From 60420f6ea4c470966fdd7cebd5bdf2d9fb484c06 Mon Sep 17 00:00:00 2001
From: Philipp Oeser <info@graphics-engineer.com>
Date: Thu, 25 Aug 2022 10:38:30 +0200
Subject: Fix T100602: Incoming Vector in world shader for Eevee is inverted

Regression from {rBf4d7ea2cf61} where the direction was flipped.

Maniphest Tasks: T100602

Differential Revision: https://developer.blender.org/D15779
---
 source/blender/draw/engines/eevee/shaders/surface_lib.glsl | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/source/blender/draw/engines/eevee/shaders/surface_lib.glsl b/source/blender/draw/engines/eevee/shaders/surface_lib.glsl
index 80c6b935187..488e229bff7 100644
--- a/source/blender/draw/engines/eevee/shaders/surface_lib.glsl
+++ b/source/blender/draw/engines/eevee/shaders/surface_lib.glsl
@@ -97,7 +97,7 @@ GlobalData init_globals(void)
   GlobalData surf;
 
 #  if defined(WORLD_BACKGROUND) || defined(PROBE_CAPTURE)
-  surf.P = transform_direction(ViewMatrixInverse, viewCameraVec(viewPosition));
+  surf.P = transform_direction(ViewMatrixInverse, -viewCameraVec(viewPosition));
   surf.N = surf.Ng = -surf.P;
   surf.ray_length = 0.0;
 #  else
-- 
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