Merge tag '7.1.8-release'

source for viewer 7.1.8.9375512768

12 files changed, 240 insertions, 168 deletions

diff --git a/indra/newview/app_settings/shaders/class3/deferred/fullbrightShinyF.glsl b/indra/newview/app_settings/shaders/class3/deferred/fullbrightShinyF.glsl
index 22408387b1..03dc3d7113 100644
--- a/indra/newview/app_settings/shaders/class3/deferred/fullbrightShinyF.glsl
+++ b/indra/newview/app_settings/shaders/class3/deferred/fullbrightShinyF.glsl
@@ -53,8 +53,11 @@ void sampleReflectionProbesLegacy(inout vec3 ambenv, inout vec3 glossenv, inout
 
 void applyLegacyEnv(inout vec3 color, vec3 legacyenv, vec4 spec, vec3 pos, vec3 norm, float envIntensity);
 
+void mirrorClip(vec3 pos);
+
 void main()
 {
+    mirrorClip(vary_position);
 #ifdef HAS_DIFFUSE_LOOKUP
     vec4 color = diffuseLookup(vary_texcoord0.xy);
 #else
diff --git a/indra/newview/app_settings/shaders/class3/deferred/hazeF.glsl b/indra/newview/app_settings/shaders/class3/deferred/hazeF.glsl
index 7f75b16cf0..4af57e3b80 100644
--- a/indra/newview/app_settings/shaders/class3/deferred/hazeF.glsl
+++ b/indra/newview/app_settings/shaders/class3/deferred/hazeF.glsl
@@ -33,7 +33,7 @@ uniform vec3 moon_dir;
 uniform int  sun_up_factor;
 in vec2 vary_fragcoord;
 
-vec3 getNorm(vec2 pos_screen);
+vec4 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);
 
@@ -53,8 +53,7 @@ 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);
+    vec4  norm         = getNorm(tc);
     vec3  light_dir   = (sun_up_factor == 1) ? sun_dir : moon_dir;
 
     vec3  color = vec3(0);
@@ -68,16 +67,16 @@ void main()
     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);
 
@@ -102,5 +101,5 @@ void main()
     }
 
     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 20f063fe3e..d3e19cf4a8 100644
--- a/indra/newview/app_settings/shaders/class3/deferred/materialF.glsl
+++ b/indra/newview/app_settings/shaders/class3/deferred/materialF.glsl
@@ -45,6 +45,13 @@ void calcHalfVectors(vec3 lv, vec3 n, vec3 v, out vec3 h, out vec3 l, out float
 vec3 srgb_to_linear(vec3 cs);
 vec3 linear_to_srgb(vec3 cs);
 
+uniform mat4 modelview_matrix;
+uniform mat3 normal_matrix;
+
+in vec3 vary_position;
+
+void mirrorClip(vec3 pos);
+
 #if (DIFFUSE_ALPHA_MODE == DIFFUSE_ALPHA_MODE_BLEND)
 
 out vec4 frag_color;
@@ -66,12 +73,12 @@ uniform vec4 morphFactor;
 uniform vec3 camPosLocal;
 uniform mat3 env_mat;
 
+uniform float is_mirror;
+
 uniform vec3 sun_dir;
 uniform vec3 moon_dir;
 in vec2 vary_fragcoord;
 
-in vec3 vary_position;
-
 uniform mat4 proj_mat;
 uniform mat4 inv_proj;
 uniform vec2 screen_res;
@@ -209,8 +216,6 @@ in vec3 vary_normal;
 in vec4 vertex_color;
 in vec2 vary_texcoord0;
 
-vec2 encode_normal(vec3 n);
-
 // get the transformed normal and apply glossiness component from normal map
 vec3 getNormal(inout float glossiness)
 {
@@ -285,12 +290,12 @@ float getShadow(vec3 pos, vec3 norm)
 
 void main()
 {
+    mirrorClip(vary_position);
     waterClip();
 
     // diffcol == diffuse map combined with vertex color
     vec4 diffcol = texture(diffuseMap, vary_texcoord0.xy);
     diffcol.rgb *= vertex_color.rgb;
-
     alphaMask(diffcol.a);
 
     // spec == specular map combined with specular color
@@ -299,8 +304,6 @@ void main()
     float glossiness = specular_color.a;
     vec3 norm = getNormal(glossiness);
 
-    vec2 abnormal = encode_normal(norm.xyz);
-
     float emissive = getEmissive(diffcol);
 
 #if (DIFFUSE_ALPHA_MODE == DIFFUSE_ALPHA_MODE_BLEND)
@@ -407,10 +410,15 @@ void main()
 
 #else // mode is not DIFFUSE_ALPHA_MODE_BLEND, encode to gbuffer
     // deferred path               // See: C++: addDeferredAttachment(), shader: softenLightF.glsl
-    frag_data[0] = vec4(diffcol.rgb, emissive);        // gbuffer is sRGB for legacy materials
-    frag_data[1] = vec4(spec.rgb, glossiness);           // XYZ = Specular color. W = Specular exponent.
-    frag_data[2] = vec4(encode_normal(norm), env, GBUFFER_FLAG_HAS_ATMOS);;   // XY = Normal.  Z = Env. intensity. W = 1 skip atmos (mask off fog)
-    frag_data[3] = vec4(0);
+
+    float flag = GBUFFER_FLAG_HAS_ATMOS;
+
+    frag_data[0] = max(vec4(diffcol.rgb, emissive), vec4(0));        // gbuffer is sRGB for legacy materials
+    frag_data[1] = max(vec4(spec.rgb, glossiness), vec4(0));           // XYZ = Specular color. W = Specular exponent.
+    frag_data[2] = vec4(norm, flag);   // XY = Normal.  Z = Env. intensity. W = 1 skip atmos (mask off fog)
+    frag_data[3] = vec4(env, 0, 0, 0);
+
 #endif
 }
 
+
diff --git a/indra/newview/app_settings/shaders/class3/deferred/multiPointLightF.glsl b/indra/newview/app_settings/shaders/class3/deferred/multiPointLightF.glsl
index 31aca8a745..edfd6cbced 100644
--- a/indra/newview/app_settings/shaders/class3/deferred/multiPointLightF.glsl
+++ b/indra/newview/app_settings/shaders/class3/deferred/multiPointLightF.glsl
@@ -48,7 +48,7 @@ in vec4 vary_fragcoord;
 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);
 vec4 getPosition(vec2 pos_screen);
-vec4 getNormalEnvIntensityFlags(vec2 screenpos, out vec3 n, out float envIntensity);
+vec4 getNorm(vec2 screenpos);
 vec2 getScreenXY(vec4 clip);
 vec2 getScreenCoord(vec4 clip);
 vec3 srgb_to_linear(vec3 c);
@@ -56,8 +56,8 @@ vec3 srgb_to_linear(vec3 c);
 // Util
 vec3 hue_to_rgb(float hue);
 
-vec3 pbrPunctual(vec3 diffuseColor, vec3 specularColor,
-                    float perceptualRoughness,
+vec3 pbrPunctual(vec3 diffuseColor, vec3 specularColor, 
+                    float perceptualRoughness, 
                     float metallic,
                     vec3 n, // normal
                     vec3 v, // surface point to camera
@@ -74,9 +74,8 @@ void main()
         discard;
     }
 
-    float envIntensity; // not used for this shader
-    vec3 n;
-    vec4 norm = getNormalEnvIntensityFlags(tc, n, envIntensity); // need `norm.w` for GET_GBUFFER_FLAG()
+    vec4 norm = getNorm(tc); // need `norm.w` for GET_GBUFFER_FLAG()
+    vec3 n = norm.xyz;
 
     vec4 spec    = texture(specularRect, tc);
     vec3 diffuse = texture(diffuseRect, tc).rgb;
@@ -92,7 +91,7 @@ void main()
         float metallic = orm.b;
         vec3 f0 = vec3(0.04);
         vec3 baseColor = diffuse.rgb;
-
+        
         vec3 diffuseColor = baseColor.rgb*(vec3(1.0)-f0);
         diffuseColor *= 1.0 - metallic;
 
diff --git a/indra/newview/app_settings/shaders/class3/deferred/pointLightF.glsl b/indra/newview/app_settings/shaders/class3/deferred/pointLightF.glsl
index c27310cf89..60be9f4407 100644
--- a/indra/newview/app_settings/shaders/class3/deferred/pointLightF.glsl
+++ b/indra/newview/app_settings/shaders/class3/deferred/pointLightF.glsl
@@ -1,28 +1,28 @@
-/**
+/** 
  * @file class3\deferred\pointLightF.glsl
  *
  * $LicenseInfo:firstyear=2022&license=viewerlgpl$
  * Second Life Viewer Source Code
  * Copyright (C) 2022, 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
  * $/LicenseInfo$
  */
-
+ 
 /*[EXTRA_CODE_HERE]*/
 
 out vec4 frag_color;
@@ -52,15 +52,15 @@ uniform vec4 viewport;
 
 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);
-vec4 getNormalEnvIntensityFlags(vec2 screenpos, out vec3 n, out float envIntensity);
+vec4 getNorm(vec2 screenpos);
 vec4 getPosition(vec2 pos_screen);
 vec2 getScreenXY(vec4 clip);
 vec2 getScreenCoord(vec4 clip);
 vec3 srgb_to_linear(vec3 c);
 float getDepth(vec2 tc);
 
-vec3 pbrPunctual(vec3 diffuseColor, vec3 specularColor,
-                    float perceptualRoughness,
+vec3 pbrPunctual(vec3 diffuseColor, vec3 specularColor, 
+                    float perceptualRoughness, 
                     float metallic,
                     vec3 n, // normal
                     vec3 v, // surface point to camera
@@ -72,9 +72,8 @@ void main()
     vec2 tc          = getScreenCoord(vary_fragcoord);
     vec3 pos         = getPosition(tc).xyz;
 
-    float envIntensity;
-    vec3 n;
-    vec4 norm = getNormalEnvIntensityFlags(tc, n, envIntensity); // need `norm.w` for GET_GBUFFER_FLAG()
+    vec4 norm = getNorm(tc); // need `norm.w` for GET_GBUFFER_FLAG()
+    vec3 n = norm.xyz;
 
     vec3 diffuse = texture(diffuseRect, tc).rgb;
     vec4 spec    = texture(specularRect, tc);
@@ -94,13 +93,13 @@ void main()
 
     if (GET_GBUFFER_FLAG(GBUFFER_FLAG_HAS_PBR))
     {
-        vec3 colorEmissive = texture(emissiveRect, tc).rgb;
+        vec3 colorEmissive = texture(emissiveRect, tc).rgb; 
         vec3 orm = spec.rgb;
         float perceptualRoughness = orm.g;
         float metallic = orm.b;
         vec3 f0 = vec3(0.04);
         vec3 baseColor = diffuse.rgb;
-
+        
         vec3 diffuseColor = baseColor.rgb*(vec3(1.0)-f0);
         diffuseColor *= 1.0 - metallic;
 
@@ -137,7 +136,7 @@ void main()
                 final_color += lit*scol*color.rgb*spec.rgb;
             }
         }
-
+    
         if (dot(final_color, final_color) <= 0.0)
         {
             discard;
diff --git a/indra/newview/app_settings/shaders/class3/deferred/reflectionProbeF.glsl b/indra/newview/app_settings/shaders/class3/deferred/reflectionProbeF.glsl
index ae81a4b472..90c84cc428 100644
--- a/indra/newview/app_settings/shaders/class3/deferred/reflectionProbeF.glsl
+++ b/indra/newview/app_settings/shaders/class3/deferred/reflectionProbeF.glsl
@@ -31,6 +31,7 @@ float tapScreenSpaceReflection(int totalSamples, vec2 tc, vec3 viewPos, vec3 n,
 
 uniform samplerCubeArray   reflectionProbes;
 uniform samplerCubeArray   irradianceProbes;
+
 uniform sampler2D sceneMap;
 uniform int cube_snapshot;
 uniform float max_probe_lod;
@@ -47,14 +48,16 @@ layout (std140) uniform ReflectionProbes
     /// box[0..2] - plane 0 .. 2 in [A,B,C,D] notation
     //  box[3][0..2] - plane thickness
     mat4 refBox[MAX_REFMAP_COUNT];
+    mat4 heroBox;
     // list of bounding spheres for reflection probes sorted by distance to camera (closest first)
     vec4 refSphere[MAX_REFMAP_COUNT];
-    // extra parameters
+    // extra parameters 
     //  x - irradiance scale
     //  y - radiance scale
     //  z - fade in
     //  w - znear
     vec4 refParams[MAX_REFMAP_COUNT];
+    vec4 heroSphere;
     // index  of cube map in reflectionProbes for a corresponding reflection probe
     // e.g. cube map channel of refSphere[2] is stored in refIndex[2]
     // refIndex.x - cubemap channel in reflectionProbes
@@ -70,6 +73,10 @@ layout (std140) uniform ReflectionProbes
 
     // number of reflection probes present in refSphere
     int refmapCount;
+
+    int heroShape;
+    int heroMipCount;
+    int heroProbeCount;
 };
 
 // Inputs
@@ -95,7 +102,7 @@ bool shouldSampleProbe(int i, vec3 pos)
     if (refIndex[i].w < 0)
     {
         vec4 v = refBox[i] * vec4(pos, 1.0);
-        if (abs(v.x) > 1 ||
+        if (abs(v.x) > 1 || 
             abs(v.y) > 1 ||
             abs(v.z) > 1)
         {
@@ -222,7 +229,7 @@ void preProbeSample(vec3 pos)
                         }
                     }
                     count++;
-
+                    
                     ++neighborIdx;
                 }
 
@@ -244,56 +251,56 @@ void preProbeSample(vec3 pos)
 
 // original reference implementation:
 /*
-bool intersect(const Ray &ray) const
-{
-        float t0, t1; // solutions for t if the ray intersects
-#if 0
+bool intersect(const Ray &ray) const 
+{ 
+        float t0, t1; // solutions for t if the ray intersects 
+#if 0 
         // geometric solution
-        Vec3f L = center - orig;
-        float tca = L.dotProduct(dir);
+        Vec3f L = center - orig; 
+        float tca = L.dotProduct(dir); 
         // if (tca < 0) return false;
-        float d2 = L.dotProduct(L) - tca * tca;
-        if (d2 > radius2) return false;
-        float thc = sqrt(radius2 - d2);
-        t0 = tca - thc;
-        t1 = tca + thc;
-#else
+        float d2 = L.dotProduct(L) - tca * tca; 
+        if (d2 > radius2) return false; 
+        float thc = sqrt(radius2 - d2); 
+        t0 = tca - thc; 
+        t1 = tca + thc; 
+#else 
         // analytic solution
-        Vec3f L = orig - center;
-        float a = dir.dotProduct(dir);
-        float b = 2 * dir.dotProduct(L);
-        float c = L.dotProduct(L) - radius2;
-        if (!solveQuadratic(a, b, c, t0, t1)) return false;
-#endif
-        if (t0 > t1) std::swap(t0, t1);
-
-        if (t0 < 0) {
-            t0 = t1; // if t0 is negative, let's use t1 instead
-            if (t0 < 0) return false; // both t0 and t1 are negative
-        }
-
-        t = t0;
-
-        return true;
+        Vec3f L = orig - center; 
+        float a = dir.dotProduct(dir); 
+        float b = 2 * dir.dotProduct(L); 
+        float c = L.dotProduct(L) - radius2; 
+        if (!solveQuadratic(a, b, c, t0, t1)) return false; 
+#endif 
+        if (t0 > t1) std::swap(t0, t1); 
+ 
+        if (t0 < 0) { 
+            t0 = t1; // if t0 is negative, let's use t1 instead 
+            if (t0 < 0) return false; // both t0 and t1 are negative 
+        } 
+ 
+        t = t0; 
+ 
+        return true; 
 } */
 
 // adapted -- assume that origin is inside sphere, return intersection of ray with edge of sphere
 vec3 sphereIntersect(vec3 origin, vec3 dir, vec3 center, float radius2)
-{
-        float t0, t1; // solutions for t if the ray intersects
+{ 
+        float t0, t1; // solutions for t if the ray intersects 
 
-        vec3 L = center - origin;
+        vec3 L = center - origin; 
         float tca = dot(L,dir);
 
-        float d2 = dot(L,L) - tca * tca;
-
-        float thc = sqrt(radius2 - d2);
-        t0 = tca - thc;
-        t1 = tca + thc;
+        float d2 = dot(L,L) - tca * tca; 
 
+        float thc = sqrt(radius2 - d2); 
+        t0 = tca - thc; 
+        t1 = tca + thc; 
+ 
         vec3 v = origin + dir * t1;
-        return v;
-}
+        return v; 
+} 
 
 void swap(inout float a, inout float b)
 {
@@ -305,17 +312,17 @@ void swap(inout float a, inout float b)
 // debug implementation, make no assumptions about origin
 void sphereIntersectDebug(vec3 origin, vec3 dir, vec3 center, float radius2, float depth, inout vec4 col)
 {
-    float t[2]; // solutions for t if the ray intersects
+    float t[2]; // solutions for t if the ray intersects 
 
     // geometric solution
-    vec3 L = center - origin;
+    vec3 L = center - origin; 
     float tca = dot(L, dir);
     // if (tca < 0) return false;
-    float d2 = dot(L, L) - tca * tca;
-    if (d2 > radius2) return;
-    float thc = sqrt(radius2 - d2);
-    t[0] = tca - thc;
-    t[1] = tca + thc;
+    float d2 = dot(L, L) - tca * tca; 
+    if (d2 > radius2) return; 
+    float thc = sqrt(radius2 - d2); 
+    t[0] = tca - thc; 
+    t[1] = tca + thc; 
 
     for (int i = 0; i < 2; ++i)
     {
@@ -365,11 +372,11 @@ return texCUBE(envMap, ReflDirectionWS);
 // i - probe index in refBox/refSphere
 // d - distance to nearest wall in clip space
 // scale - scale of box, default 1.0
-vec3 boxIntersect(vec3 origin, vec3 dir, int i, out float d, float scale)
+vec3 boxIntersect(vec3 origin, vec3 dir, mat4 i, out float d, float scale)
 {
     // Intersection with OBB convert to unit box space
     // Transform in local unit parallax cube space (scaled and rotated)
-    mat4 clipToLocal = refBox[i];
+    mat4 clipToLocal = i;
 
     vec3 RayLS = mat3(clipToLocal) * dir;
     vec3 PositionLS = (clipToLocal * vec4(origin, 1.0)).xyz;
@@ -388,7 +395,7 @@ vec3 boxIntersect(vec3 origin, vec3 dir, int i, out float d, float scale)
     return IntersectPositionCS;
 }
 
-vec3 boxIntersect(vec3 origin, vec3 dir, int i, out float d)
+vec3 boxIntersect(vec3 origin, vec3 dir, mat4 i, out float d)
 {
     return boxIntersect(origin, dir, i, d, 1.0);
 }
@@ -404,8 +411,8 @@ void debugBoxCol(vec3 ro, vec3 rd, float t, vec3 p, inout vec4 col)
     bool behind = dot(v,v) > dot(pos,pos);
 
     float w = 0.25;
-
-    if (behind)
+   
+    if (behind) 
     {
         w *= 0.5;
         w /= (length(v)-length(pos))*0.5+1.0;
@@ -419,7 +426,7 @@ void debugBoxCol(vec3 ro, vec3 rd, float t, vec3 p, inout vec4 col)
 
 // cribbed from https://iquilezles.org/articles/intersectors/
 // axis aligned box centered at the origin, with size boxSize
-void boxIntersectionDebug( in vec3 ro, in vec3 p, vec3 boxSize, inout vec4 col)
+void boxIntersectionDebug( in vec3 ro, in vec3 p, vec3 boxSize, inout vec4 col) 
 {
     vec3 rd = normalize(p-ro);
 
@@ -443,10 +450,10 @@ void boxIntersectionDebug( in vec3 ro, in vec3 p, vec3 boxSize, inout vec4 col)
 }
 
 
-void boxIntersectDebug(vec3 origin, vec3 pos, int i, inout vec4 col)
+void boxIntersectDebug(vec3 origin, vec3 pos, mat4 i, inout vec4 col)
 {
-    mat4 clipToLocal = refBox[i];
-
+    mat4 clipToLocal = i;
+    
     // transform into unit cube space
     origin = (clipToLocal * vec4(origin, 1.0)).xyz;
     pos = (clipToLocal * vec4(pos, 1.0)).xyz;
@@ -462,16 +469,16 @@ void boxIntersectDebug(vec3 origin, vec3 pos, int i, inout vec4 col)
 //  r - radius of probe influence volume
 // i - index of probe in refSphere
 // dw - distance weight
-float sphereWeight(vec3 pos, vec3 dir, vec3 origin, float r, int i, out float dw)
+float sphereWeight(vec3 pos, vec3 dir, vec3 origin, float r, vec4 i, out float dw)
 {
-    float r1 = r * 0.5; // 50% of radius (outer sphere to start interpolating down)
+    float r1 = r * 0.5; // 50% of radius (outer sphere to start interpolating down) 
     vec3 delta = pos.xyz - origin;
     float d2 = max(length(delta), 0.001);
 
     float atten = 1.0 - max(d2 - r1, 0.0) / max((r - r1), 0.001);
     float w = 1.0 / d2;
 
-    w *= refParams[i].z;
+    w *= i.z;
 
     dw = w * atten * max(r, 1.0)*4;
 
@@ -488,7 +495,7 @@ float sphereWeight(vec3 pos, vec3 dir, vec3 origin, float r, int i, out float dw
 // lod - which mip to sample (lower is higher res, sharper reflections)
 // c - center of probe
 // r2 - radius of probe squared
-// i - index of probe
+// i - index of probe 
 vec3 tapRefMap(vec3 pos, vec3 dir, out float w, out float dw, float lod, vec3 c, int i)
 {
     // parallax adjustment
@@ -497,7 +504,7 @@ vec3 tapRefMap(vec3 pos, vec3 dir, out float w, out float dw, float lod, vec3 c,
     if (refIndex[i].w < 0)
     {  // box probe
         float d = 0;
-        v = boxIntersect(pos, dir, i, d);
+        v = boxIntersect(pos, dir, refBox[i], d);
 
         w = max(d, 0.001);
     }
@@ -507,18 +514,18 @@ vec3 tapRefMap(vec3 pos, vec3 dir, out float w, out float dw, float lod, vec3 c,
 
         float rr = r * r;
 
-        v = sphereIntersect(pos, dir, c,
+        v = sphereIntersect(pos, dir, c, 
         refIndex[i].w < 1 ? 4096.0*4096.0 : // <== effectively disable parallax correction for automatically placed probes to keep from bombing the world with obvious spheres
                 rr);
 
-        w = sphereWeight(pos, dir, refSphere[i].xyz, r, i, dw);
+        w = sphereWeight(pos, dir, refSphere[i].xyz, r, refParams[i], dw);
     }
 
     v -= c;
     vec3 d = normalize(v);
 
     v = env_mat * v;
-
+    
     vec4 ret = textureLod(reflectionProbes, vec4(v.xyz, refIndex[i].x), lod) * refParams[i].y;
 
     return ret.rgb;
@@ -529,7 +536,7 @@ vec3 tapRefMap(vec3 pos, vec3 dir, out float w, out float dw, float lod, vec3 c,
 // dir - pixel normal
 // w - weight of sample (distance and angular attenuation)
 // dw - weight of sample (distance only)
-// i - index of probe
+// i - index of probe 
 vec3 tapIrradianceMap(vec3 pos, vec3 dir, out float w, out float dw, vec3 c, int i, vec3 amblit)
 {
     // parallax adjustment
@@ -537,7 +544,7 @@ vec3 tapIrradianceMap(vec3 pos, vec3 dir, out float w, out float dw, vec3 c, int
     if (refIndex[i].w < 0)
     {
         float d = 0.0;
-        v = boxIntersect(pos, dir, i, d, 3.0);
+        v = boxIntersect(pos, dir, refBox[i], d, 3.0);
         w = max(d, 0.001);
     }
     else
@@ -547,16 +554,16 @@ vec3 tapIrradianceMap(vec3 pos, vec3 dir, out float w, out float dw, vec3 c, int
         // pad sphere for manual probe extending into automatic probe space
         float rr = r * r;
 
-        v = sphereIntersect(pos, dir, c,
+        v = sphereIntersect(pos, dir, c, 
         refIndex[i].w < 1 ? 4096.0*4096.0 : // <== effectively disable parallax correction for automatically placed probes to keep from bombing the world with obvious spheres
                 rr);
 
-        w = sphereWeight(pos, dir, refSphere[i].xyz, r, i, dw);
+        w = sphereWeight(pos, dir, refSphere[i].xyz, r, refParams[i], dw);
     }
 
     v -= c;
     v = env_mat * v;
-
+    
     vec3 col = textureLod(irradianceProbes, vec4(v.xyz, refIndex[i].x), 0).rgb * refParams[i].x;
 
     col = mix(amblit, col, min(refParams[i].x, 1.0));
@@ -618,7 +625,7 @@ vec3 sampleProbes(vec3 pos, vec3 dir, float lod)
         col[1] *= 1.0/wsum[1];
         col[0] = vec3(0);
     }
-
+    
     return col[1]+col[0];
 }
 
@@ -647,7 +654,7 @@ vec3 sampleProbeAmbient(vec3 pos, vec3 dir, vec3 amblit)
         {
             continue;
         }
-
+        
         {
             float w = 0;
             float dw = 0;
@@ -677,10 +684,53 @@ vec3 sampleProbeAmbient(vec3 pos, vec3 dir, vec3 amblit)
         col[1] *= 1.0/wsum[1];
         col[0] = vec3(0);
     }
-
+    
     return col[1]+col[0];
 }
 
+#if defined(HERO_PROBES)
+
+uniform vec4 clipPlane;
+uniform samplerCubeArray   heroProbes;
+
+void tapHeroProbe(inout vec3 glossenv, vec3 pos, vec3 norm, float glossiness)
+{
+    float clipDist = dot(pos.xyz, clipPlane.xyz) + clipPlane.w;
+    float w = 0;
+    float dw = 0;
+    float falloffMult = 10;
+    vec3 refnormpersp = reflect(pos.xyz, norm.xyz);
+    if (heroShape < 1)
+    {
+        float d = 0;
+        boxIntersect(pos, norm, heroBox, d, 1.0);
+        
+        w = max(d, 0);
+    }
+    else
+    {
+        float r = heroSphere.w;
+        
+        w = sphereWeight(pos, refnormpersp, heroSphere.xyz, r, vec4(1), dw);
+    }
+
+    clipDist = clipDist * 0.95 + 0.05;
+    clipDist = clamp(clipDist * falloffMult, 0, 1);
+    w = clamp(w * falloffMult * clipDist, 0, 1);
+    w = mix(0, w, clamp(glossiness - 0.75, 0, 1) * 4); // We only generate a quarter of the mips for the hero probes.  Linearly interpolate between normal probes and hero probes based upon glossiness.
+    glossenv = mix(glossenv, textureLod(heroProbes, vec4(env_mat * refnormpersp, 0), (1.0-glossiness)*heroMipCount).xyz, w);
+}
+
+#else
+
+void tapHeroProbe(inout vec3 glossenv, vec3 pos, vec3 norm, float glossiness)
+{
+}
+
+#endif
+
+
+
 void doProbeSample(inout vec3 ambenv, inout vec3 glossenv,
         vec2 tc, vec3 pos, vec3 norm, float glossiness, bool transparent, vec3 amblit)
 {
@@ -712,6 +762,8 @@ void doProbeSample(inout vec3 ambenv, inout vec3 glossenv,
         glossenv = mix(glossenv, ssr.rgb, ssr.a);
     }
 #endif
+
+    tapHeroProbe(glossenv, pos, norm, glossiness);
 }
 
 void sampleReflectionProbes(inout vec3 ambenv, inout vec3 glossenv,
@@ -747,7 +799,7 @@ void debugTapRefMap(vec3 pos, vec3 dir, float depth, int i, inout vec4 col)
     {
         if (refIndex[i].w < 0)
         {
-            boxIntersectDebug(origin, pos, i, col);
+            boxIntersectDebug(origin, pos, refBox[i], col);
         }
         else
         {
@@ -799,8 +851,9 @@ void sampleReflectionProbesLegacy(inout vec3 ambenv, inout vec3 glossenv, inout
     {
         float lod = (1.0-glossiness)*reflection_lods;
         glossenv = sampleProbes(pos, normalize(refnormpersp), lod);
+        
     }
-
+    
     if (envIntensity > 0.0)
     {
         legacyenv = sampleProbes(pos, normalize(refnormpersp), 0.0);
@@ -826,6 +879,9 @@ void sampleReflectionProbesLegacy(inout vec3 ambenv, inout vec3 glossenv, inout
     }
 #endif
 
+    tapHeroProbe(glossenv, pos, norm, glossiness);
+    tapHeroProbe(legacyenv, pos, norm, 1.0);
+
     glossenv = clamp(glossenv, vec3(0), vec3(10));
 }
 
diff --git a/indra/newview/app_settings/shaders/class3/deferred/screenSpaceReflPostF.glsl b/indra/newview/app_settings/shaders/class3/deferred/screenSpaceReflPostF.glsl
index 63fa4ecc55..deb276ef9d 100644
--- a/indra/newview/app_settings/shaders/class3/deferred/screenSpaceReflPostF.glsl
+++ b/indra/newview/app_settings/shaders/class3/deferred/screenSpaceReflPostF.glsl
@@ -40,36 +40,33 @@ uniform sampler2D specularRect;
 uniform sampler2D diffuseRect;
 uniform sampler2D diffuseMap;
 
-vec3 getNorm(vec2 screenpos);
+vec4 getNorm(vec2 screenpos);
 float getDepth(vec2 pos_screen);
 float linearDepth(float d, float znear, float zfar);
 float linearDepth01(float d, float znear, float zfar);
 
 vec4 getPositionWithDepth(vec2 pos_screen, float depth);
 vec4 getPosition(vec2 pos_screen);
-vec4 getNormalEnvIntensityFlags(vec2 screenpos, out vec3 n, out float envIntensity);
 
 float random (vec2 uv);
 
 float tapScreenSpaceReflection(int totalSamples, vec2 tc, vec3 viewPos, vec3 n, inout vec4 collectedColor, sampler2D source, float glossiness);
 
-void main()
+void main() 
 {
     vec2  tc = vary_fragcoord.xy;
     float depth = linearDepth01(getDepth(tc), zNear, zFar);
-    float envIntensity;
-    vec3 n;
-    vec4 norm = getNormalEnvIntensityFlags(tc, n, envIntensity); // need `norm.w` for GET_GBUFFER_FLAG()
+    vec4 norm = getNorm(tc); // need `norm.w` for GET_GBUFFER_FLAG()
     vec3 pos = getPositionWithDepth(tc, getDepth(tc)).xyz;
     vec4 spec    = texture(specularRect, tc);
     vec2 hitpixel;
-
+    
     vec4 diffuse = texture(diffuseRect, tc);
     vec3 specCol = spec.rgb;
 
     vec4 fcol = texture(diffuseMap, tc);
 
-    if (GET_GBUFFER_FLAG(GBUFFER_FLAG_HAS_PBR))
+    if (GET_GBUFFER_FLAG(GBUFFER_FLAG_HAS_PBR)) 
     {
         vec3 orm = specCol.rgb;
         float perceptualRoughness = orm.g;
@@ -84,7 +81,7 @@ void main()
 
     vec4 collectedColor = vec4(0);
 
-    float w = tapScreenSpaceReflection(4, tc, pos, n, collectedColor, diffuseMap, 0);
+    float w = tapScreenSpaceReflection(4, tc, pos, norm.xyz, collectedColor, diffuseMap, 0);
 
     collectedColor.rgb *= specCol.rgb;
 
diff --git a/indra/newview/app_settings/shaders/class3/deferred/softenLightF.glsl b/indra/newview/app_settings/shaders/class3/deferred/softenLightF.glsl
index 47b5934b84..96c32734e4 100644
--- a/indra/newview/app_settings/shaders/class3/deferred/softenLightF.glsl
+++ b/indra/newview/app_settings/shaders/class3/deferred/softenLightF.glsl
@@ -50,6 +50,7 @@ uniform float ssao_irradiance_max;
 #endif
 
 // Inputs
+uniform vec4 clipPlane;
 uniform mat3 env_mat;
 uniform mat3  ssao_effect_mat;
 uniform vec3 sun_dir;
@@ -60,7 +61,7 @@ in vec2 vary_fragcoord;
 uniform mat4 inv_proj;
 uniform vec2 screen_res;
 
-vec3 getNorm(vec2 pos_screen);
+vec4 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);
@@ -104,8 +105,8 @@ vec3 pbrBaseLight(vec3 diffuseColor,
                   vec3 additive,
                   vec3 atten);
 
-vec3 pbrPunctual(vec3 diffuseColor, vec3 specularColor,
-                    float perceptualRoughness,
+vec3 pbrPunctual(vec3 diffuseColor, vec3 specularColor, 
+                    float perceptualRoughness, 
                     float metallic,
                     vec3 n, // normal
                     vec3 v, // surface point to camera
@@ -127,13 +128,13 @@ void main()
     vec2  tc           = vary_fragcoord.xy;
     float depth        = getDepth(tc.xy);
     vec4  pos          = getPositionWithDepth(tc, depth);
-    vec4  norm         = texture(normalMap, tc);
-    float envIntensity = norm.z;
-    norm.xyz           = getNorm(tc);
+    vec4  norm         = getNorm(tc);
+    vec3 colorEmissive = texture(emissiveRect, tc).rgb;
+    float envIntensity = colorEmissive.r;
     vec3  light_dir   = (sun_up_factor == 1) ? sun_dir : moon_dir;
 
     vec4 baseColor     = texture(diffuseRect, tc);
-    vec4 spec        = texture(specularRect, vary_fragcoord.xy); // NOTE: PBR linear Emissive
+    vec4 spec        = texture(specularRect, tc); // NOTE: PBR linear Emissive
 
 #if defined(HAS_SUN_SHADOW) || defined(HAS_SSAO)
     vec2 scol_ambocc = texture(lightMap, vary_fragcoord.xy).rg;
@@ -168,15 +169,15 @@ void main()
 
     if (GET_GBUFFER_FLAG(GBUFFER_FLAG_HAS_PBR))
     {
-        vec3 orm = texture(specularRect, tc).rgb;
+        vec3 orm = spec.rgb; 
         float perceptualRoughness = orm.g;
         float metallic = orm.b;
         float ao = orm.r;
 
-        vec3 colorEmissive = texture(emissiveRect, tc).rgb;
+        
         // PBR IBL
         float gloss      = 1.0 - perceptualRoughness;
-
+        
         sampleReflectionProbes(irradiance, radiance, tc, pos.xyz, norm.xyz, gloss, false, amblit_linear);
 
         adjustIrradiance(irradiance, ambocc);
@@ -188,10 +189,15 @@ 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);
     }
-    else if (!GET_GBUFFER_FLAG(GBUFFER_FLAG_HAS_ATMOS))
+    else if (GET_GBUFFER_FLAG(GBUFFER_FLAG_HAS_HDRI))
+    {
+        // actual HDRI sky, just copy color value
+        color = colorEmissive.rgb;
+    }
+    else if (GET_GBUFFER_FLAG(GBUFFER_FLAG_SKIP_ATMOS))
     {
-        //should only be true of WL sky, just port over base color value
-        color = texture(emissiveRect, tc).rgb;
+        //should only be true of WL sky, port over base color value and scale for fake HDR
+        color = colorEmissive.rgb;
         color = srgb_to_linear(color);
         color *= sky_hdr_scale;
     }
@@ -199,7 +205,7 @@ void main()
     {
         // legacy shaders are still writng sRGB to gbuffer
         baseColor.rgb = srgb_to_linear(baseColor.rgb);
-
+        
         spec.rgb = srgb_to_linear(spec.rgb);
 
         float da          = clamp(dot(norm.xyz, light_dir.xyz), 0.0, 1.0);
@@ -218,7 +224,7 @@ void main()
         vec3 sun_contrib = min(da, scol) * sunlit_linear;
         color.rgb += sun_contrib;
         color.rgb *= baseColor.rgb;
-
+        
         vec3 refnormpersp = reflect(pos.xyz, norm.xyz);
 
         if (spec.a > 0.0)
@@ -244,10 +250,11 @@ void main()
 
             // add radiance map
             applyGlossEnv(color, glossenv, spec, pos.xyz, norm.xyz);
+
         }
 
         color.rgb = mix(color.rgb, baseColor.rgb, baseColor.a);
-
+        
         if (envIntensity > 0.0)
         {  // add environment map
             applyLegacyEnv(color, legacyenv, spec, pos.xyz, norm.xyz, envIntensity);
diff --git a/indra/newview/app_settings/shaders/class3/deferred/spotLightF.glsl b/indra/newview/app_settings/shaders/class3/deferred/spotLightF.glsl
index 871c7ce812..319fa86148 100644
--- a/indra/newview/app_settings/shaders/class3/deferred/spotLightF.glsl
+++ b/indra/newview/app_settings/shaders/class3/deferred/spotLightF.glsl
@@ -1,28 +1,28 @@
-/**
+/** 
  * @file class3\deferred\spotLightF.glsl
  *
  * $LicenseInfo:firstyear=2022&license=viewerlgpl$
  * Second Life Viewer Source Code
  * Copyright (C) 2022, 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
  * $/LicenseInfo$
  */
-
+ 
 /*[EXTRA_CODE_HERE]*/
 
 out vec4 frag_color;
@@ -72,7 +72,7 @@ uniform mat4 inv_proj;
 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);
 bool clipProjectedLightVars(vec3 center, vec3 pos, out float dist, out float l_dist, out vec3 lv, out vec4 proj_tc );
-vec4 getNormalEnvIntensityFlags(vec2 screenpos, out vec3 n, out float envIntensity);
+vec4 getNorm(vec2 screenpos);
 vec3 getProjectedLightAmbiance(float amb_da, float attenuation, float lit, float nl, float noise, vec2 projected_uv);
 vec3 getProjectedLightDiffuseColor(float light_distance, vec2 projected_uv );
 vec2 getScreenCoord(vec4 clip);
@@ -83,8 +83,8 @@ vec4 getPosition(vec2 pos_screen);
 
 const float M_PI = 3.14159265;
 
-vec3 pbrPunctual(vec3 diffuseColor, vec3 specularColor,
-                    float perceptualRoughness,
+vec3 pbrPunctual(vec3 diffuseColor, vec3 specularColor, 
+                    float perceptualRoughness, 
                     float metallic,
                     vec3 n, // normal
                     vec3 v, // surface point to camera
@@ -112,18 +112,17 @@ void main()
     }
 
     float shadow = 1.0;
-
+    
     if (proj_shadow_idx >= 0)
     {
         vec4 shd = texture(lightMap, tc);
         shadow = (proj_shadow_idx==0)?shd.b:shd.a;
         shadow += shadow_fade;
-        shadow = clamp(shadow, 0.0, 1.0);
+        shadow = clamp(shadow, 0.0, 1.0);        
     }
 
-    float envIntensity;
-    vec3 n;
-    vec4 norm = getNormalEnvIntensityFlags(tc, n, envIntensity);
+    vec4 norm = getNorm(tc);
+    vec3 n = norm.xyz;
 
     float dist_atten = calcLegacyDistanceAttenuation(dist, falloff);
     if (dist_atten <= 0.0)
@@ -145,13 +144,12 @@ void main()
 
     if (GET_GBUFFER_FLAG(GBUFFER_FLAG_HAS_PBR))
     {
-        vec3 colorEmissive = texture(emissiveRect, tc).rgb;
         vec3 orm = spec.rgb;
         float perceptualRoughness = orm.g;
         float metallic = orm.b;
         vec3 f0 = vec3(0.04);
         vec3 baseColor = diffuse.rgb;
-
+        
         vec3 diffuseColor = baseColor.rgb*(vec3(1.0)-f0);
         diffuseColor *= 1.0 - metallic;
 
@@ -169,7 +167,7 @@ void main()
             if (nl > 0.0)
             {
                 amb_da += (nl*0.5 + 0.5) * proj_ambiance;
-
+                
                 dlit = getProjectedLightDiffuseColor( l_dist, proj_tc.xy );
 
                 vec3 intensity = dist_atten * dlit * 3.25 * shadow; // Legacy attenuation, magic number to balance with legacy materials
@@ -182,6 +180,8 @@ void main()
     }
     else
     {
+        float envIntensity = texture(emissiveRect, tc).r;
+
         diffuse = srgb_to_linear(diffuse);
         spec.rgb = srgb_to_linear(spec.rgb);
 
@@ -205,11 +205,11 @@ void main()
                 // unshadowed for consistency between forward and deferred?
                 amb_da += (nl*0.5+0.5) /* * (1.0-shadow) */ * proj_ambiance;
             }
-
+        
             amb_rgb = getProjectedLightAmbiance( amb_da, dist_atten, lit, nl, 1.0, proj_tc.xy );
             final_color += diffuse.rgb * amb_rgb * max(dot(-normalize(lv), n), 0.0);
         }
-
+    
         if (spec.a > 0.0)
         {
             dlit *= min(nl*6.0, 1.0) * dist_atten;
@@ -218,7 +218,7 @@ void main()
 
             float gtdenom = 2 * nh;
             float gt = max(0, min(gtdenom * nv / vh, gtdenom * nl / vh));
-
+                                
             if (nh > 0.0)
             {
                 float scol = fres*texture(lightFunc, vec2(nh, spec.a)).r*gt/(nh*nl);
@@ -226,26 +226,26 @@ void main()
                 speccol = clamp(speccol, vec3(0), vec3(1));
                 final_color += speccol;
             }
-        }
+        }   
 
         if (envIntensity > 0.0)
         {
             vec3 ref = reflect(normalize(pos), n);
-
+        
             //project from point pos in direction ref to plane proj_p, proj_n
             vec3 pdelta = proj_p-pos;
             float ds = dot(ref, proj_n);
-
+        
             if (ds < 0.0)
             {
                 vec3 pfinal = pos + ref * dot(pdelta, proj_n)/ds;
-
+            
                 vec4 stc = (proj_mat * vec4(pfinal.xyz, 1.0));
 
                 if (stc.z > 0.0)
                 {
                     stc /= stc.w;
-
+                                
                     if (stc.x < 1.0 &&
                         stc.y < 1.0 &&
                         stc.x > 0.0 &&
diff --git a/indra/newview/app_settings/shaders/class3/deferred/waterHazeF.glsl b/indra/newview/app_settings/shaders/class3/deferred/waterHazeF.glsl
index 61059e2339..f6bef1e498 100644
--- a/indra/newview/app_settings/shaders/class3/deferred/waterHazeF.glsl
+++ b/indra/newview/app_settings/shaders/class3/deferred/waterHazeF.glsl
@@ -43,7 +43,7 @@ void main()
     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
@@ -56,10 +56,9 @@ void main()
     }
 
     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/class3/environment/underWaterF.glsl b/indra/newview/app_settings/shaders/class3/environment/underWaterF.glsl
index 3bf606a252..728d70ebb2 100644
--- a/indra/newview/app_settings/shaders/class3/environment/underWaterF.glsl
+++ b/indra/newview/app_settings/shaders/class3/environment/underWaterF.glsl
@@ -55,9 +55,11 @@ in vec4 view;
 in vec3 vary_position;
 
 vec4 applyWaterFogViewLinearNoClip(vec3 pos, vec4 color);
+void mirrorClip(vec3 position);
 
 void main()
 {
+    mirrorClip(vary_position);
     vec4 color;
 
     //get detail normals
diff --git a/indra/newview/app_settings/shaders/class3/environment/waterF.glsl b/indra/newview/app_settings/shaders/class3/environment/waterF.glsl
index 9b06975bfb..03da5b020f 100644
--- a/indra/newview/app_settings/shaders/class3/environment/waterF.glsl
+++ b/indra/newview/app_settings/shaders/class3/environment/waterF.glsl
@@ -35,6 +35,8 @@ 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);
 vec4 applyWaterFogViewLinear(vec3 pos, vec4 color);
 
+void mirrorClip(vec3 pos);
+
 // PBR interface
 vec2 BRDF(float NoV, float roughness);
 
@@ -129,6 +131,7 @@ vec3 getPositionWithNDC(vec3 ndc);
 
 void main()
 {
+    mirrorClip(vary_position);
     vN = vary_normal;
     vT = vary_tangent;
     vB = cross(vN, vT);