Validate fbo color image format and fragment shader output variable type.

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 <stddef.h>
 #include <stdint.h>
 
@@ skipping 372 matching lines @@
   }
 
   const std::vector<std::string>& transform_feedback_varyings() const {
     return transform_feedback_varyings_;
   }
 
   GLenum transform_feedback_buffer_mode() const {
     return transform_feedback_buffer_mode_;
   }
 
+  // See member declaration for details.
+  // The data are only valid after a successful link.
+  uint32_t fragment_output_type_mask() const {
+      return fragment_output_type_mask_;
+  }
+  uint32_t fragment_output_written_mask() const {
+      return fragment_output_written_mask_;
+  }
+
  private:
   friend class base::RefCounted<Program>;
   friend class ProgramManager;
 
   ~Program();
 
   void set_log_info(const char* str) {
     log_info_.reset(str ? new std::string(str) : NULL);
   }
 
@@ skipping 16 matching lines @@
   }
 
   // Resets the program.
   void Reset();
 
   // Updates the program info after a successful link.
   void Update();
   void UpdateUniforms();
   void UpdateFragmentInputs();
   void UpdateProgramOutputs();
+  void UpdateFragmentOutputBaseTypes();
 
   // Process the program log, replacing the hashed names with original names.
   std::string ProcessLogInfo(const std::string& log);
 
   // Updates the program log info from GL
   void UpdateLogInfo();
 
   // Clears all the uniforms.
   void ClearUniforms(std::vector<uint8_t>* zero_buffer);
 
@@ skipping 51 matching lines @@
 
   FragmentInputInfoVector fragment_input_infos_;
   FragmentInputLocationVector fragment_input_locations_;
 
   ProgramOutputInfoVector program_output_infos_;
 
   // The program this Program is tracking.
   GLuint service_id_;
 
   // Shaders by type of shader.
-  scoped_refptr<Shader>
-      attached_shaders_[kMaxAttachedShaders];
+  scoped_refptr<Shader> attached_shaders_[kMaxAttachedShaders];
 
   // True if this program is marked as deleted.
   bool deleted_;
 
   // 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_;
 
@@ skipping 13 matching lines @@
 
   GLenum transform_feedback_buffer_mode_;
 
   // Fragment input-location binding map from
   // glBindFragmentInputLocationCHROMIUM() calls.
   LocationMap bind_fragment_input_location_map_;
 
   // output variable - (location,index) binding map from
   // glBindFragDataLocation() and ..IndexedEXT() calls.
   LocationIndexMap bind_program_output_location_index_map_;
+
+  // Fragment output variable base types: FLOAT, INT, or UINT.
+  // We have up to 16 outputs, each is encoded into 2 bits, total 32 bits:
+  // the lowest 2 bits for location 0, the highest 2 bits for location 15.
+  uint32_t fragment_output_type_mask_;
+  // Same layout as above, 2 bits per location, 0x03 if a location is occupied
+  // by an output variable, 0x00 if not.
+  uint32_t fragment_output_written_mask_;
 };
 
 // Tracks the Programs.
 //
 // NOTE: To support shared resources an instance of this class will
 // need to be shared by multiple GLES2Decoders.
 class GPU_EXPORT ProgramManager {
  public:
   ProgramManager(ProgramCache* program_cache,
                  uint32_t max_varying_vectors,
+                 uint32_t max_draw_buffers,
                  uint32_t max_dual_source_draw_buffers,
                  const GpuPreferences& gpu_preferences,
                  FeatureInfo* feature_info);
   ~ProgramManager();
 
   // Must call before destruction.
   void Destroy(bool have_context);
 
   // Creates a new program.
   Program* CreateProgram(GLuint client_id, GLuint service_id);
@@ skipping 23 matching lines @@
   // variables.
   static bool HasBuiltInPrefix(const std::string& name);
 
   // Check if a Program is owned by this ProgramManager.
   bool IsOwned(Program* program) const;
 
   static int32_t MakeFakeLocation(int32_t index, int32_t element);
 
   uint32_t max_varying_vectors() const { return max_varying_vectors_; }
 
+  uint32_t max_draw_buffers() const { return max_draw_buffers_; }
+
   uint32_t max_dual_source_draw_buffers() const {
     return max_dual_source_draw_buffers_;
   }
 
  private:
   friend class Program;
 
   void StartTracking(Program* program);
   void StopTracking(Program* program);
 
@@ skipping 10 matching lines @@
   unsigned int program_count_;
 
   bool have_context_;
 
   // Used to clear uniforms.
   std::vector<uint8_t> zero_;
 
   ProgramCache* program_cache_;
 
   uint32_t max_varying_vectors_;
+  uint32_t max_draw_buffers_;
   uint32_t max_dual_source_draw_buffers_;
 
   const GpuPreferences& gpu_preferences_;
   scoped_refptr<FeatureInfo> feature_info_;
 
   DISALLOW_COPY_AND_ASSIGN(ProgramManager);
 };
 
 inline const FeatureInfo& Program::feature_info() const {
   return *manager_->feature_info_.get();
 }
 
 }  // namespace gles2
 }  // namespace gpu
 
 #endif  // GPU_COMMAND_BUFFER_SERVICE_PROGRAM_MANAGER_H_