From b186d44dcd0df9d127a663b297334a5bd8258b58 Mon Sep 17 00:00:00 2001
From: AUTOMATIC <16777216c@gmail.com>
Date: Wed, 18 Jan 2023 23:20:23 +0300
Subject: [PATCH] use DDIM in hires fix is the sampler is PLMS

---
 modules/processing.py | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/modules/processing.py b/modules/processing.py
index 9c3673de6..8c18ac53e 100644
--- a/modules/processing.py
+++ b/modules/processing.py
@@ -857,7 +857,8 @@ class StableDiffusionProcessingTxt2Img(StableDiffusionProcessing):
 
         shared.state.nextjob()
 
-        self.sampler = sd_samplers.create_sampler(self.sampler_name, self.sd_model)
+        img2img_sampler_name = self.sampler_name if self.sampler_name != 'PLMS' else 'DDIM'  # PLMS does not support img2img so we just silently switch ot DDIM
+        self.sampler = sd_samplers.create_sampler(img2img_sampler_name, self.sd_model)
 
         samples = samples[:, :, self.truncate_y//2:samples.shape[2]-(self.truncate_y+1)//2, self.truncate_x//2:samples.shape[3]-(self.truncate_x+1)//2]