GRAPHICS: (really) fix screen shake x/y offsets

I confused window w/h with actual drawing w/h. And obviously forgot to test stretch modes like "Center". Now these modes also seem to work pixel exact...

1 files changed, 2 insertions, 2 deletions

diff --git a/backends/graphics/windowed.h b/backends/graphics/windowed.h
index bea4522d5a..99115275de 100644
--- a/backends/graphics/windowed.h
+++ b/backends/graphics/windowed.h
@@ -406,8 +406,8 @@ private:
 			}
 		}
 		
-		drawRect.left = ((_windowWidth - width) / 2) + _gameScreenShakeXOffset * _windowWidth / getWidth();
-		drawRect.top = ((_windowHeight - height) / 2) + _gameScreenShakeYOffset * _windowHeight / getHeight();
+		drawRect.left = ((_windowWidth - width) / 2) + _gameScreenShakeXOffset * width / getWidth();
+		drawRect.top = ((_windowHeight - height) / 2) + _gameScreenShakeYOffset * height / getHeight();
 		drawRect.setWidth(width);
 		drawRect.setHeight(height);
 	}