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diff --git a/gfx/webrender_bindings/RenderCompositorNative.cpp b/gfx/webrender_bindings/RenderCompositorNative.cpp
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+++ b/gfx/webrender_bindings/RenderCompositorNative.cpp
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+/* -*- 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 "RenderCompositorNative.h"
+
+#include "GLContext.h"
+#include "GLContextProvider.h"
+#include "mozilla/ProfilerLabels.h"
+#include "mozilla/ProfilerMarkers.h"
+#include "mozilla/gfx/gfxVars.h"
+#include "mozilla/gfx/Logging.h"
+#include "mozilla/layers/CompositionRecorder.h"
+#include "mozilla/layers/NativeLayer.h"
+#include "mozilla/layers/SurfacePool.h"
+#include "mozilla/StaticPrefs_gfx.h"
+#include "mozilla/webrender/RenderThread.h"
+#include "mozilla/widget/CompositorWidget.h"
+#include "RenderCompositorRecordedFrame.h"
+
+namespace mozilla::wr {
+
+extern LazyLogModule gRenderThreadLog;
+#define LOG(...) MOZ_LOG(gRenderThreadLog, LogLevel::Debug, (__VA_ARGS__))
+
+RenderCompositorNative::RenderCompositorNative(
+ const RefPtr<widget::CompositorWidget>& aWidget, gl::GLContext* aGL)
+ : RenderCompositor(aWidget),
+ mNativeLayerRoot(GetWidget()->GetNativeLayerRoot()) {
+ LOG("RenderCompositorNative::RenderCompositorNative()");
+
+#if defined(XP_MACOSX) || defined(MOZ_WAYLAND)
+ auto pool = RenderThread::Get()->SharedSurfacePool();
+ if (pool) {
+ mSurfacePoolHandle = pool->GetHandleForGL(aGL);
+ }
+#endif
+ MOZ_RELEASE_ASSERT(mSurfacePoolHandle);
+}
+
+RenderCompositorNative::~RenderCompositorNative() {
+ LOG("RRenderCompositorNative::~RenderCompositorNative()");
+
+ Pause();
+ mProfilerScreenshotGrabber.Destroy();
+ mNativeLayerRoot->SetLayers({});
+ mNativeLayerForEntireWindow = nullptr;
+ mNativeLayerRootSnapshotter = nullptr;
+ mNativeLayerRoot = nullptr;
+}
+
+bool RenderCompositorNative::BeginFrame() {
+ if (!MakeCurrent()) {
+ gfxCriticalNote << "Failed to make render context current, can't draw.";
+ return false;
+ }
+
+ gfx::IntSize bufferSize = GetBufferSize().ToUnknownSize();
+ if (!ShouldUseNativeCompositor()) {
+ if (bufferSize.IsEmpty()) {
+ return false;
+ }
+ if (mNativeLayerForEntireWindow &&
+ mNativeLayerForEntireWindow->GetSize() != bufferSize) {
+ mNativeLayerRoot->RemoveLayer(mNativeLayerForEntireWindow);
+ mNativeLayerForEntireWindow = nullptr;
+ }
+ if (!mNativeLayerForEntireWindow) {
+ mNativeLayerForEntireWindow =
+ mNativeLayerRoot->CreateLayer(bufferSize, false, mSurfacePoolHandle);
+ mNativeLayerRoot->AppendLayer(mNativeLayerForEntireWindow);
+ }
+ }
+
+ gfx::IntRect bounds({}, bufferSize);
+ if (!InitDefaultFramebuffer(bounds)) {
+ return false;
+ }
+
+ return true;
+}
+
+RenderedFrameId RenderCompositorNative::EndFrame(
+ const nsTArray<DeviceIntRect>& aDirtyRects) {
+ RenderedFrameId frameId = GetNextRenderFrameId();
+
+ DoSwap();
+
+ if (mNativeLayerForEntireWindow) {
+ mNativeLayerForEntireWindow->NotifySurfaceReady();
+ mNativeLayerRoot->CommitToScreen();
+ }
+
+ return frameId;
+}
+
+void RenderCompositorNative::Pause() {}
+
+bool RenderCompositorNative::Resume() { return true; }
+
+inline layers::WebRenderCompositor RenderCompositorNative::CompositorType()
+ const {
+ if (gfx::gfxVars::UseWebRenderCompositor()) {
+#if defined(XP_MACOSX)
+ return layers::WebRenderCompositor::CORE_ANIMATION;
+#elif defined(MOZ_WAYLAND)
+ return layers::WebRenderCompositor::WAYLAND;
+#endif
+ }
+ return layers::WebRenderCompositor::DRAW;
+}
+
+LayoutDeviceIntSize RenderCompositorNative::GetBufferSize() {
+ return mWidget->GetClientSize();
+}
+
+bool RenderCompositorNative::ShouldUseNativeCompositor() {
+ return gfx::gfxVars::UseWebRenderCompositor();
+}
+
+void RenderCompositorNative::GetCompositorCapabilities(
+ CompositorCapabilities* aCaps) {
+ RenderCompositor::GetCompositorCapabilities(aCaps);
+#if defined(XP_MACOSX)
+ aCaps->supports_surface_for_backdrop = !gfx::gfxVars::UseSoftwareWebRender();
+#endif
+}
+
+bool RenderCompositorNative::MaybeReadback(
+ const gfx::IntSize& aReadbackSize, const wr::ImageFormat& aReadbackFormat,
+ const Range<uint8_t>& aReadbackBuffer, bool* aNeedsYFlip) {
+ if (!ShouldUseNativeCompositor()) {
+ return false;
+ }
+
+ MOZ_RELEASE_ASSERT(aReadbackFormat == wr::ImageFormat::BGRA8);
+ if (!mNativeLayerRootSnapshotter) {
+ mNativeLayerRootSnapshotter = mNativeLayerRoot->CreateSnapshotter();
+
+ if (!mNativeLayerRootSnapshotter) {
+ return false;
+ }
+ }
+ bool success = mNativeLayerRootSnapshotter->ReadbackPixels(
+ aReadbackSize, gfx::SurfaceFormat::B8G8R8A8, aReadbackBuffer);
+
+ // ReadbackPixels might have changed the current context. Make sure GL is
+ // current again.
+ MakeCurrent();
+
+ if (aNeedsYFlip) {
+ *aNeedsYFlip = true;
+ }
+
+ return success;
+}
+
+bool RenderCompositorNative::MaybeRecordFrame(
+ layers::CompositionRecorder& aRecorder) {
+ if (!ShouldUseNativeCompositor()) {
+ return false;
+ }
+
+ if (!mNativeLayerRootSnapshotter) {
+ mNativeLayerRootSnapshotter = mNativeLayerRoot->CreateSnapshotter();
+ }
+
+ if (!mNativeLayerRootSnapshotter) {
+ return true;
+ }
+
+ gfx::IntSize size = GetBufferSize().ToUnknownSize();
+ RefPtr<layers::profiler_screenshots::RenderSource> snapshot =
+ mNativeLayerRootSnapshotter->GetWindowContents(size);
+ if (!snapshot) {
+ return true;
+ }
+
+ RefPtr<layers::profiler_screenshots::AsyncReadbackBuffer> buffer =
+ mNativeLayerRootSnapshotter->CreateAsyncReadbackBuffer(size);
+ buffer->CopyFrom(snapshot);
+
+ RefPtr<layers::RecordedFrame> frame =
+ new RenderCompositorRecordedFrame(TimeStamp::Now(), std::move(buffer));
+ aRecorder.RecordFrame(frame);
+
+ // GetWindowContents might have changed the current context. Make sure our
+ // context is current again.
+ MakeCurrent();
+ return true;
+}
+
+bool RenderCompositorNative::MaybeGrabScreenshot(
+ const gfx::IntSize& aWindowSize) {
+ if (!ShouldUseNativeCompositor()) {
+ return false;
+ }
+
+ if (!mNativeLayerRootSnapshotter) {
+ mNativeLayerRootSnapshotter = mNativeLayerRoot->CreateSnapshotter();
+ }
+
+ if (mNativeLayerRootSnapshotter) {
+ mProfilerScreenshotGrabber.MaybeGrabScreenshot(*mNativeLayerRootSnapshotter,
+ aWindowSize);
+
+ // MaybeGrabScreenshot might have changed the current context. Make sure our
+ // context is current again.
+ MakeCurrent();
+ }
+
+ return true;
+}
+
+bool RenderCompositorNative::MaybeProcessScreenshotQueue() {
+ if (!ShouldUseNativeCompositor()) {
+ return false;
+ }
+
+ mProfilerScreenshotGrabber.MaybeProcessQueue();
+
+ // MaybeProcessQueue might have changed the current context. Make sure our
+ // context is current again.
+ MakeCurrent();
+
+ return true;
+}
+
+void RenderCompositorNative::CompositorBeginFrame() {
+ mAddedLayers.Clear();
+ mAddedTilePixelCount = 0;
+ mAddedClippedPixelCount = 0;
+ mBeginFrameTimeStamp = TimeStamp::Now();
+ mSurfacePoolHandle->OnBeginFrame();
+ mNativeLayerRoot->PrepareForCommit();
+}
+
+void RenderCompositorNative::CompositorEndFrame() {
+ if (profiler_thread_is_being_profiled_for_markers()) {
+ auto bufferSize = GetBufferSize();
+ [[maybe_unused]] uint64_t windowPixelCount =
+ uint64_t(bufferSize.width) * bufferSize.height;
+ int nativeLayerCount = 0;
+ for (const auto& it : mSurfaces) {
+ nativeLayerCount += int(it.second.mNativeLayers.size());
+ }
+ PROFILER_MARKER_TEXT(
+ "WR OS Compositor frame", GRAPHICS,
+ MarkerTiming::IntervalUntilNowFrom(mBeginFrameTimeStamp),
+ nsPrintfCString("%d%% painting, %d%% overdraw, %d used "
+ "layers (%d%% memory) + %d unused layers (%d%% memory)",
+ int(mDrawnPixelCount * 100 / windowPixelCount),
+ int(mAddedClippedPixelCount * 100 / windowPixelCount),
+ int(mAddedLayers.Length()),
+ int(mAddedTilePixelCount * 100 / windowPixelCount),
+ int(nativeLayerCount - mAddedLayers.Length()),
+ int((mTotalTilePixelCount - mAddedTilePixelCount) *
+ 100 / windowPixelCount)));
+ }
+ mDrawnPixelCount = 0;
+
+ DoFlush();
+
+ mNativeLayerRoot->SetLayers(mAddedLayers);
+ mNativeLayerRoot->CommitToScreen();
+ mSurfacePoolHandle->OnEndFrame();
+}
+
+void RenderCompositorNative::BindNativeLayer(wr::NativeTileId aId,
+ const gfx::IntRect& aDirtyRect) {
+ MOZ_RELEASE_ASSERT(!mCurrentlyBoundNativeLayer);
+
+ auto surfaceCursor = mSurfaces.find(aId.surface_id);
+ MOZ_RELEASE_ASSERT(surfaceCursor != mSurfaces.end());
+ Surface& surface = surfaceCursor->second;
+
+ auto layerCursor = surface.mNativeLayers.find(TileKey(aId.x, aId.y));
+ MOZ_RELEASE_ASSERT(layerCursor != surface.mNativeLayers.end());
+ RefPtr<layers::NativeLayer> layer = layerCursor->second;
+
+ mCurrentlyBoundNativeLayer = layer;
+
+ mDrawnPixelCount += aDirtyRect.Area();
+}
+
+void RenderCompositorNative::UnbindNativeLayer() {
+ MOZ_RELEASE_ASSERT(mCurrentlyBoundNativeLayer);
+
+ mCurrentlyBoundNativeLayer->NotifySurfaceReady();
+ mCurrentlyBoundNativeLayer = nullptr;
+}
+
+void RenderCompositorNative::CreateSurface(wr::NativeSurfaceId aId,
+ wr::DeviceIntPoint aVirtualOffset,
+ wr::DeviceIntSize aTileSize,
+ bool aIsOpaque) {
+ MOZ_RELEASE_ASSERT(mSurfaces.find(aId) == mSurfaces.end());
+ mSurfaces.insert({aId, Surface{aTileSize, aIsOpaque}});
+}
+
+void RenderCompositorNative::CreateExternalSurface(wr::NativeSurfaceId aId,
+ bool aIsOpaque) {
+ MOZ_RELEASE_ASSERT(mSurfaces.find(aId) == mSurfaces.end());
+
+ RefPtr<layers::NativeLayer> layer =
+ mNativeLayerRoot->CreateLayerForExternalTexture(aIsOpaque);
+
+ Surface surface{DeviceIntSize{}, aIsOpaque};
+ surface.mIsExternal = true;
+ surface.mNativeLayers.insert({TileKey(0, 0), layer});
+
+ mSurfaces.insert({aId, std::move(surface)});
+}
+
+void RenderCompositorNative::CreateBackdropSurface(wr::NativeSurfaceId aId,
+ wr::ColorF aColor) {
+ MOZ_RELEASE_ASSERT(mSurfaces.find(aId) == mSurfaces.end());
+
+ gfx::DeviceColor color(aColor.r, aColor.g, aColor.b, aColor.a);
+ RefPtr<layers::NativeLayer> layer =
+ mNativeLayerRoot->CreateLayerForColor(color);
+
+ Surface surface{DeviceIntSize{}, (aColor.a >= 1.0f)};
+ surface.mNativeLayers.insert({TileKey(0, 0), layer});
+
+ mSurfaces.insert({aId, std::move(surface)});
+}
+
+void RenderCompositorNative::AttachExternalImage(
+ wr::NativeSurfaceId aId, wr::ExternalImageId aExternalImage) {
+ RenderTextureHost* image =
+ RenderThread::Get()->GetRenderTexture(aExternalImage);
+ MOZ_RELEASE_ASSERT(image);
+
+ auto surfaceCursor = mSurfaces.find(aId);
+ MOZ_RELEASE_ASSERT(surfaceCursor != mSurfaces.end());
+
+ Surface& surface = surfaceCursor->second;
+ MOZ_RELEASE_ASSERT(surface.mNativeLayers.size() == 1);
+ MOZ_RELEASE_ASSERT(surface.mIsExternal);
+ surface.mNativeLayers.begin()->second->AttachExternalImage(image);
+}
+
+void RenderCompositorNative::DestroySurface(NativeSurfaceId aId) {
+ auto surfaceCursor = mSurfaces.find(aId);
+ MOZ_RELEASE_ASSERT(surfaceCursor != mSurfaces.end());
+
+ Surface& surface = surfaceCursor->second;
+ if (!surface.mIsExternal) {
+ for (const auto& iter : surface.mNativeLayers) {
+ mTotalTilePixelCount -= gfx::IntRect({}, iter.second->GetSize()).Area();
+ }
+ }
+
+ mSurfaces.erase(surfaceCursor);
+}
+
+void RenderCompositorNative::CreateTile(wr::NativeSurfaceId aId, int aX,
+ int aY) {
+ auto surfaceCursor = mSurfaces.find(aId);
+ MOZ_RELEASE_ASSERT(surfaceCursor != mSurfaces.end());
+ Surface& surface = surfaceCursor->second;
+ MOZ_RELEASE_ASSERT(!surface.mIsExternal);
+
+ RefPtr<layers::NativeLayer> layer = mNativeLayerRoot->CreateLayer(
+ surface.TileSize(), surface.mIsOpaque, mSurfacePoolHandle);
+ surface.mNativeLayers.insert({TileKey(aX, aY), layer});
+ mTotalTilePixelCount += gfx::IntRect({}, layer->GetSize()).Area();
+}
+
+void RenderCompositorNative::DestroyTile(wr::NativeSurfaceId aId, int aX,
+ int aY) {
+ auto surfaceCursor = mSurfaces.find(aId);
+ MOZ_RELEASE_ASSERT(surfaceCursor != mSurfaces.end());
+ Surface& surface = surfaceCursor->second;
+ MOZ_RELEASE_ASSERT(!surface.mIsExternal);
+
+ auto layerCursor = surface.mNativeLayers.find(TileKey(aX, aY));
+ MOZ_RELEASE_ASSERT(layerCursor != surface.mNativeLayers.end());
+ RefPtr<layers::NativeLayer> layer = std::move(layerCursor->second);
+ surface.mNativeLayers.erase(layerCursor);
+ mTotalTilePixelCount -= gfx::IntRect({}, layer->GetSize()).Area();
+
+ // If the layer is currently present in mNativeLayerRoot, it will be destroyed
+ // once CompositorEndFrame() replaces mNativeLayerRoot's layers and drops that
+ // reference. So until that happens, the layer still needs to hold on to its
+ // front buffer. However, we can tell it to drop its back buffers now, because
+ // we know that we will never draw to it again.
+ // Dropping the back buffers now puts them back in the surface pool, so those
+ // surfaces can be immediately re-used for drawing in other layers in the
+ // current frame.
+ layer->DiscardBackbuffers();
+}
+
+gfx::SamplingFilter ToSamplingFilter(wr::ImageRendering aImageRendering) {
+ if (aImageRendering == wr::ImageRendering::Auto) {
+ return gfx::SamplingFilter::LINEAR;
+ }
+ return gfx::SamplingFilter::POINT;
+}
+
+void RenderCompositorNative::AddSurface(
+ wr::NativeSurfaceId aId, const wr::CompositorSurfaceTransform& aTransform,
+ wr::DeviceIntRect aClipRect, wr::ImageRendering aImageRendering) {
+ MOZ_RELEASE_ASSERT(!mCurrentlyBoundNativeLayer);
+
+ auto surfaceCursor = mSurfaces.find(aId);
+ MOZ_RELEASE_ASSERT(surfaceCursor != mSurfaces.end());
+ const Surface& surface = surfaceCursor->second;
+
+ float sx = aTransform.scale.x;
+ float sy = aTransform.scale.y;
+ float tx = aTransform.offset.x;
+ float ty = aTransform.offset.y;
+ gfx::Matrix4x4 transform(sx, 0.0, 0.0, 0.0, 0.0, sy, 0.0, 0.0, 0.0, 0.0, 1.0,
+ 0.0, tx, ty, 0.0, 1.0);
+
+ for (auto it = surface.mNativeLayers.begin();
+ it != surface.mNativeLayers.end(); ++it) {
+ RefPtr<layers::NativeLayer> layer = it->second;
+ gfx::IntSize layerSize = layer->GetSize();
+ gfx::IntPoint layerPosition(surface.mTileSize.width * it->first.mX,
+ surface.mTileSize.height * it->first.mY);
+ layer->SetPosition(layerPosition);
+ gfx::IntRect clipRect(aClipRect.min.x, aClipRect.min.y, aClipRect.width(),
+ aClipRect.height());
+ layer->SetClipRect(Some(clipRect));
+ layer->SetTransform(transform);
+ layer->SetSamplingFilter(ToSamplingFilter(aImageRendering));
+ mAddedLayers.AppendElement(layer);
+
+ if (!surface.mIsExternal) {
+ mAddedTilePixelCount += layerSize.width * layerSize.height;
+ }
+ gfx::Rect r = transform.TransformBounds(
+ gfx::Rect(layer->CurrentSurfaceDisplayRect()));
+ gfx::IntRect visibleRect =
+ clipRect.Intersect(RoundedToInt(r) + layerPosition);
+ mAddedClippedPixelCount += visibleRect.Area();
+ }
+}
+
+/* static */
+UniquePtr<RenderCompositor> RenderCompositorNativeOGL::Create(
+ const RefPtr<widget::CompositorWidget>& aWidget, nsACString& aError) {
+ RefPtr<gl::GLContext> gl = RenderThread::Get()->SingletonGL();
+ if (!gl) {
+ gl = gl::GLContextProvider::CreateForCompositorWidget(
+ aWidget, /* aHardwareWebRender */ true, /* aForceAccelerated */ true);
+ RenderThread::MaybeEnableGLDebugMessage(gl);
+ }
+ if (!gl || !gl->MakeCurrent()) {
+ gfxCriticalNote << "Failed GL context creation for WebRender: "
+ << gfx::hexa(gl.get());
+ return nullptr;
+ }
+ return MakeUnique<RenderCompositorNativeOGL>(aWidget, std::move(gl));
+}
+
+RenderCompositorNativeOGL::RenderCompositorNativeOGL(
+ const RefPtr<widget::CompositorWidget>& aWidget,
+ RefPtr<gl::GLContext>&& aGL)
+ : RenderCompositorNative(aWidget, aGL), mGL(aGL) {
+ MOZ_ASSERT(mGL);
+}
+
+RenderCompositorNativeOGL::~RenderCompositorNativeOGL() {
+ if (!mGL->MakeCurrent()) {
+ gfxCriticalNote
+ << "Failed to make render context current during destroying.";
+ // Leak resources!
+ mPreviousFrameDoneSync = nullptr;
+ mThisFrameDoneSync = nullptr;
+ return;
+ }
+
+ if (mPreviousFrameDoneSync) {
+ mGL->fDeleteSync(mPreviousFrameDoneSync);
+ }
+ if (mThisFrameDoneSync) {
+ mGL->fDeleteSync(mThisFrameDoneSync);
+ }
+}
+
+bool RenderCompositorNativeOGL::InitDefaultFramebuffer(
+ const gfx::IntRect& aBounds) {
+ if (mNativeLayerForEntireWindow) {
+ Maybe<GLuint> fbo = mNativeLayerForEntireWindow->NextSurfaceAsFramebuffer(
+ aBounds, aBounds, true);
+ if (!fbo) {
+ return false;
+ }
+ mGL->fBindFramebuffer(LOCAL_GL_FRAMEBUFFER, *fbo);
+ } else {
+ mGL->fBindFramebuffer(LOCAL_GL_FRAMEBUFFER, mGL->GetDefaultFramebuffer());
+ }
+ return true;
+}
+
+void RenderCompositorNativeOGL::DoSwap() {
+ InsertFrameDoneSync();
+ if (mNativeLayerForEntireWindow) {
+ mGL->fFlush();
+ }
+}
+
+void RenderCompositorNativeOGL::DoFlush() { mGL->fFlush(); }
+
+void RenderCompositorNativeOGL::InsertFrameDoneSync() {
+#ifdef XP_MACOSX
+ // Only do this on macOS.
+ // On other platforms, SwapBuffers automatically applies back-pressure.
+ if (mThisFrameDoneSync) {
+ mGL->fDeleteSync(mThisFrameDoneSync);
+ }
+ mThisFrameDoneSync = mGL->fFenceSync(LOCAL_GL_SYNC_GPU_COMMANDS_COMPLETE, 0);
+#endif
+}
+
+bool RenderCompositorNativeOGL::WaitForGPU() {
+ if (mPreviousFrameDoneSync) {
+ AUTO_PROFILER_LABEL("Waiting for GPU to finish previous frame", GRAPHICS);
+ mGL->fClientWaitSync(mPreviousFrameDoneSync,
+ LOCAL_GL_SYNC_FLUSH_COMMANDS_BIT,
+ LOCAL_GL_TIMEOUT_IGNORED);
+ mGL->fDeleteSync(mPreviousFrameDoneSync);
+ }
+ mPreviousFrameDoneSync = mThisFrameDoneSync;
+ mThisFrameDoneSync = nullptr;
+
+ return true;
+}
+
+void RenderCompositorNativeOGL::Bind(wr::NativeTileId aId,
+ wr::DeviceIntPoint* aOffset,
+ uint32_t* aFboId,
+ wr::DeviceIntRect aDirtyRect,
+ wr::DeviceIntRect aValidRect) {
+ gfx::IntRect validRect(aValidRect.min.x, aValidRect.min.y, aValidRect.width(),
+ aValidRect.height());
+ gfx::IntRect dirtyRect(aDirtyRect.min.x, aDirtyRect.min.y, aDirtyRect.width(),
+ aDirtyRect.height());
+
+ BindNativeLayer(aId, dirtyRect);
+
+ Maybe<GLuint> fbo = mCurrentlyBoundNativeLayer->NextSurfaceAsFramebuffer(
+ validRect, dirtyRect, true);
+
+ *aFboId = *fbo;
+ *aOffset = wr::DeviceIntPoint{0, 0};
+}
+
+void RenderCompositorNativeOGL::Unbind() {
+ mGL->fBindFramebuffer(LOCAL_GL_FRAMEBUFFER, 0);
+
+ UnbindNativeLayer();
+}
+
+/* static */
+UniquePtr<RenderCompositor> RenderCompositorNativeSWGL::Create(
+ const RefPtr<widget::CompositorWidget>& aWidget, nsACString& aError) {
+ void* ctx = wr_swgl_create_context();
+ if (!ctx) {
+ gfxCriticalNote << "Failed SWGL context creation for WebRender";
+ return nullptr;
+ }
+ return MakeUnique<RenderCompositorNativeSWGL>(aWidget, ctx);
+}
+
+RenderCompositorNativeSWGL::RenderCompositorNativeSWGL(
+ const RefPtr<widget::CompositorWidget>& aWidget, void* aContext)
+ : RenderCompositorNative(aWidget), mContext(aContext) {
+ MOZ_ASSERT(mContext);
+}
+
+RenderCompositorNativeSWGL::~RenderCompositorNativeSWGL() {
+ wr_swgl_destroy_context(mContext);
+}
+
+bool RenderCompositorNativeSWGL::MakeCurrent() {
+ wr_swgl_make_current(mContext);
+ return true;
+}
+
+bool RenderCompositorNativeSWGL::InitDefaultFramebuffer(
+ const gfx::IntRect& aBounds) {
+ if (mNativeLayerForEntireWindow) {
+ if (!MapNativeLayer(mNativeLayerForEntireWindow, aBounds, aBounds)) {
+ return false;
+ }
+ wr_swgl_init_default_framebuffer(mContext, aBounds.x, aBounds.y,
+ aBounds.width, aBounds.height,
+ mLayerStride, mLayerValidRectData);
+ }
+ return true;
+}
+
+void RenderCompositorNativeSWGL::CancelFrame() {
+ if (mNativeLayerForEntireWindow && mLayerTarget) {
+ wr_swgl_init_default_framebuffer(mContext, 0, 0, 0, 0, 0, nullptr);
+ UnmapNativeLayer();
+ }
+}
+
+void RenderCompositorNativeSWGL::DoSwap() {
+ if (mNativeLayerForEntireWindow && mLayerTarget) {
+ wr_swgl_init_default_framebuffer(mContext, 0, 0, 0, 0, 0, nullptr);
+ UnmapNativeLayer();
+ }
+}
+
+bool RenderCompositorNativeSWGL::MapNativeLayer(
+ layers::NativeLayer* aLayer, const gfx::IntRect& aDirtyRect,
+ const gfx::IntRect& aValidRect) {
+ uint8_t* data = nullptr;
+ gfx::IntSize size;
+ int32_t stride = 0;
+ gfx::SurfaceFormat format = gfx::SurfaceFormat::UNKNOWN;
+ RefPtr<gfx::DrawTarget> dt = aLayer->NextSurfaceAsDrawTarget(
+ aValidRect, gfx::IntRegion(aDirtyRect), gfx::BackendType::SKIA);
+ if (!dt || !dt->LockBits(&data, &size, &stride, &format)) {
+ return false;
+ }
+ MOZ_ASSERT(format == gfx::SurfaceFormat::B8G8R8A8 ||
+ format == gfx::SurfaceFormat::B8G8R8X8);
+ mLayerTarget = std::move(dt);
+ mLayerData = data;
+ mLayerValidRectData = data + aValidRect.y * stride + aValidRect.x * 4;
+ mLayerStride = stride;
+ return true;
+}
+
+void RenderCompositorNativeSWGL::UnmapNativeLayer() {
+ MOZ_ASSERT(mLayerTarget && mLayerData);
+ mLayerTarget->ReleaseBits(mLayerData);
+ mLayerTarget = nullptr;
+ mLayerData = nullptr;
+ mLayerValidRectData = nullptr;
+ mLayerStride = 0;
+}
+
+bool RenderCompositorNativeSWGL::MapTile(wr::NativeTileId aId,
+ wr::DeviceIntRect aDirtyRect,
+ wr::DeviceIntRect aValidRect,
+ void** aData, int32_t* aStride) {
+ if (mNativeLayerForEntireWindow) {
+ return false;
+ }
+ gfx::IntRect dirtyRect(aDirtyRect.min.x, aDirtyRect.min.y, aDirtyRect.width(),
+ aDirtyRect.height());
+ gfx::IntRect validRect(aValidRect.min.x, aValidRect.min.y, aValidRect.width(),
+ aValidRect.height());
+ BindNativeLayer(aId, dirtyRect);
+ if (!MapNativeLayer(mCurrentlyBoundNativeLayer, dirtyRect, validRect)) {
+ UnbindNativeLayer();
+ return false;
+ }
+ *aData = mLayerValidRectData;
+ *aStride = mLayerStride;
+ return true;
+}
+
+void RenderCompositorNativeSWGL::UnmapTile() {
+ if (!mNativeLayerForEntireWindow && mCurrentlyBoundNativeLayer) {
+ UnmapNativeLayer();
+ UnbindNativeLayer();
+ }
+}
+
+} // namespace mozilla::wr