DirectX 11 访问冲突
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【中文标题】DirectX 11 访问冲突【英文标题】：DirectX 11 Access Violation 【发布时间】：2014-02-07 15:21:38 【问题描述】：我从使用 Visual Studio 2010 构建的旧 DirectX 11.0 项目中获取了一个可用的 CSprite 类。我只是对其进行了一些修改，我提取了一些变量、getter 和 setter 并将其放入名为 CObject 的新类中.现在我想用 Visual Studio 2012 构建。
但是现在我每次尝试从 Visual Studio 创建一个 CSprite 对象时都会出现“访问冲突”错误：
Engine.exe 中 0x010A74A8 处未处理的异常：0xC0000005：访问冲突读取位置 0x00000000。
似乎我无法创建任何 DirectX 11 接口对象，如果我想读出对象 Visual Studio 只需说“无法读取内存”。
源码：
对象.h
#ifndef __OBJECT_H__
#define __OBJECT_H__
#include "../DX11Core/DX11Util.h"
class CObject
public:
CObject();
~CObject()
void SetStatus( STRING _status ) m_status = _status;
void SetTag( STRING _tag ) m_tag = _tag;
void SetPosition( float _x, float _y, float _z ) SetPosition( XMFLOAT3( _x, _y, _z ) );
void SetPosition( XMFLOAT3 _pos ) m_position = _pos;
void SetRotation( float _rot ) m_fRotation = _rot;
void SetScale( float _x, float _y ) SetScale( XMFLOAT3( _x, _y, 1 ) );
void SetScale( XMFLOAT3 _scale ) m_scale = _scale;
void SetAlpha( float _alpha ) m_fAlpha = Clamp( _alpha, 0.0f, 1.0f );
void SetActive( bool _active ) m_bActive = _active;
XMFLOAT3& GetPosition() return m_position;
STRING GetStatus() return m_status;
STRING GetTag() return m_tag;
float GetXPosition() return m_position.x;
float GetYPosition() return m_position.y;
float GetZPosition() return m_position.z;
float GetRotation() return m_fRotation;
XMFLOAT3& GetScale() return m_scale;
float GetXScale() return m_scale.x;
float GetYScale() return m_scale.y;
bool IsActive() return m_bActive;
protected:
XMFLOAT3 m_position;
STRING m_tag;
STRING m_status;
float m_fRotation;
XMFLOAT3 m_scale;
float m_fAlpha;
bool m_bActive;
;
#endif // __OBJECT_H__
Sprite.h
#ifndef __SPRITE_H__
#define __SPRITE_H__
#include "Object.h"
#include "../DX11Core/DX11Core.h"
#include "../DX11Core/GraphicHelper.h"
struct Vertex
XMFLOAT3 Pos;
XMFLOAT2 Tex;
;
class CSprite : public CObject
public:
CSprite( STRING _filename );
~CSprite()
RELEASE_COM( m_pVertices );
RELEASE_COM( m_pTextureSampler );
RELEASE_COM( m_pTextureSRV );
int Initialize();
int Update( const float _dt );
void Render();
#pragma region Getter & Setter
void SetTexture( STRING _filename );
void SetFrameCount( int _framecount ) m_nFrameCount = _framecount;
void SetFrame( int _frameidx )
if( _frameidx >= 0 && _frameidx < m_nFrameCount )
m_nActualFrame = _frameidx;
BuildVertices();
void SetPosition( XMFLOAT3& _pos )
m_position = _pos;
m_position.x -= ( theDXCore->GetClientWidth() / 2 );
m_position.y *= -1.0f;
m_position.y += ( theDXCore->GetClientHeight() / 2 );
float GetLeftBounding() const return ( m_position.x + m_fBoundingLeft );
float GetRightBounding() const return ( m_position.x + m_fBoundingRight );
float GetTopBounding() const return ( m_position.y + m_fBoundingTop );
float GetBottomBounding() const return ( m_position.y + m_fBoundingBottom );
int GetFrameIdx() const return m_nActualFrame;
XMMATRIX GetWorldMatrix() const;
Vertex GetVertex( int _i) const return tempVertex[_i];
#pragma endregion
private:
void BuildVertices();
int m_nFrameCount;
int m_nActualFrame;
float m_fFrameDT;
float m_fActualFrameDT;
float m_fBoundingLeft;
float m_fBoundingRight;
float m_fBoundingTop;
float m_fBoundingBottom;
Vertex tempVertex[6];
ID3D11Buffer* m_pVertices;
ID3D11ShaderResourceView* m_pTextureSRV;
ID3D11SamplerState* m_pTextureSampler;
ID3DX11EffectMatrixVariable* m_pFXWorld;
ID3DX11EffectShaderResourceVariable* m_pFXTexture;
ID3DX11EffectSamplerVariable* m_pFXTextureSampler;
;
#endif //__SPRITE_H__
Sprite.cpp |我在问题开始的地方插入了两个 cmets
#include "Sprite.h"
#include "SpriteManager.h"
CSprite::CSprite( STRING _filename )
: m_nFrameCount( 1 )
, m_nActualFrame( 0 )
, m_pTextureSRV( 00 )
, m_pTextureSampler( 00 )
, m_pVertices( 00 )
, m_pFXWorld( 00 )
, m_pFXTexture( 00 )
, m_pFXTextureSampler( 00 )
, m_fFrameDT( 1000.0f )
, m_fActualFrameDT( 0.0f )
GraphicHelper::CreateSRV( m_pTextureSRV, _filename ); // can't create ID3D11ShaderResourceView
this->Initialize();
int CSprite::Initialize()
D3D11_SAMPLER_DESC samplerDesc = ;
samplerDesc.AddressU = samplerDesc.AddressV = samplerDesc.AddressW = D3D11_TEXTURE_ADDRESS_WRAP;
samplerDesc.ComparisonFunc = D3D11_COMPARISON_NEVER;
samplerDesc.Filter = D3D11_FILTER_MIN_MAG_MIP_LINEAR;
// samplerDesc.Filter = D3D11_FILTER_ANISOTROPIC;
// samplerDesc.MaxAnisotropy = 4;
samplerDesc.MaxLOD = D3D11_FLOAT32_MAX;
HR( theDevice->CreateSamplerState( &samplerDesc, &m_pTextureSampler ) );
BuildVertices( );
D3D11_SAMPLER_DESC colorMapDesc = ;
colorMapDesc.AddressU = colorMapDesc.AddressV = colorMapDesc.AddressW = D3D11_TEXTURE_ADDRESS_WRAP;
colorMapDesc.ComparisonFunc = D3D11_COMPARISON_NEVER;
colorMapDesc.Filter = D3D11_FILTER_MIN_MAG_MIP_LINEAR;
// colorMapDesc.Filter = D3D11_FILTER_ANISOTROPIC;
// colorMapDesc.MaxAnisotropy = 4;
colorMapDesc.MaxLOD = D3D11_FLOAT32_MAX;
HR( theDevice->CreateSamplerState( &colorMapDesc, &m_pTextureSampler ) );
m_pFXWorld = theSpriteManager->GetFX()->GetVariableByName( "gWorld" )->AsMatrix();
m_pFXTexture = theSpriteManager->GetFX()->GetVariableByName( "gTexture" )->AsShaderResource();
m_pFXTextureSampler = theSpriteManager->GetFX()->GetVariableByName( "gTextureSampler" )->AsSampler();
return 0;
void CSprite::SetTexture( STRING _filename )
GraphicHelper::CreateSRV( m_pTextureSRV, _filename );
XMMATRIX CSprite::GetWorldMatrix() const
XMMATRIX translation = XMMatrixTranslation( m_position.x, m_position.y, m_position.z );
XMMATRIX rotationZ = XMMatrixRotationZ( m_fRotation );
XMMATRIX scale = XMMatrixScaling( m_scale.x, m_scale.y, 1.0f );
return scale * rotationZ * translation;
void CSprite::BuildVertices()
RELEASE_COM( m_pVertices );
ID3D11Resource* pcolorTex = 00;
m_pTextureSRV->GetResource( &pcolorTex ); //throw access violation
D3D11_TEXTURE2D_DESC colorTexDesc = ;
( reinterpret_cast<ID3D11Texture2D*>( pcolorTex ) )->GetDesc( &colorTexDesc );
pcolorTex->Release();
colorTexDesc.Width /= m_nFrameCount;
// Calculate corners for uneven boundings
float left = -(float)(int)( colorTexDesc.Width * 0.5f );
float right = (float)((int)( colorTexDesc.Width * 0.5f ) );
if( colorTexDesc.Width % 2 == 1 ) right += 1.0f;
m_fBoundingLeft = left;
m_fBoundingRight = right;
float top = (float)(int)( colorTexDesc.Height * 0.5f );
float bottom = -(float)(int)( colorTexDesc.Height * 0.5f );
if( colorTexDesc.Height % 2 == 1 ) bottom -= 1.0f;
m_fBoundingTop = top;
m_fBoundingBottom = bottom;
float FrameWidth = 1.0f / m_nFrameCount;
// Create Vertexbuffer
Vertex vertices[] =
XMFLOAT3( right, top, 1.0f ), XMFLOAT2( FrameWidth * ( m_nActualFrame + 1 ), 0.0f ) ,
XMFLOAT3( right, bottom, 1.0f ), XMFLOAT2( FrameWidth * ( m_nActualFrame + 1 ), 1.0f ) ,
XMFLOAT3( left, bottom, 1.0f ), XMFLOAT2( FrameWidth * ( m_nActualFrame ), 1.0f ) ,
XMFLOAT3( left, bottom, 1.0f ), XMFLOAT2( FrameWidth * ( m_nActualFrame ), 1.0f ) ,
XMFLOAT3( left, top, 1.0f ), XMFLOAT2( FrameWidth * ( m_nActualFrame ), 0.0f ) ,
XMFLOAT3( right, top, 1.0f ), XMFLOAT2( FrameWidth * ( m_nActualFrame + 1 ), 0.0f ) ,
;
D3D11_BUFFER_DESC vdesc = ;
vdesc.Usage = D3D11_USAGE_IMMUTABLE;
vdesc.ByteWidth = sizeof( Vertex ) * ARRAYSIZE( vertices );
vdesc.BindFlags = D3D11_BIND_VERTEX_BUFFER;
D3D11_SUBRESOURCE_DATA vdata = ;
vdata.pSysMem = vertices;
HR( theDevice->CreateBuffer( &vdesc, &vdata, &m_pVertices ) );
memcpy( &tempVertex, vertices, sizeof( vertices ) );
int CSprite::Update( const float _dt )
m_fActualFrameDT -= _dt;
if( m_fActualFrameDT < 0.0f )
m_fActualFrameDT = m_fFrameDT;
int i = m_nActualFrame + 1;
if( i >= m_nFrameCount ) i = 0;
SetFrame( i );
return ERROR_SUCCESS;
void CSprite::Render()
UINT stride = sizeof( Vertex );
UINT offset = 0;
theContext->IASetVertexBuffers( 0, 1, &m_pVertices, &stride, &offset );
XMMATRIX world = GetWorldMatrix();
m_pFXWorld->SetMatrix( reinterpret_cast<float*>( &world ) );
m_pFXTexture->SetResource( m_pTextureSRV );
m_pFXTextureSampler->SetSampler( 0, m_pTextureSampler );
D3DX11_TECHNIQUE_DESC techDesc = ;
theSpriteManager->GetFXTech()->GetDesc( &techDesc );
for( UINT p = 0; p < techDesc.Passes; ++p )
theSpriteManager->GetFXTech()->GetPassByIndex( p )->Apply( 0, theContext );
theContext->Draw( 6, 0 );
【问题讨论】：
你试过调试它吗？您应该能够使用 VS 找到该行 我现在行在哪里，但我无法创建任何 DX 接口对象... 你没有碰巧修改其他东西吗？与您使用的任何版本控制系统中的工作版本进行比较。如果您不使用它，那么任何时候开始都不会太晚。 好的，我尝试了早期版本的课程，但我认为不会有任何改变...... 不，即使我的旧代码也不起作用，我几乎什么也没做，只是外包了。唯一真正改变的是 IDE 从 Visual Studio 2010 到 Visual Studio 2012。我还用 VS2012 重建了 Effects11.lib 和 Effects11d.lib 【参考方案1】：可能你得到这个异常是因为你的 m_pTextureSRV 是 NULL，试试这个：
if (m_pTextureSRV != NULL)
ID3D11Resource* pcolorTex = 00;
m_pTextureSRV->GetResource( &pcolorTex ); // put a break point here
在运行时，如果断点会停止执行将意味着我错了，但如果不是，则意味着我是对的并且你没有正确初始化 m_pTexture！
【讨论】：
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