gfx/webrender_bindings/RenderCompositorNative.cpp

   1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
   2 /* vim: set ts=8 sts=2 et sw=2 tw=80: */
   3 /* This Source Code Form is subject to the terms of the Mozilla Public
   4  * License, v. 2.0. If a copy of the MPL was not distributed with this
   5  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
   6
   7 #include "RenderCompositorNative.h"
   8
   9 #include "GLContext.h"
  10 #include "GLContextProvider.h"
  11 #include "mozilla/ProfilerLabels.h"
  12 #include "mozilla/ProfilerMarkers.h"
  13 #include "mozilla/gfx/gfxVars.h"
  14 #include "mozilla/gfx/Logging.h"
  15 #include "mozilla/layers/CompositionRecorder.h"
  16 #include "mozilla/layers/NativeLayer.h"
  17 #include "mozilla/layers/SurfacePool.h"
  18 #include "mozilla/StaticPrefs_gfx.h"
  19 #include "mozilla/webrender/RenderThread.h"
  20 #include "mozilla/widget/CompositorWidget.h"
  21 #include "RenderCompositorRecordedFrame.h"
  22
  23 namespace mozilla::wr {
  24
  25 extern LazyLogModule gRenderThreadLog;
  26 #define LOG(...) MOZ_LOG(gRenderThreadLog, LogLevel::Debug, (__VA_ARGS__))
  27
  28 RenderCompositorNative::RenderCompositorNative(
  29     const RefPtr<widget::CompositorWidget>& aWidget, gl::GLContext* aGL)
  30     : RenderCompositor(aWidget),
  31       mNativeLayerRoot(GetWidget()->GetNativeLayerRoot()) {
  32   LOG("RenderCompositorNative::RenderCompositorNative()");
  33
  34 #if defined(XP_MACOSX) || defined(MOZ_WAYLAND)
  35   auto pool = RenderThread::Get()->SharedSurfacePool();
  36   if (pool) {
  37     mSurfacePoolHandle = pool->GetHandleForGL(aGL);
  38   }
  39 #endif
  40   MOZ_RELEASE_ASSERT(mSurfacePoolHandle);
  41 }
  42
  43 RenderCompositorNative::~RenderCompositorNative() {
  44   LOG("RRenderCompositorNative::~RenderCompositorNative()");
  45
  46   Pause();
  47   mProfilerScreenshotGrabber.Destroy();
  48   mNativeLayerRoot->SetLayers({});
  49   mNativeLayerForEntireWindow = nullptr;
  50   mNativeLayerRootSnapshotter = nullptr;
  51   mNativeLayerRoot = nullptr;
  52 }
  53
  54 bool RenderCompositorNative::BeginFrame() {
  55   if (!MakeCurrent()) {
  56     gfxCriticalNote << "Failed to make render context current, can't draw.";
  57     return false;
  58   }
  59
  60   gfx::IntSize bufferSize = GetBufferSize().ToUnknownSize();
  61   if (!ShouldUseNativeCompositor()) {
  62     if (bufferSize.IsEmpty()) {
  63       return false;
  64     }
  65     if (mNativeLayerForEntireWindow &&
  66         mNativeLayerForEntireWindow->GetSize() != bufferSize) {
  67       mNativeLayerRoot->RemoveLayer(mNativeLayerForEntireWindow);
  68       mNativeLayerForEntireWindow = nullptr;
  69     }
  70     if (!mNativeLayerForEntireWindow) {
  71       mNativeLayerForEntireWindow =
  72           mNativeLayerRoot->CreateLayer(bufferSize, false, mSurfacePoolHandle);
  73       mNativeLayerRoot->AppendLayer(mNativeLayerForEntireWindow);
  74     }
  75   }
  76
  77   gfx::IntRect bounds({}, bufferSize);
  78   if (!InitDefaultFramebuffer(bounds)) {
  79     return false;
  80   }
  81
  82   return true;
  83 }
  84
  85 RenderedFrameId RenderCompositorNative::EndFrame(
  86     const nsTArray<DeviceIntRect>& aDirtyRects) {
  87   RenderedFrameId frameId = GetNextRenderFrameId();
  88
  89   DoSwap();
  90
  91   if (mNativeLayerForEntireWindow) {
  92     mNativeLayerForEntireWindow->NotifySurfaceReady();
  93     mNativeLayerRoot->CommitToScreen();
  94   }
  95
  96   return frameId;
  97 }
  98
  99 void RenderCompositorNative::Pause() {}
 100
 101 bool RenderCompositorNative::Resume() { return true; }
 102
 103 inline layers::WebRenderCompositor RenderCompositorNative::CompositorType()
 104     const {
 105   if (gfx::gfxVars::UseWebRenderCompositor()) {
 106 #if defined(XP_MACOSX)
 107     return layers::WebRenderCompositor::CORE_ANIMATION;
 108 #elif defined(MOZ_WAYLAND)
 109     return layers::WebRenderCompositor::WAYLAND;
 110 #endif
 111   }
 112   return layers::WebRenderCompositor::DRAW;
 113 }
 114
 115 LayoutDeviceIntSize RenderCompositorNative::GetBufferSize() {
 116   return mWidget->GetClientSize();
 117 }
 118
 119 bool RenderCompositorNative::ShouldUseNativeCompositor() {
 120   return gfx::gfxVars::UseWebRenderCompositor();
 121 }
 122
 123 void RenderCompositorNative::GetCompositorCapabilities(
 124     CompositorCapabilities* aCaps) {
 125   RenderCompositor::GetCompositorCapabilities(aCaps);
 126 #if defined(XP_MACOSX)
 127   aCaps->supports_surface_for_backdrop = !gfx::gfxVars::UseSoftwareWebRender();
 128 #endif
 129 }
 130
 131 bool RenderCompositorNative::MaybeReadback(
 132     const gfx::IntSize& aReadbackSize, const wr::ImageFormat& aReadbackFormat,
 133     const Range<uint8_t>& aReadbackBuffer, bool* aNeedsYFlip) {
 134   if (!ShouldUseNativeCompositor()) {
 135     return false;
 136   }
 137
 138   MOZ_RELEASE_ASSERT(aReadbackFormat == wr::ImageFormat::BGRA8);
 139   if (!mNativeLayerRootSnapshotter) {
 140     mNativeLayerRootSnapshotter = mNativeLayerRoot->CreateSnapshotter();
 141
 142     if (!mNativeLayerRootSnapshotter) {
 143       return false;
 144     }
 145   }
 146   bool success = mNativeLayerRootSnapshotter->ReadbackPixels(
 147       aReadbackSize, gfx::SurfaceFormat::B8G8R8A8, aReadbackBuffer);
 148
 149   // ReadbackPixels might have changed the current context. Make sure GL is
 150   // current again.
 151   MakeCurrent();
 152
 153   if (aNeedsYFlip) {
 154     *aNeedsYFlip = true;
 155   }
 156
 157   return success;
 158 }
 159
 160 bool RenderCompositorNative::MaybeRecordFrame(
 161     layers::CompositionRecorder& aRecorder) {
 162   if (!ShouldUseNativeCompositor()) {
 163     return false;
 164   }
 165
 166   if (!mNativeLayerRootSnapshotter) {
 167     mNativeLayerRootSnapshotter = mNativeLayerRoot->CreateSnapshotter();
 168   }
 169
 170   if (!mNativeLayerRootSnapshotter) {
 171     return true;
 172   }
 173
 174   gfx::IntSize size = GetBufferSize().ToUnknownSize();
 175   RefPtr<layers::profiler_screenshots::RenderSource> snapshot =
 176       mNativeLayerRootSnapshotter->GetWindowContents(size);
 177   if (!snapshot) {
 178     return true;
 179   }
 180
 181   RefPtr<layers::profiler_screenshots::AsyncReadbackBuffer> buffer =
 182       mNativeLayerRootSnapshotter->CreateAsyncReadbackBuffer(size);
 183   buffer->CopyFrom(snapshot);
 184
 185   RefPtr<layers::RecordedFrame> frame =
 186       new RenderCompositorRecordedFrame(TimeStamp::Now(), std::move(buffer));
 187   aRecorder.RecordFrame(frame);
 188
 189   // GetWindowContents might have changed the current context. Make sure our
 190   // context is current again.
 191   MakeCurrent();
 192   return true;
 193 }
 194
 195 bool RenderCompositorNative::MaybeGrabScreenshot(
 196     const gfx::IntSize& aWindowSize) {
 197   if (!ShouldUseNativeCompositor()) {
 198     return false;
 199   }
 200
 201   if (!mNativeLayerRootSnapshotter) {
 202     mNativeLayerRootSnapshotter = mNativeLayerRoot->CreateSnapshotter();
 203   }
 204
 205   if (mNativeLayerRootSnapshotter) {
 206     mProfilerScreenshotGrabber.MaybeGrabScreenshot(*mNativeLayerRootSnapshotter,
 207                                                    aWindowSize);
 208
 209     // MaybeGrabScreenshot might have changed the current context. Make sure our
 210     // context is current again.
 211     MakeCurrent();
 212   }
 213
 214   return true;
 215 }
 216
 217 bool RenderCompositorNative::MaybeProcessScreenshotQueue() {
 218   if (!ShouldUseNativeCompositor()) {
 219     return false;
 220   }
 221
 222   mProfilerScreenshotGrabber.MaybeProcessQueue();
 223
 224   // MaybeProcessQueue might have changed the current context. Make sure our
 225   // context is current again.
 226   MakeCurrent();
 227
 228   return true;
 229 }
 230
 231 void RenderCompositorNative::CompositorBeginFrame() {
 232   mAddedLayers.Clear();
 233   mAddedTilePixelCount = 0;
 234   mAddedClippedPixelCount = 0;
 235   mBeginFrameTimeStamp = TimeStamp::Now();
 236   mSurfacePoolHandle->OnBeginFrame();
 237   mNativeLayerRoot->PrepareForCommit();
 238 }
 239
 240 void RenderCompositorNative::CompositorEndFrame() {
 241   if (profiler_thread_is_being_profiled_for_markers()) {
 242     auto bufferSize = GetBufferSize();
 243     [[maybe_unused]] uint64_t windowPixelCount =
 244         uint64_t(bufferSize.width) * bufferSize.height;
 245     int nativeLayerCount = 0;
 246     for (const auto& it : mSurfaces) {
 247       nativeLayerCount += int(it.second.mNativeLayers.size());
 248     }
 249     PROFILER_MARKER_TEXT(
 250         "WR OS Compositor frame", GRAPHICS,
 251         MarkerTiming::IntervalUntilNowFrom(mBeginFrameTimeStamp),
 252         nsPrintfCString("%d%% painting, %d%% overdraw, %d used "
 253                         "layers (%d%% memory) + %d unused layers (%d%% memory)",
 254                         int(mDrawnPixelCount * 100 / windowPixelCount),
 255                         int(mAddedClippedPixelCount * 100 / windowPixelCount),
 256                         int(mAddedLayers.Length()),
 257                         int(mAddedTilePixelCount * 100 / windowPixelCount),
 258                         int(nativeLayerCount - mAddedLayers.Length()),
 259                         int((mTotalTilePixelCount - mAddedTilePixelCount) *
 260                             100 / windowPixelCount)));
 261   }
 262   mDrawnPixelCount = 0;
 263
 264   DoFlush();
 265
 266   mNativeLayerRoot->SetLayers(mAddedLayers);
 267   mNativeLayerRoot->CommitToScreen();
 268   mSurfacePoolHandle->OnEndFrame();
 269 }
 270
 271 void RenderCompositorNative::BindNativeLayer(wr::NativeTileId aId,
 272                                              const gfx::IntRect& aDirtyRect) {
 273   MOZ_RELEASE_ASSERT(!mCurrentlyBoundNativeLayer);
 274
 275   auto surfaceCursor = mSurfaces.find(aId.surface_id);
 276   MOZ_RELEASE_ASSERT(surfaceCursor != mSurfaces.end());
 277   Surface& surface = surfaceCursor->second;
 278
 279   auto layerCursor = surface.mNativeLayers.find(TileKey(aId.x, aId.y));
 280   MOZ_RELEASE_ASSERT(layerCursor != surface.mNativeLayers.end());
 281   RefPtr<layers::NativeLayer> layer = layerCursor->second;
 282
 283   mCurrentlyBoundNativeLayer = layer;
 284
 285   mDrawnPixelCount += aDirtyRect.Area();
 286 }
 287
 288 void RenderCompositorNative::UnbindNativeLayer() {
 289   MOZ_RELEASE_ASSERT(mCurrentlyBoundNativeLayer);
 290
 291   mCurrentlyBoundNativeLayer->NotifySurfaceReady();
 292   mCurrentlyBoundNativeLayer = nullptr;
 293 }
 294
 295 void RenderCompositorNative::CreateSurface(wr::NativeSurfaceId aId,
 296                                            wr::DeviceIntPoint aVirtualOffset,
 297                                            wr::DeviceIntSize aTileSize,
 298                                            bool aIsOpaque) {
 299   MOZ_RELEASE_ASSERT(mSurfaces.find(aId) == mSurfaces.end());
 300   mSurfaces.insert({aId, Surface{aTileSize, aIsOpaque}});
 301 }
 302
 303 void RenderCompositorNative::CreateExternalSurface(wr::NativeSurfaceId aId,
 304                                                    bool aIsOpaque) {
 305   MOZ_RELEASE_ASSERT(mSurfaces.find(aId) == mSurfaces.end());
 306
 307   RefPtr<layers::NativeLayer> layer =
 308       mNativeLayerRoot->CreateLayerForExternalTexture(aIsOpaque);
 309
 310   Surface surface{DeviceIntSize{}, aIsOpaque};
 311   surface.mIsExternal = true;
 312   surface.mNativeLayers.insert({TileKey(0, 0), layer});
 313
 314   mSurfaces.insert({aId, std::move(surface)});
 315 }
 316
 317 void RenderCompositorNative::CreateBackdropSurface(wr::NativeSurfaceId aId,
 318                                                    wr::ColorF aColor) {
 319   MOZ_RELEASE_ASSERT(mSurfaces.find(aId) == mSurfaces.end());
 320
 321   gfx::DeviceColor color(aColor.r, aColor.g, aColor.b, aColor.a);
 322   RefPtr<layers::NativeLayer> layer =
 323       mNativeLayerRoot->CreateLayerForColor(color);
 324
 325   Surface surface{DeviceIntSize{}, (aColor.a >= 1.0f)};
 326   surface.mNativeLayers.insert({TileKey(0, 0), layer});
 327
 328   mSurfaces.insert({aId, std::move(surface)});
 329 }
 330
 331 void RenderCompositorNative::AttachExternalImage(
 332     wr::NativeSurfaceId aId, wr::ExternalImageId aExternalImage) {
 333   RenderTextureHost* image =
 334       RenderThread::Get()->GetRenderTexture(aExternalImage);
 335   MOZ_RELEASE_ASSERT(image);
 336
 337   auto surfaceCursor = mSurfaces.find(aId);
 338   MOZ_RELEASE_ASSERT(surfaceCursor != mSurfaces.end());
 339
 340   Surface& surface = surfaceCursor->second;
 341   MOZ_RELEASE_ASSERT(surface.mNativeLayers.size() == 1);
 342   MOZ_RELEASE_ASSERT(surface.mIsExternal);
 343   surface.mNativeLayers.begin()->second->AttachExternalImage(image);
 344 }
 345
 346 void RenderCompositorNative::DestroySurface(NativeSurfaceId aId) {
 347   auto surfaceCursor = mSurfaces.find(aId);
 348   MOZ_RELEASE_ASSERT(surfaceCursor != mSurfaces.end());
 349
 350   Surface& surface = surfaceCursor->second;
 351   if (!surface.mIsExternal) {
 352     for (const auto& iter : surface.mNativeLayers) {
 353       mTotalTilePixelCount -= gfx::IntRect({}, iter.second->GetSize()).Area();
 354     }
 355   }
 356
 357   mSurfaces.erase(surfaceCursor);
 358 }
 359
 360 void RenderCompositorNative::CreateTile(wr::NativeSurfaceId aId, int aX,
 361                                         int aY) {
 362   auto surfaceCursor = mSurfaces.find(aId);
 363   MOZ_RELEASE_ASSERT(surfaceCursor != mSurfaces.end());
 364   Surface& surface = surfaceCursor->second;
 365   MOZ_RELEASE_ASSERT(!surface.mIsExternal);
 366
 367   RefPtr<layers::NativeLayer> layer = mNativeLayerRoot->CreateLayer(
 368       surface.TileSize(), surface.mIsOpaque, mSurfacePoolHandle);
 369   surface.mNativeLayers.insert({TileKey(aX, aY), layer});
 370   mTotalTilePixelCount += gfx::IntRect({}, layer->GetSize()).Area();
 371 }
 372
 373 void RenderCompositorNative::DestroyTile(wr::NativeSurfaceId aId, int aX,
 374                                          int aY) {
 375   auto surfaceCursor = mSurfaces.find(aId);
 376   MOZ_RELEASE_ASSERT(surfaceCursor != mSurfaces.end());
 377   Surface& surface = surfaceCursor->second;
 378   MOZ_RELEASE_ASSERT(!surface.mIsExternal);
 379
 380   auto layerCursor = surface.mNativeLayers.find(TileKey(aX, aY));
 381   MOZ_RELEASE_ASSERT(layerCursor != surface.mNativeLayers.end());
 382   RefPtr<layers::NativeLayer> layer = std::move(layerCursor->second);
 383   surface.mNativeLayers.erase(layerCursor);
 384   mTotalTilePixelCount -= gfx::IntRect({}, layer->GetSize()).Area();
 385
 386   // If the layer is currently present in mNativeLayerRoot, it will be destroyed
 387   // once CompositorEndFrame() replaces mNativeLayerRoot's layers and drops that
 388   // reference. So until that happens, the layer still needs to hold on to its
 389   // front buffer. However, we can tell it to drop its back buffers now, because
 390   // we know that we will never draw to it again.
 391   // Dropping the back buffers now puts them back in the surface pool, so those
 392   // surfaces can be immediately re-used for drawing in other layers in the
 393   // current frame.
 394   layer->DiscardBackbuffers();
 395 }
 396
 397 gfx::SamplingFilter ToSamplingFilter(wr::ImageRendering aImageRendering) {
 398   if (aImageRendering == wr::ImageRendering::Auto) {
 399     return gfx::SamplingFilter::LINEAR;
 400   }
 401   return gfx::SamplingFilter::POINT;
 402 }
 403
 404 void RenderCompositorNative::AddSurface(
 405     wr::NativeSurfaceId aId, const wr::CompositorSurfaceTransform& aTransform,
 406     wr::DeviceIntRect aClipRect, wr::ImageRendering aImageRendering) {
 407   MOZ_RELEASE_ASSERT(!mCurrentlyBoundNativeLayer);
 408
 409   auto surfaceCursor = mSurfaces.find(aId);
 410   MOZ_RELEASE_ASSERT(surfaceCursor != mSurfaces.end());
 411   const Surface& surface = surfaceCursor->second;
 412
 413   float sx = aTransform.scale.x;
 414   float sy = aTransform.scale.y;
 415   float tx = aTransform.offset.x;
 416   float ty = aTransform.offset.y;
 417   gfx::Matrix4x4 transform(sx, 0.0, 0.0, 0.0, 0.0, sy, 0.0, 0.0, 0.0, 0.0, 1.0,
 418                            0.0, tx, ty, 0.0, 1.0);
 419
 420   for (auto it = surface.mNativeLayers.begin();
 421        it != surface.mNativeLayers.end(); ++it) {
 422     RefPtr<layers::NativeLayer> layer = it->second;
 423     gfx::IntSize layerSize = layer->GetSize();
 424     gfx::IntPoint layerPosition(surface.mTileSize.width * it->first.mX,
 425                                 surface.mTileSize.height * it->first.mY);
 426     layer->SetPosition(layerPosition);
 427     gfx::IntRect clipRect(aClipRect.min.x, aClipRect.min.y, aClipRect.width(),
 428                           aClipRect.height());
 429     layer->SetClipRect(Some(clipRect));
 430     layer->SetTransform(transform);
 431     layer->SetSamplingFilter(ToSamplingFilter(aImageRendering));
 432     mAddedLayers.AppendElement(layer);
 433
 434     if (!surface.mIsExternal) {
 435       mAddedTilePixelCount += layerSize.width * layerSize.height;
 436     }
 437     gfx::Rect r = transform.TransformBounds(
 438         gfx::Rect(layer->CurrentSurfaceDisplayRect()));
 439     gfx::IntRect visibleRect =
 440         clipRect.Intersect(RoundedToInt(r) + layerPosition);
 441     mAddedClippedPixelCount += visibleRect.Area();
 442   }
 443 }
 444
 445 /* static */
 446 UniquePtr<RenderCompositor> RenderCompositorNativeOGL::Create(
 447     const RefPtr<widget::CompositorWidget>& aWidget, nsACString& aError) {
 448   RefPtr<gl::GLContext> gl = RenderThread::Get()->SingletonGL();
 449   if (!gl) {
 450     gl = gl::GLContextProvider::CreateForCompositorWidget(
 451         aWidget, /* aHardwareWebRender */ true, /* aForceAccelerated */ true);
 452     RenderThread::MaybeEnableGLDebugMessage(gl);
 453   }
 454   if (!gl || !gl->MakeCurrent()) {
 455     gfxCriticalNote << "Failed GL context creation for WebRender: "
 456                     << gfx::hexa(gl.get());
 457     return nullptr;
 458   }
 459   return MakeUnique<RenderCompositorNativeOGL>(aWidget, std::move(gl));
 460 }
 461
 462 RenderCompositorNativeOGL::RenderCompositorNativeOGL(
 463     const RefPtr<widget::CompositorWidget>& aWidget,
 464     RefPtr<gl::GLContext>&& aGL)
 465     : RenderCompositorNative(aWidget, aGL), mGL(aGL) {
 466   MOZ_ASSERT(mGL);
 467 }
 468
 469 RenderCompositorNativeOGL::~RenderCompositorNativeOGL() {
 470   if (!mGL->MakeCurrent()) {
 471     gfxCriticalNote
 472         << "Failed to make render context current during destroying.";
 473     // Leak resources!
 474     mPreviousFrameDoneSync = nullptr;
 475     mThisFrameDoneSync = nullptr;
 476     return;
 477   }
 478
 479   if (mPreviousFrameDoneSync) {
 480     mGL->fDeleteSync(mPreviousFrameDoneSync);
 481   }
 482   if (mThisFrameDoneSync) {
 483     mGL->fDeleteSync(mThisFrameDoneSync);
 484   }
 485 }
 486
 487 bool RenderCompositorNativeOGL::InitDefaultFramebuffer(
 488     const gfx::IntRect& aBounds) {
 489   if (mNativeLayerForEntireWindow) {
 490     Maybe<GLuint> fbo = mNativeLayerForEntireWindow->NextSurfaceAsFramebuffer(
 491         aBounds, aBounds, true);
 492     if (!fbo) {
 493       return false;
 494     }
 495     mGL->fBindFramebuffer(LOCAL_GL_FRAMEBUFFER, *fbo);
 496   } else {
 497     mGL->fBindFramebuffer(LOCAL_GL_FRAMEBUFFER, mGL->GetDefaultFramebuffer());
 498   }
 499   return true;
 500 }
 501
 502 void RenderCompositorNativeOGL::DoSwap() {
 503   InsertFrameDoneSync();
 504   if (mNativeLayerForEntireWindow) {
 505     mGL->fFlush();
 506   }
 507 }
 508
 509 void RenderCompositorNativeOGL::DoFlush() { mGL->fFlush(); }
 510
 511 void RenderCompositorNativeOGL::InsertFrameDoneSync() {
 512 #ifdef XP_MACOSX
 513   // Only do this on macOS.
 514   // On other platforms, SwapBuffers automatically applies back-pressure.
 515   if (mThisFrameDoneSync) {
 516     mGL->fDeleteSync(mThisFrameDoneSync);
 517   }
 518   mThisFrameDoneSync = mGL->fFenceSync(LOCAL_GL_SYNC_GPU_COMMANDS_COMPLETE, 0);
 519 #endif
 520 }
 521
 522 bool RenderCompositorNativeOGL::WaitForGPU() {
 523   if (mPreviousFrameDoneSync) {
 524     AUTO_PROFILER_LABEL("Waiting for GPU to finish previous frame", GRAPHICS);
 525     mGL->fClientWaitSync(mPreviousFrameDoneSync,
 526                          LOCAL_GL_SYNC_FLUSH_COMMANDS_BIT,
 527                          LOCAL_GL_TIMEOUT_IGNORED);
 528     mGL->fDeleteSync(mPreviousFrameDoneSync);
 529   }
 530   mPreviousFrameDoneSync = mThisFrameDoneSync;
 531   mThisFrameDoneSync = nullptr;
 532
 533   return true;
 534 }
 535
 536 void RenderCompositorNativeOGL::Bind(wr::NativeTileId aId,
 537                                      wr::DeviceIntPoint* aOffset,
 538                                      uint32_t* aFboId,
 539                                      wr::DeviceIntRect aDirtyRect,
 540                                      wr::DeviceIntRect aValidRect) {
 541   gfx::IntRect validRect(aValidRect.min.x, aValidRect.min.y, aValidRect.width(),
 542                          aValidRect.height());
 543   gfx::IntRect dirtyRect(aDirtyRect.min.x, aDirtyRect.min.y, aDirtyRect.width(),
 544                          aDirtyRect.height());
 545
 546   BindNativeLayer(aId, dirtyRect);
 547
 548   Maybe<GLuint> fbo = mCurrentlyBoundNativeLayer->NextSurfaceAsFramebuffer(
 549       validRect, dirtyRect, true);
 550
 551   *aFboId = *fbo;
 552   *aOffset = wr::DeviceIntPoint{0, 0};
 553 }
 554
 555 void RenderCompositorNativeOGL::Unbind() {
 556   mGL->fBindFramebuffer(LOCAL_GL_FRAMEBUFFER, 0);
 557
 558   UnbindNativeLayer();
 559 }
 560
 561 /* static */
 562 UniquePtr<RenderCompositor> RenderCompositorNativeSWGL::Create(
 563     const RefPtr<widget::CompositorWidget>& aWidget, nsACString& aError) {
 564   void* ctx = wr_swgl_create_context();
 565   if (!ctx) {
 566     gfxCriticalNote << "Failed SWGL context creation for WebRender";
 567     return nullptr;
 568   }
 569   return MakeUnique<RenderCompositorNativeSWGL>(aWidget, ctx);
 570 }
 571
 572 RenderCompositorNativeSWGL::RenderCompositorNativeSWGL(
 573     const RefPtr<widget::CompositorWidget>& aWidget, void* aContext)
 574     : RenderCompositorNative(aWidget), mContext(aContext) {
 575   MOZ_ASSERT(mContext);
 576 }
 577
 578 RenderCompositorNativeSWGL::~RenderCompositorNativeSWGL() {
 579   wr_swgl_destroy_context(mContext);
 580 }
 581
 582 bool RenderCompositorNativeSWGL::MakeCurrent() {
 583   wr_swgl_make_current(mContext);
 584   return true;
 585 }
 586
 587 bool RenderCompositorNativeSWGL::InitDefaultFramebuffer(
 588     const gfx::IntRect& aBounds) {
 589   if (mNativeLayerForEntireWindow) {
 590     if (!MapNativeLayer(mNativeLayerForEntireWindow, aBounds, aBounds)) {
 591       return false;
 592     }
 593     wr_swgl_init_default_framebuffer(mContext, aBounds.x, aBounds.y,
 594                                      aBounds.width, aBounds.height,
 595                                      mLayerStride, mLayerValidRectData);
 596   }
 597   return true;
 598 }
 599
 600 void RenderCompositorNativeSWGL::CancelFrame() {
 601   if (mNativeLayerForEntireWindow && mLayerTarget) {
 602     wr_swgl_init_default_framebuffer(mContext, 0, 0, 0, 0, 0, nullptr);
 603     UnmapNativeLayer();
 604   }
 605 }
 606
 607 void RenderCompositorNativeSWGL::DoSwap() {
 608   if (mNativeLayerForEntireWindow && mLayerTarget) {
 609     wr_swgl_init_default_framebuffer(mContext, 0, 0, 0, 0, 0, nullptr);
 610     UnmapNativeLayer();
 611   }
 612 }
 613
 614 bool RenderCompositorNativeSWGL::MapNativeLayer(
 615     layers::NativeLayer* aLayer, const gfx::IntRect& aDirtyRect,
 616     const gfx::IntRect& aValidRect) {
 617   uint8_t* data = nullptr;
 618   gfx::IntSize size;
 619   int32_t stride = 0;
 620   gfx::SurfaceFormat format = gfx::SurfaceFormat::UNKNOWN;
 621   RefPtr<gfx::DrawTarget> dt = aLayer->NextSurfaceAsDrawTarget(
 622       aValidRect, gfx::IntRegion(aDirtyRect), gfx::BackendType::SKIA);
 623   if (!dt || !dt->LockBits(&data, &size, &stride, &format)) {
 624     return false;
 625   }
 626   MOZ_ASSERT(format == gfx::SurfaceFormat::B8G8R8A8 ||
 627              format == gfx::SurfaceFormat::B8G8R8X8);
 628   mLayerTarget = std::move(dt);
 629   mLayerData = data;
 630   mLayerValidRectData = data + aValidRect.y * stride + aValidRect.x * 4;
 631   mLayerStride = stride;
 632   return true;
 633 }
 634
 635 void RenderCompositorNativeSWGL::UnmapNativeLayer() {
 636   MOZ_ASSERT(mLayerTarget && mLayerData);
 637   mLayerTarget->ReleaseBits(mLayerData);
 638   mLayerTarget = nullptr;
 639   mLayerData = nullptr;
 640   mLayerValidRectData = nullptr;
 641   mLayerStride = 0;
 642 }
 643
 644 bool RenderCompositorNativeSWGL::MapTile(wr::NativeTileId aId,
 645                                          wr::DeviceIntRect aDirtyRect,
 646                                          wr::DeviceIntRect aValidRect,
 647                                          void** aData, int32_t* aStride) {
 648   if (mNativeLayerForEntireWindow) {
 649     return false;
 650   }
 651   gfx::IntRect dirtyRect(aDirtyRect.min.x, aDirtyRect.min.y, aDirtyRect.width(),
 652                          aDirtyRect.height());
 653   gfx::IntRect validRect(aValidRect.min.x, aValidRect.min.y, aValidRect.width(),
 654                          aValidRect.height());
 655   BindNativeLayer(aId, dirtyRect);
 656   if (!MapNativeLayer(mCurrentlyBoundNativeLayer, dirtyRect, validRect)) {
 657     UnbindNativeLayer();
 658     return false;
 659   }
 660   *aData = mLayerValidRectData;
 661   *aStride = mLayerStride;
 662   return true;
 663 }
 664
 665 void RenderCompositorNativeSWGL::UnmapTile() {
 666   if (!mNativeLayerForEntireWindow && mCurrentlyBoundNativeLayer) {
 667     UnmapNativeLayer();
 668     UnbindNativeLayer();
 669   }
 670 }
 671
 672 }  // namespace mozilla::wr