Are there adapter methods in Eigen to simply convert between Eigen::Matrix4d and QMatrix4x4 or for example between Eigen::Vector3d and QVector3D?

I would like to feed my uniform in my vertex shader program handled by QGLSLProgram with setUniformValue with proper QMatrix and QVector3D.

And as other question, is the storage-order automatically handled between column-major Eigen method and row-major OpenGL method when feeding uniform mat4 to a GLSL shader or should I transpose the matrices?

You can use our OpenGLSupport module to specify uniform from Eigen's objects without boring about storage order and temporary evaluation, e.g.:

Code: Select all

Matrix4f A;
Matrix<float,4,4,RowMajor> B;
glUniform(loc, A);
glUniform(loc, B);
glUniform(loc, A+B);