NeoLux

Text on signs and the cracks on a block being mined show again.

Fixed

• Sign text was invisible. Iris draws it with gbuffers_block_translucent, which the pack did not have, and the program it fell back to only fills the geometry buffers, after the lighting had already run. The pack ships that program now and lights the text itself.
• The cracks on a block being mined did not show. They were multiplied into the albedo after the deferred pass had lit the block, and go onto the finished color as well now.
• Dropped stained glass and translucent items in the hand found themselves in the colored shadow map and took their own color a second time, in blotches. They take shadow from opaque blocks only.