kc3-lang/angle/src/libANGLE/ContextState.h

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• Hash : e4477001
  Author :
  Date : 2017-12-01T14:39:58
  

  Add PackedEnumBitSet, use it for buffer binding validation
  
  Includes angle::BitSetT changes from jmadill@chromium.org
  
  BUG=angleproject:2169
  
  Change-Id: I9f896613f5c6cdc91281cb9a00134f67291870d9
  Reviewed-on: https://chromium-review.googlesource.com/804177
  Reviewed-by: Corentin Wallez <cwallez@chromium.org>
  Reviewed-by: Geoff Lang <geofflang@chromium.org>
  Commit-Queue: Corentin Wallez <cwallez@chromium.org>
  

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• src/libANGLE/ContextState.h

• //
  // Copyright (c) 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.
  //
  
  // ContextState: Container class for all GL context state, caps and objects.
  
  #ifndef LIBANGLE_CONTEXTSTATE_H_
  #define LIBANGLE_CONTEXTSTATE_H_
  
  #include "common/MemoryBuffer.h"
  #include "common/angleutils.h"
  #include "libANGLE/State.h"
  #include "libANGLE/Version.h"
  #include "libANGLE/params.h"
  
  namespace gl
  {
  class BufferManager;
  class ContextState;
  class FramebufferManager;
  class PathManager;
  class ProgramPipelineManager;
  class RenderbufferManager;
  class SamplerManager;
  class ShaderProgramManager;
  class SyncManager;
  class TextureManager;
  class ValidationContext;
  
  static constexpr Version ES_2_0 = Version(2, 0);
  static constexpr Version ES_3_0 = Version(3, 0);
  static constexpr Version ES_3_1 = Version(3, 1);
  
  using ContextID = uintptr_t;
  
  class ContextState final : angle::NonCopyable
  {
    public:
      ContextState(ContextID context,
                   const ContextState *shareContextState,
                   TextureManager *shareTextures,
                   const Version &clientVersion,
                   State *state,
                   const Caps &caps,
                   const TextureCapsMap &textureCaps,
                   const Extensions &extensions,
                   const Limitations &limitations);
      ~ContextState();
  
      ContextID getContextID() const { return mContext; }
      GLint getClientMajorVersion() const { return mClientVersion.major; }
      GLint getClientMinorVersion() const { return mClientVersion.minor; }
      const Version &getClientVersion() const { return mClientVersion; }
      const State &getState() const { return *mState; }
      const Caps &getCaps() const { return mCaps; }
      const TextureCapsMap &getTextureCaps() const { return mTextureCaps; }
      const Extensions &getExtensions() const { return mExtensions; }
      const Limitations &getLimitations() const { return mLimitations; }
  
      const TextureCaps &getTextureCap(GLenum internalFormat) const;
  
      bool usingDisplayTextureShareGroup() const;
  
      bool isWebGL() const;
      bool isWebGL1() const;
  
    private:
      friend class Context;
      friend class ValidationContext;
  
      Version mClientVersion;
      ContextID mContext;
      State *mState;
      const Caps &mCaps;
      const TextureCapsMap &mTextureCaps;
      const Extensions &mExtensions;
      const Limitations &mLimitations;
  
      BufferManager *mBuffers;
      ShaderProgramManager *mShaderPrograms;
      TextureManager *mTextures;
      RenderbufferManager *mRenderbuffers;
      SamplerManager *mSamplers;
      SyncManager *mSyncs;
      PathManager *mPaths;
      FramebufferManager *mFramebuffers;
      ProgramPipelineManager *mPipelines;
  };
  
  class ValidationContext : angle::NonCopyable
  {
    public:
      ValidationContext(const ValidationContext *shareContext,
                        TextureManager *shareTextures,
                        const Version &clientVersion,
                        State *state,
                        const Caps &caps,
                        const TextureCapsMap &textureCaps,
                        const Extensions &extensions,
                        const Limitations &limitations,
                        bool skipValidation);
      virtual ~ValidationContext();
  
      virtual void handleError(const Error &error) = 0;
  
      const ContextState &getContextState() const { return mState; }
      GLint getClientMajorVersion() const { return mState.getClientMajorVersion(); }
      GLint getClientMinorVersion() const { return mState.getClientMinorVersion(); }
      const Version &getClientVersion() const { return mState.getClientVersion(); }
      const State &getGLState() const { return mState.getState(); }
      const Caps &getCaps() const { return mState.getCaps(); }
      const TextureCapsMap &getTextureCaps() const { return mState.getTextureCaps(); }
      const Extensions &getExtensions() const { return mState.getExtensions(); }
      const Limitations &getLimitations() const { return mState.getLimitations(); }
      bool skipValidation() const { return mSkipValidation; }
  
      // Specific methods needed for validation.
      bool getQueryParameterInfo(GLenum pname, GLenum *type, unsigned int *numParams);
      bool getIndexedQueryParameterInfo(GLenum target, GLenum *type, unsigned int *numParams);
  
      Program *getProgram(GLuint handle) const;
      Shader *getShader(GLuint handle) const;
  
      bool isTextureGenerated(GLuint texture) const;
      bool isBufferGenerated(GLuint buffer) const;
      bool isRenderbufferGenerated(GLuint renderbuffer) const;
      bool isFramebufferGenerated(GLuint framebuffer) const;
      bool isProgramPipelineGenerated(GLuint pipeline) const;
  
      bool usingDisplayTextureShareGroup() const;
  
      // Hack for the special WebGL 1 "DEPTH_STENCIL" internal format.
      GLenum getConvertedRenderbufferFormat(GLenum internalformat) const;
  
      bool isWebGL() const { return mState.isWebGL(); }
      bool isWebGL1() const { return mState.isWebGL1(); }
  
      template <typename T>
      const T &getParams() const;
  
      bool isValidBufferBinding(BufferBinding binding) const { return mValidBufferBindings[binding]; }
  
    protected:
      ContextState mState;
      bool mSkipValidation;
      bool mDisplayTextureShareGroup;
  
      // Stores for each buffer binding type whether is it allowed to be used in this context.
      angle::PackedEnumBitSet<BufferBinding> mValidBufferBindings;
  
      // Caches entry point parameters and values re-used between layers.
      mutable const ParamTypeInfo *mSavedArgsType;
      static constexpr size_t kParamsBufferSize = 64u;
      mutable std::array<uint8_t, kParamsBufferSize> mParamsBuffer;
  };
  
  template <typename T>
  const T &ValidationContext::getParams() const
  {
      const T *params = reinterpret_cast<T *>(mParamsBuffer.data());
      ASSERT(mSavedArgsType->hasDynamicType(T::TypeInfo));
      return *params;
  }
  
  }  // namespace gl
  
  #endif  // LIBANGLE_CONTEXTSTATE_H_
  

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