public Texture2D GetMetallicRoughnessConverted(IImporterContext ctx)
{
if (m_metallicRoughness == null)
{
//m_metallicRoughness = new Texture2D(Texture.width, Texture.height, TextureFormat.ARGB32, true);
var texture = CopyTexture();
texture.SetPixels32(texture.GetPixels32().Select(ConvertMetallicRoughness).ToArray());
texture.name = this.Texture.name + ".converted";
m_metallicRoughness = texture;
ctx.AddObjectToAsset(texture.name, texture);
}
return(m_metallicRoughness);
}
public static GameObject Import(IImporterContext ctx, string json,
ArraySegment <Byte> glbBinChunk,
OnLoadCallback callback = null,
GetBlendShapeName getBlendShapeName = null,
CreateMaterialFunc createMaterial = null
)
{
if (getBlendShapeName == null)
{
getBlendShapeName = DefaultGetBlendShapeName;
}
// exclude not gltf-2.0
var parsed = json.ParseAsJson();
try
{
if (parsed["asset"]["version"].GetString() != "2.0")
{
Debug.LogWarningFormat("is not gltf-2.0: {0}", ctx.Path);
return(null);
}
}
catch (Exception)
{
Debug.LogWarningFormat("{0}: fail to parse json", ctx.Path);
return(null);
}
// parse json
glTF gltf = null;
try
{
gltf = JsonUtility.FromJson <glTF>(json);
}
catch (Exception)
{
Debug.LogWarningFormat("{0}: fail to parse json", ctx.Path);
return(null);
}
if (gltf == null)
{
Debug.LogWarningFormat("{0}: fail to parse json", ctx.Path);
return(null);
}
if (gltf.asset.version != "2.0")
{
Debug.LogWarningFormat("unknown gltf version {0}", gltf.asset.version);
return(null);
}
gltf.baseDir = Path.GetDirectoryName(ctx.Path);
//Debug.LogFormat("{0}: {1}", ctx.Path, gltf);
foreach (var buffer in gltf.buffers)
{
buffer.OpenStorage(gltf.baseDir, glbBinChunk);
}
// textures
var textures = ImportTextures(gltf)
.Select(x =>
{
var samplerIndex = gltf.textures[x.TextureIndex].sampler;
var sampler = gltf.samplers[samplerIndex];
if (x.Texture == null)
{
Debug.LogWarningFormat("May be import order, not yet texture is not imported. Later, manualy reimport {0}", ctx.Path);
}
else
{
SetSampler(x.Texture, sampler);
if (!x.IsAsset)
{
ctx.AddObjectToAsset(x.Texture.name, x.Texture);
}
}
return(x);
})
.ToArray();
if (createMaterial == null)
{
createMaterial = CreateMaterialFuncFromShader(Shader.Find("Standard"));
}
// materials
List <Material> materials = new List <Material>();
if (gltf.materials == null || !gltf.materials.Any())
{
materials.Add(createMaterial(ctx, 0, null, textures));
}
else
{
for (int i = 0; i < gltf.materials.Count; ++i)
{
Material mat = null;
// [Maquette Code]
if (Maquette.Unity.MqAddonUtility.NeedsMaquetteMaterial(gltf.materials[i].name))
{
string materialName = gltf.materials[i].name;
materialName = materialName.Replace(" (Instance)", "");
mat = Maquette.Unity.MqAddonUtility.CreateMaquetteMaterial(materialName);
if (gltf.materials[i].pbrMetallicRoughness.baseColorTexture != null)
{
int baseTextureIndex = gltf.materials[i].pbrMetallicRoughness.baseColorTexture.index;
if (baseTextureIndex >= 0 && baseTextureIndex < textures.Length)
{
var texture = textures[baseTextureIndex];
mat.mainTexture = texture.Texture;
}
}
}
else
{
mat = createMaterial(ctx, i, gltf.materials[i], textures);
}
materials.Add(mat);
}
}
foreach (var material in materials)
{
if (material != null)
{
ctx.AddObjectToAsset(material.name, material);
}
}
// meshes
var meshes = gltf.meshes.Select((x, i) =>
{
var meshWithMaterials = ImportMesh(gltf, i, x, materials, getBlendShapeName);
var mesh = meshWithMaterials.Mesh;
if (string.IsNullOrEmpty(mesh.name))
{
mesh.name = string.Format("UniGLTF import#{0}", i);
}
ctx.AddObjectToAsset(mesh.name, mesh);
return(meshWithMaterials);
}).ToArray();
// nodes
var _nodes = gltf.nodes.Select(x => ImportNode(x)).ToArray();
var nodes = _nodes.Select((go, i) =>
{
if (string.IsNullOrEmpty(go.name))
{
go.name = string.Format("node{0:000}", i);
}
var nodeWithSkin = new TransformWithSkin
{
Transform = go.transform,
};
var node = gltf.nodes[i];
//
// build hierachy
//
if (node.children != null)
{
foreach (var child in node.children)
{
_nodes[child].transform.SetParent(_nodes[i].transform,
false // node has local transform
);
}
}
//
// attach mesh
//
if (node.mesh != -1)
{
var mesh = meshes[node.mesh];
if (mesh.Mesh.blendShapeCount == 0 && node.skin == -1)
{
// without blendshape and bone skinning
var filter = go.AddComponent <MeshFilter>();
filter.sharedMesh = mesh.Mesh;
var renderer = go.AddComponent <MeshRenderer>();
renderer.sharedMaterials = mesh.Materials;
}
else
{
var renderer = go.AddComponent <SkinnedMeshRenderer>();
if (node.skin != -1)
{
nodeWithSkin.SkinIndex = node.skin;
}
renderer.sharedMesh = mesh.Mesh;
renderer.sharedMaterials = mesh.Materials;
}
}
return(nodeWithSkin);
}).ToArray();
//
// fix node's coordinate. z-back to z-forward
//
var globalTransformMap = nodes.ToDictionary(x => x.Transform, x => new PosRot
{
Position = x.Transform.position,
Rotation = x.Transform.rotation,
});
foreach (var x in gltf.rootnodes)
{
// fix nodes coordinate
// reverse Z in global
var t = nodes[x].Transform;
//t.SetParent(root.transform, false);
foreach (var transform in t.Traverse())
{
var g = globalTransformMap[transform];
transform.position = g.Position.ReverseZ();
transform.rotation = g.Rotation.ReverseZ();
}
}
// skinning
foreach (var x in nodes)
{
var skinnedMeshRenderer = x.Transform.GetComponent <SkinnedMeshRenderer>();
if (skinnedMeshRenderer != null)
{
var mesh = skinnedMeshRenderer.sharedMesh;
if (x.SkinIndex.HasValue)
{
if (mesh == null)
{
throw new Exception();
}
if (skinnedMeshRenderer == null)
{
throw new Exception();
}
if (x.SkinIndex.Value < gltf.skins.Count)
{
var skin = gltf.skins[x.SkinIndex.Value];
skinnedMeshRenderer.sharedMesh = null;
var joints = skin.joints.Select(y => nodes[y].Transform).ToArray();
skinnedMeshRenderer.bones = joints;
//skinnedMeshRenderer.rootBone = nodes[skin.skeleton].Transform;
if (skin.inverseBindMatrices != -1)
{
// BlendShape only ?
#if false
// https://docs.unity3d.com/ScriptReference/Mesh-bindposes.html
var hipsParent = nodes[0].Transform;
var calculatedBindPoses = joints.Select(y => y.worldToLocalMatrix * hipsParent.localToWorldMatrix).ToArray();
mesh.bindposes = calculatedBindPoses;
#else
var bindPoses = gltf.GetArrayFromAccessor <Matrix4x4>(skin.inverseBindMatrices)
.Select(y => y.ReverseZ())
.ToArray()
;
mesh.bindposes = bindPoses;
#endif
}
skinnedMeshRenderer.sharedMesh = mesh;
}
}
}
}
var root = new GameObject("_root_");
ctx.SetMainGameObject("root", root);
foreach (var x in gltf.rootnodes)
{
// fix nodes coordinate
// reverse Z in global
var t = nodes[x].Transform;
t.SetParent(root.transform, false);
}
// animation
if (gltf.animations != null && gltf.animations.Any())
{
var clip = new AnimationClip();
clip.name = ANIMATION_NAME;
clip.ClearCurves();
ImportAnimation(root.transform, clip, gltf.animations, nodes.Select(x => x.Transform).ToArray(), gltf);
clip.legacy = true;
clip.name = "legacy";
clip.wrapMode = WrapMode.Loop;
var animation = root.AddComponent <Animation>();
animation.clip = clip;
ctx.AddObjectToAsset(ANIMATION_NAME, clip);
}
if (callback != null)
{
callback(ctx, json,
nodes.Select(x => x.Transform).ToArray(),
meshes.Select(x => x.Mesh).ToList()
);
}
Debug.LogFormat("Import {0}", ctx.Path);
return(root);
}