From a685e024a62751289ccfa41c962b039d1de748bd Mon Sep 17 00:00:00 2001
From: Graham Linden <graham@lindenlab.com>
Date: Tue, 23 Apr 2019 13:12:16 -0700
Subject: SL-10901

Bias shadow sampling and allow control of how dark shadows are (clamped ambient).
---
 indra/newview/app_settings/shaders/class1/deferred/softenLightF.glsl | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

(limited to 'indra/newview/app_settings/shaders/class1/deferred/softenLightF.glsl')

diff --git a/indra/newview/app_settings/shaders/class1/deferred/softenLightF.glsl b/indra/newview/app_settings/shaders/class1/deferred/softenLightF.glsl
index 6f18244875..68deedd0d0 100644
--- a/indra/newview/app_settings/shaders/class1/deferred/softenLightF.glsl
+++ b/indra/newview/app_settings/shaders/class1/deferred/softenLightF.glsl
@@ -70,6 +70,7 @@ vec4 applyWaterFogView(vec3 pos, vec4 color);
 vec3 getNorm(vec2 pos_screen);
 vec3 atmosFragLighting(vec3 l, vec3 additive, vec3 atten);
 
+float getAmbientClamp();
 void calcAtmosphericVars(vec3 inPositionEye, float ambFactor, out vec3 sunlit, out vec3 amblit, out vec3 additive, out vec3 atten);
 
 vec3 scaleSoftClipFrag(vec3 l);
@@ -111,7 +112,7 @@ void main()
         float ambient = da;
         ambient *= 0.5;
         ambient *= ambient;
-        ambient = max(0.66, ambient);
+        ambient = max(getAmbientClamp(), ambient);
         ambient = 1.0 - ambient;
 
         vec3 sun_contrib = final_da * sunlit;
-- 
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