command_buffer: Implement EXT_blend_func_extended

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>
 #include "base/basictypes.h"
 #include "base/logging.h"
 #include "base/memory/ref_counted.h"
 #include "gpu/command_buffer/service/common_decoder.h"
 #include "gpu/command_buffer/service/gl_utils.h"
 #include "gpu/command_buffer/service/gles2_cmd_decoder.h"
 #include "gpu/command_buffer/service/shader_manager.h"
 #include "gpu/gpu_export.h"
 
 namespace gpu {
 namespace gles2 {
 
+class FeatureInfo;
 class ProgramCache;
 class ProgramManager;
 class Shader;
 class ShaderManager;
 class FeatureInfo;
 
 // This is used to track which attributes a particular program needs
 // so we can verify at glDrawXXX time that every attribute is either disabled
 // or if enabled that it points to a valid source.
 class GPU_EXPORT Program : public base::RefCounted<Program> {
@@ skipping 143 matching lines @@
 
   // Gets all the TransformFeedbackVarying info.
   // Return false on overflow.
   bool GetTransformFeedbackVaryings(CommonDecoder::Bucket* bucket) const;
 
   // Gather all info through glGetActiveUniformsiv, except for size, type,
   // name_length, which we gather through glGetActiveUniform in
   // glGetProgramInfoCHROMIUM.
   bool GetUniformsES3(CommonDecoder::Bucket* bucket) const;
 
+  // Returns the fragment shader output variable color name binding.
+  // Returns -1 if |original_name| is not an out variable or error.
+  GLint GetFragDataLocation(const std::string& original_name) const;
+
+  // Returns the fragment shader output variable color index binding.
+  // Returns -1 if |original_name| is not an out variable or error.
+  GLint GetFragDataIndex(const std::string& original_name) const;
+
   // Sets the sampler values for a uniform.
   // This is safe to call for any location. If the location is not
   // a sampler uniform nothing will happen.
   // Returns false if fake_location is a sampler and any value
   // is >= num_texture_units. Returns true otherwise.
   bool SetSamplers(
       GLint num_texture_units, GLint fake_location,
       GLsizei count, const GLint* value);
 
   bool IsDeleted() const {
@@ skipping 130 matching lines @@
 
   // Clears all the uniforms.
   void ClearUniforms(std::vector<uint8>* zero_buffer);
 
   // If long attribate names are mapped during shader translation, call
   // glBindAttribLocation() again with the mapped names.
   // This is called right before the glLink() call, but after shaders are
   // translated.
   void ExecuteBindAttribLocationCalls();
 
+  void ExecuteBindFragDataLocationIndexedCalls();
+
   bool AddUniformInfo(
       GLsizei size, GLenum type, GLint location, GLint fake_base_location,
       const std::string& name, const std::string& original_name,
       size_t* next_available_index);
 
   enum VariableInfoType { kUniformVariableInfo, kVaryingVariableInfo };
   // Query uniform or varying data returned by ANGLE translator by the
   // mapped name. Some drivers incorrectly return an uniform name of
   // size-1 array without "[0]". In this case, we correct the name by
   // appending "[0]" to it.
@@ skipping 93 matching lines @@
 };
 
 // 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:
   explicit ProgramManager(ProgramCache* program_cache,
                           uint32 max_varying_vectors,
+                          uint32 max_dual_source_draw_buffers,
                           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);
 
   // Gets a program.
@@ skipping 22 matching lines @@
 
   // Check if a Program is owned by this ProgramManager.
   bool IsOwned(Program* program);
 
   static int32 MakeFakeLocation(int32 index, int32 element);
 
   uint32 max_varying_vectors() const {
     return max_varying_vectors_;
   }
 
+  uint32 max_dual_source_draw_buffers() const {
+    return max_dual_source_draw_buffers_;
+  }
+
  private:
   friend class Program;
 
   void StartTracking(Program* program);
   void StopTracking(Program* program);
 
   void RemoveProgramInfoIfUnused(
       ShaderManager* shader_manager, Program* program);
 
   // Info for each "successfully linked" program by service side program Id.
   // TODO(gman): Choose a faster container.
   typedef std::map<GLuint, scoped_refptr<Program> > ProgramMap;
   ProgramMap programs_;
 
   // Counts the number of Program allocated with 'this' as its manager.
   // Allows to check no Program will outlive this.
   unsigned int program_count_;
 
   bool have_context_;
 
   // Used to clear uniforms.
   std::vector<uint8> zero_;
 
   ProgramCache* program_cache_;
 
   uint32 max_varying_vectors_;
+  uint32 max_dual_source_draw_buffers_;
 
   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_