vout: opengl: fix var storage qualifier in renderer fragment shader
requested to merge umxprime/vlc:umxprime/4.x/vout/opengl/fix-glsl-varying-var-in-renderer into master
It fixes a GLSL storage qualifier issue introduced by a change in e67f66ca
Here varying
storage qualifier has to be used in order to compile properly and get the value passed from the vertex shader
Edited by Maxime Chapelet