Simplify the unholy overengineered mess of rasterization.

app/qml/ApplicationSettings.qml

@@ -99,7 +99,7 @@ Item{
 
     // FONTS //////////////////////////////////////////////////////////////////
 
-    signal terminalFontChanged(string fontSource, int pixelSize, int lineSpacing, size virtualCharSize)
+    signal terminalFontChanged(string fontSource, int pixelSize, int lineSpacing, real screenScaling)
 
     Loader{
         id: fontManager
@@ -141,9 +141,9 @@ Item{
         var fontSource = fontManager.item.source;
         var pixelSize = fontManager.item.pixelSize;
         var lineSpacing = fontManager.item.lineSpacing;
-        var virtualCharSize = fontManager.item.virtualCharSize;
+        var screenScaling = fontManager.item.screenScaling;
 
-        terminalFontChanged(fontSource, pixelSize, lineSpacing, virtualCharSize);
+        terminalFontChanged(fontSource, pixelSize, lineSpacing, screenScaling);
     }
 
     // FRAMES /////////////////////////////////////////////////////////////////

app/qml/FontPixels.qml

@@ -27,45 +27,47 @@ Item{
     property var _font: fontlist.get(selectedFontIndex)
     property var _scaling: fontScalingList[selectedScalingIndex]
     property var source: _font.source
-    property var fontScalingList: [0.75, 1.0, 1.25, 1.50, 1.75, 2.0, 2.25, 2.5]
+    property var fontScalingList: [0.5, 0.6, 0.7, 0.8, 0.9, 1.0, 1.1, 1.2, 1.3, 1.4, 1.5, 1.6, 1.7, 1.8, 1.9, 2.0, 2.1, 2.2, 2.3, 2.4, 2.5]
-    property int pixelSize: _font.pixelSize * _scaling
+    property int pixelSize: _font.pixelSize
-    property int lineSpacing: (_font.pixelSize / _font.virtualCharHeight) * _font.lineSpacing
+    property int lineSpacing: _font.lineSpacing
-    property size virtualCharSize: Qt.size(_font.virtualCharWidth,
+    property real screenScaling: _scaling * _font.baseScaling
-                                           _font.virtualCharHeight)
 
     ListModel{
         id: fontlist
+        ListElement{
+            text: "Commodore PET 2Y (1977)"
+            source: "fonts/1977-commodore-pet/COMMODORE_PET_2y.ttf"
+            lineSpacing: 2
+            pixelSize: 16
+            baseScaling: 3.0
+        }
         ListElement{
             text: "Commodore PET (1977)"
             source: "fonts/1977-commodore-pet/COMMODORE_PET.ttf"
             lineSpacing: 2
-            virtualCharWidth: 8
+            pixelSize: 8
-            virtualCharHeight: 8
+            baseScaling: 4.0
-            pixelSize: 32
         }
         ListElement{
             text: "Apple ][ (1977)"
             source: "fonts/1977-apple2/PrintChar21.ttf"
             lineSpacing: 2
-            virtualCharWidth: 7
+            pixelSize: 8
-            virtualCharHeight: 8
+            baseScaling: 4.0
-            pixelSize: 32
         }
         ListElement{
             text: "Atari 400-800 (1979)"
             source: "fonts/1979-atari-400-800/ATARI400800_original.TTF"
             lineSpacing: 3
-            virtualCharWidth: 8
+            pixelSize: 8
-            virtualCharHeight: 8
+            baseScaling: 4.0
-            pixelSize: 32
         }
         ListElement{
             text: "Commodore 64 (1982)"
             source: "fonts/1982-commodore64/C64_User_Mono_v1.0-STYLE.ttf"
             lineSpacing: 3
-            virtualCharWidth: 8
+            pixelSize: 8
-            virtualCharHeight: 8
+            baseScaling: 4.0
-            pixelSize: 32
         }
     }
 }

app/qml/FontScanlines.qml

@@ -27,11 +27,10 @@ Item{
     property var _font: fontlist.get(selectedFontIndex)
     property var _scaling: fontScalingList[selectedScalingIndex]
     property var source: _font.source
-    property var fontScalingList: [0.75, 1.0, 1.25, 1.50, 1.75, 2.0, 2.25, 2.50]
+    property var fontScalingList: [0.5, 0.6, 0.7, 0.8, 0.9, 1.0, 1.1, 1.2, 1.3, 1.4, 1.5, 1.6, 1.7, 1.8, 1.9, 2.0, 2.1, 2.2, 2.3, 2.4, 2.5]
-    property int pixelSize: _font.pixelSize * _scaling
+    property int pixelSize: _font.pixelSize
-    property int lineSpacing: (_font.pixelSize / _font.virtualCharHeight) * _font.lineSpacing
+    property int lineSpacing: _font.lineSpacing
-    property size virtualCharSize: Qt.size(_font.virtualCharWidth,
+    property real screenScaling: _scaling * _font.baseScaling
-                                           _font.virtualCharHeight)
 
     ListModel{
         id: fontlist
@@ -39,41 +38,36 @@ Item{
             text: "Commodore PET 2Y (1977)"
             source: "fonts/1977-commodore-pet/COMMODORE_PET_2y.ttf"
             lineSpacing: 2
-            virtualCharWidth: 4
+            pixelSize: 16
-            virtualCharHeight: 8
+            baseScaling: 3.0
-            pixelSize: 32
         }
         ListElement{
             text: "Commodore PET (1977)"
             source: "fonts/1977-commodore-pet/COMMODORE_PET.ttf"
             lineSpacing: 2
-            virtualCharWidth: 8
+            pixelSize: 8
-            virtualCharHeight: 8
+            baseScaling: 4.0
-            pixelSize: 32
         }
         ListElement{
             text: "Apple ][ (1977)"
             source: "fonts/1977-apple2/PrintChar21.ttf"
             lineSpacing: 2
-            virtualCharWidth: 8
+            pixelSize: 8
-            virtualCharHeight: 8
+            baseScaling: 4.0
-            pixelSize: 32
         }
         ListElement{
             text: "Atari 400-800 (1979)"
             source: "fonts/1979-atari-400-800/ATARI400800_original.TTF"
             lineSpacing: 3
-            virtualCharWidth: 8
+            pixelSize: 8
-            virtualCharHeight: 8
+            baseScaling: 4.0
-            pixelSize: 32
         }
         ListElement{
             text: "Commodore 64 (1982)"
             source: "fonts/1982-commodore64/C64_User_Mono_v1.0-STYLE.ttf"
             lineSpacing: 3
-            virtualCharWidth: 8
+            pixelSize: 8
-            virtualCharHeight: 8
+            baseScaling: 4.0
-            pixelSize: 32
         }
     }
 }

app/qml/Fonts.qml

@@ -30,6 +30,7 @@ Item{
     property var fontScalingList: [0.5, 0.6, 0.7, 0.8, 0.9, 1.0, 1.1, 1.2, 1.3, 1.4, 1.5, 1.6, 1.7, 1.8, 1.9, 2.0, 2.1, 2.2, 2.3, 2.4, 2.5]
     property int pixelSize: _font.pixelSize * _scaling
     property int lineSpacing: pixelSize * _font.lineSpacing
+    property real screenScaling: 1.0
 
     //In this configuration lineSpacing is proportional to pixelSize.
 

app/qml/PreprocessedTerminal.qml

@@ -46,9 +46,6 @@ Item{
     property real _maxBlurCoefficient: 0.90
 
     property size virtualPxSize: Qt.size(1,1)
-    property size virtual_resolution: Qt.size(width / virtualPxSize.width, height / virtualPxSize.height)
-    property real deltay: 0.5 / virtual_resolution.height
-    property real deltax: 0.5 / virtual_resolution.width
 
     property real mBloom: shadersettings.bloom_strength
     property int mScanlines: shadersettings.rasterization
@@ -73,8 +70,10 @@ Item{
 
     KTerminal {
         id: kterminal
-        anchors.fill: parent
+        width: parent.width
+        height: parent.height
 
+        smooth: false
         colorScheme: "cool-retro-term"
 
         session: KSession {
@@ -89,30 +88,15 @@ Item{
         FontLoader{ id: fontLoader }
         Text{id: fontMetrics; text: "B"; visible: false}
 
-        function getPaintedSize(pixelSize){
+        function handleFontChange(fontSource, pixelSize, lineSpacing, screenScaling){
-            fontMetrics.font.family = fontLoader.name;
-            fontMetrics.font.pixelSize = pixelSize;
-            return Qt.size(fontMetrics.paintedWidth, fontMetrics.paintedHeight);
-        }
-        function isValid(size){
-            return size.width >= 0 && size.height >= 0;
-        }
-        function handleFontChange(fontSource, pixelSize, lineSpacing, virtualCharSize){
             fontLoader.source = fontSource;
-            font.pixelSize = pixelSize * shadersettings.window_scaling;
+            font.pixelSize = pixelSize;
             font.family = fontLoader.name;
 
-            var paintedSize = getPaintedSize(pixelSize);
+            width = Qt.binding(function() {return Math.floor(terminalContainer.width / screenScaling);});
-            var charSize = isValid(virtualCharSize)
+            height = Qt.binding(function() {return Math.floor(terminalContainer.height / screenScaling);});
-                    ? virtualCharSize
-                    : Qt.size(paintedSize.width / 2, paintedSize.height / 2);
 
-            var virtualPxSize = Qt.size((paintedSize.width  / charSize.width) * shadersettings.window_scaling,
+            setLineSpacing(lineSpacing);
-                                        (paintedSize.height / charSize.height) * shadersettings.window_scaling)
-
-            terminalContainer.virtualPxSize = virtualPxSize;
-
-            setLineSpacing(lineSpacing * shadersettings.window_scaling);
             restartBlurredSource();
         }
         Component.onCompleted: {
@@ -178,8 +162,8 @@ Item{
             var cc = Qt.size(0.5 - x, 0.5 - y);
             var distortion = (cc.height * cc.height + cc.width * cc.width) * shadersettings.screen_distortion;
 
-            return Qt.point((x - cc.width  * (1+distortion) * distortion) * width,
+            return Qt.point((x - cc.width  * (1+distortion) * distortion) * kterminal.width,
-                           (y - cc.height * (1+distortion) * distortion) * height)
+                           (y - cc.height * (1+distortion) * distortion) * kterminal.height)
         }
     }
     ShaderEffectSource{
@@ -212,24 +196,24 @@ Item{
     ShaderEffectSource{
         id: finalSource
         sourceItem: blurredterminal
-        sourceRect: frame.sourceRect
+        //sourceRect: frame.sourceRect
         hideSource: true
+        //Smooth looks ugly when rasterization is used.
+        smooth: shadersettings.rasterization == shadersettings.no_rasterization
     }
     ShaderEffect {
         id: blurredterminal
-        anchors.fill: parent
+        anchors.fill: kterminal
         property variant source: source
         property variant blurredSource: (mBlur !== 0) ? blurredSource : undefined
         property real blurCoefficient: (1.0 - motionBlurCoefficient) * fpsAttenuation
-        property size virtual_resolution: parent.virtual_resolution
+        property size virtual_resolution: Qt.size(kterminal.width, kterminal.height)
-        property size delta: Qt.size((mScanlines == shadersettings.pixel_rasterization ? deltax : 0),
+
-                                     mScanlines != shadersettings.no_rasterization ? deltay : 0)
         blending: false
 
         fragmentShader:
             "uniform lowp float qt_Opacity;" +
             "uniform lowp sampler2D source;" +
-            "uniform highp vec2 delta;" +
 
             "varying highp vec2 qt_TexCoord0;
 
@@ -246,13 +230,6 @@ Item{
 
             "void main() {" +
                 "vec2 coords = qt_TexCoord0;" +
-                (mScanlines != shadersettings.no_rasterization ? "
-                            coords.y = floor(virtual_resolution.y * coords.y) / virtual_resolution.y;" +
-                (mScanlines == shadersettings.pixel_rasterization ? "
-                            coords.x = floor(virtual_resolution.x * coords.x) / virtual_resolution.x;" : "")
-                : "") +
-                "coords = coords + delta;" +
-
                 "vec4 color = texture2D(source, coords) * 256.0;
                  color.a = rgb2grey(color.rgb);" +
 
@@ -291,7 +268,7 @@ Item{
         sourceComponent: ShaderEffectSource{
             sourceItem: bloomEffectLoader.item
             hideSource: true
-            sourceRect: frame.sourceRect
+            //sourceRect: frame.sourceRect
             smooth: false
         }
     }
@@ -301,7 +278,7 @@ Item{
     ShaderEffect {
         id: staticNoiseEffect
         anchors.fill: parent
-        property size virtual_resolution: terminalContainer.virtual_resolution
+        property size virtual_resolution: Qt.size(kterminal.width, kterminal.height)
 
         blending: false
 
@@ -350,41 +327,84 @@ Item{
 
     // RASTERIZATION //////////////////////////////////////////////////////////
 
-    ShaderEffect{
+//    ShaderEffect{
-        id: rasterizationContainer
+//        id: rasterizationContainer
-        width: frame.sourceRect.width
+//        width: frame.sourceRect.width
-        height: frame.sourceRect.height
+//        height: frame.sourceRect.height
-        property size offset: Qt.size(width - rasterizationEffect.width, height - rasterizationEffect.height)
+//        property size offset: Qt.size(width - rasterizationEffect.width, height - rasterizationEffect.height)
-        property size txtRes: Qt.size(width, height)
+//        property size txtRes: Qt.size(width, height)
 
-        blending: false
+//        blending: false
 
-        fragmentShader:
+//        fragmentShader:
-            "uniform lowp float qt_Opacity;
+//            "uniform lowp float qt_Opacity;
-             uniform highp vec2 offset;
+//             uniform highp vec2 offset;
-             uniform highp vec2 txtRes;" +
+//             uniform highp vec2 txtRes;" +
 
-            "varying highp vec2 qt_TexCoord0;" +
+//            "varying highp vec2 qt_TexCoord0;" +
 
-            "void main() {" +
+//            "void main() {" +
-                "float color = 1.0;
+//                "float color = 1.0;
-                 color *= smoothstep(0.0, offset.x / txtRes.x, qt_TexCoord0.x);
+//                 color *= smoothstep(0.0, offset.x / txtRes.x, qt_TexCoord0.x);
-                 color *= smoothstep(0.0, offset.y / txtRes.y, qt_TexCoord0.y);
+//                 color *= smoothstep(0.0, offset.y / txtRes.y, qt_TexCoord0.y);
-                 color *= smoothstep(0.0, offset.x / txtRes.x, 1.0 - qt_TexCoord0.x);
+//                 color *= smoothstep(0.0, offset.x / txtRes.x, 1.0 - qt_TexCoord0.x);
-                 color *= smoothstep(0.0, offset.y / txtRes.y, 1.0 - qt_TexCoord0.y);" +
+//                 color *= smoothstep(0.0, offset.y / txtRes.y, 1.0 - qt_TexCoord0.y);" +
 
-                "float distance = length(vec2(0.5) - qt_TexCoord0);" +
+//                "float distance = length(vec2(0.5) - qt_TexCoord0);" +
-                "color = mix(color, 0.0, 1.2 * distance * distance);" +
+//                "color = mix(color, 0.0, 1.2 * distance * distance);" +
 
-                "gl_FragColor.a = color;" +
+//                "gl_FragColor.a = color;" +
-            "}"
+//            "}"
 
+//        ShaderEffect {
+//            id: rasterizationEffect
+//            width: terminalContainer.width
+//            height: terminalContainer.height
+//            anchors.centerIn: parent
+//            property size virtual_resolution: Qt.size(kterminal.width, kterminal.height)
+
+//            blending: false
+
+//            fragmentShader:
+//                "uniform lowp float qt_Opacity;" +
+
+//                "varying highp vec2 qt_TexCoord0;
+//                     uniform highp vec2 virtual_resolution;
+
+//                     float getScanlineIntensity(vec2 coords) {
+//                        float result = 1.0;" +
+//                        (mScanlines != shadersettings.no_rasterization ?
+//                            "result *= abs(sin(coords.y * virtual_resolution.y * "+Math.PI+"));" : "") +
+//                        (mScanlines == shadersettings.pixel_rasterization ?
+//                            "result *= abs(sin(coords.x * virtual_resolution.x * "+Math.PI+"));" : "") + "
+//                        return result;
+//                     }" +
+
+//            "void main() {" +
+//                "float color = getScanlineIntensity(qt_TexCoord0);" +
+
+//                "float distance = length(vec2(0.5) - qt_TexCoord0);" +
+//                "color = mix(color, 0.0, 1.2 * distance * distance);" +
+
+//                "gl_FragColor.a = color;" +
+//            "}"
+
+//            onStatusChanged: if (log) console.log(log) //Print warning messages
+//        }
+//        onStatusChanged: if (log) console.log(log) //Print warning messages
+//    }
+//    ShaderEffectSource{
+//        id: rasterizationEffectSource
+//        sourceItem: rasterizationContainer
+//        hideSource: true
+//        smooth: true
+//        //format: ShaderEffectSource.Alpha
+//    }
     ShaderEffect {
         id: rasterizationEffect
-            width: terminalContainer.width
+        width: parent.width * 2
-            height: terminalContainer.height
+        height: parent.height * 2
-            anchors.centerIn: parent
+        property size virtual_resolution: Qt.size(kterminal.width, kterminal.height)
-            property size virtual_resolution: terminalContainer.virtual_resolution
 
         blending: false
 
@@ -394,8 +414,8 @@ Item{
             "varying highp vec2 qt_TexCoord0;
                  uniform highp vec2 virtual_resolution;
 
-                     float getScanlineIntensity(vec2 coords) {
+                 highp float getScanlineIntensity(vec2 coords) {
-                        float result = 1.0;" +
+                    highp float result = 1.0;" +
                     (mScanlines != shadersettings.no_rasterization ?
                         "result *= abs(sin(coords.y * virtual_resolution.y * "+Math.PI+"));" : "") +
                     (mScanlines == shadersettings.pixel_rasterization ?
@@ -404,7 +424,7 @@ Item{
                  }" +
 
         "void main() {" +
-                "float color = getScanlineIntensity(qt_TexCoord0);" +
+            "highp float color = getScanlineIntensity(qt_TexCoord0);" +
 
             "float distance = length(vec2(0.5) - qt_TexCoord0);" +
             "color = mix(color, 0.0, 1.2 * distance * distance);" +
@@ -414,13 +434,10 @@ Item{
 
         onStatusChanged: if (log) console.log(log) //Print warning messages
     }
-        onStatusChanged: if (log) console.log(log) //Print warning messages
-    }
     ShaderEffectSource{
         id: rasterizationEffectSource
-        sourceItem: rasterizationContainer
+        sourceItem: rasterizationEffect
         hideSource: true
         smooth: true
-        //format: ShaderEffectSource.Alpha
     }
 }

app/qml/ShaderTerminal.qml

@@ -21,6 +21,7 @@
 import QtQuick 2.2
 import QtGraphicalEffects 1.0
 
+
 ShaderEffect {
     property color font_color: shadersettings.font_color
     property color background_color: shadersettings.background_color
@@ -103,8 +104,7 @@ ShaderEffect {
             uniform lowp float horizontal_sincronization;" : "") +
         "
         void main() {
-            qt_TexCoord0.x = -"+str(disp_left)+"/txt_Size.x + qt_MultiTexCoord0.x / ((txt_Size.x -("+str(disp_left+disp_right)+")) / txt_Size.x);" + "
+            qt_TexCoord0 = qt_MultiTexCoord0;
-            qt_TexCoord0.y = -"+str(disp_top)+"/txt_Size.y + qt_MultiTexCoord0.y / ((txt_Size.y -("+str(disp_top+disp_bottom)+")) / txt_Size.y);" + "
             vec2 coords = vec2(fract(time/(1024.0*2.0)), fract(time/(1024.0*1024.0)));" +
             (brightness_flickering !== 0.0 ? "
                 brightness = 1.0 + (texture2D(randomFunctionSource, coords).g - 0.5) * brightness_flickering;"

app/qml/main.qml

@@ -148,8 +148,6 @@ ApplicationWindow{
         width: parent.width * shadersettings.window_scaling
         height: parent.height * shadersettings.window_scaling
         scale: 1.0 / shadersettings.window_scaling
-        smooth: false
-        antialiasing: false
         opacity: shadersettings.windowOpacity * 0.3 + 0.7
 
         Loader{
@@ -164,7 +162,6 @@ ApplicationWindow{
         PreprocessedTerminal{
             id: terminal
             anchors.fill: parent
-            anchors.margins: 30
         }
         ShaderTerminal{
             id: shadercontainer

konsole-qml-plugin/src/TerminalDisplay.cpp

@@ -87,7 +87,7 @@ const ColorEntry base_color_table[TABLE_COLORS] =
 // scroll increment used when dragging selection at top/bottom of window.
 
 // static
-bool KTerminalDisplay::_antialiasText = true;
+bool KTerminalDisplay::_antialiasText = false;
 bool KTerminalDisplay::HAVE_TRANSPARENCY = true;
 
 // we use this to force QPainter to display text in LTR mode