Merge main (DRTVWR-596 GLTF Materials Maint) into DRTVWR-591-maint-X

# Conflicts:
#	indra/newview/VIEWER_VERSION.txt

78 files changed, 1206 insertions, 1312 deletions

diff --git a/indra/llprimitive/lldaeloader.cpp b/indra/llprimitive/lldaeloader.cpp
index 46e1cb4922..2e4b013b77 100644
--- a/indra/llprimitive/lldaeloader.cpp
+++ b/indra/llprimitive/lldaeloader.cpp
@@ -2584,7 +2584,8 @@ bool LLDAELoader::loadModelsFromDomMesh(domMesh* mesh, std::vector<LLModel*>& mo
 			next->mLabel = model_name + (char)((int)'a' + next->mSubmodelID) + lod_suffix[mLod];
 			next->getVolumeFaces() = remainder;
 			next->mNormalizedScale = ret->mNormalizedScale;
-			
+			next->mNormalizedTranslation = ret->mNormalizedTranslation;
+
 			if ( ret->mMaterialList.size() > LL_SCULPT_MESH_MAX_FACES)
 			{
 				next->mMaterialList.assign(ret->mMaterialList.begin() + LL_SCULPT_MESH_MAX_FACES, ret->mMaterialList.end());
diff --git a/indra/llprimitive/llgltfmaterial.cpp b/indra/llprimitive/llgltfmaterial.cpp
index ae165f7fa4..237636bd0b 100644
--- a/indra/llprimitive/llgltfmaterial.cpp
+++ b/indra/llprimitive/llgltfmaterial.cpp
@@ -699,24 +699,44 @@ void LLGLTFMaterial::applyOverrideLLSD(const LLSD& data)
     if (bc.isDefined())
     {
         mBaseColor.setValue(bc);
+        if (mBaseColor == getDefaultBaseColor())
+        {
+            // HACK -- nudge by epsilon if we receive a default value (indicates override to default)
+            mBaseColor.mV[3] -= FLT_EPSILON;
+        }
     }
 
     const LLSD& ec = data["ec"];
     if (ec.isDefined())
     {
         mEmissiveColor.setValue(ec);
+        if (mEmissiveColor == getDefaultEmissiveColor())
+        {
+            // HACK -- nudge by epsilon if we receive a default value (indicates override to default)
+            mEmissiveColor.mV[0] += FLT_EPSILON;
+        }
     }
 
     const LLSD& mf = data["mf"];
     if (mf.isReal())
     {
         mMetallicFactor = mf.asReal();
+        if (mMetallicFactor == getDefaultMetallicFactor())
+        { 
+            // HACK -- nudge by epsilon if we receive a default value (indicates override to default)
+            mMetallicFactor -= FLT_EPSILON;
+        }
     }
 
     const LLSD& rf = data["rf"];
     if (rf.isReal())
     {
         mRoughnessFactor = rf.asReal();
+        if (mRoughnessFactor == getDefaultRoughnessFactor())
+        { 
+            // HACK -- nudge by epsilon if we receive a default value (indicates override to default)
+            mRoughnessFactor -= FLT_EPSILON;
+        }
     }
 
     const LLSD& am = data["am"];
@@ -730,6 +750,11 @@ void LLGLTFMaterial::applyOverrideLLSD(const LLSD& data)
     if (ac.isReal())
     {
         mAlphaCutoff = ac.asReal();
+        if (mAlphaCutoff == getDefaultAlphaCutoff())
+        {
+            // HACK -- nudge by epsilon if we receive a default value (indicates override to default)
+            mAlphaCutoff -= FLT_EPSILON;
+        }
     }
 
     const LLSD& ds = data["ds"];
diff --git a/indra/llprimitive/llmodel.cpp b/indra/llprimitive/llmodel.cpp
index ee493968de..99a5697a84 100644
--- a/indra/llprimitive/llmodel.cpp
+++ b/indra/llprimitive/llmodel.cpp
@@ -52,7 +52,8 @@ const int MODEL_NAMES_LENGTH = sizeof(model_names) / sizeof(std::string);
 
 LLModel::LLModel(LLVolumeParams& params, F32 detail)
 	: LLVolume(params, detail), 
-      mNormalizedScale(1,1,1), 
+      mNormalizedScale(1,1,1),
+      mNormalizedTranslation(0, 0, 0),
       mPelvisOffset( 0.0f ), 
       mStatus(NO_ERRORS), 
       mSubmodelID(0)
diff --git a/indra/llrender/llglslshader.h b/indra/llrender/llglslshader.h
index b8071248e2..43d095f73a 100644
--- a/indra/llrender/llglslshader.h
+++ b/indra/llrender/llglslshader.h
@@ -41,7 +41,6 @@ public:
     bool hasLighting = false; // implies no transport (it's possible to have neither though)
     bool isAlphaLighting = false; // indicates lighting shaders need not be linked in (lighting performed directly in alpha shader to match deferred lighting functions)
     bool isSpecular = false;
-    bool hasWaterFog = false; // implies no gamma
     bool hasTransport = false; // implies no lighting (it's possible to have neither though)
     bool hasSkinning = false;
     bool hasObjectSkinning = false;
diff --git a/indra/llrender/llshadermgr.cpp b/indra/llrender/llshadermgr.cpp
index 0e7f9e1331..f78be910d2 100644
--- a/indra/llrender/llshadermgr.cpp
+++ b/indra/llrender/llshadermgr.cpp
@@ -81,14 +81,7 @@ BOOL LLShaderMgr::attachShaderFeatures(LLGLSLShader * shader)
 	// NOTE order of shader object attaching is VERY IMPORTANT!!!
 	if (features->calculatesAtmospherics)
 	{
-		if (features->hasWaterFog)
-		{
-			if (!shader->attachVertexObject("windlight/atmosphericsVarsWaterV.glsl"))
-			{
-				return FALSE;
-			}
-		}
-        else if (!shader->attachVertexObject("windlight/atmosphericsVarsV.glsl"))
+		if (!shader->attachVertexObject("windlight/atmosphericsVarsV.glsl"))
 		{
 			return FALSE;
 		}
@@ -201,14 +194,7 @@ BOOL LLShaderMgr::attachShaderFeatures(LLGLSLShader * shader)
 
 	if(features->calculatesAtmospherics || features->hasGamma || features->isDeferred)
 	{
-		if (features->hasWaterFog)
-		{
-			if (!shader->attachFragmentObject("windlight/atmosphericsVarsWaterF.glsl"))
-			{
-				return FALSE;
-			}
-		}
-        else if (!shader->attachFragmentObject("windlight/atmosphericsVarsF.glsl"))
+		if (!shader->attachFragmentObject("windlight/atmosphericsVarsF.glsl"))
 		{
 			return FALSE;
 		}
@@ -292,7 +278,7 @@ BOOL LLShaderMgr::attachShaderFeatures(LLGLSLShader * shader)
 	}
 	
 	// NOTE order of shader object attaching is VERY IMPORTANT!!!
-	if (features->hasWaterFog)
+	if (features->hasAtmospherics)
 	{
         if (!shader->attachFragmentObject("environment/waterFogF.glsl"))
 		{
@@ -302,82 +288,40 @@ BOOL LLShaderMgr::attachShaderFeatures(LLGLSLShader * shader)
 	
 	if (features->hasLighting)
 	{
-		if (features->hasWaterFog)
+		if (features->disableTextureIndex)
 		{
-			if (features->disableTextureIndex)
+			if (features->hasAlphaMask)
 			{
-				if (features->hasAlphaMask)
-				{
-                    if (!shader->attachFragmentObject("lighting/lightWaterAlphaMaskNonIndexedF.glsl"))
-					{
-						return FALSE;
-					}
-				}
-				else
+                if (!shader->attachFragmentObject("lighting/lightAlphaMaskNonIndexedF.glsl"))
 				{
-                    if (!shader->attachFragmentObject("lighting/lightWaterNonIndexedF.glsl"))
-					{
-						return FALSE;
-					}
+					return FALSE;
 				}
 			}
-			else 
+			else
 			{
-				if (features->hasAlphaMask)
-				{
-                    if (!shader->attachFragmentObject("lighting/lightWaterAlphaMaskF.glsl"))
-					{
-						return FALSE;
-					}
-				}
-				else
+                if (!shader->attachFragmentObject("lighting/lightNonIndexedF.glsl"))
 				{
-                    if (!shader->attachFragmentObject("lighting/lightWaterF.glsl"))
-					{
-						return FALSE;
-					}
+					return FALSE;
 				}
-				shader->mFeatures.mIndexedTextureChannels = llmax(LLGLSLShader::sIndexedTextureChannels-1, 1);
 			}
 		}
-		
-		else
+		else 
 		{
-			if (features->disableTextureIndex)
+			if (features->hasAlphaMask)
 			{
-				if (features->hasAlphaMask)
+                if (!shader->attachFragmentObject("lighting/lightAlphaMaskF.glsl"))
 				{
-                    if (!shader->attachFragmentObject("lighting/lightAlphaMaskNonIndexedF.glsl"))
-					{
-						return FALSE;
-					}
-				}
-				else
-				{
-                    if (!shader->attachFragmentObject("lighting/lightNonIndexedF.glsl"))
-					{
-						return FALSE;
-					}
+					return FALSE;
 				}
 			}
-			else 
+			else
 			{
-				if (features->hasAlphaMask)
-				{
-                    if (!shader->attachFragmentObject("lighting/lightAlphaMaskF.glsl"))
-					{
-						return FALSE;
-					}
-				}
-				else
+                if (!shader->attachFragmentObject("lighting/lightF.glsl"))
 				{
-                    if (!shader->attachFragmentObject("lighting/lightF.glsl"))
-					{
-						return FALSE;
-					}
+					return FALSE;
 				}
-				shader->mFeatures.mIndexedTextureChannels = llmax(LLGLSLShader::sIndexedTextureChannels-1, 1);
 			}
+			shader->mFeatures.mIndexedTextureChannels = llmax(LLGLSLShader::sIndexedTextureChannels-1, 1);
 		}
 	}
 	
diff --git a/indra/llwindow/llwindowwin32.cpp b/indra/llwindow/llwindowwin32.cpp
index d66d4658dc..99a11f772b 100644
--- a/indra/llwindow/llwindowwin32.cpp
+++ b/indra/llwindow/llwindowwin32.cpp
@@ -1929,7 +1929,7 @@ void LLWindowWin32::toggleVSync(bool enable_vsync)
         LL_INFOS("Window") << "Disabling vertical sync" << LL_ENDL;
         wglSwapIntervalEXT(0);
     }
-    else
+    else if (wglSwapIntervalEXT)
     {
         LL_INFOS("Window") << "Enabling vertical sync" << LL_ENDL;
         wglSwapIntervalEXT(1);
diff --git a/indra/newview/VIEWER_VERSION.txt b/indra/newview/VIEWER_VERSION.txt
index a8a1887568..1996c50447 100644
--- a/indra/newview/VIEWER_VERSION.txt
+++ b/indra/newview/VIEWER_VERSION.txt
@@ -1 +1 @@
-7.1.2
+7.1.3
diff --git a/indra/newview/app_settings/settings.xml b/indra/newview/app_settings/settings.xml
index b02a3bd6fb..b9779e183d 100644
--- a/indra/newview/app_settings/settings.xml
+++ b/indra/newview/app_settings/settings.xml
@@ -445,6 +445,17 @@
       <key>Value</key>
       <integer>0</integer>
     </map>
+    <key>RenderSnapshotNoPost</key>
+    <map>
+      <key>Comment</key>
+      <string>Disable tone mapping and exposure correction when snapshot is being rendered</string>
+      <key>Persist</key>
+      <integer>1</integer>
+      <key>Type</key>
+      <string>Boolean</string>
+      <key>Value</key>
+      <integer>0</integer>
+    </map>
     <key>AutomaticFly</key>
     <map>
       <key>Comment</key>
diff --git a/indra/newview/app_settings/shaders/class1/deferred/emissiveF.glsl b/indra/newview/app_settings/shaders/class1/deferred/emissiveF.glsl
index 9e61b6b894..c95f791dbf 100644
--- a/indra/newview/app_settings/shaders/class1/deferred/emissiveF.glsl
+++ b/indra/newview/app_settings/shaders/class1/deferred/emissiveF.glsl
@@ -34,6 +34,6 @@ void main()
 {
     // NOTE: when this shader is used, only alpha is being written to
 	float a = diffuseLookup(vary_texcoord0.xy).a*vertex_color.a;
-	frag_color = vec4(0, 0, 0, a);
+	frag_color = max(vec4(0, 0, 0, a), vec4(0));
 }
 
diff --git a/indra/newview/app_settings/shaders/class1/deferred/fullbrightF.glsl b/indra/newview/app_settings/shaders/class1/deferred/fullbrightF.glsl
index 5d58cc91cd..a6fab10791 100644
--- a/indra/newview/app_settings/shaders/class1/deferred/fullbrightF.glsl
+++ b/indra/newview/app_settings/shaders/class1/deferred/fullbrightF.glsl
@@ -35,21 +35,19 @@ in vec3 vary_position;
 in vec4 vertex_color;
 in vec2 vary_texcoord0;
 
-#ifdef WATER_FOG
-vec4 applyWaterFogView(vec3 pos, vec4 color);
-#endif
-
 vec3 srgb_to_linear(vec3 cs);
 vec3 linear_to_srgb(vec3 cl);
-vec3 atmosFragLighting(vec3 light, vec3 additive, vec3 atten);
-void calcAtmosphericVars(vec3 inPositionEye, vec3 light_dir, float ambFactor, out vec3 sunlit, out vec3 amblit, out vec3 additive, out vec3 atten);
 
 #ifdef HAS_ALPHA_MASK
 uniform float minimum_alpha;
 #endif
 
 #ifdef IS_ALPHA
+uniform vec4 waterPlane;
 void waterClip(vec3 pos);
+void calcAtmosphericVars(vec3 inPositionEye, vec3 light_dir, float ambFactor, out vec3 sunlit, out vec3 amblit, out vec3 additive,
+                         out vec3 atten);
+vec4 applySkyAndWaterFog(vec3 pos, vec3 additive, vec3 atten, vec4 color);
 #endif
 
 void main() 
@@ -78,26 +76,21 @@ void main()
 
     vec3 pos = vary_position;
 
+    color.a = final_alpha;
 #ifndef IS_HUD
+    color.rgb = srgb_to_linear(color.rgb);
+#ifdef IS_ALPHA
+
     vec3 sunlit;
     vec3 amblit;
     vec3 additive;
     vec3 atten;
     calcAtmosphericVars(pos.xyz, vec3(0), 1.0, sunlit, amblit, additive, atten);
-#endif
 
-#ifdef WATER_FOG
+    color.rgb = applySkyAndWaterFog(pos, additive, atten, color).rgb;
     
-    vec4 fogged = applyWaterFogView(pos, vec4(color.rgb, final_alpha));
-    color.rgb = fogged.rgb;
-    color.a   = fogged.a;
-#else
-    color.a   = final_alpha;
 #endif
 
-#ifndef IS_HUD
-    color.rgb = srgb_to_linear(color.rgb);
-    color.rgb = atmosFragLighting(color.rgb, additive, atten);
 #endif
 
     frag_color = max(color, vec4(0));
diff --git a/indra/newview/app_settings/shaders/class1/deferred/postDeferredGammaCorrect.glsl b/indra/newview/app_settings/shaders/class1/deferred/postDeferredGammaCorrect.glsl
index 64e6bc9da2..3443785e1a 100644
--- a/indra/newview/app_settings/shaders/class1/deferred/postDeferredGammaCorrect.glsl
+++ b/indra/newview/app_settings/shaders/class1/deferred/postDeferredGammaCorrect.glsl
@@ -106,7 +106,7 @@ vec3 toneMap(vec3 color)
     color *= exposure * exp_scale;
 
     // mix ACES and Linear here as a compromise to avoid over-darkening legacy content
-    color = mix(toneMapACES_Hill(color), color, 0.333);
+    color = mix(toneMapACES_Hill(color), color, 0.3);
 #endif
 
     return color;
diff --git a/indra/newview/app_settings/shaders/class1/environment/waterFogF.glsl b/indra/newview/app_settings/shaders/class1/environment/waterFogF.glsl
index cfdb393b34..f796bb5f3f 100644
--- a/indra/newview/app_settings/shaders/class1/environment/waterFogF.glsl
+++ b/indra/newview/app_settings/shaders/class1/environment/waterFogF.glsl
@@ -30,12 +30,14 @@ uniform vec4 waterFogColor;
 uniform float waterFogDensity;
 uniform float waterFogKS;
 
-vec3 getPositionEye();
-
 vec3 srgb_to_linear(vec3 col);
 vec3 linear_to_srgb(vec3 col);
 
-vec4 applyWaterFogView(vec3 pos, vec4 color)
+vec3 atmosFragLighting(vec3 light, vec3 additive, vec3 atten);
+
+// get a water fog color that will apply the appropriate haze to a color given
+// a blend function of (ONE, SOURCE_ALPHA)
+vec4 getWaterFogViewNoClip(vec3 pos)
 {
     vec3 view = normalize(pos);
     //normalize view vector
@@ -67,38 +69,76 @@ vec4 applyWaterFogView(vec3 pos, vec4 color)
     float L = min(t1/t2*t3, 1.0);
     
     float D = pow(0.98, l*kd);
+
+    return vec4(srgb_to_linear(kc.rgb*L), D);
+}
+
+vec4 getWaterFogView(vec3 pos)
+{
+    if (dot(pos, waterPlane.xyz) + waterPlane.w > 0.0)
+    {
+        return vec4(0,0,0,1);
+    }
+
+    return getWaterFogViewNoClip(pos);
+}
+
+vec4 applyWaterFogView(vec3 pos, vec4 color)
+{
+    vec4 fogged = getWaterFogView(pos);
     
-    color.rgb = color.rgb * D + kc.rgb * L;
+    color.rgb = color.rgb * fogged.a + fogged.rgb;
 
     return color;
 }
 
-vec4 applyWaterFogViewLinearNoClip(vec3 pos, vec4 color, vec3 sunlit)
+vec4 applyWaterFogViewLinearNoClip(vec3 pos, vec4 color)
 {
-    color.rgb = linear_to_srgb(color.rgb);
-    color = applyWaterFogView(pos, color);
-    color.rgb = srgb_to_linear(color.rgb);
+    vec4 fogged = getWaterFogViewNoClip(pos);
+    color.rgb *= fogged.a;
+    color.rgb += fogged.rgb;
     return color;
 }
 
-vec4 applyWaterFogViewLinear(vec3 pos, vec4 color, vec3 sunlit)
+vec4 applyWaterFogViewLinear(vec3 pos, vec4 color)
 {
     if (dot(pos, waterPlane.xyz) + waterPlane.w > 0.0)
     {
         return color;
     }
 
-    return applyWaterFogViewLinearNoClip(pos, color, sunlit);
+    return applyWaterFogViewLinearNoClip(pos, color);
 }
 
-vec4 applyWaterFogViewLinear(vec3 pos, vec4 color)
+// for post deferred shaders, apply sky and water fog in a way that is consistent with
+// the deferred rendering haze post effects
+vec4 applySkyAndWaterFog(vec3 pos, vec3 additive, vec3 atten, vec4 color)
 {
-    return applyWaterFogViewLinear(pos, color, vec3(1));
-}
+    bool eye_above_water = dot(vec3(0), waterPlane.xyz) + waterPlane.w > 0.0;
+    bool obj_above_water = dot(pos.xyz, waterPlane.xyz) + waterPlane.w > 0.0;
 
-vec4 applyWaterFog(vec4 color)
-{
-    //normalize view vector
-    return applyWaterFogViewLinear(getPositionEye(), color);
-}
+    if (eye_above_water)
+    {
+        if (!obj_above_water)
+        { 
+            color.rgb = applyWaterFogViewLinearNoClip(pos, color).rgb;
+        }
+        else
+        {
+            color.rgb = atmosFragLighting(color.rgb, additive, atten);
+        }
+    }
+    else
+    {
+        if (obj_above_water)
+        {
+            color.rgb = atmosFragLighting(color.rgb, additive, atten);
+        }
+        else
+        {
+            color.rgb = applyWaterFogViewLinearNoClip(pos, color).rgb;
+        }
+    }
 
+    return color;
+}
diff --git a/indra/newview/app_settings/shaders/class1/lighting/lightWaterAlphaMaskF.glsl b/indra/newview/app_settings/shaders/class1/lighting/lightWaterAlphaMaskF.glsl
deleted file mode 100644
index 670b3ddaf1..0000000000
--- a/indra/newview/app_settings/shaders/class1/lighting/lightWaterAlphaMaskF.glsl
+++ /dev/null
@@ -1,51 +0,0 @@
-/** 
- * @file class1\lighting\lightWaterAlphaMaskF.glsl
- *
- * $LicenseInfo:firstyear=2011&license=viewerlgpl$
- * Second Life Viewer Source Code
- * Copyright (C) 2011, 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
- * $/LicenseInfo$
- */
-
-out vec4 frag_color;
-
-uniform float minimum_alpha;
-
-vec3 atmosLighting(vec3 light);
-vec4 applyWaterFog(vec4 color);
-
-in vec4 vertex_color;
-in vec2 vary_texcoord0;
-
-void default_lighting_water()
-{
-	vec4 color = diffuseLookup(vary_texcoord0.xy);
-
-	if (color.a < minimum_alpha)
-	{
-		discard;
-	}
-
-	color.rgb *= vertex_color.rgb;
-
-	color.rgb = atmosLighting(color.rgb);
-
-	frag_color = max(applyWaterFog(color), vec4(0));
-}
-
diff --git a/indra/newview/app_settings/shaders/class1/lighting/lightWaterF.glsl b/indra/newview/app_settings/shaders/class1/lighting/lightWaterF.glsl
deleted file mode 100644
index 09b4a6e317..0000000000
--- a/indra/newview/app_settings/shaders/class1/lighting/lightWaterF.glsl
+++ /dev/null
@@ -1,42 +0,0 @@
-/** 
- * @file class1\lighting\lightWaterF.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
- * $/LicenseInfo$
- */
-
-out vec4 frag_color;
-
-in vec4 vertex_color;
-in vec2 vary_texcoord0;
-
-vec3 atmosLighting(vec3 light);
-vec4 applyWaterFog(vec4 color);
-
-void default_lighting_water()
-{
-	vec4 color = diffuseLookup(vary_texcoord0.xy) * vertex_color;
-
-	color.rgb = atmosLighting(color.rgb);
-
-	frag_color = max(applyWaterFog(color), vec4(0));
-}
-
diff --git a/indra/newview/app_settings/shaders/class1/lighting/lightWaterNonIndexedF.glsl b/indra/newview/app_settings/shaders/class1/lighting/lightWaterNonIndexedF.glsl
deleted file mode 100644
index 4888fa547c..0000000000
--- a/indra/newview/app_settings/shaders/class1/lighting/lightWaterNonIndexedF.glsl
+++ /dev/null
@@ -1,44 +0,0 @@
-/** 
- * @file class1\lighting\lightWaterNonIndexedF.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
- * $/LicenseInfo$
- */
-
-out vec4 frag_color;
-
-in vec4 vertex_color;
-in vec2 vary_texcoord0;
-
-uniform sampler2D diffuseMap;
-
-vec3 atmosLighting(vec3 light);
-vec4 applyWaterFog(vec4 color);
-
-void default_lighting_water()
-{
-	vec4 color = texture(diffuseMap,vary_texcoord0.xy) * vertex_color;
-
-	color.rgb = atmosLighting(color.rgb);
-
-	frag_color = max(applyWaterFog(color), vec4(0));
-}
-
diff --git a/indra/newview/app_settings/shaders/class1/objects/simpleWaterF.glsl b/indra/newview/app_settings/shaders/class1/objects/simpleWaterF.glsl
deleted file mode 100644
index 2e87ac5bbc..0000000000
--- a/indra/newview/app_settings/shaders/class1/objects/simpleWaterF.glsl
+++ /dev/null
@@ -1,33 +0,0 @@
-/** 
- * @file simpleWaterF.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
- * $/LicenseInfo$
- */
- 
-
-
-void default_lighting_water();
-
-void main() 
-{
-	default_lighting_water();
-}
diff --git a/indra/newview/app_settings/shaders/class1/windlight/atmosphericsHelpersV.glsl b/indra/newview/app_settings/shaders/class1/windlight/atmosphericsHelpersV.glsl
index 6ecbfaecb1..4f88aed765 100644
--- a/indra/newview/app_settings/shaders/class1/windlight/atmosphericsHelpersV.glsl
+++ b/indra/newview/app_settings/shaders/class1/windlight/atmosphericsHelpersV.glsl
@@ -30,7 +30,6 @@ vec3 getSunlitColor();
 vec3 getAmblitColor();
 vec3 getAdditiveColor();
 vec3 getAtmosAttenuation();
-vec3 getPositionEye();
 
 uniform float scene_light_strength;
 
diff --git a/indra/newview/app_settings/shaders/class1/windlight/atmosphericsV.glsl b/indra/newview/app_settings/shaders/class1/windlight/atmosphericsV.glsl
index cc3617ba61..7b59e07243 100644
--- a/indra/newview/app_settings/shaders/class1/windlight/atmosphericsV.glsl
+++ b/indra/newview/app_settings/shaders/class1/windlight/atmosphericsV.glsl
@@ -42,7 +42,6 @@ void calcAtmosphericVars(vec3 inPositionEye, vec3 light_dir, float ambFactor, ou
 
 void calcAtmospherics(vec3 inPositionEye) {
     vec3 P = inPositionEye;
-    setPositionEye(P);
     vec3 tmpsunlit = vec3(1);
     vec3 tmpamblit = vec3(1);
     vec3 tmpaddlit = vec3(1);
diff --git a/indra/newview/app_settings/shaders/class1/windlight/atmosphericsVarsF.glsl b/indra/newview/app_settings/shaders/class1/windlight/atmosphericsVarsF.glsl
index 34669a6796..9d5f60b313 100644
--- a/indra/newview/app_settings/shaders/class1/windlight/atmosphericsVarsF.glsl
+++ b/indra/newview/app_settings/shaders/class1/windlight/atmosphericsVarsF.glsl
@@ -44,5 +44,5 @@ vec3 getAdditiveColor()
 
 vec3 getAtmosAttenuation()
 {
-	return vec3(vary_AtmosAttenuation);
+	return vary_AtmosAttenuation;
 }
diff --git a/indra/newview/app_settings/shaders/class1/windlight/atmosphericsVarsV.glsl b/indra/newview/app_settings/shaders/class1/windlight/atmosphericsVarsV.glsl
index 1b854d80b3..0617bc9908 100644
--- a/indra/newview/app_settings/shaders/class1/windlight/atmosphericsVarsV.glsl
+++ b/indra/newview/app_settings/shaders/class1/windlight/atmosphericsVarsV.glsl
@@ -31,7 +31,6 @@ vec3 additive_color;
 vec3 atmos_attenuation;
 vec3 sunlit_color;
 vec3 amblit_color;
-vec3 position_eye;
 
 vec3 getSunlitColor()
 {
@@ -51,16 +50,6 @@ vec3 getAtmosAttenuation()
 	return atmos_attenuation;
 }
 
-vec3 getPositionEye()
-{
-	return position_eye;
-}
-
-void setPositionEye(vec3 v)
-{
-	position_eye = v;
-}
-
 void setSunlitColor(vec3 v)
 {
 	sunlit_color  = v;
diff --git a/indra/newview/app_settings/shaders/class1/windlight/atmosphericsVarsWaterF.glsl b/indra/newview/app_settings/shaders/class1/windlight/atmosphericsVarsWaterF.glsl
deleted file mode 100644
index 7a6741fe0e..0000000000
--- a/indra/newview/app_settings/shaders/class1/windlight/atmosphericsVarsWaterF.glsl
+++ /dev/null
@@ -1,50 +0,0 @@
-/** 
- * @file class2\wl\atmosphericVarsWaterF.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
- * $/LicenseInfo$
- */
- 
-in vec3 vary_PositionEye;
-in vec3 vary_AdditiveColor;
-in vec3 vary_AtmosAttenuation;
-
-vec3 getSunlitColor()
-{
-	return vec3(0,0,0);
-}
-vec3 getAmblitColor()
-{
-	return vec3(0,0,0);
-}
-vec3 getAdditiveColor()
-{
-	return vary_AdditiveColor;
-}
-vec3 getAtmosAttenuation()
-{
-	return vary_AtmosAttenuation;
-}
-vec3 getPositionEye()
-{
-	return vary_PositionEye;
-}
-
diff --git a/indra/newview/app_settings/shaders/class1/windlight/atmosphericsVarsWaterV.glsl b/indra/newview/app_settings/shaders/class1/windlight/atmosphericsVarsWaterV.glsl
deleted file mode 100644
index 23c3aed4d8..0000000000
--- a/indra/newview/app_settings/shaders/class1/windlight/atmosphericsVarsWaterV.glsl
+++ /dev/null
@@ -1,81 +0,0 @@
-/** 
- * @file class2\wl\atmosphericVarsWaterV.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
- * $/LicenseInfo$
- */
- 
-out vec3 vary_PositionEye;
-out vec3 vary_AdditiveColor;
-out vec3 vary_AtmosAttenuation;
-
-vec3 atmos_attenuation;
-vec3 sunlit_color;
-vec3 amblit_color;
-
-vec3 getSunlitColor()
-{
-	return sunlit_color;
-}
-vec3 getAmblitColor()
-{
-	return amblit_color;
-}
-
-vec3 getAdditiveColor()
-{
-	return vary_AdditiveColor;
-}
-vec3 getAtmosAttenuation()
-{
-	return atmos_attenuation;
-}
-
-vec3 getPositionEye()
-{
-	return vary_PositionEye;
-}
-
-void setPositionEye(vec3 v)
-{
-	vary_PositionEye = v;
-}
-
-void setSunlitColor(vec3 v)
-{
-	sunlit_color  = v;
-}
-
-void setAmblitColor(vec3 v)
-{
-	amblit_color = v;
-}
-
-void setAdditiveColor(vec3 v)
-{
-	vary_AdditiveColor = v;
-}
-
-void setAtmosAttenuation(vec3 v)
-{
-	atmos_attenuation = v;
-	vary_AtmosAttenuation = v;
-}
diff --git a/indra/newview/app_settings/shaders/class2/deferred/alphaF.glsl b/indra/newview/app_settings/shaders/class2/deferred/alphaF.glsl
index b63f3b60f9..acd32a81b3 100644
--- a/indra/newview/app_settings/shaders/class2/deferred/alphaF.glsl
+++ b/indra/newview/app_settings/shaders/class2/deferred/alphaF.glsl
@@ -65,16 +65,11 @@ uniform vec3 light_diffuse[8];
 
 void waterClip(vec3 pos);
 
-#ifdef WATER_FOG
-vec4 applyWaterFogViewLinear(vec3 pos, vec4 color, vec3 sunlit);
-#endif
-
 vec3 srgb_to_linear(vec3 c);
 vec3 linear_to_srgb(vec3 c);
 
 vec2 encode_normal (vec3 n);
-vec3 atmosFragLightingLinear(vec3 light, vec3 additive, vec3 atten);
-
+vec4 applySkyAndWaterFog(vec3 pos, vec3 additive, vec3 atten, vec4 color);
 void calcAtmosphericVarsLinear(vec3 inPositionEye, vec3 norm, vec3 light_dir, out vec3 sunlit, out vec3 amblit, out vec3 atten, out vec3 additive);
 
 #ifdef HAS_SUN_SHADOW
@@ -270,12 +265,6 @@ void main()
 
     color.rgb *= diffuse_linear.rgb;
 
-    color.rgb = atmosFragLightingLinear(color.rgb, additive, atten);
-
-#ifdef WATER_FOG
-    color = applyWaterFogViewLinear(pos.xyz, color, sunlit_linear);
-#endif // WATER_FOG
-
     vec4 light = vec4(0,0,0,0);
     
    #define LIGHT_LOOP(i) light.rgb += calcPointLightOrSpotLight(light_diffuse[i].rgb, diffuse_linear.rgb, pos.xyz, norm, light_position[i], light_direction[i].xyz, light_attenuation[i].x, light_attenuation[i].y, light_attenuation[i].z, light_attenuation[i].w);
@@ -291,6 +280,8 @@ void main()
     // sum local light contrib in linear colorspace
     color.rgb += light.rgb;
 
+    color.rgb = applySkyAndWaterFog(pos.xyz, additive, atten, color).rgb;
+
 #endif // #else // FOR_IMPOSTOR
 
 #ifdef IS_HUD
diff --git a/indra/newview/app_settings/shaders/class2/deferred/pbralphaF.glsl b/indra/newview/app_settings/shaders/class2/deferred/pbralphaF.glsl
index 35d752be02..003dd05e6f 100644
--- a/indra/newview/app_settings/shaders/class2/deferred/pbralphaF.glsl
+++ b/indra/newview/app_settings/shaders/class2/deferred/pbralphaF.glsl
@@ -82,11 +82,7 @@ vec3 srgb_to_linear(vec3 c);
 vec3 linear_to_srgb(vec3 c);
 
 void calcAtmosphericVarsLinear(vec3 inPositionEye, vec3 norm, vec3 light_dir, out vec3 sunlit, out vec3 amblit, out vec3 atten, out vec3 additive);
-vec3 atmosFragLightingLinear(vec3 color, vec3 additive, vec3 atten);
-
-#ifdef WATER_FOG
-vec4 applyWaterFogViewLinear(vec3 pos, vec4 color, vec3 sunlit);
-#endif
+vec4 applySkyAndWaterFog(vec3 pos, vec3 additive, vec3 atten, vec4 color);
 
 void calcHalfVectors(vec3 lv, vec3 n, vec3 v, out vec3 h, out vec3 l, out float nh, out float nl, out float nv, out float vh, out float lightDist);
 float calcLegacyDistanceAttenuation(float distance, float falloff);
@@ -228,13 +224,6 @@ void main()
 
     color = pbrBaseLight(diffuseColor, specularColor, metallic, v, norm.xyz, perceptualRoughness, light_dir, sunlit_linear, scol, radiance, irradiance, colorEmissive, ao, additive, atten);
 
-    color.rgb = atmosFragLightingLinear(color.rgb, additive, atten);
-    
-#ifdef WATER_FOG
-    vec4 temp = applyWaterFogViewLinear(pos, vec4(color, 0.0), sunlit_linear);
-    color = temp.rgb;
-#endif
-
     vec3 light = vec3(0);
 
     // Punctual lights
@@ -250,7 +239,8 @@ void main()
 
     color.rgb += light.rgb;
 
-    
+    color.rgb = applySkyAndWaterFog(pos.xyz, additive, atten, vec4(color, 1.0)).rgb;
+
     float a = basecolor.a*vertex_color.a;
     
     frag_color = max(vec4(color.rgb,a), vec4(0));
@@ -305,6 +295,7 @@ void main()
     
     float a = basecolor.a*vertex_color.a;
     color += colorEmissive;
+
     color = linear_to_srgb(color);
     frag_color = max(vec4(color.rgb,a), vec4(0));
 }
diff --git a/indra/newview/app_settings/shaders/class3/deferred/fullbrightShinyF.glsl b/indra/newview/app_settings/shaders/class3/deferred/fullbrightShinyF.glsl
index 5483a4e29c..8430cca325 100644
--- a/indra/newview/app_settings/shaders/class3/deferred/fullbrightShinyF.glsl
+++ b/indra/newview/app_settings/shaders/class3/deferred/fullbrightShinyF.glsl
@@ -40,6 +40,8 @@ in vec3 vary_position;
 uniform samplerCube environmentMap;
 
 vec3 atmosFragLighting(vec3 light, vec3 additive, vec3 atten);
+vec4 applyWaterFogViewLinear(vec3 pos, vec4 color);
+
 void calcAtmosphericVars(vec3 inPositionEye, vec3 light_dir, float ambFactor, out vec3 sunlit, out vec3 amblit, out vec3 additive, out vec3 atten);
 
 vec3 linear_to_srgb(vec3 c);
@@ -83,7 +85,6 @@ void main()
     color.rgb = srgb_to_linear(color.rgb);
 
     applyLegacyEnv(color.rgb, legacyenv, spec, pos, norm, env_intensity);
-    color.rgb = atmosFragLighting(color.rgb, additive, atten);
 #endif
 
 	color.a = 1.0;
diff --git a/indra/newview/app_settings/shaders/class3/deferred/hazeF.glsl b/indra/newview/app_settings/shaders/class3/deferred/hazeF.glsl
new file mode 100644
index 0000000000..0b154e82ad
--- /dev/null
+++ b/indra/newview/app_settings/shaders/class3/deferred/hazeF.glsl
@@ -0,0 +1,106 @@
+/**
+ * @file class3/deferred/hazeF.glsl
+ *
+ * $LicenseInfo:firstyear=2023&license=viewerlgpl$
+ * Second Life Viewer Source Code
+ * Copyright (C) 2023, 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
+ * $/LicenseInfo$
+ */
+
+out vec4 frag_color;
+
+uniform sampler2D normalMap;
+
+// Inputs
+uniform vec3 sun_dir;
+uniform vec3 moon_dir;
+uniform int  sun_up_factor;
+in vec2 vary_fragcoord;
+
+vec3 getNorm(vec2 pos_screen);
+vec4 getPositionWithDepth(vec2 pos_screen, float depth);
+void calcAtmosphericVarsLinear(vec3 inPositionEye, vec3 norm, vec3 light_dir, out vec3 sunlit, out vec3 amblit, out vec3 atten, out vec3 additive);
+
+float getDepth(vec2 pos_screen);
+
+vec3 linear_to_srgb(vec3 c);
+vec3 srgb_to_linear(vec3 c);
+
+uniform vec4 waterPlane;
+
+uniform int cube_snapshot;
+
+uniform float sky_hdr_scale;
+
+void main()
+{
+    vec2  tc           = vary_fragcoord.xy;
+    float depth        = getDepth(tc.xy);
+    vec4  pos          = getPositionWithDepth(tc, depth);
+    vec4  norm         = texture(normalMap, tc);
+    norm.xyz           = getNorm(tc);
+    vec3  light_dir   = (sun_up_factor == 1) ? sun_dir : moon_dir;
+
+    vec3  color = vec3(0);
+    float bloom = 0.0;
+
+    vec3 sunlit;
+    vec3 amblit;
+    vec3 additive;
+    vec3 atten;
+
+    calcAtmosphericVarsLinear(pos.xyz, norm.xyz, light_dir, sunlit, amblit, additive, atten);
+
+    vec3 sunlit_linear = srgb_to_linear(sunlit);
+    
+    // mask off atmospherics below water (when camera is under water)
+    bool do_atmospherics = false;
+        
+    if (dot(vec3(0), waterPlane.xyz) + waterPlane.w > 0.0 ||
+        dot(pos.xyz, waterPlane.xyz) + waterPlane.w > 0.0)
+    {
+        do_atmospherics = true;
+    }
+    
+    vec3  irradiance = vec3(0);
+    vec3  radiance  = vec3(0);
+
+    if (depth >= 1.0)
+    {
+        //should only be true of sky, clouds, sun/moon, and stars
+        discard;
+    }
+
+   float alpha = 0.0;
+
+    if (do_atmospherics)
+    {
+        alpha = atten.r;
+        color = srgb_to_linear(additive*2.0);
+        color *= sky_hdr_scale;
+    }
+    else
+    {
+        color = vec3(0,0,0);
+        alpha = 1.0;
+    }
+
+    frag_color = max(vec4(color.rgb, alpha), vec4(0)); //output linear since local lights will be added to this shader's results
+    
+}
diff --git a/indra/newview/app_settings/shaders/class3/deferred/materialF.glsl b/indra/newview/app_settings/shaders/class3/deferred/materialF.glsl
index acff03ec4b..ec1e49eeb4 100644
--- a/indra/newview/app_settings/shaders/class3/deferred/materialF.glsl
+++ b/indra/newview/app_settings/shaders/class3/deferred/materialF.glsl
@@ -37,11 +37,7 @@
 uniform float emissive_brightness;  // fullbright flag, 1.0 == fullbright, 0.0 otherwise
 uniform int sun_up_factor;
 
-#ifdef WATER_FOG
-vec4 applyWaterFogViewLinear(vec3 pos, vec4 color, vec3 sunlit);
-#endif
-
-vec3 atmosFragLightingLinear(vec3 l, vec3 additive, vec3 atten);
+vec4 applySkyAndWaterFog(vec3 pos, vec3 additive, vec3 atten, vec4 color);
 vec3 scaleSoftClipFragLinear(vec3 l);
 void calcAtmosphericVarsLinear(vec3 inPositionEye, vec3 norm, vec3 light_dir, out vec3 sunlit, out vec3 amblit, out vec3 atten, out vec3 additive);
 void calcHalfVectors(vec3 lv, vec3 n, vec3 v, out vec3 h, out vec3 l, out float nh, out float nl, out float nv, out float vh, out float lightDist);
@@ -386,13 +382,6 @@ void main()
         glare += cur_glare;
     }
 
-    color.rgb = atmosFragLightingLinear(color.rgb, additive, atten); 
-
-#ifdef WATER_FOG
-    vec4 temp = applyWaterFogViewLinear(pos, vec4(color, 0.0), sunlit_linear);
-    color = temp.rgb;
-#endif
-
     vec3 npos = normalize(-pos.xyz);
     vec3 light = vec3(0, 0, 0);
 
@@ -408,6 +397,8 @@ void main()
 
     color += light;
 
+    color.rgb = applySkyAndWaterFog(pos.xyz, additive, atten, vec4(color, 1.0)).rgb;
+
     glare *= 1.0-emissive;
     glare = min(glare, 1.0);
     float al = max(diffcol.a, glare) * vertex_color.a;
diff --git a/indra/newview/app_settings/shaders/class3/deferred/softenLightF.glsl b/indra/newview/app_settings/shaders/class3/deferred/softenLightF.glsl
index 35e99c5bd2..5e8fe9301a 100644
--- a/indra/newview/app_settings/shaders/class3/deferred/softenLightF.glsl
+++ b/indra/newview/app_settings/shaders/class3/deferred/softenLightF.glsl
@@ -83,10 +83,6 @@ uniform vec4 waterPlane;
 
 uniform int cube_snapshot;
 
-#ifdef WATER_FOG
-vec4 applyWaterFogViewLinear(vec3 pos, vec4 color);
-#endif
-
 uniform float sky_hdr_scale;
 
 void calcHalfVectors(vec3 lv, vec3 n, vec3 v, out vec3 h, out vec3 l, out float nh, out float nl, out float nv, out float vh, out float lightDist);
@@ -167,18 +163,6 @@ void main()
     vec3 sunlit_linear = srgb_to_linear(sunlit);
     vec3 amblit_linear = amblit;
 
-    bool do_atmospherics = false;
-
-#ifndef WATER_FOG
-    // when above water, mask off atmospherics below water
-    if (dot(pos.xyz, waterPlane.xyz) + waterPlane.w > 0.0)
-    {
-        do_atmospherics = true;
-    }
-#else
-    do_atmospherics = true;
-#endif
-
     vec3  irradiance = vec3(0);
     vec3  radiance  = vec3(0);
 
@@ -203,11 +187,6 @@ void main()
 
         vec3 v = -normalize(pos.xyz);
         color = pbrBaseLight(diffuseColor, specularColor, metallic, v, norm.xyz, perceptualRoughness, light_dir, sunlit_linear, scol, radiance, irradiance, colorEmissive, ao, additive, atten);
-        
-        if (do_atmospherics)
-        {
-            color = atmosFragLightingLinear(color, additive, atten);
-        }
     }
     else if (!GET_GBUFFER_FLAG(GBUFFER_FLAG_HAS_ATMOS))
     {
@@ -273,21 +252,8 @@ void main()
         {  // add environment map
             applyLegacyEnv(color, legacyenv, spec, pos.xyz, norm.xyz, envIntensity);
         }
-
-        
-        if (do_atmospherics)
-        {
-            color = atmosFragLightingLinear(color, additive, atten);
-        }
    }
 
-    
-
-    #ifdef WATER_FOG
-        vec4 fogged = applyWaterFogViewLinear(pos.xyz, vec4(color, bloom));
-        color       = fogged.rgb;
-    #endif
-
     frag_color.rgb = max(color.rgb, vec3(0)); //output linear since local lights will be added to this shader's results
     frag_color.a = 0.0;
 }
diff --git a/indra/newview/app_settings/shaders/class3/deferred/waterHazeF.glsl b/indra/newview/app_settings/shaders/class3/deferred/waterHazeF.glsl
new file mode 100644
index 0000000000..f6b8299f91
--- /dev/null
+++ b/indra/newview/app_settings/shaders/class3/deferred/waterHazeF.glsl
@@ -0,0 +1,65 @@
+/**
+ * @file class3/deferred/waterHazeF.glsl
+ *
+ * $LicenseInfo:firstyear=2023&license=viewerlgpl$
+ * Second Life Viewer Source Code
+ * Copyright (C) 2023, 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
+ * $/LicenseInfo$
+ */
+
+out vec4 frag_color;
+
+// Inputs
+in vec4 vary_fragcoord;
+
+uniform sampler2D normalMap;
+
+vec4 getPositionWithDepth(vec2 pos_screen, float depth);
+float getDepth(vec2 pos_screen);
+
+vec4 getWaterFogView(vec3 pos);
+
+uniform int above_water;
+
+void main()
+{
+    vec2  tc           = vary_fragcoord.xy/vary_fragcoord.w*0.5+0.5;
+    float depth        = getDepth(tc.xy);
+
+    if (above_water > 0)
+    { 
+        // we want to depth test when the camera is above water, but some GPUs have a hard time
+        // with depth testing against render targets that are bound for sampling in the same shader
+        // so we do it manually here
+
+        float cur_depth = vary_fragcoord.z/vary_fragcoord.w*0.5+0.5;
+        if (cur_depth > depth)
+        {
+            discard;
+        }
+    }
+
+    vec4  pos          = getPositionWithDepth(tc, depth);
+    vec4  norm         = texture(normalMap, tc);
+
+    vec4 fogged = getWaterFogView(pos.xyz);
+
+    frag_color = max(fogged, vec4(0)); //output linear since local lights will be added to this shader's results
+    
+}
diff --git a/indra/newview/app_settings/shaders/class1/lighting/lightWaterAlphaMaskNonIndexedF.glsl b/indra/newview/app_settings/shaders/class3/deferred/waterHazeV.glsl
index 2e5ed57014..16381a5d51 100644
--- a/indra/newview/app_settings/shaders/class1/lighting/lightWaterAlphaMaskNonIndexedF.glsl
+++ b/indra/newview/app_settings/shaders/class3/deferred/waterHazeV.glsl
@@ -1,55 +1,59 @@
-/** 
- * @file class1\lighting\lightWaterAlphaMaskNonIndexedF.glsl
+/**
+ * @file class3/deferred/waterHazeV.glsl
  *
- * $LicenseInfo:firstyear=2011&license=viewerlgpl$
+ * $LicenseInfo:firstyear=2023&license=viewerlgpl$
  * Second Life Viewer Source Code
- * Copyright (C) 2011, Linden Research, Inc.
- * 
+ * Copyright (C) 2023, 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
  * $/LicenseInfo$
  */
 
-out vec4 frag_color;
+in vec3 position;
 
-uniform float minimum_alpha;
+uniform vec2 screen_res;
 
-uniform sampler2D diffuseMap;
+out vec4 vary_fragcoord;
 
-vec3 atmosLighting(vec3 light);
-vec4 applyWaterFog(vec4 color);
+// forwards
+void setAtmosAttenuation(vec3 c);
+void setAdditiveColor(vec3 c);
 
-in vec4 vertex_color;
-in vec2 vary_texcoord0;
+uniform vec4 waterPlane;
 
-void default_lighting_water()
+uniform int above_water;
+
+uniform mat4 modelview_projection_matrix;
+
+void main()
 {
-	vec4 color = texture(diffuseMap,vary_texcoord0.xy);
+	//transform vertex
+	vec4 pos = vec4(position.xyz, 1.0);
 
-	if (color.a < minimum_alpha)
-	{
-		discard;
-	}
+    if (above_water > 0)
+    {
+        pos = modelview_projection_matrix*pos;
+    }
 
-	color.rgb *= vertex_color.rgb;
+    gl_Position = pos; 
 
-	color.rgb = atmosLighting(color.rgb);
+    // appease OSX GLSL compiler/linker by touching all the varyings we said we would
+    setAtmosAttenuation(vec3(1));
+    setAdditiveColor(vec3(0));
 
-	color = applyWaterFog(color);
-	
-	frag_color = max(color, vec4(0));
+	vary_fragcoord = pos;
 }
-
diff --git a/indra/newview/app_settings/shaders/class3/environment/underWaterF.glsl b/indra/newview/app_settings/shaders/class3/environment/underWaterF.glsl
index e99ad5b474..223e55eb69 100644
--- a/indra/newview/app_settings/shaders/class3/environment/underWaterF.glsl
+++ b/indra/newview/app_settings/shaders/class3/environment/underWaterF.glsl
@@ -30,7 +30,6 @@ uniform sampler2D bumpMap;
 
 #ifdef TRANSPARENT_WATER
 uniform sampler2D screenTex;
-uniform sampler2D screenDepth;
 #endif
 
 uniform vec4 fogCol;
@@ -55,7 +54,7 @@ in vec4 littleWave;
 in vec4 view;
 in vec3 vary_position;
 
-vec4 applyWaterFogViewLinearNoClip(vec3 pos, vec4 color, vec3 sunlit);
+vec4 applyWaterFogViewLinearNoClip(vec3 pos, vec4 color);
 
 void main() 
 {
@@ -77,5 +76,7 @@ void main()
     vec4 fb = vec4(waterFogColorLinear, 0.0);
 #endif
     
-	frag_color = max(applyWaterFogViewLinearNoClip(vary_position, fb, vec3(1)), vec4(0));
+    fb = applyWaterFogViewLinearNoClip(vary_position, fb);
+
+    frag_color = max(fb, vec4(0));
 }
diff --git a/indra/newview/app_settings/shaders/class3/environment/waterF.glsl b/indra/newview/app_settings/shaders/class3/environment/waterF.glsl
index ddade462be..b364e454e8 100644
--- a/indra/newview/app_settings/shaders/class3/environment/waterF.glsl
+++ b/indra/newview/app_settings/shaders/class3/environment/waterF.glsl
@@ -32,9 +32,8 @@ float sampleDirectionalShadow(vec3 pos, vec3 norm, vec2 pos_screen);
 #endif
 
 vec3 scaleSoftClipFragLinear(vec3 l);
-vec3 atmosFragLightingLinear(vec3 light, vec3 additive, vec3 atten);
 void calcAtmosphericVarsLinear(vec3 inPositionEye, vec3 norm, vec3 light_dir, out vec3 sunlit, out vec3 amblit, out vec3 atten, out vec3 additive);
-vec4 applyWaterFogViewLinear(vec3 pos, vec4 color, vec3 sunlit);
+vec4 applyWaterFogViewLinear(vec3 pos, vec4 color);
 
 // PBR interface
 vec2 BRDF(float NoV, float roughness);
@@ -77,7 +76,7 @@ uniform sampler2D bumpMap2;
 uniform float     blend_factor;
 #ifdef TRANSPARENT_WATER
 uniform sampler2D screenTex;
-uniform sampler2D screenDepth;
+uniform sampler2D depthMap;
 #endif
 
 uniform sampler2D refTex;
@@ -211,7 +210,7 @@ void main()
 
 #ifdef TRANSPARENT_WATER
     vec4 fb = texture(screenTex, distort2);
-    float depth = texture(screenDepth, distort2).r;
+    float depth = texture(depthMap, distort2).r;
     vec3 refPos = getPositionWithNDC(vec3(distort2*2.0-vec2(1.0), depth*2.0-1.0));
 
     if (refPos.z > pos.z-0.05)
@@ -219,13 +218,12 @@ void main()
         //we sampled an above water sample, don't distort
         distort2 = distort;
         fb = texture(screenTex, distort2);
-        depth = texture(screenDepth, distort2).r;
+        depth = texture(depthMap, distort2).r;
         refPos = getPositionWithNDC(vec3(distort2 * 2.0 - vec2(1.0), depth * 2.0 - 1.0));
     }
 
-    fb = applyWaterFogViewLinear(refPos, fb, sunlit);
 #else
-    vec4 fb = applyWaterFogViewLinear(viewVec*2048.0, vec4(1.0), sunlit_linear);
+    vec4 fb = applyWaterFogViewLinear(viewVec*2048.0, vec4(1.0));
 #endif
 
     // fudge sample on other side of water to be a tad darker
@@ -282,8 +280,6 @@ void main()
 
     color = ((1.0 - f) * color) + fb.rgb;
 
-    color = atmosFragLightingLinear(color, additive, atten);
-
     float spec = min(max(max(punctual.r, punctual.g), punctual.b), 0.05);
     
     frag_color = max(vec4(color, spec), vec4(0));
diff --git a/indra/newview/llappviewerwin32.cpp b/indra/newview/llappviewerwin32.cpp
index 8cf80f388b..41101e79a6 100644
--- a/indra/newview/llappviewerwin32.cpp
+++ b/indra/newview/llappviewerwin32.cpp
@@ -369,6 +369,35 @@ void ll_nvapi_init(NvDRSSessionHandle hSession)
 		nvapi_error(status);
 		return;
 	}
+
+	// enable Threaded Optimization instead of letting the driver decide
+	status = NvAPI_DRS_GetSetting(hSession, hProfile, OGL_THREAD_CONTROL_ID, &drsSetting);
+	if (status == NVAPI_SETTING_NOT_FOUND || (status == NVAPI_OK && drsSetting.u32CurrentValue != OGL_THREAD_CONTROL_ENABLE))
+	{
+		drsSetting.version = NVDRS_SETTING_VER;
+		drsSetting.settingId = OGL_THREAD_CONTROL_ID;
+		drsSetting.settingType = NVDRS_DWORD_TYPE;
+		drsSetting.u32CurrentValue = OGL_THREAD_CONTROL_ENABLE;
+		status = NvAPI_DRS_SetSetting(hSession, hProfile, &drsSetting);
+		if (status != NVAPI_OK)
+		{
+			nvapi_error(status);
+			return;
+		}
+
+		// Now we apply (or save) our changes to the system
+		status = NvAPI_DRS_SaveSettings(hSession);
+		if (status != NVAPI_OK)
+		{
+			nvapi_error(status);
+			return;
+		}
+	}
+	else if (status != NVAPI_OK)
+	{
+		nvapi_error(status);
+		return;
+	}
 }
 
 //#define DEBUGGING_SEH_FILTER 1
diff --git a/indra/newview/lldrawpool.cpp b/indra/newview/lldrawpool.cpp
index fca0f1c978..50210b06c4 100644
--- a/indra/newview/lldrawpool.cpp
+++ b/indra/newview/lldrawpool.cpp
@@ -320,6 +320,14 @@ void LLFacePool::addFaceReference(LLFace *facep)
 	}
 }
 
+void LLFacePool::pushFaceGeometry()
+{
+    for (LLFace* const& face : mDrawFace)
+    {
+        face->renderIndexed();
+    }
+}
+
 BOOL LLFacePool::verify() const
 {
 	BOOL ok = TRUE;
diff --git a/indra/newview/lldrawpool.h b/indra/newview/lldrawpool.h
index 5414dba6bf..0925a01439 100644
--- a/indra/newview/lldrawpool.h
+++ b/indra/newview/lldrawpool.h
@@ -53,7 +53,9 @@ public:
         // before grass, so grass should be the first alpha masked pool.  Other ordering should be done
         // based on fill rate and likelihood to occlude future passes (faster, large occluders first).
         //  
-		POOL_SIMPLE = 1,
+        POOL_SKY = 1,
+        POOL_WL_SKY,
+		POOL_SIMPLE,
 		POOL_FULLBRIGHT,
 		POOL_BUMP,
 		POOL_TERRAIN,
@@ -64,8 +66,6 @@ public:
 		POOL_TREE,
 		POOL_ALPHA_MASK,
 		POOL_FULLBRIGHT_ALPHA_MASK,
-        POOL_SKY,
-        POOL_WL_SKY,
 		POOL_AVATAR,
 		POOL_CONTROL_AV, // Animesh
 		POOL_GLOW,
@@ -118,8 +118,8 @@ public:
 	virtual LLViewerTexture* getTexture() = 0;
 	virtual BOOL isFacePool() { return FALSE; }
 	virtual void resetDrawOrders() = 0;
+    virtual void pushFaceGeometry() {}
 
-protected:
 	S32 mShaderLevel;
 	S32	mId;
 	U32 mType;				// Type of draw pool
@@ -429,6 +429,9 @@ public:
 	
 	BOOL isFacePool() { return TRUE; }
 
+    // call drawIndexed on every draw face
+    void pushFaceGeometry();
+
 	friend class LLFace;
 	friend class LLPipeline;
 public:
diff --git a/indra/newview/lldrawpoolalpha.cpp b/indra/newview/lldrawpoolalpha.cpp
index 052a1d796a..41dc95a8cb 100644
--- a/indra/newview/lldrawpoolalpha.cpp
+++ b/indra/newview/lldrawpoolalpha.cpp
@@ -178,27 +178,24 @@ void LLDrawPoolAlpha::renderPostDeferred(S32 pass)
 
     fullbright_shader   = 
         (LLPipeline::sImpostorRender) ? &gDeferredFullbrightAlphaMaskProgram :
-        (LLPipeline::sUnderWaterRender) ? &gDeferredFullbrightWaterAlphaProgram : 
         (LLPipeline::sRenderingHUDs) ? &gHUDFullbrightAlphaMaskAlphaProgram :
         &gDeferredFullbrightAlphaMaskAlphaProgram;
     prepare_alpha_shader(fullbright_shader, true, true, water_sign);
 
     simple_shader   = 
         (LLPipeline::sImpostorRender) ? &gDeferredAlphaImpostorProgram :
-        (LLPipeline::sUnderWaterRender) ? &gDeferredAlphaWaterProgram : 
         (LLPipeline::sRenderingHUDs) ? &gHUDAlphaProgram :
         &gDeferredAlphaProgram;
 
     prepare_alpha_shader(simple_shader, false, true, water_sign); //prime simple shader (loads shadow relevant uniforms)
 
-    LLGLSLShader* materialShader = LLPipeline::sUnderWaterRender ? gDeferredMaterialWaterProgram : gDeferredMaterialProgram;
+    LLGLSLShader* materialShader = gDeferredMaterialProgram;
     for (int i = 0; i < LLMaterial::SHADER_COUNT*2; ++i)
     {
         prepare_alpha_shader(&materialShader[i], false, true, water_sign);
     }
 
     pbr_shader = 
-        (LLPipeline::sUnderWaterRender) ? &gDeferredPBRAlphaWaterProgram : 
         (LLPipeline::sRenderingHUDs) ? &gHUDPBRAlphaProgram : 
         &gDeferredPBRAlphaProgram;
 
@@ -727,11 +724,6 @@ void LLDrawPoolAlpha::renderAlpha(U32 mask, bool depth_only, bool rigged)
 
                         llassert(mask < LLMaterial::SHADER_COUNT);
                         target_shader = &(gDeferredMaterialProgram[mask]);
-
-                        if (LLPipeline::sUnderWaterRender)
-                        {
-                            target_shader = &(gDeferredMaterialWaterProgram[mask]);
-                        }
                     }
                     else if (!params.mFullbright)
                     {
diff --git a/indra/newview/lldrawpoolavatar.cpp b/indra/newview/lldrawpoolavatar.cpp
index 342b76d93b..7f6409dbde 100644
--- a/indra/newview/lldrawpoolavatar.cpp
+++ b/indra/newview/lldrawpoolavatar.cpp
@@ -509,14 +509,7 @@ void LLDrawPoolAvatar::beginRigid()
 
 	if (gPipeline.shadersLoaded())
 	{
-		if (LLPipeline::sUnderWaterRender)
-		{
-			sVertexProgram = &gObjectAlphaMaskNoColorWaterProgram;
-		}
-		else
-		{
-			sVertexProgram = &gObjectAlphaMaskNoColorProgram;
-		}
+		sVertexProgram = &gObjectAlphaMaskNoColorProgram;
 		
 		if (sVertexProgram != NULL)
 		{	//eyeballs render with the specular shader
diff --git a/indra/newview/lldrawpoolmaterials.cpp b/indra/newview/lldrawpoolmaterials.cpp
index 6a7e05ac74..c0e4ed38c1 100644
--- a/indra/newview/lldrawpoolmaterials.cpp
+++ b/indra/newview/lldrawpoolmaterials.cpp
@@ -82,14 +82,7 @@ void LLDrawPoolMaterials::beginDeferredPass(S32 pass)
 	
     U32 idx = shader_idx[pass];
     
-    if (LLPipeline::sUnderWaterRender)
-    {
-        mShader = &(gDeferredMaterialWaterProgram[idx]);
-    }
-    else
-    {
-        mShader = &(gDeferredMaterialProgram[idx]);
-    }
+    mShader = &(gDeferredMaterialProgram[idx]);
     
     if (rigged)
     {
diff --git a/indra/newview/lldrawpoolsimple.cpp b/indra/newview/lldrawpoolsimple.cpp
index a89c9d4561..696618f75b 100644
--- a/indra/newview/lldrawpoolsimple.cpp
+++ b/indra/newview/lldrawpoolsimple.cpp
@@ -193,10 +193,6 @@ void LLDrawPoolFullbright::renderPostDeferred(S32 pass)
     {
         shader = &gHUDFullbrightProgram;
     }
-    else if (LLPipeline::sUnderWaterRender)
-    {
-        shader = &gDeferredFullbrightWaterProgram;
-    }
     else
     {
         shader = &gDeferredFullbrightProgram;
@@ -225,10 +221,6 @@ void LLDrawPoolFullbrightAlphaMask::renderPostDeferred(S32 pass)
     {
         shader = &gHUDFullbrightAlphaMaskProgram;
     }
-    else if (LLPipeline::sUnderWaterRender)
-    {
-        shader = &gDeferredFullbrightAlphaMaskWaterProgram;
-    }
     else
     {
         shader = &gDeferredFullbrightAlphaMaskProgram;
diff --git a/indra/newview/lldrawpoolwater.cpp b/indra/newview/lldrawpoolwater.cpp
index 14f3142e1b..ca93815de7 100644
--- a/indra/newview/lldrawpoolwater.cpp
+++ b/indra/newview/lldrawpoolwater.cpp
@@ -206,7 +206,7 @@ void LLDrawPoolWater::renderPostDeferred(S32 pass)
             }
         }
 
-        gPipeline.bindDeferredShader(*shader);
+        gPipeline.bindDeferredShader(*shader, nullptr, &gPipeline.mWaterDis);
 
         //bind normal map
         S32 bumpTex = shader->enableTexture(LLViewerShaderMgr::BUMP_MAP);
@@ -238,7 +238,6 @@ void LLDrawPoolWater::renderPostDeferred(S32 pass)
 
         // bind reflection texture from RenderTarget
         S32 screentex = shader->enableTexture(LLShaderMgr::WATER_SCREENTEX);
-        S32 screenDepth = shader->enableTexture(LLShaderMgr::WATER_SCREENDEPTH);
 
         F32 screenRes[] = { 1.f / gGLViewport[2], 1.f / gGLViewport[3] };
 
@@ -255,11 +254,6 @@ void LLDrawPoolWater::renderPostDeferred(S32 pass)
             gGL.getTexUnit(screentex)->bind(&gPipeline.mWaterDis);
         }
 
-        if (screenDepth > -1)
-        {
-            gGL.getTexUnit(screenDepth)->bind(&gPipeline.mWaterDis, true);
-        }
-
         if (mShaderLevel == 1)
         {
             fog_color.mV[VW] = log(fog_density) / log(2);
@@ -342,7 +336,6 @@ void LLDrawPoolWater::renderPostDeferred(S32 pass)
         shader->disableTexture(LLShaderMgr::BUMP_MAP);
         shader->disableTexture(LLShaderMgr::DIFFUSE_MAP);
         shader->disableTexture(LLShaderMgr::WATER_REFTEX);
-        shader->disableTexture(LLShaderMgr::WATER_SCREENDEPTH);
 
         // clean up
         gPipeline.unbindDeferredShader(*shader);
diff --git a/indra/newview/lldrawpoolwlsky.cpp b/indra/newview/lldrawpoolwlsky.cpp
index 05ee328e43..b14235f25c 100644
--- a/indra/newview/lldrawpoolwlsky.cpp
+++ b/indra/newview/lldrawpoolwlsky.cpp
@@ -87,6 +87,9 @@ void LLDrawPoolWLSky::endDeferredPass(S32 pass)
     cloud_shader = nullptr;
     sun_shader   = nullptr;
     moon_shader  = nullptr;
+
+    // clear the depth buffer so haze shaders can use unwritten depth as a mask
+    glClear(GL_DEPTH_BUFFER_BIT);
 }
 
 void LLDrawPoolWLSky::renderDome(const LLVector3& camPosLocal, F32 camHeightLocal, LLGLSLShader * shader) const
diff --git a/indra/newview/lleventpoll.cpp b/indra/newview/lleventpoll.cpp
index 26782e53f0..6ffc8f7bdd 100644
--- a/indra/newview/lleventpoll.cpp
+++ b/indra/newview/lleventpoll.cpp
@@ -102,6 +102,7 @@ namespace Details
 
     void LLEventPollImpl::handleMessage(const LLSD& content)
     {
+        LL_PROFILE_ZONE_SCOPED_CATEGORY_APP;
         std::string	msg_name = content["message"];
         LLSD message;
         message["sender"] = mSenderIp;
@@ -149,6 +150,14 @@ namespace Details
 
         mAdapter = httpAdapter;
 
+        LL::WorkQueue::ptr_t main_queue = nullptr;
+
+        // HACK -- grab the mainloop workqueue to move execution of the handler
+        // to a place that's safe in the main thread
+#if 1
+        main_queue = LL::WorkQueue::getInstance("mainloop");
+#endif
+
         // continually poll for a server update until we've been flagged as 
         // finished 
         while (!mDone)
@@ -266,13 +275,26 @@ namespace Details
             // was LL_INFOS() but now that CoarseRegionUpdate is TCP @ 1/second, it'd be too verbose for viewer logs. -MG
             LL_DEBUGS("LLEventPollImpl") << " <" << counter << "> " << events.size() << "events (id " << acknowledge << ")" << LL_ENDL;
 
+
             LLSD::array_const_iterator i = events.beginArray();
             LLSD::array_const_iterator end = events.endArray();
             for (; i != end; ++i)
             {
                 if (i->has("message"))
                 {
-                    handleMessage(*i);
+                    if (main_queue)
+                    { // shuttle to a sensible spot in the main thread instead
+                        // of wherever this coroutine happens to be executing
+                        const LLSD& msg = *i;
+                        main_queue->post([this, msg]()
+                            { 
+                                handleMessage(msg); 
+                            });
+                    }
+                    else
+                    {
+                        handleMessage(*i);
+                    }
                 }
             }
         }
diff --git a/indra/newview/llfetchedgltfmaterial.cpp b/indra/newview/llfetchedgltfmaterial.cpp
index 1a47293523..46b9dffae9 100644
--- a/indra/newview/llfetchedgltfmaterial.cpp
+++ b/indra/newview/llfetchedgltfmaterial.cpp
@@ -29,6 +29,8 @@
 
 #include "llviewertexturelist.h"
 #include "llavatarappearancedefines.h"
+#include "llviewerobject.h"
+#include "llselectmgr.h"
 #include "llshadermgr.h"
 #include "pipeline.h"
 
@@ -252,3 +254,55 @@ void LLFetchedGLTFMaterial::materialComplete()
     materialCompleteCallbacks.clear();
     materialCompleteCallbacks.shrink_to_fit();
 }
+
+LLPointer<LLViewerFetchedTexture> LLFetchedGLTFMaterial::getUITexture()
+{
+    if (mFetching)
+    {
+        return nullptr;
+    }
+
+    auto fetch_texture_for_ui = [](LLPointer<LLViewerFetchedTexture>& img, const LLUUID& id)
+    {
+        if (id.notNull())
+        {
+            if (LLAvatarAppearanceDefines::LLAvatarAppearanceDictionary::isBakedImageId(id))
+            {
+                LLViewerObject* obj = LLSelectMgr::getInstance()->getSelection()->getFirstObject();
+                if (obj)
+                {
+                    LLViewerTexture* viewerTexture = obj->getBakedTextureForMagicId(id);
+                    img = viewerTexture ? dynamic_cast<LLViewerFetchedTexture*>(viewerTexture) : NULL;
+                }
+
+            }
+            else
+            {
+                img = LLViewerTextureManager::getFetchedTexture(id, FTT_DEFAULT, TRUE, LLGLTexture::BOOST_NONE, LLViewerTexture::LOD_TEXTURE);
+            }
+        }
+        if (img)
+        {
+            img->setBoostLevel(LLGLTexture::BOOST_PREVIEW);
+            img->forceToSaveRawImage(0);
+        }
+    };
+
+    fetch_texture_for_ui(mBaseColorTexture, mTextureId[LLGLTFMaterial::GLTF_TEXTURE_INFO_BASE_COLOR]);
+    fetch_texture_for_ui(mNormalTexture, mTextureId[LLGLTFMaterial::GLTF_TEXTURE_INFO_NORMAL]);
+    fetch_texture_for_ui(mMetallicRoughnessTexture, mTextureId[LLGLTFMaterial::GLTF_TEXTURE_INFO_METALLIC_ROUGHNESS]);
+    fetch_texture_for_ui(mEmissiveTexture, mTextureId[LLGLTFMaterial::GLTF_TEXTURE_INFO_EMISSIVE]);
+
+    if ((mBaseColorTexture && (mBaseColorTexture->getRawImageLevel() != 0)) ||
+        (mNormalTexture && (mNormalTexture->getRawImageLevel() != 0)) ||
+        (mMetallicRoughnessTexture && (mMetallicRoughnessTexture->getRawImageLevel() != 0)) ||
+        (mEmissiveTexture && (mEmissiveTexture->getRawImageLevel() != 0)))
+    {
+        return nullptr;
+    }
+
+    // *HACK: Use one of the PBR texture components as the preview texture for now
+    mPreviewTexture = mBaseColorTexture;
+
+    return mPreviewTexture;
+}
diff --git a/indra/newview/llfetchedgltfmaterial.h b/indra/newview/llfetchedgltfmaterial.h
index 2559aa46cc..a9e539633d 100644
--- a/indra/newview/llfetchedgltfmaterial.h
+++ b/indra/newview/llfetchedgltfmaterial.h
@@ -50,6 +50,8 @@ public:
 
     bool isFetching() const { return mFetching; }
 
+    LLPointer<LLViewerFetchedTexture> getUITexture();
+
     void addTextureEntry(LLTextureEntry* te) override;
     void removeTextureEntry(LLTextureEntry* te) override;
     virtual bool replaceLocalTexture(const LLUUID& tracking_id, const LLUUID& old_id, const LLUUID& new_id) override;
@@ -63,6 +65,9 @@ public:
 
     std::set<LLTextureEntry*> mTextureEntires;
 
+    // Texture used for previewing the material in the UI
+    LLPointer<LLViewerFetchedTexture> mPreviewTexture;
+
 protected:
     // Lifetime management
     
diff --git a/indra/newview/llfloatersnapshot.cpp b/indra/newview/llfloatersnapshot.cpp
index 6b9d4580dc..ca2069cbfc 100644
--- a/indra/newview/llfloatersnapshot.cpp
+++ b/indra/newview/llfloatersnapshot.cpp
@@ -461,8 +461,8 @@ void LLFloaterSnapshotBase::ImplBase::onClickAutoSnap(LLUICtrl *ctrl, void* data
 {
 	LLCheckBoxCtrl *check = (LLCheckBoxCtrl *)ctrl;
 	gSavedSettings.setBOOL( "AutoSnapshot", check->get() );
-	
-	LLFloaterSnapshotBase *view = (LLFloaterSnapshotBase *)data;		
+
+	LLFloaterSnapshotBase *view = (LLFloaterSnapshotBase *)data;
 	if (view)
 	{
 		view->impl->checkAutoSnapshot(view->getPreviewView());
@@ -471,6 +471,17 @@ void LLFloaterSnapshotBase::ImplBase::onClickAutoSnap(LLUICtrl *ctrl, void* data
 }
 
 // static
+void LLFloaterSnapshotBase::ImplBase::onClickNoPost(LLUICtrl *ctrl, void* data)
+{
+    BOOL no_post = ((LLCheckBoxCtrl*)ctrl)->get();
+    gSavedSettings.setBOOL("RenderSnapshotNoPost", no_post);
+
+    LLFloaterSnapshotBase* view = (LLFloaterSnapshotBase*)data;
+    view->getPreviewView()->updateSnapshot(TRUE, TRUE);
+    view->impl->updateControls(view);
+}
+
+// static
 void LLFloaterSnapshotBase::ImplBase::onClickFilter(LLUICtrl *ctrl, void* data)
 {
 	LLFloaterSnapshotBase *view = (LLFloaterSnapshotBase *)data;
@@ -997,6 +1008,9 @@ BOOL LLFloaterSnapshot::postBuild()
 	getChild<LLUICtrl>("auto_snapshot_check")->setValue(gSavedSettings.getBOOL("AutoSnapshot"));
 	childSetCommitCallback("auto_snapshot_check", ImplBase::onClickAutoSnap, this);
 
+    getChild<LLUICtrl>("no_post_check")->setValue(gSavedSettings.getBOOL("RenderSnapshotNoPost"));
+    childSetCommitCallback("no_post_check", ImplBase::onClickNoPost, this);
+
     getChild<LLButton>("retract_btn")->setCommitCallback(boost::bind(&LLFloaterSnapshot::onExtendFloater, this));
     getChild<LLButton>("extend_btn")->setCommitCallback(boost::bind(&LLFloaterSnapshot::onExtendFloater, this));
 
diff --git a/indra/newview/llfloatersnapshot.h b/indra/newview/llfloatersnapshot.h
index 7fc62a2746..89cb2bc809 100644
--- a/indra/newview/llfloatersnapshot.h
+++ b/indra/newview/llfloatersnapshot.h
@@ -100,6 +100,7 @@ public:
 
 	static void onClickNewSnapshot(void* data);
 	static void onClickAutoSnap(LLUICtrl *ctrl, void* data);
+	static void onClickNoPost(LLUICtrl *ctrl, void* data);
 	static void onClickFilter(LLUICtrl *ctrl, void* data);
 	static void onClickUICheck(LLUICtrl *ctrl, void* data);
 	static void onClickHUDCheck(LLUICtrl *ctrl, void* data);
diff --git a/indra/newview/llinventorymodel.cpp b/indra/newview/llinventorymodel.cpp
index ad6d960b8c..eebc79c1c6 100644
--- a/indra/newview/llinventorymodel.cpp
+++ b/indra/newview/llinventorymodel.cpp
@@ -1465,6 +1465,10 @@ U32 LLInventoryModel::updateItem(const LLViewerInventoryItem* item, U32 mask)
 		{
 			mask |= LLInventoryObserver::LABEL;
 		}
+        if (old_item->getPermissions() != item->getPermissions())
+        {
+            mask |= LLInventoryObserver::INTERNAL;
+        }
 		old_item->copyViewerItem(item);
 		if (update_parent_on_server)
 		{
diff --git a/indra/newview/llmaterialeditor.cpp b/indra/newview/llmaterialeditor.cpp
index a5437f7a88..292ddb765f 100644
--- a/indra/newview/llmaterialeditor.cpp
+++ b/indra/newview/llmaterialeditor.cpp
@@ -38,6 +38,7 @@
 #include "llgltfmateriallist.h"
 #include "llinventorymodel.h"
 #include "llinventoryobserver.h"
+#include "llinventoryfunctions.h"
 #include "lllocalgltfmaterials.h"
 #include "llnotificationsutil.h"
 #include "lltexturectrl.h"
@@ -435,10 +436,10 @@ BOOL LLMaterialEditor::postBuild()
     if (!gAgent.isGodlike())
     {
         // Only allow fully permissive textures
-        mBaseColorTextureCtrl->setImmediateFilterPermMask(PERM_COPY | PERM_TRANSFER);
-        mMetallicTextureCtrl->setImmediateFilterPermMask(PERM_COPY | PERM_TRANSFER);
-        mEmissiveTextureCtrl->setImmediateFilterPermMask(PERM_COPY | PERM_TRANSFER);
-        mNormalTextureCtrl->setImmediateFilterPermMask(PERM_COPY | PERM_TRANSFER);
+        mBaseColorTextureCtrl->setFilterPermissionMasks(PERM_COPY | PERM_TRANSFER);
+        mMetallicTextureCtrl->setFilterPermissionMasks(PERM_COPY | PERM_TRANSFER);
+        mEmissiveTextureCtrl->setFilterPermissionMasks(PERM_COPY | PERM_TRANSFER);
+        mNormalTextureCtrl->setFilterPermissionMasks(PERM_COPY | PERM_TRANSFER);
     }
 
     // Texture callback
@@ -1495,16 +1496,22 @@ public:
             return;
         }
 
+        // Name may or may not have already been applied
+        const bool changed_name = item->getName() != mNewName;
         // create_inventory_item/copy_inventory_item don't allow presetting some permissions, fix it now
-        item->setPermissions(mPermissions);
-        item->updateServer(FALSE);
-        gInventory.updateItem(item);
-        gInventory.notifyObservers();
-
-        if (item->getName() != mNewName)
+        const bool changed_permissions = item->getPermissions() != mPermissions;
+        const bool changed = changed_name || changed_permissions;
+        LLSD updates;
+        if (changed)
         {
-            LLSD updates;
-            updates["name"] = mNewName;
+            if (changed_name)
+            {
+                updates["name"] = mNewName;
+            }
+            if (changed_permissions)
+            {
+                updates["permissions"] = ll_create_sd_from_permissions(mPermissions);
+            }
             update_inventory_item(inv_item_id, updates, NULL);
         }
 
@@ -1514,10 +1521,16 @@ public:
                 inv_item_id,
                 LLAssetType::AT_MATERIAL,
                 mAssetData,
-                [](LLUUID item_id, LLUUID new_asset_id, LLUUID new_item_id, LLSD response)
+                [changed, updates](LLUUID item_id, LLUUID new_asset_id, LLUUID new_item_id, LLSD response)
                 {
                     // done callback
                     LL_INFOS("Material") << "inventory item uploaded.  item: " << item_id << " new_item_id: " << new_item_id << " response: " << response << LL_ENDL;
+
+                    // *HACK: Sometimes permissions do not stick in the UI. They are correct on the server-side, though.
+                    if (changed)
+                    {
+                        update_inventory_item(new_item_id, updates, NULL);
+                    }
                 },
                 nullptr // failure callback, floater already closed
             );
@@ -2014,8 +2027,49 @@ void LLMaterialEditor::loadLive()
     }
 }
 
+namespace
+{
+    // Which inventory to consult for item permissions
+    enum class ItemSource
+    {
+        // Consult the permissions of the item in the object's inventory. If
+        // the item is not present, then usage of the asset is allowed.
+        OBJECT,
+        // Consult the permissions of the item in the agent's inventory. If
+        // the item is not present, then usage of the asset is not allowed.
+        AGENT
+    };
+
+    class LLAssetIDMatchesWithPerms : public LLInventoryCollectFunctor
+    {
+    public:
+        LLAssetIDMatchesWithPerms(const LLUUID& asset_id, const std::vector<PermissionBit>& ops) : mAssetID(asset_id), mOps(ops) {}
+        virtual ~LLAssetIDMatchesWithPerms() {}
+        bool operator()(LLInventoryCategory* cat, LLInventoryItem* item)
+        {
+            if (!item || item->getAssetUUID() != mAssetID)
+            {
+                return false;
+            }
+            LLPermissions item_permissions = item->getPermissions();
+            for (PermissionBit op : mOps)
+            {
+                if (!gAgent.allowOperation(op, item_permissions, GP_OBJECT_MANIPULATE))
+                {
+                    return false;
+                }
+            }
+            return true;
+        }
+
+    protected:
+        LLUUID mAssetID;
+        std::vector<PermissionBit> mOps;
+    };
+};
+
 // *NOTE: permissions_out includes user preferences for new item creation (LLFloaterPerms)
-bool can_use_objects_material(LLSelectedTEGetMatData& func, const std::vector<PermissionBit>& ops, LLPermissions& permissions_out, LLViewerInventoryItem*& item_out)
+bool can_use_objects_material(LLSelectedTEGetMatData& func, const std::vector<PermissionBit>& ops, const ItemSource item_source, LLPermissions& permissions_out, LLViewerInventoryItem*& item_out)
 {
     if (!LLMaterialEditor::capabilitiesAvailable())
     {
@@ -2028,6 +2082,10 @@ bool can_use_objects_material(LLSelectedTEGetMatData& func, const std::vector<Pe
     llassert(func.mIsOverride);
     LLSelectMgr::getInstance()->getSelection()->applyToTEs(&func, true /*first applicable*/);
 
+    if (item_source == ItemSource::AGENT)
+    {
+        func.mObjectId = LLUUID::null;
+    }
     LLViewerObject* selected_object = func.mObject;
     if (!selected_object)
     {
@@ -2048,19 +2106,47 @@ bool can_use_objects_material(LLSelectedTEGetMatData& func, const std::vector<Pe
         }
     }
 
-    item_out = selected_object->getInventoryItemByAsset(func.mMaterialId);
-
-    LLPermissions item_permissions;
-    if (item_out)
+    // Look for the item to base permissions off of
+    item_out = nullptr;
+    const bool blank_material = func.mMaterialId == LLGLTFMaterialList::BLANK_MATERIAL_ASSET_ID;
+    if (!blank_material)
     {
-        item_permissions.set(item_out->getPermissions());
-        for (PermissionBit op : ops)
+        LLAssetIDMatchesWithPerms item_has_perms(func.mMaterialId, ops);
+        if (item_source == ItemSource::OBJECT)
         {
-            if (!gAgent.allowOperation(op, item_permissions, GP_OBJECT_MANIPULATE))
+            LLViewerInventoryItem* item = selected_object->getInventoryItemByAsset(func.mMaterialId);
+            if (item && !item_has_perms(nullptr, item))
             {
                 return false;
             }
+            item_out = item;
         }
+        else
+        {
+            llassert(item_source == ItemSource::AGENT);
+
+            LLViewerInventoryCategory::cat_array_t cats;
+            LLViewerInventoryItem::item_array_t items;
+            gInventory.collectDescendentsIf(LLUUID::null,
+                                    cats,
+                                    items,
+                                    // *NOTE: PBRPickerAgentListener will need
+                                    // to be changed if checking the trash is
+                                    // disabled
+                                    LLInventoryModel::INCLUDE_TRASH,
+                                    item_has_perms);
+            if (items.empty())
+            {
+                return false;
+            }
+            item_out = items[0];
+        }
+    }
+
+    LLPermissions item_permissions;
+    if (item_out)
+    {
+        item_permissions = item_out->getPermissions();
         // Update flags for new owner
         if (!item_permissions.setOwnerAndGroup(LLUUID::null, gAgent.getID(), LLUUID::null, true))
         {
@@ -2113,13 +2199,24 @@ bool can_use_objects_material(LLSelectedTEGetMatData& func, const std::vector<Pe
     // creation history when there's no material item present. In that case,
     // the agent who saved the material will be considered the creator.
     // -Cosmic,2023-08-07
-    if (item_out)
+    if (item_source == ItemSource::AGENT)
     {
+        llassert(blank_material || item_out); // See comment at ItemSource::AGENT definition
+
         permissions_out.set(item_permissions);
     }
     else
     {
-        permissions_out.set(object_permissions);
+        llassert(item_source == ItemSource::OBJECT);
+
+        if (item_out)
+        {
+            permissions_out.set(item_permissions);
+        }
+        else
+        {
+            permissions_out.set(object_permissions);
+        }
     }
     permissions_out.accumulate(floater_perm);
 
@@ -2131,7 +2228,7 @@ bool LLMaterialEditor::canModifyObjectsMaterial()
     LLSelectedTEGetMatData func(true);
     LLPermissions permissions;
     LLViewerInventoryItem* item_out;
-    return can_use_objects_material(func, std::vector({PERM_MODIFY}), permissions, item_out);
+    return can_use_objects_material(func, std::vector({PERM_MODIFY}), ItemSource::OBJECT, permissions, item_out);
 }
 
 bool LLMaterialEditor::canSaveObjectsMaterial()
@@ -2139,7 +2236,7 @@ bool LLMaterialEditor::canSaveObjectsMaterial()
     LLSelectedTEGetMatData func(true);
     LLPermissions permissions;
     LLViewerInventoryItem* item_out;
-    return can_use_objects_material(func, std::vector({PERM_COPY, PERM_MODIFY}), permissions, item_out);
+    return can_use_objects_material(func, std::vector({PERM_COPY, PERM_MODIFY}), ItemSource::AGENT, permissions, item_out);
 }
 
 bool LLMaterialEditor::canClipboardObjectsMaterial()
@@ -2165,7 +2262,7 @@ bool LLMaterialEditor::canClipboardObjectsMaterial()
     LLSelectedTEGetMatData func(true);
     LLPermissions permissions;
     LLViewerInventoryItem* item_out;
-    return can_use_objects_material(func, std::vector({PERM_COPY, PERM_MODIFY, PERM_TRANSFER}), permissions, item_out);
+    return can_use_objects_material(func, std::vector({PERM_COPY, PERM_MODIFY, PERM_TRANSFER}), ItemSource::OBJECT, permissions, item_out);
 }
 
 void LLMaterialEditor::saveObjectsMaterialAs()
@@ -2173,7 +2270,7 @@ void LLMaterialEditor::saveObjectsMaterialAs()
     LLSelectedTEGetMatData func(true);
     LLPermissions permissions;
     LLViewerInventoryItem* item = nullptr;
-    bool allowed = can_use_objects_material(func, std::vector({PERM_COPY, PERM_MODIFY}), permissions, item);
+    bool allowed = can_use_objects_material(func, std::vector({PERM_COPY, PERM_MODIFY}), ItemSource::AGENT, permissions, item);
     if (!allowed)
     {
         LL_WARNS("MaterialEditor") << "Failed to save GLTF material from object" << LL_ENDL;
@@ -2268,62 +2365,9 @@ void LLMaterialEditor::saveObjectsMaterialAs(const LLGLTFMaterial* render_materi
     }
     else
     {
-        if (item_id.notNull())
-        {
-            // Copy existing item from object inventory, and create new composite asset on top of it
-            LLNotificationsUtil::add("SaveMaterialAs", args, payload, boost::bind(&LLMaterialEditor::onCopyObjectsMaterialAsMsgCallback, _1, _2, permissions, object_id, item_id));
-        }
-        else
-        {
-            LLNotificationsUtil::add("SaveMaterialAs", args, payload, boost::bind(&LLMaterialEditor::onSaveObjectsMaterialAsMsgCallback, _1, _2, permissions));
-        }
-    }
-}
-
-// static
-void LLMaterialEditor::onCopyObjectsMaterialAsMsgCallback(const LLSD& notification, const LLSD& response, const LLPermissions& permissions, const LLUUID& object_id, const LLUUID& item_id)
-{
-    S32 option = LLNotificationsUtil::getSelectedOption(notification, response);
-    if (0 != option)
-    {
-        return;
-    }
-
-    LLSD asset;
-    asset["version"] = LLGLTFMaterial::ASSET_VERSION;
-    asset["type"] = LLGLTFMaterial::ASSET_TYPE;
-    // This is the string serialized from LLGLTFMaterial::asJSON
-    asset["data"] = notification["payload"]["data"];
-
-    std::ostringstream str;
-    LLSDSerialize::serialize(asset, str, LLSDSerialize::LLSD_BINARY);
-
-    LLViewerObject* object = gObjectList.findObject(object_id);
-    if (!object)
-    {
-        return;
+        llassert(object_id.isNull()); // Case for copying item from object inventory is no longer implemented
+        LLNotificationsUtil::add("SaveMaterialAs", args, payload, boost::bind(&LLMaterialEditor::onSaveObjectsMaterialAsMsgCallback, _1, _2, permissions));
     }
-    const LLInventoryItem* item = object->getInventoryItem(item_id);
-    if (!item)
-    {
-        return;
-    }
-
-    std::string new_name = response["message"].asString();
-    LLInventoryObject::correctInventoryName(new_name);
-    if (new_name.empty())
-    {
-        return;
-    }
-
-    const LLUUID destination_id = gInventory.findCategoryUUIDForType(LLFolderType::FT_MATERIAL);
-
-    LLPointer<LLInventoryCallback> cb = new LLObjectsMaterialItemCallback(permissions, str.str(), new_name);
-    // NOTE: This should be an item copy. Saving a material to an inventory should be disabled when the associated material is no-copy.
-    move_or_copy_inventory_from_object(destination_id,
-                                       object_id,
-                                       item_id,
-                                       cb);
 }
 
 // static
diff --git a/indra/newview/llmaterialeditor.h b/indra/newview/llmaterialeditor.h
index 95a4c4572d..4e0350b4cc 100644
--- a/indra/newview/llmaterialeditor.h
+++ b/indra/newview/llmaterialeditor.h
@@ -117,7 +117,6 @@ class LLMaterialEditor : public LLPreview, public LLVOInventoryListener
     static bool canSaveObjectsMaterial();
     static bool canClipboardObjectsMaterial();
     static void saveObjectsMaterialAs();
-    static void onCopyObjectsMaterialAsMsgCallback(const LLSD& notification, const LLSD& response, const LLPermissions& permissions, const LLUUID& object_id, const LLUUID& item_id);
     static void onSaveObjectsMaterialAsMsgCallback(const LLSD& notification, const LLSD& response, const LLPermissions& permissions);
 
     static void onLoadComplete(const LLUUID& asset_uuid, LLAssetType::EType type, void* user_data, S32 status, LLExtStat ext_status);
diff --git a/indra/newview/llpanelface.cpp b/indra/newview/llpanelface.cpp
index 6b6b38502c..366e1f6b47 100644
--- a/indra/newview/llpanelface.cpp
+++ b/indra/newview/llpanelface.cpp
@@ -1094,7 +1094,21 @@ void LLPanelFace::updateUI(bool force_set_values /*false*/)
                 prev_obj_id = objectp->getID();
             }
         }
-
+        else 
+        {
+            if (prev_obj_id != objectp->getID())
+            {
+                if (has_pbr_material && (mComboMatMedia->getCurrentIndex() == MATMEDIA_MATERIAL)) 
+                {
+                    mComboMatMedia->selectNthItem(MATMEDIA_PBR);
+                }
+                else if (!has_pbr_material && (mComboMatMedia->getCurrentIndex() == MATMEDIA_PBR))
+                {
+                    mComboMatMedia->selectNthItem(MATMEDIA_MATERIAL);
+                }
+                prev_obj_id = objectp->getID();
+            }
+        }
         mComboMatMedia->setEnabled(editable);
 
         LLRadioGroup* radio_mat_type = getChild<LLRadioGroup>("radio_material_type");
@@ -1880,15 +1894,53 @@ void LLPanelFace::updateUI(bool force_set_values /*false*/)
 	}
 }
 
+// One-off listener that updates the build floater UI when the agent inventory adds or removes an item
+class PBRPickerAgentListener : public LLInventoryObserver
+{
+protected:
+    bool mChangePending = true;
+public:
+	PBRPickerAgentListener() : LLInventoryObserver()
+    {
+        gInventory.addObserver(this);
+    }
+
+    const bool isListening()
+    {
+        return mChangePending;
+    }
+
+	void changed(U32 mask) override
+    {
+        if (!(mask & (ADD | REMOVE)))
+        {
+            return;
+        }
+
+        if (gFloaterTools)
+        {
+            gFloaterTools->dirty();
+        }
+        gInventory.removeObserver(this);
+        mChangePending = false;
+    }
+
+    ~PBRPickerAgentListener() override
+    {
+        gInventory.removeObserver(this);
+        mChangePending = false;
+    }
+};
+
 // One-off listener that updates the build floater UI when the prim inventory updates
-class PBRPickerItemListener : public LLVOInventoryListener
+class PBRPickerObjectListener : public LLVOInventoryListener
 {
 protected:
     LLViewerObject* mObjectp;
     bool mChangePending = true;
 public:
 
-    PBRPickerItemListener(LLViewerObject* object)
+    PBRPickerObjectListener(LLViewerObject* object)
     : mObjectp(object)
     {
         registerVOInventoryListener(mObjectp, nullptr);
@@ -1912,7 +1964,7 @@ public:
         mChangePending = false;
     }
 
-    ~PBRPickerItemListener()
+    ~PBRPickerObjectListener()
     {
         removeVOInventoryListener();
         mChangePending = false;
@@ -1931,9 +1983,9 @@ void LLPanelFace::updateUIGLTF(LLViewerObject* objectp, bool& has_pbr_material,
 
     // pbr material
     LLTextureCtrl* pbr_ctrl = findChild<LLTextureCtrl>("pbr_control");
+    LLUUID pbr_id;
     if (pbr_ctrl)
     {
-        LLUUID pbr_id;
         LLSelectedTE::getPbrMaterialId(pbr_id, identical_pbr, has_pbr_material, has_faces_without_pbr);
 
         pbr_ctrl->setTentative(identical_pbr ? FALSE : TRUE);
@@ -1942,7 +1994,7 @@ void LLPanelFace::updateUIGLTF(LLViewerObject* objectp, bool& has_pbr_material,
 
         if (objectp->isAttachment())
         {
-            pbr_ctrl->setImmediateFilterPermMask(PERM_COPY | PERM_TRANSFER | PERM_MODIFY);
+            pbr_ctrl->setFilterPermissionMasks(PERM_COPY | PERM_TRANSFER | PERM_MODIFY);
         }
         else
         {
@@ -1956,14 +2008,25 @@ void LLPanelFace::updateUIGLTF(LLViewerObject* objectp, bool& has_pbr_material,
     if (objectp->isInventoryPending())
     {
         // Reuse the same listener when possible
-        if (!mInventoryListener || !mInventoryListener->isListeningFor(objectp))
+        if (!mVOInventoryListener || !mVOInventoryListener->isListeningFor(objectp))
         {
-            mInventoryListener = std::make_unique<PBRPickerItemListener>(objectp);
+            mVOInventoryListener = std::make_unique<PBRPickerObjectListener>(objectp);
         }
     }
     else
     {
-        mInventoryListener = nullptr;
+        mVOInventoryListener = nullptr;
+    }
+    if (!identical_pbr || pbr_id.isNull() || pbr_id == LLGLTFMaterialList::BLANK_MATERIAL_ASSET_ID)
+    {
+        mAgentInventoryListener = nullptr;
+    }
+    else
+    {
+        if (!mAgentInventoryListener || !mAgentInventoryListener->isListening())
+        {
+            mAgentInventoryListener = std::make_unique<PBRPickerAgentListener>();
+        }
     }
 
     const bool show_pbr = mComboMatMedia->getCurrentIndex() == MATMEDIA_PBR && mComboMatMedia->getEnabled();
@@ -4227,6 +4290,7 @@ void LLPanelFace::onCopyTexture()
                 te_data["te"]["bumpmap"] = tep->getBumpmap();
                 te_data["te"]["bumpshiny"] = tep->getBumpShiny();
                 te_data["te"]["bumpfullbright"] = tep->getBumpShinyFullbright();
+                te_data["te"]["texgen"] = tep->getTexGen();
                 te_data["te"]["pbr"] = objectp->getRenderMaterialID(te);
                 if (tep->getGLTFMaterialOverride() != nullptr)
                 {
@@ -4622,6 +4686,11 @@ void LLPanelFace::onPasteTexture(LLViewerObject* objectp, S32 te)
             {
                 objectp->setTEBumpShinyFullbright(te, (U8)te_data["te"]["bumpfullbright"].asInteger());
             }
+            if (te_data["te"].has("texgen"))
+            {
+                objectp->setTETexGen(te, (U8)te_data["te"]["texgen"].asInteger());
+            }
+
             // PBR/GLTF
             if (te_data["te"].has("pbr"))
             {
@@ -4690,8 +4759,6 @@ void LLPanelFace::onPasteTexture(LLViewerObject* objectp, S32 te)
         {
             LLUUID object_id = objectp->getID();
 
-            LLSelectedTEMaterial::setAlphaMaskCutoff(this, (U8)te_data["material"]["SpecRot"].asInteger(), te, object_id);
-
             // Normal
             // Replace placeholders with target's
             if (te_data["material"].has("NormMapNoCopy"))
@@ -4733,11 +4800,12 @@ void LLPanelFace::onPasteTexture(LLViewerObject* objectp, S32 te)
             LLSelectedTEMaterial::setSpecularOffsetX(this, (F32)te_data["material"]["SpecOffX"].asReal(), te, object_id);
             LLSelectedTEMaterial::setSpecularOffsetY(this, (F32)te_data["material"]["SpecOffY"].asReal(), te, object_id);
             LLSelectedTEMaterial::setSpecularRotation(this, (F32)te_data["material"]["SpecRot"].asReal(), te, object_id);
-            LLColor4 spec_color(te_data["material"]["SpecColor"]);
+            LLColor4U spec_color(te_data["material"]["SpecColor"]);
             LLSelectedTEMaterial::setSpecularLightColor(this, spec_color, te);
             LLSelectedTEMaterial::setSpecularLightExponent(this, (U8)te_data["material"]["SpecExp"].asInteger(), te, object_id);
             LLSelectedTEMaterial::setEnvironmentIntensity(this, (U8)te_data["material"]["EnvIntensity"].asInteger(), te, object_id);
-            LLSelectedTEMaterial::setDiffuseAlphaMode(this, (U8)te_data["material"]["SpecRot"].asInteger(), te, object_id);
+            LLSelectedTEMaterial::setDiffuseAlphaMode(this, (U8)te_data["material"]["DiffuseAlphaMode"].asInteger(), te, object_id);
+            LLSelectedTEMaterial::setAlphaMaskCutoff(this, (U8)te_data["material"]["AlphaMaskCutoff"].asInteger(), te, object_id);
             if (te_data.has("te") && te_data["te"].has("shiny"))
             {
                 objectp->setTEShiny(te, (U8)te_data["te"]["shiny"].asInteger());
diff --git a/indra/newview/llpanelface.h b/indra/newview/llpanelface.h
index d36662c11b..5ca6a95699 100644
--- a/indra/newview/llpanelface.h
+++ b/indra/newview/llpanelface.h
@@ -53,7 +53,8 @@ class LLMaterialID;
 class LLMediaCtrl;
 class LLMenuButton;
 
-class PBRPickerItemListener;
+class PBRPickerAgentListener;
+class PBRPickerObjectListener;
 
 // Represents an edit for use in replicating the op across one or more materials in the selection set.
 //
@@ -508,7 +509,8 @@ private:
 
     static Selection sMaterialOverrideSelection;
 
-    std::unique_ptr<PBRPickerItemListener> mInventoryListener;
+    std::unique_ptr<PBRPickerAgentListener> mAgentInventoryListener;
+    std::unique_ptr<PBRPickerObjectListener> mVOInventoryListener;
 
 public:
 	#if defined(DEF_GET_MAT_STATE)
diff --git a/indra/newview/llpanelvolume.cpp b/indra/newview/llpanelvolume.cpp
index d6c36bbfb7..595609b4de 100644
--- a/indra/newview/llpanelvolume.cpp
+++ b/indra/newview/llpanelvolume.cpp
@@ -746,6 +746,14 @@ void LLPanelVolume::sendIsLight()
 	LL_INFOS() << "update light sent" << LL_ENDL;
 }
 
+void notify_cant_select_reflection_probe()
+{
+    if (!gSavedSettings.getBOOL("SelectReflectionProbes"))
+    {
+        LLNotificationsUtil::add("CantSelectReflectionProbe");
+    }
+}
+
 void LLPanelVolume::sendIsReflectionProbe()
 {
     LLViewerObject* objectp = mObject;
@@ -764,6 +772,20 @@ void LLPanelVolume::sendIsReflectionProbe()
     }
     else
     {
+        if (value)
+        {
+            notify_cant_select_reflection_probe();
+        }
+        else if (objectp->flagPhantom())
+        {
+            LLViewerObject* root = objectp->getRootEdit();
+            bool in_linkeset = root != objectp || objectp->numChildren() > 0;
+            if (in_linkeset)
+            {
+                // In linkset with a phantom flag
+                objectp->setFlags(FLAGS_PHANTOM, FALSE);
+            }
+        }
         volobjp->setIsReflectionProbe(value);
     }
 }
@@ -780,6 +802,7 @@ void LLPanelVolume::doSendIsReflectionProbe(const LLSD & notification, const LLS
         }
         LLVOVolume* volobjp = (LLVOVolume*)objectp;
 
+        notify_cant_select_reflection_probe();
         volobjp->setIsReflectionProbe(true);
 
         { // has become a reflection probe, slam to a 10m sphere and pop up a message
@@ -1211,6 +1234,17 @@ void LLPanelVolume::onPasteLight()
         }
         else
         {
+            if (objectp->flagPhantom())
+            {
+                LLViewerObject* root = objectp->getRootEdit();
+                bool in_linkeset = root != objectp || objectp->numChildren() > 0;
+                if (in_linkeset)
+                {
+                    // In linkset with a phantom flag
+                    objectp->setFlags(FLAGS_PHANTOM, FALSE);
+                }
+            }
+
             volobjp->setIsReflectionProbe(false);
         }
     }
diff --git a/indra/newview/llreflectionmap.cpp b/indra/newview/llreflectionmap.cpp
index ec54fa1165..a26445b4bc 100644
--- a/indra/newview/llreflectionmap.cpp
+++ b/indra/newview/llreflectionmap.cpp
@@ -167,7 +167,16 @@ void LLReflectionMap::autoAdjustOrigin()
     {
         mPriority = 1;
         mOrigin.load3(mViewerObject->getPositionAgent().mV);
-        mRadius = mViewerObject->getScale().mV[0]*0.5f;
+
+        if (mViewerObject->getVolume() && ((LLVOVolume*)mViewerObject)->getReflectionProbeIsBox())
+        {
+            LLVector3 s = mViewerObject->getScale().scaledVec(LLVector3(0.5f, 0.5f, 0.5f));
+            mRadius = s.magVec();
+        }
+        else
+        {
+            mRadius = mViewerObject->getScale().mV[0] * 0.5f;
+        }
     }
 }
 
diff --git a/indra/newview/llreflectionmapmanager.cpp b/indra/newview/llreflectionmapmanager.cpp
index 72f7e23b0c..69674417c1 100644
--- a/indra/newview/llreflectionmapmanager.cpp
+++ b/indra/newview/llreflectionmapmanager.cpp
@@ -252,14 +252,12 @@ void LLReflectionMapManager::update()
             continue;
         }
         
-        if (probe != mDefaultProbe && 
+        if (probe != mDefaultProbe &&
             (!probe->isRelevant() || mPaused))
         { // skip irrelevant probes (or all non-default probes if paused)
             continue;
         }
 
-        
-
         LLVector4a d;
 
         if (probe != mDefaultProbe)
@@ -999,10 +997,21 @@ void LLReflectionMapManager::updateUniforms()
         llassert(refmap->mCubeIndex >= 0); // should always be  true, if not, getReflectionMaps is bugged
 
         {
-            if (refmap->mViewerObject)
+            if (refmap->mViewerObject && refmap->mViewerObject->getVolume())
             { // have active manual probes live-track the object they're associated with
-                refmap->mOrigin.load3(refmap->mViewerObject->getPositionAgent().mV);
-                refmap->mRadius = refmap->mViewerObject->getScale().mV[0] * 0.5f;
+                LLVOVolume* vobj = (LLVOVolume*)refmap->mViewerObject;
+
+                refmap->mOrigin.load3(vobj->getPositionAgent().mV);
+
+                if (vobj->getReflectionProbeIsBox())
+                {
+                    LLVector3 s = vobj->getScale().scaledVec(LLVector3(0.5f, 0.5f, 0.5f));
+                    refmap->mRadius = s.magVec();
+                }
+                else
+                {
+                    refmap->mRadius = refmap->mViewerObject->getScale().mV[0] * 0.5f;
+                }
 
             }
             modelview.affineTransform(refmap->mOrigin, oa);
diff --git a/indra/newview/llsettingsvo.cpp b/indra/newview/llsettingsvo.cpp
index 42587658a6..7009fb98ab 100644
--- a/indra/newview/llsettingsvo.cpp
+++ b/indra/newview/llsettingsvo.cpp
@@ -63,6 +63,7 @@
 #include <boost/algorithm/string/replace.hpp>
 #include "llinventoryobserver.h"
 #include "llinventorydefines.h"
+#include "llworld.h"
 
 #include "lltrans.h"
 
@@ -983,12 +984,21 @@ void LLSettingsVOWater::applySpecial(void *ptarget, bool force)
 
     LLEnvironment& env = LLEnvironment::instance();
 
-    auto group = LLGLSLShader::SG_WATER;
+    auto group = LLGLSLShader::SG_ANY;
     LLShaderUniforms* shader = &((LLShaderUniforms*)ptarget)[group];
     
 	{
         F32 water_height = env.getWaterHeight();
 
+        if (LLViewerCamera::instance().cameraUnderWater())
+        { // when the camera is under water, use the water height at the camera position
+            LLViewerRegion* region = LLWorld::instance().getRegionFromPosAgent(LLViewerCamera::instance().getOrigin());
+            if (region)
+            {
+                water_height = region->getWaterHeight();
+            }
+        }
+
         //transform water plane to eye space
         glh::vec3f norm(0.f, 0.f, 1.f);
         glh::vec3f p(0.f, 0.f, water_height);
diff --git a/indra/newview/llsnapshotlivepreview.cpp b/indra/newview/llsnapshotlivepreview.cpp
index b7a1832b17..2ff8f50277 100644
--- a/indra/newview/llsnapshotlivepreview.cpp
+++ b/indra/newview/llsnapshotlivepreview.cpp
@@ -559,6 +559,7 @@ void LLSnapshotLivePreview::generateThumbnailImage(BOOL force_update)
                                          mAllowRenderUI && gSavedSettings.getBOOL("RenderUIInSnapshot"),
                                          gSavedSettings.getBOOL("RenderHUDInSnapshot"),
                                          FALSE,
+                                         gSavedSettings.getBOOL("RenderSnapshotNoPost"),
                                          mSnapshotBufferType) )
         {
             raw = NULL ;
@@ -718,6 +719,7 @@ BOOL LLSnapshotLivePreview::onIdle( void* snapshot_preview )
                 previewp->mAllowRenderUI && gSavedSettings.getBOOL("RenderUIInSnapshot"),
                 gSavedSettings.getBOOL("RenderHUDInSnapshot"),
                 FALSE,
+                gSavedSettings.getBOOL("RenderSnapshotNoPost"),
                 previewp->mSnapshotBufferType,
                 previewp->getMaxImageSize()))
         {
diff --git a/indra/newview/llspatialpartition.cpp b/indra/newview/llspatialpartition.cpp
index e5fdfca7d5..2ecdf75e29 100644
--- a/indra/newview/llspatialpartition.cpp
+++ b/indra/newview/llspatialpartition.cpp
@@ -64,6 +64,9 @@ bool LLSpatialGroup::sNoDelete = false;
 static F32 sLastMaxTexPriority = 1.f;
 static F32 sCurMaxTexPriority = 1.f;
 
+// enable expensive sanity checks around redundant drawable and group insertion to LLCullResult
+#define LL_DEBUG_CULL_RESULT 0
+
 //static counter for frame to switch LOD on
 
 void sg_assert(BOOL expr)
@@ -4050,6 +4053,10 @@ void LLCullResult::pushOcclusionGroup(LLSpatialGroup* group)
 
 void LLCullResult::pushDrawableGroup(LLSpatialGroup* group)
 {
+#if LL_DEBUG_CULL_RESULT
+    // group must NOT be in the drawble groups list already
+    llassert(std::find(&mDrawableGroups[0], mDrawableGroupsEnd, group) == mDrawableGroupsEnd);
+#endif
 	if (mDrawableGroupsSize < mDrawableGroupsAllocated)
 	{
 		mDrawableGroups[mDrawableGroupsSize] = group;
@@ -4064,6 +4071,10 @@ void LLCullResult::pushDrawableGroup(LLSpatialGroup* group)
 
 void LLCullResult::pushDrawable(LLDrawable* drawable)
 {
+#if LL_DEBUG_CULL_RESULT
+    // drawable must NOT be in the visible list already
+    llassert(std::find(&mVisibleList[0], mVisibleListEnd, drawable) == mVisibleListEnd);
+#endif
 	if (mVisibleListSize < mVisibleListAllocated)
 	{
 		mVisibleList[mVisibleListSize] = drawable;
diff --git a/indra/newview/lltexturectrl.cpp b/indra/newview/lltexturectrl.cpp
index 39c8abed11..91e2c054fc 100644
--- a/indra/newview/lltexturectrl.cpp
+++ b/indra/newview/lltexturectrl.cpp
@@ -719,17 +719,27 @@ void LLFloaterTexturePicker::draw()
 
 		// If the floater is focused, don't apply its alpha to the texture (STORM-677).
 		const F32 alpha = getTransparencyType() == TT_ACTIVE ? 1.0f : getCurrentTransparency();
-		if( mTexturep )
+        LLViewerTexture* texture = nullptr;
+        if (mGLTFMaterial)
+        {
+            texture = mGLTFMaterial->getUITexture();
+        }
+        else
+        {
+            texture = mTexturep.get();
+        }
+
+		if( texture )
 		{
-			if( mTexturep->getComponents() == 4 )
+			if( texture->getComponents() == 4 )
 			{
 				gl_rect_2d_checkerboard( interior, alpha );
 			}
 
-			gl_draw_scaled_image( interior.mLeft, interior.mBottom, interior.getWidth(), interior.getHeight(), mTexturep, UI_VERTEX_COLOR % alpha );
+			gl_draw_scaled_image( interior.mLeft, interior.mBottom, interior.getWidth(), interior.getHeight(), texture, UI_VERTEX_COLOR % alpha );
 
 			// Pump the priority
-			mTexturep->addTextureStats( (F32)(interior.getWidth() * interior.getHeight()) );
+			texture->addTextureStats( (F32)(interior.getWidth() * interior.getHeight()) );
 		}
 		else if (!mFallbackImage.isNull())
 		{
@@ -1704,6 +1714,12 @@ void LLTextureCtrl::setImmediateFilterPermMask(PermissionMask mask)
     }
 }
 
+void LLTextureCtrl::setFilterPermissionMasks(PermissionMask mask) 
+{
+    setImmediateFilterPermMask(mask);
+    setDnDFilterPermMask(mask);
+}
+
 void LLTextureCtrl::setVisible( BOOL visible ) 
 {
 	if( !visible )
@@ -2139,11 +2155,21 @@ void LLTextureCtrl::draw()
 
 		if (texture.isNull())
 		{
-			texture = LLViewerTextureManager::getFetchedTexture(mImageAssetID, FTT_DEFAULT, MIPMAP_YES, LLGLTexture::BOOST_NONE, LLViewerTexture::LOD_TEXTURE);
+            if (mInventoryPickType == LLTextureCtrl::PICK_MATERIAL)
+            {
+                LLPointer<LLFetchedGLTFMaterial> material = gGLTFMaterialList.getMaterial(mImageAssetID);
+                if (material)
+                {
+                    texture = material->getUITexture();
+                }
+            }
+            else
+            {
+                texture = LLViewerTextureManager::getFetchedTexture(mImageAssetID, FTT_DEFAULT, TRUE, LLGLTexture::BOOST_NONE, LLViewerTexture::LOD_TEXTURE);
+                texture->setBoostLevel(LLGLTexture::BOOST_PREVIEW);
+                texture->forceToSaveRawImage(0);
+            }
 		}
-		
-		texture->setBoostLevel(LLGLTexture::BOOST_PREVIEW);
-		texture->forceToSaveRawImage(0) ;
 
 		mTexturep = texture;
 	}
diff --git a/indra/newview/lltexturectrl.h b/indra/newview/lltexturectrl.h
index 51b9e0f3e1..810e1d2395 100644
--- a/indra/newview/lltexturectrl.h
+++ b/indra/newview/lltexturectrl.h
@@ -203,6 +203,7 @@ public:
 	void			setDnDFilterPermMask(PermissionMask mask)
 						{ mDnDFilterPermMask = mask; }
 	PermissionMask	getImmediateFilterPermMask() { return mImmediateFilterPermMask; }
+    void setFilterPermissionMasks(PermissionMask mask);
 
 	void			closeDependentFloater();
 
diff --git a/indra/newview/llviewercamera.cpp b/indra/newview/llviewercamera.cpp
index b37f08283d..4134e35f87 100644
--- a/indra/newview/llviewercamera.cpp
+++ b/indra/newview/llviewercamera.cpp
@@ -50,6 +50,7 @@
 #include "llquaternion.h"
 #include "llwindow.h"			// getPixelAspectRatio()
 #include "lltracerecording.h"
+#include "llenvironment.h"
 
 // System includes
 #include <iomanip> // for setprecision
@@ -96,35 +97,41 @@ LLViewerCamera::LLViewerCamera() : LLCamera()
 	gSavedSettings.getControl("CameraAngle")->getCommitSignal()->connect(boost::bind(&LLViewerCamera::updateCameraAngle, this, _2));
 }
 
-void LLViewerCamera::updateCameraLocation(const LLVector3 &center,
-											const LLVector3 &up_direction,
-											const LLVector3 &point_of_interest)
+void LLViewerCamera::updateCameraLocation(const LLVector3 &center, const LLVector3 &up_direction, const LLVector3 &point_of_interest)
 {
-	// do not update if avatar didn't move
-	if (!LLViewerJoystick::getInstance()->getCameraNeedsUpdate())
-	{
-		return;
-	}
-
-	LLVector3 last_position;
-	LLVector3 last_axis;
-	last_position = getOrigin();
-	last_axis = getAtAxis();
-
-	mLastPointOfInterest = point_of_interest;
-
-	LLViewerRegion * regp = gAgent.getRegion();
-	F32 water_height = (NULL != regp) ? regp->getWaterHeight() : 0.f;
-
-	LLVector3 origin = center;
-	if (origin.mV[2] > water_height)
-	{
-		origin.mV[2] = llmax(origin.mV[2], water_height+0.20f);
-	}
-	else
-	{
-		origin.mV[2] = llmin(origin.mV[2], water_height-0.20f);
-	}
+    // do not update if avatar didn't move
+    if (!LLViewerJoystick::getInstance()->getCameraNeedsUpdate())
+    {
+        return;
+    }
+
+    LLVector3 last_position;
+    LLVector3 last_axis;
+    last_position = getOrigin();
+    last_axis     = getAtAxis();
+
+    mLastPointOfInterest = point_of_interest;
+
+    LLViewerRegion* regp = LLWorld::instance().getRegionFromPosAgent(getOrigin());
+    if (!regp)
+    {
+        regp = gAgent.getRegion();
+    }
+
+    F32 water_height = (NULL != regp) ? regp->getWaterHeight() : 0.f;
+
+    LLVector3 origin = center;
+
+    {
+        if (origin.mV[2] > water_height)
+        {
+            origin.mV[2] = llmax(origin.mV[2], water_height + 0.20f);
+        }
+        else
+        {
+            origin.mV[2] = llmin(origin.mV[2], water_height - 0.20f);
+        }
+    }
 
 	setOriginAndLookAt(origin, up_direction, point_of_interest);
 
@@ -755,11 +762,19 @@ LLVector3 LLViewerCamera::roundToPixel(const LLVector3 &pos_agent)
 
 BOOL LLViewerCamera::cameraUnderWater() const
 {
-	if(!gAgent.getRegion())
+    LLViewerRegion* regionp = LLWorld::instance().getRegionFromPosAgent(getOrigin());
+
+    if (!regionp)
+    {
+        regionp = gAgent.getRegion();
+    }
+
+	if(!regionp)
 	{
 		return FALSE ;
 	}
-	return getOrigin().mV[VZ] < gAgent.getRegion()->getWaterHeight();
+
+	return getOrigin().mV[VZ] < regionp->getWaterHeight();
 }
 
 BOOL LLViewerCamera::areVertsVisible(LLViewerObject* volumep, BOOL all_verts)
diff --git a/indra/newview/llviewerdisplay.cpp b/indra/newview/llviewerdisplay.cpp
index 05a71d1a60..dc05914662 100644
--- a/indra/newview/llviewerdisplay.cpp
+++ b/indra/newview/llviewerdisplay.cpp
@@ -100,6 +100,7 @@ BOOL gResizeShadowTexture = FALSE;
 BOOL gWindowResized = FALSE;
 BOOL gSnapshot = FALSE;
 BOOL gCubeSnapshot = FALSE;
+BOOL gSnapshotNoPost = FALSE;
 BOOL gShaderProfileFrame = FALSE;
 
 // This is how long the sim will try to teleport you before giving up.
@@ -410,13 +411,13 @@ void display(BOOL rebuild, F32 zoom_factor, int subfield, BOOL for_snapshot)
 		gResizeShadowTexture = FALSE;
 	}
 
+	gSnapshot = for_snapshot;
+
 	if (LLPipeline::sRenderDeferred)
 	{ //hack to make sky show up in deferred snapshots
 		for_snapshot = FALSE;
 	}
 
-	gSnapshot = for_snapshot;
-
 	LLGLSDefault gls_default;
 	LLGLDepthTest gls_depth(GL_TRUE, GL_TRUE, GL_LEQUAL);
 	
diff --git a/indra/newview/llviewerinventory.cpp b/indra/newview/llviewerinventory.cpp
index 3e3a574988..0a0a19d095 100644
--- a/indra/newview/llviewerinventory.cpp
+++ b/indra/newview/llviewerinventory.cpp
@@ -1693,67 +1693,6 @@ void copy_inventory_from_notecard(const LLUUID& destination_id,
     }
 }
 
-void move_or_copy_inventory_from_object(const LLUUID& destination_id,
-                                        const LLUUID& object_id,
-                                        const LLUUID& item_id,
-                                        LLPointer<LLInventoryCallback> cb)
-{
-    LLViewerObject* object = gObjectList.findObject(object_id);
-    if (!object)
-    {
-        return;
-    }
-    const LLInventoryItem* item = object->getInventoryItem(item_id);
-    if (!item)
-    {
-        return;
-    }
-
-    class LLItemAddedObserver : public LLInventoryObserver
-    {
-    public:
-        LLItemAddedObserver(const LLUUID& copied_asset_id, LLPointer<LLInventoryCallback> cb)
-        : LLInventoryObserver(),
-          mAssetId(copied_asset_id),
-          mCallback(cb)
-        {
-        }
-
-        void changed(U32 mask) override
-        {
-            if((mask & (LLInventoryObserver::ADD)) == 0)
-            {
-                return;
-            }
-            for (const LLUUID& changed_id : gInventory.getChangedIDs())
-            {
-                LLViewerInventoryItem* changed_item = gInventory.getItem(changed_id);
-                if (changed_item->getAssetUUID() == mAssetId)
-                {
-                    changeComplete(changed_item->getUUID());
-                    return;
-                }
-            }
-        }
-
-    private:
-        void changeComplete(const LLUUID& item_id)
-        {
-			mCallback->fire(item_id);
-            gInventory.removeObserver(this);
-            delete this;
-        }
-
-        LLUUID mAssetId;
-        LLPointer<LLInventoryCallback> mCallback;
-    };
-
-	const LLUUID& asset_id = item->getAssetUUID();
-    LLItemAddedObserver* observer = new LLItemAddedObserver(asset_id, cb);
-    gInventory.addObserver(observer);
-    object->moveInventory(destination_id, item_id);
-}
-
 void create_new_item(const std::string& name,
 				   const LLUUID& parent_id,
 				   LLAssetType::EType asset_type,
diff --git a/indra/newview/llviewerinventory.h b/indra/newview/llviewerinventory.h
index bce8da0a69..e043285ffb 100644
--- a/indra/newview/llviewerinventory.h
+++ b/indra/newview/llviewerinventory.h
@@ -463,11 +463,6 @@ void copy_inventory_from_notecard(const LLUUID& destination_id,
 								  const LLInventoryItem *src,
 								  U32 callback_id = 0);
 
-void move_or_copy_inventory_from_object(const LLUUID& destination_id,
-                                        const LLUUID& object_id,
-                                        const LLUUID& item_id,
-                                        LLPointer<LLInventoryCallback> cb);
-
 void menu_create_inventory_item(LLInventoryPanel* root,
 								LLFolderBridge* bridge,
 								const LLSD& userdata,
diff --git a/indra/newview/llviewermenu.cpp b/indra/newview/llviewermenu.cpp
index 90066b205e..c6d6b625a3 100644
--- a/indra/newview/llviewermenu.cpp
+++ b/indra/newview/llviewermenu.cpp
@@ -788,6 +788,10 @@ U32 render_type_from_string(std::string render_type)
 	{
 		return LLPipeline::RENDER_TYPE_BUMP;
 	}
+    else if ("pbr" == render_type) 
+    {
+        return LLPipeline::RENDER_TYPE_GLTF_PBR;
+    }
 	else
 	{
 		return 0;
diff --git a/indra/newview/llviewermenufile.cpp b/indra/newview/llviewermenufile.cpp
index e2791ba128..5461e0f362 100644
--- a/indra/newview/llviewermenufile.cpp
+++ b/indra/newview/llviewermenufile.cpp
@@ -863,8 +863,9 @@ class LLFileTakeSnapshotToDisk : public view_listener_t
 		S32 width = gViewerWindow->getWindowWidthRaw();
 		S32 height = gViewerWindow->getWindowHeightRaw();
 
-		bool render_ui = gSavedSettings.getBOOL("RenderUIInSnapshot");
-		bool render_hud = gSavedSettings.getBOOL("RenderHUDInSnapshot");
+		BOOL render_ui = gSavedSettings.getBOOL("RenderUIInSnapshot");
+		BOOL render_hud = gSavedSettings.getBOOL("RenderHUDInSnapshot");
+		BOOL render_no_post = gSavedSettings.getBOOL("RenderSnapshotNoPost");
 
 		BOOL high_res = gSavedSettings.getBOOL("HighResSnapshot");
 		if (high_res)
@@ -884,6 +885,7 @@ class LLFileTakeSnapshotToDisk : public view_listener_t
 									   render_ui,
 									   render_hud,
 									   FALSE,
+									   render_no_post,
 									   LLSnapshotModel::SNAPSHOT_TYPE_COLOR,
 									   high_res ? S32_MAX : MAX_SNAPSHOT_IMAGE_SIZE)) //per side
 		{
diff --git a/indra/newview/llviewershadermgr.cpp b/indra/newview/llviewershadermgr.cpp
index cdf5e2875f..3225299493 100644
--- a/indra/newview/llviewershadermgr.cpp
+++ b/indra/newview/llviewershadermgr.cpp
@@ -99,7 +99,6 @@ LLGLSLShader        gSkinnedObjectFullbrightAlphaMaskProgram;
 LLGLSLShader		gObjectBumpProgram;
 LLGLSLShader        gSkinnedObjectBumpProgram;
 LLGLSLShader		gObjectAlphaMaskNoColorProgram;
-LLGLSLShader		gObjectAlphaMaskNoColorWaterProgram;
 
 //environment shaders
 LLGLSLShader		gWaterProgram;
@@ -138,7 +137,6 @@ LLGLSLShader			gDeferredSkinnedDiffuseProgram;
 LLGLSLShader			gDeferredSkinnedBumpProgram;
 LLGLSLShader			gDeferredBumpProgram;
 LLGLSLShader			gDeferredTerrainProgram;
-LLGLSLShader            gDeferredTerrainWaterProgram;
 LLGLSLShader			gDeferredTreeProgram;
 LLGLSLShader			gDeferredTreeShadowProgram;
 LLGLSLShader            gDeferredSkinnedTreeShadowProgram;
@@ -149,9 +147,10 @@ LLGLSLShader			gDeferredMultiLightProgram[16];
 LLGLSLShader			gDeferredSpotLightProgram;
 LLGLSLShader			gDeferredMultiSpotLightProgram;
 LLGLSLShader			gDeferredSunProgram;
+LLGLSLShader            gHazeProgram;
+LLGLSLShader            gHazeWaterProgram;
 LLGLSLShader			gDeferredBlurLightProgram;
 LLGLSLShader			gDeferredSoftenProgram;
-LLGLSLShader			gDeferredSoftenWaterProgram;
 LLGLSLShader			gDeferredShadowProgram;
 LLGLSLShader            gDeferredSkinnedShadowProgram;
 LLGLSLShader			gDeferredShadowCubeProgram;
@@ -171,8 +170,6 @@ LLGLSLShader			gHUDAlphaProgram;
 LLGLSLShader            gDeferredSkinnedAlphaProgram;
 LLGLSLShader			gDeferredAlphaImpostorProgram;
 LLGLSLShader            gDeferredSkinnedAlphaImpostorProgram;
-LLGLSLShader			gDeferredAlphaWaterProgram;
-LLGLSLShader            gDeferredSkinnedAlphaWaterProgram;
 LLGLSLShader			gDeferredAvatarEyesProgram;
 LLGLSLShader			gDeferredFullbrightProgram;
 LLGLSLShader            gHUDFullbrightProgram;
@@ -180,12 +177,6 @@ LLGLSLShader			gDeferredFullbrightAlphaMaskProgram;
 LLGLSLShader			gHUDFullbrightAlphaMaskProgram;
 LLGLSLShader			gDeferredFullbrightAlphaMaskAlphaProgram;
 LLGLSLShader			gHUDFullbrightAlphaMaskAlphaProgram;
-LLGLSLShader			gDeferredFullbrightWaterProgram;
-LLGLSLShader            gDeferredSkinnedFullbrightWaterProgram;
-LLGLSLShader			gDeferredFullbrightWaterAlphaProgram;
-LLGLSLShader			gDeferredSkinnedFullbrightWaterAlphaProgram;
-LLGLSLShader			gDeferredFullbrightAlphaMaskWaterProgram;
-LLGLSLShader            gDeferredSkinnedFullbrightAlphaMaskWaterProgram;
 LLGLSLShader			gDeferredEmissiveProgram;
 LLGLSLShader            gDeferredSkinnedEmissiveProgram;
 LLGLSLShader			gDeferredPostProgram;
@@ -215,7 +206,6 @@ LLGLSLShader            gDeferredBufferVisualProgram;
 
 // Deferred materials shaders
 LLGLSLShader			gDeferredMaterialProgram[LLMaterial::SHADER_COUNT*2];
-LLGLSLShader			gDeferredMaterialWaterProgram[LLMaterial::SHADER_COUNT*2];
 LLGLSLShader			gHUDPBROpaqueProgram;
 LLGLSLShader            gPBRGlowProgram;
 LLGLSLShader            gPBRGlowSkinnedProgram;
@@ -224,8 +214,6 @@ LLGLSLShader            gDeferredSkinnedPBROpaqueProgram;
 LLGLSLShader            gHUDPBRAlphaProgram;
 LLGLSLShader            gDeferredPBRAlphaProgram;
 LLGLSLShader            gDeferredSkinnedPBRAlphaProgram;
-LLGLSLShader            gDeferredPBRAlphaWaterProgram;
-LLGLSLShader            gDeferredSkinnedPBRAlphaWaterProgram;
 
 //helper for making a rigged variant of a given shader
 bool make_rigged_variant(LLGLSLShader& shader, LLGLSLShader& riggedShader)
@@ -258,30 +246,22 @@ LLViewerShaderMgr::LLViewerShaderMgr() :
 	mShaderList.push_back(&gObjectFullbrightAlphaMaskProgram);
     mShaderList.push_back(&gSkinnedObjectFullbrightAlphaMaskProgram);
 	mShaderList.push_back(&gObjectAlphaMaskNoColorProgram);
-	mShaderList.push_back(&gObjectAlphaMaskNoColorWaterProgram);
 	mShaderList.push_back(&gUnderWaterProgram);
 	mShaderList.push_back(&gDeferredSunProgram);
+    mShaderList.push_back(&gHazeProgram);
+    mShaderList.push_back(&gHazeWaterProgram);
 	mShaderList.push_back(&gDeferredSoftenProgram);
-	mShaderList.push_back(&gDeferredSoftenWaterProgram);
 	mShaderList.push_back(&gDeferredAlphaProgram);
     mShaderList.push_back(&gHUDAlphaProgram);
     mShaderList.push_back(&gDeferredSkinnedAlphaProgram);
 	mShaderList.push_back(&gDeferredAlphaImpostorProgram);
     mShaderList.push_back(&gDeferredSkinnedAlphaImpostorProgram);
-	mShaderList.push_back(&gDeferredAlphaWaterProgram);
-    mShaderList.push_back(&gDeferredSkinnedAlphaWaterProgram);
 	mShaderList.push_back(&gDeferredFullbrightProgram);
     mShaderList.push_back(&gHUDFullbrightProgram);
 	mShaderList.push_back(&gDeferredFullbrightAlphaMaskProgram);
     mShaderList.push_back(&gHUDFullbrightAlphaMaskProgram);
     mShaderList.push_back(&gDeferredFullbrightAlphaMaskAlphaProgram);
     mShaderList.push_back(&gHUDFullbrightAlphaMaskAlphaProgram);
-	mShaderList.push_back(&gDeferredFullbrightWaterProgram);
-    mShaderList.push_back(&gDeferredSkinnedFullbrightWaterProgram);
-    mShaderList.push_back(&gDeferredFullbrightWaterAlphaProgram);
-    mShaderList.push_back(&gDeferredSkinnedFullbrightWaterAlphaProgram);
-	mShaderList.push_back(&gDeferredFullbrightAlphaMaskWaterProgram);
-    mShaderList.push_back(&gDeferredSkinnedFullbrightAlphaMaskWaterProgram);
 	mShaderList.push_back(&gDeferredFullbrightShinyProgram);
     mShaderList.push_back(&gHUDFullbrightShinyProgram);
     mShaderList.push_back(&gDeferredSkinnedFullbrightShinyProgram);
@@ -291,17 +271,14 @@ LLViewerShaderMgr::LLViewerShaderMgr() :
 	mShaderList.push_back(&gDeferredEmissiveProgram);
     mShaderList.push_back(&gDeferredSkinnedEmissiveProgram);
 	mShaderList.push_back(&gDeferredAvatarEyesProgram);
-    mShaderList.push_back(&gDeferredTerrainWaterProgram);
-	mShaderList.push_back(&gDeferredAvatarAlphaProgram);
+    mShaderList.push_back(&gDeferredAvatarAlphaProgram);
 	mShaderList.push_back(&gDeferredWLSkyProgram);
 	mShaderList.push_back(&gDeferredWLCloudProgram);
     mShaderList.push_back(&gDeferredWLMoonProgram);
     mShaderList.push_back(&gDeferredWLSunProgram);
     mShaderList.push_back(&gDeferredPBRAlphaProgram);
-    mShaderList.push_back(&gDeferredPBRAlphaWaterProgram);
     mShaderList.push_back(&gHUDPBRAlphaProgram);
     mShaderList.push_back(&gDeferredSkinnedPBRAlphaProgram);
-    mShaderList.push_back(&gDeferredSkinnedPBRAlphaWaterProgram);
     mShaderList.push_back(&gDeferredPostGammaCorrectProgram); // for gamma
     mShaderList.push_back(&gNoPostGammaCorrectProgram);
     mShaderList.push_back(&gLegacyPostGammaCorrectProgram);
@@ -594,7 +571,6 @@ std::string LLViewerShaderMgr::loadBasicShaders()
 
 	vector< pair<string, S32> > shaders;
 	shaders.push_back( make_pair( "windlight/atmosphericsVarsV.glsl",       mShaderLevel[SHADER_WINDLIGHT] ) );
-	shaders.push_back( make_pair( "windlight/atmosphericsVarsWaterV.glsl",  mShaderLevel[SHADER_WINDLIGHT] ) );
 	shaders.push_back( make_pair( "windlight/atmosphericsHelpersV.glsl",    mShaderLevel[SHADER_WINDLIGHT] ) );
 	shaders.push_back( make_pair( "lighting/lightFuncV.glsl",               mShaderLevel[SHADER_LIGHTING] ) );
 	shaders.push_back( make_pair( "lighting/sumLightsV.glsl",               sum_lights_class ) );
@@ -674,7 +650,6 @@ std::string LLViewerShaderMgr::loadBasicShaders()
 
 	std::vector<S32> index_channels;    
 	index_channels.push_back(-1);    shaders.push_back( make_pair( "windlight/atmosphericsVarsF.glsl",      mShaderLevel[SHADER_WINDLIGHT] ) );
-	index_channels.push_back(-1);    shaders.push_back( make_pair( "windlight/atmosphericsVarsWaterF.glsl",     mShaderLevel[SHADER_WINDLIGHT] ) );
 	index_channels.push_back(-1);    shaders.push_back( make_pair( "windlight/atmosphericsHelpersF.glsl",       mShaderLevel[SHADER_WINDLIGHT] ) );
 	index_channels.push_back(-1);    shaders.push_back( make_pair( "windlight/gammaF.glsl",                 mShaderLevel[SHADER_WINDLIGHT]) );
     index_channels.push_back(-1);    shaders.push_back( make_pair( "windlight/atmosphericsFuncs.glsl",       mShaderLevel[SHADER_WINDLIGHT] ) );
@@ -689,12 +664,8 @@ std::string LLViewerShaderMgr::loadBasicShaders()
     index_channels.push_back(-1);    shaders.push_back( make_pair( "deferred/screenSpaceReflUtil.glsl",             ssr ? 3 : 1) );
 	index_channels.push_back(-1);    shaders.push_back( make_pair( "lighting/lightNonIndexedF.glsl",                    mShaderLevel[SHADER_LIGHTING] ) );
 	index_channels.push_back(-1);    shaders.push_back( make_pair( "lighting/lightAlphaMaskNonIndexedF.glsl",                   mShaderLevel[SHADER_LIGHTING] ) );
-	index_channels.push_back(-1);    shaders.push_back( make_pair( "lighting/lightWaterNonIndexedF.glsl",               mShaderLevel[SHADER_LIGHTING] ) );
-	index_channels.push_back(-1);    shaders.push_back( make_pair( "lighting/lightWaterAlphaMaskNonIndexedF.glsl",              mShaderLevel[SHADER_LIGHTING] ) );
 	index_channels.push_back(ch);    shaders.push_back( make_pair( "lighting/lightF.glsl",                  mShaderLevel[SHADER_LIGHTING] ) );
 	index_channels.push_back(ch);    shaders.push_back( make_pair( "lighting/lightAlphaMaskF.glsl",                 mShaderLevel[SHADER_LIGHTING] ) );
-	index_channels.push_back(ch);    shaders.push_back( make_pair( "lighting/lightWaterF.glsl",             mShaderLevel[SHADER_LIGHTING] ) );
-	index_channels.push_back(ch);    shaders.push_back( make_pair( "lighting/lightWaterAlphaMaskF.glsl",    mShaderLevel[SHADER_LIGHTING] ) );
 	
 	for (U32 i = 0; i < shaders.size(); i++)
 	{
@@ -732,7 +703,6 @@ BOOL LLViewerShaderMgr::loadShadersWater()
 		gWaterProgram.mName = "Water Shader";
 		gWaterProgram.mFeatures.calculatesAtmospherics = true;
         gWaterProgram.mFeatures.hasAtmospherics = true;
-        gWaterProgram.mFeatures.hasWaterFog = true;
 		gWaterProgram.mFeatures.hasGamma = true;
 		gWaterProgram.mFeatures.hasSrgb = true;
         gWaterProgram.mFeatures.hasReflectionProbes = true;
@@ -763,7 +733,6 @@ BOOL LLViewerShaderMgr::loadShadersWater()
 		gWaterEdgeProgram.mName = "Water Edge Shader";
 		gWaterEdgeProgram.mFeatures.calculatesAtmospherics = true;
         gWaterEdgeProgram.mFeatures.hasAtmospherics = true;
-        gWaterEdgeProgram.mFeatures.hasWaterFog = true;
 		gWaterEdgeProgram.mFeatures.hasGamma = true;
 		gWaterEdgeProgram.mFeatures.hasSrgb = true;
         gWaterEdgeProgram.mFeatures.hasReflectionProbes = true;
@@ -793,7 +762,7 @@ BOOL LLViewerShaderMgr::loadShadersWater()
 		//load under water vertex shader
 		gUnderWaterProgram.mName = "Underwater Shader";
 		gUnderWaterProgram.mFeatures.calculatesAtmospherics = true;
-		gUnderWaterProgram.mFeatures.hasWaterFog = true;
+		gUnderWaterProgram.mFeatures.hasAtmospherics = true;
 		gUnderWaterProgram.mShaderFiles.clear();
 		gUnderWaterProgram.mShaderFiles.push_back(make_pair("environment/waterV.glsl", GL_VERTEX_SHADER));
 		gUnderWaterProgram.mShaderFiles.push_back(make_pair("environment/underWaterF.glsl", GL_FRAGMENT_SHADER));
@@ -908,7 +877,6 @@ BOOL LLViewerShaderMgr::loadShadersDeferred()
         gDeferredSkinnedBumpProgram.unload();
 		gDeferredImpostorProgram.unload();
 		gDeferredTerrainProgram.unload();
-		gDeferredTerrainWaterProgram.unload();
 		gDeferredLightProgram.unload();
 		for (U32 i = 0; i < LL_DEFERRED_MULTI_LIGHT_COUNT; ++i)
 		{
@@ -919,7 +887,6 @@ BOOL LLViewerShaderMgr::loadShadersDeferred()
 		gDeferredSunProgram.unload();
 		gDeferredBlurLightProgram.unload();
 		gDeferredSoftenProgram.unload();
-		gDeferredSoftenWaterProgram.unload();
 		gDeferredShadowProgram.unload();
         gDeferredSkinnedShadowProgram.unload();
 		gDeferredShadowCubeProgram.unload();
@@ -937,20 +904,12 @@ BOOL LLViewerShaderMgr::loadShadersDeferred()
 		gDeferredAlphaProgram.unload();
         gHUDAlphaProgram.unload();
         gDeferredSkinnedAlphaProgram.unload();
-		gDeferredAlphaWaterProgram.unload();
-        gDeferredSkinnedAlphaWaterProgram.unload();
 		gDeferredFullbrightProgram.unload();
         gHUDFullbrightProgram.unload();
 		gDeferredFullbrightAlphaMaskProgram.unload();
         gHUDFullbrightAlphaMaskProgram.unload();
         gDeferredFullbrightAlphaMaskAlphaProgram.unload();
         gHUDFullbrightAlphaMaskAlphaProgram.unload();
-		gDeferredFullbrightWaterProgram.unload();
-        gDeferredSkinnedFullbrightWaterProgram.unload();
-        gDeferredFullbrightWaterAlphaProgram.unload();
-        gDeferredSkinnedFullbrightWaterAlphaProgram.unload();
-		gDeferredFullbrightAlphaMaskWaterProgram.unload();
-        gDeferredSkinnedFullbrightAlphaMaskWaterProgram.unload();
 		gDeferredEmissiveProgram.unload();
         gDeferredSkinnedEmissiveProgram.unload();
 		gDeferredAvatarEyesProgram.unload();
@@ -984,7 +943,6 @@ BOOL LLViewerShaderMgr::loadShadersDeferred()
 		for (U32 i = 0; i < LLMaterial::SHADER_COUNT*2; ++i)
 		{
 			gDeferredMaterialProgram[i].unload();
-			gDeferredMaterialWaterProgram[i].unload();
 		}
 
         gHUDPBROpaqueProgram.unload();
@@ -993,8 +951,6 @@ BOOL LLViewerShaderMgr::loadShadersDeferred()
         gDeferredSkinnedPBROpaqueProgram.unload();
         gDeferredPBRAlphaProgram.unload();
         gDeferredSkinnedPBRAlphaProgram.unload();
-        gDeferredPBRAlphaWaterProgram.unload();
-        gDeferredSkinnedPBRAlphaWaterProgram.unload();
 
 		return TRUE;
 	}
@@ -1084,15 +1040,6 @@ BOOL LLViewerShaderMgr::loadShadersDeferred()
 	gDeferredMaterialProgram[9+LLMaterial::SHADER_COUNT].mFeatures.hasLighting = false;
 	gDeferredMaterialProgram[13+LLMaterial::SHADER_COUNT].mFeatures.hasLighting = false;
 
-	gDeferredMaterialWaterProgram[1].mFeatures.hasLighting = false;
-	gDeferredMaterialWaterProgram[5].mFeatures.hasLighting = false;
-	gDeferredMaterialWaterProgram[9].mFeatures.hasLighting = false;
-	gDeferredMaterialWaterProgram[13].mFeatures.hasLighting = false;
-	gDeferredMaterialWaterProgram[1+LLMaterial::SHADER_COUNT].mFeatures.hasLighting = false;
-	gDeferredMaterialWaterProgram[5+LLMaterial::SHADER_COUNT].mFeatures.hasLighting = false;
-	gDeferredMaterialWaterProgram[9+LLMaterial::SHADER_COUNT].mFeatures.hasLighting = false;
-	gDeferredMaterialWaterProgram[13+LLMaterial::SHADER_COUNT].mFeatures.hasLighting = false;
-
 	for (U32 i = 0; i < LLMaterial::SHADER_COUNT*2; ++i)
 	{
 		if (success)
@@ -1158,77 +1105,6 @@ BOOL LLViewerShaderMgr::loadShadersDeferred()
             success = gDeferredMaterialProgram[i].createShader(NULL, NULL);
             llassert(success);
 		}
-
-		if (success)
-		{
-            mShaderList.push_back(&gDeferredMaterialWaterProgram[i]);
-
-            gDeferredMaterialWaterProgram[i].mName = llformat("Deferred Underwater Material Shader %d", i);
-
-            U32 alpha_mode = i & 0x3;
-
-            gDeferredMaterialWaterProgram[i].mShaderFiles.clear();
-            gDeferredMaterialWaterProgram[i].mShaderFiles.push_back(make_pair("deferred/materialV.glsl", GL_VERTEX_SHADER));
-            gDeferredMaterialWaterProgram[i].mShaderFiles.push_back(make_pair("deferred/materialF.glsl", GL_FRAGMENT_SHADER));
-            gDeferredMaterialWaterProgram[i].mShaderLevel = mShaderLevel[SHADER_DEFERRED];
-            gDeferredMaterialWaterProgram[i].mShaderGroup = LLGLSLShader::SG_WATER;
-
-            gDeferredMaterialWaterProgram[i].clearPermutations();
-
-            bool has_normal_map   = (i & 0x8) > 0;
-            bool has_specular_map = (i & 0x4) > 0;
-
-            if (has_normal_map)
-            {
-                gDeferredMaterialWaterProgram[i].addPermutation("HAS_NORMAL_MAP", "1");
-            }
-
-            if (has_specular_map)
-            {
-                gDeferredMaterialWaterProgram[i].addPermutation("HAS_SPECULAR_MAP", "1");
-            }
-
-            gDeferredMaterialWaterProgram[i].addPermutation("DIFFUSE_ALPHA_MODE", llformat("%d", alpha_mode));
-            if (alpha_mode != 0)
-            {
-                gDeferredMaterialWaterProgram[i].mFeatures.hasAlphaMask = true;
-                gDeferredMaterialWaterProgram[i].addPermutation("HAS_ALPHA_MASK", "1");
-            }
-
-            if (use_sun_shadow)
-            {
-                gDeferredMaterialWaterProgram[i].addPermutation("HAS_SUN_SHADOW", "1");
-            }
-
-            bool has_skin = i & 0x10;
-            if (has_skin)
-            {
-                gDeferredMaterialWaterProgram[i].addPermutation("HAS_SKIN", "1");
-            }
-            else
-            {
-                gDeferredMaterialWaterProgram[i].mRiggedVariant = &(gDeferredMaterialWaterProgram[i + 0x10]);
-            }
-            gDeferredMaterialWaterProgram[i].addPermutation("WATER_FOG","1");
-
-            gDeferredMaterialWaterProgram[i].mFeatures.hasReflectionProbes = true;
-            gDeferredMaterialWaterProgram[i].mFeatures.hasWaterFog = true;
-            gDeferredMaterialWaterProgram[i].mFeatures.hasSrgb = true;
-            gDeferredMaterialWaterProgram[i].mFeatures.encodesNormal = true;
-            gDeferredMaterialWaterProgram[i].mFeatures.calculatesAtmospherics = true;
-            gDeferredMaterialWaterProgram[i].mFeatures.hasAtmospherics = true;
-            gDeferredMaterialWaterProgram[i].mFeatures.hasGamma = true;
-
-            gDeferredMaterialWaterProgram[i].mFeatures.hasShadows = use_sun_shadow;
-            
-            if (has_skin)
-            {
-                gDeferredMaterialWaterProgram[i].mFeatures.hasObjectSkinning = true;
-            }
-
-            success = gDeferredMaterialWaterProgram[i].createShader(NULL, NULL);//&mWLUniforms);
-            llassert(success);
-		}
 	}
 
 	gDeferredMaterialProgram[1].mFeatures.hasLighting = true;
@@ -1240,15 +1116,6 @@ BOOL LLViewerShaderMgr::loadShadersDeferred()
 	gDeferredMaterialProgram[9+LLMaterial::SHADER_COUNT].mFeatures.hasLighting = true;
 	gDeferredMaterialProgram[13+LLMaterial::SHADER_COUNT].mFeatures.hasLighting = true;
 
-	gDeferredMaterialWaterProgram[1].mFeatures.hasLighting = true;
-	gDeferredMaterialWaterProgram[5].mFeatures.hasLighting = true;
-	gDeferredMaterialWaterProgram[9].mFeatures.hasLighting = true;
-	gDeferredMaterialWaterProgram[13].mFeatures.hasLighting = true;
-	gDeferredMaterialWaterProgram[1+LLMaterial::SHADER_COUNT].mFeatures.hasLighting = true;
-	gDeferredMaterialWaterProgram[5+LLMaterial::SHADER_COUNT].mFeatures.hasLighting = true;
-	gDeferredMaterialWaterProgram[9+LLMaterial::SHADER_COUNT].mFeatures.hasLighting = true;
-	gDeferredMaterialWaterProgram[13+LLMaterial::SHADER_COUNT].mFeatures.hasLighting = true;
-
     if (success)
     {
         gDeferredPBROpaqueProgram.mName = "Deferred PBR Opaque Shader";
@@ -1358,62 +1225,6 @@ BOOL LLViewerShaderMgr::loadShadersDeferred()
 
     if (success)
     {
-        LLGLSLShader* shader = &gDeferredPBRAlphaWaterProgram;
-        shader->mName = "Deferred PBR Alpha Underwater Shader";
-                          
-        shader->mFeatures.calculatesLighting = false;
-        shader->mFeatures.hasLighting = false;
-        shader->mFeatures.isAlphaLighting = true;
-        shader->mFeatures.hasWaterFog = true;
-        shader->mFeatures.hasSrgb = true;
-        shader->mFeatures.encodesNormal = true;
-        shader->mFeatures.calculatesAtmospherics = true;
-        shader->mFeatures.hasAtmospherics = true;
-        shader->mFeatures.hasGamma = true;
-        shader->mFeatures.hasShadows = use_sun_shadow;
-        shader->mFeatures.isDeferred = true; // include deferredUtils
-        shader->mFeatures.hasReflectionProbes = mShaderLevel[SHADER_DEFERRED];
-
-        shader->mShaderGroup = LLGLSLShader::SG_WATER;
-
-        shader->mShaderFiles.clear();
-        shader->mShaderFiles.push_back(make_pair("deferred/pbralphaV.glsl", GL_VERTEX_SHADER));
-        shader->mShaderFiles.push_back(make_pair("deferred/pbralphaF.glsl", GL_FRAGMENT_SHADER));
-
-        shader->clearPermutations();
-
-        U32 alpha_mode = LLMaterial::DIFFUSE_ALPHA_MODE_BLEND;
-        shader->addPermutation("DIFFUSE_ALPHA_MODE", llformat("%d", alpha_mode));
-        shader->addPermutation("HAS_NORMAL_MAP", "1");
-        shader->addPermutation("HAS_SPECULAR_MAP", "1"); // PBR: Packed: Occlusion, Metal, Roughness
-        shader->addPermutation("HAS_EMISSIVE_MAP", "1");
-        shader->addPermutation("USE_VERTEX_COLOR", "1");
-        shader->addPermutation("WATER_FOG", "1");
-
-        if (use_sun_shadow)
-        {
-            shader->addPermutation("HAS_SUN_SHADOW", "1");
-        }
-
-        shader->mShaderLevel = mShaderLevel[SHADER_DEFERRED];
-        success = make_rigged_variant(*shader, gDeferredSkinnedPBRAlphaWaterProgram);
-        if (success)
-        {
-            success = shader->createShader(NULL, NULL);
-        }
-        llassert(success);
-
-        // Alpha Shader Hack
-        // See: LLRender::syncMatrices()
-        shader->mFeatures.calculatesLighting = true;
-        shader->mFeatures.hasLighting = true;
-
-        shader->mRiggedVariant->mFeatures.calculatesLighting = true;
-        shader->mRiggedVariant->mFeatures.hasLighting = true;
-    }
-
-    if (success)
-    {
         LLGLSLShader* shader = &gHUDPBRAlphaProgram;
         shader->mName = "HUD PBR Alpha Shader";
 
@@ -1640,7 +1451,6 @@ BOOL LLViewerShaderMgr::loadShadersDeferred()
             shader->mFeatures.hasGamma = true;
             shader->mFeatures.hasShadows = use_sun_shadow;
             shader->mFeatures.hasReflectionProbes = true;
-            shader->mFeatures.hasWaterFog = true;
             shader->mFeatures.mIndexedTextureChannels = LLGLSLShader::sIndexedTextureChannels;
 
             shader->mShaderFiles.clear();
@@ -1737,68 +1547,6 @@ BOOL LLViewerShaderMgr::loadShadersDeferred()
         }
     }
 
-    if (success)
-    {
-        LLGLSLShader* shader[] = {
-            &gDeferredAlphaWaterProgram,
-            &gDeferredSkinnedAlphaWaterProgram
-        };
-        
-        gDeferredAlphaWaterProgram.mRiggedVariant = &gDeferredSkinnedAlphaWaterProgram;
-		
-        gDeferredAlphaWaterProgram.mName = "Deferred Alpha Underwater Shader";
-        gDeferredSkinnedAlphaWaterProgram.mName = "Deferred Skinned Alpha Underwater Shader";
-
-        for (int i = 0; i < 2 && success; ++i)
-        {
-            shader[i]->mFeatures.calculatesLighting = false;
-            shader[i]->mFeatures.hasLighting = false;
-            shader[i]->mFeatures.isAlphaLighting = true;
-            shader[i]->mFeatures.disableTextureIndex = true; //hack to disable auto-setup of texture channels
-            shader[i]->mFeatures.hasWaterFog = true;
-            shader[i]->mFeatures.hasSrgb = true;
-            shader[i]->mFeatures.encodesNormal = true;
-            shader[i]->mFeatures.calculatesAtmospherics = true;
-            shader[i]->mFeatures.hasAtmospherics = true;
-            shader[i]->mFeatures.hasGamma = true;
-            shader[i]->mFeatures.hasShadows = use_sun_shadow;
-            shader[i]->mFeatures.hasReflectionProbes = true;
-            shader[i]->mFeatures.mIndexedTextureChannels = LLGLSLShader::sIndexedTextureChannels;
-            shader[i]->mShaderGroup = LLGLSLShader::SG_WATER;
-            shader[i]->mShaderFiles.clear();
-            shader[i]->mShaderFiles.push_back(make_pair("deferred/alphaV.glsl", GL_VERTEX_SHADER));
-            shader[i]->mShaderFiles.push_back(make_pair("deferred/alphaF.glsl", GL_FRAGMENT_SHADER));
-
-            shader[i]->clearPermutations();
-            shader[i]->addPermutation("USE_INDEXED_TEX", "1");
-            shader[i]->addPermutation("WATER_FOG", "1");
-            shader[i]->addPermutation("USE_VERTEX_COLOR", "1");
-            shader[i]->addPermutation("HAS_ALPHA_MASK", "1");
-            if (use_sun_shadow)
-            {
-                shader[i]->addPermutation("HAS_SUN_SHADOW", "1");
-            }
-
-            if (i == 1)
-            { // rigged variant
-                shader[i]->mFeatures.hasObjectSkinning = true;
-                shader[i]->addPermutation("HAS_SKIN", "1");
-            }
-            else
-            {
-                shader[i]->mRiggedVariant = shader[1];
-            }
-            shader[i]->mShaderLevel = mShaderLevel[SHADER_DEFERRED];
-
-            success = shader[i]->createShader(NULL, NULL);
-            llassert(success);
-
-            // Hack
-            shader[i]->mFeatures.calculatesLighting = true;
-            shader[i]->mFeatures.hasLighting = true;
-        }
-	}
-
 	if (success)
 	{
 		gDeferredAvatarEyesProgram.mName = "Deferred Avatar Eyes Shader";
@@ -1935,71 +1683,6 @@ BOOL LLViewerShaderMgr::loadShadersDeferred()
 
 	if (success)
 	{
-		gDeferredFullbrightWaterProgram.mName = "Deferred Fullbright Underwater Shader";
-		gDeferredFullbrightWaterProgram.mFeatures.calculatesAtmospherics = true;
-		gDeferredFullbrightWaterProgram.mFeatures.hasGamma = true;
-		gDeferredFullbrightWaterProgram.mFeatures.hasAtmospherics = true;
-		gDeferredFullbrightWaterProgram.mFeatures.hasWaterFog = true;
-		gDeferredFullbrightWaterProgram.mFeatures.hasSrgb = true;
-		gDeferredFullbrightWaterProgram.mFeatures.mIndexedTextureChannels = LLGLSLShader::sIndexedTextureChannels;
-		gDeferredFullbrightWaterProgram.mShaderFiles.clear();
-		gDeferredFullbrightWaterProgram.mShaderFiles.push_back(make_pair("deferred/fullbrightV.glsl", GL_VERTEX_SHADER));
-		gDeferredFullbrightWaterProgram.mShaderFiles.push_back(make_pair("deferred/fullbrightF.glsl", GL_FRAGMENT_SHADER));
-		gDeferredFullbrightWaterProgram.mShaderLevel = mShaderLevel[SHADER_DEFERRED];
-		gDeferredFullbrightWaterProgram.mShaderGroup = LLGLSLShader::SG_WATER;
-		gDeferredFullbrightWaterProgram.addPermutation("WATER_FOG","1");
-        success = make_rigged_variant(gDeferredFullbrightWaterProgram, gDeferredSkinnedFullbrightWaterProgram);
-		success = success && gDeferredFullbrightWaterProgram.createShader(NULL, NULL);
-		llassert(success);
-	}
-    
-    if (success)
-    {
-        gDeferredFullbrightWaterAlphaProgram.mName = "Deferred Fullbright Underwater Alpha Shader";
-        gDeferredFullbrightWaterAlphaProgram.mFeatures.calculatesAtmospherics = true;
-        gDeferredFullbrightWaterAlphaProgram.mFeatures.hasGamma = true;
-        gDeferredFullbrightWaterAlphaProgram.mFeatures.hasAtmospherics = true;
-        gDeferredFullbrightWaterAlphaProgram.mFeatures.hasWaterFog = true;
-        gDeferredFullbrightWaterAlphaProgram.mFeatures.hasSrgb = true;
-        gDeferredFullbrightWaterAlphaProgram.mFeatures.isDeferred = true;
-        gDeferredFullbrightWaterAlphaProgram.mFeatures.mIndexedTextureChannels = LLGLSLShader::sIndexedTextureChannels;
-        gDeferredFullbrightWaterAlphaProgram.mShaderFiles.clear();
-        gDeferredFullbrightWaterAlphaProgram.mShaderFiles.push_back(make_pair("deferred/fullbrightV.glsl", GL_VERTEX_SHADER));
-        gDeferredFullbrightWaterAlphaProgram.mShaderFiles.push_back(make_pair("deferred/fullbrightF.glsl", GL_FRAGMENT_SHADER));
-        gDeferredFullbrightWaterAlphaProgram.mShaderLevel = mShaderLevel[SHADER_DEFERRED];
-        gDeferredFullbrightWaterAlphaProgram.mShaderGroup = LLGLSLShader::SG_WATER;
-        gDeferredFullbrightWaterAlphaProgram.clearPermutations();
-        gDeferredFullbrightWaterAlphaProgram.addPermutation("WATER_FOG", "1");
-        gDeferredFullbrightWaterAlphaProgram.addPermutation("IS_ALPHA", "1");
-        success = make_rigged_variant(gDeferredFullbrightWaterAlphaProgram, gDeferredSkinnedFullbrightWaterAlphaProgram);
-        success = success && gDeferredFullbrightWaterAlphaProgram.createShader(NULL, NULL);
-        llassert(success);
-    }
-
-	if (success)
-	{
-		gDeferredFullbrightAlphaMaskWaterProgram.mName = "Deferred Fullbright Underwater Alpha Masking Shader";
-		gDeferredFullbrightAlphaMaskWaterProgram.mFeatures.calculatesAtmospherics = true;
-		gDeferredFullbrightAlphaMaskWaterProgram.mFeatures.hasGamma = true;
-		gDeferredFullbrightAlphaMaskWaterProgram.mFeatures.hasAtmospherics = true;
-		gDeferredFullbrightAlphaMaskWaterProgram.mFeatures.hasWaterFog = true;
-		gDeferredFullbrightAlphaMaskWaterProgram.mFeatures.hasSrgb = true;
-		gDeferredFullbrightAlphaMaskWaterProgram.mFeatures.mIndexedTextureChannels = LLGLSLShader::sIndexedTextureChannels;
-		gDeferredFullbrightAlphaMaskWaterProgram.mShaderFiles.clear();
-		gDeferredFullbrightAlphaMaskWaterProgram.mShaderFiles.push_back(make_pair("deferred/fullbrightV.glsl", GL_VERTEX_SHADER));
-		gDeferredFullbrightAlphaMaskWaterProgram.mShaderFiles.push_back(make_pair("deferred/fullbrightF.glsl", GL_FRAGMENT_SHADER));
-		gDeferredFullbrightAlphaMaskWaterProgram.mShaderLevel = mShaderLevel[SHADER_DEFERRED];
-		gDeferredFullbrightAlphaMaskWaterProgram.mShaderGroup = LLGLSLShader::SG_WATER;
-		gDeferredFullbrightAlphaMaskWaterProgram.clearPermutations();
-		gDeferredFullbrightAlphaMaskWaterProgram.addPermutation("HAS_ALPHA_MASK","1");
-		gDeferredFullbrightAlphaMaskWaterProgram.addPermutation("WATER_FOG","1");
-        success = make_rigged_variant(gDeferredFullbrightAlphaMaskWaterProgram, gDeferredSkinnedFullbrightAlphaMaskWaterProgram);
-		success = success && gDeferredFullbrightAlphaMaskWaterProgram.createShader(NULL, NULL);
-		llassert(success);
-	}
-
-	if (success)
-	{
 		gDeferredFullbrightShinyProgram.mName = "Deferred FullbrightShiny Shader";
 		gDeferredFullbrightShinyProgram.mFeatures.calculatesAtmospherics = true;
 		gDeferredFullbrightShinyProgram.mFeatures.hasAtmospherics = true;
@@ -2084,40 +1767,52 @@ BOOL LLViewerShaderMgr::loadShadersDeferred()
 		llassert(success);
 	}
 
-	if (success)
-	{
-		gDeferredSoftenWaterProgram.mName = "Deferred Soften Underwater Shader";
-		gDeferredSoftenWaterProgram.mShaderFiles.clear();
-		gDeferredSoftenWaterProgram.mShaderFiles.push_back(make_pair("deferred/softenLightV.glsl", GL_VERTEX_SHADER));
-		gDeferredSoftenWaterProgram.mShaderFiles.push_back(make_pair("deferred/softenLightF.glsl", GL_FRAGMENT_SHADER));
-
-        gDeferredSoftenWaterProgram.clearPermutations();
-		gDeferredSoftenWaterProgram.mShaderLevel = mShaderLevel[SHADER_DEFERRED];
-		gDeferredSoftenWaterProgram.addPermutation("WATER_FOG", "1");
-		gDeferredSoftenWaterProgram.mShaderGroup = LLGLSLShader::SG_WATER;
-		gDeferredSoftenWaterProgram.mFeatures.hasWaterFog = true;
-		gDeferredSoftenWaterProgram.mFeatures.hasSrgb = true;
-		gDeferredSoftenWaterProgram.mFeatures.calculatesAtmospherics = true;
-		gDeferredSoftenWaterProgram.mFeatures.hasAtmospherics = true;
-		gDeferredSoftenWaterProgram.mFeatures.hasGamma = true;
-        gDeferredSoftenWaterProgram.mFeatures.isDeferred = true;
-        gDeferredSoftenWaterProgram.mFeatures.hasShadows = use_sun_shadow;
-        gDeferredSoftenWaterProgram.mFeatures.hasReflectionProbes = mShaderLevel[SHADER_DEFERRED] > 2;
+    if (success)
+    {
+        gHazeProgram.mName = "Haze Shader";
+        gHazeProgram.mShaderFiles.clear();
+        gHazeProgram.mFeatures.hasSrgb                = true;
+        gHazeProgram.mFeatures.calculatesAtmospherics = true;
+        gHazeProgram.mFeatures.hasAtmospherics        = true;
+        gHazeProgram.mFeatures.hasGamma               = true;
+        gHazeProgram.mFeatures.isDeferred             = true;
+        gHazeProgram.mFeatures.hasShadows             = use_sun_shadow;
+        gHazeProgram.mFeatures.hasReflectionProbes    = mShaderLevel[SHADER_DEFERRED] > 2;
+
+        gHazeProgram.clearPermutations();
+        gHazeProgram.mShaderFiles.push_back(make_pair("deferred/softenLightV.glsl", GL_VERTEX_SHADER));
+        gHazeProgram.mShaderFiles.push_back(make_pair("deferred/hazeF.glsl", GL_FRAGMENT_SHADER));
+
+        gHazeProgram.mShaderLevel = mShaderLevel[SHADER_DEFERRED];
+
+        success = gHazeProgram.createShader(NULL, NULL);
+        llassert(success);
+    }
 
-        if (use_sun_shadow)
-        {
-            gDeferredSoftenWaterProgram.addPermutation("HAS_SUN_SHADOW", "1");
-        }
 
-		if (gSavedSettings.getBOOL("RenderDeferredSSAO"))
-		{ //if using SSAO, take screen space light map into account as if shadows are enabled
-			gDeferredSoftenWaterProgram.mShaderLevel = llmax(gDeferredSoftenWaterProgram.mShaderLevel, 2);
-            gDeferredSoftenWaterProgram.addPermutation("HAS_SSAO", "1");
-		}
+    if (success)
+    {
+        gHazeWaterProgram.mName = "Water Haze Shader";
+        gHazeWaterProgram.mShaderFiles.clear();
+        gHazeWaterProgram.mShaderGroup           = LLGLSLShader::SG_WATER;
+        gHazeWaterProgram.mFeatures.hasSrgb                = true;
+        gHazeWaterProgram.mFeatures.calculatesAtmospherics = true;
+        gHazeWaterProgram.mFeatures.hasAtmospherics        = true;
+        gHazeWaterProgram.mFeatures.hasGamma               = true;
+        gHazeWaterProgram.mFeatures.isDeferred             = true;
+        gHazeWaterProgram.mFeatures.hasShadows             = use_sun_shadow;
+        gHazeWaterProgram.mFeatures.hasReflectionProbes    = mShaderLevel[SHADER_DEFERRED] > 2;
+
+        gHazeWaterProgram.clearPermutations();
+        gHazeWaterProgram.mShaderFiles.push_back(make_pair("deferred/waterHazeV.glsl", GL_VERTEX_SHADER));
+        gHazeWaterProgram.mShaderFiles.push_back(make_pair("deferred/waterHazeF.glsl", GL_FRAGMENT_SHADER));
+
+        gHazeWaterProgram.mShaderLevel = mShaderLevel[SHADER_DEFERRED];
+
+        success = gHazeWaterProgram.createShader(NULL, NULL);
+        llassert(success);
+    }
 
-		success = gDeferredSoftenWaterProgram.createShader(NULL, NULL);
-		llassert(success);
-	}
 
 	if (success)
 	{
@@ -2264,7 +1959,6 @@ BOOL LLViewerShaderMgr::loadShadersDeferred()
 		gDeferredTerrainProgram.mFeatures.hasLighting = false;
 		gDeferredTerrainProgram.mFeatures.isAlphaLighting = true;
 		gDeferredTerrainProgram.mFeatures.disableTextureIndex = true; //hack to disable auto-setup of texture channels
-		gDeferredTerrainProgram.mFeatures.hasWaterFog = true;
 		gDeferredTerrainProgram.mFeatures.calculatesAtmospherics = true;
 		gDeferredTerrainProgram.mFeatures.hasAtmospherics = true;
 		gDeferredTerrainProgram.mFeatures.hasGamma = true;
@@ -2279,31 +1973,6 @@ BOOL LLViewerShaderMgr::loadShadersDeferred()
 
 	if (success)
 	{
-		gDeferredTerrainWaterProgram.mName = "Deferred Terrain Underwater Shader";
-		gDeferredTerrainWaterProgram.mFeatures.encodesNormal = true;
-		gDeferredTerrainWaterProgram.mFeatures.hasSrgb = true;
-		gDeferredTerrainWaterProgram.mFeatures.calculatesLighting = false;
-		gDeferredTerrainWaterProgram.mFeatures.hasLighting = false;
-		gDeferredTerrainWaterProgram.mFeatures.isAlphaLighting = true;
-		gDeferredTerrainWaterProgram.mFeatures.disableTextureIndex = true; //hack to disable auto-setup of texture channels
-		gDeferredTerrainWaterProgram.mFeatures.hasWaterFog = true;
-		gDeferredTerrainWaterProgram.mFeatures.calculatesAtmospherics = true;
-		gDeferredTerrainWaterProgram.mFeatures.hasAtmospherics = true;
-		gDeferredTerrainWaterProgram.mFeatures.hasGamma = true;
-		
-		gDeferredTerrainWaterProgram.mShaderFiles.clear();
-		gDeferredTerrainWaterProgram.mShaderFiles.push_back(make_pair("deferred/terrainV.glsl", GL_VERTEX_SHADER));
-		gDeferredTerrainWaterProgram.mShaderFiles.push_back(make_pair("deferred/terrainF.glsl", GL_FRAGMENT_SHADER));
-		gDeferredTerrainWaterProgram.mShaderLevel = mShaderLevel[SHADER_DEFERRED];
-		gDeferredTerrainWaterProgram.mShaderGroup = LLGLSLShader::SG_WATER;
-		gDeferredTerrainWaterProgram.clearPermutations();
-		gDeferredTerrainWaterProgram.addPermutation("WATER_FOG", "1");
-		success = gDeferredTerrainWaterProgram.createShader(NULL, NULL);
-        llassert(success);
-	}
-
-	if (success)
-	{
 		gDeferredAvatarProgram.mName = "Deferred Avatar Shader";
 		gDeferredAvatarProgram.mFeatures.hasSkinning = true;
 		gDeferredAvatarProgram.mFeatures.encodesNormal = true;
@@ -2662,24 +2331,6 @@ BOOL LLViewerShaderMgr::loadShadersObject()
 	
 	if (success)
 	{
-		gObjectAlphaMaskNoColorWaterProgram.mName = "No color alpha mask Water Shader";
-		gObjectAlphaMaskNoColorWaterProgram.mFeatures.calculatesLighting = true;
-		gObjectAlphaMaskNoColorWaterProgram.mFeatures.calculatesAtmospherics = true;
-		gObjectAlphaMaskNoColorWaterProgram.mFeatures.hasWaterFog = true;
-		gObjectAlphaMaskNoColorWaterProgram.mFeatures.hasAtmospherics = true;
-		gObjectAlphaMaskNoColorWaterProgram.mFeatures.hasLighting = true;
-		gObjectAlphaMaskNoColorWaterProgram.mFeatures.disableTextureIndex = true;
-		gObjectAlphaMaskNoColorWaterProgram.mFeatures.hasAlphaMask = true;
-		gObjectAlphaMaskNoColorWaterProgram.mShaderFiles.clear();
-		gObjectAlphaMaskNoColorWaterProgram.mShaderFiles.push_back(make_pair("objects/simpleNoColorV.glsl", GL_VERTEX_SHADER));
-		gObjectAlphaMaskNoColorWaterProgram.mShaderFiles.push_back(make_pair("objects/simpleWaterF.glsl", GL_FRAGMENT_SHADER));
-		gObjectAlphaMaskNoColorWaterProgram.mShaderLevel = mShaderLevel[SHADER_OBJECT];
-		gObjectAlphaMaskNoColorWaterProgram.mShaderGroup = LLGLSLShader::SG_WATER;
-		success = gObjectAlphaMaskNoColorWaterProgram.createShader(NULL, NULL);
-	}
-
-	if (success)
-	{
 		gImpostorProgram.mName = "Impostor Shader";
 		gImpostorProgram.mFeatures.disableTextureIndex = true;
 		gImpostorProgram.mFeatures.hasSrgb = true;
diff --git a/indra/newview/llviewershadermgr.h b/indra/newview/llviewershadermgr.h
index b0b9719d76..04da7e48ae 100644
--- a/indra/newview/llviewershadermgr.h
+++ b/indra/newview/llviewershadermgr.h
@@ -175,7 +175,6 @@ extern LLGLSLShader        gSkinnedObjectFullbrightAlphaMaskProgram;
 extern LLGLSLShader		gObjectBumpProgram;
 extern LLGLSLShader        gSkinnedObjectBumpProgram;
 extern LLGLSLShader		gObjectAlphaMaskNoColorProgram;
-extern LLGLSLShader		gObjectAlphaMaskNoColorWaterProgram;
 
 //environment shaders
 extern LLGLSLShader			gWaterProgram;
@@ -211,7 +210,6 @@ extern LLGLSLShader			gDeferredNonIndexedDiffuseAlphaMaskNoColorProgram;
 extern LLGLSLShader			gDeferredNonIndexedDiffuseProgram;
 extern LLGLSLShader			gDeferredBumpProgram;
 extern LLGLSLShader			gDeferredTerrainProgram;
-extern LLGLSLShader			gDeferredTerrainWaterProgram;
 extern LLGLSLShader			gDeferredTreeProgram;
 extern LLGLSLShader			gDeferredTreeShadowProgram;
 extern LLGLSLShader			gDeferredLightProgram;
@@ -219,10 +217,11 @@ extern LLGLSLShader			gDeferredMultiLightProgram[LL_DEFERRED_MULTI_LIGHT_COUNT];
 extern LLGLSLShader			gDeferredSpotLightProgram;
 extern LLGLSLShader			gDeferredMultiSpotLightProgram;
 extern LLGLSLShader			gDeferredSunProgram;
+extern LLGLSLShader         gHazeProgram;
+extern LLGLSLShader         gHazeWaterProgram;
 extern LLGLSLShader			gDeferredBlurLightProgram;
 extern LLGLSLShader			gDeferredAvatarProgram;
 extern LLGLSLShader			gDeferredSoftenProgram;
-extern LLGLSLShader			gDeferredSoftenWaterProgram;
 extern LLGLSLShader			gDeferredShadowProgram;
 extern LLGLSLShader			gDeferredShadowCubeProgram;
 extern LLGLSLShader			gDeferredShadowAlphaMaskProgram;
@@ -251,10 +250,6 @@ extern LLGLSLShader			gDeferredFullbrightAlphaMaskProgram;
 extern LLGLSLShader			gHUDFullbrightAlphaMaskProgram;
 extern LLGLSLShader			gDeferredFullbrightAlphaMaskAlphaProgram;
 extern LLGLSLShader			gHUDFullbrightAlphaMaskAlphaProgram;
-extern LLGLSLShader			gDeferredAlphaWaterProgram;
-extern LLGLSLShader			gDeferredFullbrightWaterProgram;
-extern LLGLSLShader			gDeferredFullbrightWaterAlphaProgram;
-extern LLGLSLShader			gDeferredFullbrightAlphaMaskWaterProgram;
 extern LLGLSLShader			gDeferredEmissiveProgram;
 extern LLGLSLShader			gDeferredAvatarEyesProgram;
 extern LLGLSLShader			gDeferredAvatarAlphaProgram;
@@ -271,12 +266,10 @@ extern LLGLSLShader			gDeferredBufferVisualProgram;
 
 // Deferred materials shaders
 extern LLGLSLShader			gDeferredMaterialProgram[LLMaterial::SHADER_COUNT*2];
-extern LLGLSLShader			gDeferredMaterialWaterProgram[LLMaterial::SHADER_COUNT*2];
 
 extern LLGLSLShader         gHUDPBROpaqueProgram;
 extern LLGLSLShader         gPBRGlowProgram;
 extern LLGLSLShader         gDeferredPBROpaqueProgram;
 extern LLGLSLShader         gDeferredPBRAlphaProgram;
-extern LLGLSLShader         gDeferredPBRAlphaWaterProgram;
 extern LLGLSLShader         gHUDPBRAlphaProgram;
 #endif
diff --git a/indra/newview/llviewertexture.cpp b/indra/newview/llviewertexture.cpp
index ec6f2c848f..56bba51692 100644
--- a/indra/newview/llviewertexture.cpp
+++ b/indra/newview/llviewertexture.cpp
@@ -2124,9 +2124,6 @@ bool LLViewerFetchedTexture::updateFetch()
 		}
 	}
 	
-	llassert(mRawImage.notNull() || !mIsRawImageValid);
-	llassert(mRawImage.notNull() || !mNeedsCreateTexture);
-	
 	return mIsFetching ? true : false;
 }
 
diff --git a/indra/newview/llviewertexturelist.cpp b/indra/newview/llviewertexturelist.cpp
index 0d074cb9d4..9c4240770c 100644
--- a/indra/newview/llviewertexturelist.cpp
+++ b/indra/newview/llviewertexturelist.cpp
@@ -896,6 +896,13 @@ void LLViewerTextureList::updateImageDecodePriority(LLViewerFetchedTexture* imag
                 {
                     F32 vsize = face->getPixelArea();
 
+                    // scale desired texture resolution higher or lower depending on texture scale
+                    const LLTextureEntry* te = face->getTextureEntry();
+                    F32 min_scale = te ? llmin(fabsf(te->getScaleS()), fabsf(te->getScaleT())) : 1.f;
+                    min_scale = llmax(min_scale*min_scale, 0.1f);
+
+                    vsize /= min_scale;
+
 #if LL_DARWIN
                     vsize /= 1.f + LLViewerTexture::sDesiredDiscardBias*(1.f+face->getDrawable()->mDistanceWRTCamera*bias_distance_scale);
 #else
@@ -913,7 +920,6 @@ void LLViewerTextureList::updateImageDecodePriority(LLViewerFetchedTexture* imag
                     // if a GLTF material is present, ignore that face
                     // as far as this texture stats go, but update the GLTF material 
                     // stats
-                    const LLTextureEntry* te = face->getTextureEntry();
                     LLFetchedGLTFMaterial* mat = te ? (LLFetchedGLTFMaterial*)te->getGLTFRenderMaterial() : nullptr;
                     llassert(mat == nullptr || dynamic_cast<LLFetchedGLTFMaterial*>(te->getGLTFRenderMaterial()) != nullptr);
                     if (mat)
diff --git a/indra/newview/llviewerwindow.cpp b/indra/newview/llviewerwindow.cpp
index 2f21ef36f7..a89d535943 100644
--- a/indra/newview/llviewerwindow.cpp
+++ b/indra/newview/llviewerwindow.cpp
@@ -229,6 +229,7 @@ extern BOOL gDisplaySwapBuffers;
 extern BOOL gDepthDirty;
 extern BOOL gResizeScreenTexture;
 extern BOOL gCubeSnapshot;
+extern BOOL gSnapshotNoPost;
 
 LLViewerWindow	*gViewerWindow = NULL;
 
@@ -4888,16 +4889,16 @@ void LLViewerWindow::resetSnapshotLoc() const
 	gSavedPerAccountSettings.setString("SnapshotBaseDir", std::string());
 }
 
-BOOL LLViewerWindow::thumbnailSnapshot(LLImageRaw *raw, S32 preview_width, S32 preview_height, BOOL show_ui, BOOL show_hud, BOOL do_rebuild, LLSnapshotModel::ESnapshotLayerType type)
+BOOL LLViewerWindow::thumbnailSnapshot(LLImageRaw *raw, S32 preview_width, S32 preview_height, BOOL show_ui, BOOL show_hud, BOOL do_rebuild, BOOL no_post, LLSnapshotModel::ESnapshotLayerType type)
 {
-	return rawSnapshot(raw, preview_width, preview_height, FALSE, FALSE, show_ui, show_hud, do_rebuild, type);
+	return rawSnapshot(raw, preview_width, preview_height, FALSE, FALSE, show_ui, show_hud, do_rebuild, no_post, type);
 }
 
 // Saves the image from the screen to a raw image
 // Since the required size might be bigger than the available screen, this method rerenders the scene in parts (called subimages) and copy
 // the results over to the final raw image.
 BOOL LLViewerWindow::rawSnapshot(LLImageRaw *raw, S32 image_width, S32 image_height, 
-    BOOL keep_window_aspect, BOOL is_texture, BOOL show_ui, BOOL show_hud, BOOL do_rebuild, LLSnapshotModel::ESnapshotLayerType type, S32 max_size)
+    BOOL keep_window_aspect, BOOL is_texture, BOOL show_ui, BOOL show_hud, BOOL do_rebuild, BOOL no_post, LLSnapshotModel::ESnapshotLayerType type, S32 max_size)
 {
 	if (!raw)
 	{
@@ -4914,6 +4915,7 @@ BOOL LLViewerWindow::rawSnapshot(LLImageRaw *raw, S32 image_width, S32 image_hei
 	}
 
 	// PRE SNAPSHOT
+	gSnapshotNoPost = no_post;
 	gDisplaySwapBuffers = FALSE;
 	
     glClear(GL_DEPTH_BUFFER_BIT | GL_COLOR_BUFFER_BIT); // stencil buffer is deprecated | GL_STENCIL_BUFFER_BIT);
@@ -5144,6 +5146,7 @@ BOOL LLViewerWindow::rawSnapshot(LLImageRaw *raw, S32 image_width, S32 image_hei
 	}
 
 	gDisplaySwapBuffers = FALSE;
+	gSnapshotNoPost = FALSE;
 	gDepthDirty = TRUE;
 
 	// POST SNAPSHOT
diff --git a/indra/newview/llviewerwindow.h b/indra/newview/llviewerwindow.h
index 6e8a5b2f4e..ccef006a07 100644
--- a/indra/newview/llviewerwindow.h
+++ b/indra/newview/llviewerwindow.h
@@ -362,7 +362,7 @@ public:
 
 	BOOL			saveSnapshot(const std::string&  filename, S32 image_width, S32 image_height, BOOL show_ui = TRUE, BOOL show_hud = TRUE, BOOL do_rebuild = FALSE, LLSnapshotModel::ESnapshotLayerType type = LLSnapshotModel::SNAPSHOT_TYPE_COLOR, LLSnapshotModel::ESnapshotFormat format = LLSnapshotModel::SNAPSHOT_FORMAT_BMP);
 	BOOL			rawSnapshot(LLImageRaw *raw, S32 image_width, S32 image_height, BOOL keep_window_aspect = TRUE, BOOL is_texture = FALSE,
-		BOOL show_ui = TRUE, BOOL show_hud = TRUE, BOOL do_rebuild = FALSE, LLSnapshotModel::ESnapshotLayerType type = LLSnapshotModel::SNAPSHOT_TYPE_COLOR, S32 max_size = MAX_SNAPSHOT_IMAGE_SIZE);
+		BOOL show_ui = TRUE, BOOL show_hud = TRUE, BOOL do_rebuild = FALSE, BOOL no_post = FALSE, LLSnapshotModel::ESnapshotLayerType type = LLSnapshotModel::SNAPSHOT_TYPE_COLOR, S32 max_size = MAX_SNAPSHOT_IMAGE_SIZE);
 
     BOOL			simpleSnapshot(LLImageRaw *raw, S32 image_width, S32 image_height, const int num_render_passes);
 
@@ -380,7 +380,7 @@ public:
     // special implementation of simpleSnapshot for reflection maps
     BOOL			reflectionSnapshot(LLImageRaw* raw, S32 image_width, S32 image_height, const int num_render_passes);
 
-    BOOL			thumbnailSnapshot(LLImageRaw *raw, S32 preview_width, S32 preview_height, BOOL show_ui, BOOL show_hud, BOOL do_rebuild, LLSnapshotModel::ESnapshotLayerType type);
+    BOOL			thumbnailSnapshot(LLImageRaw *raw, S32 preview_width, S32 preview_height, BOOL show_ui, BOOL show_hud, BOOL do_rebuild, BOOL no_post, LLSnapshotModel::ESnapshotLayerType type);
 	BOOL			isSnapshotLocSet() const;
 	void			resetSnapshotLoc() const;
 
diff --git a/indra/newview/llworld.cpp b/indra/newview/llworld.cpp
index 709a457862..9381211e9b 100644
--- a/indra/newview/llworld.cpp
+++ b/indra/newview/llworld.cpp
@@ -883,58 +883,6 @@ void LLWorld::waterHeightRegionInfo(std::string const& sim_name, F32 water_heigh
 	}
 }
 
-void LLWorld::precullWaterObjects(LLCamera& camera, LLCullResult* cull, bool include_void_water)
-{
-    LL_PROFILE_ZONE_SCOPED_CATEGORY_PIPELINE;
-	if (!gAgent.getRegion())
-	{
-		return;
-	}
-
-	if (mRegionList.empty())
-	{
-		LL_WARNS() << "No regions!" << LL_ENDL;
-		return;
-	}
-
-	for (region_list_t::iterator iter = mRegionList.begin();
-		 iter != mRegionList.end(); ++iter)
-	{
-		LLViewerRegion* regionp = *iter;
-		LLVOWater* waterp = regionp->getLand().getWaterObj();
-		if (waterp && waterp->mDrawable)
-		{
-			waterp->mDrawable->setVisible(camera);
-		    cull->pushDrawable(waterp->mDrawable);
-		}
-	}
-
-    if (include_void_water)
-    {
-		for (std::list<LLPointer<LLVOWater> >::iterator iter = mHoleWaterObjects.begin();
-			 iter != mHoleWaterObjects.end(); ++ iter)
-		{
-			LLVOWater* waterp = (*iter).get();
-		    if (waterp && waterp->mDrawable)
-            {
-                waterp->mDrawable->setVisible(camera);
-		        cull->pushDrawable(waterp->mDrawable);
-            }
-	    }
-    }
-
-	S32 dir;
-	for (dir = 0; dir < EDGE_WATER_OBJECTS_COUNT; dir++)
-	{
-		LLVOWater* waterp = mEdgeWaterObjects[dir];
-		if (waterp && waterp->mDrawable)
-		{
-            waterp->mDrawable->setVisible(camera);
-		    cull->pushDrawable(waterp->mDrawable);
-		}
-	}
-}
-
 void LLWorld::clearHoleWaterObjects()
 {
     for (std::list<LLPointer<LLVOWater> >::iterator iter = mHoleWaterObjects.begin();
diff --git a/indra/newview/llworld.h b/indra/newview/llworld.h
index f78cbcaa48..2878d10f5e 100644
--- a/indra/newview/llworld.h
+++ b/indra/newview/llworld.h
@@ -140,8 +140,6 @@ public:
 	LLViewerTexture *getDefaultWaterTexture();
     void updateWaterObjects();
 
-    void precullWaterObjects(LLCamera& camera, LLCullResult* cull, bool include_void_water);
-
 	void waterHeightRegionInfo(std::string const& sim_name, F32 water_height);
 	void shiftRegions(const LLVector3& offset);
 
diff --git a/indra/newview/pipeline.cpp b/indra/newview/pipeline.cpp
index 0a504890b8..5f866c0df5 100644
--- a/indra/newview/pipeline.cpp
+++ b/indra/newview/pipeline.cpp
@@ -211,6 +211,7 @@ extern S32 gBoxFrame;
 extern BOOL gDisplaySwapBuffers;
 extern BOOL gDebugGL;
 extern BOOL gCubeSnapshot;
+extern BOOL gSnapshotNoPost;
 
 bool	gAvatarBacklight = false;
 
@@ -786,10 +787,8 @@ bool LLPipeline::allocateScreenBuffer(U32 resX, U32 resY, U32 samples)
 		resY /= res_mod;
 	}
 
-    if (LLPipeline::sRenderTransparentWater)
-    { //water reflection texture
-        mWaterDis.allocate(resX, resY, GL_RGBA, true);
-    }
+    //water reflection texture (always needed as scratch space whether or not transparent water is enabled)
+    mWaterDis.allocate(resX, resY, GL_RGBA16F, true);
 
 	if (RenderUIBuffer)
 	{
@@ -2310,13 +2309,6 @@ void LLPipeline::updateCull(LLCamera& camera, LLCullResult& result)
         gSky.mVOWLSkyp->mDrawable->setVisible(camera);
         sCull->pushDrawable(gSky.mVOWLSkyp->mDrawable);
     }
-
-    bool render_water = !sReflectionRender && (hasRenderType(LLPipeline::RENDER_TYPE_WATER) || hasRenderType(LLPipeline::RENDER_TYPE_VOIDWATER));
-
-    if (render_water)
-    {
-        LLWorld::getInstance()->precullWaterObjects(camera, sCull, render_water);
-    }
 }
 
 void LLPipeline::markNotCulled(LLSpatialGroup* group, LLCamera& camera)
@@ -3827,10 +3819,7 @@ void LLPipeline::renderGeomDeferred(LLCamera& camera, bool do_occlusion)
 					poolp->endDeferredPass(i);
 					LLVertexBuffer::unbind();
 
-					if (gDebugGL || gDebugPipeline)
-					{
-						LLGLState::checkStates();
-					}
+					LLGLState::checkStates();
 				}
 			}
 			else
@@ -3877,6 +3866,20 @@ void LLPipeline::renderGeomPostDeferred(LLCamera& camera)
 
 	LLGLEnable cull(GL_CULL_FACE);
 
+    bool done_atmospherics = LLPipeline::sRenderingHUDs; //skip atmospherics on huds
+    bool done_water_haze = done_atmospherics;
+
+    // do atmospheric haze just before post water alpha
+    U32 atmospherics_pass = LLDrawPool::POOL_ALPHA_POST_WATER;
+
+    if (LLPipeline::sUnderWaterRender)
+    { // if under water, do atmospherics just before the water pass
+        atmospherics_pass = LLDrawPool::POOL_WATER;
+    }
+
+    // do water haze just before pre water alpha
+    U32 water_haze_pass = LLDrawPool::POOL_ALPHA_PRE_WATER;
+
 	calcNearbyLights(camera);
 	setupHWLights();
 
@@ -3896,6 +3899,18 @@ void LLPipeline::renderGeomPostDeferred(LLCamera& camera)
 		
 		cur_type = poolp->getType();
 
+        if (cur_type >= atmospherics_pass && !done_atmospherics)
+        { // do atmospherics against depth buffer before rendering alpha
+            doAtmospherics();
+            done_atmospherics = true;
+        }
+
+        if (cur_type >= water_haze_pass && !done_water_haze)
+        { // do water haze against depth buffer before rendering alpha
+            doWaterHaze();
+            done_water_haze = true;
+        }
+
 		pool_set_t::iterator iter2 = iter1;
 		if (hasRenderType(poolp->getType()) && poolp->getNumPostDeferredPasses() > 0)
 		{
@@ -6791,7 +6806,7 @@ void LLPipeline::gammaCorrect(LLRenderTarget* src, LLRenderTarget* dst) {
 	{
 		LL_PROFILE_GPU_ZONE("gamma correct");
 
-        static LLCachedControl<bool> no_post(gSavedSettings, "RenderDisablePostProcessing", false);
+        static LLCachedControl<bool> buildNoPost(gSavedSettings, "RenderDisablePostProcessing", false);
 
 		LLGLDepthTest depth(GL_FALSE, GL_FALSE);
 
@@ -6801,7 +6816,8 @@ void LLPipeline::gammaCorrect(LLRenderTarget* src, LLRenderTarget* dst) {
         
         LLSettingsSky::ptr_t psky = LLEnvironment::instance().getCurrentSky();
 
-        LLGLSLShader& shader = no_post && gFloaterTools->isAvailable() ? gNoPostGammaCorrectProgram : // no post (no gamma, no exposure, no tonemapping)
+        bool no_post = gSnapshotNoPost || (buildNoPost && gFloaterTools->isAvailable());
+        LLGLSLShader& shader = no_post ? gNoPostGammaCorrectProgram : // no post (no gamma, no exposure, no tonemapping)
             psky->getReflectionProbeAmbiance(should_auto_adjust) == 0.f ? gLegacyPostGammaCorrectProgram :
             gDeferredPostGammaCorrectProgram;
         
@@ -7458,7 +7474,7 @@ void LLPipeline::bindDeferredShaderFast(LLGLSLShader& shader)
     }
 }
 
-void LLPipeline::bindDeferredShader(LLGLSLShader& shader, LLRenderTarget* light_target)
+void LLPipeline::bindDeferredShader(LLGLSLShader& shader, LLRenderTarget* light_target, LLRenderTarget* depth_target)
 {
     LL_PROFILE_ZONE_SCOPED_CATEGORY_PIPELINE;
     LLRenderTarget* deferred_target       = &mRT->deferredScreen;
@@ -7497,7 +7513,14 @@ void LLPipeline::bindDeferredShader(LLGLSLShader& shader, LLRenderTarget* light_
     channel = shader.enableTexture(LLShaderMgr::DEFERRED_DEPTH, deferred_target->getUsage());
     if (channel > -1)
     {
-        gGL.getTexUnit(channel)->bind(deferred_target, TRUE);
+        if (depth_target)
+        {
+            gGL.getTexUnit(channel)->bind(depth_target, TRUE);
+        }
+        else
+        {
+            gGL.getTexUnit(channel)->bind(deferred_target, TRUE);
+        }
         stop_glerror();
     }
 
@@ -7875,7 +7898,7 @@ void LLPipeline::renderDeferredLighting()
 
         if (RenderDeferredAtmospheric)
         {  // apply sunlight contribution
-            LLGLSLShader &soften_shader = LLPipeline::sUnderWaterRender ? gDeferredSoftenWaterProgram : gDeferredSoftenProgram;
+            LLGLSLShader &soften_shader = gDeferredSoftenProgram;
 
             LL_PROFILE_ZONE_NAMED_CATEGORY_PIPELINE("renderDeferredLighting - atmospherics");
             LL_PROFILE_GPU_ZONE("atmospherics");
@@ -7904,7 +7927,7 @@ void LLPipeline::renderDeferredLighting()
                 mScreenTriangleVB->drawArrays(LLRender::TRIANGLES, 0, 3);
             }
 
-            unbindDeferredShader(LLPipeline::sUnderWaterRender ? gDeferredSoftenWaterProgram : gDeferredSoftenProgram);
+            unbindDeferredShader(gDeferredSoftenProgram);
         }
 
         static LLCachedControl<S32> local_light_count(gSavedSettings, "RenderLocalLightCount", 256);
@@ -8056,7 +8079,7 @@ void LLPipeline::renderDeferredLighting()
 
                     LLVector4a center;
                     center.load3(drawablep->getPositionAgent().mV);
-                    const F32 *c = center.getF32ptr();
+                    const F32* c = center.getF32ptr();
                     F32        s = volume->getLightRadius() * 1.5f;
 
                     sVisibleLightCount++;
@@ -8105,8 +8128,8 @@ void LLPipeline::renderDeferredLighting()
                         U32 idx = count - 1;
                         bindDeferredShader(gDeferredMultiLightProgram[idx]);
                         gDeferredMultiLightProgram[idx].uniform1i(LLShaderMgr::MULTI_LIGHT_COUNT, count);
-                        gDeferredMultiLightProgram[idx].uniform4fv(LLShaderMgr::MULTI_LIGHT, count, (GLfloat *) light);
-                        gDeferredMultiLightProgram[idx].uniform4fv(LLShaderMgr::MULTI_LIGHT_COL, count, (GLfloat *) col);
+                        gDeferredMultiLightProgram[idx].uniform4fv(LLShaderMgr::MULTI_LIGHT, count, (GLfloat*)light);
+                        gDeferredMultiLightProgram[idx].uniform4fv(LLShaderMgr::MULTI_LIGHT_COL, count, (GLfloat*)col);
                         gDeferredMultiLightProgram[idx].uniform1f(LLShaderMgr::MULTI_LIGHT_FAR_Z, far_z);
                         far_z = 0.f;
                         count = 0;
@@ -8124,11 +8147,11 @@ void LLPipeline::renderDeferredLighting()
 
                 for (LLDrawable::drawable_list_t::iterator iter = fullscreen_spot_lights.begin(); iter != fullscreen_spot_lights.end(); ++iter)
                 {
-                    LLDrawable *drawablep           = *iter;
-                    LLVOVolume *volume              = drawablep->getVOVolume();
-                    LLVector3   center              = drawablep->getPositionAgent();
-                    F32 *       c                   = center.mV;
-                    F32         light_size_final    = volume->getLightRadius() * 1.5f;
+                    LLDrawable* drawablep = *iter;
+                    LLVOVolume* volume = drawablep->getVOVolume();
+                    LLVector3   center = drawablep->getPositionAgent();
+                    F32* c = center.mV;
+                    F32         light_size_final = volume->getLightRadius() * 1.5f;
                     F32         light_falloff_final = volume->getLightFalloff(DEFERRED_LIGHT_FALLOFF);
 
                     sVisibleLightCount++;
@@ -8153,13 +8176,11 @@ void LLPipeline::renderDeferredLighting()
             }
         }
 
-
         gGL.setColorMask(true, true);
     }
 
     {  // render non-deferred geometry (alpha, fullbright, glow)
         LLGLDisable blend(GL_BLEND);
-        //LLGLDisable stencil(GL_STENCIL_TEST);
 
         pushRenderTypeMask();
         andRenderTypeMask(LLPipeline::RENDER_TYPE_ALPHA,
@@ -8210,6 +8231,153 @@ void LLPipeline::renderDeferredLighting()
     gGL.setColorMask(true, true);
 }
 
+void LLPipeline::doAtmospherics()
+{
+    LL_PROFILE_ZONE_SCOPED_CATEGORY_PIPELINE;
+
+    if (sImpostorRender)
+    { // do not attempt atmospherics on impostors
+        return;
+    }
+
+    if (RenderDeferredAtmospheric)
+    {
+        {
+            // copy depth buffer for use in haze shader (use water displacement map as temp storage)
+            LLGLDepthTest depth(GL_TRUE, GL_TRUE, GL_ALWAYS);
+
+            LLRenderTarget& src = gPipeline.mRT->screen;
+            LLRenderTarget& depth_src = gPipeline.mRT->deferredScreen;
+            LLRenderTarget& dst = gPipeline.mWaterDis;
+
+            mRT->screen.flush();
+            dst.bindTarget();
+            gCopyDepthProgram.bind();
+
+            S32 diff_map = gCopyDepthProgram.getTextureChannel(LLShaderMgr::DIFFUSE_MAP);
+            S32 depth_map = gCopyDepthProgram.getTextureChannel(LLShaderMgr::DEFERRED_DEPTH);
+
+            gGL.getTexUnit(diff_map)->bind(&src);
+            gGL.getTexUnit(depth_map)->bind(&depth_src, true);
+
+            gGL.setColorMask(false, false);
+            gPipeline.mScreenTriangleVB->setBuffer();
+            gPipeline.mScreenTriangleVB->drawArrays(LLRender::TRIANGLES, 0, 3);
+
+            dst.flush();
+            mRT->screen.bindTarget();
+        }
+
+        LLGLEnable blend(GL_BLEND);
+        gGL.blendFunc(LLRender::BF_ONE, LLRender::BF_SOURCE_ALPHA, LLRender::BF_ZERO, LLRender::BF_SOURCE_ALPHA);
+        gGL.setColorMask(true, true);
+
+        // apply haze
+        LLGLSLShader& haze_shader = gHazeProgram;
+
+        LL_PROFILE_GPU_ZONE("haze");
+        bindDeferredShader(haze_shader, nullptr, &mWaterDis);
+
+        LLEnvironment& environment = LLEnvironment::instance();
+        haze_shader.uniform1i(LLShaderMgr::SUN_UP_FACTOR, environment.getIsSunUp() ? 1 : 0);
+        haze_shader.uniform3fv(LLShaderMgr::LIGHTNORM, 1, environment.getClampedLightNorm().mV);
+
+        haze_shader.uniform4fv(LLShaderMgr::WATER_WATERPLANE, 1, LLDrawPoolAlpha::sWaterPlane.mV);
+
+        LLGLDepthTest depth(GL_FALSE);
+
+        // full screen blit
+        mScreenTriangleVB->setBuffer();
+        mScreenTriangleVB->drawArrays(LLRender::TRIANGLES, 0, 3);
+    
+        unbindDeferredShader(haze_shader);
+
+        gGL.setSceneBlendType(LLRender::BT_ALPHA);
+    }
+}
+
+void LLPipeline::doWaterHaze()
+{
+    LL_PROFILE_ZONE_SCOPED_CATEGORY_PIPELINE;
+    if (sImpostorRender)
+    { // do not attempt water haze on impostors
+        return;
+    }
+
+    if (RenderDeferredAtmospheric)
+    {
+        // copy depth buffer for use in haze shader (use water displacement map as temp storage)
+        {
+            LLGLDepthTest depth(GL_TRUE, GL_TRUE, GL_ALWAYS);
+
+            LLRenderTarget& src = gPipeline.mRT->screen;
+            LLRenderTarget& depth_src = gPipeline.mRT->deferredScreen;
+            LLRenderTarget& dst = gPipeline.mWaterDis;
+
+            mRT->screen.flush();
+            dst.bindTarget();
+            gCopyDepthProgram.bind();
+
+            S32 diff_map = gCopyDepthProgram.getTextureChannel(LLShaderMgr::DIFFUSE_MAP);
+            S32 depth_map = gCopyDepthProgram.getTextureChannel(LLShaderMgr::DEFERRED_DEPTH);
+
+            gGL.getTexUnit(diff_map)->bind(&src);
+            gGL.getTexUnit(depth_map)->bind(&depth_src, true);
+
+            gGL.setColorMask(false, false);
+            gPipeline.mScreenTriangleVB->setBuffer();
+            gPipeline.mScreenTriangleVB->drawArrays(LLRender::TRIANGLES, 0, 3);
+
+            dst.flush();
+            mRT->screen.bindTarget();
+        }
+
+        LLGLEnable blend(GL_BLEND);
+        gGL.blendFunc(LLRender::BF_ONE, LLRender::BF_SOURCE_ALPHA, LLRender::BF_ZERO, LLRender::BF_SOURCE_ALPHA);
+
+        gGL.setColorMask(true, true);
+
+        // apply haze
+        LLGLSLShader& haze_shader = gHazeWaterProgram;
+
+        LL_PROFILE_GPU_ZONE("haze");
+        bindDeferredShader(haze_shader, nullptr, &mWaterDis);
+
+        haze_shader.uniform4fv(LLShaderMgr::WATER_WATERPLANE, 1, LLDrawPoolAlpha::sWaterPlane.mV);
+
+        static LLStaticHashedString above_water_str("above_water");
+        haze_shader.uniform1i(above_water_str, sUnderWaterRender ? -1 : 1);
+
+        if (LLPipeline::sUnderWaterRender)
+        {
+            LLGLDepthTest depth(GL_FALSE);
+
+            // full screen blit
+            mScreenTriangleVB->setBuffer();
+            mScreenTriangleVB->drawArrays(LLRender::TRIANGLES, 0, 3);
+        }
+        else
+        {
+            //render water patches like LLDrawPoolWater does
+            LLGLDepthTest depth(GL_FALSE);
+            LLGLDisable   cull(GL_CULL_FACE);
+
+            gGLLastMatrix = NULL;
+            gGL.loadMatrix(gGLModelView);
+
+            if (mWaterPool)
+            {
+                mWaterPool->pushFaceGeometry();
+            }
+        }
+
+        unbindDeferredShader(haze_shader);
+
+
+        gGL.setSceneBlendType(LLRender::BT_ALPHA);
+    }
+}
+
 void LLPipeline::setupSpotLight(LLGLSLShader& shader, LLDrawable* drawablep)
 {
 	//construct frustum
diff --git a/indra/newview/pipeline.h b/indra/newview/pipeline.h
index 6e4c9c7a97..88a7eab813 100644
--- a/indra/newview/pipeline.h
+++ b/indra/newview/pipeline.h
@@ -306,7 +306,7 @@ public:
     // if setup is true, wil lset texture compare mode function and filtering options
     void bindShadowMaps(LLGLSLShader& shader);
     void bindDeferredShaderFast(LLGLSLShader& shader);
-	void bindDeferredShader(LLGLSLShader& shader, LLRenderTarget* light_target = nullptr);
+	void bindDeferredShader(LLGLSLShader& shader, LLRenderTarget* light_target = nullptr, LLRenderTarget* depth_target = nullptr);
 	void setupSpotLight(LLGLSLShader& shader, LLDrawable* drawablep);
 
 	void unbindDeferredShader(LLGLSLShader& shader);
@@ -318,6 +318,16 @@ public:
     void unbindReflectionProbes(LLGLSLShader& shader);
 
 	void renderDeferredLighting();
+
+    // apply atmospheric haze based on contents of color and depth buffer
+    // should be called just before rendering water when camera is under water 
+    // and just before rendering alpha when camera is above water
+    void doAtmospherics();
+
+    // apply water haze based on contents of color and depth buffer
+    // should be called just before rendering pre-water alpha objects
+    void doWaterHaze();
+
 	void postDeferredGammaCorrect(LLRenderTarget* screen_target);
 
 	void generateSunShadow(LLCamera& camera);
diff --git a/indra/newview/skins/default/xui/en/floater_snapshot.xml b/indra/newview/skins/default/xui/en/floater_snapshot.xml
index fcd24d83bb..1a1131e24c 100644
--- a/indra/newview/skins/default/xui/en/floater_snapshot.xml
+++ b/indra/newview/skins/default/xui/en/floater_snapshot.xml
@@ -5,7 +5,7 @@
  can_minimize="true"
  can_resize="false"
  can_close="true"
- height="455"
+ height="475"
  layout="topleft"
  name="Snapshot"
  single_instance="true"
@@ -115,7 +115,7 @@
 	   top_delta="0"
        width="31" />
 	<panel
-     height="159"
+     height="179"
      layout="topleft"
 	 follows="top|left"
      left="0"
@@ -193,6 +193,14 @@
          top_pad="1"
          width="180"
          name="auto_snapshot_check" />
+        <check_box
+         label="No post-processing"
+         layout="topleft"
+         height="16"
+         left="10"
+         top_pad="1"
+         width="180"
+         name="no_post_check" />
         <text
          type="string"
          length="1"
@@ -391,8 +399,8 @@
     name="thumbnail_placeholder"
     top="23"
 	left="215"
-	width="400"
-	height="400"
+	width="420"
+	height="420"
     follows="top|left"/>
   <view_border 
    bevel_style="in" 
diff --git a/indra/newview/skins/default/xui/en/menu_viewer.xml b/indra/newview/skins/default/xui/en/menu_viewer.xml
index 6d2768c9ac..3a6cf2ddff 100644
--- a/indra/newview/skins/default/xui/en/menu_viewer.xml
+++ b/indra/newview/skins/default/xui/en/menu_viewer.xml
@@ -1590,7 +1590,7 @@ function="World.EnvPreset"
         <menu_item_separator/>
           
           <menu_item_check
-            label="No Post"
+            label="No Post-processing"
             name="No Post">
             <menu_item_check.on_check
              control="RenderDisablePostProcessing" />
@@ -2207,6 +2207,16 @@ function="World.EnvPreset"
                  function="Advanced.ToggleRenderType"
                  parameter="bump" />
             </menu_item_check>
+            <menu_item_check
+             label="PBR"
+             name="Rendering Type PBR">
+                <menu_item_check.on_check
+                 function="Advanced.CheckRenderType"
+                 parameter="pbr" />
+                <menu_item_check.on_click
+                 function="Advanced.ToggleRenderType"
+                 parameter="pbr" />
+            </menu_item_check>
         </menu>
         <menu
          create_jump_keys="true"
diff --git a/indra/newview/skins/default/xui/en/notifications.xml b/indra/newview/skins/default/xui/en/notifications.xml
index 36538c406b..c2c7a303f6 100644
--- a/indra/newview/skins/default/xui/en/notifications.xml
+++ b/indra/newview/skins/default/xui/en/notifications.xml
@@ -1534,7 +1534,7 @@ Delete pick &lt;nolink&gt;[PICK]&lt;/nolink&gt;?
    icon="alert.tga"
    name="ProfileUnsavedChanges"
    type="alertmodal">
-    You have usaved changes.
+    You have unsaved changes.
     <tag>confirm</tag>
     <tag>save</tag>
     <usetemplate
@@ -6219,7 +6219,7 @@ You must replace those layers before deleting them.
     Delete the image for this item? There is no undo.
     <tag>confirm</tag>
     <usetemplate
-     ignoretext="Don't show me this again"
+     ignoretext="Warn me that thumbnail will be permanently removed"
      name="okcancelignore"
      notext="Cancel"
      yestext="Delete"/>
@@ -7047,6 +7047,19 @@ Please try again.
   </notification>
 
   <notification
+   icon="alertmodal.tga"
+   name="CantSelectReflectionProbe"
+   type="alertmodal">
+    <unique/>
+    You have placed a reflection probe, but 'Select Reflection Probes' is disabled. To be able to select reflection probes, check Build &gt; Options &gt; Select Reflection Probes.
+    <tag>confirm</tag>
+    <usetemplate
+     ignoretext="Warn if Reflection Probes selection is disabled."
+     name="okignore"
+     yestext="OK"/>
+  </notification>
+
+  <notification
    icon="notifytip.tga"
    name="ScriptMissing"
    type="notifytip">