Vulkan-Hpp/snippets/DynamicLoader.hpp

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#if VULKAN_HPP_ENABLE_DYNAMIC_LOADER_TOOL
class DynamicLoader
{
public:
# ifdef VULKAN_HPP_NO_EXCEPTIONS
DynamicLoader( std::string const & vulkanLibraryName = {} ) VULKAN_HPP_NOEXCEPT
# else
DynamicLoader( std::string const & vulkanLibraryName = {} )
# endif
{
if ( !vulkanLibraryName.empty() )
{
# if defined( __unix__ ) || defined( __APPLE__ ) || defined( __QNX__ ) || defined(__Fuchsia__)
m_library = dlopen( vulkanLibraryName.c_str(), RTLD_NOW | RTLD_LOCAL );
# elif defined( _WIN32 )
m_library = ::LoadLibraryA( vulkanLibraryName.c_str() );
# else
# error unsupported platform
# endif
}
else
{
# if defined( __unix__ ) || defined( __QNX__ ) || defined(__Fuchsia__)
m_library = dlopen( "libvulkan.so", RTLD_NOW | RTLD_LOCAL );
if ( m_library == nullptr )
{
m_library = dlopen( "libvulkan.so.1", RTLD_NOW | RTLD_LOCAL );
}
# elif defined( __APPLE__ )
m_library = dlopen( "libvulkan.dylib", RTLD_NOW | RTLD_LOCAL );
2024-01-02 12:56:05 +00:00
if (m_library == nullptr)
{
m_library = dlopen("libvulkan.1.dylib", RTLD_NOW | RTLD_LOCAL);
}
# elif defined( _WIN32 )
m_library = ::LoadLibraryA( "vulkan-1.dll" );
# else
# error unsupported platform
# endif
}
#ifndef VULKAN_HPP_NO_EXCEPTIONS
if ( m_library == nullptr )
{
// NOTE there should be an InitializationFailedError, but msvc insists on the symbol does not exist within the scope of this function.
throw std::runtime_error( "Failed to load vulkan library!" );
}
#endif
}
DynamicLoader( DynamicLoader const & ) = delete;
DynamicLoader( DynamicLoader && other ) VULKAN_HPP_NOEXCEPT : m_library(other.m_library)
{
other.m_library = nullptr;
}
DynamicLoader &operator=( DynamicLoader const & ) = delete;
DynamicLoader &operator=( DynamicLoader && other ) VULKAN_HPP_NOEXCEPT
{
std::swap(m_library, other.m_library);
return *this;
}
~DynamicLoader() VULKAN_HPP_NOEXCEPT
{
if ( m_library )
{
# if defined( __unix__ ) || defined( __APPLE__ ) || defined( __QNX__ ) || defined(__Fuchsia__)
dlclose( m_library );
# elif defined( _WIN32 )
::FreeLibrary( m_library );
# else
# error unsupported platform
# endif
}
}
template <typename T>
T getProcAddress( const char* function ) const VULKAN_HPP_NOEXCEPT
{
# if defined( __unix__ ) || defined( __APPLE__ ) || defined( __QNX__ ) || defined(__Fuchsia__)
return (T)dlsym( m_library, function );
# elif defined( _WIN32 )
return (T)::GetProcAddress( m_library, function );
# else
# error unsupported platform
# endif
}
bool success() const VULKAN_HPP_NOEXCEPT { return m_library != nullptr; }
private:
# if defined( __unix__ ) || defined( __APPLE__ ) || defined( __QNX__ ) || defined(__Fuchsia__)
void * m_library;
# elif defined( _WIN32 )
::HINSTANCE m_library;
# else
# error unsupported platform
# endif
};
#endif