mirror of
https://gitlab.winehq.org/wine/wine-gecko.git
synced 2024-09-13 09:24:08 -07:00
242 lines
7.5 KiB
C++
242 lines
7.5 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/Hal.h"
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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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using namespace mozilla::dom;
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using namespace mozilla::gfx;
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using namespace mozilla::gfx::impl;
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HMDInfoCardboard::HMDInfoCardboard()
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: VRHMDInfo(VRHMDType::Cardboard, true)
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{
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MOZ_ASSERT(sizeof(HMDInfoCardboard::DistortionVertex) == sizeof(VRDistortionVertex),
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"HMDInfoCardboard::DistortionVertex must match the size of VRDistortionVertex");
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MOZ_COUNT_CTOR_INHERITED(HMDInfoCardboard, VRHMDInfo);
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mDeviceInfo.mDeviceName.AssignLiteral("Phone Sensor (Cardboard) HMD");
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mDeviceInfo.mSupportedSensorBits = VRStateValidFlags::State_Orientation;
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mDeviceInfo.mRecommendedEyeFOV[VRDeviceInfo::Eye_Left] = gfx::VRFieldOfView(45.0, 45.0, 45.0, 45.0);
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mDeviceInfo.mRecommendedEyeFOV[VRDeviceInfo::Eye_Right] = gfx::VRFieldOfView(45.0, 45.0, 45.0, 45.0);
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mDeviceInfo.mMaximumEyeFOV[VRDeviceInfo::Eye_Left] = gfx::VRFieldOfView(45.0, 45.0, 45.0, 45.0);
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mDeviceInfo.mMaximumEyeFOV[VRDeviceInfo::Eye_Right] = gfx::VRFieldOfView(45.0, 45.0, 45.0, 45.0);
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SetFOV(mDeviceInfo.mRecommendedEyeFOV[VRDeviceInfo::Eye_Left], mDeviceInfo.mRecommendedEyeFOV[VRDeviceInfo::Eye_Right], 0.01, 10000.0);
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mDeviceInfo.mScreenRect.x = 0;
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mDeviceInfo.mScreenRect.y = 0;
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mDeviceInfo.mScreenRect.width = 1920;
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mDeviceInfo.mScreenRect.height = 1080;
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mDeviceInfo.mIsFakeScreen = true;
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}
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VRHMDSensorState
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HMDInfoCardboard::GetSensorState(double timeOffset)
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{
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// Actual sensor state is calculated on the main thread,
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// within VRDeviceProxyOrientationFallBack
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VRHMDSensorState result;
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result.Clear();
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return result;
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}
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void
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HMDInfoCardboard::ZeroSensor()
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{
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MOZ_ASSERT(0, "HMDInfoCardboard::ZeroSensor not implemented. "
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"Should use VRDeviceProxyOrientationFallBack on main thread");
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}
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void
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HMDInfoCardboard::NotifyVsync(const TimeStamp& aVsyncTimestamp)
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{
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// Nothing to do here for Cardboard VR
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}
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bool
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HMDInfoCardboard::KeepSensorTracking()
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{
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// Nothing to do here for Cardboard VR
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return true;
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}
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bool
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HMDInfoCardboard::SetFOV(const gfx::VRFieldOfView& aFOVLeft,
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const gfx::VRFieldOfView& aFOVRight,
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double zNear, double zFar)
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{
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const float standardIPD = 0.064f;
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for (uint32_t eye = 0; eye < VRDeviceInfo::NumEyes; eye++) {
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mDeviceInfo.mEyeFOV[eye] = eye == VRDeviceInfo::Eye_Left ? aFOVLeft : aFOVRight;
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mDeviceInfo.mEyeTranslation[eye] = Point3D(standardIPD * (eye == VRDeviceInfo::Eye_Left ? -1.0 : 1.0), 0.0, 0.0);
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mDeviceInfo.mEyeProjectionMatrix[eye] = mDeviceInfo.mEyeFOV[eye].ConstructProjectionMatrix(zNear, zFar, true);
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mDistortionMesh[eye].mVertices.SetLength(4);
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mDistortionMesh[eye].mIndices.SetLength(6);
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HMDInfoCardboard::DistortionVertex *destv = reinterpret_cast<HMDInfoCardboard::DistortionVertex*>(mDistortionMesh[eye].mVertices.Elements());
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float xoffs = eye == VRDeviceInfo::Eye_Left ? 0.0f : 1.0f;
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float txoffs = eye == VRDeviceInfo::Eye_Left ? 0.0f : 0.5f;
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destv[0].pos[0] = -1.0 + xoffs;
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destv[0].pos[1] = -1.0;
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destv[0].texR[0] = destv[0].texG[0] = destv[0].texB[0] = 0.0 + txoffs;
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destv[0].texR[1] = destv[0].texG[1] = destv[0].texB[1] = 1.0;
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destv[0].padding[0] = 1.0; // vignette factor
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destv[1].pos[0] = 0.0 + xoffs;
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destv[1].pos[1] = -1.0;
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destv[1].texR[0] = destv[1].texG[0] = destv[1].texB[0] = 0.5 + txoffs;
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destv[1].texR[1] = destv[1].texG[1] = destv[1].texB[1] = 1.0;
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destv[1].padding[0] = 1.0; // vignette factor
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destv[2].pos[0] = 0.0 + xoffs;
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destv[2].pos[1] = 1.0;
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destv[2].texR[0] = destv[2].texG[0] = destv[2].texB[0] = 0.5 + txoffs;
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destv[2].texR[1] = destv[2].texG[1] = destv[2].texB[1] = 0.0;
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destv[2].padding[0] = 1.0; // vignette factor
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destv[3].pos[0] = -1.0 + xoffs;
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destv[3].pos[1] = 1.0;
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destv[3].texR[0] = destv[3].texG[0] = destv[3].texB[0] = 0.0 + txoffs;
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destv[3].texR[1] = destv[3].texG[1] = destv[3].texB[1] = 0.0;
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destv[3].padding[0] = 1.0; // vignette factor
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uint16_t *iv = mDistortionMesh[eye].mIndices.Elements();
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iv[0] = 0; iv[1] = 1; iv[2] = 2;
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iv[3] = 2; iv[4] = 3; iv[5] = 0;
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}
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// XXX find out the default screen size and use that
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mDeviceInfo.mEyeResolution.width = 1920 / 2;
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mDeviceInfo.mEyeResolution.height = 1080;
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if (PR_GetEnv("FAKE_CARDBOARD_SCREEN")) {
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// for testing, make the eye resolution 2x of the screen
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mDeviceInfo.mEyeResolution.width *= 2;
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mDeviceInfo.mEyeResolution.height *= 2;
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}
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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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HMDInfoCardboard::FillDistortionConstants(uint32_t whichEye,
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const IntSize& textureSize, const IntRect& eyeViewport,
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const Size& destViewport, const Rect& destRect,
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VRDistortionConstants& values)
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{
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// these modify the texture coordinates; texcoord * zw + xy
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values.eyeToSourceScaleAndOffset[0] = 0.0;
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values.eyeToSourceScaleAndOffset[1] = 0.0;
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if (PR_GetEnv("FAKE_CARDBOARD_SCREEN")) {
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values.eyeToSourceScaleAndOffset[2] = 2.0;
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values.eyeToSourceScaleAndOffset[3] = 2.0;
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} else {
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values.eyeToSourceScaleAndOffset[2] = 1.0;
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values.eyeToSourceScaleAndOffset[3] = 1.0;
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}
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// Our mesh positions are in the [-1..1] clip space; we give appropriate offset
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// and scaling for the right viewport. (In the 0..2 space for sanity)
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// this is the destRect in clip space
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float x0 = destRect.x / destViewport.width * 2.0 - 1.0;
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float x1 = (destRect.x + destRect.width) / destViewport.width * 2.0 - 1.0;
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float y0 = destRect.y / destViewport.height * 2.0 - 1.0;
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float y1 = (destRect.y + destRect.height) / destViewport.height * 2.0 - 1.0;
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// offset
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values.destinationScaleAndOffset[0] = (x0+x1) / 2.0;
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values.destinationScaleAndOffset[1] = (y0+y1) / 2.0;
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// scale
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values.destinationScaleAndOffset[2] = destRect.width / destViewport.width;
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values.destinationScaleAndOffset[3] = destRect.height / destViewport.height;
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}
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void
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HMDInfoCardboard::Destroy()
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{
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}
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/*static*/ already_AddRefed<VRHMDManagerCardboard>
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VRHMDManagerCardboard::Create()
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{
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MOZ_ASSERT(NS_IsMainThread());
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if (!gfxPrefs::VREnabled() || !gfxPrefs::VRCardboardEnabled())
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{
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return nullptr;
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}
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RefPtr<VRHMDManagerCardboard> manager = new VRHMDManagerCardboard();
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return manager.forget();
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}
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bool
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VRHMDManagerCardboard::Init()
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{
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if (mCardboardInitialized) {
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return true;
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}
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RefPtr<HMDInfoCardboard> hmd = new HMDInfoCardboard();
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mCardboardHMDs.AppendElement(hmd);
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mCardboardInitialized = true;
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return true;
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}
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void
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VRHMDManagerCardboard::Destroy()
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{
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if (!mCardboardInitialized)
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return;
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for (size_t i = 0; i < mCardboardHMDs.Length(); ++i) {
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mCardboardHMDs[i]->Destroy();
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}
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mCardboardHMDs.Clear();
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mCardboardInitialized = false;
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}
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void
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VRHMDManagerCardboard::GetHMDs(nsTArray<RefPtr<VRHMDInfo>>& aHMDResult)
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{
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if (!mCardboardInitialized) {
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return;
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}
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for (size_t i = 0; i < mCardboardHMDs.Length(); ++i) {
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aHMDResult.AppendElement(mCardboardHMDs[i]);
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}
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}
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