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gecko-dev/gfx/vr/gfxVROculus.cpp

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/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 2 -*-
* 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 "ipc/VRLayerParent.h"
#include "mozilla/gfx/Quaternion.h"
#include <d3d11.h>
#include "CompositorD3D11.h"
#include "TextureD3D11.h"
#include "gfxVROculus.h"
#include "mozilla/layers/CompositorThread.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_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_GetRenderDesc ovr_GetRenderDesc = 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 15
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)
{
}
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;
mPresentationSize = aSize;
Refresh();
mPresentationStart = TimeStamp::Now();
}
}
void
VROculusSession::StopPresentation()
{
if (mPresenting) {
mLastPresentationEnd = TimeStamp::Now();
mPresenting = false;
Telemetry::Accumulate(Telemetry::WEBVR_USERS_VIEW_IN, 1);
Telemetry::AccumulateTimeDelta(Telemetry::WEBVR_TIME_SPENT_VIEWING_IN_OCULUS,
mPresentationStart);
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()
{
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) {
ovrLayerEyeFov layer;
memset(&layer, 0, sizeof(layer));
layer.Header.Type = ovrLayerType_Disabled;
ovrLayerHeader *layers = &layer.Header;
ovr_SubmitFrame(mSession, 0, nullptr, &layers, 1);
}
}
}
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_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_GetRenderDesc);
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 parameters and create the mesh
for (uint32_t eye = 0; eye < VRDisplayInfo::NumEyes; eye++) {
ovrEyeRenderDesc renderDesc = ovr_GetRenderDesc(mSession->Get(), (ovrEyeType)eye, mFOVPort[eye]);
// As of Oculus 0.6.0, the HmdToEyeOffset values are correct and don't need to be negated.
mDisplayInfo.mEyeTranslation[eye] = Point3D(renderDesc.HmdToEyeOffset.x, renderDesc.HmdToEyeOffset.y, renderDesc.HmdToEyeOffset.z);
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);
UpdateStageParameters();
}
VRDisplayOculus::~VRDisplayOculus() {
Destroy();
MOZ_COUNT_DTOR_INHERITED(VRDisplayOculus, VRDisplayHost);
}
void
VRDisplayOculus::Destroy()
{
StopPresentation();
mSession = nullptr;
}
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()) {
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.inputFrameID = mDisplayInfo.mFrameId;
result.position[1] -= mEyeHeight;
mDisplayInfo.mLastSensorState[result.inputFrameID % kVRMaxLatencyFrames] = result;
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;
}
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()
{
mSession->StartPresentation(IntSize(mDisplayInfo.mEyeResolution.width * 2, mDisplayInfo.mEyeResolution.height));
if (!mSession->IsRenderReady()) {
return;
}
if (!mDevice) {
mDevice = gfx::DeviceManagerDx::Get()->GetCompositorDevice();
if (!mDevice) {
NS_WARNING("Failed to get a D3D11Device for Oculus");
return;
}
}
if (!mContext) {
mDevice->GetImmediateContext(getter_AddRefs(mContext));
if (!mContext) {
NS_WARNING("Failed to get immediate context for Oculus");
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(TextureSourceD3D11* aSource,
const IntSize& aSize,
const gfx::Rect& aLeftEyeRect,
const gfx::Rect& aRightEyeRect)
{
if (!mSession->IsRenderReady() || !mDevice || !mContext) {
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);
ID3D11ShaderResourceView* srView = aSource->GetShaderResourceView();
if (!srView) {
NS_WARNING("Failed to get SRV for Oculus");
return false;
}
mContext->PSSetShaderResources(0 /* 0 == TexSlot::RGB */, 1, &srView);
// 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 Point3D& l = mDisplayInfo.mEyeTranslation[0];
const Point3D& r = mDisplayInfo.mEyeTranslation[1];
const ovrVector3f hmdToEyeViewOffset[2] = { { l.x, l.y, l.z },
{ r.x, r.y, r.z } };
const VRHMDSensorState& sensorState = mDisplayInfo.GetSensorState();
for (uint32_t i = 0; i < 2; ++i) {
Quaternion o(sensorState.orientation[0],
sensorState.orientation[1],
sensorState.orientation[2],
sensorState.orientation[3]);
Point3D vo(hmdToEyeViewOffset[i].x, hmdToEyeViewOffset[i].y, hmdToEyeViewOffset[i].z);
Point3D p = o.RotatePoint(vo);
layer.RenderPose[i].Orientation.x = o.x;
layer.RenderPose[i].Orientation.y = o.y;
layer.RenderPose[i].Orientation.z = o.z;
layer.RenderPose[i].Orientation.w = o.w;
layer.RenderPose[i].Position.x = p.x + sensorState.position[0];
layer.RenderPose[i].Position.y = p.y + sensorState.position[1];
layer.RenderPose[i].Position.z = p.z + sensorState.position[2];
}
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);
CompositorThreadHolder::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()) {
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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