I am trying to render  an item in a container. I have found that Minecraft.getMinecraft().fontRenderedObj.drawString() works but I do not know how to do the correct x and y.
Someone had made this code, the position is right but only works in chests. 

int guiLeft = (guiContainer.width - 176) / 2;
int inventoryRows = inventory.getSizeInventory() / 9;
int ySize = 222 - 108 + inventoryRows * 18;
int guiTop = (guiContainer.height - ySize) / 2;

int slotX = (int) ((guiLeft + inventorySlot.xDisplayPosition) / scaleFactor);
int slotY = (int) ((guiTop + inventorySlot.yDisplayPosition) / scaleFactor);

Edited July 26, 20205 yr by Befell
typo

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