59 lines
2.4 KiB
Python
59 lines
2.4 KiB
Python
import torch
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import nodes
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import comfy.utils
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def camera_embeddings(elevation, azimuth):
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elevation = torch.as_tensor([elevation])
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azimuth = torch.as_tensor([azimuth])
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embeddings = torch.stack(
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[
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torch.deg2rad(
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(90 - elevation) - (90)
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), # Zero123 polar is 90-elevation
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torch.sin(torch.deg2rad(azimuth)),
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torch.cos(torch.deg2rad(azimuth)),
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torch.deg2rad(
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90 - torch.full_like(elevation, 0)
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),
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], dim=-1).unsqueeze(1)
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return embeddings
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class StableZero123_Conditioning:
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@classmethod
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def INPUT_TYPES(s):
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return {"required": { "clip_vision": ("CLIP_VISION",),
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"init_image": ("IMAGE",),
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"vae": ("VAE",),
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"width": ("INT", {"default": 256, "min": 16, "max": nodes.MAX_RESOLUTION, "step": 8}),
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"height": ("INT", {"default": 256, "min": 16, "max": nodes.MAX_RESOLUTION, "step": 8}),
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"batch_size": ("INT", {"default": 1, "min": 1, "max": 4096}),
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"elevation": ("FLOAT", {"default": 0.0, "min": -180.0, "max": 180.0}),
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"azimuth": ("FLOAT", {"default": 0.0, "min": -180.0, "max": 180.0}),
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}}
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RETURN_TYPES = ("CONDITIONING", "CONDITIONING", "LATENT")
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RETURN_NAMES = ("positive", "negative", "latent")
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FUNCTION = "encode"
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CATEGORY = "conditioning/3d_models"
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def encode(self, clip_vision, init_image, vae, width, height, batch_size, elevation, azimuth):
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output = clip_vision.encode_image(init_image)
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pooled = output.image_embeds.unsqueeze(0)
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pixels = comfy.utils.common_upscale(init_image.movedim(-1,1), width, height, "bilinear", "center").movedim(1,-1)
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encode_pixels = pixels[:,:,:,:3]
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t = vae.encode(encode_pixels)
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cam_embeds = camera_embeddings(elevation, azimuth)
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cond = torch.cat([pooled, cam_embeds.repeat((pooled.shape[0], 1, 1))], dim=-1)
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positive = [[cond, {"concat_latent_image": t}]]
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negative = [[torch.zeros_like(pooled), {"concat_latent_image": torch.zeros_like(t)}]]
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latent = torch.zeros([batch_size, 4, height // 8, width // 8])
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return (positive, negative, {"samples":latent})
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NODE_CLASS_MAPPINGS = {
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"StableZero123_Conditioning": StableZero123_Conditioning,
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}
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