Speed up TAESD preview.

comfyanonymous · comfyanonymous · commit 58c9838274f5 · 2024-05-24T02:37:57.000-04:00
diff --git a/latent_preview.py b/latent_preview.py
@@ -25,9 +25,8 @@ def __init__(self, taesd):
 
     def decode_latent_to_preview(self, x0):
         x_sample = self.taesd.decode(x0[:1])[0].detach()
-        x_sample = torch.clamp((x_sample + 1.0) / 2.0, min=0.0, max=1.0)
-        x_sample = 255. * np.moveaxis(x_sample.cpu().numpy(), 0, 2)
-        x_sample = x_sample.astype(np.uint8)
+        x_sample = 255. * torch.clamp((x_sample + 1.0) / 2.0, min=0.0, max=1.0)
+        x_sample = np.moveaxis(x_sample.to(device="cpu", dtype=torch.uint8, non_blocking=comfy.model_management.device_supports_non_blocking(x_sample.device)).numpy(), 0, 2)
 
         preview_image = Image.fromarray(x_sample)
         return preview_image
