1 files changed, 47 insertions, 0 deletions
diff --git a/gpu/command_buffer/service/framebuffer_manager.cc b/gpu/command_buffer/service/framebuffer_manager.cc
index 2460a1e..b78a5dc 100644
--- a/gpu/command_buffer/service/framebuffer_manager.cc
+++ b/gpu/command_buffer/service/framebuffer_manager.cc
@@ -87,6 +87,8 @@ class RenderbufferAttachment
     renderbuffer_->AddToSignature(signature);
   }
 
+  void OnWillRenderTo() const override {}
+  void OnDidRenderTo() const override {}
   bool FormsFeedbackLoop(TextureRef* /* texture */,
                          GLint /*level */) const override {
     return false;
@@ -177,6 +179,7 @@ class TextureAttachment
 
   void DetachFromFramebuffer(Framebuffer* framebuffer) const override {
     texture_ref_->texture()->DetachFromFramebuffer();
+    framebuffer->OnTextureRefDetached(texture_ref_.get());
   }
 
   bool ValidForAttachmentType(GLenum attachment_type,
@@ -211,6 +214,14 @@ class TextureAttachment
         texture_ref_.get(), target_, level_, signature);
   }
 
+  void OnWillRenderTo() const override {
+    texture_ref_->texture()->OnWillModifyPixels();
+  }
+
+  void OnDidRenderTo() const override {
+    texture_ref_->texture()->OnDidModifyPixels();
+  }
+
   bool FormsFeedbackLoop(TextureRef* texture, GLint level) const override {
     return texture == texture_ref_.get() && level == level_;
   }
@@ -227,6 +238,10 @@ class TextureAttachment
   DISALLOW_COPY_AND_ASSIGN(TextureAttachment);
 };
 
+FramebufferManager::TextureDetachObserver::TextureDetachObserver() {}
+
+FramebufferManager::TextureDetachObserver::~TextureDetachObserver() {}
+
 FramebufferManager::FramebufferManager(
     uint32 max_draw_buffers,
     uint32 max_color_attachments,
@@ -698,6 +713,28 @@ const Framebuffer::Attachment* Framebuffer::GetReadBufferAttachment() const {
   return GetAttachment(read_buffer_);
 }
 
+void Framebuffer::OnTextureRefDetached(TextureRef* texture) {
+  manager_->OnTextureRefDetached(texture);
+}
+
+void Framebuffer::OnWillRenderTo(GLenum attachment) const {
+  for (AttachmentMap::const_iterator it = attachments_.begin();
+       it != attachments_.end(); ++it) {
+    if (attachment == 0 || attachment == it->first) {
+      it->second->OnWillRenderTo();
+    }
+  }
+}
+
+void Framebuffer::OnDidRenderTo(GLenum attachment) const {
+  for (AttachmentMap::const_iterator it = attachments_.begin();
+       it != attachments_.end(); ++it) {
+    if (attachment == 0 || attachment == it->first) {
+      it->second->OnDidRenderTo();
+    }
+  }
+}
+
 bool FramebufferManager::GetClientId(
     GLuint service_id, GLuint* client_id) const {
   // This doesn't need to be fast. It's only used during slow queries.
@@ -735,5 +772,15 @@ bool FramebufferManager::IsComplete(
       framebuffer_state_change_count_;
 }
 
+void FramebufferManager::OnTextureRefDetached(TextureRef* texture) {
+  for (TextureDetachObserverVector::iterator it =
+           texture_detach_observers_.begin();
+       it != texture_detach_observers_.end();
+       ++it) {
+    TextureDetachObserver* observer = *it;
+    observer->OnTextureRefDetachedFromFramebuffer(texture);
+  }
+}
+
 }  // namespace gles2
 }  // namespace gpu