gpu: Refactor to support cross-channel shared textures

gpu/command_buffer/service/framebuffer_manager.cc

 // Copyright (c) 2012 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 "gpu/command_buffer/service/framebuffer_manager.h"
 #include "base/logging.h"
 #include "base/stringprintf.h"
 #include "gpu/command_buffer/common/gles2_cmd_utils.h"
 #include "gpu/command_buffer/service/renderbuffer_manager.h"
 #include "gpu/command_buffer/service/texture_manager.h"
@@ skipping 49 matching lines @@
   }
 
   virtual void SetCleared(
       RenderbufferManager* renderbuffer_manager,
       TextureManager* /* texture_manager */,
       bool cleared) OVERRIDE {
     renderbuffer_manager->SetCleared(renderbuffer_, cleared);
   }
 
   virtual bool IsTexture(
-      Texture* /* texture */) const OVERRIDE {
+      TextureRef* /* texture */) const OVERRIDE {
     return false;
   }
 
   virtual bool IsRenderbuffer(
        Renderbuffer* renderbuffer) const OVERRIDE {
      return renderbuffer_ == renderbuffer;
   }
 
   virtual bool CanRenderTo() const OVERRIDE {
     return true;
@@ skipping 27 matching lines @@
  private:
   scoped_refptr<Renderbuffer> renderbuffer_;
 
   DISALLOW_COPY_AND_ASSIGN(RenderbufferAttachment);
 };
 
 class TextureAttachment
     : public Framebuffer::Attachment {
  public:
   TextureAttachment(
-      Texture* texture, GLenum target, GLint level)
-      : texture_(texture),
+      TextureRef* texture_ref, GLenum target, GLint level)
+      : texture_ref_(texture_ref),
         target_(target),
         level_(level) {
   }
 
   virtual GLsizei width() const OVERRIDE {
     GLsizei temp_width = 0;
     GLsizei temp_height = 0;
-    texture_->GetLevelSize(target_, level_, &temp_width, &temp_height);
+    texture_ref_->texture()->GetLevelSize(
+        target_, level_, &temp_width, &temp_height);
     return temp_width;
   }
 
   virtual GLsizei height() const OVERRIDE {
     GLsizei temp_width = 0;
     GLsizei temp_height = 0;
-    texture_->GetLevelSize(target_, level_, &temp_width, &temp_height);
+    texture_ref_->texture()->GetLevelSize(
+        target_, level_, &temp_width, &temp_height);
     return temp_height;
   }
 
   virtual GLenum internal_format() const OVERRIDE {
     GLenum temp_type = 0;
     GLenum temp_internal_format = 0;
-    texture_->GetLevelType(target_, level_, &temp_type, &temp_internal_format);
+    texture_ref_->texture()->GetLevelType(
+        target_, level_, &temp_type, &temp_internal_format);
     return temp_internal_format;
   }
 
   virtual GLsizei samples() const OVERRIDE {
     return 0;
   }
 
   virtual bool cleared() const OVERRIDE {
-    return texture_->IsLevelCleared(target_, level_);
+    return texture_ref_->texture()->IsLevelCleared(target_, level_);
   }
 
   virtual void SetCleared(
       RenderbufferManager* /* renderbuffer_manager */,
       TextureManager* texture_manager,
       bool cleared) OVERRIDE {
-    texture_manager->SetLevelCleared(texture_, target_, level_, cleared);
+    texture_manager->SetLevelCleared(texture_ref_, target_, level_, cleared);
   }
 
-  virtual bool IsTexture(Texture* texture) const OVERRIDE {
-    return texture == texture_.get();
+  virtual bool IsTexture(TextureRef* texture) const OVERRIDE {
+    return texture == texture_ref_.get();
   }
 
   virtual bool IsRenderbuffer(
        Renderbuffer* /* renderbuffer */)
           const OVERRIDE {
     return false;
   }
 
-  Texture* texture() const {
-    return texture_.get();
+  TextureRef* texture() const {
+    return texture_ref_.get();
   }
 
   virtual bool CanRenderTo() const OVERRIDE {
-    return texture_->CanRenderTo();
+    return texture_ref_->texture()->CanRenderTo();
   }
 
   virtual void DetachFromFramebuffer() const OVERRIDE {
-    texture_->DetachFromFramebuffer();
+    texture_ref_->texture()->DetachFromFramebuffer();
   }
 
   virtual bool ValidForAttachmentType(
       GLenum attachment_type, uint32 max_color_attachments) OVERRIDE {
     GLenum type = 0;
     GLenum internal_format = 0;
-    if (!texture_->GetLevelType(target_, level_, &type, &internal_format)) {
+    if (!texture_ref_->texture()->GetLevelType(
+        target_, level_, &type, &internal_format)) {
       return false;
     }
     uint32 need = GLES2Util::GetChannelsNeededForAttachmentType(
         attachment_type, max_color_attachments);
     uint32 have = GLES2Util::GetChannelsForFormat(internal_format);
     return (need & have) != 0;
   }
 
   virtual void AddToSignature(
       TextureManager* texture_manager, std::string* signature) const OVERRIDE {
     DCHECK(signature);
-    texture_manager->AddToSignature(texture_, target_, level_, signature);
+    texture_manager->AddToSignature(texture_ref_, target_, level_, signature);
   }
 
  protected:
   virtual ~TextureAttachment() {}
 
  private:
-  scoped_refptr<Texture> texture_;
+  scoped_refptr<TextureRef> texture_ref_;
   GLenum target_;
   GLint level_;
 
   DISALLOW_COPY_AND_ASSIGN(TextureAttachment);
 };
 
 FramebufferManager::FramebufferManager(
     uint32 max_draw_buffers, uint32 max_color_attachments)
     : framebuffer_state_change_count_(1),
       framebuffer_count_(0),
@@ skipping 243 matching lines @@
         // glFramebufferRenderbufferEXT(target, it->first, GL_RENDERBUFFER, 0);
         AttachRenderbuffer(it->first, NULL);
         done = false;
         break;
       }
     }
   } while (!done);
 }
 
 void Framebuffer::UnbindTexture(
-    GLenum target, Texture* texture) {
+    GLenum target, TextureRef* texture_ref) {
   bool done;
   do {
     done = true;
     for (AttachmentMap::const_iterator it = attachments_.begin();
          it != attachments_.end(); ++it) {
       Attachment* attachment = it->second;
-      if (attachment->IsTexture(texture)) {
+      if (attachment->IsTexture(texture_ref)) {
         // TODO(gman): manually detach texture.
         // glFramebufferTexture2DEXT(target, it->first, GL_TEXTURE_2D, 0, 0);
         AttachTexture(it->first, NULL, GL_TEXTURE_2D, 0);
         done = false;
         break;
       }
     }
   } while (!done);
 }
 
@@ skipping 19 matching lines @@
   if (renderbuffer) {
     attachments_[attachment] = scoped_refptr<Attachment>(
         new RenderbufferAttachment(renderbuffer));
   } else {
     attachments_.erase(attachment);
   }
   framebuffer_complete_state_count_id_ = 0;
 }
 
 void Framebuffer::AttachTexture(
-    GLenum attachment, Texture* texture, GLenum target,
+    GLenum attachment, TextureRef* texture_ref, GLenum target,
     GLint level) {
   const Attachment* a = GetAttachment(attachment);
   if (a)
     a->DetachFromFramebuffer();
-  if (texture) {
+  if (texture_ref) {
     attachments_[attachment] = scoped_refptr<Attachment>(
-        new TextureAttachment(texture, target, level));
-    texture->AttachToFramebuffer();
+        new TextureAttachment(texture_ref, target, level));
+    texture_ref->texture()->AttachToFramebuffer();
   } else {
     attachments_.erase(attachment);
   }
   framebuffer_complete_state_count_id_ = 0;
 }
 
 const Framebuffer::Attachment*
     Framebuffer::GetAttachment(
         GLenum attachment) const {
   AttachmentMap::const_iterator it = attachments_.find(attachment);
@@ skipping 37 matching lines @@
     Framebuffer* framebuffer) {
   DCHECK(framebuffer);
   return framebuffer->framebuffer_complete_state_count_id() ==
       framebuffer_state_change_count_;
 }
 
 }  // namespace gles2
 }  // namespace gpu