add an option to choose how to combine hires fix and refiner

modules/processing.py

@@ -1148,18 +1148,12 @@ class StableDiffusionProcessingTxt2Img(StableDiffusionProcessing):
         else:
             decoded_samples = None
 
-        current = shared.sd_model.sd_checkpoint_info
-        try:
-            if self.hr_checkpoint_info is not None:
-                self.sampler = None
-                sd_models.reload_model_weights(info=self.hr_checkpoint_info)
-                devices.torch_gc()
-
-            return self.sample_hr_pass(samples, decoded_samples, seeds, subseeds, subseed_strength, prompts)
-        finally:
-            self.sampler = None
-            sd_models.reload_model_weights(info=current)
-            devices.torch_gc()
+        with sd_models.SkipWritingToConfig():
+            sd_models.reload_model_weights(info=self.hr_checkpoint_info)
+
+        devices.torch_gc()
+
+        return self.sample_hr_pass(samples, decoded_samples, seeds, subseeds, subseed_strength, prompts)
 
     def sample_hr_pass(self, samples, decoded_samples, seeds, subseeds, subseed_strength, prompts):
         if shared.state.interrupted:

modules/sd_samplers_common.py

@@ -164,8 +164,17 @@ def apply_refiner(cfg_denoiser):
     if refiner_checkpoint_info is None or shared.sd_model.sd_checkpoint_info == refiner_checkpoint_info:
         return False
 
-    if getattr(cfg_denoiser.p, "enable_hr", False) and not cfg_denoiser.p.is_hr_pass:
-        return False
+    if getattr(cfg_denoiser.p, "enable_hr", False):
+        is_second_pass = cfg_denoiser.p.is_hr_pass
+
+        if opts.hires_fix_refiner_pass == "first pass" and is_second_pass:
+            return False
+
+        if opts.hires_fix_refiner_pass == "second pass" and not is_second_pass:
+            return False
+
+        if opts.hires_fix_refiner_pass != "second pass":
+            cfg_denoiser.p.extra_generation_params['Hires refiner'] = opts.hires_fix_refiner_pass
 
     cfg_denoiser.p.extra_generation_params['Refiner'] = refiner_checkpoint_info.short_title
     cfg_denoiser.p.extra_generation_params['Refiner switch at'] = refiner_switch_at

modules/shared_options.py

@@ -146,6 +146,7 @@ options_templates.update(options_section(('sd', "Stable Diffusion"), {
     "upcast_attn": OptionInfo(False, "Upcast cross attention layer to float32"),
     "randn_source": OptionInfo("GPU", "Random number generator source.", gr.Radio, {"choices": ["GPU", "CPU", "NV"]}, infotext="RNG").info("changes seeds drastically; use CPU to produce the same picture across different videocard vendors; use NV to produce same picture as on NVidia videocards"),
     "tiling": OptionInfo(False, "Tiling", infotext='Tiling').info("produce a tileable picture"),
+    "hires_fix_refiner_pass": OptionInfo("second pass", "Hires fix: which pass to enable refiner for", gr.Radio, {"choices": ["first pass", "second pass", "both passes"]}, infotext="Hires refiner"),
 }))
 
 options_templates.update(options_section(('sdxl', "Stable Diffusion XL"), {