sid
/
NazaraEngine
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Added BufferMapper class 

Used to map/unmap a buffer automatically and provide a RAII
exception-safe class


Former-commit-id: 2a4fd2e19ce3531639a86520876a3615846b27f4
This commit is contained in:
Lynix 2013-01-03 16:24:59 +01:00
parent 81e95ecddf
commit db86cc4dc3
2 changed files with 101 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

34
include/Nazara/Utility/BufferMapper.hpp Normal file
View File

@ -0,0 +1,34 @@
// Copyright (C) 2012 Jérôme Leclercq
// This file is part of the "Nazara Engine - Utility module"
// For conditions of distribution and use, see copyright notice in Config.hpp
#pragma once
#ifndef NAZARA_BUFFERMAPPER_HPP
#define NAZARA_BUFFERMAPPER_HPP
#include <Nazara/Utility/Enums.hpp>
template<class T>
class NzBufferMapper
{
public:
NzBufferMapper(T* buffer, nzBufferAccess access, unsigned int offset = 0, unsigned int length = 0);
NzBufferMapper(T& buffer, nzBufferAccess access, unsigned int offset = 0, unsigned int length = 0);
NzBufferMapper(const T* buffer, nzBufferAccess access, unsigned int offset = 0, unsigned int length = 0);
NzBufferMapper(const T& buffer, nzBufferAccess access, unsigned int offset = 0, unsigned int length = 0);
~NzBufferMapper();
const T* GetBuffer() const;
void* GetPointer() const;
void Unmap();
private:
const T* m_buffer;
void* m_ptr;
};
#include <Nazara/Utility/BufferMapper.inl>
#endif // NAZARA_BUFFERMAPPER_HPP

67
include/Nazara/Utility/BufferMapper.inl Normal file
View File

@ -0,0 +1,67 @@
// Copyright (C) 2012 Jérôme Leclercq
// This file is part of the "Nazara Engine - Core module"
// For conditions of distribution and use, see copyright notice in Config.hpp
// http://www.easyrgb.com/index.php?X=MATH
#include <Nazara/Utility/BufferMapper.hpp>
#include <Nazara/Core/Error.hpp>
#include <Nazara/Core/Debug.hpp>
template<typename T>
NzBufferMapper<T>::NzBufferMapper(T* buffer, nzBufferAccess access, unsigned int offset, unsigned int length) :
m_buffer(buffer)
{
m_ptr = buffer->Map(access, offset, length);
if (!m_ptr)
NazaraError("Failed to map buffer"); ///TODO: Unexpected
}
template<typename T>
NzBufferMapper<T>::NzBufferMapper(T& buffer, nzBufferAccess access, unsigned int offset, unsigned int length) :
NzBufferMapper(&buffer, access, offset, length)
{
}
template<typename T>
NzBufferMapper<T>::NzBufferMapper(const T* buffer, nzBufferAccess access, unsigned int offset, unsigned int length) :
m_buffer(buffer)
{
m_ptr = buffer->Map(access, offset, length);
if (!m_ptr)
NazaraError("Failed to map buffer"); ///TODO: Unexpected
}
template<typename T>
NzBufferMapper<T>::NzBufferMapper(const T& buffer, nzBufferAccess access, unsigned int offset, unsigned int length) :
NzBufferMapper(&buffer, access, offset, length)
{
}
template<typename T>
NzBufferMapper<T>::~NzBufferMapper()
{
if (m_buffer)
m_buffer->Unmap();
}
template<typename T>
const T* NzBufferMapper<T>::GetBuffer() const
{
return m_buffer;
}
template<typename T>
void* NzBufferMapper<T>::GetPointer() const
{
return m_ptr;
}
template<typename T>
void NzBufferMapper<T>::Unmap()
{
m_buffer->Unmap();
m_buffer = nullptr;
}
#include <Nazara/Core/DebugOff.hpp>