1 files changed, 30 insertions, 0 deletions
diff --git a/src/effects/shaders/radialgradient.vert b/src/effects/shaders/radialgradient.vert
new file mode 100644
index 0000000..ce69586
--- /dev/null
+++ b/src/effects/shaders/radialgradient.vert
@@ -0,0 +1,30 @@
+attribute highp vec4 qt_Vertex;
+attribute highp vec2 qt_MultiTexCoord0;
+uniform highp mat4 qt_Matrix;
+uniform highp vec2 matrixData;
+uniform highp float horizontalRatio;
+uniform highp float verticalRatio;
+uniform highp vec2 center;
+varying highp vec2 qt_TexCoord0;
+varying highp vec2 qt_TexCoord1;
+varying highp vec2 centerPoint;
+
+void main() {
+    highp vec2 ratio = vec2(horizontalRatio, verticalRatio);
+
+    // Rotation matrix
+    highp mat2 rot = mat2(matrixData.y, -matrixData.x,
+                          matrixData.x,  matrixData.y);
+
+    qt_TexCoord0 = qt_MultiTexCoord0;
+
+    qt_TexCoord1 = qt_MultiTexCoord0;
+    qt_TexCoord1 -= center;
+    qt_TexCoord1 *= rot;
+    qt_TexCoord1 += center;
+    qt_TexCoord1 *= ratio;
+
+    centerPoint = center * ratio;
+
+    gl_Position = qt_Matrix * qt_Vertex;
+}