Make fullscreen pepper flash create a texture layer with software compositor

This switches it away from using the legacy 2D path and gets rid of a couple of copies.

BUG=269214,275200

Review URL: https://chromiumcodereview.appspot.com/23866006

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@222236 0039d316-1c4b-4281-b951-d872f2087c98

content/renderer/pepper/pepper_graphics_2d_host.cc

@@ -8,6 +8,8 @@
 #include "base/debug/trace_event.h"
 #include "base/logging.h"
 #include "base/message_loop/message_loop.h"
+#include "cc/resources/texture_mailbox.h"
+#include "content/public/renderer/render_thread.h"
 #include "content/public/renderer/renderer_ppapi_host.h"
 #include "content/renderer/pepper/common.h"
 #include "content/renderer/pepper/gfx_conversion.h"
@@ -187,8 +189,8 @@ PepperGraphics2DHost::PepperGraphics2DHost(RendererPpapiHost* host,
       is_always_opaque_(false),
       scale_(1.0f),
       weak_ptr_factory_(this),
-      is_running_in_process_(host->IsRunningInProcess()) {
-}
+      is_running_in_process_(host->IsRunningInProcess()),
+      texture_mailbox_modified_(true) {}
 
 PepperGraphics2DHost::~PepperGraphics2DHost() {
   // Unbind from the instance when destroyed if we're still bound.
@@ -312,6 +314,8 @@ bool PepperGraphics2DHost::BindToInstance(
     new_instance->InvalidateRect(gfx::Rect());
   }
 
+  texture_mailbox_modified_ = true;
+
   bound_instance_ = new_instance;
   return true;
 }
@@ -551,6 +555,37 @@ int32_t PepperGraphics2DHost::OnHostMsgReadImageData(
   return ReadImageData(image, &top_left) ? PP_OK : PP_ERROR_FAILED;
 }
 
+void ReleaseCallback(scoped_ptr<base::SharedMemory> memory,
+                     unsigned sync_point,
+                     bool lost_resource) {}
+
+bool PepperGraphics2DHost::PrepareTextureMailbox(cc::TextureMailbox* mailbox) {
+  if (!texture_mailbox_modified_)
+    return false;
+  // TODO(jbauman): Send image_data_ through mailbox to avoid copy.
+  gfx::Size pixel_image_size(image_data_->width(), image_data_->height());
+  int buffer_size = pixel_image_size.GetArea() * 4;
+  scoped_ptr<base::SharedMemory> memory =
+      RenderThread::Get()->HostAllocateSharedMemoryBuffer(buffer_size);
+  if (!memory || !memory->Map(buffer_size))
+    return false;
+  void* src = image_data_->Map();
+  memcpy(memory->memory(), src, buffer_size);
+  image_data_->Unmap();
+
+  base::SharedMemory* mem = memory.get();
+  *mailbox =
+      cc::TextureMailbox(mem,
+                         pixel_image_size,
+                         base::Bind(&ReleaseCallback, base::Passed(&memory)));
+  texture_mailbox_modified_ = false;
+  return true;
+}
+
+void PepperGraphics2DHost::AttachedToNewLayer() {
+  texture_mailbox_modified_ = true;
+}
+
 int32_t PepperGraphics2DHost::Flush(PP_Resource* old_image_data) {
   bool done_replace_contents = false;
   bool no_update_visible = true;
@@ -616,6 +651,7 @@ int32_t PepperGraphics2DHost::Flush(PP_Resource* old_image_data) {
       } else {
         bound_instance_->InvalidateRect(op_rect);
       }
+      texture_mailbox_modified_ = true;
     }
   }
   queued_operations_.clear();

content/renderer/pepper/pepper_graphics_2d_host.h

@@ -16,6 +16,8 @@
 #include "ppapi/host/resource_host.h"
 #include "third_party/WebKit/public/platform/WebCanvas.h"
 
+namespace cc { class TextureMailbox; }
+
 namespace gfx {
 class Point;
 class Rect;
@@ -57,6 +59,9 @@ class CONTENT_EXPORT PepperGraphics2DHost
              const gfx::Rect& plugin_rect,
              const gfx::Rect& paint_rect);
 
+  bool PrepareTextureMailbox(cc::TextureMailbox* mailbox);
+  void AttachedToNewLayer();
+
   // Notifications about the view's progress painting.  See PluginInstance.
   // These messages are used to send Flush callbacks to the plugin.
   void ViewWillInitiatePaint();
@@ -169,6 +174,8 @@ class CONTENT_EXPORT PepperGraphics2DHost
 
   bool is_running_in_process_;
 
+  bool texture_mailbox_modified_;
+
   friend class PepperGraphics2DHostTest;
   DISALLOW_COPY_AND_ASSIGN(PepperGraphics2DHost);
 };

content/renderer/pepper/pepper_plugin_instance_impl.cc

@@ -6,6 +6,7 @@
 
 #include "base/bind.h"
 #include "base/callback_helpers.h"
+#include "base/command_line.h"
 #include "base/debug/trace_event.h"
 #include "base/logging.h"
 #include "base/memory/linked_ptr.h"
@@ -17,6 +18,7 @@
 #include "base/time/time.h"
 #include "cc/layers/texture_layer.h"
 #include "content/common/content_constants_internal.h"
+#include "content/public/common/content_switches.h"
 #include "content/public/common/page_zoom.h"
 #include "content/public/renderer/content_renderer_client.h"
 #include "content/renderer/pepper/common.h"
@@ -526,11 +528,6 @@ PepperPluginInstanceImpl::PepperPluginInstanceImpl(
 PepperPluginInstanceImpl::~PepperPluginInstanceImpl() {
   DCHECK(!fullscreen_container_);
 
-  // Force-unbind any Graphics. In the case of Graphics2D, if the plugin
-  // leaks the graphics 2D, it may actually get cleaned up after our
-  // destruction, so we need its pointers to be up-to-date.
-  BindGraphics(pp_instance(), 0);
-
   // Free all the plugin objects. This will automatically clear the back-
   // pointer from the NPObject so WebKit can't call into the plugin any more.
   //
@@ -594,8 +591,11 @@ void PepperPluginInstanceImpl::Delete() {
     fullscreen_container_->Destroy();
     fullscreen_container_ = NULL;
   }
-  bound_graphics_3d_ = NULL;
-  UpdateLayer();
+
+  // Force-unbind any Graphics. In the case of Graphics2D, if the plugin
+  // leaks the graphics 2D, it may actually get cleaned up after our
+  // destruction, so we need its pointers to be up-to-date.
+  BindGraphics(pp_instance(), 0);
   container_ = NULL;
 }
 
@@ -631,12 +631,21 @@ void PepperPluginInstanceImpl::InvalidateRect(const gfx::Rect& rect) {
     else
       container_->invalidateRect(rect);
   }
+  if (texture_layer_) {
+    if (rect.IsEmpty()) {
+      texture_layer_->SetNeedsDisplay();
+    } else {
+      texture_layer_->SetNeedsDisplayRect(rect);
+    }
+  }
 }
 
 void PepperPluginInstanceImpl::ScrollRect(int dx,
                                           int dy,
                                           const gfx::Rect& rect) {
-  if (fullscreen_container_) {
+  if (texture_layer_) {
+    InvalidateRect(rect);
+  } else if (fullscreen_container_) {
     fullscreen_container_->ScrollRect(dx, dy, rect);
   } else {
     if (full_frame_ && !IsViewAccelerated()) {
@@ -1666,8 +1675,6 @@ void PepperPluginInstanceImpl::UpdateFlashFullscreenState(
     return;
   }
 
-  PPB_Graphics3D_Impl* graphics_3d  = bound_graphics_3d_.get();
-  if (graphics_3d)
   UpdateLayer();
 
   bool old_plugin_focus = PluginHasFocus();
@@ -1808,13 +1815,18 @@ void PepperPluginInstanceImpl::UpdateLayer() {
     PlatformContext3D* context = bound_graphics_3d_->platform_context();
     context->GetBackingMailbox(&mailbox);
   }
-  bool want_layer = !mailbox.IsZero();
+  bool want_3d_layer = !mailbox.IsZero();
+  bool want_2d_layer = bound_graphics_2d_platform_ &&
+                       CommandLine::ForCurrentProcess()->HasSwitch(
+                           switches::kEnableSoftwareCompositing);
+  bool want_layer = want_3d_layer || want_2d_layer;
 
-  if (want_layer == !!texture_layer_.get() &&
+  if ((want_layer == !!texture_layer_.get()) &&
+      (want_3d_layer == layer_is_hardware_) &&
       layer_bound_to_fullscreen_ == !!fullscreen_container_)
     return;
 
-  if (texture_layer_.get()) {
+  if (texture_layer_) {
     if (!layer_bound_to_fullscreen_)
       container_->setWebLayer(NULL);
     else if (fullscreen_container_)
@@ -1823,8 +1835,20 @@ void PepperPluginInstanceImpl::UpdateLayer() {
     texture_layer_ = NULL;
   }
   if (want_layer) {
+    bool opaque = false;
+    if (want_3d_layer) {
       DCHECK(bound_graphics_3d_.get());
       texture_layer_ = cc::TextureLayer::CreateForMailbox(NULL);
+      opaque = bound_graphics_3d_->IsOpaque();
+      texture_layer_->SetTextureMailbox(
+          cc::TextureMailbox(mailbox, base::Bind(&IgnoreCallback), 0));
+    } else {
+      DCHECK(bound_graphics_2d_platform_);
+      texture_layer_ = cc::TextureLayer::CreateForMailbox(this);
+      bound_graphics_2d_platform_->AttachedToNewLayer();
+      opaque = bound_graphics_2d_platform_->IsAlwaysOpaque();
+      texture_layer_->SetFlipped(false);
+    }
     web_layer_.reset(new webkit::WebLayerImpl(texture_layer_));
     if (fullscreen_container_) {
       fullscreen_container_->SetLayer(web_layer_.get());
@@ -1834,12 +1858,27 @@ void PepperPluginInstanceImpl::UpdateLayer() {
       texture_layer_->SetContentsOpaque(true);
     } else {
       container_->setWebLayer(web_layer_.get());
-      texture_layer_->SetContentsOpaque(bound_graphics_3d_->IsOpaque());
+      texture_layer_->SetContentsOpaque(opaque);
     }
-    texture_layer_->SetTextureMailbox(
-        cc::TextureMailbox(mailbox, base::Bind(&IgnoreCallback), 0));
   }
   layer_bound_to_fullscreen_ = !!fullscreen_container_;
+  layer_is_hardware_ = want_3d_layer;
+}
+
+unsigned PepperPluginInstanceImpl::PrepareTexture() {
+  return 0;
+}
+
+WebKit::WebGraphicsContext3D* PepperPluginInstanceImpl::Context3d() {
+  return NULL;
+}
+
+bool PepperPluginInstanceImpl::PrepareTextureMailbox(
+    cc::TextureMailbox* mailbox,
+    bool use_shared_memory) {
+  if (!bound_graphics_2d_platform_)
+    return false;
+  return bound_graphics_2d_platform_->PrepareTextureMailbox(mailbox);
 }
 
 void PepperPluginInstanceImpl::AddPluginObject(PluginObject* plugin_object) {

content/renderer/pepper/pepper_plugin_instance_impl.h

@@ -15,6 +15,7 @@
 #include "base/memory/scoped_ptr.h"
 #include "base/memory/weak_ptr.h"
 #include "base/strings/string16.h"
+#include "cc/layers/content_layer_client.h"
 #include "cc/layers/texture_layer_client.h"
 #include "content/common/content_export.h"
 #include "content/public/renderer/pepper_plugin_instance.h"
@@ -114,7 +115,8 @@ class CONTENT_EXPORT PepperPluginInstanceImpl
     : public base::RefCounted<PepperPluginInstanceImpl>,
       public base::SupportsWeakPtr<PepperPluginInstanceImpl>,
       public NON_EXPORTED_BASE(PepperPluginInstance),
-      public ppapi::PPB_Instance_Shared {
+      public ppapi::PPB_Instance_Shared,
+      public NON_EXPORTED_BASE(cc::TextureLayerClient) {
  public:
   // Create and return a PepperPluginInstanceImpl object which supports the most
   // recent version of PPP_Instance possible by querying the given
@@ -499,6 +501,12 @@ class CONTENT_EXPORT PepperPluginInstanceImpl
   // This is not inlined so as to avoid an unnecessary header include of v8.h.
   v8::Isolate* GetIsolate() const;
 
+  // cc::TextureLayerClient implementation.
+  virtual unsigned PrepareTexture() OVERRIDE;
+  virtual WebKit::WebGraphicsContext3D* Context3d() OVERRIDE;
+  virtual bool PrepareTextureMailbox(cc::TextureMailbox* mailbox,
+                                     bool use_shared_memory) OVERRIDE;
+
  private:
   friend class base::RefCounted<PepperPluginInstanceImpl>;
   friend class PpapiUnittest;
@@ -661,6 +669,7 @@ class CONTENT_EXPORT PepperPluginInstanceImpl
   scoped_refptr<cc::TextureLayer> texture_layer_;
   scoped_ptr<WebKit::WebLayer> web_layer_;
   bool layer_bound_to_fullscreen_;
+  bool layer_is_hardware_;
 
   // Plugin URL.
   GURL plugin_url_;