cc: Make most of cc::OutputSurface abstract.

content/browser/compositor/gpu_browser_compositor_output_surface.cc

 // Copyright 2014 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_browser_compositor_output_surface.h"
 
 #include <utility>
 
 #include "build/build_config.h"
 #include "cc/output/compositor_frame.h"
 #include "cc/output/output_surface_client.h"
 #include "components/display_compositor/compositor_overlay_candidate_validator.h"
 #include "content/browser/compositor/reflector_impl.h"
 #include "content/browser/compositor/reflector_texture.h"
 #include "content/browser/renderer_host/render_widget_host_impl.h"
 #include "content/common/gpu/client/context_provider_command_buffer.h"
 #include "gpu/command_buffer/client/context_support.h"
+#include "gpu/command_buffer/client/gles2_interface.h"
 #include "gpu/ipc/client/command_buffer_proxy_impl.h"
 
 namespace content {
 
 GpuBrowserCompositorOutputSurface::GpuBrowserCompositorOutputSurface(
     scoped_refptr<ContextProviderCommandBuffer> context,
     scoped_refptr<ui::CompositorVSyncManager> vsync_manager,
     cc::SyntheticBeginFrameSource* begin_frame_source,
     std::unique_ptr<display_compositor::CompositorOverlayCandidateValidator>
         overlay_candidate_validator)
@@ skipping 14 matching lines @@
 GpuBrowserCompositorOutputSurface::GetCommandBufferProxy() {
   ContextProviderCommandBuffer* provider_command_buffer =
       static_cast<content::ContextProviderCommandBuffer*>(
           context_provider_.get());
   gpu::CommandBufferProxyImpl* command_buffer_proxy =
       provider_command_buffer->GetCommandBufferProxy();
   DCHECK(command_buffer_proxy);
   return command_buffer_proxy;
 }
 
+void GpuBrowserCompositorOutputSurface::OnReflectorChanged() {
+  if (!reflector_) {
+    reflector_texture_.reset();
+  } else {
+    reflector_texture_.reset(new ReflectorTexture(context_provider()));
+    reflector_->OnSourceTextureMailboxUpdated(reflector_texture_->mailbox());
+  }
+}
+
 bool GpuBrowserCompositorOutputSurface::BindToClient(
     cc::OutputSurfaceClient* client) {
   if (!BrowserCompositorOutputSurface::BindToClient(client))
     return false;
 
   GetCommandBufferProxy()->SetSwapBuffersCompletionCallback(
       swap_buffers_completion_callback_.callback());
   GetCommandBufferProxy()->SetUpdateVSyncParametersCallback(
       update_vsync_parameters_callback_.callback());
   if (capabilities_.uses_default_gl_framebuffer) {
     capabilities_.flipped_output_surface =
         context_provider()->ContextCapabilities().flips_vertically;
   }
   return true;
 }
 
-uint32_t GpuBrowserCompositorOutputSurface::GetFramebufferCopyTextureFormat() {
-  auto* gl = static_cast<ContextProviderCommandBuffer*>(context_provider());
-  return gl->GetCopyTextureInternalFormat();
+void GpuBrowserCompositorOutputSurface::EnsureBackbuffer() {}
+
+void GpuBrowserCompositorOutputSurface::DiscardBackbuffer() {
+  context_provider()->ContextGL()->DiscardBackbufferCHROMIUM();
 }
 
-void GpuBrowserCompositorOutputSurface::OnReflectorChanged() {
-  if (!reflector_) {
-    reflector_texture_.reset();
-  } else {
-    reflector_texture_.reset(new ReflectorTexture(context_provider()));
-    reflector_->OnSourceTextureMailboxUpdated(reflector_texture_->mailbox());
-  }
+void GpuBrowserCompositorOutputSurface::BindFramebuffer() {
+  context_provider()->ContextGL()->BindFramebuffer(GL_FRAMEBUFFER, 0);
 }
 
 void GpuBrowserCompositorOutputSurface::SwapBuffers(cc::CompositorFrame frame) {
   DCHECK(frame.gl_frame_data);
 
   GetCommandBufferProxy()->SetLatencyInfo(frame.metadata.latency_info);
 
   if (reflector_) {
     if (frame.gl_frame_data->sub_buffer_rect ==
         gfx::Rect(frame.gl_frame_data->size)) {
       reflector_texture_->CopyTextureFullImage(SurfaceSize());
       reflector_->OnSourceSwapBuffers();
     } else {
       const gfx::Rect& rect = frame.gl_frame_data->sub_buffer_rect;
       reflector_texture_->CopyTextureSubImage(rect);
       reflector_->OnSourcePostSubBuffer(rect);
     }
   }
 
   if (frame.gl_frame_data->sub_buffer_rect ==
       gfx::Rect(frame.gl_frame_data->size)) {
     context_provider_->ContextSupport()->Swap();
   } else {
     context_provider_->ContextSupport()->PartialSwapBuffers(
         frame.gl_frame_data->sub_buffer_rect);
   }
 }
 
+uint32_t GpuBrowserCompositorOutputSurface::GetFramebufferCopyTextureFormat() {
+  auto* gl = static_cast<ContextProviderCommandBuffer*>(context_provider());
+  return gl->GetCopyTextureInternalFormat();
+}
+
+bool GpuBrowserCompositorOutputSurface::IsDisplayedAsOverlayPlane() const {
+  return false;
+}
+
+unsigned GpuBrowserCompositorOutputSurface::GetOverlayTextureId() const {
+  return 0;
+}
+
+bool GpuBrowserCompositorOutputSurface::SurfaceIsSuspendForRecycle() const {
+  return false;
+}
+
 void GpuBrowserCompositorOutputSurface::OnGpuSwapBuffersCompleted(
     const std::vector<ui::LatencyInfo>& latency_info,
     gfx::SwapResult result,
     const gpu::GpuProcessHostedCALayerTreeParamsMac* params_mac) {
   RenderWidgetHostImpl::CompositorFrameDrawn(latency_info);
-  OnSwapBuffersComplete();
+  client_->DidSwapBuffersComplete();
 }
 
 #if defined(OS_MACOSX)
 void GpuBrowserCompositorOutputSurface::SetSurfaceSuspendedForRecycle(
     bool suspended) {}
 #endif
 
 }  // namespace content