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Diffstat (limited to 'src/effects/FastBlur.qml')
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diff --git a/src/effects/FastBlur.qml b/src/effects/FastBlur.qml deleted file mode 100644 index 6b7021f..0000000 --- a/src/effects/FastBlur.qml +++ /dev/null @@ -1,446 +0,0 @@ -/**************************************************************************** -** -** Copyright (C) 2020 The Qt Company Ltd. -** Contact: https://www.qt.io/licensing/ -** -** This file is part of the Qt Graphical Effects module of the Qt Toolkit. -** -** $QT_BEGIN_LICENSE:BSD$ -** Commercial License Usage -** Licensees holding valid commercial Qt licenses may use this file in -** accordance with the commercial license agreement provided with the -** Software or, alternatively, in accordance with the terms contained in -** a written agreement between you and The Qt Company. For licensing terms -** and conditions see https://www.qt.io/terms-conditions. For further -** information use the contact form at https://www.qt.io/contact-us. -** -** BSD License Usage -** Alternatively, you may use this file under the terms of the BSD license -** as follows: -** -** "Redistribution and use in source and binary forms, with or without -** modification, are permitted provided that the following conditions are -** met: -** * Redistributions of source code must retain the above copyright -** notice, this list of conditions and the following disclaimer. -** * Redistributions in binary form must reproduce the above copyright -** notice, this list of conditions and the following disclaimer in -** the documentation and/or other materials provided with the -** distribution. -** * Neither the name of The Qt Company Ltd nor the names of its -** contributors may be used to endorse or promote products derived -** from this software without specific prior written permission. -** -** -** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS -** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT -** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR -** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT -** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, -** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT -** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, -** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY -** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT -** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE -** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE." -** -** $QT_END_LICENSE$ -** -****************************************************************************/ - -import QtQuick 2.12 -import QtGraphicalEffects.private 1.12 - -/*! - \qmltype FastBlur - \inqmlmodule QtGraphicalEffects - \since QtGraphicalEffects 1.0 - \inherits QtQuick2::Item - \ingroup qtgraphicaleffects-blur - \brief Applies a fast blur effect to one or more source items. - - The FastBlur effect softens the source content by blurring it with algorithm - which uses the source content downscaling and bilinear filtering. - - \table - \header - \li Source - \li Effect applied - \row - \li \image Original_bug.png - \li \image FastBlur_bug.png - \endtable - - \section1 Example - - The following example shows how to apply the effect. - \snippet FastBlur-example.qml example - -*/ -Item { - id: rootItem - - /*! - This property defines the source item that is going to be blurred. - - \note It is not supported to let the effect include itself, for - instance by setting source to the effect's parent. - */ - property variant source - - /*! - This property defines the distance of the neighboring pixels which affect - the blurring of an individual pixel. A larger radius increases the blur - effect. FastBlur algorithm may internally reduce the accuracy of the radius in order to - provide good rendering performance. - - The value ranges from 0.0 (no blur) to inf. Visual quality of the blur is reduced when - radius exceeds value 64. By default, the property is set to \c 0.0 (no blur). - - \table - \header - \li Output examples with different blur values - \li - \li - \row - \li \image FastBlur_radius1.png - \li \image FastBlur_radius2.png - \li \image FastBlur_radius3.png - \row - \li \b { radius: 0 } - \li \b { radius: 32 } - \li \b { radius: 64 } - \endtable - */ - property real radius: 0.0 - - /*! - This property defines the blur behavior near the edges of the item, - where the pixel blurring is affected by the pixels outside the source - edges. - - If the property is set to \c true, the pixels outside the source are - interpreted to be transparent, which is similar to OpenGL - clamp-to-border extension. The blur is expanded slightly outside the - effect item area. - - If the property is set to \c false, the pixels outside the source are - interpreted to contain the same color as the pixels at the edge of the - item, which is similar to OpenGL clamp-to-edge behavior. The blur does - not expand outside the effect item area. - - By default, the property is set to \c false. - - \table - \header - \li Output examples with different transparentBorder values - \li - \li - \row - \li \image FastBlur_transparentBorder1.png - \li \image FastBlur_transparentBorder2.png - \row - \li \b { transparentBorder: false } - \li \b { transparentBorder: true } - \row - \li \l radius: 64 - \li \l radius: 64 - \endtable - */ - property bool transparentBorder: false - - /*! - This property allows the effect output pixels to be cached in order to - improve the rendering performance. - - Every time the source or effect properties are changed, the pixels in - the cache must be updated. Memory consumption is increased, because an - extra buffer of memory is required for storing the effect output. - - It is recommended to disable the cache when the source or the effect - properties are animated. - - By default, the property is set to \c false. - - */ - property bool cached: false - - SourceProxy { - id: sourceProxy - input: rootItem.source - } - - ShaderEffectSource { - id: cacheItem - anchors.fill: shaderItem - visible: rootItem.cached - sourceItem: shaderItem - live: true - hideSource: visible - smooth: rootItem.radius > 0 - } - - /*! \internal */ - property string __internalBlurVertexShader: "qrc:/qt-project.org/imports/QtGraphicalEffects/shaders_ng/fastblur_internal.vert.qsb" - - /*! \internal */ - property string __internalBlurFragmentShader: "qrc:/qt-project.org/imports/QtGraphicalEffects/shaders_ng/fastblur_internal.frag.qsb" - - ShaderEffect { - id: level0 - property variant source: sourceProxy.output - anchors.fill: parent - visible: false - smooth: true - } - - ShaderEffectSource { - id: level1 - width: Math.ceil(shaderItem.width / 32) * 32 - height: Math.ceil(shaderItem.height / 32) * 32 - sourceItem: level0 - hideSource: rootItem.visible - sourceRect: transparentBorder ? Qt.rect(-64, -64, shaderItem.width, shaderItem.height) : Qt.rect(0, 0, 0, 0) - visible: false - smooth: rootItem.radius > 0 - } - - ShaderEffect { - id: effect1 - property variant source: level1 - property real yStep: 1/height - property real xStep: 1/width - anchors.fill: level2 - visible: false - smooth: true - vertexShader: __internalBlurVertexShader - fragmentShader: __internalBlurFragmentShader - } - - ShaderEffectSource { - id: level2 - width: level1.width / 2 - height: level1.height / 2 - sourceItem: effect1 - hideSource: rootItem.visible - visible: false - smooth: true - } - - ShaderEffect { - id: effect2 - property variant source: level2 - property real yStep: 1/height - property real xStep: 1/width - anchors.fill: level3 - visible: false - smooth: true - vertexShader: __internalBlurVertexShader - fragmentShader: __internalBlurFragmentShader - } - - ShaderEffectSource { - id: level3 - width: level2.width / 2 - height: level2.height / 2 - sourceItem: effect2 - hideSource: rootItem.visible - visible: false - smooth: true - } - - ShaderEffect { - id: effect3 - property variant source: level3 - property real yStep: 1/height - property real xStep: 1/width - anchors.fill: level4 - visible: false - smooth: true - vertexShader: __internalBlurVertexShader - fragmentShader: __internalBlurFragmentShader - } - - ShaderEffectSource { - id: level4 - width: level3.width / 2 - height: level3.height / 2 - sourceItem: effect3 - hideSource: rootItem.visible - visible: false - smooth: true - } - - ShaderEffect { - id: effect4 - property variant source: level4 - property real yStep: 1/height - property real xStep: 1/width - anchors.fill: level5 - visible: false - smooth: true - vertexShader: __internalBlurVertexShader - fragmentShader: __internalBlurFragmentShader - } - - ShaderEffectSource { - id: level5 - width: level4.width / 2 - height: level4.height / 2 - sourceItem: effect4 - hideSource: rootItem.visible - visible: false - smooth: true - } - - ShaderEffect { - id: effect5 - property variant source: level5 - property real yStep: 1/height - property real xStep: 1/width - anchors.fill: level6 - visible: false - smooth: true - vertexShader: __internalBlurVertexShader - fragmentShader: __internalBlurFragmentShader - } - - ShaderEffectSource { - id: level6 - width: level5.width / 2 - height: level5.height / 2 - sourceItem: effect5 - hideSource: rootItem.visible - visible: false - smooth: true - } - - Item { - id: dummysource - width: 1 - height: 1 - visible: false - } - - ShaderEffectSource { - id: dummy - width: 1 - height: 1 - sourceItem: dummysource - visible: false - smooth: false - live: false - } - - ShaderEffect { - id: shaderItem - - property variant source1: level1 - property variant source2: level2 - property variant source3: level3 - property variant source4: level4 - property variant source5: level5 - property variant source6: level6 - property real lod: Math.sqrt(rootItem.radius / 64.0) * 1.2 - 0.2 - property real weight1 - property real weight2 - property real weight3 - property real weight4 - property real weight5 - property real weight6 - - x: transparentBorder ? -64 : 0 - y: transparentBorder ? -64 : 0 - width: transparentBorder ? parent.width + 128 : parent.width - height: transparentBorder ? parent.height + 128 : parent.height - - function weight(v) { - if (v <= 0.0) - return 1.0 - if (v >= 0.5) - return 0.0 - - return 1.0 - v * 2.0 - } - - function calculateWeights() { - - var w1 = weight(Math.abs(lod - 0.100)) - var w2 = weight(Math.abs(lod - 0.300)) - var w3 = weight(Math.abs(lod - 0.500)) - var w4 = weight(Math.abs(lod - 0.700)) - var w5 = weight(Math.abs(lod - 0.900)) - var w6 = weight(Math.abs(lod - 1.100)) - - var sum = w1 + w2 + w3 + w4 + w5 + w6; - weight1 = w1 / sum; - weight2 = w2 / sum; - weight3 = w3 / sum; - weight4 = w4 / sum; - weight5 = w5 / sum; - weight6 = w6 / sum; - - upateSources() - } - - function upateSources() { - var sources = new Array(); - var weights = new Array(); - - if (weight1 > 0) { - sources.push(level1) - weights.push(weight1) - } - - if (weight2 > 0) { - sources.push(level2) - weights.push(weight2) - } - - if (weight3 > 0) { - sources.push(level3) - weights.push(weight3) - } - - if (weight4 > 0) { - sources.push(level4) - weights.push(weight4) - } - - if (weight5 > 0) { - sources.push(level5) - weights.push(weight5) - } - - if (weight6 > 0) { - sources.push(level6) - weights.push(weight6) - } - - for (var j = sources.length; j < 6; j++) { - sources.push(dummy) - weights.push(0.0) - } - - source1 = sources[0] - source2 = sources[1] - source3 = sources[2] - source4 = sources[3] - source5 = sources[4] - source6 = sources[5] - - weight1 = weights[0] - weight2 = weights[1] - weight3 = weights[2] - weight4 = weights[3] - weight5 = weights[4] - weight6 = weights[5] - } - - Component.onCompleted: calculateWeights() - - onLodChanged: calculateWeights() - - fragmentShader: "qrc:/qt-project.org/imports/QtGraphicalEffects/shaders_ng/fastblur.frag.qsb" - } -} |