Improve indexed gl state related GL commands.

gpu/command_buffer/service/feature_info.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/feature_info.h"
 
 #include <stddef.h>
 
 #include <set>
 #include <vector>
@@ skipping 1299 matching lines @@
     GL_COLOR_ATTACHMENT11,
     GL_COLOR_ATTACHMENT12,
     GL_COLOR_ATTACHMENT13,
     GL_COLOR_ATTACHMENT14,
     GL_COLOR_ATTACHMENT15,
   };
   if (max_color_attachments < kTotalColorAttachmentEnums) {
     validators_.attachment.RemoveValues(
         kColorAttachments + max_color_attachments,
         kTotalColorAttachmentEnums - max_color_attachments);
+    validators_.read_buffer.RemoveValues(
+        kColorAttachments + max_color_attachments,
+        kTotalColorAttachmentEnums - max_color_attachments);
   }
 
   GLint max_draw_buffers = 0;
   glGetIntegerv(GL_MAX_DRAW_BUFFERS, &max_draw_buffers);
   const int kTotalDrawBufferEnums = 16;
   const GLenum kDrawBuffers[] = {
     GL_DRAW_BUFFER0,
     GL_DRAW_BUFFER1,
     GL_DRAW_BUFFER2,
     GL_DRAW_BUFFER3,
@@ skipping 46 matching lines @@
   if (pos == std::string::npos) {
     extensions_ += (extensions_.empty() ? "" : " ") + str;
   }
 }
 
 FeatureInfo::~FeatureInfo() {
 }
 
 }  // namespace gles2
 }  // namespace gpu