Merge branch 'DRTVWR-559' into marchcat/587-v-pbr-merge

# Conflicts:
#	indra/llcommon/CMakeLists.txt
#	indra/newview/llspatialpartition.cpp
#	indra/newview/llviewergenericmessage.cpp
#	indra/newview/llvoavatar.cpp

9 files changed, 85 insertions, 532 deletions

diff --git a/indra/newview/app_settings/shaders/class1/environment/srgbF.glsl b/indra/newview/app_settings/shaders/class1/environment/srgbF.glsl
index 4a8b892c3a..e3fd10447e 100644
--- a/indra/newview/app_settings/shaders/class1/environment/srgbF.glsl
+++ b/indra/newview/app_settings/shaders/class1/environment/srgbF.glsl
@@ -23,6 +23,8 @@
  * $/LicenseInfo$
  */
 
+ uniform sampler2D exposureMap;
+
 vec3 srgb_to_linear(vec3 cs)
 {
 	vec3 low_range = cs / vec3(12.92);
@@ -72,7 +74,7 @@ vec3 rgb2hsv(vec3 c)
     vec4 q = mix(vec4(p.xyw, c.r), vec4(c.r, p.yzx), step(p.x, c.r));
 
     float d = q.x - min(q.w, q.y);
-    float e = 1.0e-10;
+    float e = 1.0e-3;
     return vec3(abs(q.z + (q.w - q.y) / (6.0 * d + e)), d / (q.x + e), q.x);
 }
 
@@ -82,3 +84,32 @@ vec3 hsv2rgb(vec3 c)
     vec3 p = abs(fract(c.xxx + K.xyz) * 6.0 - K.www);
     return c.z * mix(K.xxx, clamp(p - K.xxx, 0.0, 1.0), c.y);
 }
+
+const mat3 inv_ACESOutputMat = mat3(0.643038, 0.0592687, 0.0059619, 0.311187, 0.931436, 0.063929, 0.0457755, 0.00929492, 0.930118 );
+
+const mat3 inv_ACESInputMat = mat3( 1.76474, -0.147028, -0.0363368, -0.675778, 1.16025, -0.162436, -0.0889633, -0.0132237, 1.19877 );
+
+vec3 inv_RRTAndODTFit(vec3 x)
+{
+    float A = 0.0245786;
+    float B = 0.000090537;
+    float C = 0.983729;
+    float D = 0.4329510;
+    float E = 0.238081;
+
+    return (A - D * x)/(2.0 * (C * x - 1.0)) - sqrt(pow(D * x - A, vec3(2.0)) - 4.0 * (C * x - 1.0) * (B + E * x))/(2.0 * (C * x - 1.0));
+}
+
+// experimental inverse of ACES Hill tonemapping
+vec3 inv_toneMapACES_Hill(vec3 color)
+{
+    color = inv_ACESOutputMat * color;
+
+    // Apply RRT and ODT
+    color = inv_RRTAndODTFit(color);
+
+    color = inv_ACESInputMat * color;
+
+    return color;
+}
+
diff --git a/indra/newview/app_settings/shaders/class1/environment/terrainF.glsl b/indra/newview/app_settings/shaders/class1/environment/terrainF.glsl
deleted file mode 100644
index 6b68ed4169..0000000000
--- a/indra/newview/app_settings/shaders/class1/environment/terrainF.glsl
+++ /dev/null
@@ -1,66 +0,0 @@
-/**
- * @file class1\environment\terrainF.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
- * $/LicenseInfo$
- */
- 
-#ifdef DEFINE_GL_FRAGCOLOR
-out vec4 frag_color;
-#else
-#define frag_color gl_FragColor
-#endif
-
-VARYING vec4 vertex_color;
-VARYING vec4 vary_texcoord0;
-VARYING vec4 vary_texcoord1;
-
-uniform sampler2D detail_0;
-uniform sampler2D detail_1;
-uniform sampler2D detail_2;
-uniform sampler2D detail_3;
-uniform sampler2D alpha_ramp;
-
-vec3 atmosLighting(vec3 light);
-
-vec3 scaleSoftClip(vec3 color);
-
-void main()
-{
-	/// Note: This should duplicate the blending functionality currently used for the terrain rendering.
-	
-	/// TODO Confirm tex coords and bind them appropriately in vert shader.
-	vec4 color0 = texture2D(detail_0, vary_texcoord0.xy);
-	vec4 color1 = texture2D(detail_1, vary_texcoord0.xy);
-	vec4 color2 = texture2D(detail_2, vary_texcoord0.xy);
-	vec4 color3 = texture2D(detail_3, vary_texcoord0.xy);
-
-	float alpha1 = texture2D(alpha_ramp, vary_texcoord0.zw).a;
-	float alpha2 = texture2D(alpha_ramp,vary_texcoord1.xy).a;
-	float alphaFinal = texture2D(alpha_ramp, vary_texcoord1.zw).a;
-	vec4 outColor = mix( mix(color3, color2, alpha2), mix(color1, color0, alpha1), alphaFinal );
-	
-	/// Add WL Components
-	outColor.rgb = atmosLighting(outColor.rgb * vertex_color.rgb);
-	
-	frag_color = vec4(scaleSoftClip(outColor.rgb), 1.0);
-}
-
diff --git a/indra/newview/app_settings/shaders/class1/environment/terrainV.glsl b/indra/newview/app_settings/shaders/class1/environment/terrainV.glsl
deleted file mode 100644
index ef27848d37..0000000000
--- a/indra/newview/app_settings/shaders/class1/environment/terrainV.glsl
+++ /dev/null
@@ -1,88 +0,0 @@
-/**
- * @file class1\environment\terrainV.glsl
- *
- * $LicenseInfo:firstyear=2007&license=viewerlgpl$
- * Second Life Viewer Source Code
- * Copyright (C) 2007, Linden Research, Inc.
- * 
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation;
- * version 2.1 of the License only.
- * 
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * Lesser General Public License for more details.
- * 
- * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
- * 
- * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
- * $/LicenseInfo$
- */
-
-uniform mat3 normal_matrix;
-uniform mat4 texture_matrix0;
-uniform mat4 modelview_matrix;
-uniform mat4 modelview_projection_matrix;
-
-uniform vec4 object_plane_t;
-uniform vec4 object_plane_s;
-
-ATTRIBUTE vec3 position;
-ATTRIBUTE vec3 normal;
-ATTRIBUTE vec2 texcoord0;
-ATTRIBUTE vec2 texcoord1;
-ATTRIBUTE vec4 diffuse_color;
-
-VARYING vec4 vertex_color;
-VARYING vec4 vary_texcoord0;
-VARYING vec4 vary_texcoord1;
-
-void calcAtmospherics(vec3 inPositionEye);
-
-vec4 calcLighting(vec3 pos, vec3 norm, vec4 color);
-
-vec4 texgen_object(vec4  vpos, vec4 tc, mat4 mat, vec4 tp0, vec4 tp1)
-{
-	vec4 tcoord;
-	
-	tcoord.x = dot(vpos, tp0);
-	tcoord.y = dot(vpos, tp1);
-	tcoord.z = tc.z;
-	tcoord.w = tc.w;
-	
-	tcoord = mat * tcoord; 
-	
-	return tcoord; 
-}
-
-void main()
-{
-	//transform vertex
-	gl_Position = modelview_projection_matrix * vec4(position.xyz, 1.0);
-
-	vec4 pos = modelview_matrix * vec4(position.xyz, 1.0);
-	vec3 norm = normalize(normal_matrix * normal);
-
-	calcAtmospherics(pos.xyz);
-
-	/// Potentially better without it for water.
-	pos /= pos.w;
-
-	vec4 color = calcLighting(pos.xyz, norm, /*diffuse_color*/vec4(1));
-	
-	vertex_color = color;
-
-	// Transform and pass tex coords
- 	vary_texcoord0.xy = texgen_object(vec4(position.xyz, 1.0), vec4(texcoord0,0,1), texture_matrix0, object_plane_s, object_plane_t).xy;
-	
-	vec4 t = vec4(texcoord1,0,1);
-	
-	vary_texcoord0.zw = t.xy;
-	vary_texcoord1.xy = t.xy-vec2(2.0, 0.0);
-	vary_texcoord1.zw = t.xy-vec2(1.0, 0.0);
-}
-
diff --git a/indra/newview/app_settings/shaders/class1/environment/terrainWaterF.glsl b/indra/newview/app_settings/shaders/class1/environment/terrainWaterF.glsl
deleted file mode 100644
index e53bb46177..0000000000
--- a/indra/newview/app_settings/shaders/class1/environment/terrainWaterF.glsl
+++ /dev/null
@@ -1,66 +0,0 @@
-/**
- * @file class1\environment\terrainWaterF.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
- * $/LicenseInfo$
- */
-
-#ifdef DEFINE_GL_FRAGCOLOR
-out vec4 frag_color;
-#else
-#define frag_color gl_FragColor
-#endif
-
-VARYING vec4 vertex_color;
-VARYING vec4 vary_texcoord0;
-VARYING vec4 vary_texcoord1;
-
-uniform sampler2D detail_0;
-uniform sampler2D detail_1;
-uniform sampler2D detail_2;
-uniform sampler2D detail_3;
-uniform sampler2D alpha_ramp;
-
-vec3 atmosLighting(vec3 light);
-
-vec4 applyWaterFog(vec4 color);
-
-void main()
-{
-	/// Note: This should duplicate the blending functionality currently used for the terrain rendering.
-	
-	/// TODO Confirm tex coords and bind them appropriately in vert shader.
-	vec4 color0 = texture2D(detail_0, vary_texcoord0.xy);
-	vec4 color1 = texture2D(detail_1, vary_texcoord0.xy);
-	vec4 color2 = texture2D(detail_2, vary_texcoord0.xy);
-	vec4 color3 = texture2D(detail_3, vary_texcoord0.xy);
-
-	float alpha1 = texture2D(alpha_ramp, vary_texcoord0.zw).a;
-	float alpha2 = texture2D(alpha_ramp,vary_texcoord1.xy).a;
-	float alphaFinal = texture2D(alpha_ramp, vary_texcoord1.zw).a;
-	vec4 outColor = mix( mix(color3, color2, alpha2), mix(color1, color0, alpha1), alphaFinal );
-	
-	/// Add WL Components
-	outColor.rgb = atmosLighting(outColor.rgb * vertex_color.rgb);
-	
-	outColor = applyWaterFog(outColor);
-	frag_color = outColor;
-}
diff --git a/indra/newview/app_settings/shaders/class1/environment/terrainWaterV.glsl b/indra/newview/app_settings/shaders/class1/environment/terrainWaterV.glsl
deleted file mode 100644
index a075cfeef2..0000000000
--- a/indra/newview/app_settings/shaders/class1/environment/terrainWaterV.glsl
+++ /dev/null
@@ -1,84 +0,0 @@
-/**
- * @file class1\environment\terrainV.glsl
- *
- * $LicenseInfo:firstyear=2007&license=viewerlgpl$
- * Second Life Viewer Source Code
- * Copyright (C) 2007, Linden Research, Inc.
- * 
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation;
- * version 2.1 of the License only.
- * 
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * Lesser General Public License for more details.
- * 
- * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
- * 
- * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
- * $/LicenseInfo$
- */
-
-uniform mat3 normal_matrix;
-uniform mat4 texture_matrix0;
-uniform mat4 modelview_matrix;
-uniform mat4 modelview_projection_matrix;
-
-uniform vec4 object_plane_t;
-uniform vec4 object_plane_s;
-
-ATTRIBUTE vec3 position;
-ATTRIBUTE vec3 normal;
-ATTRIBUTE vec2 texcoord0;
-ATTRIBUTE vec2 texcoord1;
-ATTRIBUTE vec4 diffuse_color;
-
-VARYING vec4 vertex_color;
-VARYING vec4 vary_texcoord0;
-VARYING vec4 vary_texcoord1;
-
-void calcAtmospherics(vec3 inPositionEye);
-vec4 calcLighting(vec3 pos, vec3 norm, vec4 color);
-
-vec4 texgen_object(vec4  vpos, vec4 tc, mat4 mat, vec4 tp0, vec4 tp1)
-{
-	vec4 tcoord;
-	
-	tcoord.x = dot(vpos, tp0);
-	tcoord.y = dot(vpos, tp1);
-	tcoord.z = tc.z;
-	tcoord.w = tc.w;
-	
-	tcoord = mat * tcoord; 
-	
-	return tcoord; 
-}
-
-void main()
-{
-	//transform vertex
-	gl_Position = modelview_projection_matrix * vec4(position.xyz, 1.0);
-
-	vec4 pos = modelview_matrix * vec4(position.xyz, 1.0);
-	vec3 norm = normalize(normal_matrix * normal);
-
-	calcAtmospherics(pos.xyz);
-
-	vec4 color = calcLighting(pos.xyz, norm, vec4(1.0));
-
-	vertex_color.rgb = color.rgb;
-
-	// Transform and pass tex coords
- 	vary_texcoord0.xy = texgen_object(vec4(position.xyz, 1.0), vec4(texcoord0,0,1), texture_matrix0, object_plane_s, object_plane_t).xy;
-	
-	vec4 t = vec4(texcoord1,0,1);
-	
-	vary_texcoord0.zw = t.xy;
-	vary_texcoord1.xy = t.xy-vec2(2.0, 0.0);
-	vary_texcoord1.zw = t.xy-vec2(1.0, 0.0);
-}
-
diff --git a/indra/newview/app_settings/shaders/class1/environment/underWaterF.glsl b/indra/newview/app_settings/shaders/class1/environment/underWaterF.glsl
deleted file mode 100644
index 8c8bd6d0d5..0000000000
--- a/indra/newview/app_settings/shaders/class1/environment/underWaterF.glsl
+++ /dev/null
@@ -1,77 +0,0 @@
-/**
- * @file class1\environment\underWaterF.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
- * $/LicenseInfo$
- */
- 
-#ifdef DEFINE_GL_FRAGCOLOR
-out vec4 frag_color;
-#else
-#define frag_color gl_FragColor
-#endif
-
-uniform sampler2D diffuseMap;
-uniform sampler2D bumpMap;   
-uniform sampler2D screenTex;
-uniform sampler2D refTex;
-uniform sampler2D screenDepth;
-
-uniform vec4 fogCol;
-uniform vec3 lightDir;
-uniform vec3 specular;
-uniform float lightExp;
-uniform vec2 fbScale;
-uniform float refScale;
-uniform float znear;
-uniform float zfar;
-uniform float kd;
-uniform vec4 waterPlane;
-uniform vec3 eyeVec;
-uniform vec4 waterFogColor;
-uniform float waterFogKS;
-uniform vec2 screenRes;
-
-//bigWave is (refCoord.w, view.w);
-VARYING vec4 refCoord;
-VARYING vec4 littleWave;
-VARYING vec4 view;
-
-vec4 applyWaterFogView(vec3 pos, vec4 color);
-
-void main() 
-{
-	vec4 color;
-	    
-	//get detail normals
-	vec3 wave1 = texture2D(bumpMap, vec2(refCoord.w, view.w)).xyz*2.0-1.0;
-	vec3 wave2 = texture2D(bumpMap, littleWave.xy).xyz*2.0-1.0;
-	vec3 wave3 = texture2D(bumpMap, littleWave.zw).xyz*2.0-1.0;    
-	vec3 wavef = normalize(wave1+wave2+wave3);
-	
-	//figure out distortion vector (ripply)   
-	vec2 distort = (refCoord.xy/refCoord.z) * 0.5 + 0.5;
-	distort = distort+wavef.xy*refScale;
-		
-	vec4 fb = texture2D(screenTex, distort);
-	
-	frag_color = applyWaterFogView(view.xyz, fb);
-}
diff --git a/indra/newview/app_settings/shaders/class1/environment/waterF.glsl b/indra/newview/app_settings/shaders/class1/environment/waterF.glsl
index d370997123..075397d96c 100644
--- a/indra/newview/app_settings/shaders/class1/environment/waterF.glsl
+++ b/indra/newview/app_settings/shaders/class1/environment/waterF.glsl
@@ -1,9 +1,9 @@
 /** 
  * @file waterF.glsl
  *
- * $LicenseInfo:firstyear=2007&license=viewerlgpl$
+ * $LicenseInfo:firstyear=2023&license=viewerlgpl$
  * Second Life Viewer Source Code
- * Copyright (C) 2007, 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
@@ -22,147 +22,13 @@
  * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
  * $/LicenseInfo$
  */
- 
-#ifdef DEFINE_GL_FRAGCOLOR
-out vec4 frag_color;
-#else
-#define frag_color gl_FragColor
-#endif
-
-vec3 scaleSoftClip(vec3 inColor);
-vec3 atmosTransport(vec3 inColor);
-
-uniform sampler2D bumpMap;
-uniform sampler2D bumpMap2;
-uniform float     blend_factor;
-uniform sampler2D screenTex;
-uniform sampler2D refTex;
-
-uniform float sunAngle;
-uniform float sunAngle2;
-uniform vec3 lightDir;
-uniform vec3 specular;
-uniform float lightExp;
-uniform float refScale;
-uniform float kd;
-uniform vec2 screenRes;
-uniform vec3 normScale;
-uniform float fresnelScale;
-uniform float fresnelOffset;
-uniform float blurMultiplier;
-
 
-//bigWave is (refCoord.w, view.w);
-VARYING vec4 refCoord;
-VARYING vec4 littleWave;
-VARYING vec4 view;
-
-vec3 BlendNormal(vec3 bump1, vec3 bump2)
-{
-    vec3 n = mix(bump1, bump2, blend_factor);
-    return n;
-}
+ // error fallback on compilation failure
 
+out vec4 frag_color;
 
-void main() 
+void main()
 {
-	vec4 color;
-	
-	float dist = length(view.xy);
-	
-	//normalize view vector
-	vec3 viewVec = normalize(view.xyz);
-	
-	//get wave normals
-    vec2 bigwave = vec2(refCoord.w, view.w);
-    vec3 wave1_a = texture2D(bumpMap, bigwave      ).xyz*2.0-1.0;
-    vec3 wave2_a = texture2D(bumpMap, littleWave.xy).xyz*2.0-1.0;
-    vec3 wave3_a = texture2D(bumpMap, littleWave.zw).xyz*2.0-1.0;
-
-
-    vec3 wave1_b = texture2D(bumpMap2, bigwave      ).xyz*2.0-1.0;
-    vec3 wave2_b = texture2D(bumpMap2, littleWave.xy).xyz*2.0-1.0;
-    vec3 wave3_b = texture2D(bumpMap2, littleWave.zw).xyz*2.0-1.0;
-
-    vec3 wave1 = BlendNormal(wave1_a, wave1_b);
-    vec3 wave2 = BlendNormal(wave2_a, wave2_b);
-    vec3 wave3 = BlendNormal(wave3_a, wave3_b);
-
-
-	//get base fresnel components	
-	
-	vec3 df = vec3(
-					dot(viewVec, wave1),
-					dot(viewVec, (wave2 + wave3) * 0.5),
-					dot(viewVec, wave3)
-				 ) * fresnelScale + fresnelOffset;
-	df *= df;
-		    
-	vec2 distort = (refCoord.xy/refCoord.z) * 0.5 + 0.5;
-	
-	float dist2 = dist;
-	dist = max(dist, 5.0);
-	
-	float dmod = sqrt(dist);
-	
-	vec2 dmod_scale = vec2(dmod*dmod, dmod);
-	
-	//get reflected color
-	vec2 refdistort1 = wave1.xy*normScale.x;
-	vec2 refvec1 = distort+refdistort1/dmod_scale;
-	vec4 refcol1 = texture2D(refTex, refvec1);
-	
-	vec2 refdistort2 = wave2.xy*normScale.y;
-	vec2 refvec2 = distort+refdistort2/dmod_scale;
-	vec4 refcol2 = texture2D(refTex, refvec2);
-	
-	vec2 refdistort3 = wave3.xy*normScale.z;
-	vec2 refvec3 = distort+refdistort3/dmod_scale;
-	vec4 refcol3 = texture2D(refTex, refvec3);
-
-	vec4 refcol = refcol1 + refcol2 + refcol3;
-	float df1 = df.x + df.y + df.z;
-	refcol *= df1 * 0.333;
-	
-	vec3 wavef = (wave1 + wave2 * 0.4 + wave3 * 0.6) * 0.5;
-	
-	wavef.z *= max(-viewVec.z, 0.1);
-	wavef = normalize(wavef);
-	
-	float df2 = dot(viewVec, wavef) * fresnelScale+fresnelOffset;
-	
-	vec2 refdistort4 = wavef.xy*0.125;
-	refdistort4.y -= abs(refdistort4.y);
-	vec2 refvec4 = distort+refdistort4/dmod;
-	float dweight = min(dist2*blurMultiplier, 1.0);
-	vec4 baseCol = texture2D(refTex, refvec4);
-	refcol = mix(baseCol*df2, refcol, dweight);
-
-	//get specular component
-	float spec = clamp(dot(lightDir, (reflect(viewVec,wavef))),0.0,1.0);
-		
-	//harden specular
-	spec = pow(spec, 128.0);
-
-	//figure out distortion vector (ripply)   
-	vec2 distort2 = distort+wavef.xy*refScale/max(dmod*df1, 1.0);
-		
-	vec4 fb = texture2D(screenTex, distort2);
-	
-	//mix with reflection
-	// Note we actually want to use just df1, but multiplying by 0.999999 gets around and nvidia compiler bug
-	color.rgb = mix(fb.rgb, refcol.rgb, df1 * 0.99999);
-	color.rgb += spec * specular;
-	
-	color.rgb = atmosTransport(color.rgb);
-	color.rgb = scaleSoftClip(color.rgb);
-	color.a = spec * sunAngle2;
-	
-	frag_color = color;
-
-#if defined(WATER_EDGE)
-    gl_FragDepth = 0.9999847f;
-#endif
-	
+    frag_color = vec4(1,0,1,1);
 }
 
diff --git a/indra/newview/app_settings/shaders/class1/environment/waterFogF.glsl b/indra/newview/app_settings/shaders/class1/environment/waterFogF.glsl
index df640cba05..cfdb393b34 100644
--- a/indra/newview/app_settings/shaders/class1/environment/waterFogF.glsl
+++ b/indra/newview/app_settings/shaders/class1/environment/waterFogF.glsl
@@ -32,6 +32,9 @@ uniform float waterFogKS;
 
 vec3 getPositionEye();
 
+vec3 srgb_to_linear(vec3 col);
+vec3 linear_to_srgb(vec3 col);
+
 vec4 applyWaterFogView(vec3 pos, vec4 color)
 {
     vec3 view = normalize(pos);
@@ -66,14 +69,36 @@ vec4 applyWaterFogView(vec3 pos, vec4 color)
     float D = pow(0.98, l*kd);
     
     color.rgb = color.rgb * D + kc.rgb * L;
-    color.a = kc.a + color.a;
 
     return color;
 }
 
+vec4 applyWaterFogViewLinearNoClip(vec3 pos, vec4 color, vec3 sunlit)
+{
+    color.rgb = linear_to_srgb(color.rgb);
+    color = applyWaterFogView(pos, color);
+    color.rgb = srgb_to_linear(color.rgb);
+    return color;
+}
+
+vec4 applyWaterFogViewLinear(vec3 pos, vec4 color, vec3 sunlit)
+{
+    if (dot(pos, waterPlane.xyz) + waterPlane.w > 0.0)
+    {
+        return color;
+    }
+
+    return applyWaterFogViewLinearNoClip(pos, color, sunlit);
+}
+
+vec4 applyWaterFogViewLinear(vec3 pos, vec4 color)
+{
+    return applyWaterFogViewLinear(pos, color, vec3(1));
+}
+
 vec4 applyWaterFog(vec4 color)
 {
     //normalize view vector
-    return applyWaterFogView(getPositionEye(), color);
+    return applyWaterFogViewLinear(getPositionEye(), color);
 }
 
diff --git a/indra/newview/app_settings/shaders/class1/environment/waterV.glsl b/indra/newview/app_settings/shaders/class1/environment/waterV.glsl
index cc41e3f740..5a3845b1a3 100644
--- a/indra/newview/app_settings/shaders/class1/environment/waterV.glsl
+++ b/indra/newview/app_settings/shaders/class1/environment/waterV.glsl
@@ -24,9 +24,10 @@
  */
 
 uniform mat4 modelview_matrix;
+uniform mat3 normal_matrix;
 uniform mat4 modelview_projection_matrix;
 
-ATTRIBUTE vec3 position;
+in vec3 position;
 
 
 void calcAtmospherics(vec3 inPositionEye);
@@ -36,10 +37,16 @@ uniform vec2 waveDir2;
 uniform float time;
 uniform vec3 eyeVec;
 uniform float waterHeight;
+uniform vec3 lightDir;
 
-VARYING vec4 refCoord;
-VARYING vec4 littleWave;
-VARYING vec4 view;
+out vec4 refCoord;
+out vec4 littleWave;
+out vec4 view;
+out vec3 vary_position;
+out vec3 vary_light_dir;
+out vec3 vary_tangent;
+out vec3 vary_normal;
+out vec2 vary_fragcoord;
 
 float wave(vec2 v, float t, float f, vec2 d, float s) 
 {
@@ -52,6 +59,11 @@ void main()
 	vec4 pos = vec4(position.xyz, 1.0);
 	mat4 modelViewProj = modelview_projection_matrix;
 	
+    vary_position = (modelview_matrix * pos).xyz;
+    vary_light_dir = normal_matrix * lightDir;
+    vary_normal = normal_matrix * vec3(0, 0, 1);
+    vary_tangent = normal_matrix * vec3(1, 0, 0);
+
 	vec4 oPosition;
 		    
 	//get view vector
@@ -63,12 +75,13 @@ void main()
 	
 	pos.xy = eyeVec.xy + oEyeVec.xy/d*ld;
 	view.xyz = oEyeVec;
-		
+
 	d = clamp(ld/1536.0-0.5, 0.0, 1.0);	
 	d *= d;
 		
 	oPosition = vec4(position, 1.0);
-	oPosition.z = mix(oPosition.z, max(eyeVec.z*0.75, 0.0), d);
+//	oPosition.z = mix(oPosition.z, max(eyeVec.z*0.75, 0.0), d); // SL-11589 remove "U" shaped horizon
+
 	oPosition = modelViewProj * oPosition;
 	
 	refCoord.xyz = oPosition.xyz + vec3(0,0,0.2);
@@ -83,8 +96,7 @@ void main()
 	pos = modelview_matrix*pos;
 	
 	calcAtmospherics(pos.xyz);
-	
-	
+		
 	//pass wave parameters to pixel shader
 	vec2 bigWave =  (v.xy) * vec2(0.04,0.04)  + waveDir1 * time * 0.055;
 	//get two normal map (detail map) texture coordinates