Allow deleted resources to be used

gpu/command_buffer/service/framebuffer_manager.cc

 // Copyright (c) 2011 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 "gpu/command_buffer/common/gles2_cmd_utils.h"
 
 namespace gpu {
 namespace gles2 {
@@ skipping 31 matching lines @@
   virtual void SetCleared(
       RenderbufferManager* renderbuffer_manager,
       TextureManager* /* texture_manager */) {
     renderbuffer_manager->SetCleared(renderbuffer_);
   }
 
   virtual bool IsTexture(TextureManager::TextureInfo* /* texture */) const {
     return false;
   }
 
+  virtual bool IsRenderbuffer(
+       RenderbufferManager::RenderbufferInfo* renderbuffer) const {
+     return renderbuffer_ == renderbuffer;
+  }
+
   virtual bool CanRenderTo() const {
     return true;
   }
 
   virtual void DetachFromFramebuffer() {
     // Nothing to do for renderbuffers.
   }
 
   virtual bool ValidForAttachmentType(GLenum attachment_type) {
     // TODO(gman): Fill this out.
@@ skipping 54 matching lines @@
   virtual void SetCleared(
       RenderbufferManager* /* renderbuffer_manager */,
       TextureManager* texture_manager) {
     texture_manager->SetLevelCleared(texture_, target_, level_);
   }
 
   virtual bool IsTexture(TextureManager::TextureInfo* texture) const {
     return texture == texture_.get();
   }
 
+  virtual bool IsRenderbuffer(
+       RenderbufferManager::RenderbufferInfo* /* renderbuffer */) const {
+    return false;
+  }
+
   TextureManager::TextureInfo* texture() const {
     return texture_.get();
   }
 
   virtual bool CanRenderTo() const {
     return texture_->CanRenderTo();
   }
 
   virtual void DetachFromFramebuffer() {
     texture_->DetachFromFramebuffer();
@@ skipping 141 matching lines @@
   for (AttachmentMap::const_iterator it = attachments_.begin();
        it != attachments_.end(); ++it) {
     Attachment* attachment = it->second;
     if (!attachment->cleared()) {
       return false;
     }
   }
   return true;
 }
 
+void FramebufferManager::FramebufferInfo::UnbindRenderbuffer(
+    GLenum target, RenderbufferManager::RenderbufferInfo* renderbuffer) {
+  bool done;
+  do {
+    done = true;
+    for (AttachmentMap::const_iterator it = attachments_.begin();
+         it != attachments_.end(); ++it) {
+      Attachment* attachment = it->second;
+      if (attachment->IsRenderbuffer(renderbuffer)) {
+        // TODO(gman): manually detach renderbuffer.
+        // glFramebufferRenderbufferEXT(target, it->first, GL_RENDERBUFFER, 0);
+        AttachRenderbuffer(it->first, NULL);
+        done = false;
+        break;
+      }
+    }
+  } while (!done);
+}
+
+void FramebufferManager::FramebufferInfo::UnbindTexture(
+    GLenum target, TextureManager::TextureInfo* texture) {
+  bool done;
+  do {
+    done = true;
+    for (AttachmentMap::const_iterator it = attachments_.begin();
+         it != attachments_.end(); ++it) {
+      Attachment* attachment = it->second;
+      if (attachment->IsTexture(texture)) {
+        // 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);
+}
+
 FramebufferManager::FramebufferInfo* FramebufferManager::GetFramebufferInfo(
     GLuint client_id) {
   FramebufferInfoMap::iterator it = framebuffer_infos_.find(client_id);
   return it != framebuffer_infos_.end() ? it->second : NULL;
 }
 
 void FramebufferManager::RemoveFramebufferInfo(GLuint client_id) {
   FramebufferInfoMap::iterator it = framebuffer_infos_.find(client_id);
   if (it != framebuffer_infos_.end()) {
     it->second->MarkAsDeleted();
@@ skipping 55 matching lines @@
       return true;
     }
   }
   return false;
 }
 
 }  // namespace gles2
 }  // namespace gpu