Faster blitting by using Source composition

1 files changed, 1 insertions, 0 deletions

diff --git a/raycasting/raycasting.cpp b/raycasting/raycasting.cpp
index 21897c2..18cf256 100644
--- a/raycasting/raycasting.cpp
+++ b/raycasting/raycasting.cpp
@@ -236,6 +236,7 @@ protected:
 
     void paintEvent(QPaintEvent *event) {
         QPainter p(this);
+        p.setCompositionMode(QPainter::CompositionMode_Source);
         p.drawImage(event->rect(), buffer, event->rect());
     }