dxutcamera.cpp

声音和图片的加载功能,不过运行起来有点卡

    "    VS_OUTPUT Output;\r\n"
    "\r\n"
    "    // Transform the position from object space to homogeneous projection space\r\n"
    "    Output.Position = mul(vPos, g_mWorldViewProjection);\r\n"
    "\r\n"
    "    // Transform the normal from object space to world space\r\n"
    "    float3 vNormalWorldSpace;\r\n"
    "    vNormalWorldSpace = normalize(mul(vNormal, (float3x3)g_mWorld)); // normal (world space)\r\n"
    "\r\n"
    "    // Compute simple directional lighting equation\r\n"
    "    Output.Diffuse.rgb = g_MaterialDiffuseColor * max(0,dot(vNormalWorldSpace, g_LightDir));\r\n"
    "    Output.Diffuse.a = 1.0f;\r\n"
    "\r\n"
    "    return Output;\r\n"
    "}\r\n"
    "\r\n"
    "float4 RenderWith1LightNoTexturePS( float4 Diffuse : COLOR0 ) : COLOR0\r\n"
    "{\r\n"
    "    return Diffuse;\r\n"
    "}\r\n"
    "\r\n"
    "technique RenderWith1LightNoTexture\r\n"
    "{\r\n"
    "    pass P0\r\n"
    "    {\r\n"
    "        VertexShader = compile vs_2_0 RenderWith1LightNoTextureVS();\r\n"
    "        PixelShader  = compile ps_2_0 RenderWith1LightNoTexturePS();\r\n"
    "    }\r\n"
    "}\r\n"
    "";

    UINT dwBufferSize = (UINT)strlen(g_strBuffer) + 1; 

    V_RETURN( D3DXCreateEffect( s_pd3d9Device, g_strBuffer, dwBufferSize, NULL, NULL, D3DXFX_NOT_CLONEABLE, NULL, &s_pD3D9Effect, NULL ) );

    // Load the mesh with D3DX and get back a ID3DXMesh*.  For this
    // sample we'll ignore the X file's embedded materials since we know 
    // exactly the model we're loading.  See the mesh samples such as
    // "OptimizedMesh" for a more generic mesh loading example.
    V_RETURN( DXUTCreateArrowMeshFromInternalArray( s_pd3d9Device, &s_pD3D9Mesh ) );

    // Optimize the mesh for this graphics card's vertex cache 
    // so when rendering the mesh's triangle list the vertices will 
    // cache hit more often so it won't have to re-execute the vertex shader 
    // on those vertices so it will improve perf.
    DWORD* rgdwAdjacency = new DWORD[s_pD3D9Mesh->GetNumFaces() * 3];
    if( rgdwAdjacency == NULL )
        return E_OUTOFMEMORY;
    V( s_pD3D9Mesh->GenerateAdjacency(1e-6f,rgdwAdjacency) );
    V( s_pD3D9Mesh->OptimizeInplace(D3DXMESHOPT_VERTEXCACHE, rgdwAdjacency, NULL, NULL, NULL) );
    delete []rgdwAdjacency;

    return S_OK;
}


//--------------------------------------------------------------------------------------
HRESULT CDXUTDirectionWidget::OnD3D9ResetDevice( const D3DSURFACE_DESC* pBackBufferSurfaceDesc )
{
    m_ArcBall.SetWindow( pBackBufferSurfaceDesc->Width, pBackBufferSurfaceDesc->Height );
    return S_OK;
}


//--------------------------------------------------------------------------------------
void CDXUTDirectionWidget::StaticOnD3D9LostDevice()
{
    if( s_pD3D9Effect )
        s_pD3D9Effect->OnLostDevice();
}


//--------------------------------------------------------------------------------------
void CDXUTDirectionWidget::StaticOnD3D9DestroyDevice()
{
    SAFE_RELEASE(s_pD3D9Effect);
    SAFE_RELEASE(s_pD3D9Mesh);
}    


//--------------------------------------------------------------------------------------
HRESULT CDXUTDirectionWidget::StaticOnD3D10CreateDevice( ID3D10Device* pd3dDevice )
{
    s_pd3d10Device = pd3dDevice;

    const char* g_strBuffer = 
    "float4 g_MaterialDiffuseColor;      // Material's diffuse color\r\n"
    "float4 g_LightDir;                  // Light's direction in world space\r\n"
    "float4x4 g_mWorld;                  // World matrix for object\r\n"
    "float4x4 g_mWorldViewProjection;    // World * View * Projection matrix\r\n"
    "\r\n"
    "struct VS_OUTPUT\r\n"
    "{\r\n"
    "    float4 Position   : SV_POSITION;   // vertex position\r\n"
    "    float4 Diffuse    : COLOR0;     // vertex diffuse color\r\n"
    "};\r\n"
    "\r\n"
    "VS_OUTPUT RenderWith1LightNoTextureVS( float3 vPos : POSITION,\r\n"
    "                                       float3 vNormal : NORMAL )\r\n"
    "{\r\n"
    "    VS_OUTPUT Output;\r\n"
    "\r\n"
    "    // Transform the position from object space to homogeneous projection space\r\n"
    "    Output.Position = mul( float4(vPos,1), g_mWorldViewProjection);\r\n"
    "\r\n"
    "    // Transform the normal from object space to world space\r\n"
    "    float3 vNormalWorldSpace;\r\n"
    "    vNormalWorldSpace = normalize(mul(vNormal, (float3x3)g_mWorld)); // normal (world space)\r\n"
    "\r\n"
    "    // Compute simple directional lighting equation\r\n"
    "    Output.Diffuse.rgb = g_MaterialDiffuseColor * max(0,dot(vNormalWorldSpace, g_LightDir));\r\n"
    "    Output.Diffuse.a = 1.0f;\r\n"
    "\r\n"
    "    return Output;\r\n"
    "}\r\n"
    "\r\n"
    "float4 RenderWith1LightNoTexturePS( VS_OUTPUT Input ) : SV_TARGET\r\n"
    "{\r\n"
    "    return Input.Diffuse;\r\n"
    "}\r\n"
    "\r\n"
    "technique10 RenderWith1LightNoTexture\r\n"
    "{\r\n"
    "    pass p0\r\n"
    "    {\r\n"
    "       SetVertexShader( CompileShader( vs_4_0, RenderWith1LightNoTextureVS() ) );\r\n"
    "       SetGeometryShader( NULL );\r\n"
    "       SetPixelShader( CompileShader( ps_4_0, RenderWith1LightNoTexturePS() ) );\r\n"
    "    }\r\n"
    "}\r\n"
    "";

    UINT dwBufferSize = (UINT)strlen(g_strBuffer) + 1; 

    HRESULT hr = D3DX10CreateEffectFromMemory( g_strBuffer, dwBufferSize, "None", NULL, NULL, "fx_4_0", D3D10_SHADER_ENABLE_STRICTNESS, 0, pd3dDevice, NULL, NULL, &s_pD3D10Effect, NULL, NULL );
    if( FAILED(hr) )
        return hr;

    s_pRenderTech = s_pD3D10Effect->GetTechniqueByName( "RenderWith1LightNoTexture" );
    g_pMaterialDiffuseColor = s_pD3D10Effect->GetVariableByName( "g_MaterialDiffuseColor" )->AsVector();
    g_pLightDir = s_pD3D10Effect->GetVariableByName( "g_LightDir" )->AsVector();  
    g_pmWorld = s_pD3D10Effect->GetVariableByName( "g_mWorld" )->AsMatrix();  
    g_pmWorldViewProjection = s_pD3D10Effect->GetVariableByName( "g_mWorldViewProjection" )->AsMatrix();   

    const D3D10_INPUT_ELEMENT_DESC layout[] =
    {
        { "POSITION",  0, DXGI_FORMAT_R32G32B32A32_FLOAT, 0, 0,  D3D10_INPUT_PER_VERTEX_DATA, 0 },
        { "NORMAL",    0, DXGI_FORMAT_R32G32B32_FLOAT, 0, 12, D3D10_INPUT_PER_VERTEX_DATA, 0 },
    };
    D3D10_PASS_DESC PassDesc;
    V_RETURN( s_pRenderTech->GetPassByIndex( 0 )->GetDesc( &PassDesc ) );
    V_RETURN( pd3dDevice->CreateInputLayout( layout, 2, PassDesc.pIAInputSignature, PassDesc.IAInputSignatureSize, &s_pVertexLayout ) );

    //TODO:  Add loading code here

    return S_OK;
}

//--------------------------------------------------------------------------------------
HRESULT CDXUTDirectionWidget::OnRender10( D3DXCOLOR color, const D3DXMATRIX* pmView, const D3DXMATRIX* pmProj, const D3DXVECTOR3* pEyePt )
{
    m_mView = *pmView;

    // Render the light spheres so the user can visually see the light dir
    D3DXMATRIX mRotate;
    D3DXMATRIX mScale;
    D3DXMATRIX mTrans;
    D3DXMATRIXA16 mWorldViewProj;

    g_pMaterialDiffuseColor->SetFloatVector( (float*)&color );
    D3DXVECTOR3 vEyePt;
    D3DXVec3Normalize( &vEyePt, pEyePt );
    g_pLightDir->SetFloatVector( (float*)&vEyePt );

    // Rotate arrow model to point towards origin
    D3DXMATRIX mRotateA, mRotateB;
    D3DXVECTOR3 vAt = D3DXVECTOR3(0,0,0);
    D3DXVECTOR3 vUp = D3DXVECTOR3(0,1,0);
    D3DXMatrixRotationX( &mRotateB, D3DX_PI );
    D3DXMatrixLookAtLH( &mRotateA, &m_vCurrentDir, &vAt, &vUp );
    D3DXMatrixInverse( &mRotateA, NULL, &mRotateA );
    mRotate = mRotateB * mRotateA;

    D3DXVECTOR3 vL = m_vCurrentDir * m_fRadius * 1.0f;
    D3DXMatrixTranslation( &mTrans, vL.x, vL.y, vL.z );
    D3DXMatrixScaling( &mScale, m_fRadius*0.2f, m_fRadius*0.2f, m_fRadius*0.2f );

    D3DXMATRIX mWorld = mRotate * mScale * mTrans;
    mWorldViewProj = mWorld * (m_mView) * (*pmProj);

    g_pmWorldViewProjection->SetMatrix( (float*)&mWorldViewProj );
    g_pmWorld->SetMatrix( (float*)&mWorld );

    s_pd3d10Device->IASetInputLayout( s_pVertexLayout );
    
    //TODO:  Add rendering code here

    return S_OK;
}

//--------------------------------------------------------------------------------------
void CDXUTDirectionWidget::StaticOnD3D10DestroyDevice()
{
    SAFE_RELEASE(s_pVertexLayout);
    SAFE_RELEASE(s_pD3D10Effect);
}    


//--------------------------------------------------------------------------------------
LRESULT CDXUTDirectionWidget::HandleMessages( HWND hWnd, UINT uMsg, 
                                              WPARAM wParam, LPARAM lParam )
{
    switch( uMsg )
    {
        case WM_LBUTTONDOWN:
        case WM_MBUTTONDOWN:
        case WM_RBUTTONDOWN:
        {
            if( ((m_nRotateMask & MOUSE_LEFT_BUTTON) != 0 && uMsg == WM_LBUTTONDOWN) ||
                ((m_nRotateMask & MOUSE_MIDDLE_BUTTON) != 0 && uMsg == WM_MBUTTONDOWN) ||
                ((m_nRotateMask & MOUSE_RIGHT_BUTTON) != 0 && uMsg == WM_RBUTTONDOWN) )
            {
                int iMouseX = (int)(short)LOWORD(lParam);
                int iMouseY = (int)(short)HIWORD(lParam);
                m_ArcBall.OnBegin( iMouseX, iMouseY );
                SetCapture(hWnd);
            }
            return TRUE;
        }

        case WM_MOUSEMOVE:
        {
            if( m_ArcBall.IsBeingDragged() )
            {
                int iMouseX = (int)(short)LOWORD(lParam);
                int iMouseY = (int)(short)HIWORD(lParam);
                m_ArcBall.OnMove( iMouseX, iMouseY );
                UpdateLightDir();
            }
            return TRUE;
        }

        case WM_LBUTTONUP:
        case WM_MBUTTONUP:
        case WM_RBUTTONUP:
        {
            if( ((m_nRotateMask & MOUSE_LEFT_BUTTON) != 0 && uMsg == WM_LBUTTONUP) ||
                ((m_nRotateMask & MOUSE_MIDDLE_BUTTON) != 0 && uMsg == WM_MBUTTONUP) ||
                ((m_nRotateMask & MOUSE_RIGHT_BUTTON) != 0 && uMsg == WM_RBUTTONUP) )
            {
                m_ArcBall.OnEnd();
                ReleaseCapture();
            }

            UpdateLightDir();
            return TRUE;
        }

        case WM_CAPTURECHANGED:
        {
            if( (HWND)lParam != hWnd )
            {
                if( (m_nRotateMask & MOUSE_LEFT_BUTTON) ||
                    (m_nRotateMask & MOUSE_MIDDLE_BUTTON) ||
                    (m_nRotateMask & MOUSE_RIGHT_BUTTON) )
                {
                    m_ArcBall.OnEnd();
                    ReleaseCapture();
                }
            }
            return TRUE;
        }
    }

    return 0;
}


//--------------------------------------------------------------------------------------
HRESULT CDXUTDirectionWidget::OnRender9( D3DXCOLOR color, const D3DXMATRIX* pmView, 
                                         const D3DXMATRIX* pmProj, const D3DXVECTOR3* pEyePt )
{
    m_mView = *pmView;

    // Render the light spheres so the user can visually see the light dir
    UINT iPass, cPasses;
    D3DXMATRIX mRotate;
    D3DXMATRIX mScale;
    D3DXMATRIX mTrans;
    D3DXMATRIXA16 mWorldViewProj;
    HRESULT hr;

    V( s_pD3D9Effect->SetTechnique( "RenderWith1LightNoTexture" ) );
    V( s_pD3D9Effect->SetVector( "g_MaterialDiffuseColor", (D3DXVECTOR4*)&color ) );

    D3DXVECTOR3 vEyePt;
    D3DXVec3Normalize( &vEyePt, pEyePt );
    V( s_pD3D9Effect->SetValue( "g_LightDir", &vEyePt, sizeof(D3DXVECTOR3) ) );

    // Rotate arrow model to point towards origin
    D3DXMATRIX mRotateA, mRotateB;
    D3DXVECTOR3 vAt = D3DXVECTOR3(0,0,0);
    D3DXVECTOR3 vUp = D3DXVECTOR3(0,1,0);
    D3DXMatrixRotationX( &mRotateB, D3DX_PI );
    D3DXMatrixLookAtLH( &mRotateA, &m_vCurrentDir, &vAt, &vUp );
    D3DXMatrixInverse( &mRotateA, NULL, &mRotateA );
    mRotate = mRotateB * mRotateA;

    D3DXVECTOR3 vL = m_vCurrentDir * m_fRadius * 1.0f;
    D3DXMatrixTranslation( &mTrans, vL.x, vL.y, vL.z );
    D3DXMatrixScaling( &mScale, m_fRadius*0.2f, m_fRadius*0.2f, m_fRadius*0.2f );

    D3DXMATRIX mWorld = mRotate * mScale * mTrans;
    mWorldViewProj = mWorld * (m_mView) * (*pmProj);

    V( s_pD3D9Effect->SetMatrix( "g_mWorldViewProjection", &mWorldViewProj ) );
    V( s_pD3D9Effect->SetMatrix( "g_mWorld", &mWorld ) );

    for( int iSubset=0; iSubset<2; iSubset++ )
    {
        V( s_pD3D9Effect->Begin(&cPasses, 0) );
        for (iPass = 0; iPass < cPasses; iPass++)
        {
            V( s_pD3D9Effect->BeginPass(iPass) );
            V( s_pD3D9Mesh->DrawSubset(iSubset) );
            V( s_pD3D9Effect->EndPass() );
        }
        V( s_pD3D9Effect->End() );
    }

    return S_OK;
}

//--------------------------------------------------------------------------------------
HRESULT CDXUTDirectionWidget::UpdateLightDir()
{
    D3DXMATRIX mInvView;
    D3DXMatrixInverse(&mInvView, NULL, &m_mView);
    mInvView._41 = mInvView._42 = mInvView._43 = 0;

    D3DXMATRIX mLastRotInv;
    D3DXMatrixInverse(&mLastRotInv, NULL, &m_mRotSnapshot);

    D3DXMATRIX mRot = *m_ArcBall.GetRotationMatrix();
    m_mRotSnapshot = mRot;

    // Accumulate the delta of the arcball's rotation in view space.
    // Note that per-frame delta rotations could be problematic over long periods of time.
    m_mRot *= m_mView * mLastRotInv * mRot * mInvView;

    // Since we're accumulating delta rotations, we need to orthonormalize 
    // the matrix to prevent eventual matrix skew
    D3DXVECTOR3* pXBasis = (D3DXVECTOR3*) &m_mRot._11;
    D3DXVECTOR3* pYBasis = (D3DXVECTOR3*) &m_mRot._21;
    D3DXVECTOR3* pZBasis = (D3DXVECTOR3*) &m_mRot._31;
    D3DXVec3Normalize( pXBasis, pXBasis );
    D3DXVec3Cross( pYBasis, pZBasis, pXBasis );
    D3DXVec3Normalize( pYBasis, pYBasis );
    D3DXVec3Cross( pZBasis, pXBasis, pYBasis );

    // Transform the default direction vector by the light's rotation matrix
    D3DXVec3TransformNormal( &m_vCurrentDir, &m_vDefaultDir, &m_mRot );

    return S_OK;
}