mirror of
https://github.com/Swordfish90/cool-retro-term.git
synced 2024-09-18 00:01:06 +02:00
338 lines
13 KiB
QML
338 lines
13 KiB
QML
/*******************************************************************************
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* Copyright (c) 2013 "Filippo Scognamiglio"
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* https://github.com/Swordfish90/cool-retro-term
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*
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* This file is part of cool-retro-term.
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*
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* cool-retro-term is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*******************************************************************************/
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import QtQuick 2.2
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import QtGraphicalEffects 1.0
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import "utils.js" as Utils
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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 color fontColor: appSettings.fontColor
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property color backgroundColor: appSettings.backgroundColor
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property real bloom: appSettings.bloom * 2.5
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property real burnIn: appSettings.burnIn
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property real jitter: appSettings.jitter * 0.007
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property real staticNoise: appSettings.staticNoise
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property size scaleNoiseSize: Qt.size((width) / (noiseTexture.width * appSettings.windowScaling * appSettings.fontScaling),
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(height) / (noiseTexture.height * appSettings.windowScaling * appSettings.fontScaling))
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property real screenCurvature: appSettings.screenCurvature
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property real glowingLine: appSettings.glowingLine * 0.2
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property real chromaColor: appSettings.chromaColor;
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property real rbgShift: appSettings.rbgShift * 0.2
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property real flickering: appSettings.flickering
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property real horizontalSync: appSettings.horizontalSync * 0.5
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property bool frameReflections: appSettings.frameReflections
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property real disp_top: (frame.displacementTop * appSettings.windowScaling) / height
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property real disp_bottom: (frame.displacementBottom * appSettings.windowScaling) / height
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property real disp_left: (frame.displacementLeft * appSettings.windowScaling) / width
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property real disp_right: (frame.displacementRight * appSettings.windowScaling) / width
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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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TimeManager{
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id: timeManager
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enableTimer: terminalWindow.visible
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}
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property alias time: timeManager.time
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property ShaderEffectSource noiseSource: noiseShaderSource
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// If something goes wrong activate the fallback version of the shader.
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property bool fallBack: false
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blending: false
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//Smooth random texture used for flickering effect.
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Image{
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id: noiseTexture
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source: "images/allNoise512.png"
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width: 512
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height: 512
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fillMode: Image.Tile
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visible: false
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}
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ShaderEffectSource{
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id: noiseShaderSource
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sourceItem: noiseTexture
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wrapMode: ShaderEffectSource.Repeat
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visible: false
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smooth: true
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}
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//Print the number with a reasonable precision for the shader.
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function str(num){
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return num.toFixed(8);
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}
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vertexShader: "
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uniform highp mat4 qt_Matrix;
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uniform highp float time;
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uniform highp float disp_left;
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uniform highp float disp_right;
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uniform highp float disp_top;
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uniform highp float disp_bottom;
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attribute highp vec4 qt_Vertex;
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attribute highp vec2 qt_MultiTexCoord0;
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varying highp vec2 qt_TexCoord0;" +
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(!fallBack ? "
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uniform sampler2D noiseSource;" : "") +
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(!fallBack && flickering !== 0.0 ?"
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varying lowp float brightness;
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uniform lowp float flickering;" : "") +
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(!fallBack && horizontalSync !== 0.0 ?"
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uniform lowp float horizontalSync;
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varying lowp float distortionScale;
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varying lowp float distortionFreq;" : "") +
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"
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void main() {
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qt_TexCoord0.x = (qt_MultiTexCoord0.x - disp_left) / (1.0 - disp_left - disp_right);
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qt_TexCoord0.y = (qt_MultiTexCoord0.y - disp_top) / (1.0 - disp_top - disp_bottom);
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vec2 coords = vec2(fract(time/(1024.0*2.0)), fract(time/(1024.0*1024.0)));" +
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(!fallBack && (flickering !== 0.0 || horizontalSync !== 0.0) ?
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"vec4 initialNoiseTexel = texture2D(noiseSource, coords);"
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: "") +
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(!fallBack && flickering !== 0.0 ? "
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brightness = 1.0 + (initialNoiseTexel.g - 0.5) * flickering;"
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: "") +
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(!fallBack && horizontalSync !== 0.0 ? "
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float randval = horizontalSync - initialNoiseTexel.r;
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distortionScale = step(0.0, randval) * randval * horizontalSync;
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distortionFreq = mix(4.0, 40.0, initialNoiseTexel.g);"
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: "") +
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"gl_Position = qt_Matrix * qt_Vertex;
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}"
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fragmentShader: "
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#ifdef GL_ES
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precision mediump float;
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#endif
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uniform sampler2D source;
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uniform highp float qt_Opacity;
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uniform highp float time;
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varying highp vec2 qt_TexCoord0;
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uniform highp vec4 fontColor;
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uniform highp vec4 backgroundColor;
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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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(bloom !== 0 ? "
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uniform highp sampler2D bloomSource;
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uniform lowp float bloom;" : "") +
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(burnIn !== 0 ? "
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uniform sampler2D blurredSource;" : "") +
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(staticNoise !== 0 ? "
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uniform highp float staticNoise;" : "") +
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(((staticNoise !== 0 || jitter !== 0 || rbgShift)
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||(fallBack && (flickering || horizontalSync))) ? "
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uniform lowp sampler2D noiseSource;
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uniform highp vec2 scaleNoiseSize;" : "") +
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(screenCurvature !== 0 ? "
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uniform highp float screenCurvature;" : "") +
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(glowingLine !== 0 ? "
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uniform highp float glowingLine;" : "") +
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(chromaColor !== 0 ? "
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uniform lowp float chromaColor;" : "") +
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(jitter !== 0 ? "
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uniform lowp float jitter;" : "") +
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(rbgShift !== 0 ? "
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uniform lowp float rbgShift;" : "") +
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(fallBack && horizontalSync !== 0 ? "
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uniform lowp float horizontalSync;" : "") +
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(fallBack && flickering !== 0.0 ?"
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uniform lowp float flickering;" : "") +
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(!fallBack && flickering !== 0 ? "
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varying lowp float brightness;"
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: "") +
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(!fallBack && horizontalSync !== 0 ? "
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varying lowp float distortionScale;
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varying lowp float distortionFreq;" : "") +
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(glowingLine !== 0 ? "
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float randomPass(vec2 coords){
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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 rgb2grey(vec3 v){
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return dot(v, vec3(0.21, 0.72, 0.04));
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}" +
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"void main() {" +
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"vec2 cc = vec2(0.5) - qt_TexCoord0;" +
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"float distance = length(cc);" +
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//FallBack if there are problems
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(fallBack && (flickering !== 0.0 || horizontalSync !== 0.0) ?
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"vec2 initialCoords = vec2(fract(time/(1024.0*2.0)), fract(time/(1024.0*1024.0)));
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vec4 initialNoiseTexel = texture2D(noiseSource, initialCoords);"
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: "") +
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(fallBack && flickering !== 0.0 ? "
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float brightness = 1.0 + (initialNoiseTexel.g - 0.5) * flickering;"
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: "") +
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(fallBack && horizontalSync !== 0.0 ? "
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float randval = horizontalSync - initialNoiseTexel.r;
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float distortionScale = step(0.0, randval) * randval * horizontalSync;
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float distortionFreq = mix(4.0, 40.0, initialNoiseTexel.g);"
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: "") +
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(staticNoise ? "
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float noise = staticNoise;" : "") +
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(screenCurvature !== 0 ? "
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float distortion = dot(cc, cc) * screenCurvature;
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vec2 staticCoords = (qt_TexCoord0 - cc * (1.0 + distortion) * distortion);"
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:"
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vec2 staticCoords = qt_TexCoord0;") +
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"vec2 coords = staticCoords;" +
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(horizontalSync !== 0 ? "
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float dst = sin((coords.y + time * 0.001) * distortionFreq);
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coords.x += dst * distortionScale;" +
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(staticNoise ? "
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noise += distortionScale * 7.0;" : "")
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: "") +
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(jitter !== 0 || staticNoise !== 0 ?
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"vec4 noiseTexel = texture2D(noiseSource, scaleNoiseSize * coords + vec2(fract(time / 51.0), fract(time / 237.0)));"
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: "") +
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(jitter !== 0 ? "
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vec2 offset = vec2(noiseTexel.b, noiseTexel.a) - vec2(0.5);
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vec2 txt_coords = coords + offset * jitter;"
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: "vec2 txt_coords = coords;") +
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"float color = 0.0;" +
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(staticNoise !== 0 ? "
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float noiseVal = noiseTexel.a;
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color += noiseVal * noise * (1.0 - distance * 1.3);" : "") +
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(glowingLine !== 0 ? "
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color += randomPass(coords * virtual_resolution) * glowingLine;" : "") +
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"vec3 txt_color = texture2D(source, txt_coords).rgb;" +
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(burnIn !== 0 ? "
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vec4 txt_blur = texture2D(blurredSource, txt_coords);
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txt_color = txt_color + txt_blur.rgb * txt_blur.a;"
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: "") +
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"float greyscale_color = rgb2grey(txt_color) + color;" +
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(chromaColor !== 0 ?
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(rbgShift !== 0 ? "
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float rgb_noise = abs(texture2D(noiseSource, vec2(fract(time/(1024.0 * 256.0)), fract(time/(1024.0*1024.0)))).a - 0.5);
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float rcolor = texture2D(source, txt_coords + vec2(0.1, 0.0) * rbgShift * rgb_noise).r;
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float bcolor = texture2D(source, txt_coords - vec2(0.1, 0.0) * rbgShift * rgb_noise).b;
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txt_color.r = rcolor;
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txt_color.b = bcolor;
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greyscale_color = 0.33 * (rcolor + bcolor);" : "") +
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"vec3 mixedColor = mix(fontColor.rgb, txt_color * fontColor.rgb, chromaColor);
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vec3 finalBackColor = mix(backgroundColor.rgb, mixedColor, greyscale_color);
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vec3 finalColor = mix(finalBackColor, fontColor.rgb, color).rgb;"
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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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(bloom !== 0 ?
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"vec4 bloomFullColor = texture2D(bloomSource, coords);
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vec3 bloomColor = bloomFullColor.rgb;
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float bloomAlpha = bloomFullColor.a;" +
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(chromaColor !== 0 ?
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"bloomColor = fontColor.rgb * mix(vec3(rgb2grey(bloomColor)), bloomColor, chromaColor);"
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:
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"bloomColor = fontColor.rgb * rgb2grey(bloomColor);") +
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"finalColor += bloomColor * bloom * bloomAlpha;"
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: "") +
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"finalColor *= smoothstep(-dispX, 0.0, staticCoords.x) - smoothstep(1.0, 1.0 + dispX, staticCoords.x);
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finalColor *= smoothstep(-dispY, 0.0, staticCoords.y) - smoothstep(1.0, 1.0 + dispY, staticCoords.y);" +
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(flickering !== 0 ? "
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finalColor *= brightness;" : "") +
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"gl_FragColor = vec4(finalColor * screen_brightness, qt_Opacity);" +
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"}"
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onStatusChanged: {
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// Print warning messages
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if (log)
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console.log(log);
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// Activate fallback mode
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if (status == ShaderEffect.Error) {
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fallBack = true;
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}
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}
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}
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