зеркало из https://github.com/mozilla/gecko-dev.git
675 строки
20 KiB
C++
675 строки
20 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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#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 "mozilla/TimeStamp.h"
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#include "mozilla/gfx/Quaternion.h"
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#ifdef XP_WIN
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#include "../layers/d3d11/CompositorD3D11.h"
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#endif
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#include "gfxVROculus.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 mozilla::gfx;
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using namespace mozilla::gfx::impl;
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namespace {
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#ifdef OVR_CAPI_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_ovr_GetTimeInSeconds ovr_GetTimeInSeconds = nullptr;
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static pfn_ovr_GetHmdDesc ovr_GetHmdDesc = nullptr;
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static pfn_ovr_Create ovr_Create = nullptr;
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static pfn_ovr_Destroy ovr_Destroy = nullptr;
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static pfn_ovr_RecenterPose ovr_RecenterPose = nullptr;
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static pfn_ovr_GetTrackingState ovr_GetTrackingState = nullptr;
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static pfn_ovr_GetPredictedDisplayTime ovr_GetPredictedDisplayTime = nullptr;
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static pfn_ovr_GetFovTextureSize ovr_GetFovTextureSize = nullptr;
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static pfn_ovr_GetRenderDesc ovr_GetRenderDesc = nullptr;
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static pfn_ovr_DestroySwapTextureSet ovr_DestroySwapTextureSet = nullptr;
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static pfn_ovr_SubmitFrame ovr_SubmitFrame = nullptr;
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#ifdef XP_WIN
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static pfn_ovr_CreateSwapTextureSetD3D11 ovr_CreateSwapTextureSetD3D11 = nullptr;
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#endif
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static pfn_ovr_CreateSwapTextureSetGL ovr_CreateSwapTextureSetGL = 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 OVR_PRODUCT_VERSION 0
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#define OVR_MAJOR_VERSION 8
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#define OVR_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, OVR_PRODUCT_VERSION, OVR_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", OVR_PRODUCT_VERSION, OVR_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"), OVR_PRODUCT_VERSION, OVR_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", OVR_PRODUCT_VERSION);
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libName.Append("LibOVRRT_");
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libName.AppendInt(OVR_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, OVR_PRODUCT_VERSION, OVR_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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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(ovr_GetTimeInSeconds);
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REQUIRE_FUNCTION(ovr_GetHmdDesc);
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REQUIRE_FUNCTION(ovr_Create);
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REQUIRE_FUNCTION(ovr_Destroy);
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REQUIRE_FUNCTION(ovr_RecenterPose);
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REQUIRE_FUNCTION(ovr_GetTrackingState);
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REQUIRE_FUNCTION(ovr_GetPredictedDisplayTime);
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REQUIRE_FUNCTION(ovr_GetFovTextureSize);
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REQUIRE_FUNCTION(ovr_GetRenderDesc);
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REQUIRE_FUNCTION(ovr_DestroySwapTextureSet);
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REQUIRE_FUNCTION(ovr_SubmitFrame);
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#ifdef XP_WIN
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REQUIRE_FUNCTION(ovr_CreateSwapTextureSetD3D11);
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#endif
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REQUIRE_FUNCTION(ovr_CreateSwapTextureSetGL);
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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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#include <OVR_Version.h>
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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 gfx::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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gfx::VRFieldOfView
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FromFovPort(const ovrFovPort& aFOV)
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{
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gfx::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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} // namespace
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HMDInfoOculus::HMDInfoOculus(ovrSession aSession)
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: VRHMDInfo(VRHMDType::Oculus, false)
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, mSession(aSession)
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, mInputFrameID(0)
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{
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MOZ_ASSERT(sizeof(HMDInfoOculus::DistortionVertex) == sizeof(VRDistortionVertex),
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"HMDInfoOculus::DistortionVertex must match the size of VRDistortionVertex");
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MOZ_COUNT_CTOR_INHERITED(HMDInfoOculus, VRHMDInfo);
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mDeviceInfo.mDeviceName.AssignLiteral("Oculus VR HMD");
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mDesc = ovr_GetHmdDesc(aSession);
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mDeviceInfo.mSupportedSensorBits = VRStateValidFlags::State_None;
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if (mDesc.AvailableTrackingCaps & ovrTrackingCap_Orientation) {
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mDeviceInfo.mSupportedSensorBits |= VRStateValidFlags::State_Orientation;
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}
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if (mDesc.AvailableTrackingCaps & ovrTrackingCap_Position) {
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mDeviceInfo.mSupportedSensorBits |= VRStateValidFlags::State_Position;
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}
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mDeviceInfo.mRecommendedEyeFOV[VRDeviceInfo::Eye_Left] = FromFovPort(mDesc.DefaultEyeFov[ovrEye_Left]);
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mDeviceInfo.mRecommendedEyeFOV[VRDeviceInfo::Eye_Right] = FromFovPort(mDesc.DefaultEyeFov[ovrEye_Right]);
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mDeviceInfo.mMaximumEyeFOV[VRDeviceInfo::Eye_Left] = FromFovPort(mDesc.MaxEyeFov[ovrEye_Left]);
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mDeviceInfo.mMaximumEyeFOV[VRDeviceInfo::Eye_Right] = FromFovPort(mDesc.MaxEyeFov[ovrEye_Right]);
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uint32_t w = mDesc.Resolution.w;
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uint32_t h = mDesc.Resolution.h;
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mDeviceInfo.mScreenRect.x = 0;
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mDeviceInfo.mScreenRect.y = 0;
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mDeviceInfo.mScreenRect.width = std::max(w, h);
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mDeviceInfo.mScreenRect.height = std::min(w, h);
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mDeviceInfo.mIsFakeScreen = true;
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SetFOV(mDeviceInfo.mRecommendedEyeFOV[VRDeviceInfo::Eye_Left], mDeviceInfo.mRecommendedEyeFOV[VRDeviceInfo::Eye_Right], 0.01, 10000.0);
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for (int i = 0; i < kMaxLatencyFrames; i++) {
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mLastSensorState[i].Clear();
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}
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}
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void
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HMDInfoOculus::Destroy()
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{
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if (mSession) {
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ovr_Destroy(mSession);
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mSession = nullptr;
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}
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}
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bool
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HMDInfoOculus::SetFOV(const gfx::VRFieldOfView& aFOVLeft, const gfx::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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// get eye parameters and create the mesh
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for (uint32_t eye = 0; eye < VRDeviceInfo::NumEyes; eye++) {
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mDeviceInfo.mEyeFOV[eye] = eye == 0 ? aFOVLeft : aFOVRight;
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mFOVPort[eye] = ToFovPort(mDeviceInfo.mEyeFOV[eye]);
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ovrEyeRenderDesc renderDesc = ovr_GetRenderDesc(mSession, (ovrEyeType)eye, mFOVPort[eye]);
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// As of Oculus 0.6.0, the HmdToEyeViewOffset values are correct and don't need to be negated.
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mDeviceInfo.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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mDeviceInfo.mEyeProjectionMatrix[eye] = mDeviceInfo.mEyeFOV[eye].ConstructProjectionMatrix(zNear, zFar, true);
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texSize[eye] = ovr_GetFovTextureSize(mSession, (ovrEyeType)eye, mFOVPort[eye], pixelsPerDisplayPixel);
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}
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// take the max of both for eye resolution
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mDeviceInfo.mEyeResolution.width = std::max(texSize[VRDeviceInfo::Eye_Left].w, texSize[VRDeviceInfo::Eye_Right].w);
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mDeviceInfo.mEyeResolution.height = std::max(texSize[VRDeviceInfo::Eye_Left].h, texSize[VRDeviceInfo::Eye_Right].h);
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mConfiguration.hmdType = mDeviceInfo.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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HMDInfoOculus::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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}
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bool
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HMDInfoOculus::KeepSensorTracking()
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{
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// Oculus PC SDK 0.8 and newer enable tracking by default
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return true;
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}
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void
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HMDInfoOculus::NotifyVsync(const mozilla::TimeStamp& aVsyncTimestamp)
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{
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++mInputFrameID;
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}
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void
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HMDInfoOculus::ZeroSensor()
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{
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ovr_RecenterPose(mSession);
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}
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VRHMDSensorState
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HMDInfoOculus::GetSensorState()
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{
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VRHMDSensorState result;
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double frameTiming = 0.0f;
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if (gfxPrefs::VRPosePredictionEnabled()) {
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frameTiming = ovr_GetPredictedDisplayTime(mSession, mInputFrameID);
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}
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result = GetSensorState(frameTiming);
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result.inputFrameID = mInputFrameID;
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mLastSensorState[mInputFrameID % kMaxLatencyFrames] = result;
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return result;
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}
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VRHMDSensorState
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HMDInfoOculus::GetImmediateSensorState()
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{
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return GetSensorState(0.0);
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}
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VRHMDSensorState
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HMDInfoOculus::GetSensorState(double timeOffset)
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{
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VRHMDSensorState result;
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result.Clear();
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ovrTrackingState state = ovr_GetTrackingState(mSession, timeOffset, true);
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ovrPoseStatef& pose(state.HeadPose);
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result.timestamp = pose.TimeInSeconds;
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if (state.StatusFlags & ovrStatus_OrientationTracked) {
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result.flags |= VRStateValidFlags::State_Orientation;
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result.orientation[0] = pose.ThePose.Orientation.x;
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result.orientation[1] = pose.ThePose.Orientation.y;
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result.orientation[2] = pose.ThePose.Orientation.z;
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result.orientation[3] = pose.ThePose.Orientation.w;
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result.angularVelocity[0] = pose.AngularVelocity.x;
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result.angularVelocity[1] = pose.AngularVelocity.y;
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result.angularVelocity[2] = pose.AngularVelocity.z;
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result.angularAcceleration[0] = pose.AngularAcceleration.x;
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result.angularAcceleration[1] = pose.AngularAcceleration.y;
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result.angularAcceleration[2] = pose.AngularAcceleration.z;
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}
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if (state.StatusFlags & ovrStatus_PositionTracked) {
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result.flags |= VRStateValidFlags::State_Position;
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result.position[0] = pose.ThePose.Position.x;
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result.position[1] = pose.ThePose.Position.y;
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result.position[2] = pose.ThePose.Position.z;
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result.linearVelocity[0] = pose.LinearVelocity.x;
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result.linearVelocity[1] = pose.LinearVelocity.y;
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result.linearVelocity[2] = pose.LinearVelocity.z;
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result.linearAcceleration[0] = pose.LinearAcceleration.x;
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result.linearAcceleration[1] = pose.LinearAcceleration.y;
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result.linearAcceleration[2] = pose.LinearAcceleration.z;
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}
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return result;
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}
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struct RenderTargetSetOculus : public VRHMDRenderingSupport::RenderTargetSet
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{
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RenderTargetSetOculus(const IntSize& aSize,
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HMDInfoOculus *aHMD,
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ovrSwapTextureSet *aTS)
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: hmd(aHMD)
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{
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textureSet = aTS;
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size = aSize;
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}
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already_AddRefed<layers::CompositingRenderTarget> GetNextRenderTarget() override {
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currentRenderTarget = (currentRenderTarget + 1) % renderTargets.Length();
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textureSet->CurrentIndex = currentRenderTarget;
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renderTargets[currentRenderTarget]->ClearOnBind();
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RefPtr<layers::CompositingRenderTarget> rt = renderTargets[currentRenderTarget];
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return rt.forget();
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}
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void Destroy() {
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if (!hmd)
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return;
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if (hmd->GetOculusSession()) {
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// If the ovrSession was already destroyed, so were all associated
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// texture sets
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ovr_DestroySwapTextureSet(hmd->GetOculusSession(), textureSet);
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}
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hmd = nullptr;
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textureSet = nullptr;
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}
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~RenderTargetSetOculus() {
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Destroy();
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}
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RefPtr<HMDInfoOculus> hmd;
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ovrSwapTextureSet *textureSet;
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};
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#ifdef XP_WIN
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class BasicTextureSourceD3D11 : public layers::TextureSourceD3D11
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{
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public:
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BasicTextureSourceD3D11(ID3D11Texture2D *aTexture, const IntSize& aSize) {
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mTexture = aTexture;
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mSize = aSize;
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}
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};
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struct RenderTargetSetD3D11 : public RenderTargetSetOculus
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{
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RenderTargetSetD3D11(layers::CompositorD3D11 *aCompositor,
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const IntSize& aSize,
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HMDInfoOculus *aHMD,
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ovrSwapTextureSet *aTS)
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: RenderTargetSetOculus(aSize, aHMD, aTS)
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{
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compositor = aCompositor;
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renderTargets.SetLength(aTS->TextureCount);
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currentRenderTarget = aTS->CurrentIndex;
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for (int i = 0; i < aTS->TextureCount; ++i) {
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ovrD3D11Texture *tex11;
|
|
RefPtr<layers::CompositingRenderTargetD3D11> rt;
|
|
|
|
tex11 = (ovrD3D11Texture*)&aTS->Textures[i];
|
|
rt = new layers::CompositingRenderTargetD3D11(tex11->D3D11.pTexture, IntPoint(0, 0), DXGI_FORMAT_B8G8R8A8_UNORM);
|
|
rt->SetSize(size);
|
|
renderTargets[i] = rt;
|
|
}
|
|
}
|
|
};
|
|
#endif
|
|
|
|
already_AddRefed<VRHMDRenderingSupport::RenderTargetSet>
|
|
HMDInfoOculus::CreateRenderTargetSet(layers::Compositor *aCompositor, const IntSize& aSize)
|
|
{
|
|
#ifdef XP_WIN
|
|
if (aCompositor->GetBackendType() == layers::LayersBackend::LAYERS_D3D11)
|
|
{
|
|
layers::CompositorD3D11 *comp11 = static_cast<layers::CompositorD3D11*>(aCompositor);
|
|
|
|
CD3D11_TEXTURE2D_DESC desc(DXGI_FORMAT_B8G8R8A8_UNORM_SRGB, aSize.width, aSize.height, 1, 1,
|
|
D3D11_BIND_SHADER_RESOURCE | D3D11_BIND_RENDER_TARGET);
|
|
ovrSwapTextureSet *ts = nullptr;
|
|
|
|
ovrResult orv = ovr_CreateSwapTextureSetD3D11(mSession, comp11->GetDevice(), &desc, ovrSwapTextureSetD3D11_Typeless, &ts);
|
|
if (orv != ovrSuccess) {
|
|
return nullptr;
|
|
}
|
|
|
|
RefPtr<RenderTargetSetD3D11> rts = new RenderTargetSetD3D11(comp11, aSize, this, ts);
|
|
return rts.forget();
|
|
}
|
|
#endif
|
|
|
|
if (aCompositor->GetBackendType() == layers::LayersBackend::LAYERS_OPENGL) {
|
|
}
|
|
|
|
return nullptr;
|
|
}
|
|
|
|
void
|
|
HMDInfoOculus::DestroyRenderTargetSet(RenderTargetSet *aRTSet)
|
|
{
|
|
RenderTargetSetOculus *rts = static_cast<RenderTargetSetOculus*>(aRTSet);
|
|
rts->Destroy();
|
|
}
|
|
|
|
void
|
|
HMDInfoOculus::SubmitFrame(RenderTargetSet *aRTSet, int32_t aInputFrameID)
|
|
{
|
|
RenderTargetSetOculus *rts = static_cast<RenderTargetSetOculus*>(aRTSet);
|
|
MOZ_ASSERT(rts->hmd != nullptr);
|
|
MOZ_ASSERT(rts->textureSet != nullptr);
|
|
MOZ_ASSERT(aInputFrameID >= 0);
|
|
if (aInputFrameID < 0) {
|
|
// Sanity check to prevent invalid memory access on builds with assertions
|
|
// disabled.
|
|
aInputFrameID = 0;
|
|
}
|
|
|
|
VRHMDSensorState sensorState = mLastSensorState[aInputFrameID % kMaxLatencyFrames];
|
|
// It is possible to get a cache miss on mLastSensorState if latency is
|
|
// longer than kMaxLatencyFrames. An optimization would be to find a frame
|
|
// that is closer than the one selected with the modulus.
|
|
// If we hit this; however, latency is already so high that the site is
|
|
// un-viewable and a more accurate pose prediction is not likely to
|
|
// compensate.
|
|
ovrLayerEyeFov layer;
|
|
memset(&layer, 0, sizeof(layer));
|
|
layer.Header.Type = ovrLayerType_EyeFov;
|
|
layer.Header.Flags = 0;
|
|
layer.ColorTexture[0] = rts->textureSet;
|
|
layer.ColorTexture[1] = nullptr;
|
|
layer.Fov[0] = mFOVPort[0];
|
|
layer.Fov[1] = mFOVPort[1];
|
|
layer.Viewport[0].Pos.x = 0;
|
|
layer.Viewport[0].Pos.y = 0;
|
|
layer.Viewport[0].Size.w = rts->size.width / 2;
|
|
layer.Viewport[0].Size.h = rts->size.height;
|
|
layer.Viewport[1].Pos.x = rts->size.width / 2;
|
|
layer.Viewport[1].Pos.y = 0;
|
|
layer.Viewport[1].Size.w = rts->size.width / 2;
|
|
layer.Viewport[1].Size.h = rts->size.height;
|
|
|
|
const Point3D& l = rts->hmd->mDeviceInfo.mEyeTranslation[0];
|
|
const Point3D& r = rts->hmd->mDeviceInfo.mEyeTranslation[1];
|
|
const ovrVector3f hmdToEyeViewOffset[2] = { { l.x, l.y, l.z },
|
|
{ r.x, r.y, r.z } };
|
|
|
|
for (uint32_t i = 0; i < 2; ++i) {
|
|
gfx::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;
|
|
ovrResult orv = ovr_SubmitFrame(mSession, aInputFrameID, nullptr, &layers, 1);
|
|
//printf_stderr("Submitted frame %d, result: %d\n", rts->textureSet->CurrentIndex, orv);
|
|
if (orv != ovrSuccess) {
|
|
// not visible? failed?
|
|
}
|
|
}
|
|
|
|
/*static*/ already_AddRefed<VRHMDManagerOculus>
|
|
VRHMDManagerOculus::Create()
|
|
{
|
|
MOZ_ASSERT(NS_IsMainThread());
|
|
|
|
if (!gfxPrefs::VREnabled() || !gfxPrefs::VROculusEnabled())
|
|
{
|
|
return nullptr;
|
|
}
|
|
|
|
if (!InitializeOculusCAPI()) {
|
|
return nullptr;
|
|
}
|
|
|
|
RefPtr<VRHMDManagerOculus> manager = new VRHMDManagerOculus();
|
|
return manager.forget();
|
|
}
|
|
|
|
bool
|
|
VRHMDManagerOculus::Init()
|
|
{
|
|
if (!mOculusInitialized) {
|
|
nsIThread* thread = nullptr;
|
|
NS_GetCurrentThread(&thread);
|
|
mOculusThread = already_AddRefed<nsIThread>(thread);
|
|
|
|
ovrInitParams params;
|
|
memset(¶ms, 0, sizeof(params));
|
|
params.Flags = ovrInit_RequestVersion;
|
|
params.RequestedMinorVersion = OVR_MINOR_VERSION;
|
|
params.LogCallback = nullptr;
|
|
params.ConnectionTimeoutMS = 0;
|
|
|
|
ovrResult orv = ovr_Initialize(¶ms);
|
|
|
|
if (orv == ovrSuccess) {
|
|
mOculusInitialized = true;
|
|
}
|
|
}
|
|
|
|
return mOculusInitialized;
|
|
}
|
|
|
|
void
|
|
VRHMDManagerOculus::Destroy()
|
|
{
|
|
if(mOculusInitialized) {
|
|
MOZ_ASSERT(NS_GetCurrentThread() == mOculusThread);
|
|
mOculusThread = nullptr;
|
|
|
|
mHMDInfo = nullptr;
|
|
|
|
ovr_Shutdown();
|
|
mOculusInitialized = false;
|
|
}
|
|
}
|
|
|
|
void
|
|
VRHMDManagerOculus::GetHMDs(nsTArray<RefPtr<VRHMDInfo>>& aHMDResult)
|
|
{
|
|
if (!mOculusInitialized) {
|
|
return;
|
|
}
|
|
|
|
// 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.
|
|
mHMDInfo = nullptr;
|
|
} else if (mHMDInfo == nullptr) {
|
|
// HMD Detected
|
|
ovrSession session;
|
|
ovrGraphicsLuid luid;
|
|
ovrResult orv = ovr_Create(&session, &luid);
|
|
if (orv == ovrSuccess) {
|
|
mHMDInfo = new HMDInfoOculus(session);
|
|
}
|
|
}
|
|
|
|
if (mHMDInfo) {
|
|
aHMDResult.AppendElement(mHMDInfo);
|
|
}
|
|
}
|