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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-19 00:47:55 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-19 00:47:55 +0000 |
commit | 26a029d407be480d791972afb5975cf62c9360a6 (patch) | |
tree | f435a8308119effd964b339f76abb83a57c29483 /gfx/vr/ipc/VRLayerChild.cpp | |
parent | Initial commit. (diff) | |
download | firefox-26a029d407be480d791972afb5975cf62c9360a6.tar.xz firefox-26a029d407be480d791972afb5975cf62c9360a6.zip |
Adding upstream version 124.0.1.upstream/124.0.1
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to '')
-rw-r--r-- | gfx/vr/ipc/VRLayerChild.cpp | 151 |
1 files changed, 151 insertions, 0 deletions
diff --git a/gfx/vr/ipc/VRLayerChild.cpp b/gfx/vr/ipc/VRLayerChild.cpp new file mode 100644 index 0000000000..57f69f7d2b --- /dev/null +++ b/gfx/vr/ipc/VRLayerChild.cpp @@ -0,0 +1,151 @@ +/* -*- 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 "VRLayerChild.h" + +#include "mozilla/dom/HTMLCanvasElement.h" +#include "mozilla/layers/ImageBridgeChild.h" +#include "mozilla/layers/LayersMessages.h" // for TimedTexture +#include "mozilla/layers/SyncObject.h" // for SyncObjectClient +#include "mozilla/StaticPrefs_dom.h" +#include "mozilla/StaticPrefs_webgl.h" + +#include "ClientWebGLContext.h" +#include "gfxPlatform.h" +#include "GLContext.h" +#include "GLScreenBuffer.h" +#include "SharedSurface.h" // for SharedSurface +#include "SharedSurfaceGL.h" // for SharedSurface + +namespace mozilla::gfx { + +VRLayerChild::VRLayerChild() { MOZ_COUNT_CTOR(VRLayerChild); } + +VRLayerChild::~VRLayerChild() { + ClearSurfaces(); + + MOZ_COUNT_DTOR(VRLayerChild); +} + +void VRLayerChild::Initialize(dom::HTMLCanvasElement* aCanvasElement, + const gfx::Rect& aLeftEyeRect, + const gfx::Rect& aRightEyeRect) { + MOZ_ASSERT(aCanvasElement); + mLeftEyeRect = aLeftEyeRect; + mRightEyeRect = aRightEyeRect; + mCanvasElement = aCanvasElement; +} + +void VRLayerChild::SetXRFramebuffer(WebGLFramebufferJS* fb) { + mFramebuffer = fb; +} + +static constexpr bool kIsAndroid = +#if defined(MOZ_WIDGET_ANDROID) + true; +#else + false; +#endif + +void VRLayerChild::SubmitFrame(const VRDisplayInfo& aDisplayInfo) { + uint64_t frameId = aDisplayInfo.GetFrameId(); + + // aFrameId will not increment unless the previuosly submitted + // frame was received by the VR thread and submitted to the VR + // compositor. We early-exit here in the event that SubmitFrame + // was called twice for the same aFrameId. + if (!mCanvasElement || frameId == mLastSubmittedFrameId) { + return; + } + + const auto& webgl = mCanvasElement->GetWebGLContext(); + if (!webgl) return; + + // Keep the SharedSurfaceTextureClient alive long enough for + // 1 extra frame, accomodating overlapped asynchronous rendering. + mLastFrameTextureDesc = mThisFrameTextureDesc; + + bool getNewFrame = true; + if (kIsAndroid) { + /** + * Do not blit WebGL to a SurfaceTexture until the last submitted frame is + * already processed and the new frame poses are ready. SurfaceTextures need + * to be released in the VR render thread in order to allow to be used again + * in the WebGLContext GLScreenBuffer producer. Not doing so causes some + * freezes, crashes or other undefined behaviour. + */ + getNewFrame = (!mThisFrameTextureDesc || + aDisplayInfo.mDisplayState.lastSubmittedFrameId == + mLastSubmittedFrameId); + } + if (getNewFrame) { + const RefPtr<layers::ImageBridgeChild> imageBridge = + layers::ImageBridgeChild::GetSingleton(); + + auto texType = layers::TextureType::Unknown; + if (imageBridge) { + texType = layers::PreferredCanvasTextureType(imageBridge); + } + if (kIsAndroid && StaticPrefs::webgl_enable_surface_texture()) { + texType = layers::TextureType::AndroidNativeWindow; + } + + webgl->Present(mFramebuffer, texType, true); + mThisFrameTextureDesc = webgl->GetFrontBuffer(mFramebuffer, true); + } + + mLastSubmittedFrameId = frameId; + + if (!mThisFrameTextureDesc) { + gfxCriticalError() << "ToSurfaceDescriptor failed in " + "VRLayerChild::SubmitFrame"; + return; + } + + SendSubmitFrame(*mThisFrameTextureDesc, frameId, mLeftEyeRect, mRightEyeRect); +} + +bool VRLayerChild::IsIPCOpen() { return mIPCOpen; } + +void VRLayerChild::ClearSurfaces() { + mThisFrameTextureDesc = Nothing(); + mLastFrameTextureDesc = Nothing(); + const auto& webgl = mCanvasElement->GetWebGLContext(); + if (!mFramebuffer && webgl) { + webgl->ClearVRSwapChain(); + } +} + +void VRLayerChild::ActorDestroy(ActorDestroyReason aWhy) { mIPCOpen = false; } + +// static +PVRLayerChild* VRLayerChild::CreateIPDLActor() { + if (!StaticPrefs::dom_vr_enabled() && !StaticPrefs::dom_vr_webxr_enabled()) { + return nullptr; + } + + VRLayerChild* c = new VRLayerChild(); + c->AddIPDLReference(); + return c; +} + +// static +bool VRLayerChild::DestroyIPDLActor(PVRLayerChild* actor) { + static_cast<VRLayerChild*>(actor)->ReleaseIPDLReference(); + return true; +} + +void VRLayerChild::AddIPDLReference() { + MOZ_ASSERT(mIPCOpen == false); + mIPCOpen = true; + AddRef(); +} +void VRLayerChild::ReleaseIPDLReference() { + MOZ_ASSERT(mIPCOpen == false); + Release(); +} + +} // namespace mozilla::gfx |