What I have:

    @SubscribeEvent
    public static void onRenderCrosshair(RenderGameOverlayEvent.Pre event)
    {
        if (event.getType() == RenderGameOverlayEvent.ElementType.CROSSHAIRS)
        {
            event.setCanceled(true);
          int screenHeight = event.getWindow().getScaledHeight();
          int screenWidth = event.getWindow().getScaledWidth();
          minecraft.getTextureManager().bindTexture(REC);
          Tessellator tessellator = Tessellator.getInstance();
          BufferBuilder bufferbuilder = tessellator.getBuffer();
          bufferbuilder.begin(7, DefaultVertexFormats.POSITION_TEX);
          bufferbuilder.pos(screenWidth / 2.0D - 1, screenHeight / 2.0D, -90.0D).tex(0.0F, 1.0F).endVertex();
          bufferbuilder.pos(screenWidth / 2.0D - 1, screenHeight / - 5, -90.0D).tex(0.0F, 0.0F).endVertex();
          bufferbuilder.pos(screenWidth / 2.0D + 30, screenHeight /, -90.0D).tex(1.0F, 1.0F).endVertex();
          bufferbuilder.pos(screenWidth / 2.0D + 30, screenHeight / - 5, -90.0D).tex(1.0F, 0.0F).endVertex();
          tessellator.draw();
        }
    }

What it shows:

Any ideas? (the texture is a pure green 16x16 png file)

4 hours ago, poopoodice said:

screenWidth / 2.0D + 30, screenHeight /, -90.0D

Looks like there's a typo there