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

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• Hash : d193d51b
  Author :
  Date : 2024-06-17T22:46:08
  

  Replace issue ids post migration to new issue tracker
  
  This change replaces anglebug.com/NNNN links.
  
  Bug: None
  Change-Id: I8ac3aec8d2a8a844b3d7b99fc0a6b2be8da31761
  Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/5637912
  Reviewed-by: Geoff Lang <geofflang@chromium.org>
  Commit-Queue: 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/FastVector.h"
  #include "common/PackedEnums.h"
  
  #include <EGL/egl.h>
  
  #include <functional>
  #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)>;
  
  enum AttributeMapType
  {
      Invalid,
      Attrib,
      Int,
  };
  
  class AttributeMap final
  {
    public:
      static constexpr size_t kMapSize = 2;
      using Map                        = angle::FlatUnorderedMap<EGLAttrib, EGLAttrib, kMapSize>;
  
      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)));
      }
  
      using const_iterator = Map::const_iterator;
  
      template <typename PackedEnumT>
      PackedEnumT getAsPackedEnum(EGLAttrib key, PackedEnumT defaultValue) const
      {
          const_iterator 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;
  
      const_iterator begin() const;
      const_iterator end() const;
  
      [[nodiscard]] bool validate(const ValidationContext *val,
                                  const egl::Display *display,
                                  AttributeValidationFunc validationFunc) const;
  
      // TODO: remove this and validate at every call site. http://anglebug.com/42265167
      void initializeWithoutValidation() const;
  
      static AttributeMap CreateFromIntArray(const EGLint *attributes);
      static AttributeMap CreateFromAttribArray(const EGLAttrib *attributes);
  
      AttributeMapType getType() const { return mMapType; }
  
    private:
      bool isValidated() const;
  
      const Map &attribs() const
      {
          ASSERT(isValidated());
          return mValidatedAttributes;
      }
  
      Map &attribs()
      {
          ASSERT(isValidated());
          return mValidatedAttributes;
      }
  
      mutable const EGLint *mIntPointer       = nullptr;
      mutable const EGLAttrib *mAttribPointer = nullptr;
      mutable Map mValidatedAttributes;
      mutable AttributeMapType mMapType = AttributeMapType::Invalid;
  };
  }  // namespace egl
  
  #endif  // LIBANGLE_ATTRIBUTEMAP_H_
  

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