1 files changed, 84 insertions, 0 deletions
diff --git a/examples/declarative/particles/custom/shader.qml b/examples/declarative/particles/custom/shader.qml
new file mode 100644
index 0000000000..d83e7864c4
--- /dev/null
+++ b/examples/declarative/particles/custom/shader.qml
@@ -0,0 +1,84 @@
+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{
+        //TODO: Someway that you don't have to rewrite the basics for a simple addition
+        vertexShader:"
+            attribute highp vec2 vPos;
+            attribute highp vec2 vTex;
+            attribute highp vec4 vData; //  x = time,  y = lifeSpan, z = size,  w = endSize
+            attribute highp vec4 vVec; // x,y = constant speed,  z,w = acceleration
+            attribute highp float r;
+
+            uniform highp mat4 qt_ModelViewProjectionMatrix;                              
+            uniform highp float timestamp;
+            uniform lowp float qt_Opacity;
+
+            varying highp vec2 fTex;                                
+            varying lowp float fFade;
+            varying highp vec2 fPos;
+
+            void main() {                                           
+                fTex = vTex;                                        
+                highp float size = vData.z;
+                highp float endSize = vData.w;
+
+                highp float t = (timestamp - vData.x) / vData.y;
+
+                highp float currentSize = mix(size, endSize, t * t);
+
+                if (t < 0. || t > 1.)
+                currentSize = 0.;
+
+                highp vec2 pos = vPos
+                - currentSize / 2. + currentSize * vTex          // adjust size
+                + vVec.xy * t * vData.y         // apply speed vector..
+                + 0.5 * vVec.zw * pow(t * vData.y, 2.);
+
+                gl_Position = qt_ModelViewProjectionMatrix * 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 fTex;
+            void main() {//*2 because this generates dark colors mostly
+                highp vec2 circlePos = fTex*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;
+            }"
+
+    }
+}