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Diffstat (limited to 'examples/wayland/qml-compositor/ContrastEffect.qml')
-rw-r--r-- | examples/wayland/qml-compositor/ContrastEffect.qml | 90 |
1 files changed, 90 insertions, 0 deletions
diff --git a/examples/wayland/qml-compositor/ContrastEffect.qml b/examples/wayland/qml-compositor/ContrastEffect.qml new file mode 100644 index 00000000..c284b290 --- /dev/null +++ b/examples/wayland/qml-compositor/ContrastEffect.qml @@ -0,0 +1,90 @@ +/**************************************************************************** +** +** Copyright (C) 2012 Digia Plc and/or its subsidiary(-ies). +** Contact: http://www.qt-project.org/legal +** +** This file is part of the examples of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:BSD$ +** 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 Digia Plc and its Subsidiary(-ies) 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 2.0 + +ShaderEffect { + property variant source: null; + property color color: "#ffffff" + property real blend; + + onSourceChanged: { + if (source != null) { + source.setPaintEnabled(false); + } + } + + property string vShaderInvertedY: " + uniform highp mat4 qt_Matrix; + attribute highp vec4 qt_Vertex; + attribute highp vec2 qt_MultiTexCoord0; + varying highp vec2 qt_TexCoord0; + void main() { + qt_TexCoord0 = qt_MultiTexCoord0; + gl_Position = qt_Matrix * qt_Vertex; + } + " + property string vShader: " + uniform highp mat4 qt_Matrix; + attribute highp vec4 qt_Vertex; + attribute highp vec2 qt_MultiTexCoord0; + varying highp vec2 qt_TexCoord0; + void main() { + qt_TexCoord0 = vec2(0, 1) + qt_MultiTexCoord0 * vec2(1, -1); + gl_Position = qt_Matrix * qt_Vertex; + } + " + + vertexShader: source && source.isYInverted ? vShaderInvertedY : vShader + + fragmentShader: " + uniform lowp sampler2D source; + uniform highp float qt_Opacity; + uniform highp vec4 color; + uniform highp float blend; + varying highp vec2 qt_TexCoord0; + void main() { + highp vec4 sourceColor = texture2D(source, qt_TexCoord0); + highp vec3 delta = sourceColor.rgb - vec3(0.5); + highp vec3 lowerContrast = vec3(0.5) + 0.4 * delta; + gl_FragColor = qt_Opacity * mix(sourceColor, color * sourceColor.a * dot(lowerContrast, vec3(11, 16, 5) * (1. / 32.)), blend); + } + " +} |