Hello ,

I am trying to integrate Eigen into an OpenGL application but I am having problem with creating VAO using Eigen Vector3f inside a structure.
If I define something like this:

Code: Select all

struct Vertex
{
   Eigen::Vector3f position;
   Eigen::Vector3f normal;
   Eigen::Vector2f texcoord;
};

Then if I pass it to glVertexAttribPointer , I am not sure what the size of the stride should be ?
What is the suggested workflow in this case ?

Thanks in advance,

Alex

The stride should be 'sizeof(Vertex)'. For the pointer offsets, the safest is to let the compiler computes it for you, e.g.:

Vertex *vertices = ...;

then the offset for the texture coordinates is: (void*)(vertices[0].texcoord.data() - vertices[0].position.data())