The member names in the "uniform block" (which is in practice
mapped to a struct uniform with GLSL) must match between the
vertex and fragment shaders, even if the member is not used in
one of the shaders. This is because OpenGL/GLSL's interface
matching rules, which would cause the shader program fail to
link due to a mismatch in the structs in the two shaders.
Pick-to: 6.1 6.0
Change-Id: I9a928b4b20fdff14530c16a93a52967ce6c328a3
Reviewed-by: Shawn Rutledge <shawn.rutledge@qt.io>