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fix: use fal edit as final scale adjust failover

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134 2026-07-04 20:05:31 +08:00
parent d724a542bb
commit 4d4507489f
1 changed files with 48 additions and 3 deletions
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51
lib/canvas/generate-image.ts
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@ -3128,6 +3128,22 @@ function getCanvasScaleAdjustFailoverPriority(item: CanvasModelWithProvider) {
);
}
function isCanvasScaleAdjustEmergencyFalEditModel(item: CanvasModelWithProvider) {
if (item.provider.type !== "fal-image") return false;
const descriptor = JSON.stringify([
item.model.modelId,
item.model.displayName,
item.model.capabilities,
item.model.defaultParams,
]).toLowerCase();
return (
descriptor.includes("image-edit") ||
descriptor.includes("image_urls") ||
descriptor.includes("/edit") ||
descriptor.includes(" edit")
);
}
interface CanvasImageGenConfig {
maxImages?: number;
supports1K?: boolean;
@ -3349,16 +3365,28 @@ function findCanvasFailoverModel(params: {
.map((item) => String(item || "").trim())
.filter(Boolean);
const isUsableFallback = (item: CanvasModelWithProvider) => {
const isUsableFallback = (
item: CanvasModelWithProvider,
options: { allowEmergencyFalEdit?: boolean } = {}
) => {
const isSameFamilyScaleAdjustFallback = strictScaleAdjustModelFamily
? getCanvasScaleAdjustModelFamily(item) === strictScaleAdjustModelFamily
: false;
const isEmergencyFalEditFallback =
options.allowEmergencyFalEdit === true &&
params.preferLowCostSameNameProviders &&
isCanvasScaleAdjustEmergencyFalEditModel(item);
const isSameNameScaleAdjustFallback =
params.preferLowCostSameNameProviders &&
(isSameFamilyScaleAdjustFallback ||
isEmergencyFalEditFallback ||
scoreModelNameSimilarity(params.selectedModel, item) >=
CANVAS_FAILOVER_SAME_NAME_THRESHOLD);
if (strictScaleAdjustModelFamily && !isSameFamilyScaleAdjustFallback) {
if (
strictScaleAdjustModelFamily &&
!isSameFamilyScaleAdjustFallback &&
!isEmergencyFalEditFallback
) {
return false;
}
if (
@ -3403,7 +3431,18 @@ function findCanvasFailoverModel(params: {
}
}
const usableModels = params.imageModels.filter(isUsableFallback);
let usingEmergencyFalEditFallback = false;
let usableModels = params.imageModels.filter((item) => isUsableFallback(item));
if (
usableModels.length === 0 &&
strictScaleAdjustModelFamily &&
params.preferLowCostSameNameProviders
) {
usingEmergencyFalEditFallback = true;
usableModels = params.imageModels.filter((item) =>
isUsableFallback(item, { allowEmergencyFalEdit: true })
);
}
const scoredModels = usableModels
.map((item, index) => ({
item,
@ -3412,6 +3451,12 @@ function findCanvasFailoverModel(params: {
sameProviderType: item.provider.type === params.selectedModel.provider.type,
}))
.sort((left, right) => {
if (usingEmergencyFalEditFallback) {
const leftPriority = getCanvasScaleAdjustFailoverPriority(left.item);
const rightPriority = getCanvasScaleAdjustFailoverPriority(right.item);
if (leftPriority !== rightPriority) return leftPriority - rightPriority;
return left.index - right.index;
}
if (strictScaleAdjustModelFamily) {
const leftPriority = getCanvasScaleAdjustFailoverPriority(left.item);
const rightPriority = getCanvasScaleAdjustFailoverPriority(right.item);