blurparticles.qml Example File

particles/customparticle/content/blurparticles.qml
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import QtQuick 2.0 import QtQuick.Particles 2.0 Rectangle { color: "white" width: 240 height: 360 ParticleSystem { id: sys } Emitter { system:sys height: parent.height emitRate: 1 lifeSpan: 12000 velocity: PointDirection {x:20;} size: 128 } ShaderEffectSource { id: theSource sourceItem: theItem hideSource: true } Image { id: theItem source: "../../images/starfish_1.png" } CustomParticle { system: sys vertexShader:" uniform lowp float qt_Opacity; varying lowp float fFade; varying lowp float fBlur; void main() { defaultMain(); highp float t = (qt_Timestamp - qt_ParticleData.x) / qt_ParticleData.y; highp float fadeIn = min(t * 10., 1.); highp float fadeOut = 1. - max(0., min((t - 0.75) * 4., 1.)); fFade = fadeIn * fadeOut * qt_Opacity; fBlur = max(0.2 * t, t * qt_ParticleR); } " property variant source: theSource property variant blurred: ShaderEffectSource { sourceItem: ShaderEffect { width: theItem.width height: theItem.height property variant delta: Qt.size(0.0, 1.0 / height) property variant source: ShaderEffectSource { sourceItem: ShaderEffect { width: theItem.width height: theItem.height property variant delta: Qt.size(1.0 / width, 0.0) property variant source: theSource fragmentShader: " uniform sampler2D source; uniform lowp float qt_Opacity; uniform highp vec2 delta; varying highp vec2 qt_TexCoord0; void main() { gl_FragColor =(0.0538 * texture2D(source, qt_TexCoord0 - 3.182 * delta) + 0.3229 * texture2D(source, qt_TexCoord0 - 1.364 * delta) + 0.2466 * texture2D(source, qt_TexCoord0) + 0.3229 * texture2D(source, qt_TexCoord0 + 1.364 * delta) + 0.0538 * texture2D(source, qt_TexCoord0 + 3.182 * delta)) * qt_Opacity; }" } } fragmentShader: " uniform sampler2D source; uniform lowp float qt_Opacity; uniform highp vec2 delta; varying highp vec2 qt_TexCoord0; void main() { gl_FragColor =(0.0538 * texture2D(source, qt_TexCoord0 - 3.182 * delta) + 0.3229 * texture2D(source, qt_TexCoord0 - 1.364 * delta) + 0.2466 * texture2D(source, qt_TexCoord0) + 0.3229 * texture2D(source, qt_TexCoord0 + 1.364 * delta) + 0.0538 * texture2D(source, qt_TexCoord0 + 3.182 * delta)) * qt_Opacity; }" } } fragmentShader: " uniform sampler2D source; uniform sampler2D blurred; varying highp vec2 qt_TexCoord0; varying highp float fBlur; varying highp float fFade; void main() { gl_FragColor = mix(texture2D(source, qt_TexCoord0), texture2D(blurred, qt_TexCoord0), min(1.0,fBlur*3.0)) * fFade; }" } }