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Code Issues Releases Wiki Activity

Important burn-in optimization. It is much lighter on resources.

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This commit is contained in:
Filippo Scognamiglio
2018-11-07 22:36:51 +01:00
parent 272bc5fe89
commit 92e82c203f
5 changed files with 151 additions and 135 deletions
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126
app/qml/BurnInEffect.qml Normal file
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@@ -0,0 +1,126 @@
import QtQuick 2.0
import "utils.js" as Utils
Item {
id: burnInEffect
readonly property alias source: burnInEffectSource
property real lastUpdate: 0
property real prevLastUpdate: 0
property real delay: (1.0 / appSettings.fps) * 1000
property real burnIn: appSettings.burnIn
property real burnInFadeTime: 1 / Utils.lint(_minBurnInFadeTime, _maxBurnInFadeTime, burnIn)
property real _minBurnInFadeTime: 160
property real _maxBurnInFadeTime: 1600
function completelyUpdate() {
prevLastUpdate = lastUpdate;
lastUpdate = timeManager.time;
burnInEffectSource.scheduleUpdate();
}
function restartBlurSource(){
prevLastUpdate = 0;
lastUpdate = 0;
completelyUpdate()
}
ShaderEffectSource {
id: burnInEffectSource
sourceItem: burnInShaderEffect
live: false
recursive: true
hideSource: true
wrapMode: kterminalSource.wrapMode
format: ShaderEffectSource.RGBA
visible: false
Connections {
target: kterminal
onImagePainted: completelyUpdate()
}
// Restart blurred source settings change.
Connections{
target: appSettings
onBurnInChanged: burnInEffect.restartBlurSource();
onTerminalFontChanged: burnInEffect.restartBlurSource();
onRasterizationChanged: burnInEffect.restartBlurSource();
onBurnInQualityChanged: burnInEffect.restartBlurSource();
}
Connections {
target: kterminalScrollbar
onOpacityChanged: burnInEffect.restartBlurSource()
}
}
ShaderEffect {
id: burnInShaderEffect
property int burnInScaling: scaleTexture * appSettings.burnInQuality
width: appSettings.lowResolutionFont
? kterminal.width * Math.max(1, burnInScaling)
: kterminal.width * scaleTexture * appSettings.burnInQuality
height: appSettings.lowResolutionFont
? kterminal.height * Math.max(1, burnInScaling)
: kterminal.height * scaleTexture * appSettings.burnInQuality
property variant txt_source: kterminalSource
property variant burnInSource: burnInEffectSource
property real burnInTime: burnInFadeTime
property alias lastUpdate: burnInEffect.lastUpdate
property alias prevLastUpdate: burnInEffect.prevLastUpdate
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 burnInSource;
uniform highp float burnInTime;
uniform highp float lastUpdate;
uniform highp float prevLastUpdate;" +
"float max3(vec3 v) {
return max (max (v.x, v.y), v.z);
}" +
"void main() {
vec2 coords = qt_TexCoord0;
vec3 txtColor = texture2D(txt_source, coords).rgb * 0.70;
vec4 accColor = texture2D(burnInSource, coords);
float prevMask = accColor.a;
float currMask = 1.0 - max3(txtColor);
highp float blurDecay = prevMask * clamp((lastUpdate - prevLastUpdate) * burnInTime, 0.0, 1.0);
vec3 blurColor = accColor.rgb - vec3(blurDecay);
blurColor = clamp(blurColor, vec3(0.0), vec3(1.0));
vec3 color = max(blurColor, txtColor);
gl_FragColor = vec4(color, currMask);
}
"
onStatusChanged: if (log) console.log(log) //Print warning messages
}
}

125
app/qml/PreprocessedTerminal.qml
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@@ -30,9 +30,9 @@ Item{
property size virtualResolution: Qt.size(kterminal.width, kterminal.height)
property alias mainTerminal: kterminal
property ShaderEffectSource mainSource: kterminalSource
property ShaderEffectSource blurredSource: blurredSourceLoader.item
property ShaderEffectSource mainSource: kterminalSource
property BurnInEffect burnInEffect: burnInEffect
property real fontWidth: 1.0
property real screenScaling: 1.0
property real scaleTexture: 1.0
@@ -44,14 +44,6 @@ Item{
anchors.topMargin: frame.displacementTop * appSettings.windowScaling
anchors.bottomMargin: frame.displacementBottom * appSettings.windowScaling
//Parameters for the burnIn effect.
property real burnIn: appSettings.burnIn
property real fps: appSettings.fps !== 0 ? appSettings.fps : 60
property real burnInFadeTime: Utils.lint(_minBurnInFadeTime, _maxBurnInFadeTime, burnIn)
property real motionBlurCoefficient: 1.0 / (fps * burnInFadeTime)
property real _minBurnInFadeTime: 0.16
property real _maxBurnInFadeTime: 1.6
property size terminalSize: kterminal.terminalSize
property size fontMetrics: kterminal.fontMetrics
@@ -232,117 +224,8 @@ Item{
visible: false
textureSize: Qt.size(kterminal.width * scaleTexture, kterminal.height * scaleTexture);
}
Loader{
id: blurredSourceLoader
asynchronous: true
active: burnIn !== 0
sourceComponent: ShaderEffectSource{
property bool updateBurnIn: false
id: _blurredSourceEffect
sourceItem: blurredTerminalLoader.item
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: updateBurnIn ? mainShader : null
ignoreUnknownSignals: false
onTimeChanged: _blurredSourceEffect.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: burnInFadeTime * 1000 * 1.1
running: true
onTriggered: _blurredSourceEffect.updateBurnIn = false;
}
Connections{
target: kterminal
onImagePainted:{
_blurredSourceEffect.scheduleUpdate();
_blurredSourceEffect.updateBurnIn = true;
livetimer.restart();
}
}
// Restart blurred source settings change.
Connections{
target: appSettings
onBurnInChanged: _blurredSourceEffect.restartBlurSource();
onTerminalFontChanged: _blurredSourceEffect.restartBlurSource();
onRasterizationChanged: _blurredSourceEffect.restartBlurSource();
onBurnInQualityChanged: _blurredSourceEffect.restartBlurSource();
}
Connections {
target: kterminalScrollbar
onOpacityChanged: _blurredSourceEffect.restartBlurSource();
}
}
}
Loader{
id: blurredTerminalLoader
property int burnInScaling: scaleTexture * appSettings.burnInQuality
width: appSettings.lowResolutionFont
? kterminal.width * Math.max(1, burnInScaling)
: kterminal.width * scaleTexture * appSettings.burnInQuality
height: appSettings.lowResolutionFont
? kterminal.height * Math.max(1, burnInScaling)
: kterminal.height * scaleTexture * appSettings.burnInQuality
active: burnIn !== 0
asynchronous: true
sourceComponent: ShaderEffect {
property variant txt_source: kterminalSource
property variant blurredSource: blurredSourceLoader.item
property real blurCoefficient: motionBlurCoefficient
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 blurCoefficient;" +
"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(blurCoefficient);" +
"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
}
BurnInEffect {
id: burnInEffect
}
}

25
app/qml/ShaderTerminal.qml
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@@ -25,7 +25,7 @@ import "utils.js" as Utils
ShaderEffect {
property ShaderEffectSource source
property ShaderEffectSource blurredSource
property BurnInEffect burnInEffect
property ShaderEffectSource bloomSource
property ShaderEffectSource rasterizationSource
@@ -33,7 +33,10 @@ ShaderEffect {
property color backgroundColor: appSettings.backgroundColor
property real bloom: appSettings.bloom * 2.0
property ShaderEffectSource burnInSource: burnInEffect.source
property real burnIn: appSettings.burnIn
property real burnInLastUpdate: burnInEffect.lastUpdate
property real burnInTime: burnInEffect.burnInFadeTime
property real jitter: appSettings.jitter * 0.007
property real staticNoise: appSettings.staticNoise
@@ -63,12 +66,7 @@ ShaderEffect {
property real dispY
property size virtual_resolution
TimeManager{
id: timeManager
enableTimer: terminalWindow.visible
}
property alias time: timeManager.time
property real time: timeManager.time
property ShaderEffectSource noiseSource: noiseShaderSource
// If something goes wrong activate the fallback version of the shader.
@@ -133,7 +131,7 @@ ShaderEffect {
qt_TexCoord0.y = (qt_MultiTexCoord0.y - disp_top) / (1.0 - disp_top - disp_bottom);
vec2 coords = vec2(fract(time/(1024.0*2.0)), fract(time/(1024.0*1024.0)));" +
(!fallBack && (flickering !== 0.0 || horizontalSync !== 0.0 || rgbShift !== 0) ?
(!fallBack && (flickering !== 0.0 || horizontalSync !== 0.0 || rbgShift !== 0) ?
"vec4 initialNoiseTexel = texture2D(noiseSource, coords);"
: "") +
@@ -178,7 +176,9 @@ ShaderEffect {
uniform highp sampler2D bloomSource;
uniform lowp float bloom;" : "") +
(burnIn !== 0 ? "
uniform sampler2D blurredSource;" : "") +
uniform sampler2D burnInSource;
uniform highp float burnInLastUpdate;
uniform highp float burnInTime;" : "") +
(staticNoise !== 0 ? "
uniform highp float staticNoise;" : "") +
(((staticNoise !== 0 || jitter !== 0 || rbgShift)
@@ -228,7 +228,7 @@ ShaderEffect {
"float distance = length(cc);" +
//FallBack if there are problems
(fallBack && (flickering !== 0.0 || horizontalSync !== 0.0) ?
(fallBack && (flickering !== 0.0 || horizontalSync !== 0.0 || rbgShift !== 0.0) ?
"vec2 initialCoords = vec2(fract(time/(1024.0*2.0)), fract(time/(1024.0*1024.0)));
vec4 initialNoiseTexel = texture2D(noiseSource, initialCoords);"
: "") +
@@ -292,8 +292,9 @@ ShaderEffect {
" : "") +
(burnIn !== 0 ? "
vec4 txt_blur = texture2D(blurredSource, txt_coords);
txt_color = max(txt_color, txt_blur.rgb * txt_blur.a);"
vec4 txt_blur = texture2D(burnInSource, txt_coords);
float blurDecay = clamp((time - burnInLastUpdate) * burnInTime, 0.0, 1.0);
txt_color = max(txt_color, txt_blur.rgb - vec3(blurDecay));"
: "") +
"txt_color += fontColor.rgb * color;" +

9
app/qml/TerminalContainer.qml
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@@ -3,7 +3,7 @@ import QtGraphicalEffects 1.0
import "utils.js" as Utils
ShaderTerminal{
ShaderTerminal {
property alias title: terminal.title
property alias terminalSize: terminal.terminalSize
@@ -13,11 +13,16 @@ ShaderTerminal{
blending: false
source: terminal.mainSource
blurredSource: terminal.blurredSource
burnInEffect: terminal.burnInEffect
dispX: (12 / width) * appSettings.windowScaling
dispY: (12 / height) * appSettings.windowScaling
virtual_resolution: terminal.virtualResolution
TimeManager{
id: timeManager
enableTimer: terminalWindow.visible
}
Loader{
id: frame
anchors.fill: parent

1
app/qml/resources.qrc
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@@ -51,5 +51,6 @@
<file>fonts/1981-ibm-pc/PxPlus_IBM_BIOS.ttf</file>
<file>fonts/1985-ibm-pc-vga/PxPlus_IBM_VGA8.ttf</file>
<file>fonts/1977-commodore-pet/PetMe.ttf</file>
<file>BurnInEffect.qml</file>
</qresource>
</RCC>