 text embeddings will be generated from prompt input argument.   prompt_attention_mask (torch.FloatTensor, optional) — Pre-generated attention mask for text embeddings.   negative_prompt_embeds (torch.FloatTensor, optional) —
Pre-generated negative text embeddings. For PixArt-Alpha this negative prompt should be "". If not
provided, negative_prompt_embeds will be generated from negative_prompt input argument.   negative_prompt_attention_mask (t