Adding upstream version 124.0.1.upstream/124.0.1

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 202 insertions, 0 deletions

diff --git a/dom/vr/XRFrame.cpp b/dom/vr/XRFrame.cpp
new file mode 100644
index 0000000000..639bb2b019
--- /dev/null
+++ b/dom/vr/XRFrame.cpp
@@ -0,0 +1,202 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this file,
+ * You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "mozilla/dom/XRFrame.h"
+#include "mozilla/dom/XRRenderState.h"
+#include "mozilla/dom/XRRigidTransform.h"
+#include "mozilla/dom/XRViewerPose.h"
+#include "mozilla/dom/XRView.h"
+#include "mozilla/dom/XRReferenceSpace.h"
+#include "VRDisplayClient.h"
+
+namespace mozilla::dom {
+
+NS_IMPL_CYCLE_COLLECTION_WRAPPERCACHE(XRFrame, mParent, mSession)
+
+XRFrame::XRFrame(nsISupports* aParent, XRSession* aXRSession)
+    : mParent(aParent),
+      mSession(aXRSession),
+      mActive(false),
+      mAnimationFrame(false) {}
+
+JSObject* XRFrame::WrapObject(JSContext* aCx,
+                              JS::Handle<JSObject*> aGivenProto) {
+  return XRFrame_Binding::Wrap(aCx, this, aGivenProto);
+}
+
+XRSession* XRFrame::Session() { return mSession; }
+
+already_AddRefed<XRViewerPose> XRFrame::GetViewerPose(
+    const XRReferenceSpace& aReferenceSpace, ErrorResult& aRv) {
+  if (!mActive || !mAnimationFrame) {
+    aRv.ThrowInvalidStateError(
+        "GetViewerPose can only be called on an XRFrame during an "
+        "XRSession.requestAnimationFrame callback.");
+    return nullptr;
+  }
+
+  if (aReferenceSpace.GetSession() != mSession) {
+    aRv.ThrowInvalidStateError(
+        "The XRReferenceSpace passed to GetViewerPose must belong to the "
+        "XRSession that GetViewerPose is called on.");
+    return nullptr;
+  }
+
+  if (!mSession->CanReportPoses()) {
+    aRv.ThrowSecurityError(
+        "The visibilityState of the XRSpace's XRSession "
+        "that is passed to GetViewerPose must be 'visible'.");
+    return nullptr;
+  }
+
+  // TODO (Bug 1616393) - Check if poses must be limited:
+  // https://immersive-web.github.io/webxr/#poses-must-be-limited
+
+  bool emulatedPosition = aReferenceSpace.IsPositionEmulated();
+
+  XRRenderState* renderState = mSession->GetActiveRenderState();
+  float depthNear = (float)renderState->DepthNear();
+  float depthFar = (float)renderState->DepthFar();
+
+  RefPtr<XRViewerPose> viewerPose;
+
+  gfx::VRDisplayClient* display = mSession->GetDisplayClient();
+  if (display) {
+    // Have a VRDisplayClient
+    const gfx::VRDisplayInfo& displayInfo =
+        mSession->GetDisplayClient()->GetDisplayInfo();
+    const gfx::VRHMDSensorState& sensorState = display->GetSensorState();
+
+    gfx::PointDouble3D viewerPosition = gfx::PointDouble3D(
+        sensorState.pose.position[0], sensorState.pose.position[1],
+        sensorState.pose.position[2]);
+    gfx::QuaternionDouble viewerOrientation = gfx::QuaternionDouble(
+        sensorState.pose.orientation[0], sensorState.pose.orientation[1],
+        sensorState.pose.orientation[2], sensorState.pose.orientation[3]);
+
+    gfx::Matrix4x4Double headTransform;
+    headTransform.SetRotationFromQuaternion(viewerOrientation);
+    headTransform.PostTranslate(viewerPosition);
+
+    gfx::Matrix4x4Double originTransform;
+    originTransform.SetRotationFromQuaternion(
+        aReferenceSpace.GetEffectiveOriginOrientation().Inverse());
+    originTransform.PreTranslate(-aReferenceSpace.GetEffectiveOriginPosition());
+
+    headTransform *= originTransform;
+
+    viewerPose = mSession->PooledViewerPose(headTransform, emulatedPosition);
+
+    auto updateEye = [&](int32_t viewIndex, gfx::VRDisplayState::Eye eye) {
+      auto offset = displayInfo.GetEyeTranslation(eye);
+      auto eyeFromHead = gfx::Matrix4x4Double::Translation(
+          gfx::PointDouble3D(offset.x, offset.y, offset.z));
+      auto eyeTransform = eyeFromHead * headTransform;
+      gfx::PointDouble3D eyePosition;
+      gfx::QuaternionDouble eyeRotation;
+      gfx::PointDouble3D eyeScale;
+      eyeTransform.Decompose(eyePosition, eyeRotation, eyeScale);
+
+      const gfx::VRFieldOfView fov = displayInfo.mDisplayState.eyeFOV[eye];
+      gfx::Matrix4x4 projection =
+          fov.ConstructProjectionMatrix(depthNear, depthFar, true);
+      viewerPose->GetEye(viewIndex)->Update(eyePosition, eyeRotation,
+                                            projection);
+    };
+
+    updateEye(0, gfx::VRDisplayState::Eye_Left);
+    updateEye(1, gfx::VRDisplayState::Eye_Right);
+  } else {
+    auto inlineVerticalFov = renderState->GetInlineVerticalFieldOfView();
+    const double fov =
+        inlineVerticalFov.IsNull() ? M_PI * 0.5f : inlineVerticalFov.Value();
+    HTMLCanvasElement* canvas = renderState->GetOutputCanvas();
+    float aspect = 1.0f;
+    if (canvas) {
+      aspect = (float)canvas->Width() / (float)canvas->Height();
+    }
+    gfx::Matrix4x4 projection =
+        ConstructInlineProjection((float)fov, aspect, depthNear, depthFar);
+
+    viewerPose =
+        mSession->PooledViewerPose(gfx::Matrix4x4Double(), emulatedPosition);
+    viewerPose->GetEye(0)->Update(gfx::PointDouble3D(), gfx::QuaternionDouble(),
+                                  projection);
+  }
+
+  return viewerPose.forget();
+}
+
+already_AddRefed<XRPose> XRFrame::GetPose(const XRSpace& aSpace,
+                                          const XRSpace& aBaseSpace,
+                                          ErrorResult& aRv) {
+  if (!mActive) {
+    aRv.ThrowInvalidStateError(
+        "GetPose can not be called on an XRFrame that is not active.");
+    return nullptr;
+  }
+
+  if (aSpace.GetSession() != mSession || aBaseSpace.GetSession() != mSession) {
+    aRv.ThrowInvalidStateError(
+        "The XRSpace passed to GetPose must belong to the "
+        "XRSession that GetPose is called on.");
+    return nullptr;
+  }
+
+  if (!mSession->CanReportPoses()) {
+    aRv.ThrowSecurityError(
+        "The visibilityState of the XRSpace's XRSession "
+        "that is passed to GetPose must be 'visible'.");
+    return nullptr;
+  }
+
+  // TODO (Bug 1616393) - Check if poses must be limited:
+  // https://immersive-web.github.io/webxr/#poses-must-be-limited
+
+  const bool emulatedPosition = aSpace.IsPositionEmulated();
+  gfx::Matrix4x4Double base;
+  base.SetRotationFromQuaternion(
+      aBaseSpace.GetEffectiveOriginOrientation().Inverse());
+  base.PreTranslate(-aBaseSpace.GetEffectiveOriginPosition());
+
+  gfx::Matrix4x4Double matrix = aSpace.GetEffectiveOriginTransform() * base;
+
+  RefPtr<XRRigidTransform> transform = new XRRigidTransform(mParent, matrix);
+  RefPtr<XRPose> pose = new XRPose(mParent, transform, emulatedPosition);
+
+  return pose.forget();
+}
+
+void XRFrame::StartAnimationFrame() {
+  mActive = true;
+  mAnimationFrame = true;
+}
+
+void XRFrame::EndAnimationFrame() { mActive = false; }
+
+void XRFrame::StartInputSourceEvent() { mActive = true; }
+
+void XRFrame::EndInputSourceEvent() { mActive = false; }
+
+gfx::Matrix4x4 XRFrame::ConstructInlineProjection(float aFov, float aAspect,
+                                                  float aNear, float aFar) {
+  gfx::Matrix4x4 m;
+  const float depth = aFar - aNear;
+  const float invDepth = 1 / depth;
+  if (aFov == 0) {
+    aFov = 0.5f * M_PI;
+  }
+
+  m._22 = 1.0f / tan(0.5f * aFov);
+  m._11 = -m._22 / aAspect;
+  m._33 = depth * invDepth;
+  m._43 = (-aFar * aNear) * invDepth;
+  m._34 = 1.0f;
+
+  return m;
+}
+
+}  // namespace mozilla::dom