/// <summary>
/// This callback function will be called immediately after the Direct3D device has
/// been destroyed, which generally happens as a result of application termination or
/// windowed/full screen toggles. Resources created in the OnCreateDevice callback
/// should be released here, which generally includes all Pool.Managed resources.
/// </summary>
private void OnDestroyDevice(object sender, EventArgs e)
{
meshTextures = null;
meshMaterials = null;
if (fullMesh != null)
{
fullMesh.Dispose();
}
if ((meshes != null) && (meshes.Length > 0))
{
for (int i = 0; i < meshes.Length; i++)
{
if (meshes[i] != null)
{
meshes[i].Dispose();
}
}
}
meshes = null;
}
private void CreateLod()
{
ProgressiveMesh pPMesh = null;
int cVerticesMin = 0;
int cVerticesMax = 0;
int cVerticesPerMesh = 0;
pPMesh = new ProgressiveMesh(m_mesh, m_adj, null, 1, MeshFlags.SimplifyVertex);
cVerticesMin = pPMesh.MinVertices;
cVerticesMax = pPMesh.MaxVertices;
if (m_pMeshes != null)
{
for (int iPMesh = 0; iPMesh < m_pMeshes.Length; iPMesh++)
{
m_pMeshes[iPMesh].Dispose();
}
}
cVerticesPerMesh = (cVerticesMax - cVerticesMin) / m_nNumLOD;
m_pMeshes = new ProgressiveMesh[m_nNumLOD];
// clone all the separate m_pMeshes
for (int iPMesh = 0; iPMesh < m_pMeshes.Length; iPMesh++)
{
m_pMeshes[m_pMeshes.Length - 1 - iPMesh] = pPMesh.Clone(MeshFlags.Managed | MeshFlags.VbShare, pPMesh.VertexFormat, CGameEngine.Device3D);
// trim to appropriate space
if (m_nNumLOD > 1)
{
m_pMeshes[m_pMeshes.Length - 1 - iPMesh].TrimByVertices(cVerticesMin + cVerticesPerMesh * iPMesh, cVerticesMin + cVerticesPerMesh * (iPMesh + 1));
}
m_pMeshes[m_pMeshes.Length - 1 - iPMesh].OptimizeBaseLevelOfDetail(MeshFlags.OptimizeVertexCache);
}
m_currentPmesh = 0;
m_pMeshes[m_currentPmesh].NumberVertices = cVerticesMax;
pPMesh.Dispose();
}
/// <summary>
/// The device has been created. Resources that are not lost on
/// Reset() can be created here -- resources in Pool.Managed,
/// Pool.Scratch, or Pool.SystemMemory. Image surfaces created via
/// CreateImageSurface are never lost and can be created here. Vertex
/// shaders and pixel shaders can also be created here as they are not
/// lost on Reset().
/// </summary>
protected override void InitializeDeviceObjects()
{
// Initialize the font's internal textures
font.InitializeDeviceObjects(device);
string path = DXUtil.FindMediaFile(initialDirectory, meshFilename);
Mesh pMesh = null;
Mesh pTempMesh = null;
GraphicsStream adj = null;
ExtendedMaterial[] mtrl = null;
MeshFlags i32BitFlag;
WeldEpsilons Epsilons = new WeldEpsilons();
ProgressiveMesh pPMesh = null;
int cVerticesMin = 0;
int cVerticesMax = 0;
int cVerticesPerMesh = 0;
try
{
// Load the mesh from the specified file
pMesh = Mesh.FromFile(path, MeshFlags.Managed, device, out adj, out mtrl);
i32BitFlag = pMesh.Options.Use32Bit ? MeshFlags.Use32Bit : 0;
// perform simple cleansing operations on mesh
pTempMesh = Mesh.Clean(pMesh, adj, adj);
pMesh.Dispose();
pMesh = pTempMesh;
// Perform a weld to try and remove excess vertices like the model bigship1.x in the DX9.0 SDK (current model is fixed)
// Weld the mesh using all epsilons of 0.0f. A small epsilon like 1e-6 works well too
pMesh.WeldVertices(0, Epsilons, adj, adj);
// verify validity of mesh for simplification
pMesh.Validate(adj);
meshMaterials = new Direct3D.Material[mtrl.Length];
meshTextures = new Texture[mtrl.Length];
for (int i = 0; i < mtrl.Length; i++)
{
meshMaterials[i] = mtrl[i].Material3D;
meshMaterials[i].Ambient = meshMaterials[i].Diffuse;
if ((mtrl[i].TextureFilename != null) && (mtrl[i].TextureFilename != ""))
{
path = DXUtil.FindMediaFile(initialDirectory, mtrl[i].TextureFilename);
// Find the path to the texture and create that texture
try
{
meshTextures[i] = TextureLoader.FromFile(device, path);
}
catch
{
meshTextures[i] = null;
}
}
}
// Lock the vertex buffer to generate a simple bounding sphere
VertexBuffer vb = pMesh.VertexBuffer;
GraphicsStream vertexData = vb.Lock(0, 0, LockFlags.NoSystemLock);
objectRadius = Geometry.ComputeBoundingSphere(vertexData, pMesh.NumberVertices, pMesh.VertexFormat, out objectCenter);
vb.Unlock();
vb.Dispose();
if (meshMaterials.Length == 0)
{
throw new Exception();
}
if ((pMesh.VertexFormat & VertexFormats.Normal) == 0)
{
pTempMesh = pMesh.Clone(i32BitFlag | MeshFlags.Managed, pMesh.VertexFormat | VertexFormats.Normal, device);
pTempMesh.ComputeNormals();
pMesh.Dispose();
pMesh = pTempMesh;
}
pPMesh = new ProgressiveMesh(pMesh, adj, null, 1, MeshFlags.SimplifyVertex);
cVerticesMin = pPMesh.MinVertices;
cVerticesMax = pPMesh.MaxVertices;
cVerticesPerMesh = (cVerticesMax - cVerticesMin) / 10;
pmeshes = new ProgressiveMesh[(int)Math.Max(1, Math.Ceiling((cVerticesMax - cVerticesMin) / (float)cVerticesPerMesh))];
// clone full size pmesh
fullPmesh = pPMesh.Clone(MeshFlags.Managed | MeshFlags.VbShare, pPMesh.VertexFormat, device);
// clone all the separate pmeshes
for (int iPMesh = 0; iPMesh < pmeshes.Length; iPMesh++)
{
pmeshes[iPMesh] = pPMesh.Clone(MeshFlags.Managed | MeshFlags.VbShare, pPMesh.VertexFormat, device);
// trim to appropriate space
pmeshes[iPMesh].TrimByVertices(cVerticesMin + cVerticesPerMesh * iPMesh, cVerticesMin + cVerticesPerMesh * (iPMesh + 1));
pmeshes[iPMesh].OptimizeBaseLevelOfDetail(MeshFlags.OptimizeVertexCache);
}
currentPmesh = pmeshes.Length - 1;
pmeshes[currentPmesh].NumberVertices = cVerticesMax;
fullPmesh.NumberVertices = cVerticesMax;
pPMesh.Dispose();
}
catch
{
// hide error so that device changes will not cause exit, shows blank screen instead
return;
}
}
