/// <summary>
/// Creates a ModelPreviewMaterial that renders as close to what the given <see cref="Unreal.Classes.MaterialInstanceConstant"/> looks like as possible.
/// </summary>
/// <param name="texcache">The texture cache to request textures from.</param>
/// <param name="mat">The material that this ModelPreviewMaterial will try to look like.</param>
public ModelPreviewMaterial(PreviewTextureCache texcache, Unreal.Classes.MaterialInstanceConstant mat)
{
Properties.Add("Name", mat.pcc.Exports[mat.index].ObjectName);
foreach (Unreal.Classes.MaterialInstanceConstant.TextureParam texparam in mat.Textures)
{
if (texparam.TexIndex != 0)
{
Textures.Add(texparam.Desc, FindTexture(texcache, mat.pcc.getEntry(texparam.TexIndex).GetFullPath, mat.pcc.FileName));
}
}
}
/// <summary>
/// Creates a TexturedPreviewMaterial that renders as close to what the given <see cref="Unreal.Classes.MaterialInstanceConstant"/> looks like as possible.
/// </summary>
/// <param name="texcache">The texture cache to request textures from.</param>
/// <param name="mat">The material that this ModelPreviewMaterial will try to look like.</param>
public TexturedPreviewMaterial(PreviewTextureCache texcache, Unreal.Classes.MaterialInstanceConstant mat, List <PreloadedTextureData> preloadedTextures = null) : base(texcache, mat, preloadedTextures)
{
var matPackage = mat.Export.Parent.FullPath.ToLower();
foreach (var textureEntry in mat.Textures)
{
var texObjectName = textureEntry.FullPath.ToLower();
if (texObjectName.StartsWith(matPackage) && texObjectName.Contains("diff"))
{
// we have found the diffuse texture!
DiffuseTextureFullName = textureEntry.FullPath;
Debug.WriteLine("Diffuse texture of new material <" + Properties["Name"] + "> is " + DiffuseTextureFullName);
return;
}
}
foreach (var textureEntry in mat.Textures)
{
var texObjectName = textureEntry.ObjectName.Name.ToLower();
if (texObjectName.Contains("diff") || texObjectName.Contains("tex"))
{
// we have found the diffuse texture!
DiffuseTextureFullName = textureEntry.FullPath;
Debug.WriteLine("Diffuse texture of new material <" + Properties["Name"] + "> is " + DiffuseTextureFullName);
return;
}
}
foreach (var texparam in mat.Textures)
{
var texObjectName = texparam.ObjectName.Name.ToLower();
if (texObjectName.Contains("detail"))
{
// I guess a detail texture is good enough if we didn't return for a diffuse texture earlier...
DiffuseTextureFullName = texparam.FullPath;
Debug.WriteLine("Diffuse (Detail) texture of new material <" + Properties["Name"] + "> is " + DiffuseTextureFullName);
return;
}
}
foreach (var texparam in mat.Textures)
{
var texObjectName = texparam.ObjectName.Name.ToLower();
if (!texObjectName.Contains("norm") && !texObjectName.Contains("opac"))
{
//Anything is better than nothing I suppose
DiffuseTextureFullName = texparam.FullPath;
Debug.WriteLine("Using first found texture (last resort) of new material <" + Properties["Name"] + "> as diffuse: " + DiffuseTextureFullName);
return;
}
}
}
/// <summary>
/// Creates a ModelPreviewMaterial that renders as close to what the given <see cref="Unreal.Classes.MaterialInstanceConstant"/> looks like as possible.
/// </summary>
/// <param name="texcache">The texture cache to request textures from.</param>
/// <param name="mat">The material that this ModelPreviewMaterial will try to look like.</param>
protected ModelPreviewMaterial(PreviewTextureCache texcache, Unreal.Classes.MaterialInstanceConstant mat, List <PreloadedTextureData> preloadedTextures = null)
{
if (mat == null)
{
return;
}
Properties.Add("Name", mat.Export.ObjectName);
foreach (var textureEntry in mat.Textures)
{
if (!Textures.ContainsKey(textureEntry.FullPath) && textureEntry.ClassName == "Texture2D") //Apparently some assets are cubemaps, we don't want these.
{
if (preloadedTextures != null)
{
var preloadedInfo = preloadedTextures.FirstOrDefault(x => x.MaterialExport == mat.Export && x.Mip.Export.ObjectName.Name == textureEntry.ObjectName.Name); //i don't like matching on object name but its export vs import here.
if (preloadedInfo != null)
{
Textures.Add(textureEntry.FullPath, texcache.LoadTexture(preloadedInfo.Mip.Export, preloadedInfo.Mip, preloadedInfo.decompressedTextureData));
}
else
{
Debug.WriteLine("Preloading error");
}
//if (textureEntry is ExportEntry texPort && preloadedMipInfo.Export != texPort) throw new Exception();
continue; //Don't further parse
}
if (textureEntry is ImportEntry import)
{
var extAsset = ModelPreview.FindExternalAsset(import, texcache.cache.Select(x => x.TextureExport).ToList());
if (extAsset != null)
{
Textures.Add(textureEntry.FullPath, texcache.LoadTexture(extAsset));
}
}
else
{
Textures.Add(textureEntry.FullPath, texcache.LoadTexture(textureEntry as ExportEntry));
}
}
}
}
/// <summary>
/// Creates a TexturedPreviewMaterial that renders as close to what the given <see cref="Unreal.Classes.MaterialInstanceConstant"/> looks like as possible.
/// </summary>
/// <param name="texcache">The texture cache to request textures from.</param>
/// <param name="mat">The material that this ModelPreviewMaterial will try to look like.</param>
public TexturedPreviewMaterial(PreviewTextureCache texcache, Unreal.Classes.MaterialInstanceConstant mat) : base(texcache, mat)
{
foreach (Unreal.Classes.MaterialInstanceConstant.TextureParam texparam in mat.Textures)
{
if (texparam.Desc.ToLower().Contains("diff") || texparam.Desc.ToLower().Contains("tex"))
{
// we have found the diffuse texture!
DiffuseTextureFullName = texparam.Desc;
//Console.WriteLine("Diffuse texture of new material <" + Properties["Name"] + "> is " + DiffuseTextureFullName);
return;
}
}
foreach (Unreal.Classes.MaterialInstanceConstant.TextureParam texparam in mat.Textures)
{
if (texparam.Desc.ToLower().Contains("detail"))
{
// I guess a detail texture is good enough if we didn't return for a diffuse texture earlier...
DiffuseTextureFullName = texparam.Desc;
//Console.WriteLine("Diffuse texture of new material <" + Properties["Name"] + "> is " + DiffuseTextureFullName);
return;
}
}
}
/// <summary>
/// Creates a preview of the given <see cref="Unreal.Classes.SkeletalMesh"/>.
/// </summary>
/// <param name="Device">The Direct3D device to use for buffer creation.</param>
/// <param name="m">The mesh to generate a preview for.</param>
/// <param name="texcache">The texture cache for loading textures.</param>
public ModelPreview(Device Device, Unreal.Classes.SkeletalMesh m, PreviewTextureCache texcache)
{
// STEP 1: MATERIALS
for (int i = 0; i < m.Materials.Count; i++)
{
Unreal.Classes.MaterialInstanceConstant mat = m.MatInsts[i];
if (mat == null && m.Materials[i] < 0)
{
// The material instance is an import!
ImportEntry matImport = m.Export.FileRef.GetImport(m.Materials[i]);
var externalAsset = FindExternalAsset(matImport, texcache.cache.Select(x => x.TextureExport).ToList());
if (externalAsset != null)
{
mat = new MaterialInstanceConstant(externalAsset);
}
}
if (mat != null)
{
ModelPreviewMaterial material;
// TODO: pick what material class best fits based on what properties the
// MaterialInstanceConstant mat has.
// For now, just use the default material.
material = new TexturedPreviewMaterial(texcache, mat);
AddMaterial(material.Properties["Name"], material);
}
}
// STEP 2: LODS
foreach (Unreal.Classes.SkeletalMesh.LODModelStruct lodmodel in m.LODModels)
{
// Vertices
List <WorldVertex> vertices = new List <WorldVertex>();
if (m.Export.Game == MEGame.ME1)
{
foreach (Unreal.Classes.SkeletalMesh.GPUSkinVertexStruct vertex in lodmodel.VertexBufferGPUSkin.Vertices)
{
vertices.Add(new WorldVertex(new Vector3(-vertex.Position.X, vertex.Position.Z, vertex.Position.Y), Vector3.Zero, new Vector2(vertex.UFullPrecision, vertex.VFullPrecision)));
}
}
else
{
foreach (Unreal.Classes.SkeletalMesh.GPUSkinVertexStruct vertex in lodmodel.VertexBufferGPUSkin.Vertices)
{
// NOTE: note the switched Y and Z coordinates. Unreal seems to think that Z is up.
vertices.Add(new WorldVertex(new Vector3(-vertex.Position.X, vertex.Position.Z, vertex.Position.Y), Vector3.Zero, new Vector2(HalfToFloat(vertex.U), HalfToFloat(vertex.V))));
}
}
// Triangles
List <Triangle> triangles = new List <Triangle>();
for (int i = 0; i < lodmodel.IndexBuffer.Indexes.Count; i += 3)
{
triangles.Add(new Triangle(lodmodel.IndexBuffer.Indexes[i], lodmodel.IndexBuffer.Indexes[i + 1], lodmodel.IndexBuffer.Indexes[i + 2]));
}
WorldMesh mesh = new WorldMesh(Device, triangles, vertices);
// Sections
List <ModelPreviewSection> sections = new List <ModelPreviewSection>();
foreach (Unreal.Classes.SkeletalMesh.SectionStruct section in lodmodel.Sections)
{
if (section.MaterialIndex < Materials.Count)
{
sections.Add(new ModelPreviewSection(Materials.Keys.ElementAt(section.MaterialIndex), (uint)section.BaseIndex, (uint)section.NumTriangles));
}
}
LODs.Add(new ModelPreviewLOD(mesh, sections));
}
}
