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//-------------------------------------------------------------------------------------------------------------------------------------------------------------
//
// Metal/MTLPrivate.hpp
//
// Copyright 2020-2023 Apple Inc.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//
//-------------------------------------------------------------------------------------------------------------------------------------------------------------
#pragma once
//-------------------------------------------------------------------------------------------------------------------------------------------------------------
#include "MTLDefines.hpp"
#include <objc/runtime.h>
//-------------------------------------------------------------------------------------------------------------------------------------------------------------
#define _MTL_PRIVATE_CLS(symbol) (Private::Class::s_k##symbol)
#define _MTL_PRIVATE_SEL(accessor) (Private::Selector::s_k##accessor)
//-------------------------------------------------------------------------------------------------------------------------------------------------------------
#if defined(MTL_PRIVATE_IMPLEMENTATION)
#ifdef METALCPP_SYMBOL_VISIBILITY_HIDDEN
#define _MTL_PRIVATE_VISIBILITY __attribute__((visibility("hidden")))
#else
#define _MTL_PRIVATE_VISIBILITY __attribute__((visibility("default")))
#endif // METALCPP_SYMBOL_VISIBILITY_HIDDEN
#define _MTL_PRIVATE_IMPORT __attribute__((weak_import))
#ifdef __OBJC__
#define _MTL_PRIVATE_OBJC_LOOKUP_CLASS(symbol) ((__bridge void*)objc_lookUpClass(#symbol))
#define _MTL_PRIVATE_OBJC_GET_PROTOCOL(symbol) ((__bridge void*)objc_getProtocol(#symbol))
#else
#define _MTL_PRIVATE_OBJC_LOOKUP_CLASS(symbol) objc_lookUpClass(#symbol)
#define _MTL_PRIVATE_OBJC_GET_PROTOCOL(symbol) objc_getProtocol(#symbol)
#endif // __OBJC__
#define _MTL_PRIVATE_DEF_CLS(symbol) void* s_k##symbol _MTL_PRIVATE_VISIBILITY = _MTL_PRIVATE_OBJC_LOOKUP_CLASS(symbol)
#define _MTL_PRIVATE_DEF_PRO(symbol) void* s_k##symbol _MTL_PRIVATE_VISIBILITY = _MTL_PRIVATE_OBJC_GET_PROTOCOL(symbol)
#define _MTL_PRIVATE_DEF_SEL(accessor, symbol) SEL s_k##accessor _MTL_PRIVATE_VISIBILITY = sel_registerName(symbol)
#include <dlfcn.h>
#define MTL_DEF_FUNC( name, signature ) \
using Fn##name = signature; \
Fn##name name = reinterpret_cast< Fn##name >( dlsym( RTLD_DEFAULT, #name ) )
namespace MTL::Private
{
template <typename _Type>
inline _Type const LoadSymbol(const char* pSymbol)
{
const _Type* pAddress = static_cast<_Type*>(dlsym(RTLD_DEFAULT, pSymbol));
return pAddress ? *pAddress : nullptr;
}
} // MTL::Private
#if defined(__MAC_10_16) || defined(__MAC_11_0) || defined(__MAC_12_0) || defined(__MAC_13_0) || defined(__MAC_14_0) || defined(__IPHONE_14_0) || defined(__IPHONE_15_0) || defined(__IPHONE_16_0) || defined(__IPHONE_17_0) || defined(__TVOS_14_0) || defined(__TVOS_15_0) || defined(__TVOS_16_0) || defined(__TVOS_17_0)
#define _MTL_PRIVATE_DEF_STR(type, symbol) \
_MTL_EXTERN type const MTL##symbol _MTL_PRIVATE_IMPORT; \
type const MTL::symbol = (nullptr != &MTL##symbol) ? MTL##symbol : nullptr
#define _MTL_PRIVATE_DEF_CONST(type, symbol) \
_MTL_EXTERN type const MTL##symbol _MTL_PRIVATE_IMPORT; \
type const MTL::symbol = (nullptr != &MTL##symbol) ? MTL##symbol : nullptr
#define _MTL_PRIVATE_DEF_WEAK_CONST(type, symbol) \
_MTL_EXTERN type const MTL##symbol; \
type const MTL::symbol = Private::LoadSymbol<type>("MTL" #symbol)
#else
#define _MTL_PRIVATE_DEF_STR(type, symbol) \
_MTL_EXTERN type const MTL##symbol; \
type const MTL::symbol = Private::LoadSymbol<type>("MTL" #symbol)
#define _MTL_PRIVATE_DEF_CONST(type, symbol) \
_MTL_EXTERN type const MTL##symbol; \
type const MTL::symbol = Private::LoadSymbol<type>("MTL" #symbol)
#define _MTL_PRIVATE_DEF_WEAK_CONST(type, symbol) _MTL_PRIVATE_DEF_CONST(type, symbol)
#endif // defined(__MAC_10_16) || defined(__MAC_11_0) || defined(__MAC_12_0) || defined(__MAC_13_0) || defined(__MAC_14_0) || defined(__IPHONE_14_0) || defined(__IPHONE_15_0) || defined(__IPHONE_16_0) || defined(__IPHONE_17_0) || defined(__TVOS_14_0) || defined(__TVOS_15_0) || defined(__TVOS_16_0) || defined(__TVOS_17_0)
#else
#define _MTL_PRIVATE_DEF_CLS(symbol) extern void* s_k##symbol
#define _MTL_PRIVATE_DEF_PRO(symbol) extern void* s_k##symbol
#define _MTL_PRIVATE_DEF_SEL(accessor, symbol) extern SEL s_k##accessor
#define _MTL_PRIVATE_DEF_STR(type, symbol) extern type const MTL::symbol
#define _MTL_PRIVATE_DEF_CONST(type, symbol) extern type const MTL::symbol
#define _MTL_PRIVATE_DEF_WEAK_CONST(type, symbol) extern type const MTL::symbol
#endif // MTL_PRIVATE_IMPLEMENTATION
//-------------------------------------------------------------------------------------------------------------------------------------------------------------
namespace MTL
{
namespace Private
{
namespace Class
{
} // Class
} // Private
} // MTL
//-------------------------------------------------------------------------------------------------------------------------------------------------------------
namespace MTL
{
namespace Private
{
namespace Protocol
{
} // Protocol
} // Private
} // MTL
//-------------------------------------------------------------------------------------------------------------------------------------------------------------
namespace MTL
{
namespace Private
{
namespace Selector
{
_MTL_PRIVATE_DEF_SEL(beginScope,
"beginScope");
_MTL_PRIVATE_DEF_SEL(endScope,
"endScope");
} // Class
} // Private
} // MTL
//-------------------------------------------------------------------------------------------------------------------------------------------------------------
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