Fix hue rotation in QPainterVideoSurface.

1 files changed, 9 insertions, 9 deletions

diff --git a/src/multimedia/base/qpaintervideosurface.cpp b/src/multimedia/base/qpaintervideosurface.cpp
index 533ddee..f097db8 100644
--- a/src/multimedia/base/qpaintervideosurface.cpp
+++ b/src/multimedia/base/qpaintervideosurface.cpp
@@ -368,17 +368,17 @@ void QVideoSurfaceGLPainter::updateColors(int brightness, int contrast, int hue,
     const qreal cosH = qCos(M_PI * h);
     const qreal sinH = qSin(M_PI * h);
 
-    const qreal h11 = -0.4728 * cosH + 0.7954 * sinH + 1.4728;
-    const qreal h21 = -0.9253 * cosH - 0.0118 * sinH + 0.9523;
-    const qreal h31 =  0.4525 * cosH + 0.8072 * sinH - 0.4524;
+    const qreal h11 =  0.787 * cosH - 0.213 * sinH + 0.213;
+    const qreal h21 = -0.213 * cosH + 0.143 * sinH + 0.213;
+    const qreal h31 = -0.213 * cosH - 0.787 * sinH + 0.213;
 
-    const qreal h12 =  1.4728 * cosH - 1.3728 * sinH - 1.4728;
-    const qreal h22 =  1.9253 * cosH + 0.5891 * sinH - 0.9253;
-    const qreal h32 = -0.4525 * cosH - 1.9619 * sinH + 0.4525;
+    const qreal h12 = -0.715 * cosH - 0.715 * sinH + 0.715;
+    const qreal h22 =  0.285 * cosH + 0.140 * sinH + 0.715;
+    const qreal h32 = -0.715 * cosH + 0.715 * sinH + 0.715;
 
-    const qreal h13 =  1.4728 * cosH - 0.2181 * sinH - 1.4728;
-    const qreal h23 =  0.9253 * cosH + 1.1665 * sinH - 0.9253;
-    const qreal h33 =  0.5475 * cosH - 1.3846 * sinH + 0.4525;
+    const qreal h13 = -0.072 * cosH + 0.928 * sinH + 0.072;
+    const qreal h23 = -0.072 * cosH - 0.283 * sinH + 0.072;
+    const qreal h33 =  0.928 * cosH + 0.072 * sinH + 0.072;
 
     const qreal sr = (1.0 - s) * 0.3086;
     const qreal sg = (1.0 - s) * 0.6094;