Blend TextureLayer background-color at draw time.

cc/layers/texture_layer.cc

 // Copyright 2010 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 "cc/layers/texture_layer.h"
 
 #include "base/bind.h"
 #include "base/location.h"
 #include "base/message_loop/message_loop_proxy.h"
 #include "cc/layers/texture_layer_client.h"
@@ skipping 13 matching lines @@
 }
 
 TextureLayer::TextureLayer(TextureLayerClient* client, bool uses_mailbox)
     : Layer(),
       client_(client),
       uses_mailbox_(uses_mailbox),
       flipped_(true),
       uv_top_left_(0.f, 0.f),
       uv_bottom_right_(1.f, 1.f),
       premultiplied_alpha_(true),
+      blend_background_color_(false),
       rate_limit_context_(false),
       content_committed_(false),
       texture_id_(0),
       needs_set_mailbox_(false) {
   vertex_opacity_[0] = 1.0f;
   vertex_opacity_[1] = 1.0f;
   vertex_opacity_[2] = 1.0f;
   vertex_opacity_[3] = 1.0f;
 }
 
@@ skipping 54 matching lines @@
   SetNeedsCommit();
 }
 
 void TextureLayer::SetPremultipliedAlpha(bool premultiplied_alpha) {
   if (premultiplied_alpha_ == premultiplied_alpha)
     return;
   premultiplied_alpha_ = premultiplied_alpha;
   SetNeedsCommit();
 }
 
+void TextureLayer::SetBlendBackgroundColor(bool blend) {
+  if (blend_background_color_ == blend)
+    return;
+  blend_background_color_ = blend;
+  SetNeedsCommit();
+}
+
 void TextureLayer::SetRateLimitContext(bool rate_limit) {
   if (!rate_limit && rate_limit_context_ && client_ && layer_tree_host())
     layer_tree_host()->StopRateLimiter(client_->Context3d());
 
   rate_limit_context_ = rate_limit;
 }
 
 void TextureLayer::SetTextureId(unsigned id) {
   DCHECK(!uses_mailbox_);
   if (texture_id_ == id)
@@ skipping 77 matching lines @@
 
 void TextureLayer::PushPropertiesTo(LayerImpl* layer) {
   Layer::PushPropertiesTo(layer);
 
   TextureLayerImpl* texture_layer = static_cast<TextureLayerImpl*>(layer);
   texture_layer->set_flipped(flipped_);
   texture_layer->set_uv_top_left(uv_top_left_);
   texture_layer->set_uv_bottom_right(uv_bottom_right_);
   texture_layer->set_vertex_opacity(vertex_opacity_);
   texture_layer->set_premultiplied_alpha(premultiplied_alpha_);
+  texture_layer->set_blend_background_color(blend_background_color_);
   if (uses_mailbox_ && needs_set_mailbox_) {
     TextureMailbox texture_mailbox;
     if (holder_ref_) {
       MailboxHolder* holder = holder_ref_->holder();
       TextureMailbox::ReleaseCallback callback =
           holder->GetCallbackForImplThread();
       texture_mailbox = holder->mailbox().CopyWithNewCallback(callback);
     }
     texture_layer->SetTextureMailbox(texture_mailbox);
     needs_set_mailbox_ = false;
@@ skipping 76 matching lines @@
 }
 
 void TextureLayer::MailboxHolder::ReturnAndReleaseOnImplThread(
     unsigned sync_point, bool is_lost) {
   message_loop_->PostTask(FROM_HERE, base::Bind(
       &MailboxHolder::ReturnAndReleaseOnMainThread,
       this, sync_point, is_lost));
 }
 
 }  // namespace cc