| import torch | |
| import comfy.ops | |
| def pad_to_patch_size(img, patch_size=(2, 2), padding_mode="circular"): | |
| if padding_mode == "circular" and (torch.jit.is_tracing() or torch.jit.is_scripting()): | |
| padding_mode = "reflect" | |
| pad_h = (patch_size[0] - img.shape[-2] % patch_size[0]) % patch_size[0] | |
| pad_w = (patch_size[1] - img.shape[-1] % patch_size[1]) % patch_size[1] | |
| return torch.nn.functional.pad(img, (0, pad_w, 0, pad_h), mode=padding_mode) | |
| try: | |
| rms_norm_torch = torch.nn.functional.rms_norm | |
| except: | |
| rms_norm_torch = None | |
| def rms_norm(x, weight=None, eps=1e-6): | |
| if rms_norm_torch is not None and not (torch.jit.is_tracing() or torch.jit.is_scripting()): | |
| if weight is None: | |
| return rms_norm_torch(x, (x.shape[-1],), eps=eps) | |
| else: | |
| return rms_norm_torch(x, weight.shape, weight=comfy.ops.cast_to(weight, dtype=x.dtype, device=x.device), eps=eps) | |
| else: | |
| r = x * torch.rsqrt(torch.mean(x**2, dim=-1, keepdim=True) + eps) | |
| if weight is None: | |
| return r | |
| else: | |
| return r * comfy.ops.cast_to(weight, dtype=x.dtype, device=x.device) | |