4 files changed, 18 insertions, 124 deletions
diff --git a/indra/newview/app_settings/shaders/class1/deferred/softenLightF.glsl b/indra/newview/app_settings/shaders/class1/deferred/softenLightF.glsl
index 4b9e8290dd..c599c14b43 100644
--- a/indra/newview/app_settings/shaders/class1/deferred/softenLightF.glsl
+++ b/indra/newview/app_settings/shaders/class1/deferred/softenLightF.glsl
@@ -73,6 +73,8 @@ vec3 fullbrightAtmosTransportFrag(vec3 l, vec3 additive, vec3 atten);
 
 void calcFragAtmospherics(vec3 inPositionEye, float ambFactor, out vec3 sunlit, out vec3 amblit, out vec3 additive, out vec3 atten);
 
+void calcAtmosphericVars(vec3 inPositionEye, float ambFactor, out vec3 sunlit, out vec3 amblit, out vec3 additive, out vec3 atten);
+
 vec3 scaleSoftClipFrag(vec3 l);
 
 vec4 getPositionWithDepth(vec2 pos_screen, float depth);
@@ -107,8 +109,8 @@ void main()
         vec3 additive;
         vec3 atten;
 
-        calcFragAtmospherics(pos.xyz, 1.0, sunlit, amblit, additive, atten);
-
+        calcAtmosphericVars(pos.xyz, 1.0, sunlit, amblit, additive, atten);
+        sunlit *= 0.5;
         float ambient = da;
         ambient *= 0.5;
         ambient *= ambient;
diff --git a/indra/newview/app_settings/shaders/class1/windlight/atmosphericsFuncs.glsl b/indra/newview/app_settings/shaders/class1/windlight/atmosphericsFuncs.glsl
index 2854fb8139..a099083883 100644
--- a/indra/newview/app_settings/shaders/class1/windlight/atmosphericsFuncs.glsl
+++ b/indra/newview/app_settings/shaders/class1/windlight/atmosphericsFuncs.glsl
@@ -77,7 +77,7 @@ void calcAtmosphericVars(vec3 inPositionEye, float ambFactor, out vec3 sunlit, o
     temp2.x = dot(Pn, tmpLightnorm.xyz);
     temp2.x = 1. - temp2.x;
         //temp2.x is 0 at the sun and increases away from sun
-    temp2.x = max(temp2.x, .03);    //was glow.y
+    temp2.x = max(temp2.x, .001);    //was glow.y
         //set a minimum "angle" (smaller glow.y allows tighter, brighter hotspot)
     temp2.x *= glow.x;
         //higher glow.x gives dimmer glow (because next step is 1 / "angle")
@@ -109,8 +109,8 @@ void calcAtmosphericVars(vec3 inPositionEye, float ambFactor, out vec3 sunlit, o
           + tmpAmbient));
 
     //brightness of surface both sunlight and ambient
-    sunlit = vec3(sunlight.rgb);
-    amblit = vec3(tmpAmbient * .25);
+    sunlit = sunlight.rgb;
+    amblit = tmpAmbient.rgb * .25;
     additive  = normalize(additive);
     additive *= vec3(1.0 - exp(-temp2.z * distance_multiplier)) * 0.5;
 }
 \ No newline at end of file
diff --git a/indra/newview/app_settings/shaders/class2/deferred/softenLightF.glsl b/indra/newview/app_settings/shaders/class2/deferred/softenLightF.glsl
index 4c7c50315f..2a772e6741 100644
--- a/indra/newview/app_settings/shaders/class2/deferred/softenLightF.glsl
+++ b/indra/newview/app_settings/shaders/class2/deferred/softenLightF.glsl
@@ -126,7 +126,7 @@ void main()
         vec3 atten;
     
         calcAtmosphericVars(pos.xyz, ambocc, sunlit, amblit, additive, atten);
-
+        sunlit *= 0.5;
         float ambient = da;
         ambient *= 0.5;
         ambient *= ambient;
diff --git a/indra/newview/app_settings/shaders/class2/windlight/atmosphericsV.glsl b/indra/newview/app_settings/shaders/class2/windlight/atmosphericsV.glsl
index 6c4098b9fb..ac7931209e 100644
--- a/indra/newview/app_settings/shaders/class2/windlight/atmosphericsV.glsl
+++ b/indra/newview/app_settings/shaders/class2/windlight/atmosphericsV.glsl
@@ -34,128 +34,20 @@ void setPositionEye(vec3 v);
 
 vec3 getAdditiveColor();
 
-//VARYING vec4 vary_CloudUVs;
-//VARYING float vary_CloudDensity;
-
-// Inputs
-uniform vec4 morphFactor;
-uniform vec3 camPosLocal;
-//uniform vec4 camPosWorld;
-
-uniform vec4 lightnorm;
-uniform vec4 sunlight_color;
-uniform vec4 moonlight_color;
-uniform int sun_up_factor;
-uniform vec4 ambient;
-uniform vec4 blue_horizon;
-uniform vec4 blue_density;
-uniform float haze_horizon;
-uniform float haze_density;
-uniform float cloud_shadow;
-uniform float density_multiplier;
-uniform float distance_multiplier;
-uniform float max_y;
-uniform vec4 glow;
-uniform float sun_moon_glow_factor;
+void calcAtmosphericVars(vec3 inPositionEye, float ambFactor, out vec3 sunlit, out vec3 amblit, out vec3 additive, out vec3 atten);
 
 void calcAtmospherics(vec3 inPositionEye) {
 
     vec3 P = inPositionEye;
     setPositionEye(P);
-    
-    //(TERRAIN) limit altitude
-    if (P.y > max_y) P *= (max_y / P.y);
-    if (P.y < -max_y) P *= (-max_y / P.y);
-
-    vec3 tmpLightnorm = lightnorm.xyz;
-
-    vec3 Pn = normalize(P);
-    float  Plen = length(P);
-
-    vec4 temp1 = vec4(0);
-    vec3 temp2 = vec3(0);
-    vec4 blue_weight;
-    vec4 haze_weight;
-    vec4 sunlight = (sun_up_factor == 1) ? sunlight_color : moonlight_color;
-    vec4 light_atten;
-
-    //sunlight attenuation effect (hue and brightness) due to atmosphere
-    //this is used later for sunlight modulation at various altitudes
-    light_atten = (blue_density + vec4(haze_density * 0.25)) * (density_multiplier * max_y);
-        //I had thought blue_density and haze_density should have equal weighting,
-        //but attenuation due to haze_density tends to seem too strong
-
-    temp1 = blue_density + vec4(haze_density);
-    blue_weight = blue_density / temp1;
-    haze_weight = vec4(haze_density) / temp1;
-
-    //(TERRAIN) compute sunlight from lightnorm only (for short rays like terrain)
-    temp2.y = max(0.0, tmpLightnorm.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
-    temp2.z = Plen * density_multiplier;
-
-    // Transparency (-> temp1)
-    // ATI Bugfix -- can't store temp1*temp2.z*distance_multiplier in a variable because the ati
-    // compiler gets confused.
-    temp1 = exp(-temp1 * temp2.z * distance_multiplier);
-
-    //final atmosphere attenuation factor
-    setAtmosAttenuation(temp1.rgb);
-    //vary_AtmosAttenuation = distance_multiplier / 10000.;
-    //vary_AtmosAttenuation = density_multiplier * 100.;
-    //vary_AtmosAttenuation = vec4(Plen / 100000., 0., 0., 1.);
-
-    //compute haze glow
-    //(can use temp2.x as temp because we haven't used it yet)
-    temp2.x = dot(Pn, tmpLightnorm.xyz);
-    temp2.x = 1. - temp2.x;
-        //temp2.x is 0 at the sun and increases away from sun
-    temp2.x = max(temp2.x, .03);    //was glow.y
-        //set a minimum "angle" (smaller glow.y allows tighter, brighter hotspot)
-    temp2.x *= glow.x;
-        //higher glow.x gives dimmer glow (because next step is 1 / "angle")
-    temp2.x = pow(temp2.x, glow.z);
-        //glow.z should be negative, so we're doing a sort of (1 / "angle") function
-
-    temp2.x *= sun_moon_glow_factor;
-
-    //add "minimum anti-solar illumination"
-    temp2.x += .25;
-
-    //increase ambient when there are more clouds
-    vec4 tmpAmbient = ambient + (vec4(1.) - ambient) * cloud_shadow * 0.5;
-
-    vec3 additive = 
-        vec3(blue_horizon * blue_weight * (sunlight*(1.-cloud_shadow) + tmpAmbient)
-      + (haze_horizon * haze_weight) * (sunlight*(1.-cloud_shadow) * temp2.x
-          + tmpAmbient));
-    additive = normalize(additive);
-
-    //brightness of surface both sunlight and ambient
-    setSunlitColor(vec3(sunlight * .5));
-    setAmblitColor(vec3(tmpAmbient * .25));
-    setAdditiveColor(additive * vec3(1.0 - exp(-temp2.z * distance_multiplier)) * 0.5);
-
-    /*
-    const float cloudShadowScale = 100.;
-    // Get cloud uvs for shadowing
-    vec3 cloudPos = inPositionEye + camPosWorld - cloudShadowScale / 2.;
-    vary_CloudUVs.xy = cloudPos.xz / cloudShadowScale;
-
-    // We can take uv1 and multiply it by (TerrainSpan / CloudSpan)
-//  cloudUVs *= (((worldMaxZ - worldMinZ) * 20) /40000.);
-    vary_CloudUVs *= (10000./40000.);
-
-    // Offset by sun vector * (CloudAltitude / CloudSpan)
-    vary_CloudUVs.x += tmpLightnorm.x / tmpLightnorm.y * (3000./40000.);
-    vary_CloudUVs.y += tmpLightnorm.z / tmpLightnorm.y * (3000./40000.);
-    */
+    vec3 tmpsunlit = vec3(1);
+    vec3 tmpamblit = vec3(1);
+    vec3 tmpaddlit = vec3(1);
+    vec3 tmpattenlit = vec3(1);
+    calcAtmosphericVars(inPositionEye, 1, tmpsunlit, tmpamblit, tmpaddlit, tmpattenlit);
+    setSunlitColor(tmpsunlit);
+    setAmblitColor(tmpamblit);
+    setAdditiveColor(tmpaddlit);
+    setAtmosAttenuation(tmpattenlit);
 }