mirror of
https://github.com/mozilla/gecko-dev.git
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897 lines
29 KiB
C++
897 lines
29 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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#ifndef XP_WIN
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#error "Oculus 1.3 runtime support only available for Windows"
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#endif
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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/DebugOnly.h"
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#include "mozilla/Preferences.h"
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#include "mozilla/TimeStamp.h"
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#include "mozilla/gfx/DeviceManagerDx.h"
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#include "ipc/VRLayerParent.h"
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#include "mozilla/gfx/Quaternion.h"
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#include <d3d11.h>
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#include "CompositorD3D11.h"
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#include "TextureD3D11.h"
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#include "gfxVROculus.h"
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/** XXX The DX11 objects and quad blitting could be encapsulated
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* into a separate object if either Oculus starts supporting
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* non-Windows platforms or the blit is needed by other HMD\
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* drivers.
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* Alternately, we could remove the extra blit for
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* Oculus as well with some more refactoring.
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*/
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// See CompositorD3D11Shaders.h
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struct ShaderBytes { const void* mData; size_t mLength; };
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extern ShaderBytes sRGBShader;
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extern ShaderBytes sLayerQuadVS;
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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;
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using namespace mozilla::gfx;
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using namespace mozilla::gfx::impl;
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using namespace mozilla::layers;
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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_GetLastErrorInfo ovr_GetLastErrorInfo = nullptr;
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static pfn_ovr_GetVersionString ovr_GetVersionString = nullptr;
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static pfn_ovr_TraceMessage ovr_TraceMessage = nullptr;
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static pfn_ovr_GetHmdDesc ovr_GetHmdDesc = nullptr;
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static pfn_ovr_GetTrackerCount ovr_GetTrackerCount = nullptr;
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static pfn_ovr_GetTrackerDesc ovr_GetTrackerDesc = 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_GetSessionStatus ovr_GetSessionStatus = nullptr;
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static pfn_ovr_SetTrackingOriginType ovr_SetTrackingOriginType = nullptr;
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static pfn_ovr_GetTrackingOriginType ovr_GetTrackingOriginType = nullptr;
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static pfn_ovr_RecenterTrackingOrigin ovr_RecenterTrackingOrigin = nullptr;
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static pfn_ovr_ClearShouldRecenterFlag ovr_ClearShouldRecenterFlag = nullptr;
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static pfn_ovr_GetTrackingState ovr_GetTrackingState = nullptr;
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static pfn_ovr_GetTrackerPose ovr_GetTrackerPose = nullptr;
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static pfn_ovr_GetInputState ovr_GetInputState = nullptr;
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static pfn_ovr_GetConnectedControllerTypes ovr_GetConnectedControllerTypes = nullptr;
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static pfn_ovr_SetControllerVibration ovr_SetControllerVibration = nullptr;
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static pfn_ovr_GetTextureSwapChainLength ovr_GetTextureSwapChainLength = nullptr;
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static pfn_ovr_GetTextureSwapChainCurrentIndex ovr_GetTextureSwapChainCurrentIndex = nullptr;
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static pfn_ovr_GetTextureSwapChainDesc ovr_GetTextureSwapChainDesc = nullptr;
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static pfn_ovr_CommitTextureSwapChain ovr_CommitTextureSwapChain = nullptr;
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static pfn_ovr_DestroyTextureSwapChain ovr_DestroyTextureSwapChain = nullptr;
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static pfn_ovr_DestroyMirrorTexture ovr_DestroyMirrorTexture = 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_SubmitFrame ovr_SubmitFrame = nullptr;
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static pfn_ovr_GetPredictedDisplayTime ovr_GetPredictedDisplayTime = nullptr;
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static pfn_ovr_GetTimeInSeconds ovr_GetTimeInSeconds = nullptr;
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static pfn_ovr_GetBool ovr_GetBool = nullptr;
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static pfn_ovr_SetBool ovr_SetBool = nullptr;
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static pfn_ovr_GetInt ovr_GetInt = nullptr;
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static pfn_ovr_SetInt ovr_SetInt = nullptr;
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static pfn_ovr_GetFloat ovr_GetFloat = nullptr;
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static pfn_ovr_SetFloat ovr_SetFloat = nullptr;
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static pfn_ovr_GetFloatArray ovr_GetFloatArray = nullptr;
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static pfn_ovr_SetFloatArray ovr_SetFloatArray = nullptr;
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static pfn_ovr_GetString ovr_GetString = nullptr;
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static pfn_ovr_SetString ovr_SetString = nullptr;
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#ifdef XP_WIN
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static pfn_ovr_CreateTextureSwapChainDX ovr_CreateTextureSwapChainDX = nullptr;
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static pfn_ovr_GetTextureSwapChainBufferDX ovr_GetTextureSwapChainBufferDX = nullptr;
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static pfn_ovr_CreateMirrorTextureDX ovr_CreateMirrorTextureDX = nullptr;
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static pfn_ovr_GetMirrorTextureBufferDX ovr_GetMirrorTextureBufferDX = nullptr;
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#endif
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static pfn_ovr_CreateTextureSwapChainGL ovr_CreateTextureSwapChainGL = nullptr;
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static pfn_ovr_GetTextureSwapChainBufferGL ovr_GetTextureSwapChainBufferGL = nullptr;
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static pfn_ovr_CreateMirrorTextureGL ovr_CreateMirrorTextureGL = nullptr;
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static pfn_ovr_GetMirrorTextureBufferGL ovr_GetMirrorTextureBufferGL = 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 1
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#define OVR_MAJOR_VERSION 3
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#define OVR_MINOR_VERSION 1
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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.dll", BUILD_BITS, OVR_PRODUCT_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_GetLastErrorInfo);
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REQUIRE_FUNCTION(ovr_GetVersionString);
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REQUIRE_FUNCTION(ovr_TraceMessage);
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REQUIRE_FUNCTION(ovr_GetHmdDesc);
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REQUIRE_FUNCTION(ovr_GetTrackerCount);
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REQUIRE_FUNCTION(ovr_GetTrackerDesc);
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REQUIRE_FUNCTION(ovr_Create);
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REQUIRE_FUNCTION(ovr_Destroy);
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REQUIRE_FUNCTION(ovr_GetSessionStatus);
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REQUIRE_FUNCTION(ovr_SetTrackingOriginType);
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REQUIRE_FUNCTION(ovr_GetTrackingOriginType);
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REQUIRE_FUNCTION(ovr_RecenterTrackingOrigin);
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REQUIRE_FUNCTION(ovr_ClearShouldRecenterFlag);
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REQUIRE_FUNCTION(ovr_GetTrackingState);
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REQUIRE_FUNCTION(ovr_GetTrackerPose);
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REQUIRE_FUNCTION(ovr_GetInputState);
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REQUIRE_FUNCTION(ovr_GetConnectedControllerTypes);
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REQUIRE_FUNCTION(ovr_SetControllerVibration);
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REQUIRE_FUNCTION(ovr_GetTextureSwapChainLength);
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REQUIRE_FUNCTION(ovr_GetTextureSwapChainCurrentIndex);
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REQUIRE_FUNCTION(ovr_GetTextureSwapChainDesc);
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REQUIRE_FUNCTION(ovr_CommitTextureSwapChain);
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REQUIRE_FUNCTION(ovr_DestroyTextureSwapChain);
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REQUIRE_FUNCTION(ovr_DestroyMirrorTexture);
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REQUIRE_FUNCTION(ovr_GetFovTextureSize);
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REQUIRE_FUNCTION(ovr_GetRenderDesc);
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REQUIRE_FUNCTION(ovr_SubmitFrame);
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REQUIRE_FUNCTION(ovr_GetPredictedDisplayTime);
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REQUIRE_FUNCTION(ovr_GetTimeInSeconds);
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REQUIRE_FUNCTION(ovr_GetBool);
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REQUIRE_FUNCTION(ovr_SetBool);
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REQUIRE_FUNCTION(ovr_GetInt);
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REQUIRE_FUNCTION(ovr_SetInt);
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REQUIRE_FUNCTION(ovr_GetFloat);
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REQUIRE_FUNCTION(ovr_SetFloat);
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REQUIRE_FUNCTION(ovr_GetFloatArray);
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REQUIRE_FUNCTION(ovr_SetFloatArray);
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REQUIRE_FUNCTION(ovr_GetString);
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REQUIRE_FUNCTION(ovr_SetString);
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#ifdef XP_WIN
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REQUIRE_FUNCTION(ovr_CreateTextureSwapChainDX);
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REQUIRE_FUNCTION(ovr_GetTextureSwapChainBufferDX);
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REQUIRE_FUNCTION(ovr_CreateMirrorTextureDX);
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REQUIRE_FUNCTION(ovr_GetMirrorTextureBufferDX);
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#endif
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REQUIRE_FUNCTION(ovr_CreateTextureSwapChainGL);
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REQUIRE_FUNCTION(ovr_GetTextureSwapChainBufferGL);
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REQUIRE_FUNCTION(ovr_CreateMirrorTextureGL);
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REQUIRE_FUNCTION(ovr_GetMirrorTextureBufferGL);
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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 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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} // namespace
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VRDisplayOculus::VRDisplayOculus(ovrSession aSession)
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: VRDisplayHost(VRDisplayType::Oculus)
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, mSession(aSession)
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, mTextureSet(nullptr)
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, mQuadVS(nullptr)
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, mQuadPS(nullptr)
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, mLinearSamplerState(nullptr)
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, mVSConstantBuffer(nullptr)
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, mPSConstantBuffer(nullptr)
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, mVertexBuffer(nullptr)
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, mInputLayout(nullptr)
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, mIsPresenting(false)
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{
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MOZ_COUNT_CTOR_INHERITED(VRDisplayOculus, VRDisplayHost);
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mDisplayInfo.mDisplayName.AssignLiteral("Oculus VR HMD");
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mDisplayInfo.mIsConnected = true;
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mDesc = ovr_GetHmdDesc(aSession);
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mDisplayInfo.mCapabilityFlags = VRDisplayCapabilityFlags::Cap_None;
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if (mDesc.AvailableTrackingCaps & ovrTrackingCap_Orientation) {
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mDisplayInfo.mCapabilityFlags |= VRDisplayCapabilityFlags::Cap_Orientation;
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mDisplayInfo.mCapabilityFlags |= VRDisplayCapabilityFlags::Cap_AngularAcceleration;
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}
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if (mDesc.AvailableTrackingCaps & ovrTrackingCap_Position) {
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mDisplayInfo.mCapabilityFlags |= VRDisplayCapabilityFlags::Cap_Position;
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mDisplayInfo.mCapabilityFlags |= VRDisplayCapabilityFlags::Cap_LinearAcceleration;
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}
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mDisplayInfo.mCapabilityFlags |= VRDisplayCapabilityFlags::Cap_External;
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mDisplayInfo.mCapabilityFlags |= VRDisplayCapabilityFlags::Cap_Present;
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mFOVPort[VRDisplayInfo::Eye_Left] = mDesc.DefaultEyeFov[ovrEye_Left];
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mFOVPort[VRDisplayInfo::Eye_Right] = mDesc.DefaultEyeFov[ovrEye_Right];
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mDisplayInfo.mEyeFOV[VRDisplayInfo::Eye_Left] = FromFovPort(mFOVPort[VRDisplayInfo::Eye_Left]);
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mDisplayInfo.mEyeFOV[VRDisplayInfo::Eye_Right] = FromFovPort(mFOVPort[VRDisplayInfo::Eye_Right]);
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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 < VRDisplayInfo::NumEyes; 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 HmdToEyeOffset values are correct and don't need to be negated.
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mDisplayInfo.mEyeTranslation[eye] = Point3D(renderDesc.HmdToEyeOffset.x, renderDesc.HmdToEyeOffset.y, renderDesc.HmdToEyeOffset.z);
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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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mDisplayInfo.mEyeResolution.width = std::max(texSize[VRDisplayInfo::Eye_Left].w, texSize[VRDisplayInfo::Eye_Right].w);
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mDisplayInfo.mEyeResolution.height = std::max(texSize[VRDisplayInfo::Eye_Left].h, texSize[VRDisplayInfo::Eye_Right].h);
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}
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VRDisplayOculus::~VRDisplayOculus() {
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StopPresentation();
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Destroy();
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MOZ_COUNT_DTOR_INHERITED(VRDisplayOculus, VRDisplayHost);
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}
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void
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VRDisplayOculus::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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void
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VRDisplayOculus::ZeroSensor()
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{
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ovr_RecenterTrackingOrigin(mSession);
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}
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VRHMDSensorState
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VRDisplayOculus::GetSensorState()
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{
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mInputFrameID++;
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VRHMDSensorState result;
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double frameDelta = 0.0f;
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if (gfxPrefs::VRPosePredictionEnabled()) {
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// XXX We might need to call ovr_GetPredictedDisplayTime even if we don't use the result.
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// If we don't call it, the Oculus driver will spew out many warnings...
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double predictedFrameTime = ovr_GetPredictedDisplayTime(mSession, mInputFrameID);
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frameDelta = predictedFrameTime - ovr_GetTimeInSeconds();
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}
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result = GetSensorState(frameDelta);
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result.inputFrameID = mInputFrameID;
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mLastSensorState[result.inputFrameID % kMaxLatencyFrames] = result;
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return result;
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}
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VRHMDSensorState
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VRDisplayOculus::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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VRDisplayOculus::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 |= VRDisplayCapabilityFlags::Cap_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;
|
|
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_Present;
|
|
|
|
return result;
|
|
}
|
|
|
|
void
|
|
VRDisplayOculus::StartPresentation()
|
|
{
|
|
if (mIsPresenting) {
|
|
return;
|
|
}
|
|
mIsPresenting = true;
|
|
|
|
/**
|
|
* 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 = mDisplayInfo.mEyeResolution.width * 2;
|
|
desc.Height = mDisplayInfo.mEyeResolution.height;
|
|
desc.MipLevels = 1;
|
|
desc.SampleCount = 1;
|
|
desc.StaticImage = false;
|
|
desc.MiscFlags = ovrTextureMisc_DX_Typeless;
|
|
desc.BindFlags = ovrTextureBind_DX_RenderTarget;
|
|
|
|
if (!mDevice) {
|
|
mDevice = gfx::DeviceManagerDx::Get()->GetCompositorDevice();
|
|
if (!mDevice) {
|
|
NS_WARNING("Failed to get a D3D11Device for Oculus");
|
|
return;
|
|
}
|
|
}
|
|
|
|
mDevice->GetImmediateContext(getter_AddRefs(mContext));
|
|
if (!mContext) {
|
|
NS_WARNING("Failed to get immediate context for Oculus");
|
|
return;
|
|
}
|
|
|
|
if (FAILED(mDevice->CreateVertexShader(sLayerQuadVS.mData, sLayerQuadVS.mLength, nullptr, &mQuadVS))) {
|
|
NS_WARNING("Failed to create vertex shader for Oculus");
|
|
return;
|
|
}
|
|
|
|
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 (FAILED(mDevice->CreateBuffer(&cBufferDesc, nullptr, getter_AddRefs(mVSConstantBuffer)))) {
|
|
NS_WARNING("Failed to vertex shader constant buffer for Oculus");
|
|
return;
|
|
}
|
|
|
|
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;
|
|
}
|
|
|
|
CD3D11_SAMPLER_DESC samplerDesc(D3D11_DEFAULT);
|
|
if (FAILED(mDevice->CreateSamplerState(&samplerDesc, getter_AddRefs(mLinearSamplerState)))) {
|
|
NS_WARNING("Failed to create sampler state for Oculus");
|
|
return;
|
|
}
|
|
|
|
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;
|
|
}
|
|
|
|
ovrResult orv = ovr_CreateTextureSwapChainDX(mSession, mDevice, &desc, &mTextureSet);
|
|
if (orv != ovrSuccess) {
|
|
NS_WARNING("ovr_CreateTextureSwapChainDX failed");
|
|
return;
|
|
}
|
|
|
|
int textureCount = 0;
|
|
orv = ovr_GetTextureSwapChainLength(mSession, mTextureSet, &textureCount);
|
|
if (orv != ovrSuccess) {
|
|
NS_WARNING("ovr_GetTextureSwapChainLength failed");
|
|
return;
|
|
}
|
|
|
|
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;
|
|
}
|
|
|
|
mRenderTargets.SetLength(textureCount);
|
|
|
|
memset(&mVSConstants, 0, sizeof(mVSConstants));
|
|
memset(&mPSConstants, 0, sizeof(mPSConstants));
|
|
|
|
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(IntSize(mDisplayInfo.mEyeResolution.width * 2, mDisplayInfo.mEyeResolution.height));
|
|
mRenderTargets[i] = rt;
|
|
texture->Release();
|
|
}
|
|
}
|
|
|
|
void
|
|
VRDisplayOculus::StopPresentation()
|
|
{
|
|
if (!mIsPresenting) {
|
|
return;
|
|
}
|
|
mIsPresenting = false;
|
|
|
|
ovr_SubmitFrame(mSession, 0, nullptr, nullptr, 0);
|
|
|
|
if (mTextureSet) {
|
|
ovr_DestroyTextureSwapChain(mSession, mTextureSet);
|
|
mTextureSet = nullptr;
|
|
}
|
|
}
|
|
|
|
/*static*/ already_AddRefed<VRDisplayManagerOculus>
|
|
VRDisplayManagerOculus::Create()
|
|
{
|
|
MOZ_ASSERT(NS_IsMainThread());
|
|
|
|
if (!gfxPrefs::VREnabled() || !gfxPrefs::VROculusEnabled())
|
|
{
|
|
return nullptr;
|
|
}
|
|
|
|
if (!InitializeOculusCAPI()) {
|
|
return nullptr;
|
|
}
|
|
|
|
RefPtr<VRDisplayManagerOculus> manager = new VRDisplayManagerOculus();
|
|
return manager.forget();
|
|
}
|
|
|
|
bool
|
|
VRDisplayManagerOculus::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
|
|
VRDisplayManagerOculus::Destroy()
|
|
{
|
|
if (mOculusInitialized) {
|
|
MOZ_ASSERT(NS_GetCurrentThread() == mOculusThread);
|
|
mOculusThread = nullptr;
|
|
|
|
mHMDInfo = nullptr;
|
|
|
|
ovr_Shutdown();
|
|
mOculusInitialized = false;
|
|
}
|
|
}
|
|
|
|
void
|
|
VRDisplayManagerOculus::GetHMDs(nsTArray<RefPtr<VRDisplayHost>>& 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 VRDisplayOculus(session);
|
|
}
|
|
}
|
|
|
|
if (mHMDInfo) {
|
|
aHMDResult.AppendElement(mHMDInfo);
|
|
}
|
|
}
|
|
|
|
already_AddRefed<CompositingRenderTargetD3D11>
|
|
VRDisplayOculus::GetNextRenderTarget()
|
|
{
|
|
int currentRenderTarget = 0;
|
|
DebugOnly<ovrResult> orv = ovr_GetTextureSwapChainCurrentIndex(mSession, mTextureSet, ¤tRenderTarget);
|
|
MOZ_ASSERT(orv == ovrSuccess, "ovr_GetTextureSwapChainCurrentIndex failed.");
|
|
|
|
mRenderTargets[currentRenderTarget]->ClearOnBind();
|
|
RefPtr<CompositingRenderTargetD3D11> rt = mRenderTargets[currentRenderTarget];
|
|
return rt.forget();
|
|
}
|
|
|
|
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;
|
|
}
|
|
|
|
void
|
|
VRDisplayOculus::SubmitFrame(TextureSourceD3D11* aSource,
|
|
const IntSize& aSize,
|
|
const VRHMDSensorState& aSensorState,
|
|
const gfx::Rect& aLeftEyeRect,
|
|
const gfx::Rect& aRightEyeRect)
|
|
{
|
|
if (!mIsPresenting) {
|
|
return;
|
|
}
|
|
if (mRenderTargets.IsEmpty()) {
|
|
/**
|
|
* 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.
|
|
**/
|
|
return;
|
|
}
|
|
MOZ_ASSERT(mDevice);
|
|
MOZ_ASSERT(mContext);
|
|
|
|
RefPtr<CompositingRenderTargetD3D11> surface = 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();
|
|
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;
|
|
}
|
|
|
|
mContext->Draw(4, 0);
|
|
|
|
ovrResult orv = ovr_CommitTextureSwapChain(mSession, mTextureSet);
|
|
if (orv != ovrSuccess) {
|
|
NS_WARNING("ovr_CommitTextureSwapChain failed.\n");
|
|
return;
|
|
}
|
|
|
|
ovrLayerEyeFov layer;
|
|
memset(&layer, 0, sizeof(layer));
|
|
layer.Header.Type = ovrLayerType_EyeFov;
|
|
layer.Header.Flags = 0;
|
|
layer.ColorTexture[0] = mTextureSet;
|
|
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 } };
|
|
|
|
for (uint32_t i = 0; i < 2; ++i) {
|
|
Quaternion o(aSensorState.orientation[0],
|
|
aSensorState.orientation[1],
|
|
aSensorState.orientation[2],
|
|
aSensorState.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 + aSensorState.position[0];
|
|
layer.RenderPose[i].Position.y = p.y + aSensorState.position[1];
|
|
layer.RenderPose[i].Position.z = p.z + aSensorState.position[2];
|
|
}
|
|
|
|
ovrLayerHeader *layers = &layer.Header;
|
|
orv = ovr_SubmitFrame(mSession, aSensorState.inputFrameID, nullptr, &layers, 1);
|
|
|
|
if (orv != ovrSuccess) {
|
|
printf_stderr("ovr_SubmitFrame failed.\n");
|
|
}
|
|
|
|
// Trigger the next VSync immediately
|
|
VRManager *vm = VRManager::Get();
|
|
MOZ_ASSERT(vm);
|
|
vm->NotifyVRVsync(mDisplayInfo.mDisplayID);
|
|
}
|
|
|
|
void
|
|
VRDisplayOculus::NotifyVSync()
|
|
{
|
|
ovrSessionStatus sessionStatus;
|
|
ovrResult ovr = ovr_GetSessionStatus(mSession, &sessionStatus);
|
|
mDisplayInfo.mIsConnected = (ovr == ovrSuccess && sessionStatus.HmdPresent);
|
|
}
|