protected Mesh readPrimitive(GltfMeshPrimitive p, out Material material)
{
Mesh mesh = new Mesh();
foreach (KeyValuePair <string, int> att in p.Attributes)
{
switch (att.Key)
{
case "POSITION":
mesh.Vertices = readXYZ(_root.Accessors[att.Value]);
break;
case "NORMAL":
//TODO: Fix the gltf normal reading
//var normals = new LayerElementNormal(mesh);
//normals.Normals = readXYZ(_root.Accessors[att.Value]); //.Select(x => -x).ToList();
//normals.MappingInformationType = MappingMode.ByPolygon;
//normals.ReferenceInformationType = ReferenceMode.Direct;
//mesh.Layers.Add(normals);
break;
case "TANGENT":
case "TEXCOORD_0":
case "TEXCOORD_1":
case "COLOR_0":
case "JOINTS_0":
case "WEIGHTS_0":
break;
default:
throw new Exception();
}
}
if (p.Indices.HasValue)
{
mesh.Polygons.AddRange(readIndices(_root.Accessors[p.Indices.Value], p.Mode));
//Add missing layers
//TODO: Fix the gltf normal reading
//var normals = new LayerElementNormal(mesh);
//normals.CalculateFlatNormals();
//mesh.Layers.Add(normals);
}
if (p.Material.HasValue)
{
material = readMaterial(p.Material.Value);
mesh.Layers.Add(new LayerElementMaterial(mesh));
}
else
{
material = null;
}
return(mesh);
}
private static async Task <Mesh> ConstructMeshPrimitiveAsync(GltfObject gltfObject, GltfMeshPrimitive meshPrimitive)
{
if (Application.isPlaying)
{
await BackgroundThread;
}
GltfAccessor positionAccessor = null;
GltfAccessor normalsAccessor = null;
GltfAccessor textCoord0Accessor = null;
GltfAccessor textCoord1Accessor = null;
GltfAccessor textCoord2Accessor = null;
GltfAccessor textCoord3Accessor = null;
GltfAccessor colorAccessor = null;
GltfAccessor indicesAccessor = null;
GltfAccessor tangentAccessor = null;
GltfAccessor weight0Accessor = null;
GltfAccessor joint0Accessor = null;
int vertexCount = 0;
if (meshPrimitive.Attributes.POSITION >= 0)
{
positionAccessor = gltfObject.accessors[meshPrimitive.Attributes.POSITION];
positionAccessor.BufferView = gltfObject.bufferViews[positionAccessor.bufferView];
positionAccessor.BufferView.Buffer = gltfObject.buffers[positionAccessor.BufferView.buffer];
vertexCount = positionAccessor.count;
}
if (meshPrimitive.Attributes.NORMAL >= 0)
{
normalsAccessor = gltfObject.accessors[meshPrimitive.Attributes.NORMAL];
normalsAccessor.BufferView = gltfObject.bufferViews[normalsAccessor.bufferView];
normalsAccessor.BufferView.Buffer = gltfObject.buffers[normalsAccessor.BufferView.buffer];
}
if (meshPrimitive.Attributes.TEXCOORD_0 >= 0)
{
textCoord0Accessor = gltfObject.accessors[meshPrimitive.Attributes.TEXCOORD_0];
textCoord0Accessor.BufferView = gltfObject.bufferViews[textCoord0Accessor.bufferView];
textCoord0Accessor.BufferView.Buffer = gltfObject.buffers[textCoord0Accessor.BufferView.buffer];
}
if (meshPrimitive.Attributes.TEXCOORD_1 >= 0)
{
textCoord1Accessor = gltfObject.accessors[meshPrimitive.Attributes.TEXCOORD_1];
textCoord1Accessor.BufferView = gltfObject.bufferViews[textCoord1Accessor.bufferView];
textCoord1Accessor.BufferView.Buffer = gltfObject.buffers[textCoord1Accessor.BufferView.buffer];
}
if (meshPrimitive.Attributes.TEXCOORD_2 >= 0)
{
textCoord2Accessor = gltfObject.accessors[meshPrimitive.Attributes.TEXCOORD_2];
textCoord2Accessor.BufferView = gltfObject.bufferViews[textCoord2Accessor.bufferView];
textCoord2Accessor.BufferView.Buffer = gltfObject.buffers[textCoord2Accessor.BufferView.buffer];
}
if (meshPrimitive.Attributes.TEXCOORD_3 >= 0)
{
textCoord3Accessor = gltfObject.accessors[meshPrimitive.Attributes.TEXCOORD_3];
textCoord3Accessor.BufferView = gltfObject.bufferViews[textCoord3Accessor.bufferView];
textCoord3Accessor.BufferView.Buffer = gltfObject.buffers[textCoord3Accessor.BufferView.buffer];
}
if (meshPrimitive.Attributes.COLOR_0 >= 0)
{
colorAccessor = gltfObject.accessors[meshPrimitive.Attributes.COLOR_0];
colorAccessor.BufferView = gltfObject.bufferViews[colorAccessor.bufferView];
colorAccessor.BufferView.Buffer = gltfObject.buffers[colorAccessor.BufferView.buffer];
}
if (meshPrimitive.indices >= 0)
{
indicesAccessor = gltfObject.accessors[meshPrimitive.indices];
indicesAccessor.BufferView = gltfObject.bufferViews[indicesAccessor.bufferView];
indicesAccessor.BufferView.Buffer = gltfObject.buffers[indicesAccessor.BufferView.buffer];
}
if (meshPrimitive.Attributes.TANGENT >= 0)
{
tangentAccessor = gltfObject.accessors[meshPrimitive.Attributes.TANGENT];
tangentAccessor.BufferView = gltfObject.bufferViews[tangentAccessor.bufferView];
tangentAccessor.BufferView.Buffer = gltfObject.buffers[tangentAccessor.BufferView.buffer];
}
if (meshPrimitive.Attributes.WEIGHTS_0 >= 0)
{
weight0Accessor = gltfObject.accessors[meshPrimitive.Attributes.WEIGHTS_0];
weight0Accessor.BufferView = gltfObject.bufferViews[weight0Accessor.bufferView];
weight0Accessor.BufferView.Buffer = gltfObject.buffers[weight0Accessor.BufferView.buffer];
}
if (meshPrimitive.Attributes.JOINTS_0 >= 0)
{
joint0Accessor = gltfObject.accessors[meshPrimitive.Attributes.JOINTS_0];
joint0Accessor.BufferView = gltfObject.bufferViews[joint0Accessor.bufferView];
joint0Accessor.BufferView.Buffer = gltfObject.buffers[joint0Accessor.BufferView.buffer];
}
if (Application.isPlaying)
{
await Update;
}
var mesh = new Mesh
{
indexFormat = vertexCount > 65535 ? IndexFormat.UInt32 : IndexFormat.UInt16,
};
if (positionAccessor != null)
{
mesh.vertices = await positionAccessor.GetVector3Array();
}
if (normalsAccessor != null)
{
mesh.normals = await normalsAccessor.GetVector3Array();
}
if (textCoord0Accessor != null)
{
mesh.uv = await textCoord0Accessor.GetVector2Array();
}
if (textCoord1Accessor != null)
{
mesh.uv2 = await textCoord1Accessor.GetVector2Array();
}
if (textCoord2Accessor != null)
{
mesh.uv3 = await textCoord2Accessor.GetVector2Array();
}
if (textCoord3Accessor != null)
{
mesh.uv4 = await textCoord3Accessor.GetVector2Array();
}
if (colorAccessor != null)
{
mesh.colors = await colorAccessor.GetColorArray();
}
if (indicesAccessor != null)
{
mesh.triangles = await indicesAccessor.GetIntArray();
}
if (tangentAccessor != null)
{
mesh.tangents = await tangentAccessor.GetVector4Array();
}
if (weight0Accessor != null && joint0Accessor != null)
{
mesh.boneWeights = CreateBoneWeightArray(await joint0Accessor.GetVector4Array(false), await weight0Accessor.GetVector4Array(false), vertexCount);
}
mesh.RecalculateBounds();
meshPrimitive.SubMesh = mesh;
return(mesh);
}
private static async Task <Mesh> ConstructMeshPrimitiveAsync(GltfObject gltfObject, GltfMeshPrimitive meshPrimitive)
{
if (gltfObject.UseBackgroundThread)
{
await BackgroundThread;
}
GltfAccessor positionAccessor = null;
GltfAccessor normalsAccessor = null;
GltfAccessor textCoord0Accessor = null;
GltfAccessor textCoord1Accessor = null;
GltfAccessor textCoord2Accessor = null;
GltfAccessor textCoord3Accessor = null;
GltfAccessor colorAccessor = null;
GltfAccessor indicesAccessor = null;
GltfAccessor tangentAccessor = null;
GltfAccessor weight0Accessor = null;
GltfAccessor joint0Accessor = null;
int vertexCount = 0;
positionAccessor = gltfObject.GetAccessor(meshPrimitive.Attributes.POSITION);
if (positionAccessor != null)
{
vertexCount = positionAccessor.count;
}
normalsAccessor = gltfObject.GetAccessor(meshPrimitive.Attributes.NORMAL);
textCoord0Accessor = gltfObject.GetAccessor(meshPrimitive.Attributes.TEXCOORD_0);
textCoord1Accessor = gltfObject.GetAccessor(meshPrimitive.Attributes.TEXCOORD_1);
textCoord2Accessor = gltfObject.GetAccessor(meshPrimitive.Attributes.TEXCOORD_2);
textCoord3Accessor = gltfObject.GetAccessor(meshPrimitive.Attributes.TEXCOORD_3);
colorAccessor = gltfObject.GetAccessor(meshPrimitive.Attributes.COLOR_0);
indicesAccessor = gltfObject.GetAccessor(meshPrimitive.indices);
tangentAccessor = gltfObject.GetAccessor(meshPrimitive.Attributes.TANGENT);
weight0Accessor = gltfObject.GetAccessor(meshPrimitive.Attributes.WEIGHTS_0);
joint0Accessor = gltfObject.GetAccessor(meshPrimitive.Attributes.JOINTS_0);
if (gltfObject.UseBackgroundThread)
{
await Update;
}
var mesh = new Mesh
{
indexFormat = vertexCount > UInt16.MaxValue ? IndexFormat.UInt32 : IndexFormat.UInt16,
};
if (positionAccessor != null)
{
mesh.vertices = positionAccessor.GetVector3Array();
}
if (normalsAccessor != null)
{
mesh.normals = normalsAccessor.GetVector3Array();
}
if (textCoord0Accessor != null)
{
mesh.uv = textCoord0Accessor.GetVector2Array();
}
if (textCoord1Accessor != null)
{
mesh.uv2 = textCoord1Accessor.GetVector2Array();
}
if (textCoord2Accessor != null)
{
mesh.uv3 = textCoord2Accessor.GetVector2Array();
}
if (textCoord3Accessor != null)
{
mesh.uv4 = textCoord3Accessor.GetVector2Array();
}
if (colorAccessor != null)
{
mesh.colors = colorAccessor.GetColorArray();
}
if (indicesAccessor != null)
{
mesh.triangles = indicesAccessor.GetIntArray();
}
if (tangentAccessor != null)
{
mesh.tangents = tangentAccessor.GetVector4Array();
}
if (weight0Accessor != null && joint0Accessor != null)
{
mesh.boneWeights = CreateBoneWeightArray(joint0Accessor.GetVector4Array(false), weight0Accessor.GetVector4Array(false), vertexCount);
}
mesh.RecalculateBounds();
meshPrimitive.SubMesh = mesh;
return(mesh);
}
private static Mesh ConstructMeshPrimitive(GltfObject gltfObject, GltfMeshPrimitive meshPrimitive)
{
GltfAccessor positionAccessor = null;
GltfAccessor normalsAccessor = null;
GltfAccessor textCoord0Accessor = null;
GltfAccessor textCoord1Accessor = null;
GltfAccessor textCoord2Accessor = null;
GltfAccessor textCoord3Accessor = null;
GltfAccessor colorAccessor = null;
GltfAccessor indicesAccessor = null;
GltfAccessor tangentAccessor = null;
GltfAccessor weight0Accessor = null;
GltfAccessor joint0Accessor = null;
int vertexCount = 0;
if (meshPrimitive.Attributes.POSITION >= 0)
{
positionAccessor = gltfObject.accessors[meshPrimitive.Attributes.POSITION];
positionAccessor.BufferView = gltfObject.bufferViews[positionAccessor.bufferView];
positionAccessor.BufferView.Buffer = gltfObject.buffers[positionAccessor.BufferView.buffer];
vertexCount = positionAccessor.count;
}
if (meshPrimitive.Attributes.NORMAL >= 0)
{
normalsAccessor = gltfObject.accessors[meshPrimitive.Attributes.NORMAL];
normalsAccessor.BufferView = gltfObject.bufferViews[normalsAccessor.bufferView];
normalsAccessor.BufferView.Buffer = gltfObject.buffers[normalsAccessor.BufferView.buffer];
}
if (meshPrimitive.Attributes.TEXCOORD_0 >= 0)
{
textCoord0Accessor = gltfObject.accessors[meshPrimitive.Attributes.TEXCOORD_0];
textCoord0Accessor.BufferView = gltfObject.bufferViews[textCoord0Accessor.bufferView];
textCoord0Accessor.BufferView.Buffer = gltfObject.buffers[textCoord0Accessor.BufferView.buffer];
}
if (meshPrimitive.Attributes.TEXCOORD_1 >= 0)
{
textCoord1Accessor = gltfObject.accessors[meshPrimitive.Attributes.TEXCOORD_1];
textCoord1Accessor.BufferView = gltfObject.bufferViews[textCoord1Accessor.bufferView];
textCoord1Accessor.BufferView.Buffer = gltfObject.buffers[textCoord1Accessor.BufferView.buffer];
}
if (meshPrimitive.Attributes.TEXCOORD_2 >= 0)
{
textCoord2Accessor = gltfObject.accessors[meshPrimitive.Attributes.TEXCOORD_2];
textCoord2Accessor.BufferView = gltfObject.bufferViews[textCoord2Accessor.bufferView];
textCoord2Accessor.BufferView.Buffer = gltfObject.buffers[textCoord2Accessor.BufferView.buffer];
}
if (meshPrimitive.Attributes.TEXCOORD_3 >= 0)
{
textCoord3Accessor = gltfObject.accessors[meshPrimitive.Attributes.TEXCOORD_3];
textCoord3Accessor.BufferView = gltfObject.bufferViews[textCoord3Accessor.bufferView];
textCoord3Accessor.BufferView.Buffer = gltfObject.buffers[textCoord3Accessor.BufferView.buffer];
}
if (meshPrimitive.Attributes.COLOR_0 >= 0)
{
colorAccessor = gltfObject.accessors[meshPrimitive.Attributes.COLOR_0];
colorAccessor.BufferView = gltfObject.bufferViews[colorAccessor.bufferView];
colorAccessor.BufferView.Buffer = gltfObject.buffers[colorAccessor.BufferView.buffer];
}
if (meshPrimitive.indices >= 0)
{
indicesAccessor = gltfObject.accessors[meshPrimitive.indices];
indicesAccessor.BufferView = gltfObject.bufferViews[indicesAccessor.bufferView];
indicesAccessor.BufferView.Buffer = gltfObject.buffers[indicesAccessor.BufferView.buffer];
}
if (meshPrimitive.Attributes.TANGENT >= 0)
{
tangentAccessor = gltfObject.accessors[meshPrimitive.Attributes.TANGENT];
tangentAccessor.BufferView = gltfObject.bufferViews[tangentAccessor.bufferView];
tangentAccessor.BufferView.Buffer = gltfObject.buffers[tangentAccessor.BufferView.buffer];
}
if (meshPrimitive.Attributes.WEIGHTS_0 >= 0)
{
weight0Accessor = gltfObject.accessors[meshPrimitive.Attributes.WEIGHTS_0];
weight0Accessor.BufferView = gltfObject.bufferViews[weight0Accessor.bufferView];
weight0Accessor.BufferView.Buffer = gltfObject.buffers[weight0Accessor.BufferView.buffer];
}
if (meshPrimitive.Attributes.JOINTS_0 >= 0)
{
joint0Accessor = gltfObject.accessors[meshPrimitive.Attributes.JOINTS_0];
joint0Accessor.BufferView = gltfObject.bufferViews[joint0Accessor.bufferView];
joint0Accessor.BufferView.Buffer = gltfObject.buffers[joint0Accessor.BufferView.buffer];
}
var mesh = new Mesh
{
indexFormat = vertexCount > 65535 ? IndexFormat.UInt32 : IndexFormat.UInt16,
vertices = positionAccessor?.GetVector3Array(),
normals = normalsAccessor?.GetVector3Array(),
uv = textCoord0Accessor?.GetVector2Array(),
uv2 = textCoord1Accessor?.GetVector2Array(),
uv3 = textCoord2Accessor?.GetVector2Array(),
uv4 = textCoord3Accessor?.GetVector2Array(),
colors = colorAccessor?.GetColorArray(),
triangles = indicesAccessor?.GetIntArray(),
tangents = tangentAccessor?.GetVector4Array()
};
if (weight0Accessor != null && joint0Accessor != null)
{
mesh.boneWeights = CreateBoneWeightArray(joint0Accessor.GetVector4Array(false), weight0Accessor.GetVector4Array(false), vertexCount);
}
mesh.RecalculateBounds();
return(mesh);
}
private static void AppendToGroup(Dictionary <GltfInstancedGroupKey, GltfInstanceDrawGroup> instanceDrawGroups, GltfNodeInfo node, int meshIndex, GltfMeshPrimitive primitive, EffectVariantKey key, EffectVariant found)
{
var groupKey = new GltfInstancedGroupKey
{
MeshIndex = meshIndex,
CameraSlotIndex = 0,
TextureSlotIndex = 0,
MaterialSlotIndex = primitive.Material.StorageIndex,
VariantKey = key,
};
if (!instanceDrawGroups.TryGetValue(groupKey, out GltfInstanceDrawGroup drawGroup))
{
drawGroup = new GltfInstanceDrawGroup
{
GroupKey = groupKey,
Variant = found,
Members = new List <GltfInstancedDraw>(),
};
instanceDrawGroups.Add(groupKey, drawGroup);
}
var instancedDraw = new GltfInstancedDraw
{
Key = key,
GroupKey = groupKey,
Instance = new PerInstance
{
Translation = node.Transform.ExtractTranslation(),
Scale = node.Transform.ExtractScale(),
Rotation = node.Transform.ExtractRotation(true), // TODO
MaterialIndex = primitive.Material.Offset,
},
};
drawGroup.Members.Add(instancedDraw);
}
