void MeshLoader_v0::ReadVertexStream(VertexBufferPtr & vb, int & stride, int count, DataStreamPtr & stream)
{
EXCEPTION_DEBUG(vb.IsNull(), "model file error.");
stream->Read(&stride, sizeof(int));
vb = VideoBufferManager::Instance()->CreateVertexBuffer(stride * count, stride);
void * data = vb->Lock(0, 0, LOCK_DISCARD);
stream->Read(data, stride * count);
vb->Unlock();
}
void SimpleObj::UpdateGeomtry()
{
int decl_flag = _DECL_POSITION;
if (m_normals.Size())
{
debug_assert(m_normals.Size() == mositions.Size(), "normal size != position size.");
decl_flag |= _DECL_NORMAL;
}
if (m_colors.Size())
{
debug_assert(m_colors.Size() == mositions.Size(), "color size != position size.");
decl_flag |= _DECL_COLOR;
}
if (m_texcoords.Size())
{
debug_assert(m_texcoords.Size() == mositions.Size(), "texcoord size != position size.");
decl_flag |= _DECL_TEXCOORD;
}
int stride = 0;
if (decl_flag != m_decl_flag)
{
VertexDeclarationPtr decl = VideoBufferManager::Instance().CreateVertexDeclaration();
decl->AddElement(0, 0, DECLTYPE_FLOAT3, DECLMETHOD_DEFAULT, DECLUSAGE_POSITION, 0);
stride += 12;
if (decl_flag & _DECL_NORMAL)
{
decl->AddElement(0, stride, DECLTYPE_FLOAT3, DECLMETHOD_DEFAULT, DECLUSAGE_NORMAL, 0);
stride += 12;
}
if (decl_flag & _DECL_COLOR)
{
decl->AddElement(0, stride, DECLTYPE_FLOAT4, DECLMETHOD_DEFAULT, DECLUSAGE_COLOR, 0);
stride += 16;
}
if (decl_flag & _DECL_TEXCOORD)
{
decl->AddElement(0, stride, DECLTYPE_FLOAT2, DECLMETHOD_DEFAULT, DECLUSAGE_TEXCOORD, 0);
stride += 8;
}
decl->EndDecl();
m_decl_flag = decl_flag;
mVertexStream.SetDeclaration(decl);
}
stride = mVertexStream.GetDeclaration()->GetStreamSize(0);
int size = stride * mositions.Size();
VertexBufferPtr buffer = mVertexStream.GetStream(0);
if (buffer.IsNull() || buffer->GetSize() < size)
{
buffer = VideoBufferManager::Instance().CreateVertexBuffer(size, USAGE_WRITEONLY, POOL_MANAGED);
}
//Update Geomtry;
Vector<Vec3>::Iterator pi;
Vector<Vec3>::Iterator pe;
Vector<Vec3>::Iterator ni;
Vector<Vec3>::Iterator ne;
Vector<Color4>::Iterator ci;
Vector<Color4>::Iterator ce;
Vector<Vec2>::Iterator ti;
Vector<Vec2>::Iterator te;
pi = mositions.Begin();
pe = mositions.End();
ni = m_normals.Begin();
ne = m_normals.End();
ci = m_colors.Begin();
ce = m_colors.End();
ti = m_texcoords.Begin();
te = m_texcoords.End();
char * verteces;
buffer->Lock(0, 0, (void**)&verteces, LOCK_DISCARD);
while (pi != pe)
{
int offset = 0;
if (m_decl_flag & _DECL_POSITION)
{
float * position = (float*)(verteces + offset);
if (pi != pe)
{
position[0] = pi->x;
position[1] = pi->y;
position[2] = pi->z;
++pi;
}
offset += sizeof(Vec3);
}
if (m_decl_flag & _DECL_NORMAL)
{
float * normal = (float*)(verteces + offset);
if (ni != ne)
{
normal[0] = ni->x;
normal[1] = ni->y;
normal[2] = ni->z;
++ni;
}
offset += sizeof(Vec3);
}
if (m_decl_flag & _DECL_COLOR)
{
float * color = (float*)(verteces + offset);
if (ci != ce)
{
color[0] = ci->r;
color[1] = ci->g;
color[2] = ci->b;
color[3] = ci->a;
++ci;
}
offset += sizeof(Color4);
}
if (m_decl_flag & _DECL_TEXCOORD)
{
float * texcoord = (float*)(verteces + offset);
if (ti != te)
{
texcoord[0] = ti->x;
texcoord[1] = ti->y;
++ti;
}
}
verteces += stride;
}
buffer->Unlock();
mVertexStream.Bind(0, buffer, stride);
mVertexStream.SetCount(mositions.Size());
//update index buffer
if (mndeces.Size())
{
debug_assert(mndeces.Size() < 65536, "Simple object index buffer is to large.");
size = sizeof(short) * mndeces.Size();
IndexBufferPtr ibuffer = mIndexStream.GetStream();
if (mIndexStream.GetCount() < mndeces.Size())
{
ibuffer = VideoBufferManager::Instance().CreateIndexBuffer(size, USAGE_WRITEONLY, POOL_MANAGED, FMT_INDEX16);
}
short * indeces;
ibuffer->Lock(0, 0, (void**)&indeces, LOCK_DISCARD);
Memcpy(indeces, &mndeces[0], size);
ibuffer->Unlock();
mIndexStream.Bind(ibuffer, 0);
}
mIndexStream.SetCount(mndeces.Size());
switch (mPrimType)
{
case PRIM_POINTLIST:
SetPrimitiveCount(mndeces.Size() ? mndeces.Size() : mositions.Size());
break;
case PRIM_LINELIST:
SetPrimitiveCount(mndeces.Size() ? mndeces.Size() / 2 : mositions.Size() / 2);
break;
case PRIM_LINESTRIP:
SetPrimitiveCount(mndeces.Size() ? mndeces.Size() - 1 : mositions.Size() - 1);
break;
case PRIM_TRIANGLELIST:
SetPrimitiveCount(mndeces.Size() ? mndeces.Size() / 3 : mositions.Size() / 3);
break;
case PRIM_TRIANGLESTRIP:
SetPrimitiveCount(mndeces.Size() ? mndeces.Size() - 2 : mositions.Size() - 2);
break;
case PRIM_TRIANGLEFAN:
SetPrimitiveCount(mndeces.Size() ? mndeces.Size() - 2 : mositions.Size() - 2);
break;
}
}