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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 19:33:14 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 19:33:14 +0000
commit36d22d82aa202bb199967e9512281e9a53db42c9 (patch)
tree105e8c98ddea1c1e4784a60a5a6410fa416be2de /widget/windows/InProcessWinCompositorWidget.cpp
parentInitial commit. (diff)
downloadfirefox-esr-36d22d82aa202bb199967e9512281e9a53db42c9.tar.xz
firefox-esr-36d22d82aa202bb199967e9512281e9a53db42c9.zip
Adding upstream version 115.7.0esr.upstream/115.7.0esr
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'widget/windows/InProcessWinCompositorWidget.cpp')
-rw-r--r--widget/windows/InProcessWinCompositorWidget.cpp374
1 files changed, 374 insertions, 0 deletions
diff --git a/widget/windows/InProcessWinCompositorWidget.cpp b/widget/windows/InProcessWinCompositorWidget.cpp
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+++ b/widget/windows/InProcessWinCompositorWidget.cpp
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+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* 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 "InProcessWinCompositorWidget.h"
+
+#include "mozilla/StaticPrefs_layers.h"
+#include "mozilla/gfx/DeviceManagerDx.h"
+#include "mozilla/gfx/Point.h"
+#include "mozilla/layers/Compositor.h"
+#include "mozilla/layers/CompositorThread.h"
+#include "mozilla/webrender/RenderThread.h"
+#include "mozilla/widget/PlatformWidgetTypes.h"
+#include "gfxPlatform.h"
+#include "HeadlessCompositorWidget.h"
+#include "HeadlessWidget.h"
+#include "nsIWidget.h"
+#include "nsWindow.h"
+#include "VsyncDispatcher.h"
+#include "WinCompositorWindowThread.h"
+#include "VRShMem.h"
+
+#include <ddraw.h>
+
+namespace mozilla::widget {
+
+using namespace mozilla::gfx;
+using namespace mozilla;
+
+/* static */
+RefPtr<CompositorWidget> CompositorWidget::CreateLocal(
+ const CompositorWidgetInitData& aInitData,
+ const layers::CompositorOptions& aOptions, nsIWidget* aWidget) {
+ if (aInitData.type() ==
+ CompositorWidgetInitData::THeadlessCompositorWidgetInitData) {
+ return new HeadlessCompositorWidget(
+ aInitData.get_HeadlessCompositorWidgetInitData(), aOptions,
+ static_cast<HeadlessWidget*>(aWidget));
+ } else {
+ return new InProcessWinCompositorWidget(
+ aInitData.get_WinCompositorWidgetInitData(), aOptions,
+ static_cast<nsWindow*>(aWidget));
+ }
+}
+
+InProcessWinCompositorWidget::InProcessWinCompositorWidget(
+ const WinCompositorWidgetInitData& aInitData,
+ const layers::CompositorOptions& aOptions, nsWindow* aWindow)
+ : WinCompositorWidget(aInitData, aOptions),
+ mWindow(aWindow),
+ mWnd(reinterpret_cast<HWND>(aInitData.hWnd())),
+ mTransparentSurfaceLock("mTransparentSurfaceLock"),
+ mTransparencyMode(uint32_t(aInitData.transparencyMode())),
+ mMemoryDC(nullptr),
+ mCompositeDC(nullptr),
+ mLockedBackBufferData(nullptr) {
+ MOZ_ASSERT(mWindow);
+ MOZ_ASSERT(mWnd && ::IsWindow(mWnd));
+
+ // mNotDeferEndRemoteDrawing is set on the main thread during init,
+ // but is only accessed after on the compositor thread.
+ mNotDeferEndRemoteDrawing =
+ StaticPrefs::layers_offmainthreadcomposition_frame_rate() == 0 ||
+ gfxPlatform::IsInLayoutAsapMode() || gfxPlatform::ForceSoftwareVsync();
+}
+
+void InProcessWinCompositorWidget::OnDestroyWindow() {
+ gfx::CriticalSectionAutoEnter presentLock(&mPresentLock);
+ MutexAutoLock lock(mTransparentSurfaceLock);
+ mTransparentSurface = nullptr;
+ mMemoryDC = nullptr;
+}
+
+bool InProcessWinCompositorWidget::OnWindowResize(
+ const LayoutDeviceIntSize& aSize) {
+ return true;
+}
+
+void InProcessWinCompositorWidget::OnWindowModeChange(nsSizeMode aSizeMode) {}
+
+bool InProcessWinCompositorWidget::PreRender(WidgetRenderingContext* aContext) {
+ // This can block waiting for WM_SETTEXT to finish
+ // Using PreRender is unnecessarily pessimistic because
+ // we technically only need to block during the present call
+ // not all of compositor rendering
+ mPresentLock.Enter();
+ return true;
+}
+
+void InProcessWinCompositorWidget::PostRender(
+ WidgetRenderingContext* aContext) {
+ mPresentLock.Leave();
+}
+
+LayoutDeviceIntSize InProcessWinCompositorWidget::GetClientSize() {
+ RECT r;
+ if (!::GetClientRect(mWnd, &r)) {
+ return LayoutDeviceIntSize();
+ }
+ return LayoutDeviceIntSize(r.right - r.left, r.bottom - r.top);
+}
+
+already_AddRefed<gfx::DrawTarget>
+InProcessWinCompositorWidget::StartRemoteDrawing() {
+ MutexAutoLock lock(mTransparentSurfaceLock);
+
+ MOZ_ASSERT(!mCompositeDC);
+
+ RefPtr<gfxASurface> surf;
+ if (TransparencyModeIs(TransparencyMode::Transparent)) {
+ surf = EnsureTransparentSurface();
+ }
+
+ // Must call this after EnsureTransparentSurface(), since it could update
+ // the DC.
+ HDC dc = GetWindowSurface();
+ if (!surf) {
+ if (!dc) {
+ return nullptr;
+ }
+ uint32_t flags = TransparencyModeIs(TransparencyMode::Opaque)
+ ? 0
+ : gfxWindowsSurface::FLAG_IS_TRANSPARENT;
+ surf = new gfxWindowsSurface(dc, flags);
+ }
+
+ IntSize size = surf->GetSize();
+ if (size.width <= 0 || size.height <= 0) {
+ if (dc) {
+ FreeWindowSurface(dc);
+ }
+ return nullptr;
+ }
+
+ RefPtr<DrawTarget> dt =
+ mozilla::gfx::Factory::CreateDrawTargetForCairoSurface(
+ surf->CairoSurface(), size);
+ if (dt) {
+ mCompositeDC = dc;
+ } else {
+ FreeWindowSurface(dc);
+ }
+
+ return dt.forget();
+}
+
+void InProcessWinCompositorWidget::EndRemoteDrawing() {
+ MOZ_ASSERT(!mLockedBackBufferData);
+
+ if (TransparencyModeIs(TransparencyMode::Transparent)) {
+ MOZ_ASSERT(mTransparentSurface);
+ RedrawTransparentWindow();
+ }
+ if (mCompositeDC) {
+ FreeWindowSurface(mCompositeDC);
+ }
+ mCompositeDC = nullptr;
+}
+
+bool InProcessWinCompositorWidget::NeedsToDeferEndRemoteDrawing() {
+ if (mNotDeferEndRemoteDrawing) {
+ return false;
+ }
+
+ IDirectDraw7* ddraw = DeviceManagerDx::Get()->GetDirectDraw();
+ if (!ddraw) {
+ return false;
+ }
+
+ DWORD scanLine = 0;
+ int height = ::GetSystemMetrics(SM_CYSCREEN);
+ HRESULT ret = ddraw->GetScanLine(&scanLine);
+ if (ret == DDERR_VERTICALBLANKINPROGRESS) {
+ scanLine = 0;
+ } else if (ret != DD_OK) {
+ return false;
+ }
+
+ // Check if there is a risk of tearing with GDI.
+ if (static_cast<int>(scanLine) > height / 2) {
+ // No need to defer.
+ return false;
+ }
+
+ return true;
+}
+
+already_AddRefed<gfx::DrawTarget>
+InProcessWinCompositorWidget::GetBackBufferDrawTarget(
+ gfx::DrawTarget* aScreenTarget, const gfx::IntRect& aRect,
+ bool* aOutIsCleared) {
+ MOZ_ASSERT(!mLockedBackBufferData);
+
+ RefPtr<gfx::DrawTarget> target = CompositorWidget::GetBackBufferDrawTarget(
+ aScreenTarget, aRect, aOutIsCleared);
+ if (!target) {
+ return nullptr;
+ }
+
+ MOZ_ASSERT(target->GetBackendType() == BackendType::CAIRO);
+
+ uint8_t* destData;
+ IntSize destSize;
+ int32_t destStride;
+ SurfaceFormat destFormat;
+ if (!target->LockBits(&destData, &destSize, &destStride, &destFormat)) {
+ // LockBits is not supported. Use original DrawTarget.
+ return target.forget();
+ }
+
+ RefPtr<gfx::DrawTarget> dataTarget = Factory::CreateDrawTargetForData(
+ BackendType::CAIRO, destData, destSize, destStride, destFormat);
+ mLockedBackBufferData = destData;
+
+ return dataTarget.forget();
+}
+
+already_AddRefed<gfx::SourceSurface>
+InProcessWinCompositorWidget::EndBackBufferDrawing() {
+ if (mLockedBackBufferData) {
+ MOZ_ASSERT(mLastBackBuffer);
+ mLastBackBuffer->ReleaseBits(mLockedBackBufferData);
+ mLockedBackBufferData = nullptr;
+ }
+ return CompositorWidget::EndBackBufferDrawing();
+}
+
+bool InProcessWinCompositorWidget::InitCompositor(
+ layers::Compositor* aCompositor) {
+ return true;
+}
+
+void InProcessWinCompositorWidget::EnterPresentLock() { mPresentLock.Enter(); }
+
+void InProcessWinCompositorWidget::LeavePresentLock() { mPresentLock.Leave(); }
+
+RefPtr<gfxASurface> InProcessWinCompositorWidget::EnsureTransparentSurface() {
+ mTransparentSurfaceLock.AssertCurrentThreadOwns();
+ MOZ_ASSERT(TransparencyModeIs(TransparencyMode::Transparent));
+
+ IntSize size = GetClientSize().ToUnknownSize();
+ if (!mTransparentSurface || mTransparentSurface->GetSize() != size) {
+ mTransparentSurface = nullptr;
+ mMemoryDC = nullptr;
+ CreateTransparentSurface(size);
+ }
+
+ RefPtr<gfxASurface> surface = mTransparentSurface;
+ return surface.forget();
+}
+
+void InProcessWinCompositorWidget::CreateTransparentSurface(
+ const gfx::IntSize& aSize) {
+ mTransparentSurfaceLock.AssertCurrentThreadOwns();
+ MOZ_ASSERT(!mTransparentSurface && !mMemoryDC);
+ RefPtr<gfxWindowsSurface> surface =
+ new gfxWindowsSurface(aSize, SurfaceFormat::A8R8G8B8_UINT32);
+ mTransparentSurface = surface;
+ mMemoryDC = surface->GetDC();
+}
+
+void InProcessWinCompositorWidget::UpdateTransparency(TransparencyMode aMode) {
+ gfx::CriticalSectionAutoEnter presentLock(&mPresentLock);
+ MutexAutoLock lock(mTransparentSurfaceLock);
+ if (TransparencyModeIs(aMode)) {
+ return;
+ }
+
+ mTransparencyMode = uint32_t(aMode);
+ mTransparentSurface = nullptr;
+ mMemoryDC = nullptr;
+
+ if (aMode == TransparencyMode::Transparent) {
+ EnsureTransparentSurface();
+ }
+}
+
+void InProcessWinCompositorWidget::NotifyVisibilityUpdated(
+ nsSizeMode aSizeMode, bool aIsFullyOccluded) {
+ mSizeMode = aSizeMode;
+ mIsFullyOccluded = aIsFullyOccluded;
+}
+
+nsSizeMode InProcessWinCompositorWidget::GetWindowSizeMode() const {
+ nsSizeMode sizeMode = mSizeMode;
+ return sizeMode;
+}
+
+bool InProcessWinCompositorWidget::GetWindowIsFullyOccluded() const {
+ bool isFullyOccluded = mIsFullyOccluded;
+ return isFullyOccluded;
+}
+
+bool InProcessWinCompositorWidget::HasGlass() const {
+ MOZ_ASSERT(layers::CompositorThreadHolder::IsInCompositorThread() ||
+ wr::RenderThread::IsInRenderThread());
+ return TransparencyModeIs(TransparencyMode::BorderlessGlass);
+}
+
+void InProcessWinCompositorWidget::ClearTransparentWindow() {
+ gfx::CriticalSectionAutoEnter presentLock(&mPresentLock);
+ MutexAutoLock lock(mTransparentSurfaceLock);
+ if (!mTransparentSurface) {
+ return;
+ }
+
+ EnsureTransparentSurface();
+
+ IntSize size = mTransparentSurface->GetSize();
+ if (!size.IsEmpty()) {
+ RefPtr<DrawTarget> drawTarget =
+ gfxPlatform::CreateDrawTargetForSurface(mTransparentSurface, size);
+ if (!drawTarget) {
+ return;
+ }
+ drawTarget->ClearRect(Rect(0, 0, size.width, size.height));
+ RedrawTransparentWindow();
+ }
+}
+
+bool InProcessWinCompositorWidget::RedrawTransparentWindow() {
+ MOZ_ASSERT(TransparencyModeIs(TransparencyMode::Transparent));
+
+ LayoutDeviceIntSize size = GetClientSize();
+
+ ::GdiFlush();
+
+ BLENDFUNCTION bf = {AC_SRC_OVER, 0, 255, AC_SRC_ALPHA};
+ SIZE winSize = {size.width, size.height};
+ POINT srcPos = {0, 0};
+ HWND hWnd = WinUtils::GetTopLevelHWND(mWnd, true);
+ RECT winRect;
+ ::GetWindowRect(hWnd, &winRect);
+
+ // perform the alpha blend
+ return !!::UpdateLayeredWindow(hWnd, nullptr, (POINT*)&winRect, &winSize,
+ mMemoryDC, &srcPos, 0, &bf, ULW_ALPHA);
+}
+
+HDC InProcessWinCompositorWidget::GetWindowSurface() {
+ return TransparencyModeIs(TransparencyMode::Transparent) ? mMemoryDC
+ : ::GetDC(mWnd);
+}
+
+void InProcessWinCompositorWidget::FreeWindowSurface(HDC dc) {
+ if (!TransparencyModeIs(TransparencyMode::Transparent)) {
+ ::ReleaseDC(mWnd, dc);
+ }
+}
+
+bool InProcessWinCompositorWidget::IsHidden() const { return ::IsIconic(mWnd); }
+
+nsIWidget* InProcessWinCompositorWidget::RealWidget() { return mWindow; }
+
+void InProcessWinCompositorWidget::ObserveVsync(VsyncObserver* aObserver) {
+ if (RefPtr<CompositorVsyncDispatcher> cvd =
+ mWindow->GetCompositorVsyncDispatcher()) {
+ cvd->SetCompositorVsyncObserver(aObserver);
+ }
+}
+
+void InProcessWinCompositorWidget::UpdateCompositorWnd(
+ const HWND aCompositorWnd, const HWND aParentWnd) {
+ MOZ_ASSERT(layers::CompositorThreadHolder::IsInCompositorThread());
+ MOZ_ASSERT(aCompositorWnd && aParentWnd);
+ MOZ_ASSERT(aParentWnd == mWnd);
+
+ // Since we're in the parent process anyway, we can just call SetParent
+ // directly.
+ ::SetParent(aCompositorWnd, aParentWnd);
+ mSetParentCompleted = true;
+}
+} // namespace mozilla::widget