aboutsummaryrefslogtreecommitdiffstats
path: root/examples/particles/customparticle/fragmentshader.qml
diff options
context:
space:
mode:
Diffstat (limited to 'examples/particles/customparticle/fragmentshader.qml')
-rw-r--r--examples/particles/customparticle/fragmentshader.qml115
1 files changed, 115 insertions, 0 deletions
diff --git a/examples/particles/customparticle/fragmentshader.qml b/examples/particles/customparticle/fragmentshader.qml
new file mode 100644
index 0000000000..34acb1bd7c
--- /dev/null
+++ b/examples/particles/customparticle/fragmentshader.qml
@@ -0,0 +1,115 @@
+/****************************************************************************
+**
+** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: http://www.qt-project.org/
+**
+** 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 Nokia Corporation 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 QtQuick.Particles 2.0
+
+ParticleSystem {
+ id: root
+ width: 1024
+ height: 768
+ Rectangle {
+ z: -1
+ anchors.fill: parent
+ color: "black"
+ Text {
+ anchors.bottom: parent.bottom
+ anchors.horizontalCenter: parent.horizontalCenter
+ font.pixelSize: 36
+ color: "white"
+ text: "It's all in the fragment shader."
+ }
+ }
+
+ Emitter {
+ emitRate: 400
+ lifeSpan: 8000
+ size: 24
+ sizeVariation: 16
+ speed: PointDirection {x: root.width/10; y: root.height/10;}
+ //acceleration: AngledDirection {angle:225; magnitude: root.width/36; angleVariation: 45; magnitudeVariation: 80}
+ acceleration: PointDirection {x: -root.width/40; y: -root.height/40; xVariation: -root.width/20; yVariation: -root.width/20}
+ }
+
+ CustomParticle {
+ vertexShader:"
+ uniform lowp float qt_Opacity;
+ varying lowp float fFade;
+ varying highp vec2 fPos;
+
+ void main() {
+ qt_TexCoord0 = qt_ParticleTex;
+ highp float size = qt_ParticleData.z;
+ highp float endSize = qt_ParticleData.w;
+
+ highp float t = (qt_Timestamp - qt_ParticleData.x) / qt_ParticleData.y;
+
+ highp float currentSize = mix(size, endSize, t * t);
+
+ if (t < 0. || t > 1.)
+ currentSize = 0.;
+
+ highp vec2 pos = qt_ParticlePos
+ - currentSize / 2. + currentSize * qt_ParticleTex // adjust size
+ + qt_ParticleVec.xy * t * qt_ParticleData.y // apply speed vector..
+ + 0.5 * qt_ParticleVec.zw * pow(t * qt_ParticleData.y, 2.);
+
+ gl_Position = qt_Matrix * vec4(pos.x, pos.y, 0, 1);
+
+ highp float fadeIn = min(t * 20., 1.);
+ highp float fadeOut = 1. - max(0., min((t - 0.75) * 4., 1.));
+
+ fFade = fadeIn * fadeOut * qt_Opacity;
+ fPos = vec2(pos.x/1024., pos.y/768.);
+ }
+ "
+ fragmentShader: "
+ varying highp vec2 fPos;
+ varying lowp float fFade;
+ varying highp vec2 qt_TexCoord0;
+ void main() {//*2 because this generates dark colors mostly
+ highp vec2 circlePos = qt_TexCoord0*2.0 - vec2(1.0,1.0);
+ highp float dist = length(circlePos);
+ highp float circleFactor = max(min(1.0 - dist, 1.0), 0.0);
+ gl_FragColor = vec4(fPos.x*2.0 - fPos.y, fPos.y*2.0 - fPos.x, fPos.x*fPos.y*2.0, 0.0) * circleFactor * fFade;
+ }"
+
+ }
+}