public void Export(GameObject root, Model model, ModelExporter converter, ExportArgs option, gltfExporter.GetBytesWithMimeFromTexture2D getTextureBytes, VRM10MetaObject metaObject = null)
{
ExportAsset(model);
///
/// 必要な容量を先に確保
/// (sparseは考慮してないので大きめ)
///
{
var reserveBytes = 0;
// mesh
foreach (var g in model.MeshGroups)
{
foreach (var mesh in g.Meshes)
{
// 頂点バッファ
reserveBytes += mesh.IndexBuffer.ByteLength;
foreach (var kv in mesh.VertexBuffer)
{
reserveBytes += kv.Value.ByteLength;
}
// morph
foreach (var morph in mesh.MorphTargets)
{
foreach (var kv in morph.VertexBuffer)
{
reserveBytes += kv.Value.ByteLength;
}
}
}
}
Reserve(reserveBytes);
}
// material
var materialExporter = new Vrm10MaterialExporter();
foreach (Material material in model.Materials)
{
var glTFMaterial = materialExporter.ExportMaterial(material, m_textureExporter);
Storage.Gltf.materials.Add(glTFMaterial);
}
// mesh
ExportMeshes(model.MeshGroups, model.Materials, option);
// node
ExportNodes(model.Root, model.Nodes, model.MeshGroups, option);
var(vrm, vrmSpringBone, thumbnailTextureIndex) = ExportVrm(root, model, converter, metaObject);
// Extension で Texture が増える場合があるので最後に呼ぶ
for (int i = 0; i < m_textureExporter.Exported.Count; ++i)
{
var(unityTexture, texColorSpace) = m_textureExporter.Exported[i];
Storage.Gltf.PushGltfTexture(0, unityTexture, texColorSpace, getTextureBytes);
}
if (thumbnailTextureIndex.HasValue)
{
vrm.Meta.ThumbnailImage = Storage.Gltf.textures[thumbnailTextureIndex.Value].source;
}
UniGLTF.Extensions.VRMC_vrm.GltfSerializer.SerializeTo(ref Storage.Gltf.extensions, vrm);
if (vrmSpringBone != null)
{
UniGLTF.Extensions.VRMC_springBone.GltfSerializer.SerializeTo(ref Storage.Gltf.extensions, vrmSpringBone);
}
}
/// <summary>
/// gltf に texture を足す
///
/// * textures
/// * samplers
/// * images
/// * bufferViews
///
/// を更新し、textures の index を返す
///
/// </summary>
/// <param name="gltf"></param>
/// <param name="bufferIndex"></param>
/// <param name="texture"></param>
/// <returns>gltf texture index</returns>
public static int PushGltfTexture(this glTF gltf, int bufferIndex, Texture2D texture, ColorSpace textureColorSpace, gltfExporter.GetBytesWithMimeFromTexture2D getTextureBytes)
{
var bytesWithMime = getTextureBytes(texture, textureColorSpace);
// add view
var view = gltf.buffers[bufferIndex].Append(bytesWithMime.bytes, glBufferTarget.NONE);
var viewIndex = gltf.AddBufferView(view);
// add image
var imageIndex = gltf.images.Count;
gltf.images.Add(new glTFImage
{
name = TextureImportName.RemoveSuffix(texture.name),
bufferView = viewIndex,
mimeType = bytesWithMime.mime,
});
// add sampler
var samplerIndex = gltf.samplers.Count;
var sampler = TextureSamplerUtil.Export(texture);
gltf.samplers.Add(sampler);
// add texture
var textureIndex = gltf.textures.Count;
gltf.textures.Add(new glTFTexture
{
sampler = samplerIndex,
source = imageIndex,
});
return(textureIndex);
}
