[PPAPI] Compositor API implementation

content/renderer/pepper/pepper_plugin_instance_impl.cc

Index: content/renderer/pepper/pepper_plugin_instance_impl.cc
diff --git a/content/renderer/pepper/pepper_plugin_instance_impl.cc b/content/renderer/pepper/pepper_plugin_instance_impl.cc
index 0811eba1f5d5c7cb0426baa15a1a18be97af67d4..f43107b0a25a36f78c05b551c5f857baf9075c3a 100644
--- a/content/renderer/pepper/pepper_plugin_instance_impl.cc
+++ b/content/renderer/pepper/pepper_plugin_instance_impl.cc
@@ -35,6 +35,7 @@
 #include "content/renderer/pepper/message_channel.h"
 #include "content/renderer/pepper/npapi_glue.h"
 #include "content/renderer/pepper/pepper_browser_connection.h"
+#include "content/renderer/pepper/pepper_compositor_host.h"
 #include "content/renderer/pepper/pepper_file_ref_renderer_host.h"
 #include "content/renderer/pepper/pepper_graphics_2d_host.h"
 #include "content/renderer/pepper/pepper_in_process_router.h"
@@ -524,6 +525,7 @@ PepperPluginInstanceImpl::PepperPluginInstanceImpl(
       full_frame_(false),
       sent_initial_did_change_view_(false),
       bound_graphics_2d_platform_(NULL),
+      bound_compositor_(NULL),
       has_webkit_focus_(false),
       has_content_area_focus_(false),
       find_identifier_(-1),
@@ -731,11 +733,14 @@ void PepperPluginInstanceImpl::InvalidateRect(const gfx::Rect& rect) {
     else
       container_->invalidateRect(rect);
   }
-  if (texture_layer_) {
+
+  cc::Layer* layer =
+      texture_layer_ ? texture_layer_.get() : compositor_layer_.get();
+  if (layer) {
     if (rect.IsEmpty()) {
-      texture_layer_->SetNeedsDisplay();
+      layer->SetNeedsDisplay();
     } else {
-      texture_layer_->SetNeedsDisplayRect(rect);
+      layer->SetNeedsDisplayRect(rect);
     }
   }
 }
@@ -743,7 +748,9 @@ void PepperPluginInstanceImpl::InvalidateRect(const gfx::Rect& rect) {
 void PepperPluginInstanceImpl::ScrollRect(int dx,
                                           int dy,
                                           const gfx::Rect& rect) {
-  if (texture_layer_) {
+  cc::Layer* layer =
+      texture_layer_ ? texture_layer_.get() : compositor_layer_.get();
+  if (layer) {
     InvalidateRect(rect);
   } else if (fullscreen_container_) {
     fullscreen_container_->ScrollRect(dx, dy, rect);
@@ -1277,6 +1284,8 @@ void PepperPluginInstanceImpl::ViewInitiatedPaint() {
     bound_graphics_2d_platform_->ViewInitiatedPaint();
   else if (bound_graphics_3d_.get())
     bound_graphics_3d_->ViewInitiatedPaint();
+  else if (bound_compositor_)
+    bound_compositor_->ViewInitiatedPaint();
 }
 
 void PepperPluginInstanceImpl::ViewFlushedPaint() {
@@ -1286,6 +1295,8 @@ void PepperPluginInstanceImpl::ViewFlushedPaint() {
     bound_graphics_2d_platform_->ViewFlushedPaint();
   else if (bound_graphics_3d_.get())
     bound_graphics_3d_->ViewFlushedPaint();
+  else if (bound_compositor_)
+    bound_compositor_->ViewFlushedPaint();
 }
 
 void PepperPluginInstanceImpl::SetSelectedText(
@@ -1986,24 +1997,28 @@ void PepperPluginInstanceImpl::UpdateLayer() {
   }
   bool want_3d_layer = !mailbox.IsZero();
   bool want_2d_layer = !!bound_graphics_2d_platform_;
-  bool want_layer = want_3d_layer || want_2d_layer;
+  bool want_texture_layer = want_3d_layer || want_2d_layer;
+  bool want_compositor_layer = !!bound_compositor_;
 
-  if ((want_layer == !!texture_layer_.get()) &&
+  if ((want_texture_layer == !!texture_layer_.get()) &&
       (want_3d_layer == layer_is_hardware_) &&
+      (want_compositor_layer == !!compositor_layer_) &&
       layer_bound_to_fullscreen_ == !!fullscreen_container_) {
     UpdateLayerTransform();
     return;
   }
 
-  if (texture_layer_) {
+  if (texture_layer_ || compositor_layer_) {
     if (!layer_bound_to_fullscreen_)
       container_->setWebLayer(NULL);
     else if (fullscreen_container_)
       fullscreen_container_->SetLayer(NULL);
     web_layer_.reset();
     texture_layer_ = NULL;
+    compositor_layer_ = NULL;
   }
-  if (want_layer) {
+
+  if (want_texture_layer) {
     bool opaque = false;
     if (want_3d_layer) {
       DCHECK(bound_graphics_3d_.get());
@@ -2018,18 +2033,26 @@ void PepperPluginInstanceImpl::UpdateLayer() {
       opaque = bound_graphics_2d_platform_->IsAlwaysOpaque();
       texture_layer_->SetFlipped(false);
     }
+
+    // Ignore transparency in fullscreen, since that's what Flash always
+    // wants to do, and that lets it not recreate a context if
+    // wmode=transparent was specified.
+    opaque = opaque || fullscreen_container_;
+    texture_layer_->SetContentsOpaque(opaque);
     web_layer_.reset(new webkit::WebLayerImpl(texture_layer_));
+  } else if (want_compositor_layer) {
+    compositor_layer_ = bound_compositor_->layer();
+    web_layer_.reset(new webkit::WebLayerImpl(compositor_layer_));
+  }
+
+  if (web_layer_) {
     if (fullscreen_container_) {
       fullscreen_container_->SetLayer(web_layer_.get());
-      // Ignore transparency in fullscreen, since that's what Flash always
-      // wants to do, and that lets it not recreate a context if
-      // wmode=transparent was specified.
-      texture_layer_->SetContentsOpaque(true);
     } else {
       container_->setWebLayer(web_layer_.get());
-      texture_layer_->SetContentsOpaque(opaque);
     }
   }
+
   layer_bound_to_fullscreen_ = !!fullscreen_container_;
   layer_is_hardware_ = want_3d_layer;
   UpdateLayerTransform();
@@ -2211,6 +2234,10 @@ PP_Bool PepperPluginInstanceImpl::BindGraphics(PP_Instance instance,
     bound_graphics_2d_platform_->BindToInstance(NULL);
     bound_graphics_2d_platform_ = NULL;
   }
+  if (bound_compositor_) {
+    bound_compositor_->BindToInstance(NULL);
+    bound_compositor_ = NULL;
+  }
 
   // Special-case clearing the current device.
   if (!device) {
@@ -2229,10 +2256,16 @@ PP_Bool PepperPluginInstanceImpl::BindGraphics(PP_Instance instance,
       RendererPpapiHost::GetForPPInstance(instance)->GetPpapiHost();
   ppapi::host::ResourceHost* host = ppapi_host->GetResourceHost(device);
   PepperGraphics2DHost* graphics_2d = NULL;
+  PepperCompositorHost* compositor = NULL;
   if (host) {
-    if (host->IsGraphics2DHost())
+    if (host->IsGraphics2DHost()) {
       graphics_2d = static_cast<PepperGraphics2DHost*>(host);
-    DLOG_IF(ERROR, !graphics_2d) << "Resource is not PepperGraphics2DHost.";
+    } else if (host->IsCompositorHost()) {
+      compositor = static_cast<PepperCompositorHost*>(host);
+    } else {
+      DLOG(ERROR) <<
+          "Resource is not PepperCompositorHost or PepperGraphics2DHost.";
+    }
   }
 
   EnterResourceNoLock<PPB_Graphics3D_API> enter_3d(device, false);
@@ -2241,7 +2274,13 @@ PP_Bool PepperPluginInstanceImpl::BindGraphics(PP_Instance instance,
           ? static_cast<PPB_Graphics3D_Impl*>(enter_3d.object())
           : NULL;
 
-  if (graphics_2d) {
+  if (compositor) {
+    if (compositor->BindToInstance(this)) {
+      bound_compositor_ = compositor;
+      UpdateLayer();
+      return PP_TRUE;
+    }
+  } else if (graphics_2d) {
     if (graphics_2d->BindToInstance(this)) {
       bound_graphics_2d_platform_ = graphics_2d;
       UpdateLayer();