2 files changed, 47 insertions, 1 deletions
diff --git a/indra/newview/app_settings/settings.xml b/indra/newview/app_settings/settings.xml
index 09eda2534c..8e5e092250 100644
--- a/indra/newview/app_settings/settings.xml
+++ b/indra/newview/app_settings/settings.xml
@@ -9340,6 +9340,17 @@
     <key>Value</key>
     <integer>0</integer>
   </map>
+  <key>RenderPostProcessingHDR</key>
+  <map>
+    <key>Comment</key>
+    <string>Enable HDR for post processing buffer</string>
+    <key>Persist</key>
+    <integer>1</integer>
+    <key>Type</key>
+    <string>Boolean</string>
+    <key>Value</key>
+    <integer>0</integer>
+  </map>
   <key>RenderMaxOpenGLVersion</key>
   <map>
     <key>Comment</key>
@@ -10155,6 +10166,17 @@
       <key>Value</key>
       <integer>9</integer>
     </map>
+    <key>RenderGlowHDR</key>
+    <map>
+      <key>Comment</key>
+      <string>Enable HDR for glow map</string>
+      <key>Persist</key>
+      <integer>1</integer>
+      <key>Type</key>
+      <string>Boolean</string>
+      <key>Value</key>
+      <integer>0</integer>
+    </map>
     <key>RenderGlowStrength</key>
     <map>
       <key>Comment</key>
@@ -10203,6 +10225,17 @@
       <key>Value</key>
       <real>1.3</real>
     </map>
+    <key>RenderGlowNoise</key>
+    <map>
+      <key>Comment</key>
+      <string>Enables glow noise (dithering). Reduces banding from glow in certain cases.</string>
+      <key>Persist</key>
+      <integer>1</integer>
+      <key>Type</key>
+      <string>Boolean</string>
+      <key>Value</key>
+      <real>1</real>
+    </map>
     <key>DisableAllRenderTypes</key>
     <map>
       <key>Comment</key>
diff --git a/indra/newview/app_settings/shaders/class1/effects/glowExtractF.glsl b/indra/newview/app_settings/shaders/class1/effects/glowExtractF.glsl
index 7a5e14566b..b5437d43d2 100644
--- a/indra/newview/app_settings/shaders/class1/effects/glowExtractF.glsl
+++ b/indra/newview/app_settings/shaders/class1/effects/glowExtractF.glsl
@@ -28,6 +28,10 @@
 out vec4 frag_color;
 
 uniform sampler2D diffuseMap;
+#if HAS_NOISE
+uniform sampler2D glowNoiseMap;
+uniform vec2 screen_res;
+#endif
 uniform float minLuminance;
 uniform float maxExtractAlpha;
 uniform vec3 lumWeights;
@@ -44,7 +48,16 @@ void main()
 	float lum = smoothstep(minLuminance, minLuminance+1.0, dot(col.rgb, lumWeights ) );
 	float warmth = smoothstep(minLuminance, minLuminance+1.0, max(col.r * warmthWeights.r, max(col.g * warmthWeights.g, col.b * warmthWeights.b)) ); 
 	
-	frag_color.rgb = col.rgb; 
+#if HAS_NOISE
+    float TRUE_NOISE_RES = 128; // See mTrueNoiseMap
+    // *NOTE: Usually this is vary_fragcoord not vary_texcoord0, but glow extraction is in screen space
+    vec3 glow_noise = texture(glowNoiseMap, vary_texcoord0.xy * (screen_res / TRUE_NOISE_RES)).xyz;
+    // Dithering. Reduces banding effects in the reduced precision glow buffer.
+    float NOISE_DEPTH = 64.0;
+    col.rgb += glow_noise / NOISE_DEPTH;
+    col.rgb = max(col.rgb, vec3(0));
+#endif
+	frag_color.rgb = col.rgb;
 	frag_color.a = max(col.a, mix(lum, warmth, warmthAmount) * maxExtractAlpha);
 	
 }