Improve indexed gl state related GL commands.

gpu/command_buffer/service/gles2_cmd_validation_implementation_autogen.h

 // Copyright 2014 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.
 
 // This file is auto-generated from
 // gpu/command_buffer/build_gles2_cmd_buffer.py
 // It's formatted by clang-format using chromium coding style:
 //    clang-format -i -style=chromium filename
 // DO NOT EDIT!
 
@@ skipping 727 matching lines @@
     case GL_ANY_SAMPLES_PASSED_CONSERVATIVE_EXT:
     case GL_COMMANDS_ISSUED_CHROMIUM:
     case GL_LATENCY_QUERY_CHROMIUM:
     case GL_ASYNC_PIXEL_PACK_COMPLETED_CHROMIUM:
     case GL_COMMANDS_COMPLETED_CHROMIUM:
       return true;
   }
   return false;
 };
 
-bool Validators::ReadBufferValidator::IsValid(const GLenum value) const {
-  switch (value) {
-    case GL_NONE:
-    case GL_BACK:
-    case GL_COLOR_ATTACHMENT0:
-    case GL_COLOR_ATTACHMENT1:
-    case GL_COLOR_ATTACHMENT2:
-    case GL_COLOR_ATTACHMENT3:
-    case GL_COLOR_ATTACHMENT4:
-    case GL_COLOR_ATTACHMENT5:
-    case GL_COLOR_ATTACHMENT6:
-    case GL_COLOR_ATTACHMENT7:
-    case GL_COLOR_ATTACHMENT8:
-    case GL_COLOR_ATTACHMENT9:
-    case GL_COLOR_ATTACHMENT10:
-    case GL_COLOR_ATTACHMENT11:
-    case GL_COLOR_ATTACHMENT12:
-    case GL_COLOR_ATTACHMENT13:
-    case GL_COLOR_ATTACHMENT14:
-    case GL_COLOR_ATTACHMENT15:
-      return true;
-  }
-  return false;
+static const GLenum valid_read_buffer_table[] = {
+    GL_NONE,
+    GL_BACK,
+    GL_COLOR_ATTACHMENT0,
+    GL_COLOR_ATTACHMENT1,
+    GL_COLOR_ATTACHMENT2,
+    GL_COLOR_ATTACHMENT3,
+    GL_COLOR_ATTACHMENT4,
+    GL_COLOR_ATTACHMENT5,
+    GL_COLOR_ATTACHMENT6,
+    GL_COLOR_ATTACHMENT7,
+    GL_COLOR_ATTACHMENT8,
+    GL_COLOR_ATTACHMENT9,
+    GL_COLOR_ATTACHMENT10,
+    GL_COLOR_ATTACHMENT11,
+    GL_COLOR_ATTACHMENT12,
+    GL_COLOR_ATTACHMENT13,
+    GL_COLOR_ATTACHMENT14,
+    GL_COLOR_ATTACHMENT15,
 };
 
 static const GLenum valid_read_pixel_format_table[] = {
     GL_ALPHA, GL_RGB, GL_RGBA,
 };
 
 static const GLenum valid_read_pixel_format_table_es3[] = {
     GL_RED,        GL_RED_INTEGER, GL_RG,
     GL_RG_INTEGER, GL_RGB_INTEGER, GL_RGBA_INTEGER,
 };
@@ skipping 605 matching lines @@
       g_l_state(valid_g_l_state_table, arraysize(valid_g_l_state_table)),
       get_tex_param_target(valid_get_tex_param_target_table,
                            arraysize(valid_get_tex_param_target_table)),
       hint_target(valid_hint_target_table, arraysize(valid_hint_target_table)),
       image_internal_format(valid_image_internal_format_table,
                             arraysize(valid_image_internal_format_table)),
       image_usage(valid_image_usage_table, arraysize(valid_image_usage_table)),
       index_type(valid_index_type_table, arraysize(valid_index_type_table)),
       pixel_store(valid_pixel_store_table, arraysize(valid_pixel_store_table)),
       pixel_type(valid_pixel_type_table, arraysize(valid_pixel_type_table)),
+      read_buffer(valid_read_buffer_table, arraysize(valid_read_buffer_table)),
       read_pixel_format(valid_read_pixel_format_table,
                         arraysize(valid_read_pixel_format_table)),
       read_pixel_type(valid_read_pixel_type_table,
                       arraysize(valid_read_pixel_type_table)),
       render_buffer_format(valid_render_buffer_format_table,
                            arraysize(valid_render_buffer_format_table)),
       render_buffer_parameter(valid_render_buffer_parameter_table,
                               arraysize(valid_render_buffer_parameter_table)),
       render_buffer_target(valid_render_buffer_target_table,
                            arraysize(valid_render_buffer_target_table)),
@@ skipping 103 matching lines @@
   texture_stencil_renderable_internal_format.AddValues(
       valid_texture_stencil_renderable_internal_format_table_es3,
       arraysize(valid_texture_stencil_renderable_internal_format_table_es3));
   vertex_attrib_type.AddValues(valid_vertex_attrib_type_table_es3,
                                arraysize(valid_vertex_attrib_type_table_es3));
   vertex_attribute.AddValues(valid_vertex_attribute_table_es3,
                              arraysize(valid_vertex_attribute_table_es3));
 }
 
 #endif  // GPU_COMMAND_BUFFER_SERVICE_GLES2_CMD_VALIDATION_IMPLEMENTATION_AUTOGEN_H_