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

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• Author : Geoff Lang
  Date : 2014-05-27 16:10:46
  Hash : d7e7d735
  Message : Move the GL_APICALL and similar defines to the project level. BUG=angle:658 Change-Id: Ib4fa10bb89a6658efbc20d5a763d8ec9c3a5506f Reviewed-on: https://chromium-review.googlesource.com/201465 Tested-by: Geoff Lang <geofflang@chromium.org> Reviewed-by: Jamie Madill <jmadill@chromium.org>

• src/libGLESv2/Shader.h

• //
  // Copyright (c) 2002-2013 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.
  //
  
  // Shader.h: Defines the abstract gl::Shader class and its concrete derived
  // classes VertexShader and FragmentShader. Implements GL shader objects and
  // related functionality. [OpenGL ES 2.0.24] section 2.10 page 24 and section
  // 3.8 page 84.
  
  #ifndef LIBGLESV2_SHADER_H_
  #define LIBGLESV2_SHADER_H_
  
  #include <GLES3/gl3.h>
  #include <GLES2/gl2.h>
  #include <string>
  #include <list>
  #include <vector>
  
  #include "common/shadervars.h"
  #include "common/angleutils.h"
  #include "libGLESv2/angletypes.h"
  #include "GLSLANG/ShaderLang.h"
  
  namespace rx
  {
  class Renderer;
  }
  
  namespace gl
  {
  class ResourceManager;
  
  struct PackedVarying : public Varying
  {
      unsigned int registerIndex; // Assigned during link
  
      PackedVarying(const Varying &varying)
        : Varying(varying),
          registerIndex(GL_INVALID_INDEX)
      {}
  
      bool registerAssigned() const { return registerIndex != GL_INVALID_INDEX; }
  
      void resetRegisterAssignment()
      {
          registerIndex = GL_INVALID_INDEX;
      }
  };
  
  class Shader
  {
      friend class DynamicHLSL;
  
    public:
      Shader(ResourceManager *manager, const rx::Renderer *renderer, GLuint handle);
  
      virtual ~Shader();
  
      virtual GLenum getType() = 0;
      GLuint getHandle() const;
  
      void deleteSource();
      void setSource(GLsizei count, const char *const *string, const GLint *length);
      int getInfoLogLength() const;
      void getInfoLog(GLsizei bufSize, GLsizei *length, char *infoLog) const;
      int getSourceLength() const;
      void getSource(GLsizei bufSize, GLsizei *length, char *buffer) const;
      int getTranslatedSourceLength() const;
      void getTranslatedSource(GLsizei bufSize, GLsizei *length, char *buffer) const;
      const std::vector<Uniform> &getUniforms() const;
      const std::vector<InterfaceBlock> &getInterfaceBlocks() const;
      std::vector<PackedVarying> &getVaryings();
  
      virtual void compile() = 0;
      virtual void uncompile();
      bool isCompiled() const;
      const std::string &getHLSL() const;
  
      void addRef();
      void release();
      unsigned int getRefCount() const;
      bool isFlaggedForDeletion() const;
      void flagForDeletion();
      int getShaderVersion() const;
      void resetVaryingsRegisterAssignment();
  
      static void releaseCompiler();
      static ShShaderOutput getCompilerOutputType(GLenum shader);
  
      bool usesDepthRange() const { return mUsesDepthRange; }
      bool usesPointSize() const { return mUsesPointSize; }
      rx::D3DWorkaroundType getD3DWorkarounds() const;
  
    protected:
      void parseVaryings(void *compiler);
  
      void compileToHLSL(void *compiler);
  
      void getSourceImpl(const std::string &source, GLsizei bufSize, GLsizei *length, char *buffer) const;
  
      static bool compareVarying(const PackedVarying &x, const PackedVarying &y);
  
      const rx::Renderer *const mRenderer;
  
      std::vector<PackedVarying> mVaryings;
  
      bool mUsesMultipleRenderTargets;
      bool mUsesFragColor;
      bool mUsesFragData;
      bool mUsesFragCoord;
      bool mUsesFrontFacing;
      bool mUsesPointSize;
      bool mUsesPointCoord;
      bool mUsesDepthRange;
      bool mUsesFragDepth;
      int mShaderVersion;
      bool mUsesDiscardRewriting;
      bool mUsesNestedBreak;
  
      static void *mFragmentCompiler;
      static void *mVertexCompiler;
  
    private:
      DISALLOW_COPY_AND_ASSIGN(Shader);
  
      void initializeCompiler();
  
      const GLuint mHandle;
      unsigned int mRefCount;     // Number of program objects this shader is attached to
      bool mDeleteStatus;         // Flag to indicate that the shader can be deleted when no longer in use
  
      std::string mSource;
      std::string mHlsl;
      std::string mInfoLog;
      std::vector<Uniform> mActiveUniforms;
      std::vector<InterfaceBlock> mActiveInterfaceBlocks;
  
      ResourceManager *mResourceManager;
  };
  
  class VertexShader : public Shader
  {
      friend class DynamicHLSL;
  
    public:
      VertexShader(ResourceManager *manager, const rx::Renderer *renderer, GLuint handle);
  
      ~VertexShader();
  
      virtual GLenum getType();
      virtual void compile();
      virtual void uncompile();
      int getSemanticIndex(const std::string &attributeName);
  
      const std::vector<Attribute> &activeAttributes() const { return mActiveAttributes; }
  
    private:
      DISALLOW_COPY_AND_ASSIGN(VertexShader);
  
      void parseAttributes();
  
      std::vector<Attribute> mActiveAttributes;
  };
  
  class FragmentShader : public Shader
  {
    public:
      FragmentShader(ResourceManager *manager,const rx::Renderer *renderer, GLuint handle);
  
      ~FragmentShader();
  
      virtual GLenum getType();
      virtual void compile();
      virtual void uncompile();
      const std::vector<Attribute> &getOutputVariables() const;
  
    private:
      DISALLOW_COPY_AND_ASSIGN(FragmentShader);
  
      std::vector<Attribute> mActiveOutputVariables;
  };
  }
  
  #endif   // LIBGLESV2_SHADER_H_