Method initDrawBuffers

src/main/java/net/optifine/shaders/Shaders.java:2369–2422

(Program p)

    }

    private static void initDrawBuffers(Program p)
    {
        int i = GL11.glGetInteger(GL20.GL_MAX_DRAW_BUFFERS);
        Arrays.fill(p.getToggleColorTextures(), false);

        if (p == ProgramFinal)
        {
            p.setDrawBuffers((IntBuffer)null);
        }
        else if (p.getId() == 0)
        {
            if (p == ProgramShadow)
            {
                p.setDrawBuffers(drawBuffersNone);
            }
            else
            {
                p.setDrawBuffers(drawBuffersColorAtt0);
            }
        }
        else
        {
            String s = p.getDrawBufSettings();

            if (s == null)
            {
                if (p != ProgramShadow && p != ProgramShadowSolid && p != ProgramShadowCutout)
                {
                    p.setDrawBuffers(dfbDrawBuffers);
                    usedDrawBuffers = usedColorBuffers;
                    Arrays.fill(p.getToggleColorTextures(), 0, usedColorBuffers, true);
                }
                else
                {
                    p.setDrawBuffers(sfbDrawBuffers);
                }
            }
            else
            {
                IntBuffer intbuffer = p.getDrawBuffersBuffer();
                int j = s.length();
                usedDrawBuffers = Math.max(usedDrawBuffers, j);
                j = Math.min(j, i);
                p.setDrawBuffers(intbuffer);
                intbuffer.limit(j);

                for (int k = 0; k < j; ++k)
                {
                    int l = getDrawBuffer(p, s, k);
                    intbuffer.put(k, l);
                }
            }
        }
    }

    private static int getDrawBuffer(Program p, String str, int ic)
    {