Changed screen width calculations to subtract 1 if the result is odd.

src/ScreenDimensions.cpp

@@ -35,7 +35,11 @@ float ScreenDimensions::GetScreenWidth()
 	if( fAspect > THEME_NATIVE_ASPECT )
 		fScale = fAspect / THEME_NATIVE_ASPECT;
 	ASSERT( fScale >= 1 );
-	return (float) ceilf(THEME_SCREEN_WIDTH * fScale);
+	// ceilf causes the width to come out odd when it shouldn't.
+	// 576 * 1.7778 = 1024.0128, which is rounded to 1025. -Kyz
+	int width= (int)ceilf(THEME_SCREEN_WIDTH * fScale);
+	width-= width % 2;
+	return (float)width;
 }
 
 float ScreenDimensions::GetScreenHeight()

src/StepMania.cpp

@@ -88,6 +88,9 @@ void StepMania::GetPreferredVideoModeParams( VideoModeParams &paramsOut )
 		//float fRatio = PREFSMAN->m_iDisplayHeight;
 		//iWidth = PREFSMAN->m_iDisplayHeight * fRatio;
 		iWidth = static_cast<int>(ceilf(PREFSMAN->m_iDisplayHeight * PREFSMAN->m_fDisplayAspectRatio));
+		// ceilf causes the width to come out odd when it shouldn't.
+		// 576 * 1.7778 = 1024.0128, which is rounded to 1025. -Kyz
+		iWidth-= iWidth % 2;
 	}
 
 	paramsOut = VideoModeParams(