//
// 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)>;
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/6671
void initializeWithoutValidation()
const;
static AttributeMap CreateFromIntArray(
const EGLint *attributes);
static AttributeMap CreateFromAttribArray(
const EGLAttrib *attributes);
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;
};
}
// namespace egl
#endif // LIBANGLE_ATTRIBUTEMAP_H_
