Method getUsableTlut

libs/JSystem/J2DGraph/J2DPictureEx.cpp:1220–1248

}

u8 J2DPictureEx::getUsableTlut(u8 id)
{
    u8 usedTexFlags = 0;
    u32 texNum      = mMaterial->getTexGenBlock()->getTexGenNum();
    for (u8 i = 0; i < texNum; i++) {
        JUTTexture* texture = mMaterial->getTevBlock()->getTexture(i);
        if (i != id && texture != nullptr) {
            const ResTIMG* img = texture->getTexInfo();

            if (img != nullptr && img->mPaletteFormat != 0) {
                int name   = texture->getTlutName();
                int tlutID = name >= GX_BIGTLUT0 ? GX_BIGTLUT0 : GX_TLUT0;

                u8 diffID = name - tlutID;
                if (diffID < 8) {
                    usedTexFlags |= (1 << diffID);
                }
            }
        }
    }

    for (u8 i = 0; i < 8; i++) {
        if (!(usedTexFlags & (1 << i))) {
            return i;
        }
    }

    return 0;
}