SL-19842 WIP -- Change how probe ambiance mixes with sky ambient.

5 files changed, 32 insertions, 30 deletions

diff --git a/indra/newview/app_settings/shaders/class3/deferred/fullbrightShinyF.glsl b/indra/newview/app_settings/shaders/class3/deferred/fullbrightShinyF.glsl
index 1537714bb7..54a887262b 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, bool transparent);
+        vec2 tc, vec3 pos, vec3 norm, float glossiness, float envIntensity, bool transparent, vec3 amblit_linear);
 
 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, false);
+    sampleReflectionProbesLegacy(ambenv, glossenv, legacyenv, vec2(0), pos.xyz, norm.xyz, spec.a, env_intensity, false, amblit);
 
     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 82e2de0c0f..319f2f25b7 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, bool transparent);
+        vec2 tc, vec3 pos, vec3 norm, float glossiness, float envIntensity, bool transparent, vec3 amblit_linear);
 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);
 
@@ -339,10 +339,9 @@ void main()
     vec3 ambenv;
     vec3 glossenv;
     vec3 legacyenv;
-    sampleReflectionProbesLegacy(ambenv, glossenv, legacyenv, pos.xy*0.5+0.5, pos.xyz, norm.xyz, glossiness, env, true);
+    sampleReflectionProbesLegacy(ambenv, glossenv, legacyenv, pos.xy*0.5+0.5, pos.xyz, norm.xyz, glossiness, env, true, amblit_linear);
     
-    // use sky settings ambient or irradiance map sample, whichever is brighter
-    color = max(amblit_linear, ambenv);
+    color = ambenv;
 
     float da          = clamp(dot(norm.xyz, light_dir.xyz), 0.0, 1.0);
     vec3 sun_contrib = min(da, shadow) * sunlit_linear;
diff --git a/indra/newview/app_settings/shaders/class3/deferred/reflectionProbeF.glsl b/indra/newview/app_settings/shaders/class3/deferred/reflectionProbeF.glsl
index 41821def8e..906e66ecc8 100644
--- a/indra/newview/app_settings/shaders/class3/deferred/reflectionProbeF.glsl
+++ b/indra/newview/app_settings/shaders/class3/deferred/reflectionProbeF.glsl
@@ -530,7 +530,7 @@ vec3 tapRefMap(vec3 pos, vec3 dir, out float w, out float dw, float lod, vec3 c,
 // w - weight of sample (distance and angular attenuation)
 // dw - weight of sample (distance only)
 // i - index of probe 
-vec3 tapIrradianceMap(vec3 pos, vec3 dir, out float w, out float dw, vec3 c, int i)
+vec3 tapIrradianceMap(vec3 pos, vec3 dir, out float w, out float dw, vec3 c, int i, vec3 amblit)
 {
     // parallax adjustment
     vec3 v;
@@ -556,9 +556,12 @@ vec3 tapIrradianceMap(vec3 pos, vec3 dir, out float w, out float dw, vec3 c, int
 
     v -= c;
     v = env_mat * v;
-    {
-        return textureLod(irradianceProbes, vec4(v.xyz, refIndex[i].x), 0).rgb * refParams[i].x;
-    }
+    
+    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));
+
+    return col;
 }
 
 vec3 sampleProbes(vec3 pos, vec3 dir, float lod)
@@ -619,7 +622,7 @@ vec3 sampleProbes(vec3 pos, vec3 dir, float lod)
     return col[1]+col[0];
 }
 
-vec3 sampleProbeAmbient(vec3 pos, vec3 dir)
+vec3 sampleProbeAmbient(vec3 pos, vec3 dir, vec3 amblit)
 {
     // modified copy/paste of sampleProbes follows, will likely diverge from sampleProbes further
     // as irradiance map mixing is tuned independently of radiance map mixing
@@ -649,7 +652,7 @@ vec3 sampleProbeAmbient(vec3 pos, vec3 dir)
             float w = 0;
             float dw = 0;
 
-            vec3 refcol = tapIrradianceMap(pos, dir, w, dw, refSphere[i].xyz, i);
+            vec3 refcol = tapIrradianceMap(pos, dir, w, dw, refSphere[i].xyz, i, amblit);
 
             col[p] += refcol*w;
             wsum[p] += w;
@@ -679,14 +682,14 @@ vec3 sampleProbeAmbient(vec3 pos, vec3 dir)
 }
 
 void doProbeSample(inout vec3 ambenv, inout vec3 glossenv,
-        vec2 tc, vec3 pos, vec3 norm, float glossiness, bool transparent)
+        vec2 tc, vec3 pos, vec3 norm, float glossiness, bool transparent, vec3 amblit)
 {
     // TODO - don't hard code lods
     float reflection_lods = max_probe_lod;
 
     vec3 refnormpersp = reflect(pos.xyz, norm.xyz);
 
-    ambenv = sampleProbeAmbient(pos, norm);
+    ambenv = sampleProbeAmbient(pos, norm, amblit);
 
     float lod = (1.0-glossiness)*reflection_lods;
     glossenv = sampleProbes(pos, normalize(refnormpersp), lod);
@@ -712,14 +715,14 @@ void doProbeSample(inout vec3 ambenv, inout vec3 glossenv,
 }
 
 void sampleReflectionProbes(inout vec3 ambenv, inout vec3 glossenv,
-        vec2 tc, vec3 pos, vec3 norm, float glossiness, bool transparent)
+        vec2 tc, vec3 pos, vec3 norm, float glossiness, bool transparent, vec3 amblit)
 {
     preProbeSample(pos);
-    doProbeSample(ambenv, glossenv, tc, pos, norm, glossiness, transparent);
+    doProbeSample(ambenv, glossenv, tc, pos, norm, glossiness, transparent, amblit);
 }
 
 void sampleReflectionProbesWater(inout vec3 ambenv, inout vec3 glossenv,
-        vec2 tc, vec3 pos, vec3 norm, float glossiness)
+        vec2 tc, vec3 pos, vec3 norm, float glossiness, vec3 amblit)
 {
     // don't sample automatic probes for water
     sample_automatic = false;
@@ -728,7 +731,7 @@ void sampleReflectionProbesWater(inout vec3 ambenv, inout vec3 glossenv,
     // always include void probe on water
     probeIndex[probeInfluences++] = 0;
 
-    doProbeSample(ambenv, glossenv, tc, pos, norm, glossiness, false);
+    doProbeSample(ambenv, glossenv, tc, pos, norm, glossiness, false, amblit);
 
     // fudge factor to get PBR water at a similar luminance ot legacy water
     glossenv *= 0.4;
@@ -783,14 +786,14 @@ 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, bool transparent)
+        vec2 tc, vec3 pos, vec3 norm, float glossiness, float envIntensity, bool transparent, vec3 amblit)
 {
     float reflection_lods = max_probe_lod;
     preProbeSample(pos);
 
     vec3 refnormpersp = reflect(pos.xyz, norm.xyz);
 
-    ambenv = sampleProbeAmbient(pos, norm);
+    ambenv = sampleProbeAmbient(pos, norm, amblit);
 
     if (glossiness > 0.0)
     {
diff --git a/indra/newview/app_settings/shaders/class3/deferred/softenLightF.glsl b/indra/newview/app_settings/shaders/class3/deferred/softenLightF.glsl
index 4ef003e0cb..8b0ea23897 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, bool transparent);
+    vec2 tc, vec3 pos, vec3 norm, float glossiness, bool transparent, vec3 amblit_linear);
 void sampleReflectionProbesLegacy(inout vec3 ambenv, inout vec3 glossenv, inout vec3 legacyenv,
-        vec2 tc, vec3 pos, vec3 norm, float glossiness, float envIntensity, bool transparent);
+        vec2 tc, vec3 pos, vec3 norm, float glossiness, float envIntensity, bool transparent, vec3 amblit_linear);
 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);
@@ -117,10 +117,10 @@ vec3 pbrPunctual(vec3 diffuseColor, vec3 specularColor,
                     vec3 l); //surface point to light
 
 
-void adjustIrradiance(inout vec3 irradiance, vec3 amblit_linear, float ambocc)
+void adjustIrradiance(inout vec3 irradiance, float ambocc)
 {
     // use sky settings ambient or irradiance map sample, whichever is brighter
-    irradiance = max(amblit_linear, irradiance);
+    //irradiance = max(amblit_linear, irradiance);
 
 #if defined(HAS_SSAO)
     irradiance = mix(ssao_effect_mat * min(irradiance.rgb*ssao_irradiance_scale, vec3(ssao_irradiance_max)), irradiance.rgb, ambocc);
@@ -194,9 +194,9 @@ void main()
         // PBR IBL
         float gloss      = 1.0 - perceptualRoughness;
         
-        sampleReflectionProbes(irradiance, radiance, tc, pos.xyz, norm.xyz, gloss, false);
+        sampleReflectionProbes(irradiance, radiance, tc, pos.xyz, norm.xyz, gloss, false, amblit_linear);
         
-        adjustIrradiance(irradiance, amblit_linear, ambocc);
+        adjustIrradiance(irradiance, ambocc);
 
         vec3 diffuseColor;
         vec3 specularColor;
@@ -232,9 +232,9 @@ void main()
         vec3 glossenv = vec3(0);
         vec3 legacyenv = vec3(0);
 
-        sampleReflectionProbesLegacy(irradiance, glossenv, legacyenv, tc, pos.xyz, norm.xyz, spec.a, envIntensity, false);
+        sampleReflectionProbesLegacy(irradiance, glossenv, legacyenv, tc, pos.xyz, norm.xyz, spec.a, envIntensity, false, amblit_linear);
         
-        adjustIrradiance(irradiance, amblit_linear, ambocc);
+        adjustIrradiance(irradiance, ambocc);
 
         // apply lambertian IBL only (see pbrIbl)
         color.rgb = irradiance;
diff --git a/indra/newview/app_settings/shaders/class3/environment/waterF.glsl b/indra/newview/app_settings/shaders/class3/environment/waterF.glsl
index 8fee259933..4f79dd1ac5 100644
--- a/indra/newview/app_settings/shaders/class3/environment/waterF.glsl
+++ b/indra/newview/app_settings/shaders/class3/environment/waterF.glsl
@@ -124,7 +124,7 @@ vec3 transform_normal(vec3 vNt)
 }
 
 void sampleReflectionProbesWater(inout vec3 ambenv, inout vec3 glossenv,
-        vec2 tc, vec3 pos, vec3 norm, float glossiness);
+        vec2 tc, vec3 pos, vec3 norm, float glossiness, vec3 amblit_linear);
 
 vec3 getPositionWithNDC(vec3 ndc);
 
@@ -237,7 +237,7 @@ void main()
     
     vec3  irradiance = vec3(0);
     vec3  radiance  = vec3(0);
-    sampleReflectionProbesWater(irradiance, radiance, distort2, pos.xyz, wave_ibl.xyz, gloss);
+    sampleReflectionProbesWater(irradiance, radiance, distort2, pos.xyz, wave_ibl.xyz, gloss, amblit);
 
     irradiance       = vec3(0);