From 3440ef0e45860f917a901c2fa76272dda926803b Mon Sep 17 00:00:00 2001
From: Filippo Scognamiglio <flscogna@gmail.com>
Date: Thu, 15 May 2014 23:41:12 +0200
Subject: [PATCH] Improved blur effect. Pixels now appear immediately and
 disappear smoothly as with real burnin effect.

---
 app/Terminal.qml        | 17 +++++++++--------
 app/app.qmlproject.user |  2 +-
 2 files changed, 10 insertions(+), 9 deletions(-)

diff --git a/app/Terminal.qml b/app/Terminal.qml
index ef248ce..b9339b8 100644
--- a/app/Terminal.qml
+++ b/app/Terminal.qml
@@ -27,11 +27,11 @@ import org.kde.konsole 0.1
 Item{
     id: terminalContainer
     //The blur effect has to take into account the framerate
-    property real fpsAttenuation: shadersettings.fps / 60
+    property real fpsAttenuation: 60 / shadersettings.fps
     property real mBlur: shadersettings.motion_blur
-    property real motionBlurCoefficient: ((_minBlurCoefficient)*mBlur + (_maxBlurCoefficient)*(1.0-mBlur)) / fpsAttenuation
-    property real _minBlurCoefficient: 0.015
-    property real _maxBlurCoefficient: 0.10
+    property real motionBlurCoefficient: (_maxBlurCoefficient * mBlur + _minBlurCoefficient * (1 - mBlur))
+    property real _minBlurCoefficient: 0.75
+    property real _maxBlurCoefficient: 0.95
 
     property real mBloom: shadersettings.bloom_strength
 
@@ -193,15 +193,16 @@ Item{
             : "") +
 
             "void main() {" +
-                "float color = texture2D(source, qt_TexCoord0).r * 0.8 * 512.0;" +
+                "float color = texture2D(source, qt_TexCoord0).r * 256.0;" +
 
                 (mBlur !== 0 ?
-                     "float blurredSourceColor = texture2D(blurredSource, qt_TexCoord0).r * 512.0;" +
-                     "color = mix(blurredSourceColor, color, " + motionBlurCoefficient + ");"
+                     "float blurredSourceColor = texture2D(blurredSource, qt_TexCoord0).r * 256.0;" +
+                     "blurredSourceColor = blurredSourceColor - blurredSourceColor * " + (1.0 - motionBlurCoefficient) * fpsAttenuation+ ";" +
+                     "color = step(1.0, color) * color + step(color, 1.0) * blurredSourceColor;"
                 : "") +
 
 
-                "gl_FragColor = vec4(vec3(floor(color) / 512.0), 1.0);" +
+                "gl_FragColor = vec4(vec3(floor(color) / 256.0), 1.0);" +
             "}"
     }
 }
diff --git a/app/app.qmlproject.user b/app/app.qmlproject.user
index b5e3e0a..205a523 100644
--- a/app/app.qmlproject.user
+++ b/app/app.qmlproject.user
@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <!DOCTYPE QtCreatorProject>
-<!-- Written by QtCreator 3.0.1, 2014-05-08T21:05:06. -->
+<!-- Written by QtCreator 3.0.1, 2014-05-15T23:38:10. -->
 <qtcreator>
  <data>
   <variable>ProjectExplorer.Project.ActiveTarget</variable>