fix(api): improve handling of non-square images around tile size

api/onnx_web/chain/source_txt2img.py

@@ -6,12 +6,7 @@
 from PIL import Image
 
 from ..diffusers.load import load_pipeline
-from ..diffusers.utils import (
-    encode_prompt,
-    get_latents_from_seed,
-    get_tile_latents,
-    parse_prompt,
-)
+from ..diffusers.utils import encode_prompt, get_latents_from_seed, get_tile_latents, parse_prompt
 from ..params import ImageParams, Size, SizeChart, StageParams
 from ..server import ServerContext
 from ..worker import ProgressCallback, WorkerContext
@@ -54,23 +49,13 @@ def run(
         )
 
         tile_size = params.tiles
-
-        if max(size) > tile_size:
-            latent_size = Size(tile_size, tile_size)
-            pipe_width = pipe_height = tile_size
-        else:
-            latent_size = Size(size.width, size.height)
-            pipe_width = size.width
-            pipe_height = size.height
+        latent_size = size.min(tile_size, tile_size)
 
         # generate new latents or slice existing
         if latents is None:
-            # generate new latents
             latents = get_latents_from_seed(params.seed, latent_size, params.batch)
         else:
-            # slice existing latents
-            latents = get_tile_latents(latents, dims, Size(tile_size, tile_size))
-            pipe_width = pipe_height = tile_size
+            latents = get_tile_latents(latents, dims, latent_size)
 
         pipe_type = params.get_valid_pipeline("txt2img")
         pipe = load_pipeline(
@@ -87,8 +72,8 @@ def run(
             rng = torch.manual_seed(params.seed)
             result = pipe.text2img(
                 prompt,
-                height=pipe_height,
-                width=pipe_width,
+                height=latent_size.height,
+                width=latent_size.width,
                 generator=rng,
                 guidance_scale=params.cfg,
                 latents=latents,
@@ -108,8 +93,8 @@ def run(
             rng = np.random.RandomState(params.seed)
             result = pipe(
                 prompt,
-                height=pipe_height,
-                width=pipe_width,
+                height=latent_size.height,
+                width=latent_size.width,
                 generator=rng,
                 guidance_scale=params.cfg,
                 latents=latents,

api/onnx_web/chain/upscale_outpaint.py

@@ -71,24 +71,15 @@ def run(
                 outputs.append(source)
                 continue
 
-            size = Size(*source.size)
             tile_size = params.tiles
-            if max(size) > tile_size:
-                latent_size = Size(tile_size, tile_size)
-                pipe_width = pipe_height = tile_size
-            else:
-                latent_size = Size(size.width, size.height)
-                pipe_width = size.width
-                pipe_height = size.height
+            size = Size(*source.size)
+            latent_size = size.min(tile_size, tile_size)
 
             # generate new latents or slice existing
             if latents is None:
-                # generate new latents
                 latents = get_latents_from_seed(params.seed, latent_size, params.batch)
             else:
-                # slice existing latents and make sure there is a complete tile
-                latents = get_tile_latents(latents, dims, Size(tile_size, tile_size))
-                pipe_width = pipe_height = tile_size
+                latents = get_tile_latents(latents, dims, latent_size)
 
             if params.lpw():
                 logger.debug("using LPW pipeline for inpaint")
@@ -98,8 +89,8 @@ def run(
                     tile_mask,
                     prompt,
                     negative_prompt=negative_prompt,
-                    height=pipe_height,
-                    width=pipe_width,
+                    height=latent_size.height,
+                    width=latent_size.width,
                     num_inference_steps=params.steps,
                     guidance_scale=params.cfg,
                     generator=rng,
@@ -119,8 +110,8 @@ def run(
                     source,
                     tile_mask,
                     negative_prompt=negative_prompt,
-                    height=pipe_height,
-                    width=pipe_width,
+                    height=latent_size.height,
+                    width=latent_size.width,
                     num_inference_steps=params.steps,
                     guidance_scale=params.cfg,
                     generator=rng,

api/onnx_web/params.py

@@ -81,6 +81,9 @@ def add_border(self, border: Border):
             border.top + self.height + border.bottom,
         )
 
+    def min(self, width: int, height: int):
+        return Size(min(self.width, width), min(self.height, height))
+
     def round_to_tile(self, tile=512):
         return Size(
             ceil(self.width / tile) * tile,