mirror of
https://github.com/Swordfish90/cool-retro-term.git
synced 2025-01-18 12:15:27 +00:00
Add subpixels rasterization and improve existing ones.
This commit is contained in:
Filippo Scognamiglio
parent
37ba495354
commit
293b05fec6
@ -89,6 +89,7 @@ QtObject{
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readonly property int no_rasterization: 0
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readonly property int scanline_rasterization: 1
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readonly property int pixel_rasterization: 2
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readonly property int subpixel_rasterization: 3
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property int rasterization: no_rasterization
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@ -113,6 +114,8 @@ QtObject{
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State { when: rasterization == scanline_rasterization
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PropertyChanges {target: fontManager; source: "FontScanlines.qml" } },
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State { when: rasterization == pixel_rasterization;
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PropertyChanges {target: fontManager; source: "FontPixels.qml" } },
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State { when: rasterization == subpixel_rasterization;
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PropertyChanges {target: fontManager; source: "FontPixels.qml" } }
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]
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@ -33,7 +33,7 @@ Tab{
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id: rasterizationBox
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property string selectedElement: model[currentIndex]
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anchors.fill: parent
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model: [qsTr("Default"), qsTr("Scanlines"), qsTr("Pixels")]
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model: [qsTr("Default"), qsTr("Scanlines"), qsTr("Pixels"), qsTr("Subpixels")]
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currentIndex: appSettings.rasterization
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onCurrentIndexChanged: {
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appSettings.rasterization = currentIndex
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@ -27,6 +27,7 @@ ShaderEffect {
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property ShaderEffectSource source
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property ShaderEffectSource blurredSource
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property ShaderEffectSource bloomSource
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property ShaderEffectSource rasterizationSource
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property color fontColor: appSettings.fontColor
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property color backgroundColor: appSettings.backgroundColor
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@ -58,12 +59,6 @@ ShaderEffect {
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property real screen_brightness: appSettings.brightness * 1.5 + 0.5
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// This is the average value of the abs(sin) function. Needed to avoid aliasing.
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readonly property real absSinAvg: 0.63661828335466886
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property size rasterizationSmooth: Qt.size(
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Utils.clamp(2.0 * virtual_resolution.width / (width * devicePixelRatio), 0.0, 1.0),
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Utils.clamp(2.0 * virtual_resolution.height / (height * devicePixelRatio), 0.0, 1.0))
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property real dispX
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property real dispY
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property size virtual_resolution
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@ -165,10 +160,12 @@ ShaderEffect {
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uniform lowp float screen_brightness;
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uniform highp vec2 virtual_resolution;
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uniform highp vec2 rasterizationSmooth;
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uniform highp float dispX;
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uniform highp float dispY;" +
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(appSettings.rasterization != appSettings.no_rasterization ?
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"uniform lowp sampler2D rasterizationSource;" : "") +
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(bloom !== 0 ? "
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uniform highp sampler2D bloomSource;
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uniform lowp float bloom;" : "") +
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@ -207,20 +204,7 @@ ShaderEffect {
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return fract(smoothstep(-120.0, 0.0, coords.y - (virtual_resolution.y + 120.0) * fract(time * 0.00015)));
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}" : "") +
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"highp float getScanlineIntensity(vec2 coords) {
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highp float result = 1.0;" +
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(appSettings.rasterization != appSettings.no_rasterization ?
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"float val = abs(sin(coords.y * virtual_resolution.y * "+Math.PI+"));
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result *= mix(val, " + absSinAvg + ", rasterizationSmooth.y);" : "") +
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(appSettings.rasterization == appSettings.pixel_rasterization ?
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"val = abs(sin(coords.x * virtual_resolution.x * "+Math.PI+"));
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result *= mix(val, " + absSinAvg + ", rasterizationSmooth.x);" : "") + "
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return result;
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}
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float min2(vec2 v) {
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"float min2(vec2 v) {
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return min(v.x, v.y);
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}
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@ -310,7 +294,9 @@ ShaderEffect {
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:
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"vec3 finalColor = mix(backgroundColor.rgb, fontColor.rgb, greyscale_color);") +
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"finalColor *= getScanlineIntensity(coords);" +
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(appSettings.rasterization != appSettings.no_rasterization ? "
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finalColor *= texture2D(rasterizationSource, staticCoords * (virtual_resolution)).rgb;
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" : "") +
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(bloom !== 0 ?
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"vec4 bloomFullColor = texture2D(bloomSource, coords);
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@ -69,64 +69,70 @@ ShaderTerminal{
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bloomSource: bloomSourceLoader.item
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// This shader might be useful in the future. Since we used it only for a couple
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// of calculations is probably best to move those in the main shader. If in the future
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// we need to store another fullScreen channel this might be handy.
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Loader {
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id: rasterizationEffectLoader
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active: appSettings.rasterization != appSettings.no_rasterization
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asynchronous: true
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sourceComponent: ShaderEffect {
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id: rasterizationEffect
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width: 16
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height: 16
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// ShaderEffect {
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// id: rasterizationEffect
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// width: parent.width
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// height: parent.height
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// property real outColor: 0.0
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// property real dispX: (5 / width) * appSettings.windowScaling
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// property real dispY: (5 / height) * appSettings.windowScaling
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// property size virtual_resolution: terminal.virtualResolution
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blending: false
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// blending: false
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fragmentShader:
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"uniform lowp float qt_Opacity;" +
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// fragmentShader:
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// "uniform lowp float qt_Opacity;" +
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"varying highp vec2 qt_TexCoord0;
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// "varying highp vec2 qt_TexCoord0;
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// uniform highp vec2 virtual_resolution;
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// uniform highp float dispX;
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// uniform highp float dispY;
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// uniform mediump float outColor;
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highp float getScanlineIntensity(vec2 coords) {
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highp float result = 1.0;" +
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// highp float getScanlineIntensity(vec2 coords) {
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// highp float result = 1.0;" +
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(appSettings.rasterization == appSettings.scanline_rasterization ?
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"result *= (smoothstep(0.0, 0.5, coords.y) - smoothstep(0.5, 1.0, coords.y));" : "") +
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// (appSettings.rasterization != appSettings.no_rasterization ?
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// "result *= abs(sin(coords.y * virtual_resolution.y * "+Math.PI+"));" : "") +
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// (appSettings.rasterization == appSettings.pixel_rasterization ?
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// "result *= abs(sin(coords.x * virtual_resolution.x * "+Math.PI+"));" : "") + "
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(appSettings.rasterization == appSettings.pixel_rasterization ?
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"result *= (smoothstep(0.0, 0.25, coords.y) - smoothstep(0.75, 1.0, coords.y));
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result *= (smoothstep(0.0, 0.25, coords.x) - smoothstep(0.75, 1.0, coords.x));" : "") +
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// return result;
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// }" +
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(appSettings.rasterization == appSettings.subpixel_rasterization ?
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"result *= (smoothstep(0.0, 0.25, coords.y) - smoothstep(0.75, 1.0, coords.y));" : "") + "
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// "void main() {" +
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// "highp float color = getScanlineIntensity(qt_TexCoord0);" +
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return result;
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}" +
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// "float distance = length(vec2(0.5) - qt_TexCoord0);" +
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// "color = mix(color, 0.0, 1.2 * distance * distance);" +
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"void main() {" +
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// "color *= outColor + smoothstep(0.00, dispX, qt_TexCoord0.x) * (1.0 - outColor);" +
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// "color *= outColor + smoothstep(0.00, dispY, qt_TexCoord0.y) * (1.0 - outColor);" +
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// "color *= outColor + (1.0 - smoothstep(1.00 - dispX, 1.00, qt_TexCoord0.x)) * (1.0 - outColor);" +
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// "color *= outColor + (1.0 - smoothstep(1.00 - dispY, 1.00, qt_TexCoord0.y)) * (1.0 - outColor);" +
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(appSettings.rasterization == appSettings.subpixel_rasterization ?
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"highp vec3 color = vec3(0.0);
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color += vec3(1.0, 0.25, 0.25) * (step(0.0, qt_TexCoord0.x) - step(1.0/3.0, qt_TexCoord0.x));
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color += vec3(0.25, 1.0, 0.25) * (step(1.0/3.0, qt_TexCoord0.x) - step(2.0/3.0, qt_TexCoord0.x));
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color += vec3(0.25, 0.25, 1.0) * (step(2.0/3.0, qt_TexCoord0.x) - step(3.0/3.0, qt_TexCoord0.x));"
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:
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"highp vec3 color = vec3(1.0);" ) +
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// "gl_FragColor.a = color;" +
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// "}"
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"color *= getScanlineIntensity(qt_TexCoord0);
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gl_FragColor = vec4(color, 1.0);" +
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"}"
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// onStatusChanged: if (log) console.log(log) //Print warning messages
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// }
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onStatusChanged: if (log) console.log(log) //Print warning messages
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}
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}
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// rasterizationSource: ShaderEffectSource{
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// id: rasterizationEffectSource
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// sourceItem: rasterizationEffect
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// hideSource: true
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// smooth: true
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// wrapMode: ShaderEffectSource.ClampToEdge
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// visible: false
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// }
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Loader {
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id: rasterizationSourceLoader
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active: appSettings.rasterization != appSettings.no_rasterization
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asynchronous: true
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sourceComponent: ShaderEffectSource {
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sourceItem: rasterizationEffectLoader.item
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hideSource: true
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smooth: true
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wrapMode: ShaderEffectSource.Repeat
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visible: false
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mipmap: true
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}
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}
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rasterizationSource: rasterizationSourceLoader.item
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}
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