Mac CoreAnimation compositor in the browser process

content/browser/compositor/gpu_output_surface_mac.mm

 // Copyright 2016 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "content/browser/compositor/gpu_output_surface_mac.h"
 
+#include "base/trace_event/trace_event.h"
+#include "cc/output/ca_layer_overlay.h"
 #include "components/display_compositor/compositor_overlay_candidate_validator.h"
 #include "content/browser/gpu/gpu_surface_tracker.h"
 #include "content/common/gpu/client/context_provider_command_buffer.h"
 #include "gpu/GLES2/gl2extchromium.h"
 #include "gpu/ipc/client/gpu_process_hosted_ca_layer_tree_params.h"
 #include "ui/accelerated_widget_mac/accelerated_widget_mac.h"
+#include "ui/accelerated_widget_mac/ca_layer_tree_coordinator.h"
+#include "ui/accelerated_widget_mac/ca_renderer_layer_tree.h"
 #include "ui/base/cocoa/remote_layer_api.h"
+#include "ui/gfx/geometry/rect_conversions.h"
 #include "ui/gfx/mac/io_surface.h"
 
 namespace content {
 
 struct GpuOutputSurfaceMac::RemoteLayers {
   void UpdateLayers(CAContextID content_ca_context_id,
                     CAContextID fullscreen_low_power_ca_context_id) {
     if (content_ca_context_id) {
       if ([content_layer contextId] != content_ca_context_id) {
         content_layer.reset([[CALayerHost alloc] init]);
@@ skipping 31 matching lines @@
     gpu::GpuMemoryBufferManager* gpu_memory_buffer_manager)
     : GpuSurfacelessBrowserCompositorOutputSurface(
           std::move(context),
           surface_handle,
           std::move(vsync_manager),
           task_runner,
           std::move(overlay_candidate_validator),
           GL_TEXTURE_RECTANGLE_ARB,
           GL_RGBA,
           gpu_memory_buffer_manager),
-      remote_layers_(new RemoteLayers) {}
+      remote_layers_(new RemoteLayers),
+      ca_layer_tree_coordinator_(new ui::CALayerTreeCoordinator(true)) {}
 
 GpuOutputSurfaceMac::~GpuOutputSurfaceMac() {}
 
+void GpuOutputSurfaceMac::Reshape(const gfx::Size& size, float scale_factor, bool alpha) {
+  GpuSurfacelessBrowserCompositorOutputSurface::Reshape(size, scale_factor, alpha);
+
+  ca_layer_tree_coordinator_->Resize(size, scale_factor);
+}
+
 void GpuOutputSurfaceMac::SwapBuffers(cc::CompositorFrame* frame) {
   GpuSurfacelessBrowserCompositorOutputSurface::SwapBuffers(frame);
 
   if (should_show_frames_state_ ==
       SHOULD_NOT_SHOW_FRAMES_NO_SWAP_AFTER_SUSPENDED) {
     should_show_frames_state_ = SHOULD_SHOW_FRAMES;
   }
 }
 
 void GpuOutputSurfaceMac::OnGpuSwapBuffersCompleted(
     const std::vector<ui::LatencyInfo>& latency_info,
     gfx::SwapResult result,
     const gpu::GpuProcessHostedCALayerTreeParamsMac* params_mac) {
   remote_layers_->UpdateLayers(params_mac->ca_context_id,
                                params_mac->fullscreen_low_power_ca_context_id);
   if (should_show_frames_state_ == SHOULD_SHOW_FRAMES) {
     ui::AcceleratedWidgetMac* widget = ui::AcceleratedWidgetMac::Get(
         content::GpuSurfaceTracker::Get()->AcquireNativeWidget(
             params_mac->surface_handle));
     if (widget) {
-      if (remote_layers_->content_layer) {
+      if (1) {
+        widget->GotCALayerFrame(
+            base::scoped_nsobject<CALayer>(
+                ca_layer_tree_coordinator_->GetCALayerForDisplay(),
+                base::scoped_policy::RETAIN),
+            false,
+            base::scoped_nsobject<CALayer>(
+                ca_layer_tree_coordinator_->
+                    GetFullscreenLowPowerLayerForDisplay(),
+                base::scoped_policy::RETAIN),
+            params_mac->pixel_size, params_mac->scale_factor);
+      } else if (remote_layers_->content_layer) {
         widget->GotCALayerFrame(
             base::scoped_nsobject<CALayer>(remote_layers_->content_layer.get(),
                                            base::scoped_policy::RETAIN),
             params_mac->fullscreen_low_power_ca_context_valid,
             base::scoped_nsobject<CALayer>(
                 remote_layers_->fullscreen_low_power_layer.get(),
                 base::scoped_policy::RETAIN),
             params_mac->pixel_size, params_mac->scale_factor);
       } else {
         widget->GotIOSurfaceFrame(params_mac->io_surface,
@@ skipping 27 matching lines @@
       should_show_frames_state_ =
           SHOULD_NOT_SHOW_FRAMES_NO_SWAP_AFTER_SUSPENDED;
     }
   }
 }
 
 bool GpuOutputSurfaceMac::SurfaceIsSuspendForRecycle() const {
   return should_show_frames_state_ == SHOULD_NOT_SHOW_FRAMES_SUSPENDED;
 }
 
+void GpuOutputSurfaceMac::ProcessCALayers(const cc::CALayerOverlayList& ca_layer_overlays) {
+  {
+    TRACE_EVENT0("browser", "GpuOutputSurfaceMac::ProcessCALayers Construct");
+    for (const auto& ca_layer_overlay : ca_layer_overlays) {
+      base::ScopedCFTypeRef<IOSurfaceRef> io_surface;
+      base::ScopedCFTypeRef<CVPixelBufferRef> cv_pixel_buffer;
+      if (ca_layer_overlay.resource_lock) {
+        gfx::GpuMemoryBuffer* gpu_memory_buffer =
+            ca_layer_overlay.resource_lock->GetGpuMemoryBuffer();
+        if (gpu_memory_buffer) {
+          io_surface.reset(static_cast<IOSurfaceRef>(gpu_memory_buffer->GetIOSurface()),
+                           base::scoped_policy::RETAIN);
+        }
+      }
+      ca_layer_tree_coordinator_->GetPendingCARendererLayerTree()->
+          ScheduleCALayer(ca_layer_overlay.is_clipped,
+                          gfx::ToNearestRect(ca_layer_overlay.clip_rect),
+                          ca_layer_overlay.sorting_context_id,
+                          gfx::Transform(ca_layer_overlay.transform),
+                          io_surface,
+                          cv_pixel_buffer,
+                          ca_layer_overlay.contents_rect,
+                          gfx::ToNearestRect(ca_layer_overlay.bounds_rect),
+                          ca_layer_overlay.background_color,
+                          ca_layer_overlay.edge_aa_mask,
+                          ca_layer_overlay.opacity,
+                          ca_layer_overlay.filter);
+    }
+  }
+
+  TRACE_EVENT0("browser", "GpuOutputSurfaceMac::ProcessCALayers Commit");
+  bool fullscreen_low_power_layer_valid = false;
+  ca_layer_tree_coordinator_->CommitPendingTreesToCA(
+      gfx::Rect(SurfaceSize()), &fullscreen_low_power_layer_valid);
+}
+
 }  // namespace content