command_buffer: correctly use glGetFramebufferAttachmentParameter

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 <stddef.h>
 #include <stdint.h>
 
 #include "base/logging.h"
@@ skipping 534 matching lines @@
       bool cleared) {
   for (AttachmentMap::iterator it = attachments_.begin();
        it != attachments_.end(); ++it) {
     Attachment* attachment = it->second.get();
     if (attachment->cleared() != cleared) {
       attachment->SetCleared(renderbuffer_manager, texture_manager, cleared);
     }
   }
 }
 
+bool Framebuffer::HasColorAttachment(int index) const {
+  return attachments_.find(GL_COLOR_ATTACHMENT0 + index) != attachments_.end();
+}
+
 bool Framebuffer::HasDepthAttachment() const {
   return attachments_.find(GL_DEPTH_STENCIL_ATTACHMENT) != attachments_.end() ||
          attachments_.find(GL_DEPTH_ATTACHMENT) != attachments_.end();
 }
 
 bool Framebuffer::HasStencilAttachment() const {
   return attachments_.find(GL_DEPTH_STENCIL_ATTACHMENT) != attachments_.end() ||
          attachments_.find(GL_STENCIL_ATTACHMENT) != attachments_.end();
 }
 
@@ skipping 365 matching lines @@
 
 bool FramebufferManager::IsComplete(
     Framebuffer* framebuffer) {
   DCHECK(framebuffer);
   return framebuffer->framebuffer_complete_state_count_id() ==
       framebuffer_state_change_count_;
 }
 
 }  // namespace gles2
 }  // namespace gpu