Fix oscilloscope display under SDL2

2020-06-09 15:09:21 -07:00
parent 044aa342ae
commit 002e1994a1
1 changed files with 2 additions and 0 deletions
@@ -44,6 +44,8 @@ InitOscilloscope (FRAME scopeBg)

 		// mid-image pixel defines the color of scope lines
 		scopeColor = GetFramePixel (scope_frame, midPt);
+		// insist that scope lines be purely opaque
+		scopeColor.a = 0xff;
 		
 		scopeWork = CaptureDrawable (CreateDrawable (
 				WANT_PIXMAP | MAPPED_TO_DISPLAY,