Method CreateVertexDeclaration

trinity/Tr2InstancedMesh.cpp:501–533

-------------------------------------------------------------------------------------- Description: Creates a combined vertex declaration for base mesh and instance data. --------------------------------------------------------------------------------------

//   Creates a combined vertex declaration for base mesh and instance data.
// --------------------------------------------------------------------------------------
void Tr2InstancedMesh::CreateVertexDeclaration() const
{
	m_vertexDeclaration = Tr2EffectStateManager::UNINITIALIZED_DECLARATION;
	m_instanceDeclaration = Tr2EffectStateManager::UNINITIALIZED_DECLARATION;

	if( !Tr2Renderer::IsResourceCreationAllowed() )
	{
		return;
	}

	if( !GetInstanceGeometryResource() || !GetInstanceGeometryResource()->IsInstanceDataReady() )
	{
		return;
	}

	const unsigned declaration = GetInstanceGeometryResource()->GetInstanceBufferVertexDeclaration( m_instanceMeshIndex );
	m_instanceDeclaration = declaration;

	if( declaration == Tr2EffectStateManager::UNINITIALIZED_DECLARATION )
	{
		return;
	}
	Tr2VertexDefinition instanceVD;
	if( !Tr2EffectStateManager::GetVertexDeclarationElements( declaration, instanceVD ) )
	{
		return;
	}
	Tr2VertexDefinition meshVD;
	if( GetMeshVertexDeclaration( GetGeometryResource(), m_meshIndex, meshVD ) )
	{
		m_vertexDeclaration = MergeVertexDeclarations( meshVD, instanceVD );
	}
}

unsigned int Tr2InstancedMesh::GetVertexDeclaration() const
{