From ff2d2a6e93d75d24b3f69f2b3690bcac6440961e Mon Sep 17 00:00:00 2001
From: x2048 <codeforsmile@gmail.com>
Date: Sun, 25 Jul 2021 12:35:12 +0200
Subject: [PATCH] Add smooth light-shadow transition at noon (#11430)

Node faces with normals pointing East/West (+X/-X) will transition between light
and shadow at noon. This code makes the transition smooth.
---
 client/shaders/nodes_shader/opengl_fragment.glsl | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/client/shaders/nodes_shader/opengl_fragment.glsl b/client/shaders/nodes_shader/opengl_fragment.glsl
index 9f8a21d09..64a88ebbb 100644
--- a/client/shaders/nodes_shader/opengl_fragment.glsl
+++ b/client/shaders/nodes_shader/opengl_fragment.glsl
@@ -498,8 +498,8 @@ void main(void)
 
 	}
 
-	if (f_normal_length != 0 && cosLight < 0.0) {
-		shadow_int = clamp(1.0-nightRatio, 0.0, 1.0);
+	if (f_normal_length != 0 && cosLight < 0.035) {
+		shadow_int = max(shadow_int, min(clamp(1.0-nightRatio, 0.0, 1.0), 1 - clamp(cosLight, 0.0, 0.035)/0.035));
 	}
 
 	shadow_int = 1.0 - (shadow_int * f_adj_shadow_strength);