internal MyVertexFormatTexcoordNormalTangent(Vector2 texcoord, Vector3 normal, Vector3 tangent)
{
Texcoord = new HalfVector2(texcoord.X, texcoord.Y);
Normal = VF_Packer.PackNormalB4(ref normal);
Vector4 T = new Vector4(tangent, 1);
Tangent = VF_Packer.PackTangentSignB4(ref T);
}
// the functionality is not clear to me, the code is legacy from the old pipeline
Byte4[] CreateAlteredTangents(Byte4[] normals, Byte4[] tangents, Byte4[] bitangents)
{
int verticesNum = tangents.Length;
var alteredTangents = new Byte4[verticesNum];
if (tangents.Length > 0 && bitangents.Length > 0)
{
MyRenderProxy.Assert(normals.Length == tangents.Length && normals.Length == bitangents.Length);
// calculate tangents used by run-time
for (int i = 0; i < verticesNum; i++)
{
var N = VF_Packer.UnpackNormal(normals[i].PackedValue);
var T = VF_Packer.UnpackNormal(tangents[i].PackedValue);
var B = VF_Packer.UnpackNormal(bitangents[i].PackedValue);
var tanW = new Vector4(T.X, T.Y, T.Z, 0);
tanW.W = T.Cross(N).Dot(B) < 0 ? -1 : 1;
alteredTangents[i] = VF_Packer.PackTangentSignB4(ref tanW);
}
}
return(alteredTangents);
}
MyRenderMeshInfo LoadMesh(string assetName, out MyLODDescriptor[] LodDescriptors)
{
//Debug.Assert(assetName.EndsWith(".mwm"));
#region Temporary for mwm endings
if (!assetName.EndsWith(".mwm"))
{
assetName += ".mwm";
}
#endregion
var meshVertexInput = MyVertexInputLayout.Empty;
LodDescriptors = null;
MyRenderMeshInfo result = new MyRenderMeshInfo();
var importer = new MyModelImporter();
var fsPath = Path.IsPathRooted(assetName) ? assetName : Path.Combine(MyFileSystem.ContentPath, assetName);
if (!MyFileSystem.FileExists(fsPath))
{
System.Diagnostics.Debug.Fail("Model " + assetName + " does not exists!");
return(MyAssetsLoader.GetDebugMesh().LODs[0].m_meshInfo);
}
string contentPath = null;
if (Path.IsPathRooted(assetName) && assetName.ToLower().Contains("models"))
{
contentPath = assetName.Substring(0, assetName.ToLower().IndexOf("models"));
}
try
{
importer.ImportData(fsPath, new string[]
{
MyImporterConstants.TAG_VERTICES,
MyImporterConstants.TAG_BLENDINDICES,
MyImporterConstants.TAG_BLENDWEIGHTS,
MyImporterConstants.TAG_NORMALS,
MyImporterConstants.TAG_TEXCOORDS0,
MyImporterConstants.TAG_TANGENTS,
MyImporterConstants.TAG_BINORMALS,
MyImporterConstants.TAG_BONES,
MyImporterConstants.TAG_MESH_PARTS,
MyImporterConstants.TAG_BOUNDING_BOX,
MyImporterConstants.TAG_BOUNDING_SPHERE,
MyImporterConstants.TAG_LODS,
});
Dictionary <string, object> tagData = importer.GetTagData();
// extract data
var positions = (HalfVector4[])tagData[MyImporterConstants.TAG_VERTICES];
System.Diagnostics.Debug.Assert(positions.Length > 0);
var verticesNum = positions.Length;
var boneIndices = (Vector4I[])tagData[MyImporterConstants.TAG_BLENDINDICES];
var boneWeights = (Vector4[])tagData[MyImporterConstants.TAG_BLENDWEIGHTS];
var normals = (Byte4[])tagData[MyImporterConstants.TAG_NORMALS];
var texcoords = (HalfVector2[])tagData[MyImporterConstants.TAG_TEXCOORDS0];
var tangents = (Byte4[])tagData[MyImporterConstants.TAG_TANGENTS];
var bintangents = (Byte4[])tagData[MyImporterConstants.TAG_BINORMALS];
var tangentBitanSgn = new Byte4[verticesNum];
for (int i = 0; i < verticesNum; i++)
{
var N = VF_Packer.UnpackNormal(normals[i].PackedValue);
var T = VF_Packer.UnpackNormal(tangents[i].PackedValue);
var B = VF_Packer.UnpackNormal(bintangents[i].PackedValue);
var tanW = new Vector4(T.X, T.Y, T.Z, 0);
tanW.W = T.Cross(N).Dot(B) < 0 ? -1 : 1;
tangentBitanSgn[i] = VF_Packer.PackTangentSignB4(ref tanW);
}
bool hasBonesInfo = false;
if (boneIndices.Length > 0 && boneWeights.Length > 0)
{
hasBonesInfo = true;
}
var bones = (MyModelBone[])tagData[MyImporterConstants.TAG_BONES];
//
var vertexBuffers = new List <VertexBufferId>();
IndexBufferId indexBuffer = IndexBufferId.NULL;
var submeshes = new Dictionary <string, List <MyDrawSubmesh> >();
var submeshes2 = new Dictionary <string, List <MySubmeshInfo> >();
var submeshesMeta = new List <MySubmeshInfo>();
int indicesNum = 0;
bool missingMaterial = false;
if (tagData.ContainsKey(MyImporterConstants.TAG_MESH_PARTS))
{
var indices = new List <uint>(positions.Length);
uint maxIndex = 0;
var meshParts = tagData[MyImporterConstants.TAG_MESH_PARTS] as List <MyMeshPartInfo>;
foreach (MyMeshPartInfo meshPart in meshParts)
{
# region Bones indirection
int[] bonesRemapping = null;
if (boneIndices.Length > 0 && bones.Length > MyRender11Constants.SHADER_MAX_BONES)
{
Dictionary <int, int> vertexChanged = new Dictionary <int, int>();
Dictionary <int, int> bonesUsed = new Dictionary <int, int>();
int trianglesNum = meshPart.m_indices.Count / 3;
for (int i = 0; i < trianglesNum; i++)
{
for (int j = 0; j < 3; j++)
{
int index = meshPart.m_indices[i * 3 + j];
if (boneWeights[index].X > 0)
{
bonesUsed[boneIndices[index].X] = 1;
}
if (boneWeights[index].Y > 0)
{
bonesUsed[boneIndices[index].Y] = 1;
}
if (boneWeights[index].Z > 0)
{
bonesUsed[boneIndices[index].Z] = 1;
}
if (boneWeights[index].W > 0)
{
bonesUsed[boneIndices[index].W] = 1;
}
}
}
if (bonesUsed.Count > MyRender11Constants.SHADER_MAX_BONES)
{
Debug.Assert(bonesUsed.Count <= MyRender11Constants.SHADER_MAX_BONES, "Model \"" + assetName + "\"'s part uses more than 60 bones, please split model on more parts");
}
var partBones = new List <int>(bonesUsed.Keys);
partBones.Sort();
if (partBones.Count > 0 && partBones[partBones.Count - 1] >= MyRender11Constants.SHADER_MAX_BONES)
{
for (int i = 0; i < partBones.Count; i++)
{
bonesUsed[partBones[i]] = i;
}
Dictionary <int, int> vertexTouched = new Dictionary <int, int>();
for (int i = 0; i < trianglesNum; i++)
{
for (int j = 0; j < 3; j++)
{
int index = meshPart.m_indices[i * 3 + j];
if (!vertexTouched.ContainsKey(index))
{
if (boneWeights[index].X > 0)
{
boneIndices[index].X = bonesUsed[boneIndices[index].X];
}
if (boneWeights[index].Y > 0)
{
boneIndices[index].Y = bonesUsed[boneIndices[index].Y];
}
if (boneWeights[index].Z > 0)
{
boneIndices[index].Z = bonesUsed[boneIndices[index].Z];
}
if (boneWeights[index].W > 0)
{
boneIndices[index].W = bonesUsed[boneIndices[index].W];
}
vertexTouched[index] = 1;
int changes = 0;
vertexChanged.TryGetValue(index, out changes);
vertexChanged[index] = changes + 1;
}
}
}
bonesRemapping = partBones.ToArray();
}
if (vertexChanged.Values.Count > 0)
{
Debug.Assert(vertexChanged.Values.Max() < 2, "Vertex shared between model parts, will likely result in wrong skinning");
}
}
#endregion
int startIndex = indices.Count;
int indexCount = meshPart.m_indices.Count;
uint minIndex = (uint)meshPart.m_indices[0];
foreach (var i in meshPart.m_indices)
{
indices.Add((uint)i);
minIndex = Math.Min(minIndex, (uint)i);
}
uint baseVertex = minIndex;
for (int i = startIndex; i < startIndex + indexCount; i++)
{
indices[i] -= minIndex;
maxIndex = Math.Max(maxIndex, indices[i]);
}
#region Material
var materialDesc = meshPart.m_MaterialDesc;
var matId = MyMeshMaterials1.GetMaterialId(materialDesc, contentPath);
var partKey = MyMeshMaterials1.Table[matId.Index].Technique;
var materialName = MyMeshMaterials1.Table[matId.Index].Name;
var list = submeshes.SetDefault(partKey, new List <MyDrawSubmesh>());
list.Add(new MyDrawSubmesh(indexCount, startIndex, (int)baseVertex, MyMeshMaterials1.GetProxyId(matId), bonesRemapping));
submeshesMeta.Add(new MySubmeshInfo
{
IndexCount = indexCount,
StartIndex = startIndex,
BaseVertex = (int)baseVertex,
BonesMapping = bonesRemapping,
Material = materialName.ToString(),
Technique = partKey
});
var list2 = submeshes2.SetDefault(partKey, new List <MySubmeshInfo>());
list2.Add(submeshesMeta[submeshesMeta.Count - 1]);
#endregion
}
indicesNum = indices.Count;
#region Fill gpu buffes
unsafe
{
if (maxIndex <= ushort.MaxValue)
{
// create 16 bit indices
var indices16 = new ushort[indices.Count];
for (int i = 0; i < indices.Count; i++)
{
indices16[i] = (ushort)indices[i];
}
result.Indices = indices16;
fixed(ushort *I = indices16)
{
indexBuffer = MyHwBuffers.CreateIndexBuffer(indices16.Length, Format.R16_UInt, BindFlags.IndexBuffer, ResourceUsage.Immutable, new IntPtr(I), assetName + " index buffer");
}
}
else
{
var indicesArray = indices.ToArray();
fixed(uint *I = indicesArray)
{
indexBuffer = MyHwBuffers.CreateIndexBuffer(indices.Count, Format.R32_UInt, BindFlags.IndexBuffer, ResourceUsage.Immutable, new IntPtr(I), assetName + " index buffer");
}
}
}
unsafe
{
if (!hasBonesInfo)
{
var vertices = new MyVertexFormatPositionH4[verticesNum];
for (int i = 0; i < verticesNum; i++)
{
vertices[i] = new MyVertexFormatPositionH4(positions[i]);
}
meshVertexInput = meshVertexInput.Append(MyVertexInputComponentType.POSITION_PACKED);
result.VertexPositions = vertices;
fixed(MyVertexFormatPositionH4 *V = vertices)
{
vertexBuffers.Add(MyHwBuffers.CreateVertexBuffer(verticesNum, sizeof(MyVertexFormatPositionH4), BindFlags.VertexBuffer, ResourceUsage.Immutable, new IntPtr(V), assetName + " vertex buffer " + vertexBuffers.Count));
}
}
else
{
var vertices = new MyVertexFormatPositionSkinning[verticesNum];
for (int i = 0; i < verticesNum; i++)
{
vertices[i] = new MyVertexFormatPositionSkinning(
positions[i],
new Byte4(boneIndices[i].X, boneIndices[i].Y, boneIndices[i].Z, boneIndices[i].W),
boneWeights[i]);
}
meshVertexInput = meshVertexInput.Append(MyVertexInputComponentType.POSITION_PACKED)
.Append(MyVertexInputComponentType.BLEND_WEIGHTS).Append(MyVertexInputComponentType.BLEND_INDICES);
fixed(MyVertexFormatPositionSkinning *V = vertices)
{
vertexBuffers.Add(MyHwBuffers.CreateVertexBuffer(verticesNum, sizeof(MyVertexFormatPositionSkinning), BindFlags.VertexBuffer, ResourceUsage.Immutable, new IntPtr(V), assetName + " vertex buffer " + vertexBuffers.Count));
}
}
// add second stream
{
var vertices = new MyVertexFormatTexcoordNormalTangent[verticesNum];
for (int i = 0; i < verticesNum; i++)
{
vertices[i] = new MyVertexFormatTexcoordNormalTangent(texcoords[i], normals[i], tangentBitanSgn[i]);
}
fixed(MyVertexFormatTexcoordNormalTangent *V = vertices)
{
vertexBuffers.Add(MyHwBuffers.CreateVertexBuffer(verticesNum, sizeof(MyVertexFormatTexcoordNormalTangent), BindFlags.VertexBuffer, ResourceUsage.Immutable, new IntPtr(V), assetName + " vertex buffer " + vertexBuffers.Count));
}
result.VertexExtendedData = vertices;
meshVertexInput = meshVertexInput
.Append(MyVertexInputComponentType.NORMAL, 1)
.Append(MyVertexInputComponentType.TANGENT_SIGN_OF_BITANGENT, 1)
.Append(MyVertexInputComponentType.TEXCOORD0_H, 1);
}
}
#endregion
}
#region Extract lods
if (tagData.ContainsKey(MyImporterConstants.TAG_LODS))
{
var tagLODs = tagData[MyImporterConstants.TAG_LODS];
if (((MyLODDescriptor[])tagLODs).Length > 0)
{
}
LodDescriptors = (MyLODDescriptor[])((MyLODDescriptor[])tagLODs).Clone();
}
#endregion
if (missingMaterial)
{
Debug.WriteLine(String.Format("Mesh {0} has missing material", assetName));
}
//indexBuffer.SetDebugName(assetName + " index buffer");
int c = 0;
//vertexBuffers.ForEach(x => x.SetDebugName(assetName + " vertex buffer " + c++));
//
result.BoundingBox = (BoundingBox)tagData[MyImporterConstants.TAG_BOUNDING_BOX];
result.BoundingSphere = (BoundingSphere)tagData[MyImporterConstants.TAG_BOUNDING_SPHERE];
result.VerticesNum = verticesNum;
result.IndicesNum = indicesNum;
result.VertexLayout = meshVertexInput;
result.IB = indexBuffer;
result.VB = vertexBuffers.ToArray();
result.IsAnimated = hasBonesInfo;
result.Parts = submeshes.ToDictionary(x => x.Key, x => x.Value.ToArray());
result.PartsMetadata = submeshes2.ToDictionary(x => x.Key, x => x.Value.ToArray());
result.m_submeshes = submeshesMeta;
IsAnimated |= result.IsAnimated;
importer.Clear();
return(result);
}
internal MyVertexFormatTexcoordNormalTangent(HalfVector2 texcoord, Vector3 normal, Vector4 tangent)
{
Texcoord = texcoord;
Normal = VF_Packer.PackNormalB4(ref normal);
Tangent = VF_Packer.PackTangentSignB4(ref tangent);
}