mirror of
https://github.com/classilla/tenfourfox.git
synced 2024-06-16 14:29:46 +00:00
566 lines
18 KiB
C++
566 lines
18 KiB
C++
/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 2 -*-
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include <math.h>
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#if defined(_WIN32)
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#include <windows.h>
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#endif
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#include "prlink.h"
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#include "prmem.h"
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#include "prenv.h"
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#include "gfxPrefs.h"
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#include "nsString.h"
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#include "mozilla/Preferences.h"
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#include "gfxVROculus050.h"
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#include "nsServiceManagerUtils.h"
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#include "nsIScreenManager.h"
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#ifndef M_PI
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# define M_PI 3.14159265358979323846
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#endif
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using namespace ovr050;
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using namespace mozilla::gfx;
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using namespace mozilla::gfx::impl;
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namespace {
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#ifdef OVR_CAPI_050_LIMITED_MOZILLA
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static pfn_ovr_Initialize ovr_Initialize = nullptr;
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static pfn_ovr_Shutdown ovr_Shutdown = nullptr;
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static pfn_ovrHmd_Detect ovrHmd_Detect = nullptr;
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static pfn_ovrHmd_Create ovrHmd_Create = nullptr;
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static pfn_ovrHmd_Destroy ovrHmd_Destroy = nullptr;
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static pfn_ovrHmd_CreateDebug ovrHmd_CreateDebug = nullptr;
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static pfn_ovrHmd_GetLastError ovrHmd_GetLastError = nullptr;
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static pfn_ovrHmd_AttachToWindow ovrHmd_AttachToWindow = nullptr;
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static pfn_ovrHmd_GetEnabledCaps ovrHmd_GetEnabledCaps = nullptr;
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static pfn_ovrHmd_SetEnabledCaps ovrHmd_SetEnabledCaps = nullptr;
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static pfn_ovrHmd_ConfigureTracking ovrHmd_ConfigureTracking = nullptr;
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static pfn_ovrHmd_RecenterPose ovrHmd_RecenterPose = nullptr;
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static pfn_ovrHmd_GetTrackingState ovrHmd_GetTrackingState = nullptr;
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static pfn_ovrHmd_GetFovTextureSize ovrHmd_GetFovTextureSize = nullptr;
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static pfn_ovrHmd_GetRenderDesc ovrHmd_GetRenderDesc = nullptr;
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static pfn_ovrHmd_CreateDistortionMesh ovrHmd_CreateDistortionMesh = nullptr;
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static pfn_ovrHmd_DestroyDistortionMesh ovrHmd_DestroyDistortionMesh = nullptr;
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static pfn_ovrHmd_GetRenderScaleAndOffset ovrHmd_GetRenderScaleAndOffset = nullptr;
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static pfn_ovrHmd_GetFrameTiming ovrHmd_GetFrameTiming = nullptr;
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static pfn_ovrHmd_BeginFrameTiming ovrHmd_BeginFrameTiming = nullptr;
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static pfn_ovrHmd_EndFrameTiming ovrHmd_EndFrameTiming = nullptr;
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static pfn_ovrHmd_ResetFrameTiming ovrHmd_ResetFrameTiming = nullptr;
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static pfn_ovrHmd_GetEyePoses ovrHmd_GetEyePoses = nullptr;
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static pfn_ovrHmd_GetHmdPosePerEye ovrHmd_GetHmdPosePerEye = nullptr;
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static pfn_ovrHmd_GetEyeTimewarpMatrices ovrHmd_GetEyeTimewarpMatrices = nullptr;
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static pfn_ovrMatrix4f_Projection ovrMatrix4f_Projection = nullptr;
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static pfn_ovrMatrix4f_OrthoSubProjection ovrMatrix4f_OrthoSubProjection = nullptr;
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static pfn_ovr_GetTimeInSeconds ovr_GetTimeInSeconds = nullptr;
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#ifdef HAVE_64BIT_BUILD
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#define BUILD_BITS 64
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#else
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#define BUILD_BITS 32
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#endif
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#define LIBOVR_PRODUCT_VERSION 0
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#define LIBOVR_MAJOR_VERSION 5
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#define LIBOVR_MINOR_VERSION 0
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static bool
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InitializeOculusCAPI()
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{
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static PRLibrary *ovrlib = nullptr;
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if (!ovrlib) {
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nsTArray<nsCString> libSearchPaths;
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nsCString libName;
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nsCString searchPath;
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#if defined(_WIN32)
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static const char dirSep = '\\';
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#else
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static const char dirSep = '/';
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#endif
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#if defined(_WIN32)
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static const int pathLen = 260;
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searchPath.SetCapacity(pathLen);
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int realLen = ::GetSystemDirectoryA(searchPath.BeginWriting(), pathLen);
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if (realLen != 0 && realLen < pathLen) {
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searchPath.SetLength(realLen);
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libSearchPaths.AppendElement(searchPath);
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}
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libName.AppendPrintf("LibOVRRT%d_%d_%d.dll", BUILD_BITS, LIBOVR_PRODUCT_VERSION, LIBOVR_MAJOR_VERSION);
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#elif defined(__APPLE__)
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searchPath.Truncate();
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searchPath.AppendPrintf("/Library/Frameworks/LibOVRRT_%d.framework/Versions/%d", LIBOVR_PRODUCT_VERSION, LIBOVR_MAJOR_VERSION);
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libSearchPaths.AppendElement(searchPath);
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if (PR_GetEnv("HOME")) {
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searchPath.Truncate();
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searchPath.AppendPrintf("%s/Library/Frameworks/LibOVRRT_%d.framework/Versions/%d", PR_GetEnv("HOME"), LIBOVR_PRODUCT_VERSION, LIBOVR_MAJOR_VERSION);
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libSearchPaths.AppendElement(searchPath);
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}
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// The following will match the va_list overload of AppendPrintf if the product version is 0
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// That's bad times.
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//libName.AppendPrintf("LibOVRRT_%d", LIBOVR_PRODUCT_VERSION);
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libName.Append("LibOVRRT_");
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libName.AppendInt(LIBOVR_PRODUCT_VERSION);
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#else
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libSearchPaths.AppendElement(nsCString("/usr/local/lib"));
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libSearchPaths.AppendElement(nsCString("/usr/lib"));
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libName.AppendPrintf("libOVRRT%d_%d.so.%d", BUILD_BITS, LIBOVR_PRODUCT_VERSION, LIBOVR_MAJOR_VERSION);
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#endif
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// If the pref is present, we override libName
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nsAdoptingCString prefLibPath = mozilla::Preferences::GetCString("dom.vr.ovr_lib_path");
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if (prefLibPath && prefLibPath.get()) {
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libSearchPaths.InsertElementsAt(0, 1, prefLibPath);
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}
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nsAdoptingCString prefLibName = mozilla::Preferences::GetCString("dom.vr.ovr_lib_name");
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if (prefLibName && prefLibName.get()) {
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libName.Assign(prefLibName);
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}
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// search the path/module dir
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libSearchPaths.InsertElementsAt(0, 1, nsCString());
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// If the env var is present, we override libName
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if (PR_GetEnv("OVR_LIB_PATH")) {
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searchPath = PR_GetEnv("OVR_LIB_PATH");
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libSearchPaths.InsertElementsAt(0, 1, searchPath);
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}
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if (PR_GetEnv("OVR_LIB_NAME")) {
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libName = PR_GetEnv("OVR_LIB_NAME");
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}
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for (uint32_t i = 0; i < libSearchPaths.Length(); ++i) {
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nsCString& libPath = libSearchPaths[i];
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nsCString fullName;
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if (libPath.Length() == 0) {
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fullName.Assign(libName);
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} else {
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fullName.AppendPrintf("%s%c%s", libPath.BeginReading(), dirSep, libName.BeginReading());
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}
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ovrlib = PR_LoadLibrary(fullName.BeginReading());
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if (ovrlib)
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break;
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}
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if (!ovrlib) {
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printf_stderr("Failed to load Oculus VR library!\n");
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return false;
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}
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}
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// was it already initialized?
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if (ovr_Initialize)
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return true;
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#define REQUIRE_FUNCTION(_x) do { \
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*(void **)&_x = (void *) PR_FindSymbol(ovrlib, #_x); \
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if (!_x) { printf_stderr(#_x " symbol missing\n"); goto fail; } \
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} while (0)
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REQUIRE_FUNCTION(ovr_Initialize);
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REQUIRE_FUNCTION(ovr_Shutdown);
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REQUIRE_FUNCTION(ovrHmd_Detect);
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REQUIRE_FUNCTION(ovrHmd_Create);
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REQUIRE_FUNCTION(ovrHmd_Destroy);
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REQUIRE_FUNCTION(ovrHmd_CreateDebug);
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REQUIRE_FUNCTION(ovrHmd_GetLastError);
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REQUIRE_FUNCTION(ovrHmd_AttachToWindow);
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REQUIRE_FUNCTION(ovrHmd_GetEnabledCaps);
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REQUIRE_FUNCTION(ovrHmd_SetEnabledCaps);
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REQUIRE_FUNCTION(ovrHmd_ConfigureTracking);
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REQUIRE_FUNCTION(ovrHmd_RecenterPose);
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REQUIRE_FUNCTION(ovrHmd_GetTrackingState);
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REQUIRE_FUNCTION(ovrHmd_GetFovTextureSize);
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REQUIRE_FUNCTION(ovrHmd_GetRenderDesc);
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REQUIRE_FUNCTION(ovrHmd_CreateDistortionMesh);
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REQUIRE_FUNCTION(ovrHmd_DestroyDistortionMesh);
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REQUIRE_FUNCTION(ovrHmd_GetRenderScaleAndOffset);
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REQUIRE_FUNCTION(ovrHmd_GetFrameTiming);
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REQUIRE_FUNCTION(ovrHmd_BeginFrameTiming);
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REQUIRE_FUNCTION(ovrHmd_EndFrameTiming);
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REQUIRE_FUNCTION(ovrHmd_ResetFrameTiming);
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REQUIRE_FUNCTION(ovrHmd_GetEyePoses);
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REQUIRE_FUNCTION(ovrHmd_GetHmdPosePerEye);
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REQUIRE_FUNCTION(ovrHmd_GetEyeTimewarpMatrices);
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REQUIRE_FUNCTION(ovrMatrix4f_Projection);
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REQUIRE_FUNCTION(ovrMatrix4f_OrthoSubProjection);
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REQUIRE_FUNCTION(ovr_GetTimeInSeconds);
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#undef REQUIRE_FUNCTION
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return true;
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fail:
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ovr_Initialize = nullptr;
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return false;
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}
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#else
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// we're statically linked; it's available
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static bool InitializeOculusCAPI()
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{
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return true;
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}
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#endif
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ovrFovPort
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ToFovPort(const VRFieldOfView& aFOV)
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{
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ovrFovPort fovPort;
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fovPort.LeftTan = tan(aFOV.leftDegrees * M_PI / 180.0);
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fovPort.RightTan = tan(aFOV.rightDegrees * M_PI / 180.0);
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fovPort.UpTan = tan(aFOV.upDegrees * M_PI / 180.0);
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fovPort.DownTan = tan(aFOV.downDegrees * M_PI / 180.0);
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return fovPort;
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}
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VRFieldOfView
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FromFovPort(const ovrFovPort& aFOV)
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{
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VRFieldOfView fovInfo;
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fovInfo.leftDegrees = atan(aFOV.LeftTan) * 180.0 / M_PI;
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fovInfo.rightDegrees = atan(aFOV.RightTan) * 180.0 / M_PI;
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fovInfo.upDegrees = atan(aFOV.UpTan) * 180.0 / M_PI;
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fovInfo.downDegrees = atan(aFOV.DownTan) * 180.0 / M_PI;
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return fovInfo;
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}
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} // anonymous namespace
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HMDInfoOculus050::HMDInfoOculus050(ovrHmd aHMD)
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: VRHMDInfo(VRHMDType::Oculus050)
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, mHMD(aHMD)
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, mStartCount(0)
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{
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MOZ_ASSERT(sizeof(HMDInfoOculus050::DistortionVertex) == sizeof(VRDistortionVertex),
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"HMDInfoOculus050::DistortionVertex must match the size of VRDistortionVertex");
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MOZ_COUNT_CTOR_INHERITED(HMDInfoOculus050, VRHMDInfo);
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mDeviceName.AssignLiteral("Oculus VR HMD (0.5.0)");
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mSupportedSensorBits = 0;
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if (mHMD->TrackingCaps & ovrTrackingCap_Orientation)
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mSupportedSensorBits |= State_Orientation;
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if (mHMD->TrackingCaps & ovrTrackingCap_Position)
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mSupportedSensorBits |= State_Position;
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mRecommendedEyeFOV[Eye_Left] = FromFovPort(mHMD->DefaultEyeFov[ovrEye_Left]);
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mRecommendedEyeFOV[Eye_Right] = FromFovPort(mHMD->DefaultEyeFov[ovrEye_Right]);
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mMaximumEyeFOV[Eye_Left] = FromFovPort(mHMD->MaxEyeFov[ovrEye_Left]);
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mMaximumEyeFOV[Eye_Right] = FromFovPort(mHMD->MaxEyeFov[ovrEye_Right]);
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SetFOV(mRecommendedEyeFOV[Eye_Left], mRecommendedEyeFOV[Eye_Right], 0.01, 10000.0);
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nsCOMPtr<nsIScreenManager> screenmgr = do_GetService("@mozilla.org/gfx/screenmanager;1");
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if (screenmgr) {
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#if 1
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if (getenv("FAKE_OCULUS_SCREEN")) {
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const char *env = getenv("FAKE_OCULUS_SCREEN");
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nsresult err;
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int32_t xcoord = nsCString(env).ToInteger(&err);
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if (err != NS_OK) xcoord = 0;
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mScreen = VRHMDManager::MakeFakeScreen(xcoord, 0, 1920, 1080);
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} else
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#endif
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{
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screenmgr->ScreenForRect(mHMD->WindowsPos.x, mHMD->WindowsPos.y,
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mHMD->Resolution.w, mHMD->Resolution.h,
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getter_AddRefs(mScreen));
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}
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}
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}
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void
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HMDInfoOculus050::Destroy()
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{
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if (mHMD) {
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ovrHmd_Destroy(mHMD);
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mHMD = nullptr;
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}
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}
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bool
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HMDInfoOculus050::SetFOV(const VRFieldOfView& aFOVLeft, const VRFieldOfView& aFOVRight,
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double zNear, double zFar)
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{
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float pixelsPerDisplayPixel = 1.0;
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ovrSizei texSize[2];
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uint32_t caps = ovrDistortionCap_Chromatic | ovrDistortionCap_Vignette; // XXX TODO add TimeWarp
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// get eye parameters and create the mesh
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for (uint32_t eye = 0; eye < NumEyes; eye++) {
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mEyeFOV[eye] = eye == 0 ? aFOVLeft : aFOVRight;
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mFOVPort[eye] = ToFovPort(mEyeFOV[eye]);
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ovrEyeRenderDesc renderDesc = ovrHmd_GetRenderDesc(mHMD, (ovrEyeType) eye, mFOVPort[eye]);
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// these values are negated so that content can add the adjustment to its camera position,
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// instead of subtracting
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mEyeTranslation[eye] = Point3D(-renderDesc.HmdToEyeViewOffset.x, -renderDesc.HmdToEyeViewOffset.y, -renderDesc.HmdToEyeViewOffset.z);
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// note that we are using a right-handed coordinate system here, to match CSS
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mEyeProjectionMatrix[eye] = mEyeFOV[eye].ConstructProjectionMatrix(zNear, zFar, true);
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texSize[eye] = ovrHmd_GetFovTextureSize(mHMD, (ovrEyeType) eye, mFOVPort[eye], pixelsPerDisplayPixel);
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ovrDistortionMesh mesh;
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bool ok = ovrHmd_CreateDistortionMesh(mHMD, (ovrEyeType) eye, mFOVPort[eye], caps, &mesh);
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if (!ok)
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return false;
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mDistortionMesh[eye].mVertices.SetLength(mesh.VertexCount);
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mDistortionMesh[eye].mIndices.SetLength(mesh.IndexCount);
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ovrDistortionVertex *srcv = mesh.pVertexData;
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HMDInfoOculus050::DistortionVertex *destv = reinterpret_cast<HMDInfoOculus050::DistortionVertex*>(mDistortionMesh[eye].mVertices.Elements());
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memset(destv, 0, mesh.VertexCount * sizeof(VRDistortionVertex));
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for (uint32_t i = 0; i < mesh.VertexCount; ++i) {
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destv[i].pos[0] = srcv[i].ScreenPosNDC.x;
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destv[i].pos[1] = srcv[i].ScreenPosNDC.y;
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destv[i].texR[0] = srcv[i].TanEyeAnglesR.x;
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destv[i].texR[1] = srcv[i].TanEyeAnglesR.y;
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destv[i].texG[0] = srcv[i].TanEyeAnglesG.x;
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destv[i].texG[1] = srcv[i].TanEyeAnglesG.y;
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destv[i].texB[0] = srcv[i].TanEyeAnglesB.x;
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destv[i].texB[1] = srcv[i].TanEyeAnglesB.y;
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destv[i].genericAttribs[0] = srcv[i].VignetteFactor;
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destv[i].genericAttribs[1] = srcv[i].TimeWarpFactor;
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}
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memcpy(mDistortionMesh[eye].mIndices.Elements(), mesh.pIndexData, mesh.IndexCount * sizeof(uint16_t));
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ovrHmd_DestroyDistortionMesh(&mesh);
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}
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// take the max of both for eye resolution
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mEyeResolution.width = std::max(texSize[Eye_Left].w, texSize[Eye_Right].w);
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mEyeResolution.height = std::max(texSize[Eye_Left].h, texSize[Eye_Right].h);
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mConfiguration.hmdType = mType;
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mConfiguration.value = 0;
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mConfiguration.fov[0] = aFOVLeft;
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mConfiguration.fov[1] = aFOVRight;
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return true;
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}
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void
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HMDInfoOculus050::FillDistortionConstants(uint32_t whichEye,
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const IntSize& textureSize,
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const IntRect& eyeViewport,
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const Size& destViewport,
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const Rect& destRect,
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VRDistortionConstants& values)
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{
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ovrSizei texSize = { textureSize.width, textureSize.height };
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ovrRecti eyePort = { { eyeViewport.x, eyeViewport.y }, { eyeViewport.width, eyeViewport.height } };
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ovrVector2f scaleOut[2];
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ovrHmd_GetRenderScaleAndOffset(mFOVPort[whichEye], texSize, eyePort, scaleOut);
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values.eyeToSourceScaleAndOffset[0] = scaleOut[1].x;
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values.eyeToSourceScaleAndOffset[1] = scaleOut[1].y;
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values.eyeToSourceScaleAndOffset[2] = scaleOut[0].x;
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values.eyeToSourceScaleAndOffset[3] = scaleOut[0].y;
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// These values are in clip space [-1..1] range, but we're providing
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// scaling in the 0..2 space for sanity.
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// this is the destRect in clip space
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float x0 = destRect.x / destViewport.width * 2.0 - 1.0;
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float x1 = (destRect.x + destRect.width) / destViewport.width * 2.0 - 1.0;
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float y0 = destRect.y / destViewport.height * 2.0 - 1.0;
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float y1 = (destRect.y + destRect.height) / destViewport.height * 2.0 - 1.0;
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// offset
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values.destinationScaleAndOffset[0] = (x0+x1) / 2.0;
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values.destinationScaleAndOffset[1] = (y0+y1) / 2.0;
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// scale
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values.destinationScaleAndOffset[2] = destRect.width / destViewport.width;
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values.destinationScaleAndOffset[3] = destRect.height / destViewport.height;
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}
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bool
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HMDInfoOculus050::StartSensorTracking()
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{
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if (mStartCount == 0) {
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bool ok = ovrHmd_ConfigureTracking(mHMD, ovrTrackingCap_Orientation | ovrTrackingCap_Position, 0);
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if (!ok)
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return false;
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}
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mStartCount++;
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return true;
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}
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void
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HMDInfoOculus050::StopSensorTracking()
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{
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if (--mStartCount == 0) {
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ovrHmd_ConfigureTracking(mHMD, 0, 0);
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}
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}
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void
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HMDInfoOculus050::ZeroSensor()
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|
{
|
|
ovrHmd_RecenterPose(mHMD);
|
|
}
|
|
|
|
VRHMDSensorState
|
|
HMDInfoOculus050::GetSensorState(double timeOffset)
|
|
{
|
|
VRHMDSensorState result;
|
|
result.Clear();
|
|
|
|
// XXX this is the wrong time base for timeOffset; we need to figure out how to synchronize
|
|
// the Oculus time base and the browser one.
|
|
ovrTrackingState state = ovrHmd_GetTrackingState(mHMD, ovr_GetTimeInSeconds() + timeOffset);
|
|
ovrPoseStatef& pose(state.HeadPose);
|
|
|
|
result.timestamp = pose.TimeInSeconds;
|
|
|
|
if (state.StatusFlags & ovrStatus_OrientationTracked) {
|
|
result.flags |= State_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.angularAcceleration[0] = pose.AngularAcceleration.x;
|
|
result.angularAcceleration[1] = pose.AngularAcceleration.y;
|
|
result.angularAcceleration[2] = pose.AngularAcceleration.z;
|
|
}
|
|
|
|
if (state.StatusFlags & ovrStatus_PositionTracked) {
|
|
result.flags |= State_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.linearAcceleration[0] = pose.LinearAcceleration.x;
|
|
result.linearAcceleration[1] = pose.LinearAcceleration.y;
|
|
result.linearAcceleration[2] = pose.LinearAcceleration.z;
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
bool
|
|
VRHMDManagerOculus050::PlatformInit()
|
|
{
|
|
if (mOculusPlatformInitialized)
|
|
return true;
|
|
|
|
if (!gfxPrefs::VREnabled() ||
|
|
!gfxPrefs::VROculus050Enabled())
|
|
{
|
|
return false;
|
|
}
|
|
|
|
if (!InitializeOculusCAPI())
|
|
return false;
|
|
|
|
ovrInitParams params;
|
|
params.Flags = ovrInit_RequestVersion;
|
|
params.RequestedMinorVersion = LIBOVR_MINOR_VERSION;
|
|
params.LogCallback = nullptr;
|
|
params.ConnectionTimeoutMS = 0;
|
|
|
|
bool ok = ovr_Initialize(¶ms);
|
|
|
|
if (!ok)
|
|
return false;
|
|
|
|
mOculusPlatformInitialized = true;
|
|
return true;
|
|
}
|
|
|
|
bool
|
|
VRHMDManagerOculus050::Init()
|
|
{
|
|
if (mOculusInitialized)
|
|
return true;
|
|
|
|
if (!PlatformInit())
|
|
return false;
|
|
|
|
int count = ovrHmd_Detect();
|
|
|
|
for (int i = 0; i < count; ++i) {
|
|
ovrHmd hmd = ovrHmd_Create(i);
|
|
if (hmd) {
|
|
RefPtr<HMDInfoOculus050> oc = new HMDInfoOculus050(hmd);
|
|
mOculusHMDs.AppendElement(oc);
|
|
}
|
|
}
|
|
|
|
// VRAddTestDevices == 1: add test device only if no real devices present
|
|
// VRAddTestDevices == 2: add test device always
|
|
if ((count == 0 && gfxPrefs::VRAddTestDevices() == 1) ||
|
|
(gfxPrefs::VRAddTestDevices() == 2))
|
|
{
|
|
ovrHmd hmd = ovrHmd_CreateDebug(ovrHmd_DK2);
|
|
if (hmd) {
|
|
RefPtr<HMDInfoOculus050> oc = new HMDInfoOculus050(hmd);
|
|
mOculusHMDs.AppendElement(oc);
|
|
}
|
|
}
|
|
|
|
mOculusInitialized = true;
|
|
return true;
|
|
}
|
|
|
|
void
|
|
VRHMDManagerOculus050::Destroy()
|
|
{
|
|
if (!mOculusInitialized)
|
|
return;
|
|
|
|
for (size_t i = 0; i < mOculusHMDs.Length(); ++i) {
|
|
mOculusHMDs[i]->Destroy();
|
|
}
|
|
|
|
mOculusHMDs.Clear();
|
|
|
|
ovr_Shutdown();
|
|
mOculusInitialized = false;
|
|
}
|
|
|
|
void
|
|
VRHMDManagerOculus050::GetHMDs(nsTArray<RefPtr<VRHMDInfo>>& aHMDResult)
|
|
{
|
|
Init();
|
|
for (size_t i = 0; i < mOculusHMDs.Length(); ++i) {
|
|
aHMDResult.AppendElement(mOculusHMDs[i]);
|
|
}
|
|
}
|