Flip video vertically (GR mode)

[ICO-15]

When playing in GR mode, if you display the video in a window, the top and bottom will be flipped. It didn't happen until 1.3 and has been happening since 1.4.0.
This is normal when displaying in full screen, but only occurs on the window side when displaying both.

[sizuku-slipknot]

Fixed Code\Stage\07.Performance\CActPerfAVI.cs

Line775
this.tx描画用.tDraw2D( CDTXMania.app.Device, this.position2, 5 + this.n本体Y ); to this.tx描画用.tDraw2DUpsideDown( CDTXMania.app.Device, this.position2, 5 + this.n本体Y );

Line777
this.tx描画用.tDraw2D( CDTXMania.app.Device, 30 + this.n本体X, this.position2 ); to this.tx描画用.tDraw2DUpsideDown( CDTXMania.app.Device, 30 + this.n本体X, this.position2 );