Remove slow burn-in effect.

app/qml/ApplicationSettings.qml

@@ -54,9 +54,7 @@ QtObject {
     property bool verbose: false
 
     property real bloomQuality: 0.5
-
     property real burnInQuality: 0.5
-    property bool useFastBurnIn: true
 
     property bool blinkingCursor: false
 
@@ -244,8 +242,7 @@ QtObject {
             "bloomQuality": bloomQuality,
             "burnInQuality": burnInQuality,
             "useCustomCommand": useCustomCommand,
-            "customCommand": customCommand,
+            "customCommand": customCommand
-            "useFastBurnIn": useFastBurnIn
         }
         return stringify(settings)
     }
@@ -340,9 +337,6 @@ QtObject {
                 !== undefined ? settings.useCustomCommand : useCustomCommand
         customCommand = settings.customCommand
                 !== undefined ? settings.customCommand : customCommand
-
-        useFastBurnIn = settings.useFastBurnIn
-                !== undefined ? settings.useFastBurnIn : useFastBurnIn
     }
 
     function loadProfileString(profileString) {

app/qml/BurnInEffect.qml

@@ -35,7 +35,7 @@ Loader {
     property real _minBurnInFadeTime: appSettings.minBurnInFadeTime
     property real _maxBurnInFadeTime: appSettings.maxBurnInFadeTime
 
-    active: appSettings.useFastBurnIn && appSettings.burnIn !== 0
+    active: appSettings.burnIn !== 0
 
     anchors.fill: parent
 

app/qml/PreprocessedTerminal.qml

@@ -34,7 +34,6 @@ Item{
 
     property ShaderEffectSource mainSource: kterminalSource
     property BurnInEffect burnInEffect: burnInEffect
-    property SlowBurnIn slowBurnInEffect: slowBurnInEffect
     property real fontWidth: 1.0
     property real screenScaling: 1.0
     property real scaleTexture: 1.0
@@ -276,9 +275,5 @@ Item{
         BurnInEffect {
             id: burnInEffect
         }
-
-        SlowBurnIn {
-            id: slowBurnInEffect
-        }
     }
 }

app/qml/SettingsAdvancedTab.qml

@@ -154,12 +154,6 @@ ColumnLayout {
             Label {
                 text: Math.round(burnInSlider.value * 100) + "%"
             }
-            CheckBox {
-                Layout.columnSpan: 2
-                text: qsTr("Burnin optimization (Might display timing artifacts)")
-                checked: appSettings.useFastBurnIn
-                onCheckedChanged: appSettings.useFastBurnIn = checked
-            }
         }
     }
 }

app/qml/ShaderTerminal.qml

@@ -24,7 +24,6 @@ import QtGraphicalEffects 1.0
 import "utils.js" as Utils
 
 Item {
-    property SlowBurnIn slowBurnInEffect
     property ShaderEffectSource source
     property BurnInEffect burnInEffect
     property ShaderEffectSource bloomSource
@@ -67,14 +66,10 @@ Item {
          property real glowingLine: appSettings.glowingLine * 0.2
 
          // Fast burnin properties
-         property real burnIn: appSettings.useFastBurnIn ? appSettings.burnIn : 0
+         property real burnIn: appSettings.burnIn
          property real burnInLastUpdate: burnInEffect.lastUpdate
          property real burnInTime: burnInEffect.burnInFadeTime
 
-         // Slow burnin properties
-         property real slowBurnIn: appSettings.useFastBurnIn ? 0 : appSettings.burnIn
-         property ShaderEffectSource slowBurnInSource: slowBurnInEffect.source
-
          property real jitter: appSettings.jitter
          property size jitterDisplacement: Qt.size(0.007 * jitter, 0.002 * jitter)
          property real shadowLength: 0.25 * screenCurvature * Utils.lint(0.50, 1.5, ambientLight)
@@ -185,8 +180,6 @@ Item {
                  uniform sampler2D burnInSource;
                  uniform highp float burnInLastUpdate;
                  uniform highp float burnInTime;" : "") +
-             (slowBurnIn !== 0 ? "
-                 uniform sampler2D slowBurnInSource;" : "") +
              (staticNoise !== 0 ? "
                  uniform highp float staticNoise;" : "") +
              (((staticNoise !== 0 || jitter !== 0) ||(fallBack && (flickering || horizontalSync))) ? "
@@ -314,11 +307,6 @@ Item {
                      txt_color = max(txt_color, convertWithChroma(burnInColor));"
                  : "") +
 
-                 (slowBurnIn !== 0 ? "
-                     vec4 txt_blur = texture2D(slowBurnInSource, staticCoords);
-                     txt_color = max(txt_color, convertWithChroma(txt_blur.rgb * txt_blur.a));
-                 " : "") +
-
                   "txt_color += fontColor.rgb * vec3(color);" +
 
                   "txt_color = applyRasterization(staticCoords, txt_color, virtualResolution, rasterizationIntensity);\n" +

app/qml/SlowBurnIn.qml

@@ -1,157 +0,0 @@
-/*******************************************************************************
-* Copyright (c) 2013-2021 "Filippo Scognamiglio"
-* https://github.com/Swordfish90/cool-retro-term
-*
-* This file is part of cool-retro-term.
-*
-* cool-retro-term is free software: you can redistribute it and/or modify
-* it under the terms of the GNU General Public License as published by
-* the Free Software Foundation, either version 3 of the License, or
-* (at your option) any later version.
-*
-* This program is distributed in the hope that it will be useful,
-* but WITHOUT ANY WARRANTY; without even the implied warranty of
-* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-* GNU General Public License for more details.
-*
-* You should have received a copy of the GNU General Public License
-* along with this program.  If not, see <http://www.gnu.org/licenses/>.
-*******************************************************************************/
-
-import QtQuick 2.0
-
-import "utils.js" as Utils
-
-Loader {
-    property ShaderEffectSource source: item ? item.source : null
-
-    active: !appSettings.useFastBurnIn && appSettings.burnIn !== 0
-    anchors.fill: parent
-
-    sourceComponent: Item {
-        property alias source: burnInSourceEffect
-        property int burnInScaling: scaleTexture * appSettings.burnInQuality
-
-        ShaderEffectSource {
-            property bool updateBurnIn: false
-            property real burnIn: appSettings.burnIn
-            property real fps: appSettings.fps !== 0 ? appSettings.fps : 60
-            property real burnInFadeTime: Utils.lint(minBurnInFadeTime, maxBurnInFadeTime, burnIn)
-            property real burnInCoefficient: 1000 / (fps * burnInFadeTime)
-            property real minBurnInFadeTime: appSettings.minBurnInFadeTime
-            property real maxBurnInFadeTime: appSettings.maxBurnInFadeTime
-
-            id: burnInSourceEffect
-
-            anchors.fill: parent
-
-            sourceItem: burnInEffect
-            recursive: true
-            live: false
-            hideSource: true
-            wrapMode: kterminalSource.wrapMode
-
-            visible: false
-
-            function restartBlurSource(){
-                livetimer.restart();
-            }
-
-            // This updates the burnin synched with the timer.
-            Connections {
-                target: burnInSourceEffect.updateBurnIn ? timeManager : null
-                ignoreUnknownSignals: false
-
-                function onTimeChanged() {
-                    burnInSourceEffect.scheduleUpdate()
-                }
-            }
-
-            Timer {
-                id: livetimer
-
-                // The interval assumes 60 fps. This is the time needed burnout a white pixel.
-                // We multiply 1.1 to have a little bit of margin over the theoretical value.
-                // This solution is not extremely clean, but it's probably the best to avoid measuring fps.
-
-                interval: burnInSourceEffect.burnInFadeTime * 1.1
-                running: true
-                onTriggered: burnInSourceEffect.updateBurnIn = false;
-            }
-            Connections {
-                target: kterminal
-
-                function onImagePainted() {
-                    burnInSourceEffect.scheduleUpdate();
-                    burnInSourceEffect.updateBurnIn = true;
-                    livetimer.restart();
-                }
-            }
-            // Restart blurred source settings change.
-            Connections {
-                target: appSettings
-
-                function onBurnInChanged() {
-                    burnInSourceEffect.restartBlurSource()
-                }
-
-                function onTerminalFontChanged() {
-                    burnInSourceEffect.restartBlurSource()
-                }
-
-                function onRasterizationChanged() {
-                    burnInSourceEffect.restartBlurSource()
-                }
-
-                function onBurnInQualityChanged() {
-                    burnInSourceEffect.restartBlurSource()
-                }
-            }
-            Connections {
-                target: kterminalScrollbar
-
-                function onOpacityChanged() {
-                    burnInSourceEffect.restartBlurSource()
-                }
-            }
-
-            ShaderEffect {
-                id: burnInEffect
-
-                property variant txt_source: kterminalSource
-                property variant blurredSource: burnInSourceEffect
-                property real burnInCoefficient: burnInSourceEffect.burnInCoefficient
-
-                anchors.fill: parent
-                blending: false
-
-                fragmentShader:
-                    "#ifdef GL_ES
-                        precision mediump float;
-                    #endif\n" +
-
-                    "uniform lowp float qt_Opacity;" +
-                    "uniform lowp sampler2D txt_source;" +
-
-                    "varying highp vec2 qt_TexCoord0;
-                     uniform lowp sampler2D blurredSource;
-                     uniform highp float burnInCoefficient;" +
-
-                    "float max3(vec3 v) {
-                         return max (max (v.x, v.y), v.z);
-                    }" +
-
-                    "void main() {" +
-                        "vec2 coords = qt_TexCoord0;" +
-                        "vec3 origColor = texture2D(txt_source, coords).rgb;" +
-                        "vec3 blur_color = texture2D(blurredSource, coords).rgb - vec3(burnInCoefficient);" +
-                        "vec3 color = min(origColor + blur_color, max(origColor, blur_color));" +
-
-                        "gl_FragColor = vec4(color, max3(color - origColor));" +
-                    "}"
-
-                onStatusChanged: if (log) console.log(log) //Print warning messages
-            }
-        }
-    }
-}

app/qml/TerminalContainer.qml

@@ -33,7 +33,6 @@ ShaderTerminal {
 
     source: terminal.mainSource
     burnInEffect: terminal.burnInEffect
-    slowBurnInEffect: terminal.slowBurnInEffect
     virtualResolution: terminal.virtualResolution
     screenResolution: Qt.size(
         terminalWindow.width * devicePixelRatio * appSettings.windowScaling,

app/qml/resources.qrc

@@ -41,7 +41,6 @@
         <file>BurnInEffect.qml</file>
         <file>fonts/modern-terminus/TerminusTTF-4.46.0.ttf</file>
         <file>TerminalFrame.qml</file>
-        <file>SlowBurnIn.qml</file>
         <file>menus/WindowMenu.qml</file>
         <file>menus/FullContextMenu.qml</file>
         <file>menus/ShortContextMenu.qml</file>