Current frame joint transformations calculation

public List<Matrix> slerpBetweenFrames(AnimationFrame frame1, AnimationFrame frame2, List<Matrix> jointUnbindMatrices,
                                           float inter, int numJoints) {

		// Currently does not take joint scaling into account because I did not have to worry about that while building the MD5anim
        // loader, but I doubt that is the cause here.

        List<Matrix> results = new ArrayList<>(numJoints);
        for(int i = 0;i < numJoints;i++) {
            var joint1 = frame1.joints.get(i);
            var joint2 = frame2.joints.get(i);

            var int_pos = joint1.pos.add(joint2.pos.sub(joint1.pos).scalarMul(inter));
            var int_orient = Quaternion.slerp(joint1.orient, joint2.orient, inter);

            var localMat = int_orient.getRotationMatrix().addColumn(int_pos).addRow(new Vector(0,0,0,1));
            Matrix jointMat;
            if(jointUnbindMatrices != null) {
                jointMat = localMat.matMul(jointUnbindMatrices.get(i));
            }
            else {
                jointMat = localMat;
            }
            results.add(jointMat);
//            results.add(Matrix.getIdentityMatrix(4));
        }
        return results;
    }