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Diffstat (limited to 'basicsuite/qt5-launchpresentation/NormalMapGenerator.qml')
-rw-r--r-- | basicsuite/qt5-launchpresentation/NormalMapGenerator.qml | 92 |
1 files changed, 92 insertions, 0 deletions
diff --git a/basicsuite/qt5-launchpresentation/NormalMapGenerator.qml b/basicsuite/qt5-launchpresentation/NormalMapGenerator.qml new file mode 100644 index 0000000..c6f55c7 --- /dev/null +++ b/basicsuite/qt5-launchpresentation/NormalMapGenerator.qml @@ -0,0 +1,92 @@ +/**************************************************************************** +** +** Copyright (C) 2012 Digia Plc and/or its subsidiary(-ies). +** Contact: http://www.qt-project.org/legal +** +** This file is part of the Qt 5 launch demo. +** +** $QT_BEGIN_LICENSE:BSD$ +** 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 +import QtGraphicalEffects 1.0 + +ShaderEffect { + id: effectRoot; + + property alias source: blurShader.source; + + GaussianBlur + { + id: blurShader; + width: source != undefined ? source.width : 0 + height: source != undefined ? source.height : 0 + samples: 8 + radius: 8 + + layer.enabled: true; + layer.smooth: true; + + visible: false; + } + + width: 256 + height: 128 + + property variant tex: blurShader; + property size pixelSize: Qt.size(1 / blurShader.width, 1 / blurShader.height); + + fragmentShader: " + #ifdef GL_ES + precision lowp float; + #endif + + uniform lowp float qt_Opacity; + uniform lowp sampler2D tex; + uniform highp vec2 pixelSize; + varying highp vec2 qt_TexCoord0; + void main() { + + lowp vec2 xps = vec2(pixelSize.x, 0.0); + vec3 vx = vec3(1, 0, texture2D(tex, qt_TexCoord0 + xps).x - texture2D(tex, qt_TexCoord0 - xps).x); + + lowp vec2 yps = vec2(0.0, pixelSize.y); + vec3 vy = vec3(0, 1, texture2D(tex, qt_TexCoord0 + yps).x - texture2D(tex, qt_TexCoord0 - yps).x); + + vec3 n = normalize(cross(vx, vy)) * 0.5 + 0.5; + + gl_FragColor = vec4(n, 1); + } + " + +} |