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Add LTXVContextWindows node

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This commit is contained in:
ozbayb 2026-04-24 12:18:22 -06:00
parent 4e434bccaa
commit e949250876
1 changed files with 39 additions and 3 deletions
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42
comfy_extras/nodes_context_windows.py
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@ -89,9 +89,44 @@ class WanContextWindowsManualNode(ContextWindowsManualNode):
@classmethod
def execute(cls, model: io.Model.Type, context_length: int, context_overlap: int, context_schedule: str, context_stride: int, closed_loop: bool, fuse_method: str, freenoise: bool,
cond_retain_index_list: list[int]=[], split_conds_to_windows: bool=False) -> io.Model:
context_length = max(((context_length - 1) // 4) + 1, 1) # at least length 1
context_overlap = max(((context_overlap - 1) // 4) + 1, 0) # at least overlap 0
return super().execute(model, context_length, context_overlap, context_schedule, context_stride, closed_loop, fuse_method, dim=2, freenoise=freenoise, cond_retain_index_list=cond_retain_index_list, split_conds_to_windows=split_conds_to_windows)
context_length = max(((context_length - 1) // 4) + 1, 1) # at least length 1
context_overlap = max(context_overlap // 4, 0) # at least overlap 0
return super().execute(model, context_length, context_overlap, context_schedule, context_stride, closed_loop, fuse_method, dim=2, freenoise=freenoise, cond_retain_index_list=cond_retain_index_list, split_conds_to_windows=split_conds_to_windows, apply_causal_anchor_prefix=False)
class LTXVContextWindowsNode(ContextWindowsManualNode):
@classmethod
def define_schema(cls) -> io.Schema:
schema = super().define_schema()
schema.node_id = "LTXVContextWindows"
schema.display_name = "LTXV Context Windows"
schema.description = "Set context windows for LTXV-like models."
schema.inputs = [
io.Model.Input("model", tooltip="The model to apply context windows to during sampling."),
io.Int.Input("context_length", min=1, max=nodes.MAX_RESOLUTION, step=8, default=97, tooltip="The length of the context window in pixel frames. Must be 8*n + 1."),
io.Int.Input("context_overlap", min=0, step=8, default=32, tooltip="The overlap of the context window in pixel frames."),
io.Combo.Input("context_schedule", options=[
comfy.context_windows.ContextSchedules.STATIC_STANDARD,
comfy.context_windows.ContextSchedules.UNIFORM_STANDARD,
comfy.context_windows.ContextSchedules.UNIFORM_LOOPED,
comfy.context_windows.ContextSchedules.BATCHED,
], tooltip="The stride of the context window."),
io.Combo.Input("fuse_method", options=comfy.context_windows.ContextFuseMethods.LIST_STATIC, default=comfy.context_windows.ContextFuseMethods.PYRAMID, tooltip="The method to use to fuse the context windows."),
io.Boolean.Input("freenoise", default=False, tooltip="Whether to apply FreeNoise noise shuffling, improves window blending."),
io.Boolean.Input("retain_first_frame", default=False, tooltip="Retain the first latent frame in every context window."),
io.Int.Input("context_stride", min=1, default=1, tooltip="The stride of the context window; only applicable to uniform schedules.", advanced=True),
io.Boolean.Input("closed_loop", default=False, tooltip="Whether to close the context window loop; only applicable to looped schedules.", advanced=True),
]
return schema
@classmethod
def execute(cls, model: io.Model.Type, context_length: int, context_overlap: int, context_schedule: str, fuse_method: str, freenoise: bool,
retain_first_frame: bool=False, context_stride: int=1, closed_loop: bool=False) -> io.Model:
context_length = max(((context_length - 1) // 8) + 1, 1) # at least length 1
context_overlap = max(context_overlap // 8, 0) # at least overlap 0
retain_list = "0" if retain_first_frame else ""
return super().execute(model, context_length, context_overlap, context_schedule, context_stride, closed_loop, fuse_method, dim=2, freenoise=freenoise,
cond_retain_index_list=retain_list, latent_retain_index_list=retain_list)
class ContextWindowsExtension(ComfyExtension):
@ -99,6 +134,7 @@ class ContextWindowsExtension(ComfyExtension):
return [
ContextWindowsManualNode,
WanContextWindowsManualNode,
LTXVContextWindowsNode,
]
def comfy_entrypoint():