📄 allocatehierarchy.cpp
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//=============================================================================
//Desc: AllocateHierarchy.cpp
//=============================================================================
#include "dxstdafx.h"
#include "AllocateHierarchy.h"
#pragma warning(disable: 4995)
//-----------------------------------------------------------------------------
// Desc:
//-----------------------------------------------------------------------------
HRESULT CAllocateHierarchy::AllocateName( LPCSTR Name, LPSTR *pNewName )
{
UINT cbLength;
if( Name != NULL )
{
cbLength = (UINT)strlen(Name) + 1;
*pNewName = new CHAR[cbLength];
if (*pNewName == NULL)
return E_OUTOFMEMORY;
memcpy( *pNewName, Name, cbLength*sizeof(CHAR) );
}
else
{
*pNewName = NULL;
}
return S_OK;
}
//-----------------------------------------------------------------------------
// Desc: 从绝对路径中提取文件名
//-----------------------------------------------------------------------------
void CAllocateHierarchy::RemovePathFromFileName(LPSTR fullPath, LPWSTR fileName)
{
//先将fullPath的类型变换为LPWSTR
WCHAR wszBuf[MAX_PATH];
MultiByteToWideChar( CP_ACP, 0, fullPath, -1, wszBuf, MAX_PATH );
wszBuf[MAX_PATH-1] = L'\0';
WCHAR* wszFullPath = wszBuf;
//从绝对路径中提取文件名
LPWSTR pch=wcsrchr(wszFullPath,'\\');
if (pch)
lstrcpy(fileName, ++pch);
else
lstrcpy(fileName, wszFullPath);
}
//-----------------------------------------------------------------------------
//Desc: 生成蒙皮网格模型(含有每个顶点的混合权重、索引和一个骨骼组合表)
//-----------------------------------------------------------------------------
HRESULT CAllocateHierarchy::GenerateSkinnedMesh(D3DXMESHCONTAINER_DERIVED *pMeshContainer)
{
HRESULT hr = S_OK;
if (pMeshContainer->pSkinInfo == NULL)
return hr;
SAFE_RELEASE( pMeshContainer->MeshData.pMesh );
SAFE_RELEASE( pMeshContainer->pBoneCombinationBuf );
//获取网格模型索引缓冲区
LPDIRECT3DINDEXBUFFER9 pIB;
if (FAILED(hr = pMeshContainer->pOrigMesh->GetIndexBuffer(&pIB)))
return E_FAIL;
//获取影响一个面(三角形)的矩阵数量
DWORD NumMaxFaceInfl;
hr = pMeshContainer->pSkinInfo->GetMaxFaceInfluences(pIB, pMeshContainer->pOrigMesh->GetNumFaces(), &NumMaxFaceInfl);
pIB->Release();
if (FAILED(hr))
return E_FAIL;
//影响一个面的矩阵数量不会超过12
NumMaxFaceInfl = min(NumMaxFaceInfl, 12);
//获取当前设备的能力
IDirect3DDevice9* pd3dDevice = DXUTGetD3DDevice();
D3DCAPS9 d3dCaps;
pd3dDevice->GetDeviceCaps( &d3dCaps );
//根据当前设备能力和NumMaxFaceInfl, 设置在进行骨骼蒙皮调色时使用骨骼数量的上限
if( (d3dCaps.MaxVertexBlendMatrixIndex+1)/2 < NumMaxFaceInfl )
{
pMeshContainer->NumPaletteEntries = min(256, pMeshContainer->pSkinInfo->GetNumBones());
pMeshContainer->UseSoftwareVP = true;
}
else
{
pMeshContainer->NumPaletteEntries = min( (d3dCaps.MaxVertexBlendMatrixIndex+1) / 2,
pMeshContainer->pSkinInfo->GetNumBones() );
pMeshContainer->UseSoftwareVP = false;
}
//生成蒙皮网格模型
hr = pMeshContainer->pSkinInfo->ConvertToIndexedBlendedMesh
( pMeshContainer->pOrigMesh,
0,
pMeshContainer->NumPaletteEntries,
pMeshContainer->pAdjacency,
NULL, NULL, NULL,
&pMeshContainer->NumInfl,
&pMeshContainer->NumAttributeGroups,
&pMeshContainer->pBoneCombinationBuf,
&pMeshContainer->MeshData.pMesh);
return hr;
}
//-----------------------------------------------------------------------------
// Desc: 创建框架, 仅仅是分配内存和初始化,还没有对其成员赋予合适的值
//-----------------------------------------------------------------------------
HRESULT CAllocateHierarchy::CreateFrame(LPCSTR Name, LPD3DXFRAME *ppNewFrame)
{
HRESULT hr = S_OK;
D3DXFRAME_DERIVED *pFrame;
*ppNewFrame = NULL;
pFrame = new D3DXFRAME_DERIVED; //创建框架结构对象
if (pFrame == NULL)
{
return E_OUTOFMEMORY;
}
//为框架指定名称
hr = AllocateName(Name, (LPSTR*)&pFrame->Name);
if (FAILED(hr))
{
delete pFrame;
return hr;
}
//初始化D3DXFRAME_DERIVED结构其它成员变量
D3DXMatrixIdentity(&pFrame->TransformationMatrix);
D3DXMatrixIdentity(&pFrame->CombinedTransformationMatrix);
pFrame->pMeshContainer = NULL;
pFrame->pFrameSibling = NULL;
pFrame->pFrameFirstChild = NULL;
*ppNewFrame = pFrame;
pFrame = NULL;
return hr;
}
//-----------------------------------------------------------------------------
// Desc: 在这里是调用了成员函数 GenerateSkinnedMesh(pMeshContainer);
// 是在这里加载了蒙皮信息
//-----------------------------------------------------------------------------
HRESULT CAllocateHierarchy::CreateMeshContainer(LPCSTR Name,
CONST D3DXMESHDATA *pMeshData,
CONST D3DXMATERIAL *pMaterials,
CONST D3DXEFFECTINSTANCE *pEffectInstances,
DWORD NumMaterials,
CONST DWORD *pAdjacency,
LPD3DXSKININFO pSkinInfo,
LPD3DXMESHCONTAINER *ppNewMeshContainer)
{
HRESULT hr;
D3DXMESHCONTAINER_DERIVED *pMeshContainer = NULL;
UINT NumFaces; //网格中的面数,在填充网格容器结构的邻接信息成员时使用
UINT iMaterial; //纹理操作时的循环变量
UINT cBones; //当前网格模型骨骼总数
LPDIRECT3DDEVICE9 pd3dDevice = NULL;
LPD3DXMESH pMesh = NULL;
*ppNewMeshContainer = NULL;
if (pMeshData->Type != D3DXMESHTYPE_MESH)
{
return E_FAIL;
}
pMesh = pMeshData->pMesh;
if (pMesh->GetFVF() == 0)
{
return E_FAIL;
}
//为网格容器分配内存
pMeshContainer = new D3DXMESHCONTAINER_DERIVED;
if (pMeshContainer == NULL)
{
return E_OUTOFMEMORY;
}
memset(pMeshContainer, 0, sizeof(D3DXMESHCONTAINER_DERIVED));
//填充网格容器结构D3DXMESHCONTAINER_DERIVED的成员
//为网格指定名称
hr = AllocateName(Name, &pMeshContainer->Name);
if (FAILED(hr))
{
DestroyMeshContainer(pMeshContainer);
return hr;
}
pMesh->GetDevice(&pd3dDevice);
NumFaces = pMesh->GetNumFaces();
//确保网格顶点包含法线
if (!(pMesh->GetFVF() & D3DFVF_NORMAL))
{
pMeshContainer->MeshData.Type = D3DXMESHTYPE_MESH;
hr = pMesh->CloneMeshFVF( pMesh->GetOptions(),
pMesh->GetFVF() | D3DFVF_NORMAL,
pd3dDevice,
&pMeshContainer->MeshData.pMesh );
if (FAILED(hr))
{
SAFE_RELEASE(pd3dDevice);
DestroyMeshContainer(pMeshContainer);
return hr;
}
pMesh = pMeshContainer->MeshData.pMesh;
D3DXComputeNormals( pMesh, NULL );
}
else
{
pMeshContainer->MeshData.pMesh = pMesh;
pMeshContainer->MeshData.Type = D3DXMESHTYPE_MESH;
pMesh->AddRef();
}
//为网格模型准备材质和纹理
pMeshContainer->NumMaterials = max(1, NumMaterials);
pMeshContainer->pMaterials = new D3DXMATERIAL[pMeshContainer->NumMaterials];
pMeshContainer->ppTextures = new LPDIRECT3DTEXTURE9[pMeshContainer->NumMaterials];
pMeshContainer->pAdjacency = new DWORD[NumFaces*3];
if ((pMeshContainer->pAdjacency == NULL) || (pMeshContainer->pMaterials == NULL)
|| (pMeshContainer->ppTextures == NULL))
{
hr = E_OUTOFMEMORY;
SAFE_RELEASE(pd3dDevice);
DestroyMeshContainer(pMeshContainer);
return hr;
}
memcpy(pMeshContainer->pAdjacency, pAdjacency, sizeof(DWORD) * NumFaces*3);
memset(pMeshContainer->ppTextures, 0, sizeof(LPDIRECT3DTEXTURE9) * pMeshContainer->NumMaterials);
if (NumMaterials > 0)
{
//复制材质属性, 设置材质环境光属性
memcpy(pMeshContainer->pMaterials, pMaterials, sizeof(D3DXMATERIAL) * NumMaterials);
pMeshContainer->pMaterials->MatD3D.Ambient = pMeshContainer->pMaterials->MatD3D.Diffuse;
//提取纹理文件, 创建纹理对象
for (iMaterial = 0; iMaterial < NumMaterials; iMaterial++)
{
if (pMeshContainer->pMaterials[iMaterial].pTextureFilename != NULL)
{
WCHAR strTexturePath[MAX_PATH];
WCHAR wszBuf[MAX_PATH];
//从纹理文件路径提取纹理文件名
RemovePathFromFileName(pMeshContainer->pMaterials[iMaterial].pTextureFilename, wszBuf);
//根据纹理文件名从事先指定的路径查找纹理文件
DXUTFindDXSDKMediaFileCch( strTexturePath, MAX_PATH, wszBuf );
if( FAILED( D3DXCreateTextureFromFile( pd3dDevice, strTexturePath,
&pMeshContainer->ppTextures[iMaterial] ) ) )
pMeshContainer->ppTextures[iMaterial] = NULL;
pMeshContainer->pMaterials[iMaterial].pTextureFilename = NULL;
}
}
}
else
{
pMeshContainer->pMaterials[0].pTextureFilename = NULL;
memset(&pMeshContainer->pMaterials[0].MatD3D, 0, sizeof(D3DMATERIAL9));
pMeshContainer->pMaterials[0].MatD3D.Diffuse.r = 0.5f;
pMeshContainer->pMaterials[0].MatD3D.Diffuse.g = 0.5f;
pMeshContainer->pMaterials[0].MatD3D.Diffuse.b = 0.5f;
pMeshContainer->pMaterials[0].MatD3D.Specular = pMeshContainer->pMaterials[0].MatD3D.Diffuse;
}
SAFE_RELEASE(pd3dDevice);
//如果当前网格包含蒙皮信息
if (pSkinInfo != NULL)
{
//加载蒙皮网格信息
pMeshContainer->pSkinInfo = pSkinInfo;
pSkinInfo->AddRef();
//保留原网格信息
pMeshContainer->pOrigMesh = pMesh;
pMesh->AddRef();
//获取骨骼数量
cBones = pSkinInfo->GetNumBones();
//为每块骨骼分配保存初始变换矩阵的内存空间
pMeshContainer->pBoneOffsetMatrices = new D3DXMATRIX[cBones];
if (pMeshContainer->pBoneOffsetMatrices == NULL)
{
hr = E_OUTOFMEMORY;
DestroyMeshContainer(pMeshContainer);
return hr;
}
//保存每块骨骼的初始变换矩阵
for (UINT iBone = 0; iBone < cBones; iBone++)
{
pMeshContainer->pBoneOffsetMatrices[iBone] = *(pMeshContainer->pSkinInfo->GetBoneOffsetMatrix(iBone));
}
//生成蒙皮网格模型
hr = GenerateSkinnedMesh(pMeshContainer);
if (FAILED(hr))
{
DestroyMeshContainer(pMeshContainer);
return hr;
}
}
*ppNewMeshContainer = pMeshContainer;
pMeshContainer = NULL;
return hr;
}
//-----------------------------------------------------------------------------
// Desc: 释放框架
//-----------------------------------------------------------------------------
HRESULT CAllocateHierarchy::DestroyFrame(LPD3DXFRAME pFrameToFree)
{
if(pFrameToFree != NULL)
{
SAFE_DELETE_ARRAY( pFrameToFree->Name );
SAFE_DELETE( pFrameToFree );
}
return S_OK;
}
//-----------------------------------------------------------------------------
// Desc: 释放网格容器
//-----------------------------------------------------------------------------
HRESULT CAllocateHierarchy::DestroyMeshContainer(LPD3DXMESHCONTAINER pMeshContainerBase)
{
if(pMeshContainerBase == NULL)
return S_OK;
UINT iMaterial;
// 先转为扩展型以免内存泄漏
D3DXMESHCONTAINER_DERIVED *pMeshContainer = (D3DXMESHCONTAINER_DERIVED*)pMeshContainerBase;
SAFE_DELETE_ARRAY( pMeshContainer->Name );
SAFE_DELETE_ARRAY( pMeshContainer->pAdjacency );
SAFE_DELETE_ARRAY( pMeshContainer->pMaterials );
SAFE_DELETE_ARRAY( pMeshContainer->pBoneOffsetMatrices );
if (pMeshContainer->ppTextures != NULL)
{
for (iMaterial = 0; iMaterial < pMeshContainer->NumMaterials; iMaterial++)
{
SAFE_RELEASE( pMeshContainer->ppTextures[iMaterial] );
}
}
SAFE_DELETE_ARRAY( pMeshContainer->ppTextures );
SAFE_DELETE_ARRAY( pMeshContainer->ppBoneMatrixPtrs );
SAFE_RELEASE( pMeshContainer->pBoneCombinationBuf );
SAFE_RELEASE( pMeshContainer->MeshData.pMesh );
SAFE_RELEASE( pMeshContainer->pSkinInfo );
SAFE_RELEASE( pMeshContainer->pOrigMesh );
SAFE_DELETE( pMeshContainer );
return S_OK;
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