Size Qwen 2.1 Generate from the bench aspect table.

Wire EmptyLatentImage to the official ~1 MP grid so 16:9 lands at 1536×864, keep PE wh_ratio advisory, and leave Edit on the encode latent from image_1.

Co-authored-by: Cursor <cursoragent@cursor.com>

server/assets/studio2_qwen21_t2i.json

@@ -40,6 +40,15 @@
     "class_type": "TextEncodeQwenImage21",
     "_meta": { "title": "Text Encode Qwen Image 2.1" }
   },
+  "16": {
+    "inputs": {
+      "width": 1024,
+      "height": 1024,
+      "batch_size": 1
+    },
+    "class_type": "EmptyLatentImage",
+    "_meta": { "title": "Qwen 2.1 canvas" }
+  },
   "15": {
     "inputs": {
       "seed": 1,
@@ -51,7 +60,7 @@
       "model": ["3", 0],
       "positive": ["9", 0],
       "negative": ["9", 1],
-      "latent_image": ["9", 2]
+      "latent_image": ["16", 0]
     },
     "class_type": "KSampler",
     "_meta": { "title": "KSampler" }

server/utils/studio2/runner.ts

@@ -14,7 +14,7 @@ import qwen21PeT2iTemplate from '../../assets/studio2_qwen21_pe_t2i.json'
 import qwen21PeEditTemplate from '../../assets/studio2_qwen21_pe_edit.json';
 import { nativeVideoGraph, attachHeroReference, applyResolvedImageSize } from '~/shared/studio2/graphs.mjs';
 import { compilePrompt, scopedFile } from '~/shared/studio2/contracts.mjs';
-import { resolveQwen21Size } from '~/shared/studio2/input.mjs';
+import { resolveQwen21Size } from '~/shared/studio2/qwen21-size.mjs';
 import { createJob, restoreJob, getJob, emitJob, type Job } from '../jobs';
 import { markStudioLive, onLiveVideoSettled, type StudioJob } from '../studioQueue';
 import { readRecord, saveRecord, studio2Root, records } from './store';
@@ -252,41 +252,38 @@ async function prepareGraph(r: any) {
             }
             graph['9'].inputs.prompt = prompt
             graph['9'].inputs.negative_prompt = stylePrompt(q.imageStyles, true)
+            // Official edit: sampler latent comes from TextEncode (sized from image_1).
+            // Do not inject EmptyLatentImage — a mismatched empty canvas shifts the edit.
             graph['9'].inputs.resolution = 1024
-            if (s.aspect && s.aspect !== 'auto') {
-                graph['16'] = {
-                    inputs: { width: s.width, height: s.height, batch_size: 1 },
-                    class_type: 'EmptyLatentImage',
-                    _meta: { title: 'Qwen edit canvas' }
-                }
-                graph['15'].inputs.latent_image = ['16', 0]
-            }
             graph['15'].inputs.seed = s.seed
             graph['15'].inputs.steps = s.steps || 25
             graph['15'].inputs.cfg = s.cfg ?? 1
             graph['15'].inputs.sampler_name = 'euler'
             graph['15'].inputs.scheduler = 'simple'
             graph['21'].inputs.filename_prefix = prefix + '/image'
-            r.sampleLatent = s.aspect && s.aspect !== 'auto' ? 'qwen21 empty latent' : 'qwen21 edit latent'
+            r.sampleLatent = 'qwen21 edit latent'
             r.sampleDenoise = null
             r.heroReferenceAttached = false
             r.graphId = 'studio2_qwen21_edit.json'
         } else {
+            // Bench aspect is law for Generate. PE wh_ratio is advisory only (never sizes the canvas).
             const size = resolveQwen21Size(s.aspect)
             s.width = size.width
             s.height = size.height
             graph = structuredClone(qwen21Template)
             graph['9'].inputs.prompt = q.compiledPrompt
             graph['9'].inputs.negative_prompt = stylePrompt(q.imageStyles, true)
-            // TextEncodeQwenImage21 builds the 64-ch empty latent from resolution (square T2I).
-            graph['9'].inputs.resolution = Math.max(size.width, size.height)
+            // TextEncode conditioning only — EmptyLatentImage (node 16) owns canvas size, matching the official T2I template.
+            graph['9'].inputs.resolution = 1024
+            graph['16'].inputs.width = size.width
+            graph['16'].inputs.height = size.height
             graph['15'].inputs.seed = s.seed
             graph['15'].inputs.steps = s.steps || 25
             graph['15'].inputs.cfg = s.cfg ?? 1
             graph['15'].inputs.sampler_name = 'euler'
             graph['15'].inputs.scheduler = 'simple'
             graph['21'].inputs.filename_prefix = prefix + '/image'
-            r.sampleLatent = 'qwen21 textencode latent'
+            r.sampleLatent = 'qwen21 empty latent'
             r.sampleDenoise = null
             r.heroReferenceAttached = false
             r.graphId = 'studio2_qwen21_t2i.json'