From 7e9033821a96a9d6e80b58fafb4c7da63807b9d4 Mon Sep 17 00:00:00 2001
From: Graham Linden <graham@lindenlab.com>
Date: Thu, 6 Dec 2018 10:59:11 -0800
Subject: De-duplicate deferred gbuffer access for getPosition/getNorm.

De-duplicate ambient occlusion shader code and move to new aoUtil.glsl

Split shared shadow tap funcs into shadowUtil.glsl
---
 .../shaders/class1/deferred/shadowUtil.glsl        | 191 +++++++++++++++++++++
 1 file changed, 191 insertions(+)
 create mode 100644 indra/newview/app_settings/shaders/class1/deferred/shadowUtil.glsl

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

diff --git a/indra/newview/app_settings/shaders/class1/deferred/shadowUtil.glsl b/indra/newview/app_settings/shaders/class1/deferred/shadowUtil.glsl
new file mode 100644
index 0000000000..ae5cb7cbc1
--- /dev/null
+++ b/indra/newview/app_settings/shaders/class1/deferred/shadowUtil.glsl
@@ -0,0 +1,191 @@
+/** 
+ * @file class1/deferred/shadowUtil.glsl
+ *
+ * $LicenseInfo:firstyear=2007&license=viewerlgpl$
+ * Second Life Viewer Source Code
+ * Copyright (C) 2007, Linden Research, Inc.
+ * 
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation;
+ * version 2.1 of the License only.
+ * 
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ * 
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ * 
+ * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
+ * $/LicenseInfo$
+ */
+
+uniform sampler2DRect   normalMap;
+uniform sampler2DRect   depthMap;
+uniform sampler2D       noiseMap;
+uniform sampler2DShadow shadowMap0;
+uniform sampler2DShadow shadowMap1;
+uniform sampler2DShadow shadowMap2;
+uniform sampler2DShadow shadowMap3;
+uniform sampler2DShadow shadowMap4;
+uniform sampler2DShadow shadowMap5;
+
+uniform float ssao_radius;
+uniform float ssao_max_radius;
+uniform float ssao_factor;
+uniform float ssao_factor_inv;
+
+uniform vec3 sun_dir;
+uniform vec3 moon_dir;
+uniform vec2 shadow_res;
+uniform vec2 proj_shadow_res;
+uniform mat4 shadow_matrix[6];
+uniform vec4 shadow_clip;
+uniform float shadow_bias;
+
+uniform float spot_shadow_bias;
+uniform float spot_shadow_offset;
+
+uniform mat4 inv_proj;
+uniform vec2 screen_res;
+
+vec3 decode_normal(vec2 enc);
+
+float pcfShadow(sampler2DShadow shadowMap, vec4 stc, float bias_scale, vec2 pos_screen)
+{
+    stc.xyz /= stc.w;
+    stc.z += shadow_bias;
+        
+    stc.x = floor(stc.x*pos_screen.x + fract(stc.y*shadow_res.y*12345))/shadow_res.x; // add some chaotic jitter to X sample pos according to Y to disguise the snapping going on here
+    
+    float cs = shadow2D(shadowMap, stc.xyz).x;
+    float shadow = cs;
+    shadow += shadow2D(shadowMap, stc.xyz+vec3(2.0/shadow_res.x, 1.5/shadow_res.y, 0.0)).x;
+    shadow += shadow2D(shadowMap, stc.xyz+vec3(1.0/shadow_res.x, -1.5/shadow_res.y, 0.0)).x;
+    shadow += shadow2D(shadowMap, stc.xyz+vec3(-1.0/shadow_res.x, 1.5/shadow_res.y, 0.0)).x;
+    shadow += shadow2D(shadowMap, stc.xyz+vec3(-2.0/shadow_res.x, -1.5/shadow_res.y, 0.0)).x;
+    return shadow*0.2;
+}
+
+float pcfSpotShadow(sampler2DShadow shadowMap, vec4 stc, float bias_scale, vec2 pos_screen)
+{
+    stc.xyz /= stc.w;
+    stc.z += spot_shadow_bias * bias_scale;
+    stc.x = floor(proj_shadow_res.x * stc.x + fract(pos_screen.y*0.666666666)) / proj_shadow_res.x; // snap
+
+    float cs = shadow2D(shadowMap, stc.xyz).x;
+    float shadow = cs;
+
+    vec2 off = 1.0/proj_shadow_res;
+    off.y *= 1.5;
+    
+    shadow += shadow2D(shadowMap, stc.xyz+vec3(off.x*2.0, off.y, 0.0)).x;
+    shadow += shadow2D(shadowMap, stc.xyz+vec3(off.x, -off.y, 0.0)).x;
+    shadow += shadow2D(shadowMap, stc.xyz+vec3(-off.x, off.y, 0.0)).x;
+    shadow += shadow2D(shadowMap, stc.xyz+vec3(-off.x*2.0, -off.y, 0.0)).x;
+    return shadow*0.2;
+}
+
+float sampleDirectionalShadow(vec3 pos, vec3 norm, vec2 pos_screen)
+{
+    float dp_sun = max(0.0, dot(sun_dir.xyz, norm));
+    float dp_moon = max(0.0, dot(moon_dir.xyz, norm));
+    float dp_directional_light = max(dp_sun,dp_moon);
+          dp_directional_light = clamp(dp_directional_light, 0.0, 1.0);
+
+        vec3 light_dir = (dp_moon > dp_sun) ? moon_dir : sun_dir;
+    vec3 offset = light_dir * (1.0-dp_directional_light);
+    vec3 shadow_pos = pos.xyz + (offset * shadow_bias);
+
+    float shadow = 0.0f;
+    vec4 spos = vec4(shadow_pos,1.0);
+    if (spos.z > -shadow_clip.w)
+    {   
+        vec4 lpos;
+        vec4 near_split = shadow_clip*-0.75;
+        vec4 far_split = shadow_clip*-1.25;
+        vec4 transition_domain = near_split-far_split;
+        float weight = 0.0;
+
+        if (spos.z < near_split.z)
+        {
+            lpos = shadow_matrix[3]*spos;
+            
+            float w = 1.0;
+            w -= max(spos.z-far_split.z, 0.0)/transition_domain.z;
+            shadow += pcfShadow(shadowMap3, lpos, 0.5, pos_screen)*w;
+            weight += w;
+            shadow += max((pos.z+shadow_clip.z)/(shadow_clip.z-shadow_clip.w)*2.0-1.0, 0.0);
+        }
+
+        if (spos.z < near_split.y && spos.z > far_split.z)
+        {
+            lpos = shadow_matrix[2]*spos;
+            
+            float w = 1.0;
+            w -= max(spos.z-far_split.y, 0.0)/transition_domain.y;
+            w -= max(near_split.z-spos.z, 0.0)/transition_domain.z;
+            shadow += pcfShadow(shadowMap2, lpos, 0.75, pos_screen)*w;
+            weight += w;
+        }
+
+        if (spos.z < near_split.x && spos.z > far_split.y)
+        {
+            lpos = shadow_matrix[1]*spos;
+            
+            float w = 1.0;
+            w -= max(spos.z-far_split.x, 0.0)/transition_domain.x;
+            w -= max(near_split.y-spos.z, 0.0)/transition_domain.y;
+            shadow += pcfShadow(shadowMap1, lpos, 0.88, pos_screen)*w;
+            weight += w;
+        }
+
+        if (spos.z > far_split.x)
+        {
+            lpos = shadow_matrix[0]*spos;
+                            
+            float w = 1.0;
+            w -= max(near_split.x-spos.z, 0.0)/transition_domain.x;
+                
+            shadow += pcfShadow(shadowMap0, lpos, 1.0, pos_screen)*w;
+            weight += w;
+        }
+
+        shadow /= weight;
+    }
+    return shadow;
+}
+
+float sampleSpotShadow(vec3 pos, vec3 norm, int index, vec2 pos_screen)
+{
+    float shadow = 0.0f;
+    pos += norm * spot_shadow_offset;
+
+    vec4 spos = vec4(pos,1.0);
+    if (spos.z > -shadow_clip.w)
+    {   
+        vec4 lpos;
+        
+        vec4 near_split = shadow_clip*-0.75;
+        vec4 far_split = shadow_clip*-1.25;
+        vec4 transition_domain = near_split-far_split;
+        float weight = 0.0;
+
+        {
+            lpos = shadow_matrix[4 + index]*spos;
+            float w = 1.0;
+            w -= max(spos.z-far_split.z, 0.0)/transition_domain.z;
+        
+            shadow += pcfSpotShadow((index == 0) ? shadowMap4 : shadowMap5, lpos, 0.8, spos.xy)*w;
+            weight += w;
+            shadow += max((pos.z+shadow_clip.z)/(shadow_clip.z-shadow_clip.w)*2.0-1.0, 0.0);
+        }
+
+        shadow /= weight;
+    }
+    return shadow;
+}
+
-- 
cgit v1.2.3


From c007e1197c521a1b48736cbba29e7c7dadf39c20 Mon Sep 17 00:00:00 2001
From: Graham Linden <graham@lindenlab.com>
Date: Fri, 4 Jan 2019 13:26:47 -0800
Subject: Convert to using shared shadow sampling function (reduce duplicated
 code blocks in several shaders).

---
 .../shaders/class1/deferred/shadowUtil.glsl        | 34 +++++++++++++++++-----
 1 file changed, 26 insertions(+), 8 deletions(-)

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

diff --git a/indra/newview/app_settings/shaders/class1/deferred/shadowUtil.glsl b/indra/newview/app_settings/shaders/class1/deferred/shadowUtil.glsl
index ae5cb7cbc1..f626609fc2 100644
--- a/indra/newview/app_settings/shaders/class1/deferred/shadowUtil.glsl
+++ b/indra/newview/app_settings/shaders/class1/deferred/shadowUtil.glsl
@@ -54,12 +54,30 @@ uniform vec2 screen_res;
 
 vec3 decode_normal(vec2 enc);
 
+float pcfShadowLegacy(sampler2DShadow shadowMap, vec4 stc)
+{
+	stc.xyz /= stc.w;
+	stc.z += shadow_bias;
+		
+	stc.x = floor(stc.x*shadow_res.x + fract(stc.y*shadow_res.y*12345))/shadow_res.x; // add some chaotic jitter to X sample pos according to Y to disguise the snapping going on here
+	
+	float cs = shadow2D(shadowMap, stc.xyz).x;
+	float shadow = cs;
+	
+    shadow += shadow2D(shadowMap, stc.xyz+vec3(2.0/shadow_res.x, 1.5/shadow_res.y, 0.0)).x;
+    shadow += shadow2D(shadowMap, stc.xyz+vec3(1.0/shadow_res.x, -1.5/shadow_res.y, 0.0)).x;
+    shadow += shadow2D(shadowMap, stc.xyz+vec3(-1.0/shadow_res.x, 1.5/shadow_res.y, 0.0)).x;
+    shadow += shadow2D(shadowMap, stc.xyz+vec3(-2.0/shadow_res.x, -1.5/shadow_res.y, 0.0)).x;
+                       
+    return shadow*0.2;
+}
+
 float pcfShadow(sampler2DShadow shadowMap, vec4 stc, float bias_scale, vec2 pos_screen)
 {
     stc.xyz /= stc.w;
-    stc.z += shadow_bias;
-        
-    stc.x = floor(stc.x*pos_screen.x + fract(stc.y*shadow_res.y*12345))/shadow_res.x; // add some chaotic jitter to X sample pos according to Y to disguise the snapping going on here
+    stc.z += shadow_bias * bias_scale;
+ 
+    stc.x = floor(stc.x*pos_screen.x + fract(stc.y*pos_screen.y*0.666666666))/shadow_res.x; // add some chaotic jitter to X sample pos according to Y to disguise the snapping going on here
     
     float cs = shadow2D(shadowMap, stc.xyz).x;
     float shadow = cs;
@@ -96,7 +114,7 @@ float sampleDirectionalShadow(vec3 pos, vec3 norm, vec2 pos_screen)
     float dp_directional_light = max(dp_sun,dp_moon);
           dp_directional_light = clamp(dp_directional_light, 0.0, 1.0);
 
-        vec3 light_dir = (dp_moon > dp_sun) ? moon_dir : sun_dir;
+    vec3 light_dir = (dp_moon > dp_sun) ? moon_dir : sun_dir;
     vec3 offset = light_dir * (1.0-dp_directional_light);
     vec3 shadow_pos = pos.xyz + (offset * shadow_bias);
 
@@ -116,7 +134,7 @@ float sampleDirectionalShadow(vec3 pos, vec3 norm, vec2 pos_screen)
             
             float w = 1.0;
             w -= max(spos.z-far_split.z, 0.0)/transition_domain.z;
-            shadow += pcfShadow(shadowMap3, lpos, 0.5, pos_screen)*w;
+            shadow += pcfShadowLegacy(shadowMap3, lpos)*w;
             weight += w;
             shadow += max((pos.z+shadow_clip.z)/(shadow_clip.z-shadow_clip.w)*2.0-1.0, 0.0);
         }
@@ -128,7 +146,7 @@ float sampleDirectionalShadow(vec3 pos, vec3 norm, vec2 pos_screen)
             float w = 1.0;
             w -= max(spos.z-far_split.y, 0.0)/transition_domain.y;
             w -= max(near_split.z-spos.z, 0.0)/transition_domain.z;
-            shadow += pcfShadow(shadowMap2, lpos, 0.75, pos_screen)*w;
+            shadow += pcfShadowLegacy(shadowMap2, lpos)*w;
             weight += w;
         }
 
@@ -139,7 +157,7 @@ float sampleDirectionalShadow(vec3 pos, vec3 norm, vec2 pos_screen)
             float w = 1.0;
             w -= max(spos.z-far_split.x, 0.0)/transition_domain.x;
             w -= max(near_split.y-spos.z, 0.0)/transition_domain.y;
-            shadow += pcfShadow(shadowMap1, lpos, 0.88, pos_screen)*w;
+            shadow += pcfShadowLegacy(shadowMap1, lpos)*w;
             weight += w;
         }
 
@@ -150,7 +168,7 @@ float sampleDirectionalShadow(vec3 pos, vec3 norm, vec2 pos_screen)
             float w = 1.0;
             w -= max(near_split.x-spos.z, 0.0)/transition_domain.x;
                 
-            shadow += pcfShadow(shadowMap0, lpos, 1.0, pos_screen)*w;
+            shadow += pcfShadowLegacy(shadowMap0, lpos)*w;
             weight += w;
         }
 
-- 
cgit v1.2.3


From 9de895aa03570935e49aeb5eb874444904de59e6 Mon Sep 17 00:00:00 2001
From: Graham Linden <graham@lindenlab.com>
Date: Tue, 15 Jan 2019 16:06:34 -0800
Subject: SL-10369

Fix handling of backfaces in shared shadow sampling broken during de-duplication.
---
 .../app_settings/shaders/class1/deferred/shadowUtil.glsl       | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

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

diff --git a/indra/newview/app_settings/shaders/class1/deferred/shadowUtil.glsl b/indra/newview/app_settings/shaders/class1/deferred/shadowUtil.glsl
index f626609fc2..70568bc75f 100644
--- a/indra/newview/app_settings/shaders/class1/deferred/shadowUtil.glsl
+++ b/indra/newview/app_settings/shaders/class1/deferred/shadowUtil.glsl
@@ -120,6 +120,13 @@ float sampleDirectionalShadow(vec3 pos, vec3 norm, vec2 pos_screen)
 
     float shadow = 0.0f;
     vec4 spos = vec4(shadow_pos,1.0);
+
+    // if we know this point is facing away from the sun then we know it's in shadow without having to do a squirrelly shadow-map lookup
+    if (dp_directional_light <= 0.0)
+    {
+        return 0.0;
+    }
+
     if (spos.z > -shadow_clip.w)
     {   
         vec4 lpos;
@@ -174,7 +181,8 @@ float sampleDirectionalShadow(vec3 pos, vec3 norm, vec2 pos_screen)
 
         shadow /= weight;
     }
-    return shadow;
+
+    return min(dp_directional_light, shadow);
 }
 
 float sampleSpotShadow(vec3 pos, vec3 norm, int index, vec2 pos_screen)
-- 
cgit v1.2.3


From 8cb026377e1f790ba333870e2d613e0b55a4311c Mon Sep 17 00:00:00 2001
From: Graham Linden <graham@lindenlab.com>
Date: Tue, 29 Jan 2019 09:12:58 -0800
Subject: SL-10415

Tweak application of shadow bias to balance between shadow acne and Peter-panning
by using light_dir z value, per-split bias multiplier, and better jitter noise method.

Also tweak impl of spot shadow sampling func to work around issues with Intel HD shader compiler
which crashes with Intel HD 3000 driver 4459 due to shadow map array access with index using math (kwality).
---
 .../shaders/class1/deferred/shadowUtil.glsl        | 63 ++++++++++------------
 1 file changed, 28 insertions(+), 35 deletions(-)

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

diff --git a/indra/newview/app_settings/shaders/class1/deferred/shadowUtil.glsl b/indra/newview/app_settings/shaders/class1/deferred/shadowUtil.glsl
index 70568bc75f..747f1dacdd 100644
--- a/indra/newview/app_settings/shaders/class1/deferred/shadowUtil.glsl
+++ b/indra/newview/app_settings/shaders/class1/deferred/shadowUtil.glsl
@@ -48,44 +48,28 @@ uniform float shadow_bias;
 
 uniform float spot_shadow_bias;
 uniform float spot_shadow_offset;
-
+uniform float sun_up_factor;
 uniform mat4 inv_proj;
 uniform vec2 screen_res;
 
 vec3 decode_normal(vec2 enc);
 
-float pcfShadowLegacy(sampler2DShadow shadowMap, vec4 stc)
-{
-	stc.xyz /= stc.w;
-	stc.z += shadow_bias;
-		
-	stc.x = floor(stc.x*shadow_res.x + fract(stc.y*shadow_res.y*12345))/shadow_res.x; // add some chaotic jitter to X sample pos according to Y to disguise the snapping going on here
-	
-	float cs = shadow2D(shadowMap, stc.xyz).x;
-	float shadow = cs;
-	
-    shadow += shadow2D(shadowMap, stc.xyz+vec3(2.0/shadow_res.x, 1.5/shadow_res.y, 0.0)).x;
-    shadow += shadow2D(shadowMap, stc.xyz+vec3(1.0/shadow_res.x, -1.5/shadow_res.y, 0.0)).x;
-    shadow += shadow2D(shadowMap, stc.xyz+vec3(-1.0/shadow_res.x, 1.5/shadow_res.y, 0.0)).x;
-    shadow += shadow2D(shadowMap, stc.xyz+vec3(-2.0/shadow_res.x, -1.5/shadow_res.y, 0.0)).x;
-                       
-    return shadow*0.2;
-}
-
-float pcfShadow(sampler2DShadow shadowMap, vec4 stc, float bias_scale, vec2 pos_screen)
+float pcfShadow(sampler2DShadow shadowMap, vec4 stc, float bias_mul, vec2 pos_screen, vec3 light_dir)
 {
     stc.xyz /= stc.w;
-    stc.z += shadow_bias * bias_scale;
- 
-    stc.x = floor(stc.x*pos_screen.x + fract(stc.y*pos_screen.y*0.666666666))/shadow_res.x; // add some chaotic jitter to X sample pos according to Y to disguise the snapping going on here
+    stc.z += max(0.5, light_dir.z) * shadow_bias * 8.0 * bias_mul;
+        
+    stc.x = floor(stc.x*shadow_res.x + fract(stc.y*pos_screen.y*3.14159))/shadow_res.x; // add some chaotic jitter to X sample pos according to Y to disguise the snapping going on here
     
     float cs = shadow2D(shadowMap, stc.xyz).x;
-    float shadow = cs;
+    float shadow = cs * 4.0;
+    
     shadow += shadow2D(shadowMap, stc.xyz+vec3(2.0/shadow_res.x, 1.5/shadow_res.y, 0.0)).x;
     shadow += shadow2D(shadowMap, stc.xyz+vec3(1.0/shadow_res.x, -1.5/shadow_res.y, 0.0)).x;
     shadow += shadow2D(shadowMap, stc.xyz+vec3(-1.0/shadow_res.x, 1.5/shadow_res.y, 0.0)).x;
     shadow += shadow2D(shadowMap, stc.xyz+vec3(-2.0/shadow_res.x, -1.5/shadow_res.y, 0.0)).x;
-    return shadow*0.2;
+                       
+    return shadow*0.125;
 }
 
 float pcfSpotShadow(sampler2DShadow shadowMap, vec4 stc, float bias_scale, vec2 pos_screen)
@@ -111,10 +95,10 @@ float sampleDirectionalShadow(vec3 pos, vec3 norm, vec2 pos_screen)
 {
     float dp_sun = max(0.0, dot(sun_dir.xyz, norm));
     float dp_moon = max(0.0, dot(moon_dir.xyz, norm));
-    float dp_directional_light = max(dp_sun,dp_moon);
+    float dp_directional_light = (sun_up_factor > 0) ? dp_sun : dp_moon;
           dp_directional_light = clamp(dp_directional_light, 0.0, 1.0);
 
-    vec3 light_dir = (dp_moon > dp_sun) ? moon_dir : sun_dir;
+    vec3 light_dir = (sun_up_factor > 0) ? sun_dir : moon_dir;
     vec3 offset = light_dir * (1.0-dp_directional_light);
     vec3 shadow_pos = pos.xyz + (offset * shadow_bias);
 
@@ -141,7 +125,7 @@ float sampleDirectionalShadow(vec3 pos, vec3 norm, vec2 pos_screen)
             
             float w = 1.0;
             w -= max(spos.z-far_split.z, 0.0)/transition_domain.z;
-            shadow += pcfShadowLegacy(shadowMap3, lpos)*w;
+            shadow += pcfShadow(shadowMap3, lpos, 0.25, pos_screen, light_dir)*w;
             weight += w;
             shadow += max((pos.z+shadow_clip.z)/(shadow_clip.z-shadow_clip.w)*2.0-1.0, 0.0);
         }
@@ -153,7 +137,7 @@ float sampleDirectionalShadow(vec3 pos, vec3 norm, vec2 pos_screen)
             float w = 1.0;
             w -= max(spos.z-far_split.y, 0.0)/transition_domain.y;
             w -= max(near_split.z-spos.z, 0.0)/transition_domain.z;
-            shadow += pcfShadowLegacy(shadowMap2, lpos)*w;
+            shadow += pcfShadow(shadowMap2, lpos, 0.5, pos_screen, light_dir)*w;
             weight += w;
         }
 
@@ -164,7 +148,7 @@ float sampleDirectionalShadow(vec3 pos, vec3 norm, vec2 pos_screen)
             float w = 1.0;
             w -= max(spos.z-far_split.x, 0.0)/transition_domain.x;
             w -= max(near_split.y-spos.z, 0.0)/transition_domain.y;
-            shadow += pcfShadowLegacy(shadowMap1, lpos)*w;
+            shadow += pcfShadow(shadowMap1, lpos, 0.75, pos_screen, light_dir)*w;
             weight += w;
         }
 
@@ -175,14 +159,15 @@ float sampleDirectionalShadow(vec3 pos, vec3 norm, vec2 pos_screen)
             float w = 1.0;
             w -= max(near_split.x-spos.z, 0.0)/transition_domain.x;
                 
-            shadow += pcfShadowLegacy(shadowMap0, lpos)*w;
+            shadow += pcfShadow(shadowMap0, lpos, 1.0, pos_screen, light_dir)*w;
             weight += w;
         }
 
         shadow /= weight;
     }
 
-    return min(dp_directional_light, shadow);
+    shadow = min(dp_directional_light, shadow);
+    return shadow;
 }
 
 float sampleSpotShadow(vec3 pos, vec3 norm, int index, vec2 pos_screen)
@@ -201,11 +186,19 @@ float sampleSpotShadow(vec3 pos, vec3 norm, int index, vec2 pos_screen)
         float weight = 0.0;
 
         {
-            lpos = shadow_matrix[4 + index]*spos;
             float w = 1.0;
             w -= max(spos.z-far_split.z, 0.0)/transition_domain.z;
-        
-            shadow += pcfSpotShadow((index == 0) ? shadowMap4 : shadowMap5, lpos, 0.8, spos.xy)*w;
+
+            if (index == 0)
+            {        
+                lpos = shadow_matrix[4]*spos;
+                shadow += pcfSpotShadow(shadowMap4, lpos, 0.8, spos.xy)*w;
+            }
+            else
+            {
+                lpos = shadow_matrix[5]*spos;
+                shadow += pcfSpotShadow(shadowMap5, lpos, 0.8, spos.xy)*w;
+            }
             weight += w;
             shadow += max((pos.z+shadow_clip.z)/(shadow_clip.z-shadow_clip.w)*2.0-1.0, 0.0);
         }
-- 
cgit v1.2.3


From 38f69533780943b432edaac212475bea5fd013b6 Mon Sep 17 00:00:00 2001
From: Graham Linden <graham@lindenlab.com>
Date: Tue, 29 Jan 2019 16:18:16 -0800
Subject: Roll back fix for 10415 due to knock-on that must needs be tamped
 down.

---
 .../shaders/class1/deferred/shadowUtil.glsl        | 63 ++++++++++++----------
 1 file changed, 35 insertions(+), 28 deletions(-)

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

diff --git a/indra/newview/app_settings/shaders/class1/deferred/shadowUtil.glsl b/indra/newview/app_settings/shaders/class1/deferred/shadowUtil.glsl
index 747f1dacdd..70568bc75f 100644
--- a/indra/newview/app_settings/shaders/class1/deferred/shadowUtil.glsl
+++ b/indra/newview/app_settings/shaders/class1/deferred/shadowUtil.glsl
@@ -48,28 +48,44 @@ uniform float shadow_bias;
 
 uniform float spot_shadow_bias;
 uniform float spot_shadow_offset;
-uniform float sun_up_factor;
+
 uniform mat4 inv_proj;
 uniform vec2 screen_res;
 
 vec3 decode_normal(vec2 enc);
 
-float pcfShadow(sampler2DShadow shadowMap, vec4 stc, float bias_mul, vec2 pos_screen, vec3 light_dir)
+float pcfShadowLegacy(sampler2DShadow shadowMap, vec4 stc)
+{
+	stc.xyz /= stc.w;
+	stc.z += shadow_bias;
+		
+	stc.x = floor(stc.x*shadow_res.x + fract(stc.y*shadow_res.y*12345))/shadow_res.x; // add some chaotic jitter to X sample pos according to Y to disguise the snapping going on here
+	
+	float cs = shadow2D(shadowMap, stc.xyz).x;
+	float shadow = cs;
+	
+    shadow += shadow2D(shadowMap, stc.xyz+vec3(2.0/shadow_res.x, 1.5/shadow_res.y, 0.0)).x;
+    shadow += shadow2D(shadowMap, stc.xyz+vec3(1.0/shadow_res.x, -1.5/shadow_res.y, 0.0)).x;
+    shadow += shadow2D(shadowMap, stc.xyz+vec3(-1.0/shadow_res.x, 1.5/shadow_res.y, 0.0)).x;
+    shadow += shadow2D(shadowMap, stc.xyz+vec3(-2.0/shadow_res.x, -1.5/shadow_res.y, 0.0)).x;
+                       
+    return shadow*0.2;
+}
+
+float pcfShadow(sampler2DShadow shadowMap, vec4 stc, float bias_scale, vec2 pos_screen)
 {
     stc.xyz /= stc.w;
-    stc.z += max(0.5, light_dir.z) * shadow_bias * 8.0 * bias_mul;
-        
-    stc.x = floor(stc.x*shadow_res.x + fract(stc.y*pos_screen.y*3.14159))/shadow_res.x; // add some chaotic jitter to X sample pos according to Y to disguise the snapping going on here
+    stc.z += shadow_bias * bias_scale;
+ 
+    stc.x = floor(stc.x*pos_screen.x + fract(stc.y*pos_screen.y*0.666666666))/shadow_res.x; // add some chaotic jitter to X sample pos according to Y to disguise the snapping going on here
     
     float cs = shadow2D(shadowMap, stc.xyz).x;
-    float shadow = cs * 4.0;
-    
+    float shadow = cs;
     shadow += shadow2D(shadowMap, stc.xyz+vec3(2.0/shadow_res.x, 1.5/shadow_res.y, 0.0)).x;
     shadow += shadow2D(shadowMap, stc.xyz+vec3(1.0/shadow_res.x, -1.5/shadow_res.y, 0.0)).x;
     shadow += shadow2D(shadowMap, stc.xyz+vec3(-1.0/shadow_res.x, 1.5/shadow_res.y, 0.0)).x;
     shadow += shadow2D(shadowMap, stc.xyz+vec3(-2.0/shadow_res.x, -1.5/shadow_res.y, 0.0)).x;
-                       
-    return shadow*0.125;
+    return shadow*0.2;
 }
 
 float pcfSpotShadow(sampler2DShadow shadowMap, vec4 stc, float bias_scale, vec2 pos_screen)
@@ -95,10 +111,10 @@ float sampleDirectionalShadow(vec3 pos, vec3 norm, vec2 pos_screen)
 {
     float dp_sun = max(0.0, dot(sun_dir.xyz, norm));
     float dp_moon = max(0.0, dot(moon_dir.xyz, norm));
-    float dp_directional_light = (sun_up_factor > 0) ? dp_sun : dp_moon;
+    float dp_directional_light = max(dp_sun,dp_moon);
           dp_directional_light = clamp(dp_directional_light, 0.0, 1.0);
 
-    vec3 light_dir = (sun_up_factor > 0) ? sun_dir : moon_dir;
+    vec3 light_dir = (dp_moon > dp_sun) ? moon_dir : sun_dir;
     vec3 offset = light_dir * (1.0-dp_directional_light);
     vec3 shadow_pos = pos.xyz + (offset * shadow_bias);
 
@@ -125,7 +141,7 @@ float sampleDirectionalShadow(vec3 pos, vec3 norm, vec2 pos_screen)
             
             float w = 1.0;
             w -= max(spos.z-far_split.z, 0.0)/transition_domain.z;
-            shadow += pcfShadow(shadowMap3, lpos, 0.25, pos_screen, light_dir)*w;
+            shadow += pcfShadowLegacy(shadowMap3, lpos)*w;
             weight += w;
             shadow += max((pos.z+shadow_clip.z)/(shadow_clip.z-shadow_clip.w)*2.0-1.0, 0.0);
         }
@@ -137,7 +153,7 @@ float sampleDirectionalShadow(vec3 pos, vec3 norm, vec2 pos_screen)
             float w = 1.0;
             w -= max(spos.z-far_split.y, 0.0)/transition_domain.y;
             w -= max(near_split.z-spos.z, 0.0)/transition_domain.z;
-            shadow += pcfShadow(shadowMap2, lpos, 0.5, pos_screen, light_dir)*w;
+            shadow += pcfShadowLegacy(shadowMap2, lpos)*w;
             weight += w;
         }
 
@@ -148,7 +164,7 @@ float sampleDirectionalShadow(vec3 pos, vec3 norm, vec2 pos_screen)
             float w = 1.0;
             w -= max(spos.z-far_split.x, 0.0)/transition_domain.x;
             w -= max(near_split.y-spos.z, 0.0)/transition_domain.y;
-            shadow += pcfShadow(shadowMap1, lpos, 0.75, pos_screen, light_dir)*w;
+            shadow += pcfShadowLegacy(shadowMap1, lpos)*w;
             weight += w;
         }
 
@@ -159,15 +175,14 @@ float sampleDirectionalShadow(vec3 pos, vec3 norm, vec2 pos_screen)
             float w = 1.0;
             w -= max(near_split.x-spos.z, 0.0)/transition_domain.x;
                 
-            shadow += pcfShadow(shadowMap0, lpos, 1.0, pos_screen, light_dir)*w;
+            shadow += pcfShadowLegacy(shadowMap0, lpos)*w;
             weight += w;
         }
 
         shadow /= weight;
     }
 
-    shadow = min(dp_directional_light, shadow);
-    return shadow;
+    return min(dp_directional_light, shadow);
 }
 
 float sampleSpotShadow(vec3 pos, vec3 norm, int index, vec2 pos_screen)
@@ -186,19 +201,11 @@ float sampleSpotShadow(vec3 pos, vec3 norm, int index, vec2 pos_screen)
         float weight = 0.0;
 
         {
+            lpos = shadow_matrix[4 + index]*spos;
             float w = 1.0;
             w -= max(spos.z-far_split.z, 0.0)/transition_domain.z;
-
-            if (index == 0)
-            {        
-                lpos = shadow_matrix[4]*spos;
-                shadow += pcfSpotShadow(shadowMap4, lpos, 0.8, spos.xy)*w;
-            }
-            else
-            {
-                lpos = shadow_matrix[5]*spos;
-                shadow += pcfSpotShadow(shadowMap5, lpos, 0.8, spos.xy)*w;
-            }
+        
+            shadow += pcfSpotShadow((index == 0) ? shadowMap4 : shadowMap5, lpos, 0.8, spos.xy)*w;
             weight += w;
             shadow += max((pos.z+shadow_clip.z)/(shadow_clip.z-shadow_clip.w)*2.0-1.0, 0.0);
         }
-- 
cgit v1.2.3


From acbc7f4cddd6ad999c2bc7690c10b85a414a8102 Mon Sep 17 00:00:00 2001
From: Graham Linden <graham@lindenlab.com>
Date: Wed, 30 Jan 2019 08:37:07 -0800
Subject: SL-10415, SL-10434

Further tweaking of directional shadow sampling to balance between peter-panning and shadow acne.

Move stars to just this side of the sky some to reduce parallax.

Remove decodeNormF and uses of decode_normal in favor of unified use of getNorm
(try to help the Intel HD x000 compiler learn to link correctly).
---
 .../shaders/class1/deferred/shadowUtil.glsl        | 60 ++++++++++------------
 1 file changed, 27 insertions(+), 33 deletions(-)

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

diff --git a/indra/newview/app_settings/shaders/class1/deferred/shadowUtil.glsl b/indra/newview/app_settings/shaders/class1/deferred/shadowUtil.glsl
index 70568bc75f..cef9938192 100644
--- a/indra/newview/app_settings/shaders/class1/deferred/shadowUtil.glsl
+++ b/indra/newview/app_settings/shaders/class1/deferred/shadowUtil.glsl
@@ -48,44 +48,29 @@ uniform float shadow_bias;
 
 uniform float spot_shadow_bias;
 uniform float spot_shadow_offset;
-
+uniform float sun_up_factor;
 uniform mat4 inv_proj;
 uniform vec2 screen_res;
 
 vec3 decode_normal(vec2 enc);
 
-float pcfShadowLegacy(sampler2DShadow shadowMap, vec4 stc)
-{
-	stc.xyz /= stc.w;
-	stc.z += shadow_bias;
-		
-	stc.x = floor(stc.x*shadow_res.x + fract(stc.y*shadow_res.y*12345))/shadow_res.x; // add some chaotic jitter to X sample pos according to Y to disguise the snapping going on here
-	
-	float cs = shadow2D(shadowMap, stc.xyz).x;
-	float shadow = cs;
-	
-    shadow += shadow2D(shadowMap, stc.xyz+vec3(2.0/shadow_res.x, 1.5/shadow_res.y, 0.0)).x;
-    shadow += shadow2D(shadowMap, stc.xyz+vec3(1.0/shadow_res.x, -1.5/shadow_res.y, 0.0)).x;
-    shadow += shadow2D(shadowMap, stc.xyz+vec3(-1.0/shadow_res.x, 1.5/shadow_res.y, 0.0)).x;
-    shadow += shadow2D(shadowMap, stc.xyz+vec3(-2.0/shadow_res.x, -1.5/shadow_res.y, 0.0)).x;
-                       
-    return shadow*0.2;
-}
-
-float pcfShadow(sampler2DShadow shadowMap, vec4 stc, float bias_scale, vec2 pos_screen)
+float pcfShadow(sampler2DShadow shadowMap, vec4 stc, float bias_mul, vec2 pos_screen, vec3 light_dir)
 {
     stc.xyz /= stc.w;
-    stc.z += shadow_bias * bias_scale;
- 
-    stc.x = floor(stc.x*pos_screen.x + fract(stc.y*pos_screen.y*0.666666666))/shadow_res.x; // add some chaotic jitter to X sample pos according to Y to disguise the snapping going on here
+    float offset = max(0.75, light_dir.z);
+    stc.z += offset * shadow_bias * 3.33 * bias_mul;
+        
+    stc.x = floor(stc.x*shadow_res.x + fract(stc.y*pos_screen.y*3.14159))/shadow_res.x; // add some chaotic jitter to X sample pos according to Y to disguise the snapping going on here
     
     float cs = shadow2D(shadowMap, stc.xyz).x;
-    float shadow = cs;
+    float shadow = cs * 4.0;
+    
     shadow += shadow2D(shadowMap, stc.xyz+vec3(2.0/shadow_res.x, 1.5/shadow_res.y, 0.0)).x;
     shadow += shadow2D(shadowMap, stc.xyz+vec3(1.0/shadow_res.x, -1.5/shadow_res.y, 0.0)).x;
     shadow += shadow2D(shadowMap, stc.xyz+vec3(-1.0/shadow_res.x, 1.5/shadow_res.y, 0.0)).x;
     shadow += shadow2D(shadowMap, stc.xyz+vec3(-2.0/shadow_res.x, -1.5/shadow_res.y, 0.0)).x;
-    return shadow*0.2;
+                       
+    return shadow*0.125;
 }
 
 float pcfSpotShadow(sampler2DShadow shadowMap, vec4 stc, float bias_scale, vec2 pos_screen)
@@ -141,7 +126,7 @@ float sampleDirectionalShadow(vec3 pos, vec3 norm, vec2 pos_screen)
             
             float w = 1.0;
             w -= max(spos.z-far_split.z, 0.0)/transition_domain.z;
-            shadow += pcfShadowLegacy(shadowMap3, lpos)*w;
+            shadow += pcfShadow(shadowMap3, lpos, 1.0, pos_screen, light_dir)*w;
             weight += w;
             shadow += max((pos.z+shadow_clip.z)/(shadow_clip.z-shadow_clip.w)*2.0-1.0, 0.0);
         }
@@ -153,7 +138,7 @@ float sampleDirectionalShadow(vec3 pos, vec3 norm, vec2 pos_screen)
             float w = 1.0;
             w -= max(spos.z-far_split.y, 0.0)/transition_domain.y;
             w -= max(near_split.z-spos.z, 0.0)/transition_domain.z;
-            shadow += pcfShadowLegacy(shadowMap2, lpos)*w;
+            shadow += pcfShadow(shadowMap2, lpos, 1.0, pos_screen, light_dir)*w;
             weight += w;
         }
 
@@ -164,7 +149,7 @@ float sampleDirectionalShadow(vec3 pos, vec3 norm, vec2 pos_screen)
             float w = 1.0;
             w -= max(spos.z-far_split.x, 0.0)/transition_domain.x;
             w -= max(near_split.y-spos.z, 0.0)/transition_domain.y;
-            shadow += pcfShadowLegacy(shadowMap1, lpos)*w;
+            shadow += pcfShadow(shadowMap1, lpos, 1.0, pos_screen, light_dir)*w;
             weight += w;
         }
 
@@ -175,14 +160,15 @@ float sampleDirectionalShadow(vec3 pos, vec3 norm, vec2 pos_screen)
             float w = 1.0;
             w -= max(near_split.x-spos.z, 0.0)/transition_domain.x;
                 
-            shadow += pcfShadowLegacy(shadowMap0, lpos)*w;
+            shadow += pcfShadow(shadowMap0, lpos, 1.0, pos_screen, light_dir)*w;
             weight += w;
         }
 
         shadow /= weight;
     }
 
-    return min(dp_directional_light, shadow);
+    shadow = min(dp_directional_light, shadow);
+    return shadow;
 }
 
 float sampleSpotShadow(vec3 pos, vec3 norm, int index, vec2 pos_screen)
@@ -201,11 +187,19 @@ float sampleSpotShadow(vec3 pos, vec3 norm, int index, vec2 pos_screen)
         float weight = 0.0;
 
         {
-            lpos = shadow_matrix[4 + index]*spos;
             float w = 1.0;
             w -= max(spos.z-far_split.z, 0.0)/transition_domain.z;
-        
-            shadow += pcfSpotShadow((index == 0) ? shadowMap4 : shadowMap5, lpos, 0.8, spos.xy)*w;
+
+            if (index == 0)
+            {        
+                lpos = shadow_matrix[4]*spos;
+                shadow += pcfSpotShadow(shadowMap4, lpos, 0.8, spos.xy)*w;
+            }
+            else
+            {
+                lpos = shadow_matrix[5]*spos;
+                shadow += pcfSpotShadow(shadowMap5, lpos, 0.8, spos.xy)*w;
+            }
             weight += w;
             shadow += max((pos.z+shadow_clip.z)/(shadow_clip.z-shadow_clip.w)*2.0-1.0, 0.0);
         }
-- 
cgit v1.2.3


From deb6110098569fb90ca7e5073c2e98fabbb23a82 Mon Sep 17 00:00:00 2001
From: Graham Linden <graham@lindenlab.com>
Date: Wed, 30 Jan 2019 13:26:35 -0800
Subject: Eliminate helper GLSL modules depending on further GLSL modules to
 give Intel HD x000 compiler a fighting chance.

More WIP for edge-specific water shader for 9996.
---
 .../newview/app_settings/shaders/class1/deferred/shadowUtil.glsl  | 8 --------
 1 file changed, 8 deletions(-)

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

diff --git a/indra/newview/app_settings/shaders/class1/deferred/shadowUtil.glsl b/indra/newview/app_settings/shaders/class1/deferred/shadowUtil.glsl
index cef9938192..843901ea6a 100644
--- a/indra/newview/app_settings/shaders/class1/deferred/shadowUtil.glsl
+++ b/indra/newview/app_settings/shaders/class1/deferred/shadowUtil.glsl
@@ -25,7 +25,6 @@
 
 uniform sampler2DRect   normalMap;
 uniform sampler2DRect   depthMap;
-uniform sampler2D       noiseMap;
 uniform sampler2DShadow shadowMap0;
 uniform sampler2DShadow shadowMap1;
 uniform sampler2DShadow shadowMap2;
@@ -33,11 +32,6 @@ uniform sampler2DShadow shadowMap3;
 uniform sampler2DShadow shadowMap4;
 uniform sampler2DShadow shadowMap5;
 
-uniform float ssao_radius;
-uniform float ssao_max_radius;
-uniform float ssao_factor;
-uniform float ssao_factor_inv;
-
 uniform vec3 sun_dir;
 uniform vec3 moon_dir;
 uniform vec2 shadow_res;
@@ -52,8 +46,6 @@ uniform float sun_up_factor;
 uniform mat4 inv_proj;
 uniform vec2 screen_res;
 
-vec3 decode_normal(vec2 enc);
-
 float pcfShadow(sampler2DShadow shadowMap, vec4 stc, float bias_mul, vec2 pos_screen, vec3 light_dir)
 {
     stc.xyz /= stc.w;
-- 
cgit v1.2.3


From 5a8610ccb7e1f5a0e4d54170ac922e6820ce3acb Mon Sep 17 00:00:00 2001
From: Graham Linden <graham@lindenlab.com>
Date: Fri, 1 Feb 2019 13:41:31 -0800
Subject: SL-9996, SL-1130, SL-5546

Fix bug with setting texture matrix for rigged mesh.

Fix z-fighting between sea and sky in ALM by cheating sky, stars, and moon using gl_FragDepth.

Fix handling of atmospheric haze glow w.r.t independent sun/moon positioning
(we can no longer depend on them being mutex to each other).
---
 indra/newview/app_settings/shaders/class1/deferred/shadowUtil.glsl | 1 -
 1 file changed, 1 deletion(-)

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

diff --git a/indra/newview/app_settings/shaders/class1/deferred/shadowUtil.glsl b/indra/newview/app_settings/shaders/class1/deferred/shadowUtil.glsl
index 843901ea6a..6c509b7616 100644
--- a/indra/newview/app_settings/shaders/class1/deferred/shadowUtil.glsl
+++ b/indra/newview/app_settings/shaders/class1/deferred/shadowUtil.glsl
@@ -42,7 +42,6 @@ uniform float shadow_bias;
 
 uniform float spot_shadow_bias;
 uniform float spot_shadow_offset;
-uniform float sun_up_factor;
 uniform mat4 inv_proj;
 uniform vec2 screen_res;
 
-- 
cgit v1.2.3


From 8890c3238ab4ae8bbf1bc123284f9c6d4db4f9d6 Mon Sep 17 00:00:00 2001
From: Graham Linden <graham@lindenlab.com>
Date: Wed, 6 Feb 2019 16:42:23 -0800
Subject: SL-10478

Fix side-effects of having both sun and moon as potential directional light contributors.
We pass an int to the shader indicating which to prefer instead of making per-pixel decisions
and pass the moonlight color/di independently.

Obsolete llsettingssky fade color which was unused elsewhere and cached for no reason.
---
 .../app_settings/shaders/class1/deferred/shadowUtil.glsl  | 15 ++++++++-------
 1 file changed, 8 insertions(+), 7 deletions(-)

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

diff --git a/indra/newview/app_settings/shaders/class1/deferred/shadowUtil.glsl b/indra/newview/app_settings/shaders/class1/deferred/shadowUtil.glsl
index 6c509b7616..39fdd9ec44 100644
--- a/indra/newview/app_settings/shaders/class1/deferred/shadowUtil.glsl
+++ b/indra/newview/app_settings/shaders/class1/deferred/shadowUtil.glsl
@@ -44,12 +44,13 @@ uniform float spot_shadow_bias;
 uniform float spot_shadow_offset;
 uniform mat4 inv_proj;
 uniform vec2 screen_res;
+int sun_up_factor;
 
 float pcfShadow(sampler2DShadow shadowMap, vec4 stc, float bias_mul, vec2 pos_screen, vec3 light_dir)
 {
     stc.xyz /= stc.w;
     float offset = max(0.75, light_dir.z);
-    stc.z += offset * shadow_bias * 3.33 * bias_mul;
+    stc.z += offset * shadow_bias * bias_mul;
         
     stc.x = floor(stc.x*shadow_res.x + fract(stc.y*pos_screen.y*3.14159))/shadow_res.x; // add some chaotic jitter to X sample pos according to Y to disguise the snapping going on here
     
@@ -85,14 +86,14 @@ float pcfSpotShadow(sampler2DShadow shadowMap, vec4 stc, float bias_scale, vec2
 
 float sampleDirectionalShadow(vec3 pos, vec3 norm, vec2 pos_screen)
 {
+    vec3 light_dir = (sun_up_factor == 1) ? sun_dir : moon_dir;
+
     float dp_sun = max(0.0, dot(sun_dir.xyz, norm));
     float dp_moon = max(0.0, dot(moon_dir.xyz, norm));
     float dp_directional_light = max(dp_sun,dp_moon);
           dp_directional_light = clamp(dp_directional_light, 0.0, 1.0);
 
-    vec3 light_dir = (dp_moon > dp_sun) ? moon_dir : sun_dir;
-    vec3 offset = light_dir * (1.0-dp_directional_light);
-    vec3 shadow_pos = pos.xyz + (offset * shadow_bias);
+    vec3 shadow_pos = pos.xyz;
 
     float shadow = 0.0f;
     vec4 spos = vec4(shadow_pos,1.0);
@@ -117,7 +118,7 @@ float sampleDirectionalShadow(vec3 pos, vec3 norm, vec2 pos_screen)
             
             float w = 1.0;
             w -= max(spos.z-far_split.z, 0.0)/transition_domain.z;
-            shadow += pcfShadow(shadowMap3, lpos, 1.0, pos_screen, light_dir)*w;
+            shadow += pcfShadow(shadowMap3, lpos, 0.5, pos_screen, light_dir)*w;
             weight += w;
             shadow += max((pos.z+shadow_clip.z)/(shadow_clip.z-shadow_clip.w)*2.0-1.0, 0.0);
         }
@@ -129,7 +130,7 @@ float sampleDirectionalShadow(vec3 pos, vec3 norm, vec2 pos_screen)
             float w = 1.0;
             w -= max(spos.z-far_split.y, 0.0)/transition_domain.y;
             w -= max(near_split.z-spos.z, 0.0)/transition_domain.z;
-            shadow += pcfShadow(shadowMap2, lpos, 1.0, pos_screen, light_dir)*w;
+            shadow += pcfShadow(shadowMap2, lpos, 0.75, pos_screen, light_dir)*w;
             weight += w;
         }
 
@@ -140,7 +141,7 @@ float sampleDirectionalShadow(vec3 pos, vec3 norm, vec2 pos_screen)
             float w = 1.0;
             w -= max(spos.z-far_split.x, 0.0)/transition_domain.x;
             w -= max(near_split.y-spos.z, 0.0)/transition_domain.y;
-            shadow += pcfShadow(shadowMap1, lpos, 1.0, pos_screen, light_dir)*w;
+            shadow += pcfShadow(shadowMap1, lpos, 0.88, pos_screen, light_dir)*w;
             weight += w;
         }
 
-- 
cgit v1.2.3


From 9f2a0d2a082495ce878f0eb0d7348b181939d348 Mon Sep 17 00:00:00 2001
From: Graham Linden <graham@lindenlab.com>
Date: Fri, 8 Feb 2019 10:17:39 -0800
Subject: SL-10415

Another pass at playing with shadow_offset/bias to balance between peter-panning and shadow acne while sun and/or moon are near the horizon.
---
 .../shaders/class1/deferred/shadowUtil.glsl        | 38 +++++++++-------------
 1 file changed, 15 insertions(+), 23 deletions(-)

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

diff --git a/indra/newview/app_settings/shaders/class1/deferred/shadowUtil.glsl b/indra/newview/app_settings/shaders/class1/deferred/shadowUtil.glsl
index 39fdd9ec44..e762871ba1 100644
--- a/indra/newview/app_settings/shaders/class1/deferred/shadowUtil.glsl
+++ b/indra/newview/app_settings/shaders/class1/deferred/shadowUtil.glsl
@@ -39,20 +39,18 @@ uniform vec2 proj_shadow_res;
 uniform mat4 shadow_matrix[6];
 uniform vec4 shadow_clip;
 uniform float shadow_bias;
-
+uniform float shadow_offset;
 uniform float spot_shadow_bias;
 uniform float spot_shadow_offset;
 uniform mat4 inv_proj;
 uniform vec2 screen_res;
-int sun_up_factor;
+uniform int sun_up_factor;
 
-float pcfShadow(sampler2DShadow shadowMap, vec4 stc, float bias_mul, vec2 pos_screen, vec3 light_dir)
+float pcfShadow(sampler2DShadow shadowMap, vec3 norm, vec4 stc, float bias_mul, vec2 pos_screen, vec3 light_dir)
 {
     stc.xyz /= stc.w;
-    float offset = max(0.75, light_dir.z);
-    stc.z += offset * shadow_bias * bias_mul;
-        
-    stc.x = floor(stc.x*shadow_res.x + fract(stc.y*pos_screen.y*3.14159))/shadow_res.x; // add some chaotic jitter to X sample pos according to Y to disguise the snapping going on here
+    stc.z += shadow_bias * bias_mul* 2.0;
+    stc.x = floor(stc.x*shadow_res.x + fract(stc.y*pos_screen.y*pos_screen.x))/shadow_res.x; // add some chaotic jitter to X sample pos according to Y to disguise the snapping going on here
     
     float cs = shadow2D(shadowMap, stc.xyz).x;
     float shadow = cs * 4.0;
@@ -62,7 +60,7 @@ float pcfShadow(sampler2DShadow shadowMap, vec4 stc, float bias_mul, vec2 pos_sc
     shadow += shadow2D(shadowMap, stc.xyz+vec3(-1.0/shadow_res.x, 1.5/shadow_res.y, 0.0)).x;
     shadow += shadow2D(shadowMap, stc.xyz+vec3(-2.0/shadow_res.x, -1.5/shadow_res.y, 0.0)).x;
                        
-    return shadow*0.125;
+    return shadow * 0.125;
 }
 
 float pcfSpotShadow(sampler2DShadow shadowMap, vec4 stc, float bias_scale, vec2 pos_screen)
@@ -86,23 +84,18 @@ float pcfSpotShadow(sampler2DShadow shadowMap, vec4 stc, float bias_scale, vec2
 
 float sampleDirectionalShadow(vec3 pos, vec3 norm, vec2 pos_screen)
 {
+    float shadow = 0.0f;
     vec3 light_dir = (sun_up_factor == 1) ? sun_dir : moon_dir;
 
     float dp_sun = max(0.0, dot(sun_dir.xyz, norm));
     float dp_moon = max(0.0, dot(moon_dir.xyz, norm));
-    float dp_directional_light = max(dp_sun,dp_moon);
+    float dp_directional_light = (sun_up_factor == 1) ? dp_sun : dp_moon;
           dp_directional_light = clamp(dp_directional_light, 0.0, 1.0);
 
     vec3 shadow_pos = pos.xyz;
-
-    float shadow = 0.0f;
-    vec4 spos = vec4(shadow_pos,1.0);
-
-    // if we know this point is facing away from the sun then we know it's in shadow without having to do a squirrelly shadow-map lookup
-    if (dp_directional_light <= 0.0)
-    {
-        return 0.0;
-    }
+    vec3 offset = abs(light_dir.xyz) * (1.0 - dp_directional_light* 0.8);
+    shadow_pos += offset;
+    vec4 spos = vec4(shadow_pos.xyz, 1.0);
 
     if (spos.z > -shadow_clip.w)
     {   
@@ -118,7 +111,7 @@ float sampleDirectionalShadow(vec3 pos, vec3 norm, vec2 pos_screen)
             
             float w = 1.0;
             w -= max(spos.z-far_split.z, 0.0)/transition_domain.z;
-            shadow += pcfShadow(shadowMap3, lpos, 0.5, pos_screen, light_dir)*w;
+            shadow += pcfShadow(shadowMap3, norm, lpos, 4.0, pos_screen, light_dir)*w;
             weight += w;
             shadow += max((pos.z+shadow_clip.z)/(shadow_clip.z-shadow_clip.w)*2.0-1.0, 0.0);
         }
@@ -130,7 +123,7 @@ float sampleDirectionalShadow(vec3 pos, vec3 norm, vec2 pos_screen)
             float w = 1.0;
             w -= max(spos.z-far_split.y, 0.0)/transition_domain.y;
             w -= max(near_split.z-spos.z, 0.0)/transition_domain.z;
-            shadow += pcfShadow(shadowMap2, lpos, 0.75, pos_screen, light_dir)*w;
+            shadow += pcfShadow(shadowMap2, norm, lpos, 2.0, pos_screen, light_dir)*w;
             weight += w;
         }
 
@@ -141,7 +134,7 @@ float sampleDirectionalShadow(vec3 pos, vec3 norm, vec2 pos_screen)
             float w = 1.0;
             w -= max(spos.z-far_split.x, 0.0)/transition_domain.x;
             w -= max(near_split.y-spos.z, 0.0)/transition_domain.y;
-            shadow += pcfShadow(shadowMap1, lpos, 0.88, pos_screen, light_dir)*w;
+            shadow += pcfShadow(shadowMap1, norm, lpos, 1.0, pos_screen, light_dir)*w;
             weight += w;
         }
 
@@ -152,14 +145,13 @@ float sampleDirectionalShadow(vec3 pos, vec3 norm, vec2 pos_screen)
             float w = 1.0;
             w -= max(near_split.x-spos.z, 0.0)/transition_domain.x;
                 
-            shadow += pcfShadow(shadowMap0, lpos, 1.0, pos_screen, light_dir)*w;
+            shadow += pcfShadow(shadowMap0, norm, lpos, 1.0, pos_screen, light_dir)*w;
             weight += w;
         }
 
         shadow /= weight;
     }
 
-    shadow = min(dp_directional_light, shadow);
     return shadow;
 }
 
-- 
cgit v1.2.3


From 1bbf62652c0b3cfdb2046ef5a3d632f56160bb8d Mon Sep 17 00:00:00 2001
From: Graham Linden <graham@lindenlab.com>
Date: Fri, 8 Feb 2019 13:59:13 -0800
Subject: SL-10457

Make area beyond far split of directional light unshadowed again.
---
 indra/newview/app_settings/shaders/class1/deferred/shadowUtil.glsl | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

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

diff --git a/indra/newview/app_settings/shaders/class1/deferred/shadowUtil.glsl b/indra/newview/app_settings/shaders/class1/deferred/shadowUtil.glsl
index e762871ba1..d04ac6851a 100644
--- a/indra/newview/app_settings/shaders/class1/deferred/shadowUtil.glsl
+++ b/indra/newview/app_settings/shaders/class1/deferred/shadowUtil.glsl
@@ -151,13 +151,16 @@ float sampleDirectionalShadow(vec3 pos, vec3 norm, vec2 pos_screen)
 
         shadow /= weight;
     }
-
+    else
+    {
+        return 1.0f; // lit beyond the far split...
+    }
     return shadow;
 }
 
 float sampleSpotShadow(vec3 pos, vec3 norm, int index, vec2 pos_screen)
 {
-    float shadow = 0.0f;
+    float shadow = 1.0f;
     pos += norm * spot_shadow_offset;
 
     vec4 spos = vec4(pos,1.0);
-- 
cgit v1.2.3


From e3c376d3812f8a2f3868f5baa71fffc785f35911 Mon Sep 17 00:00:00 2001
From: Graham Linden <graham@lindenlab.com>
Date: Thu, 14 Feb 2019 16:33:20 -0800
Subject: SL-10552

Fix view-dependent peter-panning from incorrectly biased shadow pos offset.
---
 .../app_settings/shaders/class1/deferred/shadowUtil.glsl       | 10 ++++------
 1 file changed, 4 insertions(+), 6 deletions(-)

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

diff --git a/indra/newview/app_settings/shaders/class1/deferred/shadowUtil.glsl b/indra/newview/app_settings/shaders/class1/deferred/shadowUtil.glsl
index d04ac6851a..5cc24475e3 100644
--- a/indra/newview/app_settings/shaders/class1/deferred/shadowUtil.glsl
+++ b/indra/newview/app_settings/shaders/class1/deferred/shadowUtil.glsl
@@ -81,20 +81,18 @@ float pcfSpotShadow(sampler2DShadow shadowMap, vec4 stc, float bias_scale, vec2
     shadow += shadow2D(shadowMap, stc.xyz+vec3(-off.x*2.0, -off.y, 0.0)).x;
     return shadow*0.2;
 }
-
 float sampleDirectionalShadow(vec3 pos, vec3 norm, vec2 pos_screen)
 {
     float shadow = 0.0f;
-    vec3 light_dir = (sun_up_factor == 1) ? sun_dir : moon_dir;
+    vec3 light_dir = normalize((sun_up_factor == 1) ? sun_dir : moon_dir);
 
-    float dp_sun = max(0.0, dot(sun_dir.xyz, norm));
-    float dp_moon = max(0.0, dot(moon_dir.xyz, norm));
-    float dp_directional_light = (sun_up_factor == 1) ? dp_sun : dp_moon;
+    float dp_directional_light = max(0.0, dot(norm.xyz, light_dir));
           dp_directional_light = clamp(dp_directional_light, 0.0, 1.0);
 
     vec3 shadow_pos = pos.xyz;
     vec3 offset = abs(light_dir.xyz) * (1.0 - dp_directional_light* 0.8);
-    shadow_pos += offset;
+    shadow_pos += offset * shadow_offset;
+
     vec4 spos = vec4(shadow_pos.xyz, 1.0);
 
     if (spos.z > -shadow_clip.w)
-- 
cgit v1.2.3


From 4aad62006259c20bcdda1495138f7313b8f35e8d Mon Sep 17 00:00:00 2001
From: Graham Linden <graham@lindenlab.com>
Date: Fri, 22 Feb 2019 14:50:03 -0800
Subject: SL-10415, SL-10612, SL-10569

Fix shadow sampling min with caster dp and offset tweaks.

Fix moon direction not being transformed as the sun dir is.

Fix colorspace issue causing some objects to render grayish instead of blackish.
---
 .../app_settings/shaders/class1/deferred/shadowUtil.glsl    | 13 ++++++++-----
 1 file changed, 8 insertions(+), 5 deletions(-)

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

diff --git a/indra/newview/app_settings/shaders/class1/deferred/shadowUtil.glsl b/indra/newview/app_settings/shaders/class1/deferred/shadowUtil.glsl
index 5cc24475e3..ad96c84de8 100644
--- a/indra/newview/app_settings/shaders/class1/deferred/shadowUtil.glsl
+++ b/indra/newview/app_settings/shaders/class1/deferred/shadowUtil.glsl
@@ -49,8 +49,8 @@ uniform int sun_up_factor;
 float pcfShadow(sampler2DShadow shadowMap, vec3 norm, vec4 stc, float bias_mul, vec2 pos_screen, vec3 light_dir)
 {
     stc.xyz /= stc.w;
-    stc.z += shadow_bias * bias_mul* 2.0;
-    stc.x = floor(stc.x*shadow_res.x + fract(stc.y*pos_screen.y*pos_screen.x))/shadow_res.x; // add some chaotic jitter to X sample pos according to Y to disguise the snapping going on here
+    stc.z += shadow_bias * bias_mul * 2.0;
+    stc.x = floor(stc.x*shadow_res.x + fract(stc.y*shadow_res.y))/shadow_res.x; // add some chaotic jitter to X sample pos according to Y to disguise the snapping going on here
     
     float cs = shadow2D(shadowMap, stc.xyz).x;
     float shadow = cs * 4.0;
@@ -90,7 +90,9 @@ float sampleDirectionalShadow(vec3 pos, vec3 norm, vec2 pos_screen)
           dp_directional_light = clamp(dp_directional_light, 0.0, 1.0);
 
     vec3 shadow_pos = pos.xyz;
-    vec3 offset = abs(light_dir.xyz) * (1.0 - dp_directional_light* 0.8);
+
+    vec3 offset = light_dir.xyz * (1.0 - dp_directional_light);
+
     shadow_pos += offset * shadow_offset;
 
     vec4 spos = vec4(shadow_pos.xyz, 1.0);
@@ -109,7 +111,7 @@ float sampleDirectionalShadow(vec3 pos, vec3 norm, vec2 pos_screen)
             
             float w = 1.0;
             w -= max(spos.z-far_split.z, 0.0)/transition_domain.z;
-            shadow += pcfShadow(shadowMap3, norm, lpos, 4.0, pos_screen, light_dir)*w;
+            shadow += pcfShadow(shadowMap3, norm, lpos, 1.0, pos_screen, light_dir)*w;
             weight += w;
             shadow += max((pos.z+shadow_clip.z)/(shadow_clip.z-shadow_clip.w)*2.0-1.0, 0.0);
         }
@@ -121,7 +123,7 @@ float sampleDirectionalShadow(vec3 pos, vec3 norm, vec2 pos_screen)
             float w = 1.0;
             w -= max(spos.z-far_split.y, 0.0)/transition_domain.y;
             w -= max(near_split.z-spos.z, 0.0)/transition_domain.z;
-            shadow += pcfShadow(shadowMap2, norm, lpos, 2.0, pos_screen, light_dir)*w;
+            shadow += pcfShadow(shadowMap2, norm, lpos, 1.0, pos_screen, light_dir)*w;
             weight += w;
         }
 
@@ -153,6 +155,7 @@ float sampleDirectionalShadow(vec3 pos, vec3 norm, vec2 pos_screen)
     {
         return 1.0f; // lit beyond the far split...
     }
+    shadow = min(dp_directional_light,shadow);
     return shadow;
 }
 
-- 
cgit v1.2.3


From f9896dc100ccd6dd2d92610cb4f71f61284f76a6 Mon Sep 17 00:00:00 2001
From: Graham Linden <graham@lindenlab.com>
Date: Tue, 26 Feb 2019 10:09:32 -0800
Subject: SL-5186, SL-10612

Fix lighting and gamma correction differences between deferred and forward rendering including materials objects.

Verify 10612 and 10500 remain fixed.

Make sure all necessary deferred shaders get the atmospheric uniform updates for doing frag-based atmospherics.
---
 indra/newview/app_settings/shaders/class1/deferred/shadowUtil.glsl | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

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

diff --git a/indra/newview/app_settings/shaders/class1/deferred/shadowUtil.glsl b/indra/newview/app_settings/shaders/class1/deferred/shadowUtil.glsl
index ad96c84de8..c927c4bf06 100644
--- a/indra/newview/app_settings/shaders/class1/deferred/shadowUtil.glsl
+++ b/indra/newview/app_settings/shaders/class1/deferred/shadowUtil.glsl
@@ -155,7 +155,7 @@ float sampleDirectionalShadow(vec3 pos, vec3 norm, vec2 pos_screen)
     {
         return 1.0f; // lit beyond the far split...
     }
-    shadow = min(dp_directional_light,shadow);
+    //shadow = min(dp_directional_light,shadow);
     return shadow;
 }
 
-- 
cgit v1.2.3


From 4f724f63049e53b9c223c7665e7e5d2344adff0e Mon Sep 17 00:00:00 2001
From: Graham Linden <graham@lindenlab.com>
Date: Tue, 12 Mar 2019 10:18:52 -0700
Subject: SL-10732

Fix accum of shadow weights and handling of clipped areas in spot shadow sampling.
---
 indra/newview/app_settings/shaders/class1/deferred/shadowUtil.glsl | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

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

diff --git a/indra/newview/app_settings/shaders/class1/deferred/shadowUtil.glsl b/indra/newview/app_settings/shaders/class1/deferred/shadowUtil.glsl
index c927c4bf06..6ff49c7dac 100644
--- a/indra/newview/app_settings/shaders/class1/deferred/shadowUtil.glsl
+++ b/indra/newview/app_settings/shaders/class1/deferred/shadowUtil.glsl
@@ -161,7 +161,7 @@ float sampleDirectionalShadow(vec3 pos, vec3 norm, vec2 pos_screen)
 
 float sampleSpotShadow(vec3 pos, vec3 norm, int index, vec2 pos_screen)
 {
-    float shadow = 1.0f;
+    float shadow = 0.0f;
     pos += norm * spot_shadow_offset;
 
     vec4 spos = vec4(pos,1.0);
@@ -194,6 +194,10 @@ float sampleSpotShadow(vec3 pos, vec3 norm, int index, vec2 pos_screen)
 
         shadow /= weight;
     }
+    else
+    {
+        shadow = 1.0f;
+    }
     return shadow;
 }
 
-- 
cgit v1.2.3


From c699ee9a7f102aa541dcc102e8fa1de2d6c55bde Mon Sep 17 00:00:00 2001
From: Graham Linden <graham@lindenlab.com>
Date: Thu, 4 Apr 2019 17:19:59 -0700
Subject: SL-10854

Clamp ambient contrib to get darker shadows.

New PCF sampling func.
---
 .../shaders/class1/deferred/shadowUtil.glsl        | 43 +++++++++++++++++++---
 1 file changed, 37 insertions(+), 6 deletions(-)

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

diff --git a/indra/newview/app_settings/shaders/class1/deferred/shadowUtil.glsl b/indra/newview/app_settings/shaders/class1/deferred/shadowUtil.glsl
index 6ff49c7dac..2d2d00cb51 100644
--- a/indra/newview/app_settings/shaders/class1/deferred/shadowUtil.glsl
+++ b/indra/newview/app_settings/shaders/class1/deferred/shadowUtil.glsl
@@ -46,21 +46,52 @@ uniform mat4 inv_proj;
 uniform vec2 screen_res;
 uniform int sun_up_factor;
 
+const float sample_count = 5;
+
+float cGoldenAngle = 2.39996323f;
+
 float pcfShadow(sampler2DShadow shadowMap, vec3 norm, vec4 stc, float bias_mul, vec2 pos_screen, vec3 light_dir)
 {
     stc.xyz /= stc.w;
+    stc.z += shadow_bias * bias_mul * 4.0;
+
+    float shadow = 0.0;
+    float cs = shadow2D(shadowMap, stc.xyz).x;
+    float initialTheta = cGoldenAngle*fract((pos_screen.y+pos_screen.x)*shadow_res.y);
+    float theta = initialTheta;
+    int i;
+    for (i = 0; i < sample_count; i++)
+    {
+        float r = float(i) / float(sample_count);
+        float weight = sqrt(1.0 - r);
+        r = sqrt(r);
+        vec2 sampleOffset;
+        sampleOffset.x = cos(theta);
+        sampleOffset.y = sin(theta);
+        sampleOffset *= r * 2.0;
+        float s = shadow2D(shadowMap, stc.xyz + vec3(sampleOffset, 0)).x;
+        shadow += weight * s;
+        theta += cGoldenAngle;
+    }
+    shadow /= float(sample_count);
+    shadow += cs;
+    shadow *= 0.5;
+    return shadow;
+}
+
+float pcfShadowOld(sampler2DShadow shadowMap, vec3 norm, vec4 stc, float bias_mul, vec2 pos_screen, vec3 light_dir)
+{
+    stc.xyz /= stc.w;
+
+    float cs = shadow2D(shadowMap, stc.xyz).x;
     stc.z += shadow_bias * bias_mul * 2.0;
     stc.x = floor(stc.x*shadow_res.x + fract(stc.y*shadow_res.y))/shadow_res.x; // add some chaotic jitter to X sample pos according to Y to disguise the snapping going on here
-    
-    float cs = shadow2D(shadowMap, stc.xyz).x;
-    float shadow = cs * 4.0;
-    
+    float shadow = cs;
     shadow += shadow2D(shadowMap, stc.xyz+vec3(2.0/shadow_res.x, 1.5/shadow_res.y, 0.0)).x;
     shadow += shadow2D(shadowMap, stc.xyz+vec3(1.0/shadow_res.x, -1.5/shadow_res.y, 0.0)).x;
     shadow += shadow2D(shadowMap, stc.xyz+vec3(-1.0/shadow_res.x, 1.5/shadow_res.y, 0.0)).x;
     shadow += shadow2D(shadowMap, stc.xyz+vec3(-2.0/shadow_res.x, -1.5/shadow_res.y, 0.0)).x;
-                       
-    return shadow * 0.125;
+    return shadow * 0.2;
 }
 
 float pcfSpotShadow(sampler2DShadow shadowMap, vec4 stc, float bias_scale, vec2 pos_screen)
-- 
cgit v1.2.3


From 09bb0336f15027e907fbd28130b4ffda28a830cd Mon Sep 17 00:00:00 2001
From: Graham Linden <graham@lindenlab.com>
Date: Fri, 5 Apr 2019 09:19:46 -0700
Subject: SL-10854 part 2

Clamp ambient to keep shadows dark.

Apply min with shadow value after we've pow'd by light gamma consistently between forward and deferred.
---
 .../shaders/class1/deferred/shadowUtil.glsl        | 40 ++--------------------
 1 file changed, 3 insertions(+), 37 deletions(-)

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

diff --git a/indra/newview/app_settings/shaders/class1/deferred/shadowUtil.glsl b/indra/newview/app_settings/shaders/class1/deferred/shadowUtil.glsl
index 2d2d00cb51..642aff6c41 100644
--- a/indra/newview/app_settings/shaders/class1/deferred/shadowUtil.glsl
+++ b/indra/newview/app_settings/shaders/class1/deferred/shadowUtil.glsl
@@ -46,52 +46,18 @@ uniform mat4 inv_proj;
 uniform vec2 screen_res;
 uniform int sun_up_factor;
 
-const float sample_count = 5;
-
-float cGoldenAngle = 2.39996323f;
-
 float pcfShadow(sampler2DShadow shadowMap, vec3 norm, vec4 stc, float bias_mul, vec2 pos_screen, vec3 light_dir)
 {
     stc.xyz /= stc.w;
-    stc.z += shadow_bias * bias_mul * 4.0;
-
-    float shadow = 0.0;
-    float cs = shadow2D(shadowMap, stc.xyz).x;
-    float initialTheta = cGoldenAngle*fract((pos_screen.y+pos_screen.x)*shadow_res.y);
-    float theta = initialTheta;
-    int i;
-    for (i = 0; i < sample_count; i++)
-    {
-        float r = float(i) / float(sample_count);
-        float weight = sqrt(1.0 - r);
-        r = sqrt(r);
-        vec2 sampleOffset;
-        sampleOffset.x = cos(theta);
-        sampleOffset.y = sin(theta);
-        sampleOffset *= r * 2.0;
-        float s = shadow2D(shadowMap, stc.xyz + vec3(sampleOffset, 0)).x;
-        shadow += weight * s;
-        theta += cGoldenAngle;
-    }
-    shadow /= float(sample_count);
-    shadow += cs;
-    shadow *= 0.5;
-    return shadow;
-}
-
-float pcfShadowOld(sampler2DShadow shadowMap, vec3 norm, vec4 stc, float bias_mul, vec2 pos_screen, vec3 light_dir)
-{
-    stc.xyz /= stc.w;
-
-    float cs = shadow2D(shadowMap, stc.xyz).x;
     stc.z += shadow_bias * bias_mul * 2.0;
     stc.x = floor(stc.x*shadow_res.x + fract(stc.y*shadow_res.y))/shadow_res.x; // add some chaotic jitter to X sample pos according to Y to disguise the snapping going on here
-    float shadow = cs;
+    float cs = shadow2D(shadowMap, stc.xyz).x;
+    float shadow = cs * 4.0;
     shadow += shadow2D(shadowMap, stc.xyz+vec3(2.0/shadow_res.x, 1.5/shadow_res.y, 0.0)).x;
     shadow += shadow2D(shadowMap, stc.xyz+vec3(1.0/shadow_res.x, -1.5/shadow_res.y, 0.0)).x;
     shadow += shadow2D(shadowMap, stc.xyz+vec3(-1.0/shadow_res.x, 1.5/shadow_res.y, 0.0)).x;
     shadow += shadow2D(shadowMap, stc.xyz+vec3(-2.0/shadow_res.x, -1.5/shadow_res.y, 0.0)).x;
-    return shadow * 0.2;
+    return shadow * 0.125;
 }
 
 float pcfSpotShadow(sampler2DShadow shadowMap, vec4 stc, float bias_scale, vec2 pos_screen)
-- 
cgit v1.2.3


From 27184c74b4b8085e362c6e21d5d1071889476fe9 Mon Sep 17 00:00:00 2001
From: Graham Linden <graham@lindenlab.com>
Date: Wed, 10 Apr 2019 13:43:58 -0700
Subject: SL-10901

Fix up shadow sampling and tweak shadow biasing.

Clean up shader decls of unused funcs.

Clean up whitespace diffs from release.
---
 indra/newview/app_settings/shaders/class1/deferred/shadowUtil.glsl | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

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

diff --git a/indra/newview/app_settings/shaders/class1/deferred/shadowUtil.glsl b/indra/newview/app_settings/shaders/class1/deferred/shadowUtil.glsl
index 642aff6c41..0a714f0013 100644
--- a/indra/newview/app_settings/shaders/class1/deferred/shadowUtil.glsl
+++ b/indra/newview/app_settings/shaders/class1/deferred/shadowUtil.glsl
@@ -49,7 +49,7 @@ uniform int sun_up_factor;
 float pcfShadow(sampler2DShadow shadowMap, vec3 norm, vec4 stc, float bias_mul, vec2 pos_screen, vec3 light_dir)
 {
     stc.xyz /= stc.w;
-    stc.z += shadow_bias * bias_mul * 2.0;
+    stc.z += shadow_bias * bias_mul * 16.0;
     stc.x = floor(stc.x*shadow_res.x + fract(stc.y*shadow_res.y))/shadow_res.x; // add some chaotic jitter to X sample pos according to Y to disguise the snapping going on here
     float cs = shadow2D(shadowMap, stc.xyz).x;
     float shadow = cs * 4.0;
@@ -57,7 +57,7 @@ float pcfShadow(sampler2DShadow shadowMap, vec3 norm, vec4 stc, float bias_mul,
     shadow += shadow2D(shadowMap, stc.xyz+vec3(1.0/shadow_res.x, -1.5/shadow_res.y, 0.0)).x;
     shadow += shadow2D(shadowMap, stc.xyz+vec3(-1.0/shadow_res.x, 1.5/shadow_res.y, 0.0)).x;
     shadow += shadow2D(shadowMap, stc.xyz+vec3(-2.0/shadow_res.x, -1.5/shadow_res.y, 0.0)).x;
-    return shadow * 0.125;
+    return clamp(shadow * 0.125, 0.0, 1.0);
 }
 
 float pcfSpotShadow(sampler2DShadow shadowMap, vec4 stc, float bias_scale, vec2 pos_screen)
-- 
cgit v1.2.3


From ea9c8e4325b1f3629b57c36208c7669e1f028c10 Mon Sep 17 00:00:00 2001
From: Graham Linden <graham@lindenlab.com>
Date: Fri, 19 Apr 2019 08:01:28 -0700
Subject: SL-10996, SL-10997, SL-10970

Revert fix for 10901 because knock-on is causing other issues.
---
 indra/newview/app_settings/shaders/class1/deferred/shadowUtil.glsl | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

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

diff --git a/indra/newview/app_settings/shaders/class1/deferred/shadowUtil.glsl b/indra/newview/app_settings/shaders/class1/deferred/shadowUtil.glsl
index 0a714f0013..84032f7ff7 100644
--- a/indra/newview/app_settings/shaders/class1/deferred/shadowUtil.glsl
+++ b/indra/newview/app_settings/shaders/class1/deferred/shadowUtil.glsl
@@ -49,7 +49,7 @@ uniform int sun_up_factor;
 float pcfShadow(sampler2DShadow shadowMap, vec3 norm, vec4 stc, float bias_mul, vec2 pos_screen, vec3 light_dir)
 {
     stc.xyz /= stc.w;
-    stc.z += shadow_bias * bias_mul * 16.0;
+    stc.z += shadow_bias * bias_mul * 2.0;
     stc.x = floor(stc.x*shadow_res.x + fract(stc.y*shadow_res.y))/shadow_res.x; // add some chaotic jitter to X sample pos according to Y to disguise the snapping going on here
     float cs = shadow2D(shadowMap, stc.xyz).x;
     float shadow = cs * 4.0;
@@ -78,6 +78,7 @@ float pcfSpotShadow(sampler2DShadow shadowMap, vec4 stc, float bias_scale, vec2
     shadow += shadow2D(shadowMap, stc.xyz+vec3(-off.x*2.0, -off.y, 0.0)).x;
     return shadow*0.2;
 }
+
 float sampleDirectionalShadow(vec3 pos, vec3 norm, vec2 pos_screen)
 {
     float shadow = 0.0f;
-- 
cgit v1.2.3


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).
---
 .../shaders/class1/deferred/shadowUtil.glsl           | 19 ++++++++++++-------
 1 file changed, 12 insertions(+), 7 deletions(-)

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

diff --git a/indra/newview/app_settings/shaders/class1/deferred/shadowUtil.glsl b/indra/newview/app_settings/shaders/class1/deferred/shadowUtil.glsl
index 84032f7ff7..c2cb0eb8c3 100644
--- a/indra/newview/app_settings/shaders/class1/deferred/shadowUtil.glsl
+++ b/indra/newview/app_settings/shaders/class1/deferred/shadowUtil.glsl
@@ -48,15 +48,17 @@ uniform int sun_up_factor;
 
 float pcfShadow(sampler2DShadow shadowMap, vec3 norm, vec4 stc, float bias_mul, vec2 pos_screen, vec3 light_dir)
 {
+    float offset = shadow_bias * bias_mul;
     stc.xyz /= stc.w;
-    stc.z += shadow_bias * bias_mul * 2.0;
+    stc.z += offset * 4.0;
     stc.x = floor(stc.x*shadow_res.x + fract(stc.y*shadow_res.y))/shadow_res.x; // add some chaotic jitter to X sample pos according to Y to disguise the snapping going on here
     float cs = shadow2D(shadowMap, stc.xyz).x;
     float shadow = cs * 4.0;
-    shadow += shadow2D(shadowMap, stc.xyz+vec3(2.0/shadow_res.x, 1.5/shadow_res.y, 0.0)).x;
-    shadow += shadow2D(shadowMap, stc.xyz+vec3(1.0/shadow_res.x, -1.5/shadow_res.y, 0.0)).x;
-    shadow += shadow2D(shadowMap, stc.xyz+vec3(-1.0/shadow_res.x, 1.5/shadow_res.y, 0.0)).x;
-    shadow += shadow2D(shadowMap, stc.xyz+vec3(-2.0/shadow_res.x, -1.5/shadow_res.y, 0.0)).x;
+    stc.z += offset * 2.0;
+    shadow += shadow2D(shadowMap, stc.xyz+vec3( 1.5/shadow_res.x,  0.5/shadow_res.y, 0.0)).x;
+    shadow += shadow2D(shadowMap, stc.xyz+vec3( 0.5/shadow_res.x, -1.5/shadow_res.y, 0.0)).x;
+    shadow += shadow2D(shadowMap, stc.xyz+vec3(-1.5/shadow_res.x, -0.5/shadow_res.y, 0.0)).x;
+    shadow += shadow2D(shadowMap, stc.xyz+vec3(-0.5/shadow_res.x,  1.5/shadow_res.y, 0.0)).x;
     return clamp(shadow * 0.125, 0.0, 1.0);
 }
 
@@ -91,7 +93,7 @@ float sampleDirectionalShadow(vec3 pos, vec3 norm, vec2 pos_screen)
 
     vec3 offset = light_dir.xyz * (1.0 - dp_directional_light);
 
-    shadow_pos += offset * shadow_offset;
+    shadow_pos += offset * shadow_offset * 2.0;
 
     vec4 spos = vec4(shadow_pos.xyz, 1.0);
 
@@ -109,6 +111,7 @@ float sampleDirectionalShadow(vec3 pos, vec3 norm, vec2 pos_screen)
             
             float w = 1.0;
             w -= max(spos.z-far_split.z, 0.0)/transition_domain.z;
+            w = clamp(w, 0.0, 1.0);
             shadow += pcfShadow(shadowMap3, norm, lpos, 1.0, pos_screen, light_dir)*w;
             weight += w;
             shadow += max((pos.z+shadow_clip.z)/(shadow_clip.z-shadow_clip.w)*2.0-1.0, 0.0);
@@ -121,6 +124,7 @@ float sampleDirectionalShadow(vec3 pos, vec3 norm, vec2 pos_screen)
             float w = 1.0;
             w -= max(spos.z-far_split.y, 0.0)/transition_domain.y;
             w -= max(near_split.z-spos.z, 0.0)/transition_domain.z;
+            w = clamp(w, 0.25, 1.0);
             shadow += pcfShadow(shadowMap2, norm, lpos, 1.0, pos_screen, light_dir)*w;
             weight += w;
         }
@@ -132,6 +136,7 @@ float sampleDirectionalShadow(vec3 pos, vec3 norm, vec2 pos_screen)
             float w = 1.0;
             w -= max(spos.z-far_split.x, 0.0)/transition_domain.x;
             w -= max(near_split.y-spos.z, 0.0)/transition_domain.y;
+            w = clamp(w, 0.5, 1.0);
             shadow += pcfShadow(shadowMap1, norm, lpos, 1.0, pos_screen, light_dir)*w;
             weight += w;
         }
@@ -142,7 +147,7 @@ float sampleDirectionalShadow(vec3 pos, vec3 norm, vec2 pos_screen)
                             
             float w = 1.0;
             w -= max(near_split.x-spos.z, 0.0)/transition_domain.x;
-                
+            w = clamp(w, 0.75, 1.0);
             shadow += pcfShadow(shadowMap0, norm, lpos, 1.0, pos_screen, light_dir)*w;
             weight += w;
         }
-- 
cgit v1.2.3


From 89c24095c6c1b778b93a4eb7ad398627f4d5479f Mon Sep 17 00:00:00 2001
From: Graham Linden <graham@lindenlab.com>
Date: Fri, 3 May 2019 12:02:59 -0700
Subject: SL-11085

Remove ambient term clamping to get less dark shadows where we want less dark shadows in ALM.
---
 .../newview/app_settings/shaders/class1/deferred/shadowUtil.glsl  | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

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

diff --git a/indra/newview/app_settings/shaders/class1/deferred/shadowUtil.glsl b/indra/newview/app_settings/shaders/class1/deferred/shadowUtil.glsl
index c2cb0eb8c3..14cd805d10 100644
--- a/indra/newview/app_settings/shaders/class1/deferred/shadowUtil.glsl
+++ b/indra/newview/app_settings/shaders/class1/deferred/shadowUtil.glsl
@@ -50,7 +50,7 @@ float pcfShadow(sampler2DShadow shadowMap, vec3 norm, vec4 stc, float bias_mul,
 {
     float offset = shadow_bias * bias_mul;
     stc.xyz /= stc.w;
-    stc.z += offset * 4.0;
+    stc.z += offset * 2.0;
     stc.x = floor(stc.x*shadow_res.x + fract(stc.y*shadow_res.y))/shadow_res.x; // add some chaotic jitter to X sample pos according to Y to disguise the snapping going on here
     float cs = shadow2D(shadowMap, stc.xyz).x;
     float shadow = cs * 4.0;
@@ -124,7 +124,7 @@ float sampleDirectionalShadow(vec3 pos, vec3 norm, vec2 pos_screen)
             float w = 1.0;
             w -= max(spos.z-far_split.y, 0.0)/transition_domain.y;
             w -= max(near_split.z-spos.z, 0.0)/transition_domain.z;
-            w = clamp(w, 0.25, 1.0);
+            w = clamp(w, 0.0, 1.0);
             shadow += pcfShadow(shadowMap2, norm, lpos, 1.0, pos_screen, light_dir)*w;
             weight += w;
         }
@@ -136,7 +136,7 @@ float sampleDirectionalShadow(vec3 pos, vec3 norm, vec2 pos_screen)
             float w = 1.0;
             w -= max(spos.z-far_split.x, 0.0)/transition_domain.x;
             w -= max(near_split.y-spos.z, 0.0)/transition_domain.y;
-            w = clamp(w, 0.5, 1.0);
+            w = clamp(w, 0.0, 1.0);
             shadow += pcfShadow(shadowMap1, norm, lpos, 1.0, pos_screen, light_dir)*w;
             weight += w;
         }
@@ -147,7 +147,7 @@ float sampleDirectionalShadow(vec3 pos, vec3 norm, vec2 pos_screen)
                             
             float w = 1.0;
             w -= max(near_split.x-spos.z, 0.0)/transition_domain.x;
-            w = clamp(w, 0.75, 1.0);
+            w = clamp(w, 0.0, 1.0);
             shadow += pcfShadow(shadowMap0, norm, lpos, 1.0, pos_screen, light_dir)*w;
             weight += w;
         }
-- 
cgit v1.2.3


From a4b279444e76432ca60553aaef861d9cb1773c06 Mon Sep 17 00:00:00 2001
From: Graham Linden <graham@lindenlab.com>
Date: Sat, 4 May 2019 10:56:16 -0700
Subject: SL-11080

---
 .../shaders/class1/deferred/shadowUtil.glsl        | 37 +++++++++++++++-------
 1 file changed, 26 insertions(+), 11 deletions(-)

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

diff --git a/indra/newview/app_settings/shaders/class1/deferred/shadowUtil.glsl b/indra/newview/app_settings/shaders/class1/deferred/shadowUtil.glsl
index 14cd805d10..5694ba1f7b 100644
--- a/indra/newview/app_settings/shaders/class1/deferred/shadowUtil.glsl
+++ b/indra/newview/app_settings/shaders/class1/deferred/shadowUtil.glsl
@@ -50,11 +50,10 @@ float pcfShadow(sampler2DShadow shadowMap, vec3 norm, vec4 stc, float bias_mul,
 {
     float offset = shadow_bias * bias_mul;
     stc.xyz /= stc.w;
-    stc.z += offset * 2.0;
-    stc.x = floor(stc.x*shadow_res.x + fract(stc.y*shadow_res.y))/shadow_res.x; // add some chaotic jitter to X sample pos according to Y to disguise the snapping going on here
+    stc.z += offset * 3.0;
+    stc.x = floor(stc.x*shadow_res.x + fract(pos_screen.y*shadow_res.y))/shadow_res.x; // add some chaotic jitter to X sample pos according to Y to disguise the snapping going on here
     float cs = shadow2D(shadowMap, stc.xyz).x;
     float shadow = cs * 4.0;
-    stc.z += offset * 2.0;
     shadow += shadow2D(shadowMap, stc.xyz+vec3( 1.5/shadow_res.x,  0.5/shadow_res.y, 0.0)).x;
     shadow += shadow2D(shadowMap, stc.xyz+vec3( 0.5/shadow_res.x, -1.5/shadow_res.y, 0.0)).x;
     shadow += shadow2D(shadowMap, stc.xyz+vec3(-1.5/shadow_res.x, -0.5/shadow_res.y, 0.0)).x;
@@ -112,8 +111,12 @@ float sampleDirectionalShadow(vec3 pos, vec3 norm, vec2 pos_screen)
             float w = 1.0;
             w -= max(spos.z-far_split.z, 0.0)/transition_domain.z;
             w = clamp(w, 0.0, 1.0);
-            shadow += pcfShadow(shadowMap3, norm, lpos, 1.0, pos_screen, light_dir)*w;
-            weight += w;
+            float contrib = pcfShadow(shadowMap3, norm, lpos, 1.0, pos_screen, light_dir)*w;
+            if (contrib > 0)
+            {
+                shadow += contrib;
+                weight += w;
+            }
             shadow += max((pos.z+shadow_clip.z)/(shadow_clip.z-shadow_clip.w)*2.0-1.0, 0.0);
         }
 
@@ -125,8 +128,12 @@ float sampleDirectionalShadow(vec3 pos, vec3 norm, vec2 pos_screen)
             w -= max(spos.z-far_split.y, 0.0)/transition_domain.y;
             w -= max(near_split.z-spos.z, 0.0)/transition_domain.z;
             w = clamp(w, 0.0, 1.0);
-            shadow += pcfShadow(shadowMap2, norm, lpos, 1.0, pos_screen, light_dir)*w;
-            weight += w;
+            float contrib = pcfShadow(shadowMap2, norm, lpos, 1.0, pos_screen, light_dir)*w;
+            if (contrib > 0)
+            {
+                shadow += contrib;
+                weight += w;
+            }
         }
 
         if (spos.z < near_split.x && spos.z > far_split.y)
@@ -137,8 +144,12 @@ float sampleDirectionalShadow(vec3 pos, vec3 norm, vec2 pos_screen)
             w -= max(spos.z-far_split.x, 0.0)/transition_domain.x;
             w -= max(near_split.y-spos.z, 0.0)/transition_domain.y;
             w = clamp(w, 0.0, 1.0);
-            shadow += pcfShadow(shadowMap1, norm, lpos, 1.0, pos_screen, light_dir)*w;
-            weight += w;
+            float contrib = pcfShadow(shadowMap1, norm, lpos, 1.0, pos_screen, light_dir)*w;
+            if (contrib > 0)
+            {
+                shadow += contrib;
+                weight += w;
+            }
         }
 
         if (spos.z > far_split.x)
@@ -148,8 +159,12 @@ float sampleDirectionalShadow(vec3 pos, vec3 norm, vec2 pos_screen)
             float w = 1.0;
             w -= max(near_split.x-spos.z, 0.0)/transition_domain.x;
             w = clamp(w, 0.0, 1.0);
-            shadow += pcfShadow(shadowMap0, norm, lpos, 1.0, pos_screen, light_dir)*w;
-            weight += w;
+            float contrib = pcfShadow(shadowMap0, norm, lpos, 1.0, pos_screen, light_dir)*w;
+            if (contrib > 0)
+            {
+                shadow += contrib;
+                weight += w;
+            }
         }
 
         shadow /= weight;
-- 
cgit v1.2.3


From 06097302f4ad8786913e77514d5d60678da3160d Mon Sep 17 00:00:00 2001
From: Graham Linden <graham@lindenlab.com>
Date: Tue, 7 May 2019 16:42:38 -0700
Subject: SL-11108

Remove tweaks to combine cascade results.
---
 .../app_settings/shaders/class1/deferred/shadowUtil.glsl | 16 ++++++++--------
 1 file changed, 8 insertions(+), 8 deletions(-)

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

diff --git a/indra/newview/app_settings/shaders/class1/deferred/shadowUtil.glsl b/indra/newview/app_settings/shaders/class1/deferred/shadowUtil.glsl
index 5694ba1f7b..bea016300d 100644
--- a/indra/newview/app_settings/shaders/class1/deferred/shadowUtil.glsl
+++ b/indra/newview/app_settings/shaders/class1/deferred/shadowUtil.glsl
@@ -110,9 +110,9 @@ float sampleDirectionalShadow(vec3 pos, vec3 norm, vec2 pos_screen)
             
             float w = 1.0;
             w -= max(spos.z-far_split.z, 0.0)/transition_domain.z;
-            w = clamp(w, 0.0, 1.0);
+            //w = clamp(w, 0.0, 1.0);
             float contrib = pcfShadow(shadowMap3, norm, lpos, 1.0, pos_screen, light_dir)*w;
-            if (contrib > 0)
+            //if (contrib > 0)
             {
                 shadow += contrib;
                 weight += w;
@@ -127,9 +127,9 @@ float sampleDirectionalShadow(vec3 pos, vec3 norm, vec2 pos_screen)
             float w = 1.0;
             w -= max(spos.z-far_split.y, 0.0)/transition_domain.y;
             w -= max(near_split.z-spos.z, 0.0)/transition_domain.z;
-            w = clamp(w, 0.0, 1.0);
+            //w = clamp(w, 0.0, 1.0);
             float contrib = pcfShadow(shadowMap2, norm, lpos, 1.0, pos_screen, light_dir)*w;
-            if (contrib > 0)
+            //if (contrib > 0)
             {
                 shadow += contrib;
                 weight += w;
@@ -143,9 +143,9 @@ float sampleDirectionalShadow(vec3 pos, vec3 norm, vec2 pos_screen)
             float w = 1.0;
             w -= max(spos.z-far_split.x, 0.0)/transition_domain.x;
             w -= max(near_split.y-spos.z, 0.0)/transition_domain.y;
-            w = clamp(w, 0.0, 1.0);
+            //w = clamp(w, 0.0, 1.0);
             float contrib = pcfShadow(shadowMap1, norm, lpos, 1.0, pos_screen, light_dir)*w;
-            if (contrib > 0)
+            //if (contrib > 0)
             {
                 shadow += contrib;
                 weight += w;
@@ -158,9 +158,9 @@ float sampleDirectionalShadow(vec3 pos, vec3 norm, vec2 pos_screen)
                             
             float w = 1.0;
             w -= max(near_split.x-spos.z, 0.0)/transition_domain.x;
-            w = clamp(w, 0.0, 1.0);
+            //w = clamp(w, 0.0, 1.0);
             float contrib = pcfShadow(shadowMap0, norm, lpos, 1.0, pos_screen, light_dir)*w;
-            if (contrib > 0)
+            //if (contrib > 0)
             {
                 shadow += contrib;
                 weight += w;
-- 
cgit v1.2.3


From 27c96405a489327302ebeb7d192788447932d7f1 Mon Sep 17 00:00:00 2001
From: Graham Linden <graham@lindenlab.com>
Date: Mon, 13 May 2019 09:49:53 -0700
Subject: SL-10996

Restore old sun matrix gen code.

Make sky use correct colorspace.

Make sunlight color the CPU-generated WL color when not using atmo shaders or deferred (helps 11107).
---
 indra/newview/app_settings/shaders/class1/deferred/shadowUtil.glsl | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

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

diff --git a/indra/newview/app_settings/shaders/class1/deferred/shadowUtil.glsl b/indra/newview/app_settings/shaders/class1/deferred/shadowUtil.glsl
index bea016300d..4134220306 100644
--- a/indra/newview/app_settings/shaders/class1/deferred/shadowUtil.glsl
+++ b/indra/newview/app_settings/shaders/class1/deferred/shadowUtil.glsl
@@ -50,7 +50,7 @@ float pcfShadow(sampler2DShadow shadowMap, vec3 norm, vec4 stc, float bias_mul,
 {
     float offset = shadow_bias * bias_mul;
     stc.xyz /= stc.w;
-    stc.z += offset * 3.0;
+    stc.z += offset * 2.0;
     stc.x = floor(stc.x*shadow_res.x + fract(pos_screen.y*shadow_res.y))/shadow_res.x; // add some chaotic jitter to X sample pos according to Y to disguise the snapping going on here
     float cs = shadow2D(shadowMap, stc.xyz).x;
     float shadow = cs * 4.0;
-- 
cgit v1.2.3