From f0a171923cc8240177302f3dccb6177a2c646ab3 Mon Sep 17 00:00:00 2001
From: Volpeon <git@volpeon.ink>
Date: Thu, 11 May 2023 18:37:43 +0200
Subject: Update

---
 training/functional.py | 24 +++++++++++++++---------
 1 file changed, 15 insertions(+), 9 deletions(-)

(limited to 'training')

diff --git a/training/functional.py b/training/functional.py
index eae5681..49c21c7 100644
--- a/training/functional.py
+++ b/training/functional.py
@@ -27,6 +27,7 @@ from models.convnext.discriminator import ConvNeXtDiscriminator
 from training.util import AverageMeter
 from training.sampler import ScheduleSampler, LossAwareSampler, UniformSampler
 from util.slerp import slerp
+from util.noise import perlin_noise
 
 
 def const(result=None):
@@ -350,28 +351,33 @@ def loss_step(
         device=latents.device,
         generator=generator
     )
+    applied_noise = noise
 
     if offset_noise_strength != 0:
-        offset_noise = torch.randn(
-            (latents.shape[0], latents.shape[1], 1, 1),
+        applied_noise = applied_noise + offset_noise_strength * perlin_noise(
+            latents.shape,
+            res=1,
+            octaves=4,
             dtype=latents.dtype,
             device=latents.device,
             generator=generator
-        ).expand(noise.shape)
-        noise = noise + offset_noise_strength * offset_noise
+        )
 
     if input_pertubation != 0:
-        new_noise = noise + input_pertubation * torch.randn_like(noise)
+        applied_noise = applied_noise + input_pertubation * torch.randn(
+            latents.shape,
+            dtype=latents.dtype,
+            layout=latents.layout,
+            device=latents.device,
+            generator=generator
+        )
 
     # Sample a random timestep for each image
     timesteps, weights = schedule_sampler.sample(bsz, latents.device)
 
     # Add noise to the latents according to the noise magnitude at each timestep
     # (this is the forward diffusion process)
-    if input_pertubation != 0:
-        noisy_latents = noise_scheduler.add_noise(latents, new_noise, timesteps)
-    else:
-        noisy_latents = noise_scheduler.add_noise(latents, noise, timesteps)
+    noisy_latents = noise_scheduler.add_noise(latents, applied_noise, timesteps)
     noisy_latents = noisy_latents.to(dtype=unet.dtype)
 
     # Get the text embedding for conditioning
-- 
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