What OpenGL version is LibreOffice targetting at?

  1. What is the current OpenGL version LibreOffice is targetting at?
  2. Are there plans to change the OpenGL target version?
  3. To speculate: What (upcoming) features (may) affect OpenGL version required by LibreOffice?

LibreOffice’s OpenGL powered rendering engine looks promising. The purpose of these questions is to shed some light on OpenGL support in LibreOffice to help users making qualified decisions when investing into new hardware. Should a user buy this shiny new OpenGL 4.5 graphics card or doesn’t LibreOffice even make use of OpenGL 3.x features? Any user documentation out there covering such questions?