C++ CompositorOGL类代码示例

already_AddRefed<DataSourceSurface>
CompositingRenderTargetOGL::Dump(Compositor* aCompositor)
{
  MOZ_ASSERT(mInitParams.mStatus == InitParams::INITIALIZED);
  CompositorOGL* compositorOGL = aCompositor->AsCompositorOGL();
  return ReadBackSurface(mGL, mTextureHandle, true, compositorOGL->GetFBOFormat());
}

TemporaryRef<DataSourceSurface>
CompositingRenderTargetOGL::Dump(Compositor* aCompositor)
{
  MOZ_ASSERT(mInitParams.mStatus == InitParams::INITIALIZED);
  CompositorOGL* compositorOGL = static_cast<CompositorOGL*>(aCompositor);
  return ReadBackSurface(mGL, mTextureHandle, true, compositorOGL->GetFBOFormat());
}

void
TiledDeprecatedTextureHostOGL::SetCompositor(Compositor* aCompositor)
{
  CompositorOGL* glCompositor = static_cast<CompositorOGL*>(aCompositor);
  if (mGL && !glCompositor) {
    DeleteTextures();
  }
  mGL = glCompositor ? glCompositor->gl() : nullptr;
}

void
TextureImageTextureSourceOGL::SetCompositor(Compositor* aCompositor)
{
  CompositorOGL* glCompositor = static_cast<CompositorOGL*>(aCompositor);

  if (!glCompositor || (mGL != glCompositor->gl())) {
    DeallocateDeviceData();
    mGL = glCompositor ? glCompositor->gl() : nullptr;
  }
}

void
YCbCrDeprecatedTextureHostOGL::SetCompositor(Compositor* aCompositor)
{
  CompositorOGL* glCompositor = static_cast<CompositorOGL*>(aCompositor);
  GLContext* newGL = glCompositor ? glCompositor->gl() : nullptr;
  if (mGL != newGL) {
    mGL = newGL;
    mYTexture->mTexImage = nullptr;
    mCbTexture->mTexImage = nullptr;
    mCrTexture->mTexImage = nullptr;
    // if we have a buffer we reupload it with the new gl context
    if (newGL && mBuffer && mBuffer->type() == SurfaceDescriptor::TYCbCrImage) {
      UpdateImpl(*mBuffer);
    }
  }
}

bool
StreamTextureHost::Lock()
{
  if (!mCompositor) {
    return false;
  }

  gfx::SharedSurface* abstractSurf = mStream->SwapConsumer();

  bool compositorSupportsShSurfType = false;
  switch (mCompositor->GetBackendType()) {
    case LayersBackend::LAYERS_BASIC:
    case LayersBackend::LAYERS_D3D9:
    case LayersBackend::LAYERS_D3D10:
      switch (abstractSurf->Type()) {
        case gfx::SharedSurfaceType::Basic:
          compositorSupportsShSurfType = true;
          break;
        default:
          break;
      }
      break;
    case LayersBackend::LAYERS_OPENGL:
      switch (abstractSurf->Type()) {
        case gfx::SharedSurfaceType::Basic:
        case gfx::SharedSurfaceType::GLTextureShare:
        case gfx::SharedSurfaceType::EGLImageShare:
        case gfx::SharedSurfaceType::Gralloc:
        case gfx::SharedSurfaceType::IOSurface:
          compositorSupportsShSurfType = true;
          break;
        default:
          break;
      }
      break;
    case LayersBackend::LAYERS_D3D11:
      switch (abstractSurf->Type()) {
        case gfx::SharedSurfaceType::Basic:
        case gfx::SharedSurfaceType::EGLSurfaceANGLE:
          compositorSupportsShSurfType = true;
          break;
        default:
          break;
      }
      break;
    default:
      break;
  }

  RefPtr<NewTextureSource> newTexSource;
  if (compositorSupportsShSurfType) {
    gfx::SurfaceFormat format = abstractSurf->HasAlpha() ? gfx::SurfaceFormat::R8G8B8A8
                                                         : gfx::SurfaceFormat::R8G8B8X8;

    switch (abstractSurf->Type()) {
      case gfx::SharedSurfaceType::Basic: {
        gl::SharedSurface_Basic* surf = gl::SharedSurface_Basic::Cast(abstractSurf);

        if (!this->mDataTextureSource) {
          TextureFlags flags = TextureFlags::DEALLOCATE_CLIENT;
          this->mDataTextureSource = mCompositor->CreateDataTextureSource(flags);
        }
        this->mDataTextureSource->Update(surf->GetData());

        newTexSource = mDataTextureSource;
        break;
      }
      case gfx::SharedSurfaceType::GLTextureShare: {
        gl::SharedSurface_GLTexture* surf = gl::SharedSurface_GLTexture::Cast(abstractSurf);

        MOZ_ASSERT(mCompositor->GetBackendType() == LayersBackend::LAYERS_OPENGL);
        CompositorOGL* compositorOGL = static_cast<CompositorOGL*>(mCompositor);
        gl::GLContext* gl = compositorOGL->gl();

        GLenum target = surf->ConsTextureTarget();
        GLuint tex = surf->ConsTexture(gl);
        newTexSource = new GLTextureSource(compositorOGL,
                                           tex,
                                           format,
                                           target,
                                           surf->Size());
        break;
      }
#ifdef MOZ_ENABLE_D3D10_LAYER
      case gfx::SharedSurfaceType::EGLSurfaceANGLE: {
        gl::SharedSurface_ANGLEShareHandle* surf = gl::SharedSurface_ANGLEShareHandle::Cast(abstractSurf);
        HANDLE shareHandle = surf->GetShareHandle();

        MOZ_ASSERT(mCompositor->GetBackendType() == LayersBackend::LAYERS_D3D11);
        CompositorD3D11* compositorD3D11 = static_cast<CompositorD3D11*>(mCompositor);
        ID3D11Device* d3d = compositorD3D11->GetDevice();

        nsRefPtr<ID3D11Texture2D> tex;
        HRESULT hr = d3d->OpenSharedResource(shareHandle,
                                             __uuidof(ID3D11Texture2D),
                                             getter_AddRefs(tex));
        if (FAILED(hr)) {
          NS_WARNING("Failed to open shared resource.");
          break;
        }
//.........这里部分代码省略.........

void
LayerManagerComposite::RenderToPresentationSurface()
{
  if (!AndroidBridge::Bridge()) {
    return;
  }

  void* window = AndroidBridge::Bridge()->GetPresentationWindow();

  if (!window) {
    return;
  }

  EGLSurface surface = AndroidBridge::Bridge()->GetPresentationSurface();

  if (!surface) {
    //create surface;
    surface = GLContextProviderEGL::CreateEGLSurface(window);
    if (!surface) {
      return;
    }

    AndroidBridge::Bridge()->SetPresentationSurface(surface);
  }

  CompositorOGL* compositor = static_cast<CompositorOGL*>(mCompositor.get());
  GLContext* gl = compositor->gl();
  GLContextEGL* egl = GLContextEGL::Cast(gl);

  if (!egl) {
    return;
  }

  const IntSize windowSize = AndroidBridge::Bridge()->GetNativeWindowSize(window);

  if ((windowSize.width <= 0) || (windowSize.height <= 0)) {
    return;
  }

  const int actualWidth = windowSize.width;
  const int actualHeight = windowSize.height;

  const gfx::IntSize originalSize = compositor->GetDestinationSurfaceSize();

  const int pageWidth = originalSize.width;
  const int pageHeight = originalSize.height;

  float scale = 1.0;

  if ((pageWidth > actualWidth) || (pageHeight > actualHeight)) {
    const float scaleWidth = (float)actualWidth / (float)pageWidth;
    const float scaleHeight = (float)actualHeight / (float)pageHeight;
    scale = scaleWidth <= scaleHeight ? scaleWidth : scaleHeight;
  }

  const gfx::IntSize actualSize(actualWidth, actualHeight);
  ScopedCompostitorSurfaceSize overrideSurfaceSize(compositor, actualSize);

  const ScreenPoint offset((actualWidth - (int)(scale * pageWidth)) / 2, 0);
  ScopedCompositorRenderOffset overrideRenderOffset(compositor, offset);
  ScopedContextSurfaceOverride overrideSurface(egl, surface);

  nsIntRegion invalid;
  Rect bounds(0.0f, 0.0f, scale * pageWidth, (float)actualHeight);
  Rect rect, actualBounds;

  mCompositor->BeginFrame(invalid, nullptr, bounds, &rect, &actualBounds);

  // Override the projection matrix since the presentation frame buffer
  // is probably not the same size as the device frame buffer. The override
  // projection matrix also scales the content to fit into the presentation
  // frame buffer.
  Matrix viewMatrix;
  viewMatrix.PreTranslate(-1.0, 1.0);
  viewMatrix.PreScale((2.0f * scale) / (float)actualWidth, (2.0f * scale) / (float)actualHeight);
  viewMatrix.PreScale(1.0f, -1.0f);
  viewMatrix.PreTranslate((int)((float)offset.x / scale), offset.y);

  Matrix4x4 projMatrix = Matrix4x4::From2D(viewMatrix);

  ScopedCompositorProjMatrix overrideProjMatrix(compositor, projMatrix);

  // The Java side of Fennec sets a scissor rect that accounts for
  // chrome such as the URL bar. Override that so that the entire frame buffer
  // is cleared.
  ScopedScissorRect screen(egl, 0, 0, actualWidth, actualHeight);
  egl->fClearColor(0.0, 0.0, 0.0, 0.0);
  egl->fClear(LOCAL_GL_COLOR_BUFFER_BIT);

  const IntRect clipRect = IntRect(0, 0, (int)(scale * pageWidth), actualHeight);
  RootLayer()->Prepare(RenderTargetPixel::FromUntyped(clipRect));
  RootLayer()->RenderLayer(clipRect);

  mCompositor->EndFrame();
  mCompositor->SetDispAcquireFence(mRoot);
}

void
LayerManagerComposite::RenderToPresentationSurface()
{
#ifdef MOZ_WIDGET_ANDROID
  nsIWidget* const widget = mCompositor->GetWidget()->RealWidget();
  auto window = static_cast<ANativeWindow*>(
      widget->GetNativeData(NS_PRESENTATION_WINDOW));

  if (!window) {
    return;
  }

  EGLSurface surface = widget->GetNativeData(NS_PRESENTATION_SURFACE);

  if (!surface) {
    //create surface;
    surface = GLContextProviderEGL::CreateEGLSurface(window);
    if (!surface) {
      return;
    }

    widget->SetNativeData(NS_PRESENTATION_SURFACE,
                          reinterpret_cast<uintptr_t>(surface));
  }

  CompositorOGL* compositor = mCompositor->AsCompositorOGL();
  GLContext* gl = compositor->gl();
  GLContextEGL* egl = GLContextEGL::Cast(gl);

  if (!egl) {
    return;
  }

  const IntSize windowSize(ANativeWindow_getWidth(window),
                           ANativeWindow_getHeight(window));

#endif

  if ((windowSize.width <= 0) || (windowSize.height <= 0)) {
    return;
  }

  ScreenRotation rotation = compositor->GetScreenRotation();

  const int actualWidth = windowSize.width;
  const int actualHeight = windowSize.height;

  const gfx::IntSize originalSize = compositor->GetDestinationSurfaceSize();
  const nsIntRect originalRect = nsIntRect(0, 0, originalSize.width, originalSize.height);

  int pageWidth = originalSize.width;
  int pageHeight = originalSize.height;
  if (rotation == ROTATION_90 || rotation == ROTATION_270) {
    pageWidth = originalSize.height;
    pageHeight = originalSize.width;
  }

  float scale = 1.0;

  if ((pageWidth > actualWidth) || (pageHeight > actualHeight)) {
    const float scaleWidth = (float)actualWidth / (float)pageWidth;
    const float scaleHeight = (float)actualHeight / (float)pageHeight;
    scale = scaleWidth <= scaleHeight ? scaleWidth : scaleHeight;
  }

  const gfx::IntSize actualSize(actualWidth, actualHeight);
  ScopedCompostitorSurfaceSize overrideSurfaceSize(compositor, actualSize);

  const ScreenPoint offset((actualWidth - (int)(scale * pageWidth)) / 2, 0);
  ScopedContextSurfaceOverride overrideSurface(egl, surface);

  Matrix viewMatrix = ComputeTransformForRotation(originalRect,
                                                  rotation);
  viewMatrix.Invert(); // unrotate
  viewMatrix.PostScale(scale, scale);
  viewMatrix.PostTranslate(offset.x, offset.y);
  Matrix4x4 matrix = Matrix4x4::From2D(viewMatrix);

  mRoot->ComputeEffectiveTransforms(matrix);
  nsIntRegion opaque;
  LayerIntRegion visible;
  PostProcessLayers(mRoot, opaque, visible, Nothing());

  nsIntRegion invalid;
  IntRect bounds = IntRect::Truncate(0, 0, scale * pageWidth, actualHeight);
  IntRect rect, actualBounds;
  MOZ_ASSERT(mRoot->GetOpacity() == 1);
  mCompositor->BeginFrame(invalid, nullptr, bounds, nsIntRegion(), &rect, &actualBounds);

  // The Java side of Fennec sets a scissor rect that accounts for
  // chrome such as the URL bar. Override that so that the entire frame buffer
  // is cleared.
  ScopedScissorRect scissorRect(egl, 0, 0, actualWidth, actualHeight);
  egl->fClearColor(0.0, 0.0, 0.0, 0.0);
  egl->fClear(LOCAL_GL_COLOR_BUFFER_BIT);

  const IntRect clipRect = IntRect::Truncate(0, 0, actualWidth, actualHeight);

  RootLayer()->Prepare(RenderTargetIntRect::FromUnknownRect(clipRect));
  RootLayer()->RenderLayer(clipRect);
//.........这里部分代码省略.........

void
LayerManagerComposite::RenderToPresentationSurface()
{
#ifdef MOZ_WIDGET_ANDROID
  if (!AndroidBridge::Bridge()) {
    return;
  }

  void* window = AndroidBridge::Bridge()->GetPresentationWindow();

  if (!window) {
    return;
  }

  EGLSurface surface = AndroidBridge::Bridge()->GetPresentationSurface();

  if (!surface) {
    //create surface;
    surface = GLContextProviderEGL::CreateEGLSurface(window);
    if (!surface) {
      return;
    }

    AndroidBridge::Bridge()->SetPresentationSurface(surface);
  }

  CompositorOGL* compositor = static_cast<CompositorOGL*>(mCompositor.get());
  GLContext* gl = compositor->gl();
  GLContextEGL* egl = GLContextEGL::Cast(gl);

  if (!egl) {
    return;
  }

  const IntSize windowSize = AndroidBridge::Bridge()->GetNativeWindowSize(window);

#elif defined(MOZ_WIDGET_GONK)
  CompositorOGL* compositor = static_cast<CompositorOGL*>(mCompositor.get());
  nsScreenGonk* screen = static_cast<nsWindow*>(mCompositor->GetWidget())->GetScreen();
  if (!screen->IsPrimaryScreen()) {
    // Only primary screen support mirroring
    return;
  }

  nsWindow* mirrorScreenWidget = screen->GetMirroringWidget();
  if (!mirrorScreenWidget) {
    // No mirroring
    return;
  }

  nsScreenGonk* mirrorScreen = mirrorScreenWidget->GetScreen();
  if (!mirrorScreen->GetTopWindows().IsEmpty()) {
    return;
  }

  EGLSurface surface = mirrorScreen->GetEGLSurface();
  if (surface == LOCAL_EGL_NO_SURFACE) {
    // Create GLContext
    nsRefPtr<GLContext> gl = gl::GLContextProvider::CreateForWindow(mirrorScreenWidget);
    mirrorScreenWidget->SetNativeData(NS_NATIVE_OPENGL_CONTEXT,
                                      reinterpret_cast<uintptr_t>(gl.get()));
    surface = mirrorScreen->GetEGLSurface();
    if (surface == LOCAL_EGL_NO_SURFACE) {
      // Failed to create EGLSurface
      return;
    }
  }
  GLContext* gl = compositor->gl();
  GLContextEGL* egl = GLContextEGL::Cast(gl);
  const IntSize windowSize = mirrorScreen->GetNaturalBounds().Size();
#endif

  if ((windowSize.width <= 0) || (windowSize.height <= 0)) {
    return;
  }

  ScreenRotation rotation = compositor->GetScreenRotation();

  const int actualWidth = windowSize.width;
  const int actualHeight = windowSize.height;

  const gfx::IntSize originalSize = compositor->GetDestinationSurfaceSize();
  const nsIntRect originalRect = nsIntRect(0, 0, originalSize.width, originalSize.height);

  int pageWidth = originalSize.width;
  int pageHeight = originalSize.height;
  if (rotation == ROTATION_90 || rotation == ROTATION_270) {
    pageWidth = originalSize.height;
    pageHeight = originalSize.width;
  }

  float scale = 1.0;

  if ((pageWidth > actualWidth) || (pageHeight > actualHeight)) {
    const float scaleWidth = (float)actualWidth / (float)pageWidth;
    const float scaleHeight = (float)actualHeight / (float)pageHeight;
    scale = scaleWidth <= scaleHeight ? scaleWidth : scaleHeight;
  }

  const gfx::IntSize actualSize(actualWidth, actualHeight);
//.........这里部分代码省略.........

static RefPtr<TextureSource>
SharedSurfaceToTexSource(gl::SharedSurface* abstractSurf, Compositor* compositor)
{
  MOZ_ASSERT(abstractSurf);
  MOZ_ASSERT(abstractSurf->mType != gl::SharedSurfaceType::Basic);
  MOZ_ASSERT(abstractSurf->mType != gl::SharedSurfaceType::Gralloc);

  if (!compositor) {
    return nullptr;
  }

  gfx::SurfaceFormat format = abstractSurf->mHasAlpha ? gfx::SurfaceFormat::R8G8B8A8
                                                      : gfx::SurfaceFormat::R8G8B8X8;

  RefPtr<TextureSource> texSource;
  switch (abstractSurf->mType) {
#ifdef XP_WIN
    case gl::SharedSurfaceType::EGLSurfaceANGLE: {
      auto surf = gl::SharedSurface_ANGLEShareHandle::Cast(abstractSurf);

      MOZ_ASSERT(compositor->GetBackendType() == LayersBackend::LAYERS_D3D11);
      CompositorD3D11* compositorD3D11 = static_cast<CompositorD3D11*>(compositor);
      RefPtr<ID3D11Texture2D> tex = surf->GetConsumerTexture();

      if (!tex) {
        NS_WARNING("Failed to open shared resource.");
        break;
      }
      texSource = new DataTextureSourceD3D11(format, compositorD3D11, tex);
      break;
    }
#endif
    case gl::SharedSurfaceType::GLTextureShare: {
      auto surf = gl::SharedSurface_GLTexture::Cast(abstractSurf);

      MOZ_ASSERT(compositor->GetBackendType() == LayersBackend::LAYERS_OPENGL);
      CompositorOGL* compositorOGL = static_cast<CompositorOGL*>(compositor);
      gl::GLContext* gl = compositorOGL->gl();

      GLenum target = surf->ConsTextureTarget();
      GLuint tex = surf->ConsTexture(gl);
      texSource = new GLTextureSource(compositorOGL, tex, target,
                                      surf->mSize, format,
                                      true/*externally owned*/);
      break;
    }
    case gl::SharedSurfaceType::EGLImageShare: {
      auto surf = gl::SharedSurface_EGLImage::Cast(abstractSurf);

      MOZ_ASSERT(compositor->GetBackendType() == LayersBackend::LAYERS_OPENGL);
      CompositorOGL* compositorOGL = static_cast<CompositorOGL*>(compositor);
      gl::GLContext* gl = compositorOGL->gl();
      MOZ_ASSERT(gl->IsCurrent());

      GLenum target = 0;
      GLuint tex = 0;
      surf->AcquireConsumerTexture(gl, &tex, &target);

      texSource = new GLTextureSource(compositorOGL, tex, target,
                                      surf->mSize, format,
                                      true/*externally owned*/);
      break;
    }
#ifdef XP_MACOSX
    case gl::SharedSurfaceType::IOSurface: {
      auto surf = gl::SharedSurface_IOSurface::Cast(abstractSurf);
      MacIOSurface* ioSurf = surf->GetIOSurface();

      MOZ_ASSERT(compositor->GetBackendType() == LayersBackend::LAYERS_OPENGL);
      CompositorOGL* compositorOGL = static_cast<CompositorOGL*>(compositor);

      texSource = new MacIOSurfaceTextureSourceOGL(compositorOGL, ioSurf);
      break;
    }
#endif
    default:
      break;
  }

  MOZ_ASSERT(texSource.get(), "TextureSource creation failed.");
  return texSource;
}