private void ProcessLoadRequest(SAssetLoadRequest loadRequest)
{
Scene scene = m_importer.ImportFile(loadRequest.filename, PostProcessPreset.TargetRealTimeMaximumQuality | PostProcessPreset.ConvertToLeftHanded);
if (loadRequest.type == EAssetType.Mesh)
{
if (scene.HasMeshes)
{
CMeshAsset meshAsset = (CMeshAsset)loadRequest.targetAsset;
CMeshLoadingJob loadingJob = new CMeshLoadingJob(scene, Path.GetDirectoryName(loadRequest.filename));
LoadMeshInternal(0, meshAsset, loadingJob, loadRequest.assetPath, Path.GetFileNameWithoutExtension(loadRequest.filename));
}
}
else if (loadRequest.type == EAssetType.Model)
{
if (scene.HasMeshes)
{
CModelAsset modelAsset = (CModelAsset)loadRequest.targetAsset;
LoadModelInternal(loadRequest.filename, scene, modelAsset, loadRequest.assetPath);
modelAsset.Name = Path.GetFileNameWithoutExtension(loadRequest.filename);
if (CAssetRegistry.Instance.RequestRegisterAsset(modelAsset, loadRequest.assetPath + "Models/", out CModelAsset existingAsset))
{
existingAsset.WaitUntilLoaded();
modelAsset.CopyFrom(existingAsset);
}
}
}
AssetLoadedCallback(loadRequest);
}
private void AddMeshes(Node node, CModelAsset asset, string assetPath, CMeshLoadingJob loadingJob, ref Matrix transform)
{
Matrix previousTransform = transform;
transform = Matrix.Multiply(previousTransform, FromAssimpMatrix(node.Transform));
if (node.HasMeshes)
{
foreach (int meshIndex in node.MeshIndices)
{
CMeshAsset meshAsset = new CMeshAsset();
// We always import all meshes in a file so we use always import here
LoadMeshInternal(meshIndex, meshAsset, loadingJob, assetPath, null, true);
meshAsset.LoadFinished();
SMeshChild modelChild = new SMeshChild()
{
meshAsset = meshAsset,
relativeTransform = transform
};
asset.MeshChildren.Add(modelChild);
}
}
for (int i = 0; i < node.ChildCount; i++)
{
AddMeshes(node.Children[i], asset, assetPath, loadingJob, ref transform);
}
transform = previousTransform;
}
public CMeshAsset LoadMeshAsset(string filename, bool bAlwaysImport = false)
{
// Block new loads and wait for our current load to finish
m_bIsLoading = true;
m_currentLoadTask?.Wait();
// Load the asset synchronous
CMeshAsset outAsset = new CMeshAsset();
if (!bAlwaysImport && TryGetExistingAsset(filename, "Assets/", outAsset, out CMeshAsset existingAsset))
{
m_bIsLoading = false;
return(existingAsset);
}
Scene scene = m_importer.ImportFile(filename, PostProcessPreset.TargetRealTimeMaximumQuality | PostProcessPreset.ConvertToLeftHanded);
if (scene.HasMeshes)
{
string basePath = Path.GetDirectoryName(filename);
CMeshLoadingJob loadingJob = new CMeshLoadingJob(scene, basePath);
LoadMeshInternal(0, outAsset, loadingJob, "Assets/", Path.GetFileNameWithoutExtension(filename), bAlwaysImport);
}
outAsset.LoadFinished();
// Unblock loader
m_bIsLoading = false;
// Continue loading request
StartNextLoadRequest();
return(outAsset);
}
private void LoadModelInternal(string filename, Scene scene, CModelAsset asset, string assetPath)
{
string modelPath = Path.GetDirectoryName(filename);
Matrix identity = Matrix.Identity;
CMeshLoadingJob loadingJob = new CMeshLoadingJob(scene, modelPath);
loadingJob.LoadedTextures = new Dictionary <string, CTextureAsset>();
loadingJob.LoadedMaterials = new Dictionary <string, CMaterialAsset>();
AddMeshes(scene.RootNode, asset, assetPath, loadingJob, ref identity);
}
public bool Import(string filename, string importPath, bool bAlwaysImport = false)
{
// Block new loads and wait for our current load to finish
m_bIsLoading = true;
m_currentLoadTask?.Wait();
// Load the asset synchronous
Scene scene = m_importer.ImportFile(filename, PostProcessPreset.TargetRealTimeMaximumQuality | PostProcessPreset.ConvertToLeftHanded);
if (scene.HasMeshes)
{
if (scene.MeshCount > 1)
{
CModelAsset outModel = new CModelAsset();
LoadModelInternal(filename, scene, outModel, importPath);
outModel.LoadFinished();
outModel.Name = Path.GetFileNameWithoutExtension(filename);
if (CAssetRegistry.Instance.RequestRegisterAsset(outModel, importPath + "Models/", out CModelAsset existingModel, bAlwaysImport))
{
existingModel.WaitUntilLoaded();
}
}
else
{
string basePath = Path.GetDirectoryName(filename);
CMeshLoadingJob loadingJob = new CMeshLoadingJob(scene, basePath);
CMeshAsset outMesh = new CMeshAsset();
LoadMeshInternal(0, outMesh, loadingJob, importPath, Path.GetFileNameWithoutExtension(filename), bAlwaysImport);
outMesh.LoadFinished();
}
}
// Unblock loader
m_bIsLoading = false;
// Continue loading request
StartNextLoadRequest();
return(true);
}
private void LoadMeshInternal(int meshIndex, CMeshAsset asset, CMeshLoadingJob loadingJob, string assetPath, string nameOverride = null, bool bAlwaysImport = false)
{
Assimp.Mesh assimpMesh = loadingJob.Scene.Meshes[meshIndex];
// Load texture and material from the file if present
//todo henning extract more textures
Material material = loadingJob.Scene.Materials[assimpMesh.MaterialIndex];
if (material != null && material.GetMaterialTextureCount(TextureType.Diffuse) > 0)
{
if (material.GetMaterialTexture(TextureType.Diffuse, 0, out TextureSlot texture))
{
if (loadingJob.LoadedMaterials == null || !loadingJob.LoadedMaterials.TryGetValue(material.Name, out CMaterialAsset materialAsset))
{
materialAsset = new CMaterialAsset();
loadingJob.LoadedMaterials?.Add(material.Name, materialAsset);
// Make sure we only load each referenced texture once
if (loadingJob.LoadedTextures == null || !loadingJob.LoadedTextures.TryGetValue(texture.FilePath, out CTextureAsset textureAsset))
{
textureAsset = CImportManager.Instance.TextureImporter.ImportTextureAsync(loadingJob.BasePath + "\\" + texture.FilePath, assetPath + "Textures/");
loadingJob.LoadedTextures?.Add(texture.FilePath, textureAsset);
}
SShaderParameter textureParameter = new SShaderParameter()
{
parameterData = new CAssetReference <CTextureAsset>(textureAsset),
parameterType = EShaderParameterType.Texture
};
materialAsset.MaterialParameters.Add(new SMaterialParameterEntry(new SHashedName("DiffuseTexture"), textureParameter));
materialAsset.Name = material.Name;
if (CAssetRegistry.Instance.RequestRegisterAsset(materialAsset, assetPath + "Materials/", out CMaterialAsset existingMaterial))
{
existingMaterial.WaitUntilLoaded();
existingMaterial.CopyFrom(existingMaterial);
}
materialAsset.LoadFinished();
}
asset.MaterialAsset = materialAsset;
}
}
bool hasTexCoords = assimpMesh.HasTextureCoords(0);
bool hasColors = assimpMesh.HasVertexColors(0);
bool hasNormals = assimpMesh.HasNormals;
bool hasTangents = assimpMesh.Tangents != null && assimpMesh.Tangents.Count > 0;
bool hasBiTangents = assimpMesh.BiTangents != null && assimpMesh.BiTangents.Count > 0;
switch (assimpMesh.PrimitiveType)
{
case PrimitiveType.Point:
asset.PrimitiveTopology = PrimitiveTopology.PointList;
break;
case PrimitiveType.Line:
asset.PrimitiveTopology = PrimitiveTopology.LineList;
break;
case PrimitiveType.Triangle:
asset.PrimitiveTopology = PrimitiveTopology.TriangleList;
break;
default:
throw new ArgumentOutOfRangeException("Primtive Type not supported: " + assimpMesh.PrimitiveType.ToString());
}
asset.FaceCount = assimpMesh.FaceCount;
asset.VertexData = new SVertexInfo[assimpMesh.VertexCount];
Vector3 boundingBoxMin = new Vector3(1e10f, 1e10f, 1e10f);
Vector3 boundingBoxMax = new Vector3(-1e10f, -1e10f, -1e10f);
for (int i = 0; i < assimpMesh.VertexCount; i++)
{
SVertexInfo vertexInfo = new SVertexInfo();
vertexInfo.position = FromAssimpVector(assimpMesh.Vertices[i]);
boundingBoxMin.X = Math.Min(vertexInfo.position.X, boundingBoxMin.X);
boundingBoxMin.Y = Math.Min(vertexInfo.position.Y, boundingBoxMin.Y);
boundingBoxMin.Z = Math.Min(vertexInfo.position.Z, boundingBoxMin.Z);
boundingBoxMax.X = Math.Max(vertexInfo.position.X, boundingBoxMax.X);
boundingBoxMax.Y = Math.Max(vertexInfo.position.Y, boundingBoxMax.Y);
boundingBoxMax.Z = Math.Max(vertexInfo.position.Z, boundingBoxMax.Z);
if (hasColors)
{
vertexInfo.color = FromAssimpColor(assimpMesh.VertexColorChannels[0][i]);
}
else
{
vertexInfo.color = Vector4.One;
}
if (hasNormals)
{
vertexInfo.normal = FromAssimpVector(assimpMesh.Normals[i]);
}
if (hasBiTangents)
{
vertexInfo.biTangent = FromAssimpVector(assimpMesh.BiTangents[i]);
}
if (hasTangents)
{
vertexInfo.tangent = FromAssimpVector(assimpMesh.Tangents[i]);
}
if (hasTexCoords)
{
Vector3D assimpTexCoord = assimpMesh.TextureCoordinateChannels[0][i];
vertexInfo.texCoord = new Vector2(assimpTexCoord.X, assimpTexCoord.Y);
}
asset.VertexData[i] = vertexInfo;
}
asset.AABBMin = boundingBoxMin;
asset.AABBMax = boundingBoxMax;
asset.IndexData = assimpMesh.GetIndices();
asset.Name = nameOverride ?? assimpMesh.Name;
if (CAssetRegistry.Instance.RequestRegisterAsset(asset, assetPath, out CMeshAsset existingAsset, true))
{
existingAsset.WaitUntilLoaded();
asset.CopyFrom(existingAsset);
}
}
