Method getDrawBuffer

src/main/java/net/optifine/shaders/Shaders.java:2424–2459

(Program p, String str, int ic)

    }

    private static int getDrawBuffer(Program p, String str, int ic)
    {
        int i = 0;

        if (ic >= str.length())
        {
            return i;
        }
        else
        {
            int j = str.charAt(ic) - 48;

            if (p == ProgramShadow)
            {
                if (j >= 0 && j <= 1)
                {
                    i = j + 36064;
                    usedShadowColorBuffers = Math.max(usedShadowColorBuffers, j);
                }

                return i;
            }
            else
            {
                if (j >= 0 && j <= 7)
                {
                    p.getToggleColorTextures()[j] = true;
                    i = j + 36064;
                    usedColorAttachs = Math.max(usedColorAttachs, j);
                    usedColorBuffers = Math.max(usedColorBuffers, j);
                }

                return i;
            }
        }
    }

    private static void updateToggleBuffers(Program p)
    {