glsl: fix max varyings count for ARB_enhanced_layouts

Since this extension allows more than one varying to share a single
location we can't just count the number of slots a varying takes and
add it to the total.

Instead we now reuse the reserved varyings bitfield to determine how
many slots are reserved for explicit locations instead.

Reviewed-by: Kenneth Graunke <[email protected]>

0 files changed, 0 insertions, 0 deletions