export MESA_GL_VERSION_OVERRIDE=4.1COMPAT

export MESA_GLSL_VERSION_OVERRIDE=410

​

here 4.1 is the version i changed to

so if you want to change to like 1.4 you will do:

​

export MESA_GL_VERSION_OVERRIDE=1.4COMPAT

export MESA_GLSL_VERSION_OVERRIDE=140