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

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• Hash : a4a52f78
  Author :
  Date : 2021-11-10T12:43:37
  

  EGL: Validate CreatePbufferSurface attributes.
  
  This fixes an ASAN issue with a dEQP negative test:
  
  dEQP.EGL/functional_negative_api_create_pbuffer_surface
  
  Bug: angleproject:6660
  Change-Id: I2d052f9f948b7a2a6fe3fbb1f1621dd280bb0d36
  Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/3270978
  Commit-Queue: Jamie Madill <jmadill@chromium.org>
  Reviewed-by: Jonah Ryan-Davis <jonahr@google.com>
  Reviewed-by: Shahbaz Youssefi <syoussefi@chromium.org>
  

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• src/libANGLE/AttributeMap.h

• //
  // Copyright 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.
  //
  
  #ifndef LIBANGLE_ATTRIBUTEMAP_H_
  #define LIBANGLE_ATTRIBUTEMAP_H_
  
  #include "common/PackedEnums.h"
  
  #include <EGL/egl.h>
  
  #include <functional>
  #include <map>
  #include <vector>
  
  namespace egl
  {
  class Display;
  struct ValidationContext;
  
  // Validates {key, value} for each attribute. Generates an error and returns false on invalid usage.
  using AttributeValidationFunc =
      std::function<bool(const ValidationContext *, const Display *, EGLAttrib)>;
  
  class AttributeMap final
  {
    public:
      AttributeMap();
      AttributeMap(const AttributeMap &other);
      AttributeMap &operator=(const AttributeMap &other);
      ~AttributeMap();
  
      void insert(EGLAttrib key, EGLAttrib value);
      bool contains(EGLAttrib key) const;
  
      EGLAttrib get(EGLAttrib key) const;
      EGLAttrib get(EGLAttrib key, EGLAttrib defaultValue) const;
      EGLint getAsInt(EGLAttrib key) const;
      EGLint getAsInt(EGLAttrib key, EGLint defaultValue) const;
  
      template <typename PackedEnumT>
      PackedEnumT getAsPackedEnum(EGLAttrib key) const
      {
          return FromEGLenum<PackedEnumT>(static_cast<EGLenum>(get(key)));
      }
  
      template <typename PackedEnumT>
      PackedEnumT getAsPackedEnum(EGLAttrib key, PackedEnumT defaultValue) const
      {
          auto iter = attribs().find(key);
          return (attribs().find(key) != attribs().end())
                     ? FromEGLenum<PackedEnumT>(static_cast<EGLenum>(iter->second))
                     : defaultValue;
      }
  
      bool isEmpty() const;
      std::vector<EGLint> toIntVector() const;
  
      typedef std::map<EGLAttrib, EGLAttrib>::const_iterator const_iterator;
  
      const_iterator begin() const;
      const_iterator end() const;
  
      ANGLE_NO_DISCARD bool validate(const ValidationContext *val,
                                     const egl::Display *display,
                                     AttributeValidationFunc validationFunc) const;
  
      // TODO: remove this and validate at every call site. http://anglebug.com/6671
      void initializeWithoutValidation() const;
  
      static AttributeMap CreateFromIntArray(const EGLint *attributes);
      static AttributeMap CreateFromAttribArray(const EGLAttrib *attributes);
  
    private:
      bool isValidated() const;
  
      const std::map<EGLAttrib, EGLAttrib> &attribs() const
      {
          ASSERT(isValidated());
          return mValidatedAttributes;
      }
  
      std::map<EGLAttrib, EGLAttrib> &attribs()
      {
          ASSERT(isValidated());
          return mValidatedAttributes;
      }
  
      mutable const EGLint *mIntPointer       = nullptr;
      mutable const EGLAttrib *mAttribPointer = nullptr;
      mutable std::map<EGLAttrib, EGLAttrib> mValidatedAttributes;
  };
  }  // namespace egl
  
  #endif  // LIBANGLE_ATTRIBUTEMAP_H_
  

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