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Diffstat (limited to 'src/effects/Blend.qml')
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diff --git a/src/effects/Blend.qml b/src/effects/Blend.qml deleted file mode 100644 index e5f4816..0000000 --- a/src/effects/Blend.qml +++ /dev/null @@ -1,486 +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 - -/*! - \qmltype Blend - \inqmlmodule QtGraphicalEffects - \since QtGraphicalEffects 1.0 - \inherits QtQuick2::Item - \ingroup qtgraphicaleffects-blend - \brief Merges two source items by using a blend mode. - - Blend mode can be selected with the \l{Blend::mode}{mode} property. - - \table - \header - \li source - \li foregroundSource - \li Effect applied - \row - \li \image Original_bug.png - \li \image Original_butterfly.png - \li \image Blend_bug_and_butterfly.png - \endtable - - \note This effect is available when running with OpenGL. - - \section1 Example - - The following example shows how to apply the effect. - \snippet Blend-example.qml example - -*/ - -Item { - id: rootItem - - /*! - This property defines the source item that is going to be the base when - \l{Blend::foregroundSource}{foregroundSource} is blended over it. - - \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 item that is going to be blended over the - \l{Blend::source}{source}. - - \note It is not supported to let the effect include itself, for - instance by setting foregroundSource to the effect's parent. - */ - property variant foregroundSource - - /*! - This property defines the mode which is used when foregroundSource is - blended over source. Values are case insensitive. - - \table - \header - \li mode - \li description - \row - \li normal - \li The pixel component values from foregroundSource are written - over source by using alpha blending. - \row - \li addition - \li The pixel component values from source and foregroundSource are - added together and written. - \row - \li average - \li The pixel component values from source and foregroundSource are - averaged and written. - \row - \li color - \li The lightness value from source is combined with hue and - saturation from foregroundSource and written. - \row - \li colorBurn - \li The darker pixels from source are darkened more, if both source - and foregroundSource pixels are light the result is light. - \row - \li colorDodge - \li The lighter pixels from source are lightened more, if both - source and foregroundSource pixels are dark the result is dark. - \row - \li darken - \li The darker pixel component value from source and - foregroundSource is written. - \row - \li darkerColor - \li The lower luminance pixel rgb-value from source and - foregroundSource is written. - \row - \li difference - \li The absolute pixel component value difference between source and - foregroundSource is written. - \row - \li divide - \li The pixel component values from source is divided by the value - from foregroundSource and written. - \row - \li exclusion - \li The pixel component value difference with reduced contrast - between source and foregroundSource is written. - \row - \li hardLight - \li The pixel component values from source are lightened or darkened - according to foregroundSource values and written. - \row - \li hue - \li The hue value from foregroundSource is combined with saturation - and lightness from source and written. - \row - \li lighten - \li The lightest pixel component value from source and - foregroundSource is written. - \row - \li lighterColor - \li The higher luminance pixel rgb-value from source and - foregroundSource is written. - \row - \li lightness - \li The lightness value from foregroundSource is combined with hue - and saturation from source and written. - \row - \li multiply - \li The pixel component values from source and foregroundSource are - multiplied together and written. - \row - \li negation - \li The inverted absolute pixel component value difference between - source and foregroundSource is written. - \row - \li saturation - \li The saturation value from foregroundSource is combined with hue - and lightness from source and written. - \row - \li screen - \li The pixel values from source and foregroundSource are negated, - then multiplied, negated again, and written. - \row - \li subtract - \li Pixel value from foregroundSource is subracted from source and - written. - \row - \li softLight - \li The pixel component values from source are lightened or darkened - slightly according to foregroundSource values and written. - - \endtable - - \table - \header - \li Example source - \li Example foregroundSource - \row - \li \image Original_bug.png - \li \image Original_butterfly.png - \endtable - - \table - \header - \li Output examples with different mode values - \li - \li - \row - \li \image Blend_mode1.png - \li \image Blend_mode2.png - \li \image Blend_mode3.png - \row - \li \b { mode: normal } - \li \b { mode: addition } - \li \b { mode: average } - \row - \li \image Blend_mode4.png - \li \image Blend_mode5.png - \li \image Blend_mode6.png - \row - \li \b { mode: color } - \li \b { mode: colorBurn } - \li \b { mode: colorDodge } - \row - \li \image Blend_mode7.png - \li \image Blend_mode8.png - \li \image Blend_mode9.png - \row - \li \b { mode: darken } - \li \b { mode: darkerColor } - \li \b { mode: difference } - \row - \li \image Blend_mode10.png - \li \image Blend_mode11.png - \li \image Blend_mode12.png - \row - \li \b { mode: divide } - \li \b { mode: exclusion } - \li \b { mode: hardlight } - \row - \li \image Blend_mode13.png - \li \image Blend_mode14.png - \li \image Blend_mode15.png - \row - \li \b { mode: hue } - \li \b { mode: lighten } - \li \b { mode: lighterColor } - \row - \li \image Blend_mode16.png - \li \image Blend_mode17.png - \li \image Blend_mode18.png - \row - \li \b { mode: lightness } - \li \b { mode: negation } - \li \b { mode: multiply } - \row - \li \image Blend_mode19.png - \li \image Blend_mode20.png - \li \image Blend_mode21.png - \row - \li \b { mode: saturation } - \li \b { mode: screen } - \li \b { mode: subtract } - \row - \li \image Blend_mode22.png - \row - \li \b { mode: softLight } - \endtable - */ - property string mode: "normal" - - /*! - 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 false. - - */ - property bool cached: false - - SourceProxy { - id: backgroundSourceProxy - input: rootItem.source - } - - SourceProxy { - id: foregroundSourceProxy - input: rootItem.foregroundSource - } - - ShaderEffectSource { - id: cacheItem - anchors.fill: parent - visible: rootItem.cached - smooth: true - sourceItem: shaderItem - live: true - hideSource: visible - } - - ShaderEffect { - id: shaderItem - property variant backgroundSource: backgroundSourceProxy.output - property variant foregroundSource: foregroundSourceProxy.output - property string mode: rootItem.mode - anchors.fill: parent - - fragmentShader: fragmentShaderBegin + blendModeNormal + fragmentShaderEnd - - function buildFragmentShader() { - var shader = fragmentShaderBegin - - switch (mode.toLowerCase()) { - case "addition" : shader += blendModeAddition; break; - case "average" : shader += blendModeAverage; break; - case "color" : shader += blendModeColor; break; - case "colorburn" : shader += blendModeColorBurn; break; - case "colordodge" : shader += blendModeColorDodge; break; - case "darken" : shader += blendModeDarken; break; - case "darkercolor" : shader += blendModeDarkerColor; break; - case "difference" : shader += blendModeDifference; break; - case "divide" : shader += blendModeDivide; break; - case "exclusion" : shader += blendModeExclusion; break; - case "hardlight" : shader += blendModeHardLight; break; - case "hue" : shader += blendModeHue; break; - case "lighten" : shader += blendModeLighten; break; - case "lightercolor" : shader += blendModeLighterColor; break; - case "lightness" : shader += blendModeLightness; break; - case "negation" : shader += blendModeNegation; break; - case "normal" : shader += blendModeNormal; break; - case "multiply" : shader += blendModeMultiply; break; - case "saturation" : shader += blendModeSaturation; break; - case "screen" : shader += blendModeScreen; break; - case "subtract" : shader += blendModeSubtract; break; - case "softlight" : shader += blendModeSoftLight; break; - default: shader += "gl_FragColor = vec4(1.0, 0.0, 0.0, 1.0);"; break; - } - - shader += fragmentShaderEnd - fragmentShader = shader - - // Workaraound for a bug just to make sure display gets updated when the mode changes. - backgroundSourceChanged() - } - - Component.onCompleted: { - buildFragmentShader() - } - - onModeChanged: { - buildFragmentShader() - } - - property string blendModeAddition: "result.rgb = min(rgb1 + rgb2, 1.0);" - property string blendModeAverage: "result.rgb = 0.5 * (rgb1 + rgb2);" - property string blendModeColor: "result.rgb = HSLtoRGB(vec3(RGBtoHSL(rgb2).xy, RGBtoL(rgb1)));" - property string blendModeColorBurn: "result.rgb = clamp(1.0 - ((1.0 - rgb1) / max(vec3(1.0 / 256.0), rgb2)), vec3(0.0), vec3(1.0));" - property string blendModeColorDodge: "result.rgb = clamp(rgb1 / max(vec3(1.0 / 256.0), (1.0 - rgb2)), vec3(0.0), vec3(1.0));" - property string blendModeDarken: "result.rgb = min(rgb1, rgb2);" - property string blendModeDarkerColor: "result.rgb = 0.3 * rgb1.r + 0.59 * rgb1.g + 0.11 * rgb1.b > 0.3 * rgb2.r + 0.59 * rgb2.g + 0.11 * rgb2.b ? rgb2 : rgb1;" - property string blendModeDifference: "result.rgb = abs(rgb1 - rgb2);" - property string blendModeDivide: "result.rgb = clamp(rgb1 / rgb2, 0.0, 1.0);" - property string blendModeExclusion: "result.rgb = rgb1 + rgb2 - 2.0 * rgb1 * rgb2;" - property string blendModeHardLight: "result.rgb = vec3(channelBlendHardLight(rgb1.r, rgb2.r), channelBlendHardLight(rgb1.g, rgb2.g), channelBlendHardLight(rgb1.b, rgb2.b));" - property string blendModeHue: "result.rgb = HSLtoRGB(vec3(RGBtoHSL(rgb2).x, RGBtoHSL(rgb1).yz));" - property string blendModeLighten: "result.rgb = max(rgb1, rgb2);" - property string blendModeLighterColor: "result.rgb = 0.3 * rgb1.r + 0.59 * rgb1.g + 0.11 * rgb1.b > 0.3 * rgb2.r + 0.59 * rgb2.g + 0.11 * rgb2.b ? rgb1 : rgb2;" - property string blendModeLightness: "result.rgb = HSLtoRGB(vec3(RGBtoHSL(rgb1).xy, RGBtoL(rgb2)));" - property string blendModeMultiply: "result.rgb = rgb1 * rgb2;" - property string blendModeNegation: "result.rgb = 1.0 - abs(1.0 - rgb1 - rgb2);" - property string blendModeNormal: "result.rgb = rgb2; a = max(color1.a, color2.a);" - property string blendModeSaturation: "lowp vec3 hsl1 = RGBtoHSL(rgb1); result.rgb = HSLtoRGB(vec3(hsl1.x, RGBtoHSL(rgb2).y, hsl1.z));" - property string blendModeScreen: "result.rgb = 1.0 - (vec3(1.0) - rgb1) * (vec3(1.0) - rgb2);" - property string blendModeSubtract: "result.rgb = max(rgb1 - rgb2, vec3(0.0));" - property string blendModeSoftLight: "result.rgb = rgb1 * ((1.0 - rgb1) * rgb2 + (1.0 - (1.0 - rgb1) * (1.0 - rgb2)));" - - property string fragmentCoreShaderWorkaround: (GraphicsInfo.profile === GraphicsInfo.OpenGLCoreProfile ? "#version 150 core - #define varying in - #define texture2D texture - out vec4 fragColor; - #define gl_FragColor fragColor - " : "") - - property string fragmentShaderBegin: fragmentCoreShaderWorkaround + " - varying mediump vec2 qt_TexCoord0; - uniform highp float qt_Opacity; - uniform lowp sampler2D backgroundSource; - uniform lowp sampler2D foregroundSource; - - highp float RGBtoL(highp vec3 color) { - highp float cmin = min(color.r, min(color.g, color.b)); - highp float cmax = max(color.r, max(color.g, color.b)); - highp float l = (cmin + cmax) / 2.0; - return l; - } - - highp vec3 RGBtoHSL(highp vec3 color) { - highp float cmin = min(color.r, min(color.g, color.b)); - highp float cmax = max(color.r, max(color.g, color.b)); - highp float h = 0.0; - highp float s = 0.0; - highp float l = (cmin + cmax) / 2.0; - highp float diff = cmax - cmin; - - if (diff > 1.0 / 256.0) { - if (l < 0.5) - s = diff / (cmin + cmax); - else - s = diff / (2.0 - (cmin + cmax)); - - if (color.r == cmax) - h = (color.g - color.b) / diff; - else if (color.g == cmax) - h = 2.0 + (color.b - color.r) / diff; - else - h = 4.0 + (color.r - color.g) / diff; - - h /= 6.0; - } - return vec3(h, s, l); - } - - highp float hueToIntensity(highp float v1, highp float v2, highp float h) { - h = fract(h); - if (h < 1.0 / 6.0) - return v1 + (v2 - v1) * 6.0 * h; - else if (h < 1.0 / 2.0) - return v2; - else if (h < 2.0 / 3.0) - return v1 + (v2 - v1) * 6.0 * (2.0 / 3.0 - h); - - return v1; - } - - highp vec3 HSLtoRGB(highp vec3 color) { - highp float h = color.x; - highp float l = color.z; - highp float s = color.y; - - if (s < 1.0 / 256.0) - return vec3(l, l, l); - - highp float v1; - highp float v2; - if (l < 0.5) - v2 = l * (1.0 + s); - else - v2 = (l + s) - (s * l); - - v1 = 2.0 * l - v2; - - highp float d = 1.0 / 3.0; - highp float r = hueToIntensity(v1, v2, h + d); - highp float g = hueToIntensity(v1, v2, h); - highp float b = hueToIntensity(v1, v2, h - d); - return vec3(r, g, b); - } - - lowp float channelBlendHardLight(lowp float c1, lowp float c2) { - return c2 > 0.5 ? (1.0 - (1.0 - 2.0 * (c2 - 0.5)) * (1.0 - c1)) : (2.0 * c1 * c2); - } - - void main() { - lowp vec4 result = vec4(0.0); - lowp vec4 color1 = texture2D(backgroundSource, qt_TexCoord0); - lowp vec4 color2 = texture2D(foregroundSource, qt_TexCoord0); - lowp vec3 rgb1 = color1.rgb / max(1.0/256.0, color1.a); - lowp vec3 rgb2 = color2.rgb / max(1.0/256.0, color2.a); - highp float a = max(color1.a, color1.a * color2.a); - " - - property string fragmentShaderEnd: " - gl_FragColor.rgb = mix(rgb1, result.rgb, color2.a); - gl_FragColor.rbg *= a; - gl_FragColor.a = a; - gl_FragColor *= qt_Opacity; - } - " - } -} |