LTDC layer 1 offset

[RN_it]

Hello,

I used the below code from ST bsp

Board : STM32F746-DISCO

 BSP_LCD_Init();

 BSP_LCD_SetLayerWindow(0,50,50,200,200);

 BSP_LCD_LayerRgb565Init(LTDC_LAYER_1,(uint32_t)fb);

I expected layer 1 should be off by 50 on both axes . but it started from x = 0 , y = 0

Can you please help me understanding why this is happening ?

Thanks