public static MeshContext ReadMesh(ImporterContext ctx, int meshIndex)
{
var gltfMesh = ctx.GLTF.meshes[meshIndex];
glTFAttributes lastAttributes = null;
var sharedAttributes = true;
foreach (var prim in gltfMesh.primitives)
{
if (lastAttributes != null && !prim.attributes.Equals(lastAttributes))
{
sharedAttributes = false;
break;
}
lastAttributes = prim.attributes;
}
var meshContext = sharedAttributes
? _ImportMeshSharingVertexBuffer(ctx, gltfMesh)
: _ImportMeshIndependentVertexBuffer(ctx, gltfMesh)
;
meshContext.name = gltfMesh.name;
if (string.IsNullOrEmpty(meshContext.name))
{
meshContext.name = string.Format("UniGLTF import#{0}", meshIndex);
}
return(meshContext);
}
public static string ToJson(this glTFAttributes self)
{
var f = new JsonFormatter();
GltfSerializer.Serialize_gltf_meshes__primitives__attributes(f, self);
return(f.ToString());
}
public void AttributesTest()
{
var model = new glTFAttributes
{
POSITION = 0,
};
var json = model.ToJson();
Assert.AreEqual(@"{""POSITION"":0}", json);
Debug.Log(json);
}
/// <summary>
/// バッファ共有方式(vrm-0.x)の判定。
/// import の後方互換性のためで、vrm-1.0 export では使いません。
///
/// * バッファ共用方式は VertexBuffer が同じでSubMeshの index buffer がスライドしていく方式
/// * バッファがひとつのとき
/// * すべての primitive の attribute が 同一の accessor を使用している時
///
/// </summary>
private static bool HasSharedVertexBuffer(glTFMesh gltfMesh)
{
glTFAttributes lastAttributes = null;
foreach (var prim in gltfMesh.primitives)
{
if (lastAttributes != null && !prim.attributes.Equals(lastAttributes))
{
return(false);
}
lastAttributes = prim.attributes;
}
return(true);
}
static bool HasSharedVertexBuffer(glTFMesh gltfMesh)
{
glTFAttributes lastAttributes = null;
var sharedAttributes = true;
foreach (var prim in gltfMesh.primitives)
{
if (lastAttributes != null && !prim.attributes.Equals(lastAttributes))
{
sharedAttributes = false;
break;
}
lastAttributes = prim.attributes;
}
return(sharedAttributes);
}
public void AttributesTest()
{
var model = new glTFAttributes
{
POSITION = 0,
};
var json = model.ToJson();
Assert.AreEqual(@"{""POSITION"":0}", json);
Debug.Log(json);
var c = new JsonSchemaValidationContext("")
{
EnableDiagnosisForNotRequiredFields = true,
};
var json2 = JsonSchema.FromType <glTFAttributes>().Serialize(model, c);
Assert.AreEqual(json, json2);
}
public MeshContext ReadMesh(ImporterContext ctx, int meshIndex)
{
var gltfMesh = ctx.GLTF.meshes[meshIndex];
bool sharedMorphTarget = gltfMesh.extras != null && gltfMesh.extras.targetNames.Count > 0;
MeshContext meshContext;
if (sharedMorphTarget)
{
meshContext = _ImportMeshSharingMorphTarget(ctx, gltfMesh);
}
else
{
glTFAttributes lastAttributes = null;
var sharedAttributes = true;
foreach (var prim in gltfMesh.primitives)
{
if (lastAttributes != null && !prim.attributes.Equals(lastAttributes))
{
sharedAttributes = false;
break;
}
lastAttributes = prim.attributes;
}
meshContext = sharedAttributes
? _ImportMeshSharingVertexBuffer(ctx, gltfMesh)
: _ImportMeshIndependentVertexBuffer(ctx, gltfMesh);
}
meshContext.name = gltfMesh.name;
if (string.IsNullOrEmpty(meshContext.name))
{
meshContext.name = string.Format("UniGLTF import#{0}", meshIndex);
}
return(meshContext);
}
static glTFMesh ExportPrimitives(glTF gltf, int bufferIndex,
string rendererName,
Mesh mesh, Material[] materials,
List <Material> unityMaterials)
{
var positions = mesh.vertices.Select(y => y.ReverseZ()).ToArray();
var positionAccessorIndex = gltf.ExtendBufferAndGetAccessorIndex(bufferIndex, positions, glBufferTarget.ARRAY_BUFFER);
gltf.accessors[positionAccessorIndex].min = positions.Aggregate(positions[0], (a, b) => new Vector3(Mathf.Min(a.x, b.x), Math.Min(a.y, b.y), Mathf.Min(a.z, b.z))).ToArray();
gltf.accessors[positionAccessorIndex].max = positions.Aggregate(positions[0], (a, b) => new Vector3(Mathf.Max(a.x, b.x), Math.Max(a.y, b.y), Mathf.Max(a.z, b.z))).ToArray();
var normalAccessorIndex = gltf.ExtendBufferAndGetAccessorIndex(bufferIndex, mesh.normals.Select(y => y.ReverseZ()).ToArray(), glBufferTarget.ARRAY_BUFFER);
#if GLTF_EXPORT_TANGENTS
var tangentAccessorIndex = gltf.ExtendBufferAndGetAccessorIndex(bufferIndex, mesh.tangents.Select(y => y.ReverseZ()).ToArray(), glBufferTarget.ARRAY_BUFFER);
#endif
var uvAccessorIndex = gltf.ExtendBufferAndGetAccessorIndex(bufferIndex, mesh.uv.Select(y => y.ReverseUV()).ToArray(), glBufferTarget.ARRAY_BUFFER);
var colorAccessorIndex = gltf.ExtendBufferAndGetAccessorIndex(bufferIndex, mesh.colors, glBufferTarget.ARRAY_BUFFER);
var boneweights = mesh.boneWeights;
var weightAccessorIndex = gltf.ExtendBufferAndGetAccessorIndex(bufferIndex, boneweights.Select(y => new Vector4(y.weight0, y.weight1, y.weight2, y.weight3)).ToArray(), glBufferTarget.ARRAY_BUFFER);
var jointsAccessorIndex = gltf.ExtendBufferAndGetAccessorIndex(bufferIndex, boneweights.Select(y => new UShort4((ushort)y.boneIndex0, (ushort)y.boneIndex1, (ushort)y.boneIndex2, (ushort)y.boneIndex3)).ToArray(), glBufferTarget.ARRAY_BUFFER);
var attributes = new glTFAttributes
{
POSITION = positionAccessorIndex,
};
if (normalAccessorIndex != -1)
{
attributes.NORMAL = normalAccessorIndex;
}
#if GLTF_EXPORT_TANGENTS
if (tangentAccessorIndex != -1)
{
attributes.TANGENT = tangentAccessorIndex;
}
#endif
if (uvAccessorIndex != -1)
{
attributes.TEXCOORD_0 = uvAccessorIndex;
}
if (colorAccessorIndex != -1)
{
attributes.COLOR_0 = colorAccessorIndex;
}
if (weightAccessorIndex != -1)
{
attributes.WEIGHTS_0 = weightAccessorIndex;
}
if (jointsAccessorIndex != -1)
{
attributes.JOINTS_0 = jointsAccessorIndex;
}
var gltfMesh = new glTFMesh(mesh.name);
for (int j = 0; j < mesh.subMeshCount; ++j)
{
var indices = TriangleUtil.FlipTriangle(mesh.GetIndices(j)).Select(y => (uint)y).ToArray();
var indicesAccessorIndex = gltf.ExtendBufferAndGetAccessorIndex(bufferIndex, indices, glBufferTarget.ELEMENT_ARRAY_BUFFER);
if (j >= materials.Length)
{
Debug.LogWarningFormat("{0}.materials is not enough", rendererName);
break;
}
gltfMesh.primitives.Add(new glTFPrimitives
{
attributes = attributes,
indices = indicesAccessorIndex,
mode = 4, // triangels ?
material = unityMaterials.IndexOf(materials[j])
});
}
return(gltfMesh);
}
static glTFMesh ExportPrimitives(glTF gltf, int bufferIndex,
MeshWithRenderer unityMesh, List <Material> unityMaterials)
{
var mesh = unityMesh.Mesh;
var materials = unityMesh.Renderer.sharedMaterials;
var positions = mesh.vertices.Select(y => y.ReverseZ()).ToArray();
var positionAccessorIndex = gltf.ExtendBufferAndGetAccessorIndex(bufferIndex, positions, glBufferTarget.ARRAY_BUFFER);
gltf.accessors[positionAccessorIndex].min = positions.Aggregate(positions[0], (a, b) => new Vector3(Mathf.Min(a.x, b.x), Math.Min(a.y, b.y), Mathf.Min(a.z, b.z))).ToArray();
gltf.accessors[positionAccessorIndex].max = positions.Aggregate(positions[0], (a, b) => new Vector3(Mathf.Max(a.x, b.x), Math.Max(a.y, b.y), Mathf.Max(a.z, b.z))).ToArray();
var normalAccessorIndex = gltf.ExtendBufferAndGetAccessorIndex(bufferIndex, mesh.normals.Select(y => y.normalized.ReverseZ()).ToArray(), glBufferTarget.ARRAY_BUFFER);
#if GLTF_EXPORT_TANGENTS
var tangentAccessorIndex = gltf.ExtendBufferAndGetAccessorIndex(bufferIndex, mesh.tangents.Select(y => y.ReverseZ()).ToArray(), glBufferTarget.ARRAY_BUFFER);
#endif
var uvAccessorIndex0 = gltf.ExtendBufferAndGetAccessorIndex(bufferIndex, mesh.uv.Select(y => y.ReverseUV()).ToArray(), glBufferTarget.ARRAY_BUFFER);
var uvAccessorIndex1 = gltf.ExtendBufferAndGetAccessorIndex(bufferIndex, mesh.uv2.Select(y => y.ReverseUV()).ToArray(), glBufferTarget.ARRAY_BUFFER);
var colorAccessorIndex = -1;
var vColorState = MeshExportInfo.DetectVertexColor(mesh, materials);
if (vColorState == MeshExportInfo.VertexColorState.ExistsAndIsUsed || // VColor使っている
vColorState == MeshExportInfo.VertexColorState.ExistsAndMixed // VColorを使っているところと使っていないところが混在(とりあえずExportする)
)
{
// UniUnlit で Multiply 設定になっている
colorAccessorIndex = gltf.ExtendBufferAndGetAccessorIndex(bufferIndex, mesh.colors, glBufferTarget.ARRAY_BUFFER);
}
var boneweights = mesh.boneWeights;
var weightAccessorIndex = gltf.ExtendBufferAndGetAccessorIndex(bufferIndex, boneweights.Select(y => new Vector4(y.weight0, y.weight1, y.weight2, y.weight3)).ToArray(), glBufferTarget.ARRAY_BUFFER);
var jointsAccessorIndex = gltf.ExtendBufferAndGetAccessorIndex(bufferIndex, boneweights.Select(y =>
new UShort4(
(ushort)unityMesh.GetJointIndex(y.boneIndex0),
(ushort)unityMesh.GetJointIndex(y.boneIndex1),
(ushort)unityMesh.GetJointIndex(y.boneIndex2),
(ushort)unityMesh.GetJointIndex(y.boneIndex3))
).ToArray(), glBufferTarget.ARRAY_BUFFER);
var attributes = new glTFAttributes
{
POSITION = positionAccessorIndex,
};
if (normalAccessorIndex != -1)
{
attributes.NORMAL = normalAccessorIndex;
}
#if GLTF_EXPORT_TANGENTS
if (tangentAccessorIndex != -1)
{
attributes.TANGENT = tangentAccessorIndex;
}
#endif
if (uvAccessorIndex0 != -1)
{
attributes.TEXCOORD_0 = uvAccessorIndex0;
}
if (uvAccessorIndex1 != -1)
{
attributes.TEXCOORD_1 = uvAccessorIndex1;
}
if (colorAccessorIndex != -1)
{
attributes.COLOR_0 = colorAccessorIndex;
}
if (weightAccessorIndex != -1)
{
attributes.WEIGHTS_0 = weightAccessorIndex;
}
if (jointsAccessorIndex != -1)
{
attributes.JOINTS_0 = jointsAccessorIndex;
}
var gltfMesh = new glTFMesh(mesh.name);
var indices = new List <uint>();
for (int j = 0; j < mesh.subMeshCount; ++j)
{
indices.Clear();
var triangles = mesh.GetIndices(j);
if (triangles.Length == 0)
{
// https://github.com/vrm-c/UniVRM/issues/664
continue;
}
for (int i = 0; i < triangles.Length; i += 3)
{
var i0 = triangles[i];
var i1 = triangles[i + 1];
var i2 = triangles[i + 2];
// flip triangle
indices.Add((uint)i2);
indices.Add((uint)i1);
indices.Add((uint)i0);
}
var indicesAccessorIndex = gltf.ExtendBufferAndGetAccessorIndex(bufferIndex, indices.ToArray(), glBufferTarget.ELEMENT_ARRAY_BUFFER);
if (indicesAccessorIndex < 0)
{
// https://github.com/vrm-c/UniVRM/issues/664
throw new Exception();
}
if (j >= materials.Length)
{
Debug.LogWarningFormat("{0}.materials is not enough", unityMesh.Renderer.name);
break;
}
gltfMesh.primitives.Add(new glTFPrimitives
{
attributes = attributes,
indices = indicesAccessorIndex,
mode = 4, // triangles ?
material = unityMaterials.IndexOf(materials[j])
});
}
return(gltfMesh);
}
public static Exported FromGameObject(glTF gltf, GameObject go)
{
var bytesBuffer = new ArrayByteBuffer();
var bufferIndex = gltf.AddBuffer(bytesBuffer);
var unityNodes = go.transform.Traverse()
.Skip(1) // exclude root object for the symmetry with the importer
.ToList();
#region Material
var unityMaterials = unityNodes.SelectMany(x => x.GetSharedMaterials()).Where(x => x != null).Distinct().ToList();
var unityTextures = unityMaterials.SelectMany(x => x.GetTextures()).Where(x => x != null).Distinct().ToList();
for (int i = 0; i < unityTextures.Count; ++i)
{
var texture = unityTextures[i];
var bytesWithPath = new BytesWithPath(texture);;
// add view
var view = gltf.buffers[bufferIndex].Storage.Extend(bytesWithPath.Bytes, glBufferTarget.NONE);
var viewIndex = gltf.AddBufferView(view);
// add image
var imageIndex = gltf.images.Count;
gltf.images.Add(new glTFImage
{
bufferView = viewIndex,
mimeType = bytesWithPath.Mime,
});
// add sampler
var filter = default(glFilter);
switch (texture.filterMode)
{
case FilterMode.Point:
filter = glFilter.NEAREST;
break;
default:
filter = glFilter.LINEAR;
break;
}
var wrap = default(glWrap);
switch (texture.wrapMode)
{
case TextureWrapMode.Clamp:
wrap = glWrap.CLAMP_TO_EDGE;
break;
case TextureWrapMode.Repeat:
wrap = glWrap.REPEAT;
break;
#if UNITY_2017_OR_NEWER
case TextureWrapMode.Mirror:
wrap = glWrap.MIRRORED_REPEAT;
break;
#endif
default:
throw new NotImplementedException();
}
var samplerIndex = gltf.samplers.Count;
gltf.samplers.Add(new glTFTextureSampler
{
magFilter = filter,
minFilter = filter,
wrapS = wrap,
wrapT = wrap,
});
// add texture
gltf.textures.Add(new glTFTexture
{
sampler = samplerIndex,
source = imageIndex,
});
}
gltf.materials = unityMaterials.Select(x => ExportMaterial(x, unityTextures)).ToList();
#endregion
#region Meshes
var unityMeshes = unityNodes
.Select(x => new MeshWithRenderer
{
Mesh = x.GetSharedMesh(),
Rendererer = x.GetComponent <Renderer>(),
})
.Where(x => x.Mesh != null)
.ToList();
for (int i = 0; i < unityMeshes.Count; ++i)
{
var x = unityMeshes[i];
var mesh = x.Mesh;
var materials = x.Rendererer.sharedMaterials;
var positions = mesh.vertices.Select(y => y.ReverseZ()).ToArray();
var positionAccessorIndex = gltf.ExtendBufferAndGetAccessorIndex(bufferIndex, positions, glBufferTarget.ARRAY_BUFFER);
gltf.accessors[positionAccessorIndex].min = positions.Aggregate(positions[0], (a, b) => new Vector3(Mathf.Min(a.x, b.x), Math.Min(a.y, b.y), Mathf.Min(a.z, b.z))).ToArray();
gltf.accessors[positionAccessorIndex].max = positions.Aggregate(positions[0], (a, b) => new Vector3(Mathf.Max(a.x, b.x), Math.Max(a.y, b.y), Mathf.Max(a.z, b.z))).ToArray();
var normalAccessorIndex = gltf.ExtendBufferAndGetAccessorIndex(bufferIndex, mesh.normals.Select(y => y.ReverseZ()).ToArray(), glBufferTarget.ARRAY_BUFFER);
var tangentAccessorIndex = gltf.ExtendBufferAndGetAccessorIndex(bufferIndex, mesh.tangents.Select(y => y.ReverseZ()).ToArray(), glBufferTarget.ARRAY_BUFFER);
var colorAccessorIndex = gltf.ExtendBufferAndGetAccessorIndex(bufferIndex, mesh.colors.Select(y => (Vector4)y).ToArray(), glBufferTarget.ARRAY_BUFFER);
var uvAccessorIndex = gltf.ExtendBufferAndGetAccessorIndex(bufferIndex, mesh.uv.Select(y => y.ReverseY()).ToArray(), glBufferTarget.ARRAY_BUFFER);
var boneweights = mesh.boneWeights;
var weightAccessorIndex = gltf.ExtendBufferAndGetAccessorIndex(bufferIndex, boneweights.Select(y => new Vector4(y.weight0, y.weight1, y.weight2, y.weight3)).ToArray(), glBufferTarget.ARRAY_BUFFER);
var jointsAccessorIndex = gltf.ExtendBufferAndGetAccessorIndex(bufferIndex, boneweights.Select(y => new UShort4((ushort)y.boneIndex0, (ushort)y.boneIndex1, (ushort)y.boneIndex2, (ushort)y.boneIndex3)).ToArray(), glBufferTarget.ARRAY_BUFFER);
var attributes = new glTFAttributes
{
POSITION = positionAccessorIndex,
};
if (normalAccessorIndex != -1)
{
attributes.NORMAL = normalAccessorIndex;
}
if (tangentAccessorIndex != -1)
{
attributes.TANGENT = tangentAccessorIndex;
}
if (colorAccessorIndex != -1)
{
attributes.COLOR_0 = colorAccessorIndex;
}
if (uvAccessorIndex != -1)
{
attributes.TEXCOORD_0 = uvAccessorIndex;
}
if (weightAccessorIndex != -1)
{
attributes.WEIGHTS_0 = weightAccessorIndex;
}
if (jointsAccessorIndex != -1)
{
attributes.JOINTS_0 = jointsAccessorIndex;
}
gltf.meshes.Add(new glTFMesh(mesh.name));
for (int j = 0; j < mesh.subMeshCount; ++j)
{
var indices = TriangleUtil.FlipTriangle(mesh.GetIndices(j)).Select(y => (uint)y).ToArray();
var indicesAccessorIndex = gltf.ExtendBufferAndGetAccessorIndex(bufferIndex, indices, glBufferTarget.ELEMENT_ARRAY_BUFFER);
gltf.meshes.Last().primitives.Add(new glTFPrimitives
{
attributes = attributes,
indices = indicesAccessorIndex,
mode = 4, // triangels ?
//material = unityMaterials.IndexOf(materials[j])
material = unityMaterials.IndexOf(materials[0]) // JIA change for Maquette image entity
});
}
if (mesh.blendShapeCount > 0)
{
for (int j = 0; j < mesh.blendShapeCount; ++j)
{
var blendShapeVertices = mesh.vertices;
var blendShpaeNormals = mesh.normals;
var blendShapeTangents = mesh.tangents.Select(y => (Vector3)y).ToArray();
var blendShapeColors = mesh.colors.Select(y => (Vector4)y).ToArray();
var k = mesh.GetBlendShapeFrameCount(j);
mesh.GetBlendShapeFrameVertices(j, k - 1, blendShapeVertices, blendShpaeNormals, null);
var blendShapePositionAccessorIndex = gltf.ExtendBufferAndGetAccessorIndex(bufferIndex,
blendShapeVertices.Select(y => y.ReverseZ()).ToArray(), glBufferTarget.ARRAY_BUFFER);
var blendShapeNormalAccessorIndex = gltf.ExtendBufferAndGetAccessorIndex(bufferIndex,
blendShpaeNormals.Select(y => y.ReverseZ()).ToArray(), glBufferTarget.ARRAY_BUFFER);
var blendShapeTangentAccessorIndex = gltf.ExtendBufferAndGetAccessorIndex(bufferIndex,
blendShapeTangents.Select(y => y.ReverseZ()).ToArray(), glBufferTarget.ARRAY_BUFFER);
var blendShapeColorAccessorIndex = gltf.ExtendBufferAndGetAccessorIndex(bufferIndex,
blendShapeColors.ToArray(), glBufferTarget.ARRAY_BUFFER);
//
// first primitive has whole blendShape
//
gltf.meshes.Last().primitives[0].targets.Add(new glTFAttributes
{
POSITION = blendShapePositionAccessorIndex,
NORMAL = blendShapeNormalAccessorIndex,
TANGENT = blendShapeTangentAccessorIndex,
COLOR_0 = blendShapeColorAccessorIndex,
});
}
}
}
#endregion
#region Skins
var unitySkins = unityNodes
.Select(x => x.GetComponent <SkinnedMeshRenderer>()).Where(x => x != null)
.ToList();
gltf.nodes = unityNodes.Select(x => ExportNode(x, unityNodes, unityMeshes.Select(y => y.Mesh).ToList(), unitySkins)).ToList();
gltf.scenes = new List <gltfScene>
{
new gltfScene
{
nodes = go.transform.GetChildren().Select(x => unityNodes.IndexOf(x)).ToArray(),
}
};
foreach (var x in unitySkins)
{
var matrices = x.sharedMesh.bindposes.Select(y => y.ReverseZ()).ToArray();
var accessor = gltf.ExtendBufferAndGetAccessorIndex(bufferIndex, matrices, glBufferTarget.NONE);
var skin = new glTFSkin
{
inverseBindMatrices = accessor,
joints = x.bones.Select(y => unityNodes.IndexOf(y)).ToArray(),
skeleton = unityNodes.IndexOf(x.rootBone),
};
var skinIndex = gltf.skins.Count;
gltf.skins.Add(skin);
foreach (var z in unityNodes.Where(y => y.Has(x)))
{
var nodeIndex = unityNodes.IndexOf(z);
gltf.nodes[nodeIndex].skin = skinIndex;
}
}
#endregion
#if UNITY_EDITOR
#region Animations
var animation = go.GetComponent <Animation>();
if (animation != null)
{
foreach (AnimationState state in animation)
{
var animationWithCurve = ExportAnimation(state.clip, go.transform, unityNodes);
foreach (var kv in animationWithCurve.SamplerMap)
{
var sampler = animationWithCurve.Animation.samplers[kv.Key];
var inputAccessorIndex = gltf.ExtendBufferAndGetAccessorIndex(bufferIndex, kv.Value.Input);
sampler.input = inputAccessorIndex;
var outputAccessorIndex = gltf.ExtendBufferAndGetAccessorIndex(bufferIndex, kv.Value.Output);
sampler.output = outputAccessorIndex;
// modify accessors
var outputAccessor = gltf.accessors[outputAccessorIndex];
var channel = animationWithCurve.Animation.channels.First(x => x.sampler == kv.Key);
switch (glTFAnimationTarget.GetElementCount(channel.target.path))
{
case 3:
outputAccessor.type = "VEC3";
outputAccessor.count /= 3;
break;
case 4:
outputAccessor.type = "VEC4";
outputAccessor.count /= 4;
break;
default:
throw new NotImplementedException();
}
}
gltf.animations.Add(animationWithCurve.Animation);
}
}
#endregion
#endif
// glb buffer
gltf.buffers[bufferIndex].UpdateByteLength();
return(new Exported
{
Meshes = unityMeshes,
Nodes = unityNodes.Select(x => x.transform).ToList(),
Materials = unityMaterials,
Textures = unityTextures,
});
}
public static void Serialize_gltf_meshes__primitives__attributes(JsonFormatter f, glTFAttributes value)
{
f.BeginMap();
if (value.POSITION >= 0)
{
f.Key("POSITION");
f.Value(value.POSITION);
}
if (value.NORMAL >= 0)
{
f.Key("NORMAL");
f.Value(value.NORMAL);
}
if (value.TANGENT >= 0)
{
f.Key("TANGENT");
f.Value(value.TANGENT);
}
if (value.TEXCOORD_0 >= 0)
{
f.Key("TEXCOORD_0");
f.Value(value.TEXCOORD_0);
}
if (value.TEXCOORD_1 >= 0)
{
f.Key("TEXCOORD_1");
f.Value(value.TEXCOORD_1);
}
if (value.COLOR_0 >= 0)
{
f.Key("COLOR_0");
f.Value(value.COLOR_0);
}
if (value.JOINTS_0 >= 0)
{
f.Key("JOINTS_0");
f.Value(value.JOINTS_0);
}
if (value.WEIGHTS_0 >= 0)
{
f.Key("WEIGHTS_0");
f.Value(value.WEIGHTS_0);
}
f.EndMap();
}
/// <summary>
/// primitive 間で vertex を共有する形で Export する。
/// UniVRM-0.71.0 以降は、MeshExporterDivided.Export もある。
///
/// * GLB/GLTF は shared(default) と divided を選択可能
/// * VRM0 は shared 仕様
/// * VRM1 は divided 仕様
///
/// /// </summary>
/// <param name="gltf"></param>
/// <param name="bufferIndex"></param>
/// <param name="unityMesh"></param>
/// <param name="unityMaterials"></param>
/// <param name="axisInverter"></param>
/// <param name="settings"></param>
/// <returns></returns>
public static (glTFMesh, Dictionary <int, int> blendShapeIndexMap) Export(ExportingGltfData data,
MeshExportInfo unityMesh, List <Material> unityMaterials,
IAxisInverter axisInverter, GltfExportSettings settings)
{
var mesh = unityMesh.Mesh;
var materials = unityMesh.Materials;
var positions = mesh.vertices.Select(axisInverter.InvertVector3).ToArray();
var positionAccessorIndex = data.ExtendBufferAndGetAccessorIndex(positions, glBufferTarget.ARRAY_BUFFER);
data.GLTF.accessors[positionAccessorIndex].min = positions.Aggregate(positions[0], (a, b) => new Vector3(Mathf.Min(a.x, b.x), Math.Min(a.y, b.y), Mathf.Min(a.z, b.z))).ToArray();
data.GLTF.accessors[positionAccessorIndex].max = positions.Aggregate(positions[0], (a, b) => new Vector3(Mathf.Max(a.x, b.x), Math.Max(a.y, b.y), Mathf.Max(a.z, b.z))).ToArray();
var normalAccessorIndex = data.ExtendBufferAndGetAccessorIndex(mesh.normals.Select(y => axisInverter.InvertVector3(y.normalized)).ToArray(), glBufferTarget.ARRAY_BUFFER);
int?tangentAccessorIndex = default;
if (settings.ExportTangents)
{
tangentAccessorIndex = data.ExtendBufferAndGetAccessorIndex(mesh.tangents.Select(axisInverter.InvertVector4).ToArray(), glBufferTarget.ARRAY_BUFFER);
}
var uvAccessorIndex0 = data.ExtendBufferAndGetAccessorIndex(mesh.uv.Select(y => y.ReverseUV()).ToArray(), glBufferTarget.ARRAY_BUFFER);
var uvAccessorIndex1 = data.ExtendBufferAndGetAccessorIndex(mesh.uv2.Select(y => y.ReverseUV()).ToArray(), glBufferTarget.ARRAY_BUFFER);
var colorAccessorIndex = -1;
var vColorState = VertexColorUtility.DetectVertexColor(mesh, materials);
if (vColorState == VertexColorState.ExistsAndIsUsed || // VColor使っている
vColorState == VertexColorState.ExistsAndMixed // VColorを使っているところと使っていないところが混在(とりあえずExportする)
)
{
// UniUnlit で Multiply 設定になっている
colorAccessorIndex = data.ExtendBufferAndGetAccessorIndex(mesh.colors, glBufferTarget.ARRAY_BUFFER);
}
var boneweights = mesh.boneWeights;
var weightAccessorIndex = data.ExtendBufferAndGetAccessorIndex(boneweights.Select(y => new Vector4(y.weight0, y.weight1, y.weight2, y.weight3)).ToArray(), glBufferTarget.ARRAY_BUFFER);
var jointsAccessorIndex = data.ExtendBufferAndGetAccessorIndex(boneweights.Select(y =>
new UShort4(
(ushort)unityMesh.GetJointIndex(y.boneIndex0),
(ushort)unityMesh.GetJointIndex(y.boneIndex1),
(ushort)unityMesh.GetJointIndex(y.boneIndex2),
(ushort)unityMesh.GetJointIndex(y.boneIndex3))
).ToArray(), glBufferTarget.ARRAY_BUFFER);
var attributes = new glTFAttributes
{
POSITION = positionAccessorIndex,
};
if (normalAccessorIndex != -1)
{
attributes.NORMAL = normalAccessorIndex;
}
if (tangentAccessorIndex.HasValue)
{
attributes.TANGENT = tangentAccessorIndex.Value;
}
if (uvAccessorIndex0 != -1)
{
attributes.TEXCOORD_0 = uvAccessorIndex0;
}
if (uvAccessorIndex1 != -1)
{
attributes.TEXCOORD_1 = uvAccessorIndex1;
}
if (colorAccessorIndex != -1)
{
attributes.COLOR_0 = colorAccessorIndex;
}
if (weightAccessorIndex != -1)
{
attributes.WEIGHTS_0 = weightAccessorIndex;
}
if (jointsAccessorIndex != -1)
{
attributes.JOINTS_0 = jointsAccessorIndex;
}
var gltfMesh = new glTFMesh(mesh.name);
var indices = new List <uint>();
for (int j = 0; j < mesh.subMeshCount; ++j)
{
indices.Clear();
var triangles = mesh.GetIndices(j);
if (triangles.Length == 0)
{
// https://github.com/vrm-c/UniVRM/issues/664
continue;
}
for (int i = 0; i < triangles.Length; i += 3)
{
var i0 = triangles[i];
var i1 = triangles[i + 1];
var i2 = triangles[i + 2];
// flip triangle
indices.Add((uint)i2);
indices.Add((uint)i1);
indices.Add((uint)i0);
}
var indicesAccessorIndex = data.ExtendBufferAndGetAccessorIndex(indices.ToArray(), glBufferTarget.ELEMENT_ARRAY_BUFFER);
if (indicesAccessorIndex < 0)
{
// https://github.com/vrm-c/UniVRM/issues/664
throw new Exception();
}
if (j >= materials.Length)
{
Debug.LogWarningFormat("{0}.materials is not enough", unityMesh.Mesh.name);
break;
}
gltfMesh.primitives.Add(new glTFPrimitives
{
attributes = attributes,
indices = indicesAccessorIndex,
mode = 4, // triangles ?
material = unityMaterials.IndexOf(materials[j])
});
}
var blendShapeIndexMap = new Dictionary <int, int>();
{
var targetNames = new List <string>();
int exportBlendShapes = 0;
for (int j = 0; j < unityMesh.Mesh.blendShapeCount; ++j)
{
var morphTarget = ExportMorphTarget(data,
unityMesh.Mesh, j,
settings.UseSparseAccessorForMorphTarget,
settings.ExportOnlyBlendShapePosition, axisInverter);
if (morphTarget.POSITION < 0)
{
// Skip empty blendShape.
// Shift blendShape's index.
continue;
}
var blendShapeName = unityMesh.Mesh.GetBlendShapeName(j);
blendShapeIndexMap.Add(j, exportBlendShapes++);
targetNames.Add(blendShapeName);
//
// all primitive has same blendShape
//
for (int k = 0; k < gltfMesh.primitives.Count; ++k)
{
gltfMesh.primitives[k].targets.Add(morphTarget);
}
}
gltf_mesh_extras_targetNames.Serialize(gltfMesh, targetNames);
}
return(gltfMesh, blendShapeIndexMap);
}
static MeshWithMaterials ImportMesh(glTF gltf, int meshIndex, glTFMesh gltfMesh,
List <Material> materials,
GetBlendShapeName getBlendShapeName
)
{
glTFAttributes lastAttributes = null;
var sharedAttributes = true;
foreach (var prim in gltfMesh.primitives)
{
if (lastAttributes != null && !prim.attributes.Equals(lastAttributes))
{
sharedAttributes = false;
break;
}
lastAttributes = prim.attributes;
}
var positions = new List <Vector3>();
var normals = new List <Vector3>();
var tangents = new List <Vector4>();
var colors = new List <Vector4>();
var uv = new List <Vector2>();
var boneWeights = new List <BoneWeight>();
var subMeshes = new List <int[]>();
var materialIndices = new List <int>();
BlendShape[] blendShapes = null;
if (sharedAttributes)
{
// multiple submesh sharing same VertexBuffer
{
var prim = gltfMesh.primitives.First();
positions.AddRange(gltf.GetArrayFromAccessor <Vector3>(prim.attributes.POSITION).Select(x => x.ReverseZ()));
// normal
if (prim.attributes.NORMAL != -1)
{
normals.AddRange(gltf.GetArrayFromAccessor <Vector3>(prim.attributes.NORMAL).Select(x => x.ReverseZ()));
}
// tangent
if (prim.attributes.TANGENT != -1)
{
tangents.AddRange(gltf.GetArrayFromAccessor <Vector4>(prim.attributes.TANGENT).Select(x => x.ReverseZ()));
}
// vertex color
if (prim.attributes.COLOR_0 != -1)
{
colors.AddRange(gltf.GetArrayFromAccessor <Vector4>(prim.attributes.COLOR_0));
}
// uv
if (prim.attributes.TEXCOORD_0 != -1)
{
uv.AddRange(gltf.GetArrayFromAccessor <Vector2>(prim.attributes.TEXCOORD_0).Select(x => x.ReverseY()));
}
else
{
// for inconsistent attributes in primitives
uv.AddRange(new Vector2[positions.Count]);
}
// skin
if (prim.attributes.JOINTS_0 != -1 && prim.attributes.WEIGHTS_0 != -1)
{
var joints0 = gltf.GetArrayFromAccessor <UShort4>(prim.attributes.JOINTS_0); // uint4
var weights0 = gltf.GetArrayFromAccessor <Float4>(prim.attributes.WEIGHTS_0).Select(x => x.One()).ToArray();
for (int j = 0; j < joints0.Length; ++j)
{
var bw = new BoneWeight();
bw.boneIndex0 = joints0[j].x;
bw.weight0 = weights0[j].x;
bw.boneIndex1 = joints0[j].y;
bw.weight1 = weights0[j].y;
bw.boneIndex2 = joints0[j].z;
bw.weight2 = weights0[j].z;
bw.boneIndex3 = joints0[j].w;
bw.weight3 = weights0[j].w;
boneWeights.Add(bw);
}
}
// blendshape
if (prim.targets != null && prim.targets.Count > 0)
{
if (blendShapes == null)
{
blendShapes = prim.targets.Select((x, i) => new BlendShape(getBlendShapeName(meshIndex, i))).ToArray();
}
for (int i = 0; i < prim.targets.Count; ++i)
{
//var name = string.Format("target{0}", i++);
var primTarget = prim.targets[i];
var blendShape = blendShapes[i];
if (primTarget.POSITION != -1)
{
blendShape.Positions.AddRange(
gltf.GetArrayFromAccessor <Vector3>(primTarget.POSITION).Select(x => x.ReverseZ()).ToArray());
}
if (primTarget.NORMAL != -1)
{
blendShape.Normals.AddRange(
gltf.GetArrayFromAccessor <Vector3>(primTarget.NORMAL).Select(x => x.ReverseZ()).ToArray());
}
if (primTarget.TANGENT != -1)
{
blendShape.Tangents.AddRange(
gltf.GetArrayFromAccessor <Vector3>(primTarget.TANGENT).Select(x => x.ReverseZ()).ToArray());
}
}
}
}
foreach (var prim in gltfMesh.primitives)
{
var indices = gltf.GetIndices(prim.indices).Select(x => x).ToArray();
subMeshes.Add(indices);
// material
materialIndices.Add(prim.material);
}
}
else
{
// multiple submMesh is not sharing a VertexBuffer.
// each subMesh use a independent VertexBuffer.
var targets = gltfMesh.primitives[0].targets;
for (int i = 1; i < gltfMesh.primitives.Count; ++i)
{
if (!gltfMesh.primitives[i].targets.SequenceEqual(targets))
{
throw new NotImplementedException(string.Format("diffirent targets: {0} with {1}",
gltfMesh.primitives[i],
targets));
}
}
foreach (var prim in gltfMesh.primitives)
{
var indexOffset = positions.Count;
var indexBuffer = prim.indices;
var positionCount = positions.Count;
positions.AddRange(gltf.GetArrayFromAccessor <Vector3>(prim.attributes.POSITION).Select(x => x.ReverseZ()));
positionCount = positions.Count - positionCount;
// normal
if (prim.attributes.NORMAL != -1)
{
normals.AddRange(gltf.GetArrayFromAccessor <Vector3>(prim.attributes.NORMAL).Select(x => x.ReverseZ()));
}
if (prim.attributes.TANGENT != -1)
{
tangents.AddRange(gltf.GetArrayFromAccessor <Vector4>(prim.attributes.TANGENT).Select(x => x.ReverseZ()));
}
// vertex color
if (prim.attributes.COLOR_0 != -1)
{
colors.AddRange(gltf.GetArrayFromAccessor <Vector4>(prim.attributes.COLOR_0));
}
// uv
if (prim.attributes.TEXCOORD_0 != -1)
{
uv.AddRange(gltf.GetArrayFromAccessor <Vector2>(prim.attributes.TEXCOORD_0).Select(x => x.ReverseY()));
}
else
{
// for inconsistent attributes in primitives
uv.AddRange(new Vector2[positionCount]);
}
// skin
if (prim.attributes.JOINTS_0 != -1 && prim.attributes.WEIGHTS_0 != -1)
{
var joints0 = gltf.GetArrayFromAccessor <UShort4>(prim.attributes.JOINTS_0); // uint4
var weights0 = gltf.GetArrayFromAccessor <Float4>(prim.attributes.WEIGHTS_0).Select(x => x.One()).ToArray();
for (int j = 0; j < joints0.Length; ++j)
{
var bw = new BoneWeight();
bw.boneIndex0 = joints0[j].x;
bw.weight0 = weights0[j].x;
bw.boneIndex1 = joints0[j].y;
bw.weight1 = weights0[j].y;
bw.boneIndex2 = joints0[j].z;
bw.weight2 = weights0[j].z;
bw.boneIndex3 = joints0[j].w;
bw.weight3 = weights0[j].w;
boneWeights.Add(bw);
}
}
// blendshape
if (prim.targets != null && prim.targets.Count > 0)
{
if (blendShapes == null)
{
blendShapes = prim.targets.Select((x, i) => new BlendShape(i.ToString())).ToArray();
}
for (int i = 0; i < prim.targets.Count; ++i)
{
//var name = string.Format("target{0}", i++);
var primTarget = prim.targets[i];
var blendShape = blendShapes[i];
if (primTarget.POSITION != -1)
{
blendShape.Positions.AddRange(
gltf.GetArrayFromAccessor <Vector3>(primTarget.POSITION).Select(x => x.ReverseZ()).ToArray());
}
if (primTarget.NORMAL != -1)
{
blendShape.Normals.AddRange(
gltf.GetArrayFromAccessor <Vector3>(primTarget.NORMAL).Select(x => x.ReverseZ()).ToArray());
}
if (primTarget.TANGENT != -1)
{
blendShape.Tangents.AddRange(
gltf.GetArrayFromAccessor <Vector3>(primTarget.TANGENT).Select(x => x.ReverseZ()).ToArray());
}
}
}
var indices =
(indexBuffer >= 0)
? gltf.GetIndices(indexBuffer).Select(x => x + indexOffset).ToArray()
: TriangleUtil.FlipTriangle(Enumerable.Range(0, positions.Count)).ToArray() // without index array
;
subMeshes.Add(indices);
// material
materialIndices.Add(prim.material);
}
}
if (!materialIndices.Any())
{
materialIndices.Add(0);
}
//Debug.Log(prims.ToJson());
var mesh = new Mesh();
mesh.name = gltfMesh.name;
if (positions.Count > UInt16.MaxValue)
{
#if UNITY_2017_3_OR_NEWER
mesh.indexFormat = UnityEngine.Rendering.IndexFormat.UInt32;
#else
Debug.LogWarningFormat("vertices {0} exceed 65535. not implemented. Unity2017.3 supports large mesh", positions.Count);
#endif
}
mesh.vertices = positions.ToArray();
if (normals.Any())
{
mesh.normals = normals.ToArray();
}
else
{
mesh.RecalculateNormals();
}
if (tangents.Any())
{
mesh.tangents = tangents.ToArray();
}
else
{
mesh.RecalculateTangents();
}
if (colors.Any())
{
mesh.colors = colors.ConvertAll(x => new Color(x.x, x.y, x.z, 1f)).ToArray();
}
if (uv.Any())
{
mesh.uv = uv.ToArray();
}
if (boneWeights.Any())
{
mesh.boneWeights = boneWeights.ToArray();
}
mesh.subMeshCount = subMeshes.Count;
for (int i = 0; i < subMeshes.Count; ++i)
{
mesh.SetTriangles(subMeshes[i], i);
}
var result = new MeshWithMaterials
{
Mesh = mesh,
Materials = materialIndices.Select(x => materials[x]).ToArray()
};
List <Material> matList = result.Materials.ToList();
matList.RemoveAll(x => x == null);
result.Materials = matList.ToArray();
if (blendShapes != null)
{
foreach (var blendShape in blendShapes)
{
if (blendShape.Positions.Count > 0)
{
if (blendShape.Positions.Count == mesh.vertexCount)
{
mesh.AddBlendShapeFrame(blendShape.Name, FRAME_WEIGHT,
blendShape.Positions.ToArray(),
normals.Count == mesh.vertexCount ? blendShape.Normals.ToArray() : null,
null
);
}
else
{
Debug.LogWarningFormat("May be partial primitive has blendShape. Rquire separete mesh or extend blend shape, but not implemented: {0}", blendShape.Name);
}
}
}
}
return(result);
}
