Flatbuffers:访问冲突: Endian Scalar

Question

https://pastebin.com/1cZ8M5Zk

模式：

/* Model.fbs
namespace Resource.Model;

struct Vec3 {
x:float;
y:float;
z:float;
}

struct Vec2 {
x:float;
y:float;
}

table MeshData {
Position:[Vec3];
Normal:[Vec3];
TexCoords:[Vec2];
Tangent:[Vec3];
Bitangent:[Vec3];
}

table VertexObject {
MData:MeshData;
Indices:[uint];
MatNameHash:uint;
}

table Model {
Name:uint;
Meshes:[VertexObject];
}

root_type Model;
*/

建筑：

//....
auto a = builder.CreateVectorOfStructs(Positions);
auto b = builder.CreateVectorOfStructs(Normals);
auto c = builder.CreateVectorOfStructs(TexCoords);
auto d = builder.CreateVectorOfStructs(Tangents);
auto e = builder.CreateVectorOfStructs(Bitangents);

auto f = CreateMeshData(builder, a, b, c, d, e);


auto g = builder.CreateVector<uint32_t>(Indices);

unsigned int h = 1024; //Hash of Name of Material

std::vector<flatbuffers::Offset<VertexObject>> VO;
auto i = CreateVertexObject(builder, f, g, h);
auto i2 = CreateVertexObject(builder, f, g, h);

VO.push_back(i);
VO.push_back(i2);

auto j = builder.CreateVector(VO);
//...

装货：

auto test = GetModel(data);


assert(test->Name());
auto name = test->Name();

assert(test->Meshes());
auto FBMeshes = test->Meshes();


for (unsigned int i = 0; i < FBMeshes->size(); i++)
{
    assert(FBMeshes->Get(i));
    auto FBMeshesIndex = FBMeshes->Get(i);


    //assert(FBMeshesIndex->MData());
}

当试图在Flatbuffers中调用表向量时，我会遇到访问冲突。包含的是架构和源代码。我认为这与组件如何为MeshData表一起序列化有关，但我无法确定确切的位置。当我尝试运行assert(FBMeshesIndex>MData()；它是根-> Vec :Tables()->Get(I)->Vec:Tables())时，会得到错误。

TestBed.exe！平面缓冲区：：ReadScalar(const* p)第219行C++符号加载。( TestBed.exe!flatbuffers::Table::GetOptionalFieldOffset(unsigned短字段) 1866行C++符号加载。( TestBed.exe!flatbuffers::Table::GetPointer(unsigned短字段) 1878行C++符号加载。( TestBed.exe!flatbuffers::Table::GetPointer(unsigned短字段) 1885行C++符号加载。已加载TestBed.exe!Resource::Model::VertexObject::MData()行180 C++符号。TestBed.exe!main()行147 C++符号加载。外部代码注释框架

Answer 1

代码看起来很好，所以问题可能在代码之外，data是如何从构建到被使用的。

name 1024的值是多少？是FBMeshes->size() 2吗？此外，在访问data之前，您应该在它上运行一个验证器，以查看数据的传递方式是否有任何问题。