Shader compilation was failing on macOS: gstglslstage.c:519:_compile_shader:<glslstage1> fragment shader compilation failed: ERROR: 0:10: 'input_swizzle' : syntax error: Array size must appear after variable name Co-authored-by: Matthew Waters <matthew@centricular.com> Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/5123>