING("Failed to get a D3D11Device for Oculus");
return false;
}
}
if (!mTextureSet) {
/**
* The presentation format is determined by content, which describes the
* left and right eye rectangles in the VRLayer. The default, if no
* coordinates are passed is to place the left and right eye textures
* side-by-side within the buffer.
*
* XXX - An optimization would be to dynamically resize this buffer
* to accomodate sites that are choosing to render in a lower
* resolution or are using space outside of the left and right
* eye textures for other purposes. (Bug 1291443)
*/
ovrTextureSwapChainDesc desc;
memset(&desc, 0, sizeof(desc));
desc.Type = ovrTexture_2D;
desc.ArraySize = 1;
desc.Format = OVR_FORMAT_B8G8R8A8_UNORM_SRGB;
desc.Width = mPresentationSize.width;
desc.Height = mPresentationSize.height;
desc.MipLevels = 1;
desc.SampleCount = 1;
desc.StaticImage = false;
desc.MiscFlags = ovrTextureMisc_DX_Typeless;
desc.BindFlags = ovrTextureBind_DX_RenderTarget;
ovrResult orv = ovr_CreateTextureSwapChainDX(mSession, mDevice, &desc, &mTextureSet);
if (orv != ovrSuccess) {
NS_WARNING("ovr_CreateTextureSwapChainDX failed");
return false;
}
}
if (mTextureSet && mRenderTargets.IsEmpty()) {
int textureCount = 0;
ovrResult orv = ovr_GetTextureSwapChainLength(mSession, mTextureSet, &textureCount);
if (orv != ovrSuccess) {
NS_WARNING("ovr_GetTextureSwapChainLength failed");
return false;
}
mRenderTargets.SetLength(textureCount);
for (int i = 0; i < textureCount; ++i) {
RefPtr<CompositingRenderTargetD3D11> rt;
ID3D11Texture2D* texture = nullptr;
orv = ovr_GetTextureSwapChainBufferDX(mSession, mTextureSet, i, IID_PPV_ARGS(&texture));
MOZ_ASSERT(orv == ovrSuccess, "ovr_GetTextureSwapChainBufferDX failed.");
rt = new CompositingRenderTargetD3D11(texture, IntPoint(0, 0), DXGI_FORMAT_B8G8R8A8_UNORM);
rt->SetSize(mPresentationSize);
mRenderTargets[i] = rt;
texture->Release();
}
}
return true;
}
bool
VROculusSession::StartLib(ovrInitFlags aFlags)
{
if (mInitFlags == 0) {
ovrInitParams params;
memset(&params, 0, sizeof(params));
params.Flags = aFlags;
params.RequestedMinorVersion = OVR_MINOR_VERSION;
params.LogCallback = nullptr;
params.ConnectionTimeoutMS = 0;
ovrResult orv = ovr_Initialize(&params);
if (orv == ovrSuccess) {
mInitFlags = aFlags;
}
else {
return false;
}
}
MOZ_ASSERT(mInitFlags == aFlags);
return true;
}
bool
VROculusSession::StartSession()
{
// ovr_Create can be slow when no HMD is present and we wish
// to keep the same oculus session when possible, so we detect
// presence of an HMD with ovr_GetHmdDesc before calling ovr_Create
ovrHmdDesc desc = ovr_GetHmdDesc(NULL);
if (desc.Type == ovrHmd_None) {
// No HMD connected, destroy any existing session
if (mSession) {
ovr_Destroy(mSession);
mSession = nullptr;
}
return false;
}
if (mSession != nullptr) {
// HMD Detected and we already have a session, let's keep using it.
return true;
}
// HMD Detected and we don't have a session yet,
// try to create a new session
ovrSession session;
ovrGraphicsLuid luid;
ovrResult orv = ovr_Create(&session, &luid);
if (orv == ovrSuccess) {
orv = ovr_SetTrackingOriginType(session, ovrTrackingOrigin_FloorLevel);
if (orv != ovrSuccess) {
NS_WARNING("ovr_SetTrackingOriginType failed.\n");
}
mSession = session;
return true;
}
// Failed to create a session for the HMD
return false;
}
bool
VROculusSession::LoadOvrLib()
{
if (mOvrLib) {
// Already loaded, early exit
return true;
}
nsTArray<nsCString> libSearchPaths;
nsCString libName;
nsCString searchPath;
#if defined(_WIN32)
static const char dirSep = '\\';
static const int pathLen = 260;
searchPath.SetCapacity(pathLen);
int realLen = ::GetSystemDirectoryA(searchPath.BeginWriting(), pathLen);
if (realLen != 0 && realLen < pathLen) {
searchPath.SetLength(realLen);
libSearchPaths.AppendElement(searchPath);
}
libName.AppendPrintf("LibOVRRT%d_%d.dll", BUILD_BITS, OVR_PRODUCT_VERSION);
#else
#error "Unsupported platform!"
#endif
// search the path/module dir
libSearchPaths.InsertElementsAt(0, 1, nsCString());
// If the env var is present, we override libName
if (PR_GetEnv("OVR_LIB_PATH")) {
searchPath = PR_GetEnv("OVR_LIB_PATH");
libSearchPaths.InsertElementsAt(0, 1, searchPath);
}
if (PR_GetEnv("OVR_LIB_NAME")) {
libName = PR_GetEnv("OVR_LIB_NAME");
}
for (uint32_t i = 0; i < libSearchPaths.Length(); ++i) {
nsCString& libPath = libSearchPaths[i];
nsCString fullName;
if (libPath.Length() == 0) {
fullName.Assign(libName);
} else {
fullName.AppendPrintf("%s%c%s", libPath.BeginReading(), dirSep, libName.BeginReading());
}
mOvrLib = PR_LoadLibrary(fullName.BeginReading());
if (mOvrLib) {
break;
}
}
if (!mOvrLib) {
return false;
}
#define REQUIRE_FUNCTION(_x) do { \
*(void **)&_x = (void *) PR_FindSymbol(mOvrLib, #_x); \
if (!_x) { printf_stderr(#_x " symbol missing\n"); goto fail; } \
} while (0)
REQUIRE_FUNCTION(ovr_Initialize);
REQUIRE_FUNCTION(ovr_Shutdown);
REQUIRE_FUNCTION(ovr_GetLastErrorInfo);
REQUIRE_FUNCTION(ovr_GetVersionString);
REQUIRE_FUNCTION(ovr_TraceMessage);
REQUIRE_FUNCTION(ovr_IdentifyClient);
REQUIRE_FUNCTION(ovr_GetHmdDesc);
REQUIRE_FUNCTION(ovr_GetTrackerCount);
REQUIRE_FUNCTION(ovr_GetTrackerDesc);
REQUIRE_FUNCTION(ovr_Create);
REQUIRE_FUNCTION(ovr_Destroy);
REQUIRE_FUNCTION(ovr_GetSessionStatus);
REQUIRE_FUNCTION(ovr_IsExtensionSupported);
REQUIRE_FUNCTION(ovr_EnableExtension);
REQUIRE_FUNCTION(ovr_SetTrackingOriginType);
REQUIRE_FUNCTION(ovr_GetTrackingOriginType);
REQUIRE_FUNCTION(ovr_RecenterTrackingOrigin);
REQUIRE_FUNCTION(ovr_SpecifyTrackingOrigin);
REQUIRE_FUNCTION(ovr_ClearShouldRecenterFlag);
REQUIRE_FUNCTION(ovr_GetTrackingState);
REQUIRE_FUNCTION(ovr_GetDevicePoses);
REQUIRE_FUNCTION(ovr_GetTrackerPose);
REQUIRE_FUNCTION(ovr_GetInputState);
REQUIRE_FUNCTION(ovr_GetConnectedControllerTypes);
REQUIRE_FUNCTION(ovr_GetTouchHapticsDesc);
REQUIRE_FUNCTION(ovr_SetControllerVibration);
REQUIRE_FUNCTION(ovr_SubmitControllerVibration);
REQUIRE_FUNCTION(ovr_GetControllerVibrationState);
REQUIRE_FUNCTION(ovr_TestBoundary);
REQUIRE_FUNCTION(ovr_TestBoundaryPoint);
REQUIRE_FUNCTION(ovr_SetBoundaryLookAndFeel);
REQUIRE_FUNCTION(ovr_ResetBoundaryLookAndFeel);
REQUIRE_FUNCTION(ovr_GetBoundaryGeometry);
REQUIRE_FUNCTION(ovr_GetBoundaryDimensions);
REQUIRE_FUNCTION(ovr_GetBoundaryVisible);
REQUIRE_FUNCTION(ovr_RequestBoundaryVisible);
REQUIRE_FUNCTION(ovr_GetTextureSwapChainLength);
REQUIRE_FUNCTION(ovr_GetTextureSwapChainCurrentIndex);
REQUIRE_FUNCTION(ovr_GetTextureSwapChainDesc);
REQUIRE_FUNCTION(ovr_CommitTextureSwapChain);
REQUIRE_FUNCTION(ovr_DestroyTextureSwapChain);
REQUIRE_FUNCTION(ovr_DestroyMirrorTexture);
REQUIRE_FUNCTION(ovr_GetFovTextureSize);
REQUIRE_FUNCTION(ovr_GetRenderDesc2);
REQUIRE_FUNCTION(ovr_WaitToBeginFrame);
REQUIRE_FUNCTION(ovr_BeginFrame);
REQUIRE_FUNCTION(ovr_EndFrame);
REQUIRE_FUNCTION(ovr_SubmitFrame);
REQUIRE_FUNCTION(ovr_GetPerfStats);
REQUIRE_FUNCTION(ovr_ResetPerfStats);
REQUIRE_FUNCTION(ovr_GetPredictedDisplayTime);
REQUIRE_FUNCTION(ovr_GetTimeInSeconds);
REQUIRE_FUNCTION(ovr_GetBool);
REQUIRE_FUNCTION(ovr_SetBool);
REQUIRE_FUNCTION(ovr_GetInt);
REQUIRE_FUNCTION(ovr_SetInt);
REQUIRE_FUNCTION(ovr_GetFloat);
REQUIRE_FUNCTION(ovr_SetFloat);
REQUIRE_FUNCTION(ovr_GetFloatArray);
REQUIRE_FUNCTION(ovr_SetFloatArray);
REQUIRE_FUNCTION(ovr_GetString);
REQUIRE_FUNCTION(ovr_SetString);
REQUIRE_FUNCTION(ovr_GetExternalCameras);
REQUIRE_FUNCTION(ovr_SetExternalCameraProperties);
#ifdef XP_WIN
REQUIRE_FUNCTION(ovr_CreateTextureSwapChainDX);
REQUIRE_FUNCTION(ovr_GetTextureSwapChainBufferDX);
REQUIRE_FUNCTION(ovr_CreateMirrorTextureDX);
REQUIRE_FUNCTION(ovr_GetMirrorTextureBufferDX);
#endif
REQUIRE_FUNCTION(ovr_CreateTextureSwapChainGL);
REQUIRE_FUNCTION(ovr_GetTextureSwapChainBufferGL);
REQUIRE_FUNCTION(ovr_CreateMirrorTextureGL);
REQUIRE_FUNCTION(ovr_GetMirrorTextureBufferGL);
#undef REQUIRE_FUNCTION
return true;
fail:
ovr_Initialize = nullptr;
PR_UnloadLibrary(mOvrLib);
mOvrLib = nullptr;
return false;
}
already_AddRefed<CompositingRenderTargetD3D11>
VROculusSession::GetNextRenderTarget()
{
int currentRenderTarget = 0;
DebugOnly<ovrResult> orv = ovr_GetTextureSwapChainCurrentIndex(mSession, mTextureSet, &currentRenderTarget);
MOZ_ASSERT(orv == ovrSuccess, "ovr_GetTextureSwapChainCurrentIndex failed.");
mRenderTargets[currentRenderTarget]->ClearOnBind();
RefPtr<CompositingRenderTargetD3D11> rt = mRenderTargets[currentRenderTarget];
return rt.forget();
}
ovrTextureSwapChain
VROculusSession::GetSwapChain()
{
MOZ_ASSERT(mTextureSet);
return mTextureSet;
}
void
VROculusSession::UnloadOvrLib()
{
if (mOvrLib) {
PR_UnloadLibrary(mOvrLib);
mOvrLib = nullptr;
}
}
VRDisplayOculus::VRDisplayOculus(VROculusSession* aSession)
: VRDisplayHost(VRDeviceType::Oculus)
, mSession(aSession)
, mQuadVS(nullptr)
, mQuadPS(nullptr)
, mLinearSamplerState(nullptr)
, mVSConstantBuffer(nullptr)
, mPSConstantBuffer(nullptr)
, mVertexBuffer(nullptr)
, mInputLayout(nullptr)
, mEyeHeight(OVR_DEFAULT_EYE_HEIGHT)
{
MOZ_COUNT_CTOR_INHERITED(VRDisplayOculus, VRDisplayHost);
mDisplayInfo.mDisplayName.AssignLiteral("Oculus VR HMD");
mDisplayInfo.mIsConnected = true;
mDisplayInfo.mIsMounted = false;
mDesc = ovr_GetHmdDesc(aSession->Get());
mDisplayInfo.mCapabilityFlags = VRDisplayCapabilityFlags::Cap_None;
if (mDesc.AvailableTrackingCaps & ovrTrackingCap_Orientation) {
mDisplayInfo.mCapabilityFlags |= VRDisplayCapabilityFlags::Cap_Orientation;
mDisplayInfo.mCapabilityFlags |= VRDisplayCapabilityFlags::Cap_AngularAcceleration;
}
if (mDesc.AvailableTrackingCaps & ovrTrackingCap_Position) {
mDisplayInfo.mCapabilityFlags |= VRDisplayCapabilityFlags::Cap_Position;
mDisplayInfo.mCapabilityFlags |= VRDisplayCapabilityFlags::Cap_LinearAcceleration;
mDisplayInfo.mCapabilityFlags |= VRDisplayCapabilityFlags::Cap_StageParameters;
}
mDisplayInfo.mCapabilityFlags |= VRDisplayCapabilityFlags::Cap_External;
mDisplayInfo.mCapabilityFlags |= VRDisplayCapabilityFlags::Cap_MountDetection;
mDisplayInfo.mCapabilityFlags |= VRDisplayCapabilityFlags::Cap_Present;
mFOVPort[VRDisplayInfo::Eye_Left] = mDesc.DefaultEyeFov[ovrEye_Left];
mFOVPort[VRDisplayInfo::Eye_Right] = mDesc.DefaultEyeFov[ovrEye_Right];
mDisplayInfo.mEyeFOV[VRDisplayInfo::Eye_Left] = FromFovPort(mFOVPort[VRDisplayInfo::Eye_Left]);
mDisplayInfo.mEyeFOV[VRDisplayInfo::Eye_Right] = FromFovPort(mFOVPort[VRDisplayInfo::Eye_Right]);
float pixelsPerDisplayPixel = 1.0;
ovrSizei texSize[2];
// get eye texture sizes
for (uint32_t eye = 0; eye < VRDisplayInfo::NumEyes; eye++) {
texSize[eye] = ovr_GetFovTextureSize(mSession->Get(), (ovrEyeType)eye, mFOVPort[eye], pixelsPerDisplayPixel);
}
// take the max of both for eye resolution
mDisplayInfo.mEyeResolution.width = std::max(texSize[VRDisplayInfo::Eye_Left].w, texSize[VRDisplayInfo::Eye_Right].w);
mDisplayInfo.mEyeResolution.height = std::max(texSize[VRDisplayInfo::Eye_Left].h, texSize[VRDisplayInfo::Eye_Right].h);
UpdateEyeParameters();
UpdateStageParameters();
}
VRDisplayOculus::~VRDisplayOculus() {
Destroy();
MOZ_COUNT_DTOR_INHERITED(VRDisplayOculus, VRDisplayHost);
}
void
VRDisplayOculus::Destroy()
{
StopPresentation();
mSession = nullptr;
}
void
VRDisplayOculus::UpdateEyeParameters(gfx::Matrix4x4* aHeadToEyeTransforms /* = nullptr */)
{
// Note this must be called every frame, as the IPD adjustment can be changed
// by the user during a VR session.
for (uint32_t eye = 0; eye < VRDisplayInfo::NumEyes; eye++) {
// As of Oculus 1.17 SDK, we must use the ovr_GetRenderDesc2 function to return the updated
// version of ovrEyeRenderDesc. This is normally done by the Oculus static lib shim, but we
// need to do this explicitly as we are loading the Oculus runtime dll directly.
ovrEyeRenderDesc renderDesc = ovr_GetRenderDesc2(mSession->Get(), (ovrEyeType)eye, mFOVPort[eye]);
mDisplayInfo.mEyeTranslation[eye].x = renderDesc.HmdToEyePose.Position.x;
mDisplayInfo.mEyeTranslation[eye].y = renderDesc.HmdToEyePose.Position.y;
mDisplayInfo.mEyeTranslation[eye].z = renderDesc.HmdToEyePose.Position.z;
if (aHeadToEyeTransforms) {
Matrix4x4 pose;
pose.SetRotationFromQuaternion(gfx::Quaternion(renderDesc.HmdToEyePose.Orientation.x, renderDesc.HmdToEyePose.Orientation.y, renderDesc.HmdToEyePose.Orientation.z, renderDesc.HmdToEyePose.Orientation.w));
pose.PreTranslate(renderDesc.HmdToEyePose.Position.x, renderDesc.HmdToEyePose.Position.y, renderDesc.HmdToEyePose.Position.z);
pose.Invert();
aHeadToEyeTransforms[eye] = pose;
}
}
}
void
VRDisplayOculus::UpdateStageParameters()
{
if (!mSession->IsTrackingReady()) {
return;
}
ovrVector3f playArea;
ovrResult res = ovr_GetBoundaryDimensions(mSession->Get(), ovrBoundary_PlayArea, &playArea);
if (res == ovrSuccess) {
mDisplayInfo.mStageSize.width = playArea.x;
mDisplayInfo.mStageSize.height = playArea.z;
} else {
// If we fail, fall back to reasonable defaults.
// 1m x 1m space
mDisplayInfo.mStageSize.width = 1.0f;
mDisplayInfo.mStageSize.height = 1.0f;
}
mEyeHeight = ovr_GetFloat(mSession->Get(), OVR_KEY_EYE_HEIGHT, OVR_DEFAULT_EYE_HEIGHT);
mDisplayInfo.mSittingToStandingTransform._11 = 1.0f;
mDisplayInfo.mSittingToStandingTransform._12 = 0.0f;
mDisplayInfo.mSittingToStandingTransform._13 = 0.0f;
mDisplayInfo.mSittingToStandingTransform._14 = 0.0f;
mDisplayInfo.mSittingToStandingTransform._21 = 0.0f;
mDisplayInfo.mSittingToStandingTransform._22 = 1.0f;
mDisplayInfo.mSittingToStandingTransform._23 = 0.0f;
mDisplayInfo.mSittingToStandingTransform._24 = 0.0f;
mDisplayInfo.mSittingToStandingTransform._31 = 0.0f;
mDisplayInfo.mSittingToStandingTransform._32 = 0.0f;
mDisplayInfo.mSittingToStandingTransform._33 = 1.0f;
mDisplayInfo.mSittingToStandingTransform._34 = 0.0f;
mDisplayInfo.mSittingToStandingTransform._41 = 0.0f;
mDisplayInfo.mSittingToStandingTransform._42 = mEyeHeight;
mDisplayInfo.mSittingToStandingTransform._43 = 0.0f;
mDisplayInfo.mSittingToStandingTransform._44 = 1.0f;
}
void
VRDisplayOculus::ZeroSensor()
{
if (!mSession->IsTrackingReady()) {
return;
}
ovr_RecenterTrackingOrigin(mSession->Get());
UpdateStageParameters();
}
VRHMDSensorState
VRDisplayOculus::GetSensorState()
{
VRHMDSensorState result{};
if (mSession->IsTrackingReady()) {
gfx::Matrix4x4 headToEyeTransforms[2];
UpdateEyeParameters(headToEyeTransforms);
double predictedFrameTime = 0.0f;
if (gfxPrefs::VRPosePredictionEnabled()) {
// XXX We might need to call ovr_GetPredictedDisplayTime even if we don't use the result.
// If we don't call it, the Oculus driver will spew out many warnings...
predictedFrameTime = ovr_GetPredictedDisplayTime(mSession->Get(), 0);
}
result = GetSensorState(predictedFrameTime);
result.position[1] -= mEyeHeight;
result.CalcViewMatrices(headToEyeTransforms);
}
result.inputFrameID = mDisplayInfo.mFrameId;
return result;
}
VRHMDSensorState
VRDisplayOculus::GetSensorState(double absTime)
{
VRHMDSensorState result{};
ovrTrackingState state = ovr_GetTrackingState(mSession->Get(), absTime, true);
ovrPoseStatef& pose(state.HeadPose);
result.timestamp = pose.TimeInSeconds;
if (state.StatusFlags & ovrStatus_OrientationTracked) {
result.flags |= VRDisplayCapabilityFlags::Cap_Orientation;
result.orientation[0] = pose.ThePose.Orientation.x;
result.orientation[1] = pose.ThePose.Orientation.y;
result.orientation[2] = pose.ThePose.Orientation.z;
result.orientation[3] = pose.ThePose.Orientation.w;
result.angularVelocity[0] = pose.AngularVelocity.x;
result.angularVelocity[1] = pose.AngularVelocity.y;
result.angularVelocity[2] = pose.AngularVelocity.z;
result.flags |= VRDisplayCapabilityFlags::Cap_AngularAcceleration;
result.angularAcceleration[0] = pose.AngularAcceleration.x;
result.angularAcceleration[1] = pose.AngularAcceleration.y;
result.angularAcceleration[2] = pose.AngularAcceleration.z;
} else {
// default to an identity quaternion
result.orientation[3] = 1.0f;
}
if (state.StatusFlags & ovrStatus_PositionTracked) {
result.flags |= VRDisplayCapabilityFlags::Cap_Position;
result.position[0] = pose.ThePose.Position.x;
result.position[1] = pose.ThePose.Position.y;
result.position[2] = pose.ThePose.Position.z;
result.linearVelocity[0] = pose.LinearVelocity.x;
result.linearVelocity[1] = pose.LinearVelocity.y;
result.linearVelocity[2] = pose.LinearVelocity.z;
result.flags |= VRDisplayCapabilityFlags::Cap_LinearAcceleration;
result.linearAcceleration[0] = pose.LinearAcceleration.x;
result.linearAcceleration[1] = pose.LinearAcceleration.y;
result.linearAcceleration[2] = pose.LinearAcceleration.z;
}
result.flags |= VRDisplayCapabilityFlags::Cap_External;
result.flags |= VRDisplayCapabilityFlags::Cap_MountDetection;
result.flags |= VRDisplayCapabilityFlags::Cap_Present;
return result;
}
void
VRDisplayOculus::StartPresentation()
{
if (!CreateD3DObjects()) {
return;
}
mSession->StartPresentation(IntSize(mDisplayInfo.mEyeResolution.width * 2, mDisplayInfo.mEyeResolution.height));
if (!mSession->IsRenderReady()) {
return;
}
if (!mQuadVS) {
if (FAILED(mDevice->CreateVertexShader(sLayerQuadVS.mData, sLayerQuadVS.mLength, nullptr, &mQuadVS))) {
NS_WARNING("Failed to create vertex shader for Oculus");
return;
}
}
if (!mQuadPS) {
if (FAILED(mDevice->CreatePixelShader(sRGBShader.mData, sRGBShader.mLength, nullptr, &mQuadPS))) {
NS_WARNING("Failed to create pixel shader for Oculus");
return;
}
}
CD3D11_BUFFER_DESC cBufferDesc(sizeof(layers::VertexShaderConstants),
D3D11_BIND_CONSTANT_BUFFER,
D3D11_USAGE_DYNAMIC,
D3D11_CPU_ACCESS_WRITE);
if (!mVSConstantBuffer) {
if (FAILED(mDevice->CreateBuffer(&cBufferDesc, nullptr, getter_AddRefs(mVSConstantBuffer)))) {
NS_WARNING("Failed to vertex shader constant buffer for Oculus");
return;
}
}
if (!mPSConstantBuffer) {
cBufferDesc.ByteWidth = sizeof(layers::PixelShaderConstants);
if (FAILED(mDevice->CreateBuffer(&cBufferDesc, nullptr, getter_AddRefs(mPSConstantBuffer)))) {
NS_WARNING("Failed to pixel shader constant buffer for Oculus");
return;
}
}
if (!mLinearSamplerState) {
CD3D11_SAMPLER_DESC samplerDesc(D3D11_DEFAULT);
if (FAILED(mDevice->CreateSamplerState(&samplerDesc, getter_AddRefs(mLinearSamplerState)))) {
NS_WARNING("Failed to create sampler state for Oculus");
return;
}
}
if (!mInputLayout) {
D3D11_INPUT_ELEMENT_DESC layout[] =
{
{ "POSITION", 0, DXGI_FORMAT_R32G32_FLOAT, 0, 0, D3D11_INPUT_PER_VERTEX_DATA, 0 },
};
if (FAILED(mDevice->CreateInputLayout(layout,
sizeof(layout) / sizeof(D3D11_INPUT_ELEMENT_DESC),
sLayerQuadVS.mData,
sLayerQuadVS.mLength,
getter_AddRefs(mInputLayout)))) {
NS_WARNING("Failed to create input layout for Oculus");
return;
}
}
if (!mVertexBuffer) {
Vertex vertices[] = { { { 0.0, 0.0 } },{ { 1.0, 0.0 } },{ { 0.0, 1.0 } },{ { 1.0, 1.0 } } };
CD3D11_BUFFER_DESC bufferDesc(sizeof(vertices), D3D11_BIND_VERTEX_BUFFER);
D3D11_SUBRESOURCE_DATA data;
data.pSysMem = (void*)vertices;
if (FAILED(mDevice->CreateBuffer(&bufferDesc, &data, getter_AddRefs(mVertexBuffer)))) {
NS_WARNING("Failed to create vertex buffer for Oculus");
return;
}
}
memset(&mVSConstants, 0, sizeof(mVSConstants));
memset(&mPSConstants, 0, sizeof(mPSConstants));
}
void
VRDisplayOculus::StopPresentation()
{
if (mSession) {
mSession->StopPresentation();
}
}
bool
VRDisplayOculus::UpdateConstantBuffers()
{
HRESULT hr;
D3D11_MAPPED_SUBRESOURCE resource;
resource.pData = nullptr;
hr = mContext->Map(mVSConstantBuffer, 0, D3D11_MAP_WRITE_DISCARD, 0, &resource);
if (FAILED(hr) || !resource.pData) {
return false;
}
*(VertexShaderConstants*)resource.pData = mVSConstants;
mContext->Unmap(mVSConstantBuffer, 0);
resource.pData = nullptr;
hr = mContext->Map(mPSConstantBuffer, 0, D3D11_MAP_WRITE_DISCARD, 0, &resource);
if (FAILED(hr) || !resource.pData) {
return false;
}
*(PixelShaderConstants*)resource.pData = mPSConstants;
mContext->Unmap(mPSConstantBuffer, 0);
ID3D11Buffer *buffer = mVSConstantBuffer;
mContext->VSSetConstantBuffers(0, 1, &buffer);
buffer = mPSConstantBuffer;
mContext->PSSetConstantBuffers(0, 1, &buffer);
return true;
}
bool
VRDisplayOculus::SubmitFrame(ID3D11Texture2D* aSource,
const IntSize& aSize,
const gfx::Rect& aLeftEyeRect,
const gfx::Rect& aRightEyeRect)
{
if (!CreateD3DObjects()) {
return false;
}
AutoRestoreRenderState restoreState(this);
if (!restoreState.IsSuccess()) {
return false;
}
if (!mSession->IsRenderReady()) {
return false;
}
/**
* XXX - We should resolve fail the promise returned by
* VRDisplay.requestPresent() when the DX11 resources fail allocation
* in VRDisplayOculus::StartPresentation().
* Bailing out here prevents the crash but content should be aware
* that frames are not being presented.
* See Bug 1299309.
**/
RefPtr<CompositingRenderTargetD3D11> surface = mSession->GetNextRenderTarget();
surface->BindRenderTarget(mContext);
Matrix viewMatrix = Matrix::Translation(-1.0, 1.0);
viewMatrix.PreScale(2.0f / float(aSize.width), 2.0f / float(aSize.height));
viewMatrix.PreScale(1.0f, -1.0f);
Matrix4x4 projection = Matrix4x4::From2D(viewMatrix);
projection._33 = 0.0f;
Matrix transform2d;
gfx::Matrix4x4 transform = gfx::Matrix4x4::From2D(transform2d);
D3D11_VIEWPORT viewport;
viewport.MinDepth = 0.0f;
viewport.MaxDepth = 1.0f;
viewport.Width = aSize.width;
viewport.Height = aSize.height;
viewport.TopLeftX = 0;
viewport.TopLeftY = 0;
D3D11_RECT scissor;
scissor.left = 0;
scissor.right = aSize.width;
scissor.top = 0;
scissor.bottom = aSize.height;
memcpy(&mVSConstants.layerTransform, &transform._11, sizeof(mVSConstants.layerTransform));
memcpy(&mVSConstants.projection, &projection._11, sizeof(mVSConstants.projection));
mVSConstants.renderTargetOffset[0] = 0.0f;
mVSConstants.renderTargetOffset[1] = 0.0f;
mVSConstants.layerQuad = Rect(0.0f, 0.0f, aSize.width, aSize.height);
mVSConstants.textureCoords = Rect(0.0f, 1.0f, 1.0f, -1.0f);
mPSConstants.layerOpacity[0] = 1.0f;
ID3D11Buffer* vbuffer = mVertexBuffer;
UINT vsize = sizeof(Vertex);
UINT voffset = 0;
mContext->IASetVertexBuffers(0, 1, &vbuffer, &vsize, &voffset);
mContext->IASetIndexBuffer(nullptr, DXGI_FORMAT_R16_UINT, 0);
mContext->IASetInputLayout(mInputLayout);
mContext->RSSetViewports(1, &viewport);
mContext->RSSetScissorRects(1, &scissor);
mContext->IASetPrimitiveTopology(D3D11_PRIMITIVE_TOPOLOGY_TRIANGLESTRIP);
mContext->VSSetShader(mQuadVS, nullptr, 0);
mContext->PSSetShader(mQuadPS, nullptr, 0);
RefPtr<ID3D11ShaderResourceView> srView;
HRESULT hr = mDevice->CreateShaderResourceView(aSource, nullptr, getter_AddRefs(srView));
if (FAILED(hr)) {
gfxWarning() << "Could not create shader resource view for Oculus: " << hexa(hr);
return false;
}
ID3D11ShaderResourceView* viewPtr = srView.get();
mContext->PSSetShaderResources(0 /* 0 == TexSlot::RGB */, 1, &viewPtr);
// XXX Use Constant from TexSlot in CompositorD3D11.cpp?
ID3D11SamplerState *sampler = mLinearSamplerState;
mContext->PSSetSamplers(0, 1, &sampler);
if (!UpdateConstantBuffers()) {
NS_WARNING("Failed to update constant buffers for Oculus");
return false;
}
mContext->Draw(4, 0);
ovrResult orv = ovr_CommitTextureSwapChain(mSession->Get(), mSession->GetSwapChain());
if (orv != ovrSuccess) {
NS_WARNING("ovr_CommitTextureSwapChain failed.\n");
return false;
}
ovrLayerEyeFov layer;
memset(&layer, 0, sizeof(layer));
layer.Header.Type = ovrLayerType_EyeFov;
layer.Header.Flags = 0;
layer.ColorTexture[0] = mSession->GetSwapChain();
layer.ColorTexture[1] = nullptr;
layer.Fov[0] = mFOVPort[0];
layer.Fov[1] = mFOVPort[1];
layer.Viewport[0].Pos.x = aSize.width * aLeftEyeRect.x;
layer.Viewport[0].Pos.y = aSize.height * aLeftEyeRect.y;
layer.Viewport[0].Size.w = aSize.width * aLeftEyeRect.Width();
layer.Viewport[0].Size.h = aSize.height * aLeftEyeRect.Height();
layer.Viewport[1].Pos.x = aSize.width * aRightEyeRect.x;
layer.Viewport[1].Pos.y = aSize.height * aRightEyeRect.y;
layer.Viewport[1].Size.w = aSize.width * aRightEyeRect.Width();
layer.Viewport[1].Size.h = aSize.height * aRightEyeRect.Height();
const VRHMDSensorState& sensorState = mDisplayInfo.GetSensorState();
gfx::Matrix4x4 matView[2];
memcpy(matView[0].components, sensorState.leftViewMatrix, sizeof(sensorState.leftViewMatrix));
memcpy(matView[1].components, sensorState.rightViewMatrix, sizeof(sensorState.rightViewMatrix));
for (uint32_t i = 0; i < 2; ++i) {
Point3D eyeTranslation;
Quaternion eyeRotation;
Point3D eyeScale;
if (!matView[i].Decompose(eyeTranslation, eyeRotation, eyeScale)) {
NS_WARNING("Failed to decompose eye pose matrix for Oculus");
}
layer.RenderPose[i].Orientation.x = eyeRotation.x;
layer.RenderPose[i].Orientation.y = eyeRotation.y;
layer.RenderPose[i].Orientation.z = eyeRotation.z;
layer.RenderPose[i].Orientation.w = eyeRotation.w;
layer.RenderPose[i].Position.x = eyeTranslation.x;
layer.RenderPose[i].Position.y = eyeTranslation.y;
layer.RenderPose[i].Position.z = eyeTranslation.z;
}
ovrLayerHeader *layers = &layer.Header;
orv = ovr_SubmitFrame(mSession->Get(), mDisplayInfo.mFrameId, nullptr, &layers, 1);
// ovr_SubmitFrame will fail during the Oculus health and safety warning.
// and will start succeeding once the warning has been dismissed by the user.
if (!OVR_UNQUALIFIED_SUCCESS(orv)) {
/**
* We wish to throttle the framerate for any case that the rendered
* result is not visible. In some cases, such as during the Oculus
* "health and safety warning", orv will be > 0 (OVR_SUCCESS but not
* OVR_UNQUALIFIED_SUCCESS) and ovr_SubmitFrame will not block.
* In this case, returning true would have resulted in an unthrottled
* render loop hiting excessive frame rates and consuming resources.
*/
return false;
}
return true;
}
void
VRDisplayOculus::NotifyVSync()
{
mSession->Refresh();
if (mSession->IsTrackingReady()) {
ovrSessionStatus sessionStatus;
ovrResult ovr = ovr_GetSessionStatus(mSession->Get(), &sessionStatus);
mDisplayInfo.mIsConnected = (ovr == ovrSuccess && sessionStatus.HmdPresent);
} else {
mDisplayInfo.mIsConnected = false;
}
VRDisplayHost::NotifyVSync();
}
VRControllerOculus::VRControllerOculus(dom::GamepadHand aHand, uint32_t aDisplayID)
: VRControllerHost(VRDeviceType::Oculus, aHand, aDisplayID)
, mIndexTrigger(0.0f)
, mHandTrigger(0.0f)
, mVibrateThread(nullptr)
, mIsVibrateStopped(false)
{
MOZ_COUNT_CTOR_INHERITED(VRControllerOculus, VRControllerHost);
char* touchID = "";
switch (aHand) {
case dom::GamepadHand::Left:
touchID = "Oculus Touch (Left)";
break;
case dom::GamepadHand::Right:
touchID = "Oculus Touch (Right)";
break;
default:
MOZ_ASSERT(false);
break;
}
mControllerInfo.mControllerName = touchID;
MOZ_ASSERT(kNumOculusButton ==
static_cast<uint32_t>(OculusLeftControllerButtonType::NumButtonType)
&& kNumOculusButton ==
static_cast<uint32_t>(OculusRightControllerButtonType::NumButtonType));
mControllerInfo.mNumButtons = kNumOculusButton;
mControllerInfo.mNumAxes = static_cast<uint32_t>(
OculusControllerAxisType::NumVRControllerAxisType);
mControllerInfo.mNumHaptics = kNumOculusHaptcs;
}
float
VRControllerOculus::GetAxisMove(uint32_t aAxis)
{
return mAxisMove[aAxis];
}
void
VRControllerOculus::SetAxisMove(uint32_t aAxis, float aValue)
{
mAxisMove[aAxis] = aValue;
}
float
VRControllerOculus::GetIndexTrigger()
{
return mIndexTrigger;
}
void
VRControllerOculus::SetIndexTrigger(float aValue)
{
mIndexTrigger = aValue;
}
float
VRControllerOculus::GetHandTrigger()
{
return mHandTrigger;
}
void
VRControllerOculus::SetHandTrigger(float aValue)
{
mHandTrigger = aValue;
}
VRControllerOculus::~VRControllerOculus()
{
MOZ_COUNT_DTOR_INHERITED(VRControllerOculus, VRControllerHost);
}
void
VRControllerOculus::UpdateVibrateHaptic(ovrSession aSession,
uint32_t aHapticIndex,
double aIntensity,
double aDuration,
uint64_t aVibrateIndex,
uint32_t aPromiseID)
{
// UpdateVibrateHaptic() only can be called by mVibrateThread
MOZ_ASSERT(mVibrateThread == NS_GetCurrentThread());
// It has been interrupted by loss focus.
if (mIsVibrateStopped) {
VibrateHapticComplete(aSession, aPromiseID, true);
return;
}
// Avoid the previous vibrate event to override the new one.
if (mVibrateIndex != aVibrateIndex) {
VibrateHapticComplete(aSession, aPromiseID, false);
return;
}
const double duration = (aIntensity == 0) ? 0 : aDuration;
// Vibration amplitude in the [0.0, 1.0] range.
const float amplitude = aIntensity > 1.0 ? 1.0 : aIntensity;
// Vibration is enabled by specifying the frequency.
// Specifying 0.0f will disable the vibration, 0.5f will vibrate at 160Hz,
// and 1.0f will vibrate at 320Hz.
const float frequency = (duration > 0) ? 1.0f : 0.0f;
ovrControllerType hand;
switch (GetHand()) {
case GamepadHand::Left:
hand = ovrControllerType::ovrControllerType_LTouch;
break;
case GamepadHand::Right:
hand = ovrControllerType::ovrControllerType_RTouch;
break;
default:
MOZ_ASSERT(false);
break;
}
// Oculus Touch only can get the response from ovr_SetControllerVibration()
// at the presenting mode.
ovrResult result = ovr_SetControllerVibration(aSession, hand, frequency,
(frequency == 0.0f) ? 0.0f : amplitude);
if (result != ovrSuccess) {
printf_stderr("%s hand ovr_SetControllerVibration skipped.\n",
GamepadHandValues::strings[uint32_t(GetHand())].value);
}
// In Oculus dev doc, it mentions vibration lasts for a maximum of 2.5 seconds
// at ovr_SetControllerVibration(), but we found 2.450 sec is more close to the
// real looping use case.
const double kVibrateRate = 2450.0;
const double remainingTime = (duration > kVibrateRate)
? (duration - kVibrateRate) : duration;
if (remainingTime) {
MOZ_ASSERT(mVibrateThread);
RefPtr<Runnable> runnable =
NewRunnableMethod<ovrSession, uint32_t, double, double, uint64_t, uint32_t>(
"VRControllerOculus::UpdateVibrateHaptic",
this, &VRControllerOculus::UpdateVibrateHaptic, aSession,
aHapticIndex, aIntensity, (duration > kVibrateRate) ? remainingTime : 0, aVibrateIndex, aPromiseID);
NS_DelayedDispatchToCurrentThread(runnable.forget(),
(duration > kVibrateRate) ? kVibrateRate : remainingTime);
} else {
VibrateHapticComplete(aSession, aPromiseID, true);
}
}
void
VRControllerOculus::VibrateHapticComplete(ovrSession aSession, uint32_t aPromiseID,
bool aStop)
{
if (aStop) {
ovrControllerType hand;
switch (GetHand()) {
case GamepadHand::Left:
hand = ovrControllerType::ovrControllerType_LTouch;
break;
case GamepadHand::Right:
hand = ovrControllerType::ovrControllerType_RTouch;
break;
default:
MOZ_ASSERT(false);
break;
}
ovrResult result = ovr_SetControllerVibration(aSession, hand, 0.0f, 0.0f);
if (result != ovrSuccess) {
printf_stderr("%s Haptics skipped.\n",
GamepadHandValues::strings[uint32_t(GetHand())].value);
}
}
VRManager *vm = VRManager::Get();
MOZ_ASSERT(vm);
VRListenerThreadHolder::Loop()->PostTask(NewRunnableMethod<uint32_t>(
"VRManager::NotifyVibrateHapticCompleted",
vm, &VRManager::NotifyVibrateHapticCompleted, aPromiseID));
}
void
VRControllerOculus::VibrateHaptic(ovrSession aSession,
uint32_t aHapticIndex,
double aIntensity,
double aDuration,
uint32_t aPromiseID)
{
// Spinning up the haptics thread at the first haptics call.
if (!mVibrateThread) {
nsresult rv = NS_NewThread(getter_AddRefs(mVibrateThread));
MOZ_ASSERT(mVibrateThread);
if (NS_FAILED(rv)) {
MOZ_ASSERT(false, "Failed to create async thread.");
}
}
++mVibrateIndex;
mIsVibrateStopped = false;
RefPtr<Runnable> runnable =
NewRunnableMethod<ovrSession, uint32_t, double, double, uint64_t, uint32_t>
("VRControllerOculus::UpdateVibrateHaptic",
this, &VRControllerOculus::UpdateVibrateHaptic, aSession,
aHapticIndex, aIntensity, aDuration, mVibrateIndex, aPromiseID);
mVibrateThread->Dispatch(runnable.forget(), NS_DISPATCH_NORMAL);
}
void
VRControllerOculus::StopVibrateHaptic()
{
mIsVibrateStopped = true;
}
/*static*/ already_AddRefed<VRSystemManagerOculus>
VRSystemManagerOculus::Create()
{
MOZ_ASSERT(NS_IsMainThread());
if (!gfxPrefs::VREnabled() || !gfxPrefs::VROculusEnabled())
{
return nullptr;
}
RefPtr<VRSystemManagerOculus> manager = new VRSystemManagerOculus();
return manager.forget();
}
VRSystemManagerOculus::VRSystemManagerOculus()
: mSession(nullptr)
{
}
void
VRSystemManagerOculus::Destroy()
{
Shutdown();
mSession = nullptr;
}
void
VRSystemManagerOculus::Shutdown()
{
if (mSession) {
mSession->StopTracking();
}
RemoveControllers();
if (mDisplay) {
mDisplay->Destroy();
}
mDisplay = nullptr;
}
bool
VRSystemManagerOculus::GetHMDs(nsTArray<RefPtr<VRDisplayHost>>& aHMDResult)
{
if (!mSession) {
mSession = new VROculusSession();
}
mSession->Refresh();
if (mSession->IsQuitTimeoutActive()) {
// We have responded to a ShouldQuit flag set by the Oculus runtime
// and are waiting for a timeout duration to elapse before allowing
// re-initialization of the Oculus OVR lib. We return true in this case
// to prevent further enumeration by other VRSystemManager's such as
// VRSystemManagerOpenVR which would also enumerate the connected Oculus
// HMD, resulting in interference with the Oculus runtime software updates.
mDisplay = nullptr;
return true;
}
if (!mSession->IsTrackingReady()) {
// No HMD connected.
mDisplay = nullptr;
} else if (mDisplay == nullptr) {
// HMD Detected
mDisplay = new VRDisplayOculus(mSession);
}
if (mDisplay) {
aHMDResult.AppendElement(mDisplay);
return true;
}
return false;
}
bool
VRSystemManagerOculus::GetIsPresenting()
{
if (mDisplay) {
VRDisplayInfo displayInfo(mDisplay->GetDisplayInfo());
return displayInfo.GetPresentingGroups() != 0;
}
return false;
}
void
VRSystemManagerOculus::HandleInput()
{
// The session is available after VRDisplay is created
// at GetHMDs().
if (!mSession || !mSession->IsTrackingReady()) {
return;
}
RefPtr<impl::VRControllerOculus> controller;
ovrInputState inputState;
uint32_t axis = 0;
const bool hasInputState = ovr_GetInputState(mSession->Get(), ovrControllerType_Touch,
&inputState) == ovrSuccess;
if (!hasInputState) {
return;
}
for (uint32_t i = 0; i < mOculusController.Length(); ++i) {
controller = mOculusController[i];
const GamepadHand hand = controller->GetHand();
const uint32_t handIdx = static_cast<uint32_t>(hand) - 1;
uint32_t buttonIdx = 0;
switch (hand) {
case dom::GamepadHand::Left:
HandleButtonPress(i, buttonIdx, ovrButton_LThumb, inputState.Buttons,
inputState.Touches);
++buttonIdx;
HandleIndexTriggerPress(i, buttonIdx, inputState.IndexTrigger[handIdx]);
++buttonIdx;
HandleHandTriggerPress(i, buttonIdx, inputState.HandTrigger[handIdx]);
++buttonIdx;
HandleButtonPress(i, buttonIdx, ovrButton_X, inputState.Buttons,
inputState.Touches);
++buttonIdx;
HandleButtonPress(i, buttonIdx, ovrButton_Y, inputState.Buttons,
inputState.Touches);
++buttonIdx;
HandleTouchEvent(i, buttonIdx, ovrTouch_LThumbRest, inputState.Touches);
++buttonIdx;
break;
case dom::GamepadHand::Right:
HandleButtonPress(i, buttonIdx, ovrButton_RThumb, inputState.Buttons,
inputState.Touches);
++buttonIdx;
HandleIndexTriggerPress(i, buttonIdx, inputState.IndexTrigger[handIdx]);
++buttonIdx;
HandleHandTriggerPress(i, buttonIdx, inputState.HandTrigger[handIdx]);
++buttonIdx;
HandleButtonPress(i, buttonIdx, ovrButton_A, inputState.Buttons,
inputState.Touches);
++buttonIdx;
HandleButtonPress(i, buttonIdx, ovrButton_B, inputState.Buttons,
inputState.Touches);
++buttonIdx;
HandleTouchEvent(i, buttonIdx, ovrTouch_RThumbRest, inputState.Touches);
++buttonIdx;
break;
default:
MOZ_ASSERT(false);
break;
}
controller->SetButtonPressed(inputState.Buttons);
controller->SetButtonTouched(inputState.Touches);
axis = static_cast<uint32_t>(OculusControllerAxisType::ThumbstickXAxis);
HandleAxisMove(i, axis, inputState.Thumbstick[i].x);
axis = static_cast<uint32_t>(OculusControllerAxisType::ThumbstickYAxis);
HandleAxisMove(i, axis, -inputState.Thumbstick[i].y);
// Process pose state.
GamepadPoseState poseState;
GetControllerPoseState(handIdx, poseState);
HandlePoseTracking(i, poseState, controller);
}
}
void
VRSystemManagerOculus::GetControllerPoseState(uint32_t aHandIdx, GamepadPoseState& aPoseState,
bool aForceUpdate)
{
ovrTrackingState state = ovr_GetTrackingState(mSession->Get(), 0.0, false);
// HandPoses is ordered by ovrControllerType_LTouch and ovrControllerType_RTouch,
// therefore, we can't get its state by the index of mOculusController.
ovrPoseStatef& pose(state.HandPoses[aHandIdx]);
if (aForceUpdate || state.HandStatusFlags[aHandIdx] & ovrStatus_OrientationTracked) {
aPoseState.flags |= GamepadCapabilityFlags::Cap_Orientation;
aPoseState.orientation[0] = pose.ThePose.Orientation.x;
aPoseState.orientation[1] = pose.ThePose.Orientation.y;
aPoseState.orientation[2] = pose.ThePose.Orientation.z;
aPoseState.orientation[3] = pose.ThePose.Orientation.w;
aPoseState.angularVelocity[0] = pose.AngularVelocity.x;
aPoseState.angularVelocity[1] = pose.AngularVelocity.y;
aPoseState.angularVelocity[2] = pose.AngularVelocity.z;
aPoseState.flags |= GamepadCapabilityFlags::Cap_AngularAcceleration;
aPoseState.angularAcceleration[0] = pose.AngularAcceleration.x;
aPoseState.angularAcceleration[1] = pose.AngularAcceleration.y;
aPoseState.angularAcceleration[2] = pose.AngularAcceleration.z;
aPoseState.isOrientationValid = true;
}
if (aForceUpdate || state.HandStatusFlags[aHandIdx] & ovrStatus_PositionTracked) {
aPoseState.flags |= GamepadCapabilityFlags::Cap_Position;
aPoseState.position[0] = pose.ThePose.Position.x;
aPoseState.position[1] = pose.ThePose.Position.y;
aPoseState.position[2] = pose.ThePose.Position.z;
aPoseState.linearVelocity[0] = pose.LinearVelocity.x;
aPoseState.linearVelocity[1] = pose.LinearVelocity.y;
aPoseState.linearVelocity[2] = pose.LinearVelocity.z;
aPoseState.flags |= GamepadCapabilityFlags::Cap_LinearAcceleration;
aPoseState.linearAcceleration[0] = pose.LinearAcceleration.x;
aPoseState.linearAcceleration[1] = pose.LinearAcceleration.y;
aPoseState.linearAcceleration[2] = pose.LinearAcceleration.z;
float eyeHeight = ovr_GetFloat(mSession->Get(), OVR_KEY_EYE_HEIGHT, OVR_DEFAULT_EYE_HEIGHT);
aPoseState.position[1] -= eyeHeight;
aPoseState.isPositionValid = true;
}
}
void
VRSystemManagerOculus::HandleButtonPress(uint32_t aControllerIdx,
uint32_t aButton,
uint64_t aButtonMask,
uint64_t aButtonPressed,
uint64_t aButtonTouched)
{
RefPtr<impl::VRControllerOculus> controller(mOculusController[aControllerIdx]);
MOZ_ASSERT(controller);
const uint64_t pressedDiff = (controller->GetButtonPressed() ^ aButtonPressed);
const uint64_t touchedDiff = (controller->GetButtonTouched() ^ aButtonTouched);
if (!pressedDiff && !touchedDiff) {
return;
}
if (pressedDiff & aButtonMask ||
touchedDiff & aButtonMask) {
// diff & (aButtonPressed, aButtonTouched) would be true while a new button pressed or
// touched event, otherwise it is an old event and needs to notify
// the button has been released.
NewButtonEvent(aControllerIdx, aButton, aButtonMask & aButtonPressed,
aButtonMask & aButtonTouched,
(aButtonMask & aButtonPressed) ? 1.0L : 0.0L);
}
}
void
VRSystemManagerOculus::HandleIndexTriggerPress(uint32_t aControllerIdx,
uint32_t aButton,
float aValue)
{
RefPtr<impl::VRControllerOculus> controller(mOculusController[aControllerIdx]);
MOZ_ASSERT(controller);
const float oldValue = controller->GetIndexTrigger();
// We prefer to let developers to set their own threshold for the adjustment.
// Therefore, we don't check ButtonPressed and ButtonTouched with TouchMask here.
// we just check the button value is larger than the threshold value or not.
const float threshold = gfxPrefs::VRControllerTriggerThreshold();
// Avoid sending duplicated events in IPC channels.
if (oldValue != aValue) {
NewButtonEvent(aControllerIdx, aButton, aValue > threshold,
aValue > threshold, aValue);
controller->SetIndexTrigger(aValue);
}
}
void
VRSystemManagerOculus::HandleHandTriggerPress(uint32_t aControllerIdx,
uint32_t aButton,
float aValue)
{
RefPtr<impl::VRControllerOculus> controller(mOculusController[aControllerIdx]);
MOZ_ASSERT(controller);
const float oldValue = controller->GetHandTrigger();
// We prefer to let developers to set their own threshold for the adjustment.
// Therefore, we don't check ButtonPressed and ButtonTouched with TouchMask here.
// we just check the button value is larger than the threshold value or not.
const float threshold = gfxPrefs::VRControllerTriggerThreshold();
// Avoid sending duplicated events in IPC channels.
if (oldValue != aValue) {
NewButtonEvent(aControllerIdx, aButton, aValue > threshold,
aValue > threshold, aValue);
controller->SetHandTrigger(aValue);
}
}
void
VRSystemManagerOculus::HandleTouchEvent(uint32_t aControllerIdx, uint32_t aButton,
uint64_t aTouchMask, uint64_t aButtonTouched)
{
RefPtr<impl::VRControllerOculus> controller(mOculusController[aControllerIdx]);
MOZ_ASSERT(controller);
const uint64_t touchedDiff = (controller->GetButtonTouched() ^ aButtonTouched);
if (touchedDiff & aTouchMask) {
NewButtonEvent(aControllerIdx, aButton, false, aTouchMask & aButtonTouched, 0.0f);
}
}
void
VRSystemManagerOculus::HandleAxisMove(uint32_t aControllerIdx, uint32_t aAxis,
float aValue)
{
RefPtr<impl::VRControllerOculus> controller(mOculusController[aControllerIdx]);
MOZ_ASSERT(controller);
float value = aValue;
if (abs(aValue) < 0.0000009f) {
value = 0.0f; // Clear noise signal
}
if (controller->GetAxisMove(aAxis) != value) {
NewAxisMove(aControllerIdx, aAxis, value);
controller->SetAxisMove(aAxis, value);
}
}
void
VRSystemManagerOculus::HandlePoseTracking(uint32_t aControllerIdx,
const GamepadPoseState& aPose,
VRControllerHost* aController)
{
MOZ_ASSERT(aController);
if (aPose != aController->GetPose()) {
aController->SetPose(aPose);
NewPoseState(aControllerIdx, aPose);
}
}
void
VRSystemManagerOculus::VibrateHaptic(uint32_t aControllerIdx,
uint32_t aHapticIndex,
double aIntensity,
double aDuration,
uint32_t aPromiseID)
{
// The session is available after VRDisplay is created
// at GetHMDs().
if (!mSession || !mSession->IsTrackingReady()) {
return;
}
RefPtr<impl::VRControllerOculus> controller = mOculusController[aControllerIdx];
MOZ_ASSERT(controller);
controller->VibrateHaptic(mSession->Get(), aHapticIndex, aIntensity, aDuration, aPromiseID);
}
void
VRSystemManagerOculus::StopVibrateHaptic(uint32_t aControllerIdx)
{
// The session is available after VRDisplay is created
// at GetHMDs().
if (!mSession || !mSession->IsTrackingReady() ||
(aControllerIdx >= mOculusController.Length())) {
return;
}
RefPtr<impl::VRControllerOculus> controller = mOculusController[aControllerIdx];
MOZ_ASSERT(controller);
controller->StopVibrateHaptic();
}
void
VRSystemManagerOculus::GetControllers(nsTArray<RefPtr<VRControllerHost>>&
aControllerResult)
{
aControllerResult.Clear();
for (uint32_t i = 0; i < mOculusController.Length(); ++i) {
aControllerResult.AppendElement(mOculusController[i]);
}
}
void
VRSystemManagerOculus::ScanForControllers()
{
// mSession is available after VRDisplay is created
// at GetHMDs().
if (!mSession || !mSession->IsTrackingReady()) {
return;
}
ovrInputState inputState;
bool hasInputState = ovr_GetInputState(mSession->Get(), ovrControllerType_Touch,
&inputState) == ovrSuccess;
if (!hasInputState) {
return;
}
ovrControllerType activeControllerArray[2];
uint32_t newControllerCount = 0;
if (inputState.ControllerType & ovrControllerType_LTouch) {
activeControllerArray[newControllerCount] = ovrControllerType_LTouch;
++newControllerCount;
}
if (inputState.ControllerType & ovrControllerType_RTouch) {
activeControllerArray[newControllerCount] = ovrControllerType_RTouch;
++newControllerCount;
}
if (newControllerCount != mControllerCount) {
RemoveControllers();
// Re-adding controllers to VRControllerManager.
for (uint32_t i = 0; i < newControllerCount; ++i) {
GamepadHand hand;
switch (activeControllerArray[i]) {
case ovrControllerType::ovrControllerType_LTouch:
hand = GamepadHand::Left;
break;
case ovrControllerType::ovrControllerType_RTouch:
hand = GamepadHand::Right;
break;
}
RefPtr<VRControllerOculus> oculusController = new VRControllerOculus(hand,
mDisplay->GetDisplayInfo().GetDisplayID());
mOculusController.AppendElement(oculusController);
// Not already present, add it.
AddGamepad(oculusController->GetControllerInfo());
// Process pose state.
// We wanna Oculus Touch has the right position when it shows up,
// so we force to update the pose no matter if it has OrientationTracked
// or PositionTracked.
const uint32_t handIdx = static_cast<uint32_t>(hand) - 1;
GamepadPoseState poseState;
GetControllerPoseState(handIdx, poseState, true);
HandlePoseTracking(i, poseState, oculusController);
++mControllerCount;
}
}
}
void
VRSystemManagerOculus::RemoveControllers()
{
// controller count is changed, removing the existing gamepads first.
for (uint32_t i = 0; i < mOculusController.Length(); ++i) {
RemoveGamepad(i);
}
mOculusController.Clear();
mControllerCount = 0;
}
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