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@@ -0,0 +1,81 @@
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+import QtQuick 2.0
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+
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+Item {
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+ id: root
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+
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+ Image {
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+ id: noiseImage
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+ source: "noise.png";
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+ visible: false
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+ }
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+
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+ ShaderEffect {
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+ id: effect
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+ anchors.fill: parent
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+ property real time
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+ property real xRes: width
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+ property real yRes: height
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+ property real aspect: xRes / yRes
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+ property real cells: 15.0
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+ property real verticalCells: cells / aspect;
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+ property real yOffset: (verticalCells % 1.0) / verticalCells * 0.5;
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+ property variant noiseTexture: noiseImage
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+ NumberAnimation {
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+ target: effect
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+ property: "time"
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+ duration: 1000 * 60 * 5
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+ from: 0
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+ to: 60 * 5
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+ loops: Animation.Infinite
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+ running: true
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+ }
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+
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+ fragmentShader: "
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+#ifdef GL_ES
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+precision highp float;
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+precision lowp sampler2D;
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+#endif
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+
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+uniform highp float xRes;
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+uniform highp float yRes;
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+uniform highp float time;
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+varying highp vec2 qt_TexCoord0;
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+uniform sampler2D noiseTexture;
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+uniform float aspect;
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+uniform float cells;
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+uniform float verticalCells;
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+uniform float yOffset;
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+
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+void main()
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+{
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+ vec2 screenUv = qt_TexCoord0 - vec2(0.0, yOffset);
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+ vec2 t = screenUv * vec2(cells, verticalCells);
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+ vec2 cellUv = fract(t);
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+ vec2 cellCoord = t - cellUv;
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+ vec2 normalizedCellCoord = cellCoord / cells;
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+ float noise = texture2D(noiseTexture, normalizedCellCoord + vec2(0.11)).r;
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+// float noise2 = texture2D(noiseTexture, normalizedCellCoord - vec2(0.13)).r;
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+ float angle = noise * 30.0 + time * (0.5 + noise);
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+ float scale = 1.0 + noise * 2.0;
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+ float ca = cos(angle) * scale;
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+ float sa = sin(angle) * scale;
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+ mat2 rotate = mat2(ca, -sa,
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+ sa, ca);
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+ vec2 rotatedCellUv = rotate * (cellUv - 0.5);
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+ rotatedCellUv.x = fract(rotatedCellUv.x);
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+ float sharpness = 20.0 * scale / xRes;
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+ float v = smoothstep(0.25 - sharpness, 0.25, rotatedCellUv.x) -
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+ smoothstep(0.75 - sharpness, 0.75, rotatedCellUv.x);
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+
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+ float dim = 0.9 - pow(length(cellUv - 0.5), 3.2) * 2.5;
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+ float borderWidth = 0.04;
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+ if (cellUv.x > 1.0 - borderWidth || cellUv.y > 1.0 - borderWidth)
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+ dim = 0.0;
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+ if (cellUv.x < borderWidth || cellUv.y < borderWidth)
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+ dim = 0.0;
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+
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+ v *= dim;
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+ gl_FragColor = vec4(v, v, v, 1.0);
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+}"
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+ }
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+}
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