void MeshParameterization::AddVertexSoup( RENDERBUFFERALLOCATION * renderbuffer, bool onlyIndices )
{
if( renderbuffer)
{
// calculate the bbox
HRESULT hr;
Vec3 current;
int numVerts = renderbuffer->m_VertexAllocation.m_Size;
int stride = renderbuffer->m_VertexAllocation.m_Stride;
int numIndices = renderbuffer->m_IndexAllocation.m_Size;
m_CollapsedMesh->reserve( numVerts );
m_Faces->reserve( numIndices/3 );
BYTE* pVertex = NULL;
static CHashString vp3(_T("MESH_STREAM_VERTEX_POSITION3"));
int positionoffset = 0;
int uvoffset = 0;
int normalOffset = 0;
int vertexFormatSize = renderbuffer->m_VertexAllocation.VertexFormat.size();
for( int i = 0; i < vertexFormatSize; i++ )
{
ChannelDesc desc = renderbuffer->m_VertexAllocation.VertexFormat[i];
if( desc.ChannelHash == vp3.GetUniqueID() )
{
break;
}
positionoffset += renderbuffer->m_VertexAllocation.VertexFormat[ i ].Stride;
}
static CHashString tc1(_T("MESH_STREAM_VERTEX_TEXTURECOORD1"));
for( int i = 0; i < vertexFormatSize; i++ )
{
ChannelDesc desc = renderbuffer->m_VertexAllocation.VertexFormat[i];
if( desc.ChannelHash == tc1.GetUniqueID() )
{
break;
}
uvoffset += renderbuffer->m_VertexAllocation.VertexFormat[ i ].Stride;
}
static CHashString nrm(_T("MESH_STREAM_VERTEX_NORMAL"));
for( int i = 0; i < vertexFormatSize; i++ )
{
ChannelDesc desc = renderbuffer->m_VertexAllocation.VertexFormat[i];
if( desc.ChannelHash == nrm.GetUniqueID() )
{
break;
}
normalOffset += renderbuffer->m_VertexAllocation.VertexFormat[ i ].Stride;
}
if( !onlyIndices )
{
IVertexBufferObject * vb = renderbuffer->m_VertexBufferInterface;
if( !vb )return;
ParameterizationVertex curVert;
hr = vb->Lock( renderbuffer->m_VertexAllocation.m_Offset, renderbuffer->m_VertexAllocation.m_Size, (void**)&pVertex );
if( pVertex != NULL )
{
for( int i=0; i < numVerts; i++ )
{
BYTE* posbyte = pVertex;
BYTE* uvByte = pVertex;
BYTE* normalByte = pVertex;
normalByte += normalOffset;
posbyte += positionoffset;
uvByte += uvoffset;
float* curpos = (float *)posbyte;
float * curUv = (float*)uvByte;
float * normal = (float*)normalByte;
curVert.originalPosition.x = curpos[0];
curVert.originalPosition.y = curpos[1];
curVert.originalPosition.z = curpos[2];
tmin.x = min( curVert.originalPosition.x, tmin.x );
tmin.y = min( curVert.originalPosition.y, tmin.y );
tmin.z = min( curVert.originalPosition.z, tmin.z );
tmax.x = max( curVert.originalPosition.x, tmax.x );
tmax.y = max( curVert.originalPosition.y, tmax.y );
tmax.z = max( curVert.originalPosition.z, tmax.z );
curVert.generatedU = curUv[ 0 ];
curVert.generatedV = curUv[ 1 ];
curVert.originalU = curUv[ 0 ];
curVert.originalV = curUv[ 1 ];
curVert.normal.x = normal[0];
curVert.normal.y = normal[1];
curVert.normal.z = normal[2];
m_CollapsedMesh->push_back( curVert );
pVertex += renderbuffer->m_VertexBufferInterface->GetStride();
}
}
vb->Unlock();
}
//do index buffers
IIndexBuffer * ib = renderbuffer->m_IndexBufferInterface;
if( !ib )return;
TriangleFace curTri;
IMaterial * mat = renderbuffer->m_Material;
DWORD textureID = 0;
if( mat )
{
IBaseTextureObject * basetexture = mat->GetTexture(0,0);
textureID = (DWORD)basetexture;
}
hr = ib->Lock( renderbuffer->m_IndexAllocation.m_Offset, renderbuffer->m_IndexAllocation.m_Size, (void**)&pVertex );
if( pVertex != NULL )
{
for( int i=0; i < numIndices/3; i++ )
{
BYTE* posbyte = pVertex;
short * pShort = (short*)pVertex;
curTri.index[ 0 ] = pShort[0];
curTri.index[ 1 ] = pShort[1];
curTri.index[ 2 ] = pShort[2];
curTri.m_Texture = textureID;
pVertex += sizeof( short )*3;
m_Faces->push_back( curTri );
}
}
ib->Unlock();
//Add texture if not already there
ITextureObject * texture = NULL;
IMaterial * curMat = renderbuffer->m_Material;
if( curMat )
{
IBaseTextureObject * baseTexture = curMat->GetTexture(0,0);
texture = dynamic_cast< ITextureObject* >( baseTexture );
if( texture )
{
m_MaterialTextures.insert( texture );
}
}
}
}
