From d2763841bece7509958164e2a9a60d03eff6530c Mon Sep 17 00:00:00 2001
From: Olivier Prat <olivier@zvork.fr>
Date: Thu, 5 Jul 2018 17:15:39 +0200
Subject: [PATCH] Working background blend on haze

---
 libraries/graphics/src/graphics/Haze.cpp | 6 +++---
 libraries/render-utils/src/Haze.slh      | 2 +-
 2 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/libraries/graphics/src/graphics/Haze.cpp b/libraries/graphics/src/graphics/Haze.cpp
index d5a060b90b..ded48429ba 100644
--- a/libraries/graphics/src/graphics/Haze.cpp
+++ b/libraries/graphics/src/graphics/Haze.cpp
@@ -177,9 +177,9 @@ void Haze::setHazeBaseReference(const float hazeBaseReference) {
 
 void Haze::setHazeBackgroundBlend(const float hazeBackgroundBlend) {
     auto& params = _hazeParametersBuffer.get<Parameters>();
-
-    if (params.hazeBackgroundBlend != hazeBackgroundBlend) {
-        _hazeParametersBuffer.edit<Parameters>().hazeBackgroundBlend = hazeBackgroundBlend;
+    auto newBlend = 1.0f - hazeBackgroundBlend;
+    if (params.hazeBackgroundBlend != newBlend) {
+        _hazeParametersBuffer.edit<Parameters>().hazeBackgroundBlend = newBlend;
     }
 }
 
diff --git a/libraries/render-utils/src/Haze.slh b/libraries/render-utils/src/Haze.slh
index 06c55bb398..7854ad08ca 100644
--- a/libraries/render-utils/src/Haze.slh
+++ b/libraries/render-utils/src/Haze.slh
@@ -187,7 +187,7 @@ vec4 computeHazeColor(vec3 fragPositionES, vec3 fragPositionWS, vec3 eyePosition
     const float BLEND_DISTANCE = 27000.0f;
     vec4 outFragColor = potentialFragColor;
     if (distance > BLEND_DISTANCE) {
-        outFragColor.a = 1.0 - hazeParams.backgroundBlend;
+        outFragColor.a *= hazeParams.backgroundBlend;
     }
 
     return outFragColor;