[1.8][Simple][Solved]Drawing single quad with TileEntitySpecialRenderer

I copied my working 1.7 code over to 1.8 and made the necessary changes to get rid of the errors, but in-game, the quad I want to draw just doesn't appear. Does anyone know what change I need to make?

Code:

@Override
    public void renderTileEntityAt(TileEntity te, double x, double z, double something, float somethingElse, int somethingElser)
    {
        ItemStack stack = ((TileEntityFloowerPot)te).getStackInSlot(0);
        if(stack != null && stack.stackSize > 0)
        {
            GL11.glPushMatrix();
            BlockPos pos = te.getPos();
            GL11.glTranslated(pos.getX(), pos.getY(), pos.getZ());
            Tessellator t = Tessellator.getInstance();
            WorldRenderer r = t.getWorldRenderer();
            r.startDrawingQuads();
            this.bindTexture(DataReference.powderRes);
            double level = (((float)stack.stackSize / 64) * 0.3125) + 0.0625;
            r.addVertexWithUV(0.625, level, 0.625, 1.0, 1.0);
            r.addVertexWithUV(0.625, level, 0.375, 1.0, 0.0);
            r.addVertexWithUV(0.375, level, 0.375, 0.0, 0.0);
            r.addVertexWithUV(0.375, level, 0.625, 0.0, 1.0);
            t.draw();
            GL11.glPopMatrix();
        }
    }

Thanks for reading.

Hi

This tutorial project has a working example of tessellator rendering in TESR using quads

https://github.com/TheGreyGhost/MinecraftByExample

(see MBE21)

-TGG

That's a brilliant resource; thank you very much!