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-rw-r--r--src/mapblock_mesh.cpp4
1 files changed, 2 insertions, 2 deletions
diff --git a/src/mapblock_mesh.cpp b/src/mapblock_mesh.cpp
index 79d02d6ff..2520b5459 100644
--- a/src/mapblock_mesh.cpp
+++ b/src/mapblock_mesh.cpp
@@ -1090,9 +1090,9 @@ MapBlockMesh::MapBlockMesh(MeshMakeData *data, v3s16 camera_offset):
brightness of vertices 1 and 3 differ less than
the brightness of vertices 0 and 2.
*/
- if (abs(f.vertices[0].Color.getLuminance()
+ if (fabs(f.vertices[0].Color.getLuminance()
- f.vertices[2].Color.getLuminance())
- > abs(f.vertices[1].Color.getLuminance()
+ > fabs(f.vertices[1].Color.getLuminance()
- f.vertices[3].Color.getLuminance()))
indices_p = indices_alternate;