HRESULT LoadMesh(IDirect3DDevice9* pd3dDevice, WCHAR* strFileName, ID3DXMesh** ppMesh)
{
ID3DXMesh* pMesh = NULL;
WCHAR str[MAX_PATH];
HRESULT hr;
V_RETURN(DXUTFindDXSDKMediaFileCch(str, MAX_PATH, strFileName));
V_RETURN(D3DXLoadMeshFromX(str, D3DXMESH_MANAGED, pd3dDevice, NULL, NULL, NULL, NULL, &pMesh));
DWORD* rgdwAdjacency = NULL;
if(!(pMesh->GetFVF() & D3DFVF_NORMAL))
{
ID3DXMesh* pTempMesh;
V(pMesh->CloneMeshFVF(pMesh->GetOptions(),
pMesh->GetFVF() | D3DFVF_NORMAL,
pd3dDevice, &pTempMesh));
V(D3DXComputeNormals(pTempMesh, NULL));
SAFE_RELEASE(pMesh);
pMesh = pTempMesh;
}
rgdwAdjacency = new DWORD[pMesh->GetNumFaces() * 3];
if(rgdwAdjacency == NULL)
return E_OUTOFMEMORY;
V(pMesh->GenerateAdjacency(1e-6f, rgdwAdjacency));
V(pMesh->OptimizeInplace(D3DXMESHOPT_VERTEXCACHE, rgdwAdjacency, NULL, NULL, NULL));
delete []rgdwAdjacency;
*ppMesh = pMesh;
return S_OK;
}
//--------------------------------------------------------------------------------------
// This function loads the mesh and ensures the mesh has normals; it also optimizes the
// mesh for the graphics card's vertex cache, which improves performance by organizing
// the internal triangle list for less cache misses.
//--------------------------------------------------------------------------------------
HRESULT LoadMesh( IDirect3DDevice9* pd3dDevice, WCHAR* strFileName, ID3DXMesh** ppMesh )
{
ID3DXMesh* pMesh = NULL;
WCHAR str[MAX_PATH];
HRESULT hr;
// 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( DXUTFindDXSDKMediaFileCch( str, MAX_PATH, strFileName ) );
V_RETURN( D3DXLoadMeshFromX( str, D3DXMESH_MANAGED, pd3dDevice, NULL, NULL, NULL, NULL, &pMesh ) );
DWORD* rgdwAdjacency = NULL;
// Make sure there are normals which are required for lighting
if( !( pMesh->GetFVF() & D3DFVF_NORMAL ) )
{
ID3DXMesh* pTempMesh;
V( pMesh->CloneMeshFVF( pMesh->GetOptions(),
pMesh->GetFVF() | D3DFVF_NORMAL,
pd3dDevice, &pTempMesh ) );
V( D3DXComputeNormals( pTempMesh, NULL ) );
SAFE_RELEASE( pMesh );
pMesh = pTempMesh;
}
// 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.
rgdwAdjacency = new DWORD[pMesh->GetNumFaces() * 3];
if( rgdwAdjacency == NULL )
return E_OUTOFMEMORY;
V( pMesh->GenerateAdjacency( 1e-6f, rgdwAdjacency ) );
V( pMesh->OptimizeInplace( D3DXMESHOPT_VERTEXCACHE, rgdwAdjacency, NULL, NULL, NULL ) );
delete []rgdwAdjacency;
*ppMesh = pMesh;
return S_OK;
}
//--------------------------------------------------------------------------------------
//메쉬 불러오는 함수
//--------------------------------------------------------------------------------------
HRESULT LoadMesh( IDirect3DDevice9* pd3dDevice, WCHAR* strFileName, ID3DXMesh** ppMesh )
{
ID3DXMesh* pMesh = NULL;
WCHAR str[MAX_PATH];
HRESULT hr;
V_RETURN( DXUTFindDXSDKMediaFileCch( str, MAX_PATH, strFileName ) );
V_RETURN( D3DXLoadMeshFromX( str, D3DXMESH_MANAGED, pd3dDevice, NULL, NULL, NULL, NULL, &pMesh ) );
DWORD* rgdwAdjacency = NULL;
// mesh에 노말벡터 생성하는 코드
if( !( pMesh->GetFVF() & D3DFVF_NORMAL ) )
{
ID3DXMesh* pTempMesh;
V( pMesh->CloneMeshFVF( pMesh->GetOptions(),
pMesh->GetFVF() | D3DFVF_NORMAL,
pd3dDevice, &pTempMesh ) );
V( D3DXComputeNormals( pTempMesh, NULL ) );
SAFE_RELEASE( pMesh );
pMesh = pTempMesh;
}
//성능 향상을 도모하고자 인접 정보를 기록
//각 mesh(삼각형) 정보 테이블을 가지는 형태
//해당 정보는 pMesh가 가지고 있음
//각 mesh 정보는 인접할 수 있는 점의 최대 개수가 3개 이내임을 활용해 효율적으로 vertex 운영
rgdwAdjacency = new DWORD[pMesh->GetNumFaces() * 3];
if( rgdwAdjacency == NULL )
return E_OUTOFMEMORY;
V( pMesh->GenerateAdjacency( 1e-6f, rgdwAdjacency ) );
//버텍스 캐쉬를 활용하는 것
V( pMesh->OptimizeInplace( D3DXMESHOPT_VERTEXCACHE, rgdwAdjacency, NULL, NULL, NULL ) );
delete []rgdwAdjacency;
//callback out 변수에 최종 값 저장
*ppMesh = pMesh;
return S_OK;
}
void Terrain::buildSubGridMesh(RECT& R, VertexPNT* gridVerts)
{
//===============================================================
// Create the subgrid mesh.
ID3DXMesh* subMesh = 0;
D3DVERTEXELEMENT9 elems[MAX_FVF_DECL_SIZE];
UINT numElems = 0;
HR(VertexPNT::Decl->GetDeclaration(elems, &numElems));
HR(D3DXCreateMesh(SubGrid::NUM_TRIS, SubGrid::NUM_VERTS,
D3DXMESH_MANAGED, elems, gd3dDevice, &subMesh));
//===============================================================
// Build Vertex Buffer. Copy rectangle of vertices from the
// grid into the subgrid structure.
VertexPNT* v = 0;
HR(subMesh->LockVertexBuffer(0, (void**)&v));
int k = 0;
for(int i = R.top; i <= R.bottom; ++i)
{
for(int j = R.left; j <= R.right; ++j)
{
v[k++] = gridVerts[i*mVertCols+j];
}
}
//===============================================================
// Compute the bounding box before unlocking the vertex buffer.
AABB bndBox;
HR(D3DXComputeBoundingBox((D3DXVECTOR3*)v, subMesh->GetNumVertices(),
sizeof(VertexPNT), &bndBox.minPt, &bndBox.maxPt));
HR(subMesh->UnlockVertexBuffer());
//===============================================================
// Build Index and Attribute Buffer.
// Get indices for subgrid (we don't use the verts here--the verts
// are given by the parameter gridVerts).
std::vector<D3DXVECTOR3> tempVerts;
std::vector<DWORD> tempIndices;
GenTriGrid(SubGrid::NUM_ROWS, SubGrid::NUM_COLS, mDX, mDZ,
D3DXVECTOR3(0.0f, 0.0f, 0.0f), tempVerts, tempIndices);
WORD* indices = 0;
DWORD* attBuff = 0;
HR(subMesh->LockIndexBuffer(0, (void**)&indices));
HR(subMesh->LockAttributeBuffer(0, &attBuff));
for(int i = 0; i < SubGrid::NUM_TRIS; ++i)
{
indices[i*3+0] = (WORD)tempIndices[i*3+0];
indices[i*3+1] = (WORD)tempIndices[i*3+1];
indices[i*3+2] = (WORD)tempIndices[i*3+2];
attBuff[i] = 0; // All in subset 0.
}
HR(subMesh->UnlockIndexBuffer());
HR(subMesh->UnlockAttributeBuffer());
//===============================================================
// Optimize for the vertex cache and build attribute table.
DWORD* adj = new DWORD[subMesh->GetNumFaces()*3];
HR(subMesh->GenerateAdjacency(EPSILON, adj));
HR(subMesh->OptimizeInplace(D3DXMESHOPT_VERTEXCACHE|D3DXMESHOPT_ATTRSORT,
adj, 0, 0, 0));
delete[] adj;
//===============================================================
// Save the mesh and bounding box.
mSubGridMeshes.push_back(subMesh);
mSubGridBndBoxes.push_back(bndBox);
}
void CMeshConverter::OptimiseGraphicsObject(void)
{
int i;
int j;
ID3DXMesh* pXMesh;
CGraphicsPrimitive* pcPrimitive;
CVertexBufferExtended* psVertexBuffer;
void* pvDestIndexBuffer;
void* pvDestVertexBuffer;
void* pvSrcIndexBuffer;
void* pvSrcVertexBuffer;
int iVertSize;
DWORD* pvAdjacency;
int iPrimitiveStart;
int iOldVertSize;
int iNumIndices;
int iOldVertexBufferIndex;
int iNumTriangles;
void* pvDestBaseIndexBuffer;
SIndexBuffer* psIndexBuffer;
DWORD iMeshOptions;
mpcGraphicsObject->SortPrimitives();
mpcGraphicsObject->Lock();
psIndexBuffer = mpcGraphicsObject->GetIndexBuffer();
iVertSize = 0;
iNumIndices = 0;
iOldVertexBufferIndex = 0;
iNumTriangles = 0;
iOldVertSize = 0;
iMeshOptions = D3DXMESH_SYSTEMMEM;
SetFlag((int*)&iMeshOptions, D3DXMESH_32BIT, psIndexBuffer->iIndexSize == 4);
for (i = 0; i < mpcGraphicsObject->GetNumPrimitives(); i++)
{
pcPrimitive = mpcGraphicsObject->GetPrimitive(i);
psVertexBuffer = mpcGraphicsObject->GetVertexBufferForIndex(pcPrimitive->miVertexBufferIndex);
if (iOldVertSize != psVertexBuffer->iVertexSize)
{
if (iNumIndices != 0)
{
gcD3D.CreateMesh(iNumTriangles, iNumIndices, iMeshOptions, psVertexBuffer->iVertexFormat, &pXMesh);
iVertSize = pXMesh->GetNumBytesPerVertex();
pXMesh->LockIndexBuffer(D3DLOCK_NO_DIRTY_UPDATE, &pvDestBaseIndexBuffer);
pXMesh->LockVertexBuffer(D3DLOCK_NO_DIRTY_UPDATE, &pvDestVertexBuffer);
psVertexBuffer = mpcGraphicsObject->GetVertexBufferForIndex(iOldVertexBufferIndex);
pvSrcVertexBuffer = psVertexBuffer->pvLockedBuffer;
if (iVertSize != psVertexBuffer->iVertexSize)
{
gcLogger.Error("D3DX vertex size differs from expected size");
break;
}
memcpy(pvDestVertexBuffer, pvSrcVertexBuffer, psVertexBuffer->iVertexSize * psVertexBuffer->iNumVerticies);
pvDestIndexBuffer = pvDestBaseIndexBuffer;
for (j = iPrimitiveStart; j < i; j++)
{
pcPrimitive = mpcGraphicsObject->GetPrimitive(j);
pvSrcIndexBuffer = RemapSinglePointer(psIndexBuffer->pvLockedBuffer, 2 * pcPrimitive->miStartIndex);
memcpy(pvDestIndexBuffer, pvSrcIndexBuffer, psIndexBuffer->iIndexSize * pcPrimitive->miNumVertices);
pvDestIndexBuffer = RemapSinglePointer(pvDestIndexBuffer, pcPrimitive->miNumVertices);
}
pvAdjacency = (DWORD*)malloc(pcPrimitive->miNumPrimitives * 3 * sizeof(DWORD));
pXMesh->GenerateAdjacency(0.0f, pvAdjacency);
pXMesh->OptimizeInplace(D3DXMESHOPT_VERTEXCACHE | D3DXMESHOPT_DONOTSPLIT, pvAdjacency, NULL, NULL, NULL);
free(pvAdjacency);
pvDestIndexBuffer = pvDestBaseIndexBuffer;
for (j = iPrimitiveStart; j < i; j++)
{
pcPrimitive = mpcGraphicsObject->GetPrimitive(j);
pvSrcIndexBuffer = RemapSinglePointer(psIndexBuffer->pvLockedBuffer, 2 * pcPrimitive->miStartIndex);
memcpy(pvSrcIndexBuffer, pvDestIndexBuffer, psIndexBuffer->iIndexSize * pcPrimitive->miNumVertices);
pvDestIndexBuffer = RemapSinglePointer(pvDestIndexBuffer, pcPrimitive->miNumVertices);
}
memcpy(pvSrcVertexBuffer, pvDestVertexBuffer, psVertexBuffer->iVertexSize * psVertexBuffer->iNumVerticies);
pXMesh->UnlockIndexBuffer();
pXMesh->UnlockVertexBuffer();
pXMesh->Release();
}
iPrimitiveStart = i;
iNumIndices = 0;
iOldVertexBufferIndex = pcPrimitive->miVertexBufferIndex;
}
else
{
iNumIndices += pcPrimitive->miNumVertices;
iNumTriangles += pcPrimitive->miNumPrimitives;
if (iOldVertexBufferIndex != pcPrimitive->miVertexBufferIndex)
{
gcUserError.Set("Primitive vertex buffer index is F****D!");
break;
}
}
}
mpcGraphicsObject->Unlock();
}
//--------------------------------------------------------------------------------------
HRESULT CMeshLoader::Create( IDirect3DDevice9* pd3dDevice, const WCHAR* strFilename )
{
HRESULT hr;
WCHAR str[ MAX_PATH ] = {0};
// Start clean
Destroy();
// Store the device pointer
m_pd3dDevice = pd3dDevice;
// Load the vertex buffer, index buffer, and subset information from a file. In this case,
// an .obj file was chosen for simplicity, but it's meant to illustrate that ID3DXMesh objects
// can be filled from any mesh file format once the necessary data is extracted from file.
//V_RETURN( LoadGeometryFromOBJ( strFilename ) );
V_RETURN( LoadGeometryFromOBJ_Fast( strFilename ) );
// Set the current directory based on where the mesh was found
WCHAR wstrOldDir[MAX_PATH] = {0};
GetCurrentDirectory( MAX_PATH, wstrOldDir );
SetCurrentDirectory( m_strMediaDir );
// Load material textures
for( int iMaterial = 0; iMaterial < m_Materials.GetSize(); iMaterial++ )
{
Material* pMaterial = m_Materials.GetAt( iMaterial );
if( pMaterial->strTexture[0] )
{
// Avoid loading the same texture twice
bool bFound = false;
for( int x = 0; x < iMaterial; x++ )
{
Material* pCur = m_Materials.GetAt( x );
if( 0 == wcscmp( pCur->strTexture, pMaterial->strTexture ) )
{
bFound = true;
pMaterial->pTexture = pCur->pTexture;
break;
}
}
// Not found, load the texture
if( !bFound )
{
V_RETURN( DXUTFindDXSDKMediaFileCch( str, MAX_PATH, pMaterial->strTexture ) );
V_RETURN( D3DXCreateTextureFromFile( pd3dDevice, pMaterial->strTexture,
&( pMaterial->pTexture ) ) );
int a = 0;
}
}
}
// Restore the original current directory
SetCurrentDirectory( wstrOldDir );
// Create the encapsulated mesh
ID3DXMesh* pMesh = NULL;
V_RETURN( D3DXCreateMesh( m_Indices.GetSize() / 3, m_Vertices.GetSize(),
D3DXMESH_MANAGED | D3DXMESH_32BIT, VERTEX_DECL,
pd3dDevice, &pMesh ) );
// Copy the vertex data
VERTEX* pVertex;
V_RETURN( pMesh->LockVertexBuffer( 0, ( void** )&pVertex ) );
memcpy( pVertex, m_Vertices.GetData(), m_Vertices.GetSize() * sizeof( VERTEX ) );
pMesh->UnlockVertexBuffer();
m_Vertices.RemoveAll();
// Copy the index data
DWORD* pIndex;
V_RETURN( pMesh->LockIndexBuffer( 0, ( void** )&pIndex ) );
memcpy( pIndex, m_Indices.GetData(), m_Indices.GetSize() * sizeof( DWORD ) );
pMesh->UnlockIndexBuffer();
m_Indices.RemoveAll();
// Copy the attribute data
DWORD* pSubset;
V_RETURN( pMesh->LockAttributeBuffer( 0, &pSubset ) );
memcpy( pSubset, m_Attributes.GetData(), m_Attributes.GetSize() * sizeof( DWORD ) );
pMesh->UnlockAttributeBuffer();
m_Attributes.RemoveAll();
// Reorder the vertices according to subset and optimize the mesh for this graphics
// card's vertex cache. 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.
DWORD* aAdjacency = new DWORD[pMesh->GetNumFaces() * 3];
if( aAdjacency == NULL )
return E_OUTOFMEMORY;
V( pMesh->GenerateAdjacency( 1e-6f, aAdjacency ) );
V( pMesh->OptimizeInplace( D3DXMESHOPT_ATTRSORT | D3DXMESHOPT_VERTEXCACHE, aAdjacency, NULL, NULL, NULL ) );
SAFE_DELETE_ARRAY( aAdjacency );
m_pMesh = pMesh;
return S_OK;
}
void PropsDemo::buildGrass()
{
D3DVERTEXELEMENT9 elems[MAX_FVF_DECL_SIZE];
UINT numElems = 0;
HR(GrassVertex::Decl->GetDeclaration(elems, &numElems));
HR(D3DXCreateMesh(NUM_GRASS_BLOCKS*2, NUM_GRASS_BLOCKS*4, D3DXMESH_MANAGED,
elems, gd3dDevice, &mGrassMesh));
GrassVertex* v = 0;
WORD* k = 0;
HR(mGrassMesh->LockVertexBuffer(0, (void**)&v));
HR(mGrassMesh->LockIndexBuffer(0, (void**)&k));
int indexOffset = 0;
// Scale down the region in which we generate grass.
int w = (int)(mTerrain->getWidth() * 0.15f);
int d = (int)(mTerrain->getDepth() * 0.15f);
// Randomly generate a grass block (three intersecting quads) around the
// terrain in the height range [35, 50] (similar to the trees).
for(int i = 0; i < NUM_GRASS_BLOCKS; ++i)
{
//============================================
// Construct vertices.
// Generate random position in region. Note that we also shift
// this region to place it in the world.
float x = (float)((rand() % w) - (w*0.5f)) - 30.0f;
float z = (float)((rand() % d) - (d*0.5f)) - 20.0f;
float y = mTerrain->getHeight(x, z);
// Only generate grass blocks in this height range. If the height
// is outside this range, generate a new random position and
// try again.
if(y < 37.0f || y > 40.0f)
{
--i; // We are trying again, so decrement back the index.
continue;
}
float sx = GetRandomFloat(0.75f, 1.25f);
float sy = GetRandomFloat(0.75f, 1.25f);
float sz = GetRandomFloat(0.75f, 1.25f);
D3DXVECTOR3 pos(x, y, z);
D3DXVECTOR3 scale(sx, sy, sz);
buildGrassFin(v, k, indexOffset, pos, scale);
v += 4;
k += 6;
}
HR(mGrassMesh->UnlockVertexBuffer());
HR(mGrassMesh->UnlockIndexBuffer());
// Fill in the attribute buffer (everything in subset 0)
DWORD* attributeBufferPtr = 0;
HR(mGrassMesh->LockAttributeBuffer(0, &attributeBufferPtr));
for(UINT i = 0; i < mGrassMesh->GetNumFaces(); ++i)
attributeBufferPtr[i] = 0;
HR(mGrassMesh->UnlockAttributeBuffer());
DWORD* adj = new DWORD[mGrassMesh->GetNumFaces()*3];
HR(mGrassMesh->GenerateAdjacency(EPSILON, adj));
HR(mGrassMesh->OptimizeInplace(D3DXMESHOPT_ATTRSORT|D3DXMESHOPT_VERTEXCACHE,
adj, 0, 0, 0));
delete [] adj;
}
