Fails glLinkProgram if two glBindAttribLocation conflicts.

gpu/command_buffer/service/program_manager.h

 // 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.
 
 #ifndef GPU_COMMAND_BUFFER_SERVICE_PROGRAM_MANAGER_H_
 #define GPU_COMMAND_BUFFER_SERVICE_PROGRAM_MANAGER_H_
 
 #include <map>
 #include <string>
 #include <vector>
@@ skipping 135 matching lines @@
 
     const std::string* log_info() const {
       return log_info_.get();
     }
 
     bool InUse() const {
       DCHECK_GE(use_count_, 0);
       return use_count_ != 0;
     }
 
+    // Sets attribute-location binding from a glBindAttribLocation() call.
+    void SetAttribLocationBinding(const std::string& attrib,
+                                  GLint location) {
+      bind_attrib_location_map_[attrib] = location;
+    }
+
+    // Detects if there are attribute location conflicts from
+    // glBindAttribLocation() calls.
+    // We only consider the declared attributes in the program.
+    bool DetectAttribLocationBindingConflicts() const;
+
     static inline GLint GetFakeLocation(
         GLint fake_base_location, GLint element_index) {
       return fake_base_location | element_index << 16;
     }
 
    private:
     friend class base::RefCounted<ProgramInfo>;
     friend class ProgramManager;
 
     ~ProgramInfo();
@@ skipping 74 matching lines @@
     ShaderManager::ShaderInfo::Ref attached_shaders_[kMaxAttachedShaders];
 
     // This is true if glLinkProgram was successful at least once.
     bool valid_;
 
     // This is true if glLinkProgram was successful last time it was called.
     bool link_status_;
 
     // Log info
     scoped_ptr<std::string> log_info_;
+
+    // attribute-location binding map from glBindAttribLocation() calls.
+    std::map<std::string, GLint> bind_attrib_location_map_;
   };
 
   ProgramManager();
   ~ProgramManager();
 
   // Must call before destruction.
   void Destroy(bool have_context);
 
   // Creates a new program info.
   ProgramInfo* CreateProgramInfo(GLuint client_id, GLuint service_id);
@@ skipping 33 matching lines @@
   void RemoveProgramInfoIfUnused(
       ShaderManager* shader_manager, ProgramInfo* info);
 
   DISALLOW_COPY_AND_ASSIGN(ProgramManager);
 };
 
 }  // namespace gles2
 }  // namespace gpu
 
 #endif  // GPU_COMMAND_BUFFER_SERVICE_PROGRAM_MANAGER_H_