SL-10743, SL-10744

Don't step on SUNLIGHT_COLOR uniform w/ syncLightState competing set.

Put drawpool alpha render loop lighting setup changes as they were
(this will give back some performance and possibly require reopening 10566).

4 files changed, 11 insertions, 5 deletions

diff --git a/indra/newview/app_settings/shaders/class1/deferred/alphaF.glsl b/indra/newview/app_settings/shaders/class1/deferred/alphaF.glsl
index 251ec7d785..fdbf5ec840 100644
--- a/indra/newview/app_settings/shaders/class1/deferred/alphaF.glsl
+++ b/indra/newview/app_settings/shaders/class1/deferred/alphaF.glsl
@@ -118,7 +118,7 @@ vec3 calcPointLightOrSpotLight(vec3 light_col, vec3 diffuse, vec3 v, vec3 n, vec
         float amb_da = ambiance;
         amb_da *= dist_atten;
         amb_da += (da*0.5) * ambiance;
-        amb_da += (da*da*0.5 + 0.5) * ambiance;
+        amb_da += (da*da*0.5 + 0.25) * ambiance;
         amb_da = min(amb_da, 1.0f - lit);
 
         col.rgb += amb_da * light_col * diffuse;
@@ -228,7 +228,6 @@ void main()
     color.rgb += light.rgb;
 
     color.rgb = linear_to_srgb(color.rgb);
-
 #endif
 
 #ifdef WATER_FOG
diff --git a/indra/newview/app_settings/shaders/class1/deferred/materialF.glsl b/indra/newview/app_settings/shaders/class1/deferred/materialF.glsl
index 76c1fc7cf4..ae2dd24b19 100644
--- a/indra/newview/app_settings/shaders/class1/deferred/materialF.glsl
+++ b/indra/newview/app_settings/shaders/class1/deferred/materialF.glsl
@@ -112,7 +112,6 @@ vec3 calcPointLightOrSpotLight(vec3 light_col, vec3 npos, vec3 diffuse, vec4 spe
         //angular attenuation
         da = dot(n, lv);
         da *= clamp(da, 0.0, 1.0);
-        da *= pow(da, 1.0 / 1.3);
         
         float lit = max(da * dist_atten, 0.0);
 
diff --git a/indra/newview/app_settings/shaders/class2/windlight/atmosphericsF.glsl b/indra/newview/app_settings/shaders/class2/windlight/atmosphericsF.glsl
index 565c00ba79..14af657e67 100644
--- a/indra/newview/app_settings/shaders/class2/windlight/atmosphericsF.glsl
+++ b/indra/newview/app_settings/shaders/class2/windlight/atmosphericsF.glsl
@@ -96,7 +96,11 @@ void calcFragAtmospherics(vec3 inPositionEye, float ambFactor, out vec3 sunlit,
 
     //(TERRAIN) compute sunlight from lightnorm only (for short rays like terrain)
     temp2.y = max(0.0, tmpLightnorm.y);
-    temp2.y = 1. / temp2.y;
+    if (temp2.y > 0.001f)
+    {
+        temp2.y = 1. / temp2.y;
+    }
+    temp2.y = max(0.001f, temp2.y);
     sunlight *= exp(-light_atten * temp2.y);
 
     // main atmospheric scattering line integral
diff --git a/indra/newview/app_settings/shaders/class2/windlight/atmosphericsV.glsl b/indra/newview/app_settings/shaders/class2/windlight/atmosphericsV.glsl
index bef7a8827a..6c4098b9fb 100644
--- a/indra/newview/app_settings/shaders/class2/windlight/atmosphericsV.glsl
+++ b/indra/newview/app_settings/shaders/class2/windlight/atmosphericsV.glsl
@@ -91,7 +91,11 @@ void calcAtmospherics(vec3 inPositionEye) {
 
     //(TERRAIN) compute sunlight from lightnorm only (for short rays like terrain)
     temp2.y = max(0.0, tmpLightnorm.y);
-    temp2.y = 1. / temp2.y;
+    if (temp2.y > 0.001f)
+    {
+        temp2.y = 1. / temp2.y;
+    }
+    temp2.y = max(0.001f, temp2.y);
     sunlight *= exp( - light_atten * temp2.y);
 
     // main atmospheric scattering line integral