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Diffstat (limited to 'src/effects/private/GaussianDirectionalBlur.qml')
| -rw-r--r-- | src/effects/private/GaussianDirectionalBlur.qml | 289 |
1 files changed, 0 insertions, 289 deletions
diff --git a/src/effects/private/GaussianDirectionalBlur.qml b/src/effects/private/GaussianDirectionalBlur.qml deleted file mode 100644 index 4d52b2e..0000000 --- a/src/effects/private/GaussianDirectionalBlur.qml +++ /dev/null @@ -1,289 +0,0 @@ -/**************************************************************************** -** -** Copyright (C) 2017 The Qt Company Ltd. -** Contact: https://www.qt.io/licensing/ -** -** This file is part of the Qt Graphical Effects module. -** -** $QT_BEGIN_LICENSE:LGPL$ -** 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. -** -** GNU Lesser General Public License Usage -** Alternatively, this file may be used under the terms of the GNU Lesser -** General Public License version 3 as published by the Free Software -** Foundation and appearing in the file LICENSE.LGPL3 included in the -** packaging of this file. Please review the following information to -** ensure the GNU Lesser General Public License version 3 requirements -** will be met: https://www.gnu.org/licenses/lgpl-3.0.html. -** -** GNU General Public License Usage -** Alternatively, this file may be used under the terms of the GNU -** General Public License version 2.0 or (at your option) the GNU General -** Public license version 3 or any later version approved by the KDE Free -** Qt Foundation. The licenses are as published by the Free Software -** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3 -** included in the packaging of this file. Please review the following -** information to ensure the GNU General Public License requirements will -** be met: https://www.gnu.org/licenses/gpl-2.0.html and -** https://www.gnu.org/licenses/gpl-3.0.html. -** -** $QT_END_LICENSE$ -** -****************************************************************************/ - -import QtQuick 2.12 -import QtGraphicalEffects.private 1.12 - -Item { - id: rootItem - property variant source - property real deviation: (radius + 1) / 3.3333 - property real radius: 0.0 - property int maximumRadius: 0 - property real horizontalStep: 0.0 - property real verticalStep: 0.0 - property bool transparentBorder: false - property bool cached: false - - property bool enableColor: false - property color color: "white" - property real spread: 0.0 - - property bool enableMask: false - property variant maskSource - - SourceProxy { - id: sourceProxy - input: rootItem.source - } - - SourceProxy { - id: maskSourceProxy - input: rootItem.maskSource - } - - ShaderEffectSource { - id: cacheItem - anchors.fill: rootItem - visible: rootItem.cached - smooth: true - sourceItem: shaderItem - live: true - hideSource: visible - } - - ShaderEffect { - id: shaderItem - property variant source: sourceProxy.output - property real deviation: Math.max(0.1, rootItem.deviation) - property real radius: rootItem.radius - property int maxRadius: rootItem.maximumRadius - property bool transparentBorder: rootItem.transparentBorder - property real gaussianSum: 0.0 - property real startIndex: 0.0 - property real deltaFactor: (2 * radius - 1) / (maxRadius * 2 - 1) - property real expandX: transparentBorder && rootItem.horizontalStep > 0 ? maxRadius / width : 0.0 - property real expandY: transparentBorder && rootItem.verticalStep > 0 ? maxRadius / height : 0.0 - property variant gwts: [] - property variant delta: Qt.vector3d(rootItem.horizontalStep * deltaFactor, rootItem.verticalStep * deltaFactor, startIndex); - property variant factor_0_2: Qt.vector3d(gwts[0], gwts[1], gwts[2]); - property variant factor_3_5: Qt.vector3d(gwts[3], gwts[4], gwts[5]); - property variant factor_6_8: Qt.vector3d(gwts[6], gwts[7], gwts[8]); - property variant factor_9_11: Qt.vector3d(gwts[9], gwts[10], gwts[11]); - property variant factor_12_14: Qt.vector3d(gwts[12], gwts[13], gwts[14]); - property variant factor_15_17: Qt.vector3d(gwts[15], gwts[16], gwts[17]); - property variant factor_18_20: Qt.vector3d(gwts[18], gwts[19], gwts[20]); - property variant factor_21_23: Qt.vector3d(gwts[21], gwts[22], gwts[23]); - property variant factor_24_26: Qt.vector3d(gwts[24], gwts[25], gwts[26]); - property variant factor_27_29: Qt.vector3d(gwts[27], gwts[28], gwts[29]); - property variant factor_30_31: Qt.point(gwts[30], gwts[31]); - - property color color: rootItem.color - property real spread: 1.0 - (rootItem.spread * 0.98) - property variant maskSource: maskSourceProxy.output - - anchors.fill: rootItem - - function gausFunc(x){ - //Gaussian function = h(x):=(1/sqrt(2*3.14159*(D^2))) * %e^(-(x^2)/(2*(D^2))); - return (1.0 / Math.sqrt(2 * Math.PI * (Math.pow(shaderItem.deviation, 2)))) * Math.pow(Math.E, -((Math.pow(x, 2)) / (2 * (Math.pow(shaderItem.deviation, 2))))); - } - - function updateGaussianWeights() { - gaussianSum = 0.0; - startIndex = -maxRadius + 0.5 - - var n = new Array(32); - for (var j = 0; j < 32; j++) - n[j] = 0; - - var max = maxRadius * 2 - var delta = (2 * radius - 1) / (max - 1); - for (var i = 0; i < max; i++) { - n[i] = gausFunc(-radius + 0.5 + i * delta); - gaussianSum += n[i]; - } - - gwts = n; - } - - function buildFragmentShader() { - - var shaderSteps = [ - "gl_FragColor += texture2D(source, texCoord) * factor_0_2.x; texCoord += shift;", - "gl_FragColor += texture2D(source, texCoord) * factor_0_2.y; texCoord += shift;", - "gl_FragColor += texture2D(source, texCoord) * factor_0_2.z; texCoord += shift;", - - "gl_FragColor += texture2D(source, texCoord) * factor_3_5.x; texCoord += shift;", - "gl_FragColor += texture2D(source, texCoord) * factor_3_5.y; texCoord += shift;", - "gl_FragColor += texture2D(source, texCoord) * factor_3_5.z; texCoord += shift;", - - "gl_FragColor += texture2D(source, texCoord) * factor_6_8.x; texCoord += shift;", - "gl_FragColor += texture2D(source, texCoord) * factor_6_8.y; texCoord += shift;", - "gl_FragColor += texture2D(source, texCoord) * factor_6_8.z; texCoord += shift;", - - "gl_FragColor += texture2D(source, texCoord) * factor_9_11.x; texCoord += shift;", - "gl_FragColor += texture2D(source, texCoord) * factor_9_11.y; texCoord += shift;", - "gl_FragColor += texture2D(source, texCoord) * factor_9_11.z; texCoord += shift;", - - "gl_FragColor += texture2D(source, texCoord) * factor_12_14.x; texCoord += shift;", - "gl_FragColor += texture2D(source, texCoord) * factor_12_14.y; texCoord += shift;", - "gl_FragColor += texture2D(source, texCoord) * factor_12_14.z; texCoord += shift;", - - "gl_FragColor += texture2D(source, texCoord) * factor_15_17.x; texCoord += shift;", - "gl_FragColor += texture2D(source, texCoord) * factor_15_17.y; texCoord += shift;", - "gl_FragColor += texture2D(source, texCoord) * factor_15_17.z; texCoord += shift;", - - "gl_FragColor += texture2D(source, texCoord) * factor_18_20.x; texCoord += shift;", - "gl_FragColor += texture2D(source, texCoord) * factor_18_20.y; texCoord += shift;", - "gl_FragColor += texture2D(source, texCoord) * factor_18_20.z; texCoord += shift;", - - "gl_FragColor += texture2D(source, texCoord) * factor_21_23.x; texCoord += shift;", - "gl_FragColor += texture2D(source, texCoord) * factor_21_23.y; texCoord += shift;", - "gl_FragColor += texture2D(source, texCoord) * factor_21_23.z; texCoord += shift;", - - "gl_FragColor += texture2D(source, texCoord) * factor_24_26.x; texCoord += shift;", - "gl_FragColor += texture2D(source, texCoord) * factor_24_26.y; texCoord += shift;", - "gl_FragColor += texture2D(source, texCoord) * factor_24_26.z; texCoord += shift;", - - "gl_FragColor += texture2D(source, texCoord) * factor_27_29.x; texCoord += shift;", - "gl_FragColor += texture2D(source, texCoord) * factor_27_29.y; texCoord += shift;", - "gl_FragColor += texture2D(source, texCoord) * factor_27_29.z; texCoord += shift;", - - "gl_FragColor += texture2D(source, texCoord) * factor_30_31.x; texCoord += shift;", - "gl_FragColor += texture2D(source, texCoord) * factor_30_31.y; texCoord += shift;" - ] - - var shader = "" - if (GraphicsInfo.profile == GraphicsInfo.OpenGLCoreProfile) - shader += "#version 150 core\n#define varying in\n#define gl_FragColor fragColor\n#define texture2D texture\nout vec4 fragColor;\n" - shader += fragmentShaderBegin - var samples = maxRadius * 2 - if (samples > 32) { - console.log("DirectionalGaussianBlur.qml WARNING: Maximum of blur radius (16) exceeded!") - samples = 32 - } - - for (var i = 0; i < samples; i++) { - shader += shaderSteps[i] - } - - shader += fragmentShaderEnd - - var colorizeSteps = "" - var colorizeUniforms = "" - - var maskSteps = "" - var maskUniforms = "" - - if (enableColor) { - colorizeSteps += "gl_FragColor = mix(vec4(0), color, clamp((gl_FragColor.a - 0.0) / (spread - 0.0), 0.0, 1.0));\n" - colorizeUniforms += "uniform highp vec4 color;\n" - colorizeUniforms += "uniform highp float spread;\n" - } - - if (enableMask) { - maskSteps += "shift *= texture2D(maskSource, qt_TexCoord0).a;\n" - maskUniforms += "uniform sampler2D maskSource;\n" - } - - shader = shader.replace("PLACEHOLDER_COLORIZE_STEPS", colorizeSteps) - shader = shader.replace("PLACEHOLDER_COLORIZE_UNIFORMS", colorizeUniforms) - shader = shader.replace("PLACEHOLDER_MASK_STEPS", maskSteps) - shader = shader.replace("PLACEHOLDER_MASK_UNIFORMS", maskUniforms) - - fragmentShader = shader - } - - onDeviationChanged: updateGaussianWeights() - - onRadiusChanged: updateGaussianWeights() - - onTransparentBorderChanged: { - buildFragmentShader() - updateGaussianWeights() - } - - onMaxRadiusChanged: { - buildFragmentShader() - updateGaussianWeights() - } - - Component.onCompleted: { - buildFragmentShader() - updateGaussianWeights() - } - - property string fragmentShaderBegin: " - varying mediump vec2 qt_TexCoord0; - uniform highp float qt_Opacity; - uniform lowp sampler2D source; - uniform highp vec3 delta; - uniform highp vec3 factor_0_2; - uniform highp vec3 factor_3_5; - uniform highp vec3 factor_6_8; - uniform highp vec3 factor_9_11; - uniform highp vec3 factor_12_14; - uniform highp vec3 factor_15_17; - uniform highp vec3 factor_18_20; - uniform highp vec3 factor_21_23; - uniform highp vec3 factor_24_26; - uniform highp vec3 factor_27_29; - uniform highp vec3 factor_30_31; - uniform highp float gaussianSum; - uniform highp float expandX; - uniform highp float expandY; - PLACEHOLDER_MASK_UNIFORMS - PLACEHOLDER_COLORIZE_UNIFORMS - - void main() { - highp vec2 shift = vec2(delta.x, delta.y); - - PLACEHOLDER_MASK_STEPS - - highp float index = delta.z; - mediump vec2 texCoord = qt_TexCoord0; - texCoord.s = (texCoord.s - expandX) / (1.0 - 2.0 * expandX); - texCoord.t = (texCoord.t - expandY) / (1.0 - 2.0 * expandY); - texCoord += (shift * index); - - gl_FragColor = vec4(0.0, 0.0, 0.0, 0.0); - " - - property string fragmentShaderEnd: " - - gl_FragColor /= gaussianSum; - - PLACEHOLDER_COLORIZE_STEPS - - gl_FragColor *= qt_Opacity; - } - " - } -} |