Merge pull request #245 from secondlife/DRTVWR-583-glossy-ssr

Performance and visual tuning of glossy SSR

13 files changed, 99 insertions, 41 deletions

diff --git a/indra/llrender/llshadermgr.cpp b/indra/llrender/llshadermgr.cpp
index f398526b41..75d6ef6c46 100644
--- a/indra/llrender/llshadermgr.cpp
+++ b/indra/llrender/llshadermgr.cpp
@@ -1341,6 +1341,7 @@ void LLShaderMgr::initAttribsAndUniforms()
     mReservedUniforms.push_back("depthRejectBias");
     mReservedUniforms.push_back("glossySampleCount");
     mReservedUniforms.push_back("noiseSine");
+    mReservedUniforms.push_back("adaptiveStepMultiplier");
 
     mReservedUniforms.push_back("modelview_delta");
     mReservedUniforms.push_back("inv_modelview_delta");
diff --git a/indra/llrender/llshadermgr.h b/indra/llrender/llshadermgr.h
index 5d7ab7c53d..46f352aa58 100644
--- a/indra/llrender/llshadermgr.h
+++ b/indra/llrender/llshadermgr.h
@@ -166,6 +166,7 @@ public:
         DEFERRED_SSR_REJECT_BIAS,           //  "depthRejectBias"
         DEFERRED_SSR_GLOSSY_SAMPLES,        //  "glossySampleCount"
         DEFERRED_SSR_NOISE_SINE,            //  "noiseSine"
+        DEFERRED_SSR_ADAPTIVE_STEP_MULT,    //  "adaptiveStepMultiplier"
 
         MODELVIEW_DELTA_MATRIX,             //  "modelview_delta"
         INVERSE_MODELVIEW_DELTA_MATRIX,     //  "inv_modelview_delta"
diff --git a/indra/newview/app_settings/settings.xml b/indra/newview/app_settings/settings.xml
index ee14bb2b2f..cb4e5ec7f3 100644
--- a/indra/newview/app_settings/settings.xml
+++ b/indra/newview/app_settings/settings.xml
@@ -9195,7 +9195,7 @@
     <key>Type</key>
     <string>S32</string>
     <key>Value</key>
-    <integer>40</integer>
+    <integer>25</integer>
   </map>
   <key>RenderScreenSpaceReflectionRayStep</key>
   <map>
@@ -9230,6 +9230,17 @@
     <key>Value</key>
     <real>0.001</real>
   </map>
+  <key>RenderScreenSpaceReflectionAdaptiveStepMultiplier</key>
+  <map>
+    <key>Comment</key>
+    <string>Multiplier to scale adaptive stepping.</string>
+    <key>Persist</key>
+    <integer>1</integer>
+    <key>Type</key>
+    <string>F32</string>
+    <key>Value</key>
+    <real>1.6</real>
+  </map>
   <key>RenderScreenSpaceReflectionGlossySamples</key>
   <map>
     <key>Comment</key>
@@ -9239,7 +9250,7 @@
     <key>Type</key>
     <string>S32</string>
     <key>Value</key>
-    <integer>8</integer>
+    <integer>4</integer>
   </map>
   <key>RenderBumpmapMinDistanceSquared</key>
     <map>
diff --git a/indra/newview/app_settings/shaders/class2/deferred/alphaF.glsl b/indra/newview/app_settings/shaders/class2/deferred/alphaF.glsl
index cd57b47eae..da5f997429 100644
--- a/indra/newview/app_settings/shaders/class2/deferred/alphaF.glsl
+++ b/indra/newview/app_settings/shaders/class2/deferred/alphaF.glsl
@@ -85,7 +85,7 @@ float sampleDirectionalShadow(vec3 pos, vec3 norm, vec2 pos_screen);
 float getAmbientClamp();
 
 void sampleReflectionProbesLegacy(inout vec3 ambenv, inout vec3 glossenv, inout vec3 legacyenv,
-        vec2 tc, vec3 pos, vec3 norm, float glossiness, float envIntensity);
+        vec2 tc, vec3 pos, vec3 norm, float glossiness, float envIntensity, bool transparent);
 
 vec3 calcPointLightOrSpotLight(vec3 light_col, vec3 diffuse, vec3 v, vec3 n, vec4 lp, vec3 ln, float la, float fa, float is_pointlight, float ambiance)
 {
@@ -251,7 +251,7 @@ void main()
     vec3 irradiance;
     vec3 glossenv;
     vec3 legacyenv;
-    sampleReflectionProbesLegacy(irradiance, glossenv, legacyenv, frag, pos.xyz, norm.xyz, 0.0, 0.0);
+    sampleReflectionProbesLegacy(irradiance, glossenv, legacyenv, frag, pos.xyz, norm.xyz, 0.0, 0.0, true);
     
 
     float da = dot(norm.xyz, light_dir.xyz);
diff --git a/indra/newview/app_settings/shaders/class2/deferred/pbralphaF.glsl b/indra/newview/app_settings/shaders/class2/deferred/pbralphaF.glsl
index d678973515..e8db856b1f 100644
--- a/indra/newview/app_settings/shaders/class2/deferred/pbralphaF.glsl
+++ b/indra/newview/app_settings/shaders/class2/deferred/pbralphaF.glsl
@@ -92,7 +92,7 @@ void calcHalfVectors(vec3 lv, vec3 n, vec3 v, out vec3 h, out vec3 l, out float
 float calcLegacyDistanceAttenuation(float distance, float falloff);
 float sampleDirectionalShadow(vec3 pos, vec3 norm, vec2 pos_screen);
 void sampleReflectionProbes(inout vec3 ambenv, inout vec3 glossenv, 
-        vec2 tc, vec3 pos, vec3 norm, float glossiness);
+        vec2 tc, vec3 pos, vec3 norm, float glossiness, bool transparent);
 
 void waterClip(vec3 pos);
 
@@ -224,7 +224,7 @@ void main()
     float gloss      = 1.0 - perceptualRoughness;
     vec3  irradiance = vec3(0);
     vec3  radiance  = vec3(0);
-    sampleReflectionProbes(irradiance, radiance, vary_position.xy*0.5+0.5, pos.xyz, norm.xyz, gloss);
+    sampleReflectionProbes(irradiance, radiance, vary_position.xy*0.5+0.5, pos.xyz, norm.xyz, gloss, true);
     // Take maximium of legacy ambient vs irradiance sample as irradiance
     // NOTE: ao is applied in pbrIbl (see pbrBaseLight), do not apply here
     irradiance       = max(amblit,irradiance);
diff --git a/indra/newview/app_settings/shaders/class2/deferred/reflectionProbeF.glsl b/indra/newview/app_settings/shaders/class2/deferred/reflectionProbeF.glsl
index 60134a7f72..aa6f5a3b62 100644
--- a/indra/newview/app_settings/shaders/class2/deferred/reflectionProbeF.glsl
+++ b/indra/newview/app_settings/shaders/class2/deferred/reflectionProbeF.glsl
@@ -34,7 +34,7 @@ uniform mat3 env_mat;
 vec3 srgb_to_linear(vec3 c);
 
 void sampleReflectionProbes(inout vec3 ambenv, inout vec3 glossenv,
-        vec2 tc, vec3 pos, vec3 norm, float glossiness)
+        vec2 tc, vec3 pos, vec3 norm, float glossiness, bool transparent)
 {
     ambenv = vec3(reflection_probe_ambiance * 0.25);
     
@@ -46,7 +46,7 @@ void sampleReflectionProbes(inout vec3 ambenv, inout vec3 glossenv,
 void sampleReflectionProbesWater(inout vec3 ambenv, inout vec3 glossenv,
         vec2 tc, vec3 pos, vec3 norm, float glossiness)
 {
-    sampleReflectionProbes(ambenv, glossenv, tc, pos, norm, glossiness);
+    sampleReflectionProbes(ambenv, glossenv, tc, pos, norm, glossiness, false);
 }
 
 vec4 sampleReflectionProbesDebug(vec3 pos)
@@ -56,7 +56,7 @@ vec4 sampleReflectionProbesDebug(vec3 pos)
 }
 
 void sampleReflectionProbesLegacy(inout vec3 ambenv, inout vec3 glossenv, inout vec3 legacyenv,
-        vec2 tc, vec3 pos, vec3 norm, float glossiness, float envIntensity)
+        vec2 tc, vec3 pos, vec3 norm, float glossiness, float envIntensity, bool transparent)
 {
     ambenv = vec3(reflection_probe_ambiance * 0.25);
     
diff --git a/indra/newview/app_settings/shaders/class3/deferred/fullbrightShinyF.glsl b/indra/newview/app_settings/shaders/class3/deferred/fullbrightShinyF.glsl
index 0d77e88831..1537714bb7 100644
--- a/indra/newview/app_settings/shaders/class3/deferred/fullbrightShinyF.glsl
+++ b/indra/newview/app_settings/shaders/class3/deferred/fullbrightShinyF.glsl
@@ -49,7 +49,7 @@ vec3 srgb_to_linear(vec3 c);
 
 // reflection probe interface
 void sampleReflectionProbesLegacy(inout vec3 ambenv, inout vec3 glossenv, inout vec3 legacyenv,
-        vec2 tc, vec3 pos, vec3 norm, float glossiness, float envIntensity);
+        vec2 tc, vec3 pos, vec3 norm, float glossiness, float envIntensity, bool transparent);
 
 void applyLegacyEnv(inout vec3 color, vec3 legacyenv, vec4 spec, vec3 pos, vec3 norm, float envIntensity);
 
@@ -80,7 +80,7 @@ void main()
     vec3 legacyenv;
     vec3 norm = normalize(vary_texcoord1.xyz);
     vec4 spec = vec4(0,0,0,0);
-    sampleReflectionProbesLegacy(ambenv, glossenv, legacyenv, vec2(0), pos.xyz, norm.xyz, spec.a, env_intensity);
+    sampleReflectionProbesLegacy(ambenv, glossenv, legacyenv, vec2(0), pos.xyz, norm.xyz, spec.a, env_intensity, false);
 
     color.rgb = legacy_adjust(color.rgb);
     color.rgb = srgb_to_linear(color.rgb);
diff --git a/indra/newview/app_settings/shaders/class3/deferred/materialF.glsl b/indra/newview/app_settings/shaders/class3/deferred/materialF.glsl
index ab40298f44..ac2e359769 100644
--- a/indra/newview/app_settings/shaders/class3/deferred/materialF.glsl
+++ b/indra/newview/app_settings/shaders/class3/deferred/materialF.glsl
@@ -60,7 +60,7 @@ float sampleDirectionalShadow(vec3 pos, vec3 norm, vec2 pos_screen);
 #endif
 
 void sampleReflectionProbesLegacy(inout vec3 ambenv, inout vec3 glossenv, inout vec3 legacyenv,
-        vec2 tc, vec3 pos, vec3 norm, float glossiness, float envIntensity);
+        vec2 tc, vec3 pos, vec3 norm, float glossiness, float envIntensity, bool transparent);
 void applyGlossEnv(inout vec3 color, vec3 glossenv, vec4 spec, vec3 pos, vec3 norm);
 void applyLegacyEnv(inout vec3 color, vec3 legacyenv, vec4 spec, vec3 pos, vec3 norm, float envIntensity);
 
@@ -339,7 +339,7 @@ void main()
     vec3 ambenv;
     vec3 glossenv;
     vec3 legacyenv;
-    sampleReflectionProbesLegacy(ambenv, glossenv, legacyenv, pos.xy*0.5+0.5, pos.xyz, norm.xyz, glossiness, env);
+    sampleReflectionProbesLegacy(ambenv, glossenv, legacyenv, pos.xy*0.5+0.5, pos.xyz, norm.xyz, glossiness, env, true);
     
     // use sky settings ambient or irradiance map sample, whichever is brighter
     color = max(amblit_linear, ambenv);
diff --git a/indra/newview/app_settings/shaders/class3/deferred/reflectionProbeF.glsl b/indra/newview/app_settings/shaders/class3/deferred/reflectionProbeF.glsl
index 53e15bd1a1..1b2a34ef01 100644
--- a/indra/newview/app_settings/shaders/class3/deferred/reflectionProbeF.glsl
+++ b/indra/newview/app_settings/shaders/class3/deferred/reflectionProbeF.glsl
@@ -35,6 +35,8 @@ uniform sampler2D sceneMap;
 uniform int cube_snapshot;
 uniform float max_probe_lod;
 
+uniform bool transparent_surface;
+
 #define MAX_REFMAP_COUNT 256  // must match LL_MAX_REFLECTION_PROBE_COUNT
 
 layout (std140) uniform ReflectionProbes
@@ -671,7 +673,7 @@ vec3 sampleProbeAmbient(vec3 pos, vec3 dir)
 }
 
 void doProbeSample(inout vec3 ambenv, inout vec3 glossenv,
-        vec2 tc, vec3 pos, vec3 norm, float glossiness)
+        vec2 tc, vec3 pos, vec3 norm, float glossiness, bool transparent)
 {
     // TODO - don't hard code lods
     float reflection_lods = max_probe_lod;
@@ -687,7 +689,16 @@ void doProbeSample(inout vec3 ambenv, inout vec3 glossenv,
     if (cube_snapshot != 1 && glossiness >= 0.9)
     {
         vec4 ssr = vec4(0);
-        float w = tapScreenSpaceReflection(1, tc, pos, norm, ssr, sceneMap, glossiness);
+        if (transparent)
+        {
+            tapScreenSpaceReflection(1, tc, pos, norm, ssr, sceneMap, 1);
+            ssr.a *= glossiness;
+        }
+        else
+        {
+            tapScreenSpaceReflection(1, tc, pos, norm, ssr, sceneMap, glossiness);
+        }
+
 
         glossenv = mix(glossenv, ssr.rgb, ssr.a);
     }
@@ -695,10 +706,10 @@ void doProbeSample(inout vec3 ambenv, inout vec3 glossenv,
 }
 
 void sampleReflectionProbes(inout vec3 ambenv, inout vec3 glossenv,
-        vec2 tc, vec3 pos, vec3 norm, float glossiness)
+        vec2 tc, vec3 pos, vec3 norm, float glossiness, bool transparent)
 {
     preProbeSample(pos);
-    doProbeSample(ambenv, glossenv, tc, pos, norm, glossiness);
+    doProbeSample(ambenv, glossenv, tc, pos, norm, glossiness, transparent);
 }
 
 void sampleReflectionProbesWater(inout vec3 ambenv, inout vec3 glossenv,
@@ -711,7 +722,7 @@ void sampleReflectionProbesWater(inout vec3 ambenv, inout vec3 glossenv,
     // always include void probe on water
     probeIndex[probeInfluences++] = 0;
 
-    doProbeSample(ambenv, glossenv, tc, pos, norm, glossiness);
+    doProbeSample(ambenv, glossenv, tc, pos, norm, glossiness, false);
 
     // fudge factor to get PBR water at a similar luminance ot legacy water
     glossenv *= 0.4;
@@ -766,7 +777,7 @@ vec4 sampleReflectionProbesDebug(vec3 pos)
 }
 
 void sampleReflectionProbesLegacy(inout vec3 ambenv, inout vec3 glossenv, inout vec3 legacyenv,
-        vec2 tc, vec3 pos, vec3 norm, float glossiness, float envIntensity)
+        vec2 tc, vec3 pos, vec3 norm, float glossiness, float envIntensity, bool transparent)
 {
     float reflection_lods = max_probe_lod;
     preProbeSample(pos);
@@ -790,7 +801,16 @@ void sampleReflectionProbesLegacy(inout vec3 ambenv, inout vec3 glossenv, inout
     if (cube_snapshot != 1)
     {
         vec4 ssr = vec4(0);
-        float w = tapScreenSpaceReflection(1, tc, pos, norm, ssr, sceneMap, glossiness);
+
+        if (transparent)
+        {
+            tapScreenSpaceReflection(1, tc, pos, norm, ssr, sceneMap, 1);
+            ssr.a *= glossiness;
+        }
+        else
+        {
+            tapScreenSpaceReflection(1, tc, pos, norm, ssr, sceneMap, glossiness);
+        }
 
         glossenv = mix(glossenv, ssr.rgb, ssr.a);
         legacyenv = mix(legacyenv, ssr.rgb, ssr.a);
diff --git a/indra/newview/app_settings/shaders/class3/deferred/screenSpaceReflUtil.glsl b/indra/newview/app_settings/shaders/class3/deferred/screenSpaceReflUtil.glsl
index 5ad25c325f..b2d1e75d04 100644
--- a/indra/newview/app_settings/shaders/class3/deferred/screenSpaceReflUtil.glsl
+++ b/indra/newview/app_settings/shaders/class3/deferred/screenSpaceReflUtil.glsl
@@ -61,6 +61,8 @@ uniform float rayStep;
 uniform float distanceBias;
 uniform float depthRejectBias;
 uniform float glossySampleCount;
+uniform float adaptiveStepMultiplier;
+uniform float noiseSine;
 
 float epsilon = 0.1;
 
@@ -135,7 +137,7 @@ bool traceScreenRay(vec3 position, vec3 reflection, out vec4 hitColor, out float
 
             if (isExponentialStepEnabled)
             {
-                step *= 1.05;
+                step *= adaptiveStepMultiplier;
             }
         }
         if(isBinarySearchEnabled)
@@ -302,8 +304,16 @@ uniform vec3 POISSON3D_SAMPLES[128] = vec3[128](
     vec3(0.2698198, 0.0002266169, 0.3449324)
 );
 
+vec3 getPoissonSample(int i) {
+    return POISSON3D_SAMPLES[i] * 2 - 1;
+}
+
 float tapScreenSpaceReflection(int totalSamples, vec2 tc, vec3 viewPos, vec3 n, inout vec4 collectedColor, sampler2D source, float glossiness)
 {
+#ifdef TRANSPARENT_SURFACE
+collectedColor = vec4(1, 0, 1, 1);
+    return 0;
+#endif
     collectedColor = vec4(0);
     int hits = 0;
 
@@ -319,9 +329,10 @@ float tapScreenSpaceReflection(int totalSamples, vec2 tc, vec3 viewPos, vec3 n,
     float vignette = clamp((abs(screenpos.x) * abs(screenpos.y)) * 64,0, 1);
     vignette *= clamp((dot(normalize(viewPos), n) * 0.5 + 0.5) * 16, 0, 1);
     
-    float zFar = 32.0;
+    float zFar = 128.0;
     vignette *= clamp(1.0+(viewPos.z/zFar), 0.0, 1.0);
 
+    vignette *= clamp(glossiness * 3 - 1.7, 0, 1);
 
     vec4 hitpoint;
     
@@ -329,17 +340,17 @@ float tapScreenSpaceReflection(int totalSamples, vec2 tc, vec3 viewPos, vec3 n,
 
     totalSamples = int(max(glossySampleCount, glossySampleCount * glossiness * vignette));
 
-    totalSamples = max(totalSamples, 4);
-
+    totalSamples = max(totalSamples, 1);
+    if (glossiness < 0.35)
     {
+        if (vignette > 0)
         {
             for (int i = 0; i < totalSamples; i++) 
             {
-                vec3 firstBasis = normalize(cross(POISSON3D_SAMPLES[i] * 2 - 1, rayDirection));
+                vec3 firstBasis = normalize(cross(getPoissonSample(i), rayDirection));
                 vec3 secondBasis = normalize(cross(rayDirection, firstBasis));
                 vec2 coeffs = vec2(random(tc + vec2(0, i)) + random(tc + vec2(i, 0)));
-                vec3 reflectionDirectionRandomized = rayDirection + ((firstBasis * coeffs.x + secondBasis * coeffs.y) * 0.125 * max(glossiness, 0.025));
-                //vec3 reflectionDirectionRandomized = rayDirection + (POISSON3D_SAMPLES[i] * 2 - 1) * 0.125 * max(glossiness, 0.025);
+                vec3 reflectionDirectionRandomized = rayDirection + ((firstBasis * coeffs.x + secondBasis * coeffs.y) * glossiness);
 
                 //float hitDepth;
 
@@ -354,15 +365,15 @@ float tapScreenSpaceReflection(int totalSamples, vec2 tc, vec3 viewPos, vec3 n,
                     collectedColor.a += 1;
                 }
             }
-        }
-
-        if (hits > 0)
-        {
-            collectedColor /= hits;
-        }
-        else
-        {
-            collectedColor = vec4(0);
+            
+            if (hits > 0)
+            {
+                collectedColor /= hits;
+            }
+            else
+            {
+                collectedColor = vec4(0);
+            }
         }
     }
     float hitAlpha = hits;
diff --git a/indra/newview/app_settings/shaders/class3/deferred/softenLightF.glsl b/indra/newview/app_settings/shaders/class3/deferred/softenLightF.glsl
index 409b46218b..4ef003e0cb 100644
--- a/indra/newview/app_settings/shaders/class3/deferred/softenLightF.glsl
+++ b/indra/newview/app_settings/shaders/class3/deferred/softenLightF.glsl
@@ -69,9 +69,9 @@ vec3  scaleSoftClipFragLinear(vec3 l);
 
 // reflection probe interface
 void sampleReflectionProbes(inout vec3 ambenv, inout vec3 glossenv,
-    vec2 tc, vec3 pos, vec3 norm, float glossiness);
+    vec2 tc, vec3 pos, vec3 norm, float glossiness, bool transparent);
 void sampleReflectionProbesLegacy(inout vec3 ambenv, inout vec3 glossenv, inout vec3 legacyenv,
-        vec2 tc, vec3 pos, vec3 norm, float glossiness, float envIntensity);
+        vec2 tc, vec3 pos, vec3 norm, float glossiness, float envIntensity, bool transparent);
 void applyGlossEnv(inout vec3 color, vec3 glossenv, vec4 spec, vec3 pos, vec3 norm);
 void applyLegacyEnv(inout vec3 color, vec3 legacyenv, vec4 spec, vec3 pos, vec3 norm, float envIntensity);
 float getDepth(vec2 pos_screen);
@@ -194,7 +194,7 @@ void main()
         // PBR IBL
         float gloss      = 1.0 - perceptualRoughness;
         
-        sampleReflectionProbes(irradiance, radiance, tc, pos.xyz, norm.xyz, gloss);
+        sampleReflectionProbes(irradiance, radiance, tc, pos.xyz, norm.xyz, gloss, false);
         
         adjustIrradiance(irradiance, amblit_linear, ambocc);
 
@@ -232,7 +232,7 @@ void main()
         vec3 glossenv = vec3(0);
         vec3 legacyenv = vec3(0);
 
-        sampleReflectionProbesLegacy(irradiance, glossenv, legacyenv, tc, pos.xyz, norm.xyz, spec.a, envIntensity);
+        sampleReflectionProbesLegacy(irradiance, glossenv, legacyenv, tc, pos.xyz, norm.xyz, spec.a, envIntensity, false);
         
         adjustIrradiance(irradiance, amblit_linear, ambocc);
 
diff --git a/indra/newview/pipeline.cpp b/indra/newview/pipeline.cpp
index c88b8b42ff..38f27d4dfa 100644
--- a/indra/newview/pipeline.cpp
+++ b/indra/newview/pipeline.cpp
@@ -195,6 +195,7 @@ S32 LLPipeline::RenderScreenSpaceReflectionIterations;
 F32 LLPipeline::RenderScreenSpaceReflectionRayStep;
 F32 LLPipeline::RenderScreenSpaceReflectionDistanceBias;
 F32 LLPipeline::RenderScreenSpaceReflectionDepthRejectBias;
+F32 LLPipeline::RenderScreenSpaceReflectionAdaptiveStepMultiplier;
 S32 LLPipeline::RenderScreenSpaceReflectionGlossySamples;
 S32 LLPipeline::RenderBufferVisualization;
 LLTrace::EventStatHandle<S64> LLPipeline::sStatBatchSize("renderbatchsize");
@@ -334,6 +335,7 @@ LLPipeline::LLPipeline() :
 	mTextureMatrixOps(0),
 	mNumVisibleNodes(0),
 	mNumVisibleFaces(0),
+	mPoissonOffset(0),
 
 	mInitialized(false),
 	mShadersLoaded(false),
@@ -552,7 +554,8 @@ void LLPipeline::init()
     connectRefreshCachedSettingsSafe("RenderScreenSpaceReflectionRayStep");
     connectRefreshCachedSettingsSafe("RenderScreenSpaceReflectionDistanceBias");
     connectRefreshCachedSettingsSafe("RenderScreenSpaceReflectionDepthRejectBias");
-    connectRefreshCachedSettingsSafe("RenderScreenSpaceReflectionsGlossySamples");
+    connectRefreshCachedSettingsSafe("RenderScreenSpaceReflectionAdaptiveStepMultiplier");
+    connectRefreshCachedSettingsSafe("RenderScreenSpaceReflectionGlossySamples");
 	connectRefreshCachedSettingsSafe("RenderBufferVisualization");
 	gSavedSettings.getControl("RenderAutoHideSurfaceAreaLimit")->getCommitSignal()->connect(boost::bind(&LLPipeline::refreshCachedSettings));
 }
@@ -1039,6 +1042,7 @@ void LLPipeline::refreshCachedSettings()
     RenderScreenSpaceReflectionRayStep = gSavedSettings.getF32("RenderScreenSpaceReflectionRayStep");
     RenderScreenSpaceReflectionDistanceBias = gSavedSettings.getF32("RenderScreenSpaceReflectionDistanceBias");
     RenderScreenSpaceReflectionDepthRejectBias = gSavedSettings.getF32("RenderScreenSpaceReflectionDepthRejectBias");
+    RenderScreenSpaceReflectionAdaptiveStepMultiplier = gSavedSettings.getF32("RenderScreenSpaceReflectionAdaptiveStepMultiplier");
     RenderScreenSpaceReflectionGlossySamples = gSavedSettings.getS32("RenderScreenSpaceReflectionGlossySamples");
 	RenderBufferVisualization = gSavedSettings.getS32("RenderBufferVisualization");
     sReflectionProbesEnabled = LLFeatureManager::getInstance()->isFeatureAvailable("RenderReflectionsEnabled") && gSavedSettings.getBOOL("RenderReflectionsEnabled");
@@ -8436,6 +8440,13 @@ void LLPipeline::bindReflectionProbes(LLGLSLShader& shader)
     shader.uniform1f(LLShaderMgr::DEFERRED_SSR_RAY_STEP, RenderScreenSpaceReflectionRayStep);
     shader.uniform1f(LLShaderMgr::DEFERRED_SSR_GLOSSY_SAMPLES, RenderScreenSpaceReflectionGlossySamples);
     shader.uniform1f(LLShaderMgr::DEFERRED_SSR_REJECT_BIAS, RenderScreenSpaceReflectionDepthRejectBias);
+    mPoissonOffset++;
+
+	if (mPoissonOffset > 128 - RenderScreenSpaceReflectionGlossySamples)
+        mPoissonOffset = 0;
+
+    shader.uniform1f(LLShaderMgr::DEFERRED_SSR_NOISE_SINE, mPoissonOffset);
+    shader.uniform1f(LLShaderMgr::DEFERRED_SSR_ADAPTIVE_STEP_MULT, RenderScreenSpaceReflectionAdaptiveStepMultiplier);
 
     channel = shader.enableTexture(LLShaderMgr::SCENE_DEPTH);
     if (channel > -1)
diff --git a/indra/newview/pipeline.h b/indra/newview/pipeline.h
index d9e6cf9933..19c8b06a46 100644
--- a/indra/newview/pipeline.h
+++ b/indra/newview/pipeline.h
@@ -630,6 +630,8 @@ public:
 
 	S32						 mNumVisibleFaces;
 
+	S32						mPoissonOffset;
+
 	static S32				sCompiles;
 
 	static bool				sShowHUDAttachments;
@@ -1034,6 +1036,7 @@ public:
 	static F32 RenderScreenSpaceReflectionRayStep;
 	static F32 RenderScreenSpaceReflectionDistanceBias;
 	static F32 RenderScreenSpaceReflectionDepthRejectBias;
+	static F32 RenderScreenSpaceReflectionAdaptiveStepMultiplier;
 	static S32 RenderScreenSpaceReflectionGlossySamples;
 	static S32 RenderBufferVisualization;
 };