* feat(flux): add scheduler selection for Flux models
Add support for alternative diffusers Flow Matching schedulers:
- Euler (default, 1st order)
- Heun (2nd order, better quality, 2x slower)
- LCM (optimized for few steps)
Backend:
- Add schedulers.py with scheduler type definitions and class mapping
- Modify denoise.py to accept optional scheduler parameter
- Add scheduler InputField to flux_denoise invocation (v4.2.0)
Frontend:
- Add fluxScheduler to Redux state and paramsSlice
- Create ParamFluxScheduler component for Linear UI
- Add scheduler to buildFLUXGraph for generation
* fix(flux): prevent progress percentage overflow with LCM scheduler
LCM scheduler may have more internal timesteps than user-facing steps,
causing user_step to exceed total_steps. This resulted in progress
percentage > 1.0, which caused a pydantic validation error.
Fix: Only call step_callback when user_step <= total_steps.
* Ruff format
* fix(flux): remove initial step-0 callback for consistent step count
Remove the initial step_callback at step=0 to match SD/SDXL behavior.
Previously Flux showed N+1 steps (step 0 + N denoising steps), while
SD/SDXL showed only N steps. Now all models display N steps consistently.
* feat(flux): add scheduler support with metadata recall
- Handle LCM scheduler by using num_inference_steps instead of custom sigmas
- Fix progress bar to show user-facing steps instead of internal scheduler steps
- Pass scheduler parameter to Flux denoise node in graph builder
- Add model-aware metadata recall for Flux scheduler
---------
Co-authored-by: Jonathan <34005131+JPPhoto@users.noreply.github.com>
Co-authored-by: Lincoln Stein <lincoln.stein@gmail.com>
* feat(flux): add scheduler selection for Flux models
Add support for alternative diffusers Flow Matching schedulers:
- Euler (default, 1st order)
- Heun (2nd order, better quality, 2x slower)
- LCM (optimized for few steps)
Backend:
- Add schedulers.py with scheduler type definitions and class mapping
- Modify denoise.py to accept optional scheduler parameter
- Add scheduler InputField to flux_denoise invocation (v4.2.0)
Frontend:
- Add fluxScheduler to Redux state and paramsSlice
- Create ParamFluxScheduler component for Linear UI
- Add scheduler to buildFLUXGraph for generation
* feat(z-image): add scheduler selection for Z-Image models
Add support for alternative diffusers Flow Matching schedulers for Z-Image:
- Euler (default) - 1st order, optimized for Z-Image-Turbo (8 steps)
- Heun (2nd order) - Better quality, 2x slower
- LCM - Optimized for few-step generation
Backend:
- Extend schedulers.py with Z-Image scheduler types and mapping
- Add scheduler InputField to z_image_denoise invocation (v1.3.0)
- Refactor denoising loop to support diffusers schedulers
Frontend:
- Add zImageScheduler to Redux state in paramsSlice
- Create ParamZImageScheduler component for Linear UI
- Add scheduler to buildZImageGraph for generation
* fix ruff check
* fix(schedulers): prevent progress percentage overflow with LCM scheduler
LCM scheduler may have more internal timesteps than user-facing steps,
causing user_step to exceed total_steps. This resulted in progress
percentage > 1.0, which caused a pydantic validation error.
Fix: Only call step_callback when user_step <= total_steps.
* Ruff format
* fix(schedulers): remove initial step-0 callback for consistent step count
Remove the initial step_callback at step=0 to match SD/SDXL behavior.
Previously Flux/Z-Image showed N+1 steps (step 0 + N denoising steps),
while SD/SDXL showed only N steps. Now all models display N steps
consistently in the server log.
* feat(z-image): add scheduler support with metadata recall
- Handle LCM scheduler by using num_inference_steps instead of custom sigmas
- Fix progress bar to show user-facing steps instead of internal scheduler steps
- Pass scheduler parameter to Z-Image denoise node in graph builder
- Add model-aware metadata recall for Flux and Z-Image schedulers
---------
Co-authored-by: Jonathan <34005131+JPPhoto@users.noreply.github.com>
Co-authored-by: Lincoln Stein <lincoln.stein@gmail.com>
When using GGUF-quantized models on MPS (Apple Silicon), the
dequantized tensors could end up on a different device than the
other operands in math operations, causing "Expected all tensors
to be on the same device" errors.
This fix ensures that after dequantization, tensors are moved to
the same device as the other tensors in the operation.
Co-authored-by: Lincoln Stein <lincoln.stein@gmail.com>
Add local_files_only fallback for Qwen3 tokenizer loading in both
Checkpoint and GGUF loaders. This ensures Z-Image models can generate
images offline after the initial tokenizer download.
The tokenizer is now loaded with local_files_only=True first, falling
back to network download only if files aren't cached yet.
Fixes#8716
Co-authored-by: Lincoln Stein <lincoln.stein@gmail.com>
* feat: Implement PBR Maps Generation Node
* feat(ui): Add PBR Maps Generation to UI
* chore: fix typegen checks
* chore: possible fix for nvidia 5000 series cards
* fix: Use safetensor models for PBR maps instead of pickles.
* fix: incorrect naming of upconv_block for PBR network
* fix: incorrect naming of displacement map variable
* chore: add relevant docs to the PBR generate function
* fix: clear cuda cache after loading state_dict for PBR maps
* fix: load torch_device only once as multiple models are loaded
* chore(ui): update the filter icon for PBR to CubeBold
More relevant
---------
Co-authored-by: Lincoln Stein <lincoln.stein@gmail.com>
* Fix an issue with multiple quick-queued generations after moving bbox
After moving the canvas bbox we still handed out the previous regional-guidance mask because only two parts of the system knew anything had changed. The adapter’s
cache key doesn’t include the bbox, so the next few graph builds reused the stale mask from before the move; if the user queued several runs back‑to‑back, every
background enqueue except the last skipped rerasterizing altogether because another raster job was still in flight. The fix makes the canvas manager invalidate each
region adapter’s cached mask whenever the bbox (or a related setting) changes, and—if a reraster is already running—queues up and waits instead of bailing. Now the
first run after a bbox edit forces a new mask, and rapid-fire enqueues just wait their turn, so every queued generation gets the correct regional prompt.
* (fix) Update invokeai/frontend/web/src/features/controlLayers/konva/CanvasStateApiModule.ts
Fixes race condition identified during copilot review.
Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>
* Update invokeai/frontend/web/src/features/controlLayers/konva/CanvasStateApiModule.ts
Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>
* Apply suggestions from code review
Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>
---------
Co-authored-by: Lincoln Stein <lincoln.stein@gmail.com>
Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>
* fix(ui): make Z-Image model selects mutually exclusive
VAE and Qwen3 Encoder selects are disabled when Qwen3 Source is selected,
and vice versa. This prevents invalid model combinations.
* feat(ui): auto-select Z-Image component models on model change
When switching to a Z-Image model, automatically set valid defaults
if no configuration exists:
- Prefers Qwen3 Source (Diffusers model) if available
- Falls back to Qwen3 Encoder + FLUX VAE combination
This ensures the generate button is enabled immediately after selecting
a Z-Image model, without requiring manual configuration.
* fix(ui): save and restore Qwen3 Source model in metadata
Qwen3 Source (Diffusers Z-Image) model was not being saved to image
metadata or restored during Remix. This adds:
- Saving qwen3_source to metadata in buildZImageGraph
- ZImageQwen3SourceModel metadata handler for parsing and recall
- i18n translation for qwen3Source
Changes image self-attention from restricted (region-isolated) to unrestricted
(all image tokens can attend to each other), similar to the FLUX approach.
This fixes the issue where ZImage-Turbo with multiple regional guidance layers
would generate two separate/disconnected images instead of compositing them
into a single unified image.
The regional text-image attention remains restricted so that each region still
responds to its corresponding prompt.
Fixes#8715
Two fixes for Z-Image LoRA support:
1. Override _validate_looks_like_lora in LoRA_LyCORIS_ZImage_Config to
recognize Z-Image specific LoRA formats that use different key patterns
than SD/SDXL LoRAs. Z-Image LoRAs use lora_down.weight/lora_up.weight
and dora_scale suffixes instead of lora_A.weight/lora_B.weight.
2. Fix _group_by_layer in z_image_lora_conversion_utils.py to correctly
group LoRA keys by layer name. The previous logic used rsplit with
maxsplit=2 which incorrectly grouped keys like:
- "to_k.alpha" -> layer "diffusion_model.layers.17.attention"
- "lora_down.weight" -> layer "diffusion_model.layers.17.attention.to_k"
Now uses suffix matching to ensure all keys for a layer are grouped
together (alpha, dora_scale, lora_down.weight, lora_up.weight).
* feat: Add Regional Guidance support for Z-Image model
Implements regional prompting for Z-Image (S3-DiT Transformer) allowing
different prompts to affect different image regions using attention masks.
Backend changes:
- Add ZImageRegionalPromptingExtension for mask preparation
- Add ZImageTextConditioning and ZImageRegionalTextConditioning data classes
- Patch transformer forward to inject 4D regional attention masks
- Use additive float mask (0.0 attend, -inf block) in bfloat16 for compatibility
- Alternate regional/full attention layers for global coherence
Frontend changes:
- Update buildZImageGraph to support regional conditioning collectors
- Update addRegions to create z_image_text_encoder nodes for regions
- Update addZImageLoRAs to handle optional negCond when guidance_scale=0
- Add Z-Image validation (no IP adapters, no autoNegative)
* @Pfannkuchensack
Fix windows path again
* ruff check fix
* ruff formating
* fix(ui): Z-Image CFG guidance_scale check uses > 1 instead of > 0
Changed the guidance_scale check from > 0 to > 1 for Z-Image models.
Since Z-Image uses guidance_scale=1.0 as "no CFG" (matching FLUX convention),
negative conditioning should only be created when guidance_scale > 1.
---------
Co-authored-by: Lincoln Stein <lincoln.stein@gmail.com>
* (bugfix)(mm) work around Windows being unable to rmtree tmp directories after GGUF install
* (style) fix ruff error
* (fix) add workaround for Windows Permission Denied on GGUF file move() call
* (fix) perform torch copy() in GGUF reader to avoid deletion failures on Windows
* (style) fix ruff formatting issues
Add support for loading Flux LoRA models in the xlabs format, which uses
keys like `double_blocks.X.processor.{qkv|proj}_lora{1|2}.{down|up}.weight`.
The xlabs format maps:
- lora1 -> img_attn (image attention stream)
- lora2 -> txt_attn (text attention stream)
- qkv -> query/key/value projection
- proj -> output projection
Changes:
- Add FluxLoRAFormat.XLabs enum value
- Add flux_xlabs_lora_conversion_utils.py with detection and conversion
- Update formats.py to detect xlabs format
- Update lora.py loader to handle xlabs format
- Update model probe to accept recognized Flux LoRA formats
- Add unit tests for xlabs format detection and conversion
Co-authored-by: Lincoln Stein <lincoln.stein@gmail.com>
* Feature: Add Tag System for user made Workflows
* feat(ui): display tags on workflow library tiles
Show workflow tags at the bottom of each tile in the workflow browser,
making it easier to identify workflow categories at a glance.
---------
Co-authored-by: Lincoln Stein <lincoln.stein@gmail.com>
* feat(nodes): add Prompt Template node
Add a new node that applies Style Preset templates to prompts in workflows.
The node takes a style preset ID and positive/negative prompts as inputs,
then replaces {prompt} placeholders in the template with the provided prompts.
This makes Style Preset templates accessible in Workflow mode, enabling
users to apply consistent styling across their workflow-based generations.
* feat(nodes): add StylePresetField for database-driven preset selection
Adds a new StylePresetField type that enables dropdown selection of
style presets from the database in the workflow editor.
Changes:
- Add StylePresetField to backend (fields.py)
- Update Prompt Template node to use StylePresetField instead of string ID
- Add frontend field type definitions (zod schemas, type guards)
- Create StylePresetFieldInputComponent with Combobox
- Register field in InputFieldRenderer and nodesSlice
- Add translations for preset selection
* fix schema.ts on windows.
* chore(api): regenerate schema.ts after merge
---------
Co-authored-by: Claude <noreply@anthropic.com>
* fix(model-install): support multi-subfolder downloads for Z-Image Qwen3 encoder
The Z-Image Qwen3 text encoder requires both text_encoder and tokenizer
subfolders from the HuggingFace repo, but the previous implementation
only downloaded the text_encoder subfolder, causing model identification
to fail.
Changes:
- Add subfolders property to HFModelSource supporting '+' separated paths
- Extend filter_files() and download_urls() to handle multiple subfolders
- Update _multifile_download() to preserve subfolder structure
- Make Qwen3Encoder probe check both nested and direct config.json paths
- Update Qwen3EncoderLoader to handle both directory structures
- Change starter model source to text_encoder+tokenizer
* ruff format
* fix schema description
* fix schema description
---------
Co-authored-by: Lincoln Stein <lincoln.stein@gmail.com>
* feat(ui): add model path update for external models
Add ability to update file paths for externally managed models (models with
absolute paths). Invoke-controlled models (with relative paths in the models
directory) are excluded from this feature to prevent breaking internal
model management.
- Add ModelUpdatePathButton component with modal dialog
- Only show button for external models (absolute path check)
- Add translations for path update UI elements
* Added support for Windows UNC paths in ModelView.tsx:38-41. The isExternalModel function now detects:
Unix absolute paths: /home/user/models/...
Windows drive paths: C:\Models\... or D:/Models/...
Windows UNC paths: \\ServerName\ShareName\... or //ServerName/ShareName/...
* fix(ui): validate path format in Update Path modal to prevent invalid paths
When updating an external model's path, the new path is now validated to ensure
it follows an absolute path format (Unix, Windows drive, or UNC). This prevents
users from accidentally entering invalid paths that would cause the Update Path
button to disappear, leaving them unable to correct the mistake.
* fix(ui): extract isExternalModel to separate file to fix circular dependency
Moves the isExternalModel utility function to its own file to break the
circular dependency between ModelView.tsx and ModelUpdatePathButton.tsx.
---------
Co-authored-by: Lincoln Stein <lincoln.stein@gmail.com>
Add higher quality Q8_0 quantization option for Z-Image Turbo (~6.6GB)
to complement existing Q4_K variant, providing better quality for users
with more VRAM.
Add dedicated Z-Image ControlNet Tile model (~6.7GB) for upscaling and
detail enhancement workflows.
* chore: localize extraction errors
* chore: rename extract masked area menu item
* chore: rename inpaint mask extract component
* fix: use mask bounds for extraction region
* Prettier format applied to InpaintMaskMenuItemsExtractMaskedArea.tsx
* Fix base64 image import bug in extracted area in InpaintMaskMenuItemsExtractMaskedArea.tsx and removed unused locales entries in en.json
* Fix formatting issue in InpaintMaskMenuItemsExtractMaskedArea.tsx
* Minor comment fix
---------
Co-authored-by: Lincoln Stein <lincoln.stein@gmail.com>
GGUF Z-Image models store x_pad_token and cap_pad_token with shape [dim],
but diffusers ZImageTransformer2DModel expects [1, dim]. This caused a
RuntimeError when loading GGUF-quantized Z-Image models.
The fix dequantizes GGMLTensors first (since they don't support unsqueeze),
then reshapes to add the batch dimension.
* fix(ui): 🐛 `HotkeysModal` and `SettingsModal` initial focus
instead of using the `initialFocusRef` prop, the `Modal` component was focusing on the last available Button. This is a workaround that uses `tabIndex` instead which seems to be working.
Closes#8685
* style: 🚨 satisfy linter
---------
Co-authored-by: Lincoln Stein <lincoln.stein@gmail.com>
Add Z-Image Turbo and related models to the starter models list:
- Z-Image Turbo (full precision, ~13GB)
- Z-Image Turbo quantized (GGUF Q4_K, ~4GB)
- Z-Image Qwen3 Text Encoder (full precision, ~8GB)
- Z-Image Qwen3 Text Encoder quantized (GGUF Q6_K, ~3.3GB)
- Z-Image ControlNet Union (Canny, HED, Depth, Pose, MLSD, Inpainting)
The quantized Turbo model includes the quantized Qwen3 encoder as a
dependency for automatic installation.
Implement Z-Image ControlNet as an Extension pattern (similar to FLUX ControlNet)
instead of merging control weights into the base transformer. This provides:
- Lower memory usage (no weight duplication)
- Flexibility to enable/disable control per step
- Cleaner architecture with separate control adapter
Key implementation details:
- ZImageControlNetExtension: computes control hints per denoising step
- z_image_forward_with_control: custom forward pass with hint injection
- patchify_control_context: utility for control image patchification
- ZImageControlAdapter: standalone adapter with control_layers and noise_refiner
Architecture matches original VideoX-Fun implementation:
- Hints computed ONCE using INITIAL unified state (before main layers)
- Hints injected at every other main transformer layer (15 control blocks)
- Control signal added after each designated layer's forward pass
V2.0 ControlNet support (control_in_dim=33):
- Channels 0-15: control image latents
- Channels 16-31: reference image (zeros for pure control)
- Channel 32: inpaint mask (1.0 = don't inpaint, use control signal)
VRAM usage is high.
- Auto-detect control_in_dim from adapter weights (16 for V1, 33 for V2.0)
- Auto-detect n_refiner_layers from state dict
- Add zero-padding for V2.0's additional channels
- Use accelerate.init_empty_weights() for efficient model creation
- Add ControlNet_Checkpoint_ZImage_Config to frontend schema
feat: Add Z-Image ControlNet support with spatial conditioning
Add comprehensive ControlNet support for Z-Image models including:
Backend:
- New ControlNet_Checkpoint_ZImage_Config for Z-Image control adapter models
- Z-Image control key detection (_has_z_image_control_keys) to identify control layers
- ZImageControlAdapter loader for standalone control models
- ZImageControlTransformer2DModel combining base transformer with control layers
- Memory-efficient model loading by building combined state dict
The previous mixed-precision optimization for FP32 mode only converted
some VAE decoder layers (post_quant_conv, conv_in, mid_block) to the
latents dtype while leaving others (up_blocks, conv_norm_out) in float32.
This caused "expected scalar type Half but found Float" errors after
recent diffusers updates.
Simplify FP32 mode to consistently use float32 for both VAE and latents,
removing the incomplete mixed-precision logic. This trades some VRAM
usage for stability and correctness.
Also removes now-unused attention processor imports.
