Shadow rendering inconsistent across block faces

[ArgentVASIMR]

Here's a screenshot demonstrating the problem more clearly, taken with Complementary Reimagined r5.5.1:

This is a problem already raised in #213 (by @KitchenBoy08) and #60 (by @motyI), with the cited reason for not fixing this being that this is a side effect of Complementary's anti-light-leak implementation, to avoid sun/moonlight going between the block gaps and entering caves when it's not supposed to.

While I understand the reasoning, a different shader (BSL v10.0) does not have this issue, nor does it have any light leaking in caves. Here's a screenshot similar to the above in BSL v10.0:

I would much prefer to use Complementary as its overall presentation is-- in my opinion-- superior to BSL. I appreciate the effort you all put into this, been getting into running shaders recently and Complementary Reimagined is by far my favourite! I just hope this weird shadow issue can get fixed at some point. Hope to hear from you soon!

[EminGT]

Yeah this indeed is Complementary's way of fixing cave light leaking. BSL does not do this, but please keep in mind that BSL has sun/moon lighting completely disabled for areas that don't have and skylight. This results in BSL being unable to produce a scene where sunlight seeps in through a distant hole in a cave, while in Complementary you can have sunlight shining into any dark area. So in the end this is just an intentional compromise.