SL-10741

Remove shadow influence on ambient term causing inverted lighting in extreme setups.

2 files changed, 3 insertions, 4 deletions

diff --git a/indra/newview/app_settings/shaders/class1/deferred/alphaF.glsl b/indra/newview/app_settings/shaders/class1/deferred/alphaF.glsl
index a5076ef609..251ec7d785 100644
--- a/indra/newview/app_settings/shaders/class1/deferred/alphaF.glsl
+++ b/indra/newview/app_settings/shaders/class1/deferred/alphaF.glsl
@@ -198,7 +198,7 @@ void main()
     float ambient = abs(da);
     ambient *= 0.5;
     ambient *= ambient;
-    ambient = 1.0 - ambient * smoothstep(0.0, 0.3, shadow);
+    ambient = 1.0 - ambient;
 
     vec3 sun_contrib = min(da, shadow) * sunlit;
 
diff --git a/indra/newview/app_settings/shaders/class1/deferred/materialF.glsl b/indra/newview/app_settings/shaders/class1/deferred/materialF.glsl
index 5f4f1677d7..76c1fc7cf4 100644
--- a/indra/newview/app_settings/shaders/class1/deferred/materialF.glsl
+++ b/indra/newview/app_settings/shaders/class1/deferred/materialF.glsl
@@ -294,16 +294,15 @@ void main()
     da = clamp(da, 0.0, 1.0);
     da = pow(da, 1.0 / 1.3);
 
-    col.rgb = amblit;
-    
     float ambient = abs(da);
     ambient *= 0.5;
     ambient *= ambient;
-    ambient = 1.0 - ambient * smoothstep(0.0, 0.3, shadow);
+    ambient = 1.0 - ambient;
 
     float final_da = min(da, shadow);
     vec3 sun_contrib = final_da * sunlit;
    
+    col.rgb = amblit;
     col.rgb *= ambient;
     col.rgb += sun_contrib;
     col.rgb *= diffuse.rgb;