chore: import upstream snapshot with attribution

invokeai/app/invocations/cogview4_text_encoder.py

@@ -0,0 +1,100 @@
+import torch
+from transformers import GlmModel, PreTrainedTokenizerFast
+
+from invokeai.app.invocations.baseinvocation import BaseInvocation, Classification, invocation
+from invokeai.app.invocations.fields import FieldDescriptions, Input, InputField, UIComponent
+from invokeai.app.invocations.model import GlmEncoderField
+from invokeai.app.invocations.primitives import CogView4ConditioningOutput
+from invokeai.app.services.shared.invocation_context import InvocationContext
+from invokeai.backend.model_manager.load.model_cache.utils import get_effective_device
+from invokeai.backend.stable_diffusion.diffusion.conditioning_data import (
+    CogView4ConditioningInfo,
+    ConditioningFieldData,
+)
+
+# The CogView4 GLM Text Encoder max sequence length set based on the default in diffusers.
+COGVIEW4_GLM_MAX_SEQ_LEN = 1024
+
+
+@invocation(
+    "cogview4_text_encoder",
+    title="Prompt - CogView4",
+    tags=["prompt", "conditioning", "cogview4"],
+    category="prompt",
+    version="1.0.0",
+    classification=Classification.Prototype,
+)
+class CogView4TextEncoderInvocation(BaseInvocation):
+    """Encodes and preps a prompt for a cogview4 image."""
+
+    prompt: str = InputField(description="Text prompt to encode.", ui_component=UIComponent.Textarea)
+    glm_encoder: GlmEncoderField = InputField(
+        title="GLM Encoder",
+        description=FieldDescriptions.glm_encoder,
+        input=Input.Connection,
+    )
+
+    @torch.no_grad()
+    def invoke(self, context: InvocationContext) -> CogView4ConditioningOutput:
+        glm_embeds = self._glm_encode(context, max_seq_len=COGVIEW4_GLM_MAX_SEQ_LEN)
+        # Move embeddings to CPU for storage to save VRAM
+        glm_embeds = glm_embeds.detach().to("cpu")
+        conditioning_data = ConditioningFieldData(conditionings=[CogView4ConditioningInfo(glm_embeds=glm_embeds)])
+        conditioning_name = context.conditioning.save(conditioning_data)
+        return CogView4ConditioningOutput.build(conditioning_name)
+
+    def _glm_encode(self, context: InvocationContext, max_seq_len: int) -> torch.Tensor:
+        prompt = [self.prompt]
+
+        # TODO(ryand): Add model inputs to the invocation rather than hard-coding.
+        glm_text_encoder_info = context.models.load(self.glm_encoder.text_encoder)
+        with (
+            glm_text_encoder_info.model_on_device() as (_, glm_text_encoder),
+            context.models.load(self.glm_encoder.tokenizer).model_on_device() as (_, glm_tokenizer),
+        ):
+            repaired_tensors = glm_text_encoder_info.repair_required_tensors_on_device()
+            device = get_effective_device(glm_text_encoder)
+            if repaired_tensors > 0:
+                context.logger.warning(
+                    f"Recovered {repaired_tensors} required GLM tensor(s) onto {device} after a partial device mismatch."
+                )
+
+            context.util.signal_progress("Running GLM text encoder")
+            assert isinstance(glm_text_encoder, GlmModel)
+            assert isinstance(glm_tokenizer, PreTrainedTokenizerFast)
+
+            text_inputs = glm_tokenizer(
+                prompt,
+                padding="longest",
+                max_length=max_seq_len,
+                truncation=True,
+                add_special_tokens=True,
+                return_tensors="pt",
+            )
+            text_input_ids = text_inputs.input_ids
+            untruncated_ids = glm_tokenizer(prompt, padding="longest", return_tensors="pt").input_ids
+            assert isinstance(text_input_ids, torch.Tensor)
+            assert isinstance(untruncated_ids, torch.Tensor)
+            if untruncated_ids.shape[-1] >= text_input_ids.shape[-1] and not torch.equal(
+                text_input_ids, untruncated_ids
+            ):
+                removed_text = glm_tokenizer.batch_decode(untruncated_ids[:, max_seq_len - 1 : -1])
+                context.logger.warning(
+                    "The following part of your input was truncated because `max_sequence_length` is set to "
+                    f" {max_seq_len} tokens: {removed_text}"
+                )
+
+            current_length = text_input_ids.shape[1]
+            pad_length = (16 - (current_length % 16)) % 16
+            if pad_length > 0:
+                pad_ids = torch.full(
+                    (text_input_ids.shape[0], pad_length),
+                    fill_value=glm_tokenizer.pad_token_id,
+                    dtype=text_input_ids.dtype,
+                    device=text_input_ids.device,
+                )
+                text_input_ids = torch.cat([pad_ids, text_input_ids], dim=1)
+            prompt_embeds = glm_text_encoder(text_input_ids.to(device), output_hidden_states=True).hidden_states[-2]
+
+        assert isinstance(prompt_embeds, torch.Tensor)
+        return prompt_embeds