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Add subpixels rasterization and improve existing ones.

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This commit is contained in:
Filippo Scognamiglio
2018-11-05 00:16:52 +01:00
parent 37ba495354
commit 293b05fec6
4 changed files with 65 additions and 70 deletions
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30
app/qml/ShaderTerminal.qml
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@@ -27,6 +27,7 @@ ShaderEffect {
property ShaderEffectSource source
property ShaderEffectSource blurredSource
property ShaderEffectSource bloomSource
property ShaderEffectSource rasterizationSource
property color fontColor: appSettings.fontColor
property color backgroundColor: appSettings.backgroundColor
@@ -58,12 +59,6 @@ ShaderEffect {
property real screen_brightness: appSettings.brightness * 1.5 + 0.5
// This is the average value of the abs(sin) function. Needed to avoid aliasing.
readonly property real absSinAvg: 0.63661828335466886
property size rasterizationSmooth: Qt.size(
Utils.clamp(2.0 * virtual_resolution.width / (width * devicePixelRatio), 0.0, 1.0),
Utils.clamp(2.0 * virtual_resolution.height / (height * devicePixelRatio), 0.0, 1.0))
property real dispX
property real dispY
property size virtual_resolution
@@ -165,10 +160,12 @@ ShaderEffect {
uniform lowp float screen_brightness;
uniform highp vec2 virtual_resolution;
uniform highp vec2 rasterizationSmooth;
uniform highp float dispX;
uniform highp float dispY;" +
(appSettings.rasterization != appSettings.no_rasterization ?
"uniform lowp sampler2D rasterizationSource;" : "") +
(bloom !== 0 ? "
uniform highp sampler2D bloomSource;
uniform lowp float bloom;" : "") +
@@ -207,20 +204,7 @@ ShaderEffect {
return fract(smoothstep(-120.0, 0.0, coords.y - (virtual_resolution.y + 120.0) * fract(time * 0.00015)));
}" : "") +
"highp float getScanlineIntensity(vec2 coords) {
highp float result = 1.0;" +
(appSettings.rasterization != appSettings.no_rasterization ?
"float val = abs(sin(coords.y * virtual_resolution.y * "+Math.PI+"));
result *= mix(val, " + absSinAvg + ", rasterizationSmooth.y);" : "") +
(appSettings.rasterization == appSettings.pixel_rasterization ?
"val = abs(sin(coords.x * virtual_resolution.x * "+Math.PI+"));
result *= mix(val, " + absSinAvg + ", rasterizationSmooth.x);" : "") + "
return result;
}
float min2(vec2 v) {
"float min2(vec2 v) {
return min(v.x, v.y);
}
@@ -310,7 +294,9 @@ ShaderEffect {
:
"vec3 finalColor = mix(backgroundColor.rgb, fontColor.rgb, greyscale_color);") +
"finalColor *= getScanlineIntensity(coords);" +
(appSettings.rasterization != appSettings.no_rasterization ? "
finalColor *= texture2D(rasterizationSource, staticCoords * (virtual_resolution)).rgb;
" : "") +
(bloom !== 0 ?
"vec4 bloomFullColor = texture2D(bloomSource, coords);