Work around MacOSX driver bug related with glGetFragDataLocation.

gpu/command_buffer/service/program_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/program_manager.h"
 
 #include <stddef.h>
 #include <stdint.h>
 
 #include <algorithm>
@@ skipping 1009 matching lines @@
           glGetFragDataLocation(service_id_, service_name.c_str());
       if (color_name < 0)
         continue;
       GLint index = 0;
       if (feature_info().feature_flags().ext_blend_func_extended)
         index = glGetFragDataIndex(service_id_, service_name.c_str());
       if (index < 0)
         continue;
       program_output_infos_.push_back(
           ProgramOutputInfo(color_name, index, client_name));
+    } else if (feature_info().workarounds().get_frag_data_info_bug) {
+      DCHECK(!feature_info().feature_flags().ext_blend_func_extended);
+      GLint color_name =
+          glGetFragDataLocation(service_id_, service_name.c_str());
+      if (color_name >= 0) {
+        GLint index = 0;
+        for (size_t ii = 0; ii < output_var.arraySize; ++ii) {
+          std::string array_spec(
+              std::string("[") + base::IntToString(ii) + "]");
+          program_output_infos_.push_back(ProgramOutputInfo(
+              color_name + ii, index, client_name + array_spec));
+        }
+      }
     } else {
       for (size_t ii = 0; ii < output_var.arraySize; ++ii) {
         std::string array_spec(std::string("[") + base::IntToString(ii) + "]");
         std::string service_element_name(service_name + array_spec);
         GLint color_name =
             glGetFragDataLocation(service_id_, service_element_name.c_str());
         if (color_name < 0)
           continue;
         GLint index = 0;
         if (feature_info().feature_flags().ext_blend_func_extended)
@@ skipping 1525 matching lines @@
   DCHECK(program);
   program->ClearUniforms(&zero_);
 }
 
 int32_t ProgramManager::MakeFakeLocation(int32_t index, int32_t element) {
   return index + element * 0x10000;
 }
 
 }  // namespace gles2
 }  // namespace gpu