SCI: Round left/right edges in bitsShow to even coords

This fixes the vertical black line glitch in the QfG3 start menu (#3293351)
scummvm · May 1, 2011 · 0ff4449 · 0ff4449
1 parent 204a9c2
commit 0ff4449
Showing 1 changed file with 5 additions and 0 deletions.
diff --git a/engines/sci/graphics/paint16.cpp b/engines/sci/graphics/paint16.cpp
@@ -297,6 +297,11 @@ void GfxPaint16::bitsShow(const Common::Rect &rect) {
 		return;
 
 	_ports->offsetRect(workerRect);
+
+	// We adjust the left/right coordinates to even coordinates
+	workerRect.left &= 0xFFFE; // round down
+	workerRect.right = (workerRect.right + 1) & 0xFFFE; // round up
+
 	_screen->copyRectToScreen(workerRect);
 }