I'm trying to draw my GUI: I have the following code:

 

    @Override
    public void drawScreen(int xSize_lo, int ySize_lo, float par3) {
        super.drawScreen(xSize_lo, ySize_lo, par3);
        GL11.glColor4f(1.0F, 1.0F, 1.0F, 1.0F);
        this.mc.getTextureManager().bindTexture(iconLocation);
        int k = (this.width - this.xSize) / 2;
        int l = (this.height - this.ySize) / 2;

        this.drawTexturedModalRect(k, l, 0, 0, this.xSize, this.ySize);

        this.drawVerticalLine(k + 15, l, l + 100, 0x334455);

        int y = 0;
        HashMap<Coordinate,BlockInfo> connectedBlocks = monitorItem.getConnectedBlocks();
        for (Map.Entry<Coordinate,BlockInfo> me : connectedBlocks.entrySet()) {
            Block block = me.getValue().getBlock();
            Coordinate coordinate = me.getKey();
            ItemStack s = new ItemStack(block, 1, 0);
//            String lname = block.getLocalizedName();
//            System.out.println("I18n = " + I18n.format(lname));
//            System.out.println("Stat = " + StatCollector.translateToLocal(lname));

            mc.fontRenderer.drawString(s.getDisplayName(), k + 5, l + 5 + y, 1677215);
            mc.fontRenderer.drawString(coordinate.toString(), k+160, l+5+y, 1677215);

            y += mc.fontRenderer.FONT_HEIGHT + 2;
        }

        this.drawGradientRect(k + xSize-20, l + 5, k + xSize-5, l + ySize - 5, 0xFF0000, 0x00FF00);
        this.drawGradientRect(k + 5, l + 5, k + 10, l + ySize - 5, 0xFF0000, 0x00FF00);

        mc.fontRenderer.drawString("###", k + 15, l, 0x334455);
        this.drawVerticalLine(k+15, l, l + 50, 0x334455);
    }

 

I can see the background texture. I can see all the text that has been rendered. But I cannot see the gradient rects and I cannot see the vertical lines. The coordinates should be right as I'm also using them for the text. Any idea what I'm missing and why only text is visible?

 

Thanks!

Solved! Apparently text ignores alpha but the other calls don't.