mirror of
https://github.com/classilla/tenfourfox.git
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217 lines
5.4 KiB
C++
217 lines
5.4 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 "nsString.h"
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#include "gfxPrefs.h"
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#include "gfxVR.h"
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#if defined(XP_WIN)
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#include "gfxVROculus.h"
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#endif
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#if defined(XP_WIN) || defined(XP_MACOSX) || defined(XP_LINUX)
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#include "gfxVROculus050.h"
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#endif
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#include "gfxVRCardboard.h"
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#include "nsServiceManagerUtils.h"
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#include "nsIScreenManager.h"
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#include "mozilla/unused.h"
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#include "mozilla/layers/Compositor.h"
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#include "mozilla/layers/TextureHost.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;
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using namespace mozilla::gfx;
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// Dummy nsIScreen implementation, for when we just need to specify a size
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class FakeScreen : public nsIScreen
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{
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public:
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explicit FakeScreen(const IntRect& aScreenRect)
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: mScreenRect(aScreenRect)
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{ }
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NS_DECL_ISUPPORTS
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NS_IMETHOD GetRect(int32_t *l, int32_t *t, int32_t *w, int32_t *h) override {
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*l = mScreenRect.x;
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*t = mScreenRect.y;
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*w = mScreenRect.width;
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*h = mScreenRect.height;
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return NS_OK;
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}
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NS_IMETHOD GetAvailRect(int32_t *l, int32_t *t, int32_t *w, int32_t *h) override {
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return GetRect(l, t, w, h);
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}
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NS_IMETHOD GetRectDisplayPix(int32_t *l, int32_t *t, int32_t *w, int32_t *h) override {
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return GetRect(l, t, w, h);
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}
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NS_IMETHOD GetAvailRectDisplayPix(int32_t *l, int32_t *t, int32_t *w, int32_t *h) override {
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return GetAvailRect(l, t, w, h);
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}
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NS_IMETHOD GetId(uint32_t* aId) override { *aId = (uint32_t)-1; return NS_OK; }
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NS_IMETHOD GetPixelDepth(int32_t* aPixelDepth) override { *aPixelDepth = 24; return NS_OK; }
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NS_IMETHOD GetColorDepth(int32_t* aColorDepth) override { *aColorDepth = 24; return NS_OK; }
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NS_IMETHOD LockMinimumBrightness(uint32_t aBrightness) override { return NS_ERROR_NOT_AVAILABLE; }
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NS_IMETHOD UnlockMinimumBrightness(uint32_t aBrightness) override { return NS_ERROR_NOT_AVAILABLE; }
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NS_IMETHOD GetRotation(uint32_t* aRotation) override {
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*aRotation = nsIScreen::ROTATION_0_DEG;
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return NS_OK;
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}
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NS_IMETHOD SetRotation(uint32_t aRotation) override { return NS_ERROR_NOT_AVAILABLE; }
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NS_IMETHOD GetContentsScaleFactor(double* aContentsScaleFactor) override {
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*aContentsScaleFactor = 1.0;
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return NS_OK;
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}
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protected:
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virtual ~FakeScreen() {}
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IntRect mScreenRect;
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};
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NS_IMPL_ISUPPORTS(FakeScreen, nsIScreen)
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VRHMDInfo::VRHMDInfo(VRHMDType aType)
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: mType(aType)
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{
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MOZ_COUNT_CTOR(VRHMDInfo);
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mDeviceIndex = VRHMDManager::AllocateDeviceIndex();
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mDeviceName.AssignLiteral("Unknown Device");
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}
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VRHMDManager::VRHMDManagerArray *VRHMDManager::sManagers = nullptr;
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Atomic<uint32_t> VRHMDManager::sDeviceBase(0);
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/* static */ void
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VRHMDManager::ManagerInit()
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{
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if (sManagers)
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return;
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sManagers = new VRHMDManagerArray();
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RefPtr<VRHMDManager> mgr;
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// we'll only load the 0.5.0 oculus runtime if
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// the >= 0.6.0 one failed to load; otherwise
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// we might initialize oculus twice
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bool useOculus050 = true;
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Unused << useOculus050;
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#if defined(XP_WIN)
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mgr = new VRHMDManagerOculus();
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if (mgr->PlatformInit()) {
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useOculus050 = false;
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sManagers->AppendElement(mgr);
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}
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#endif
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#if defined(XP_WIN) || defined(XP_MACOSX) || defined(XP_LINUX)
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if (useOculus050) {
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mgr = new VRHMDManagerOculus050();
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if (mgr->PlatformInit())
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sManagers->AppendElement(mgr);
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}
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#endif
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mgr = new VRHMDManagerCardboard();
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if (mgr->PlatformInit())
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sManagers->AppendElement(mgr);
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}
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/* static */ void
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VRHMDManager::ManagerDestroy()
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{
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if (!sManagers)
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return;
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for (uint32_t i = 0; i < sManagers->Length(); ++i) {
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(*sManagers)[i]->Destroy();
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}
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delete sManagers;
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sManagers = nullptr;
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}
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/* static */ void
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VRHMDManager::GetAllHMDs(nsTArray<RefPtr<VRHMDInfo>>& aHMDResult)
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{
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if (!sManagers)
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return;
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for (uint32_t i = 0; i < sManagers->Length(); ++i) {
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(*sManagers)[i]->GetHMDs(aHMDResult);
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}
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}
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/* static */ uint32_t
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VRHMDManager::AllocateDeviceIndex()
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{
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return ++sDeviceBase;
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}
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/* static */ already_AddRefed<nsIScreen>
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VRHMDManager::MakeFakeScreen(int32_t x, int32_t y, uint32_t width, uint32_t height)
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{
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nsCOMPtr<nsIScreen> screen = new FakeScreen(IntRect(x, y, width, height));
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return screen.forget();
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}
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VRHMDRenderingSupport::RenderTargetSet::RenderTargetSet()
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: currentRenderTarget(0)
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{
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}
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VRHMDRenderingSupport::RenderTargetSet::~RenderTargetSet()
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{
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}
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Matrix4x4
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VRFieldOfView::ConstructProjectionMatrix(float zNear, float zFar, bool rightHanded)
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{
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float upTan = tan(upDegrees * M_PI / 180.0);
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float downTan = tan(downDegrees * M_PI / 180.0);
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float leftTan = tan(leftDegrees * M_PI / 180.0);
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float rightTan = tan(rightDegrees * M_PI / 180.0);
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float handednessScale = rightHanded ? -1.0 : 1.0;
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float pxscale = 2.0f / (leftTan + rightTan);
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float pxoffset = (leftTan - rightTan) * pxscale * 0.5;
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float pyscale = 2.0f / (upTan + downTan);
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float pyoffset = (upTan - downTan) * pyscale * 0.5;
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Matrix4x4 mobj;
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float *m = &mobj._11;
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m[0*4+0] = pxscale;
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m[2*4+0] = pxoffset * handednessScale;
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m[1*4+1] = pyscale;
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m[2*4+1] = -pyoffset * handednessScale;
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m[2*4+2] = zFar / (zNear - zFar) * -handednessScale;
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m[3*4+2] = (zFar * zNear) / (zNear - zFar);
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m[2*4+3] = handednessScale;
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m[3*4+3] = 0.0f;
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return mobj;
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}
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