kc3-lang/angle/src/libGLESv2/Program.h

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• Author : Geoff Lang
  Date : 2014-02-05 16:28:24
  Hash : 48dcae7b
  Message : Added transform feedback shader generation. BUG=angle:495 Change-Id: I41a0177fd3eb43c9f4ab9e54faeadac3eb483c2c Reviewed-on: https://chromium-review.googlesource.com/185035 Reviewed-by: Shannon Woods <shannonwoods@chromium.org> Tested-by: Geoff Lang <geofflang@chromium.org>

• src/libGLESv2/Program.h

• //
  // Copyright (c) 2002-2014 The ANGLE Project Authors. All rights reserved.
  // Use of this source code is governed by a BSD-style license that can be
  // found in the LICENSE file.
  //
  
  // Program.h: Defines the gl::Program class. Implements GL program objects
  // and related functionality. [OpenGL ES 2.0.24] section 2.10.3 page 28.
  
  #ifndef LIBGLESV2_PROGRAM_H_
  #define LIBGLESV2_PROGRAM_H_
  
  #include <string>
  #include <set>
  
  #include "common/angleutils.h"
  #include "common/RefCountObject.h"
  #include "libGLESv2/Constants.h"
  
  namespace rx
  {
  class Renderer;
  }
  
  namespace gl
  {
  class ResourceManager;
  class FragmentShader;
  class VertexShader;
  class ProgramBinary;
  class Shader;
  
  extern const char * const g_fakepath;
  
  class AttributeBindings
  {
    public:
      AttributeBindings();
      ~AttributeBindings();
  
      void bindAttributeLocation(GLuint index, const char *name);
      int getAttributeBinding(const std::string &name) const;
  
    private:
      std::set<std::string> mAttributeBinding[MAX_VERTEX_ATTRIBS];
  };
  
  class InfoLog
  {
    public:
      InfoLog();
      ~InfoLog();
  
      int getLength() const;
      void getLog(GLsizei bufSize, GLsizei *length, char *infoLog);
  
      void appendSanitized(const char *message);
      void append(const char *info, ...);
      void reset();
    private:
      DISALLOW_COPY_AND_ASSIGN(InfoLog);
      char *mInfoLog;
  };
  
  class Program
  {
    public:
      Program(rx::Renderer *renderer, ResourceManager *manager, GLuint handle);
  
      ~Program();
  
      bool attachShader(Shader *shader);
      bool detachShader(Shader *shader);
      int getAttachedShadersCount() const;
  
      void bindAttributeLocation(GLuint index, const char *name);
  
      bool link();
      bool isLinked();
      bool setProgramBinary(const void *binary, GLsizei length);
      ProgramBinary *getProgramBinary() const;
  
      int getInfoLogLength() const;
      void getInfoLog(GLsizei bufSize, GLsizei *length, char *infoLog);
      void getAttachedShaders(GLsizei maxCount, GLsizei *count, GLuint *shaders);
  
      void getActiveAttribute(GLuint index, GLsizei bufsize, GLsizei *length, GLint *size, GLenum *type, GLchar *name);
      GLint getActiveAttributeCount();
      GLint getActiveAttributeMaxLength();
  
      void getActiveUniform(GLuint index, GLsizei bufsize, GLsizei *length, GLint *size, GLenum *type, GLchar *name);
      GLint getActiveUniformCount();
      GLint getActiveUniformMaxLength();
  
      GLint getActiveUniformBlockCount();
      GLint getActiveUniformBlockMaxLength();
  
      void bindUniformBlock(GLuint uniformBlockIndex, GLuint uniformBlockBinding);
      GLuint getUniformBlockBinding(GLuint uniformBlockIndex) const;
  
      void setTransformFeedbackVaryings(GLsizei count, const GLchar *const *varyings, GLenum bufferMode);
      void getTransformFeedbackVarying(GLuint index, GLsizei bufSize, GLsizei *length, GLsizei *size, GLenum *type, GLchar *name) const;
      GLsizei getTransformFeedbackVaryingCount() const;
      GLsizei getTransformFeedbackVaryingMaxLength() const;
      GLenum getTransformFeedbackBufferMode() const;
  
      void addRef();
      void release();
      unsigned int getRefCount() const;
      void flagForDeletion();
      bool isFlaggedForDeletion() const;
  
      void validate();
      bool isValidated() const;
  
      GLint getProgramBinaryLength() const;
  
    private:
      DISALLOW_COPY_AND_ASSIGN(Program);
  
      void unlink(bool destroy = false);
      void resetUniformBlockBindings();
  
      FragmentShader *mFragmentShader;
      VertexShader *mVertexShader;
  
      AttributeBindings mAttributeBindings;
  
      GLuint mUniformBlockBindings[IMPLEMENTATION_MAX_COMBINED_SHADER_UNIFORM_BUFFERS];
  
      std::vector<std::string> mTransformFeedbackVaryings;
      GLuint mTransformFeedbackBufferMode;
  
      BindingPointer<ProgramBinary> mProgramBinary;
      bool mLinked;
      bool mDeleteStatus;   // Flag to indicate that the program can be deleted when no longer in use
  
      unsigned int mRefCount;
  
      ResourceManager *mResourceManager;
      rx::Renderer *mRenderer;
      const GLuint mHandle;
  
      InfoLog mInfoLog;
  };
  }
  
  #endif   // LIBGLESV2_PROGRAM_H_