diff --git a/VAE/conf.py b/VAE/conf.py index 535d720..ee4b256 100644 --- a/VAE/conf.py +++ b/VAE/conf.py @@ -126,5 +126,20 @@ vae_conf = { "num_res_blocks" : 2, "attn_resolutions" : [], "video_kernel_size": [3, 1, 1] - } + }, + # Kandinsky-3 + "MoVQ3": { + "type" : "MoVQ3", + "embed_scale" : 8, + "embed_dim" : 4, + "double_z" : False, + "z_channels" : 4, + "resolution" : 256, + "in_channels" : 3, + "out_ch" : 3, + "ch" : 256, + "ch_mult" : [1, 2, 2, 4], + "num_res_blocks" : 2, + "attn_resolutions" : [32], + } } diff --git a/VAE/loader.py b/VAE/loader.py index ccd4fb2..88de4a8 100644 --- a/VAE/loader.py +++ b/VAE/loader.py @@ -29,6 +29,9 @@ class EXVAE(comfy.sd.VAE): from .models.consistencydecoder import ConsistencyDecoder model = ConsistencyDecoder() sd = {f"model.{k}":v for k,v in sd.items()} + elif model_conf["type"] == "MoVQ3": + from .models.movq3 import MoVQ + model = MoVQ(model_conf) else: raise NotImplementedError(f"Unknown VAE type '{model_conf['type']}'") diff --git a/VAE/models/LICENSE-Kandinsky-3 b/VAE/models/LICENSE-Kandinsky-3 new file mode 100644 index 0000000..261eeb9 --- /dev/null +++ b/VAE/models/LICENSE-Kandinsky-3 @@ -0,0 +1,201 @@ + Apache License + Version 2.0, January 2004 + http://www.apache.org/licenses/ + + TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION + + 1. 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We also recommend that a + file or class name and description of purpose be included on the + same "printed page" as the copyright notice for easier + identification within third-party archives. + + Copyright [yyyy] [name of copyright owner] + + Licensed under the Apache License, Version 2.0 (the "License"); + you may not use this file except in compliance with the License. + You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 + + Unless required by applicable law or agreed to in writing, software + distributed under the License is distributed on an "AS IS" BASIS, + WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + See the License for the specific language governing permissions and + limitations under the License. diff --git a/VAE/models/movq3.py b/VAE/models/movq3.py new file mode 100644 index 0000000..31e9214 --- /dev/null +++ b/VAE/models/movq3.py @@ -0,0 +1,418 @@ +import math +import torch +import torch.nn as nn +import numpy as np +import torch.nn.functional as F + + +def nonlinearity(x): + return x*torch.sigmoid(x) + + +class SpatialNorm(nn.Module): + def __init__( + self, f_channels, zq_channels=None, norm_layer=nn.GroupNorm, freeze_norm_layer=False, add_conv=False, **norm_layer_params + ): + super().__init__() + self.norm_layer = norm_layer(num_channels=f_channels, **norm_layer_params) + if zq_channels is not None: + if freeze_norm_layer: + for p in self.norm_layer.parameters: + p.requires_grad = False + self.add_conv = add_conv + if self.add_conv: + self.conv = nn.Conv2d(zq_channels, zq_channels, kernel_size=3, stride=1, padding=1) + self.conv_y = nn.Conv2d(zq_channels, f_channels, kernel_size=1, stride=1, padding=0) + self.conv_b = nn.Conv2d(zq_channels, f_channels, kernel_size=1, stride=1, padding=0) + def forward(self, f, zq=None): + norm_f = self.norm_layer(f) + if zq is not None: + f_size = f.shape[-2:] + zq = torch.nn.functional.interpolate(zq.float(), size=f_size, mode="nearest").to(zq.dtype) + if self.add_conv: + zq = self.conv(zq) + norm_f = norm_f * self.conv_y(zq) + self.conv_b(zq) + return norm_f + + +def Normalize(in_channels, zq_ch=None, add_conv=None): + return SpatialNorm( + in_channels, zq_ch, norm_layer=nn.GroupNorm, + freeze_norm_layer=False, add_conv=add_conv, num_groups=32, eps=1e-6, affine=True + ) + + +class Upsample(nn.Module): + def __init__(self, in_channels, with_conv): + super().__init__() + self.with_conv = with_conv + if self.with_conv: + self.conv = torch.nn.Conv2d(in_channels, + in_channels, + kernel_size=3, + stride=1, + padding=1) + + def forward(self, x): + x = torch.nn.functional.interpolate(x.float(), scale_factor=2.0, mode="nearest").to(x.dtype) + if self.with_conv: + x = self.conv(x) + return x + + +class Downsample(nn.Module): + def __init__(self, in_channels, with_conv): + super().__init__() + self.with_conv = with_conv + if self.with_conv: + self.conv = torch.nn.Conv2d(in_channels, + in_channels, + kernel_size=3, + stride=2, + padding=0) + + def forward(self, x): + if self.with_conv: + pad = (0,1,0,1) + x = torch.nn.functional.pad(x, pad, mode="constant", value=0) + x = self.conv(x) + else: + x = torch.nn.functional.avg_pool2d(x, kernel_size=2, stride=2) + return x + + +class ResnetBlock(nn.Module): + def __init__(self, *, in_channels, out_channels=None, conv_shortcut=False, + dropout, temb_channels=512, zq_ch=None, add_conv=False): + super().__init__() + self.in_channels = in_channels + out_channels = in_channels if out_channels is None else out_channels + self.out_channels = out_channels + self.use_conv_shortcut = conv_shortcut + + self.norm1 = Normalize(in_channels, zq_ch, add_conv=add_conv) + self.conv1 = torch.nn.Conv2d(in_channels, + out_channels, + kernel_size=3, + stride=1, + padding=1) + if temb_channels > 0: + self.temb_proj = torch.nn.Linear(temb_channels, + out_channels) + self.norm2 = Normalize(out_channels, zq_ch, add_conv=add_conv) + self.dropout = torch.nn.Dropout(dropout) + self.conv2 = torch.nn.Conv2d(out_channels, + out_channels, + kernel_size=3, + stride=1, + padding=1) + if self.in_channels != self.out_channels: + if self.use_conv_shortcut: + self.conv_shortcut = torch.nn.Conv2d(in_channels, + out_channels, + kernel_size=3, + stride=1, + padding=1) + else: + self.nin_shortcut = torch.nn.Conv2d(in_channels, + out_channels, + kernel_size=1, + stride=1, + padding=0) + + def forward(self, x, temb, zq=None): + h = x + h = self.norm1(h, zq) + h = nonlinearity(h) + h = self.conv1(h) + + if temb is not None: + h = h + self.temb_proj(nonlinearity(temb))[:,:,None,None] + + h = self.norm2(h, zq) + h = nonlinearity(h) + h = self.dropout(h) + h = self.conv2(h) + + if self.in_channels != self.out_channels: + if self.use_conv_shortcut: + x = self.conv_shortcut(x) + else: + x = self.nin_shortcut(x) + + return x+h + + +class AttnBlock(nn.Module): + def __init__(self, in_channels, zq_ch=None, add_conv=False): + super().__init__() + self.in_channels = in_channels + + self.norm = Normalize(in_channels, zq_ch, add_conv=add_conv) + self.q = torch.nn.Conv2d(in_channels, + in_channels, + kernel_size=1, + stride=1, + padding=0) + self.k = torch.nn.Conv2d(in_channels, + in_channels, + kernel_size=1, + stride=1, + padding=0) + self.v = torch.nn.Conv2d(in_channels, + in_channels, + kernel_size=1, + stride=1, + padding=0) + self.proj_out = torch.nn.Conv2d(in_channels, + in_channels, + kernel_size=1, + stride=1, + padding=0) + + + def forward(self, x, zq=None): + h_ = x + h_ = self.norm(h_, zq) + q = self.q(h_) + k = self.k(h_) + v = self.v(h_) + + # compute attention + b,c,h,w = q.shape + q = q.reshape(b,c,h*w) + q = q.permute(0,2,1) # b,hw,c + k = k.reshape(b,c,h*w) # b,c,hw + w_ = torch.bmm(q,k) # b,hw,hw w[b,i,j]=sum_c q[b,i,c]k[b,c,j] + w_ = w_ * (int(c)**(-0.5)) + w_ = torch.nn.functional.softmax(w_, dim=2) + + # attend to values + v = v.reshape(b,c,h*w) + w_ = w_.permute(0,2,1) # b,hw,hw (first hw of k, second of q) + h_ = torch.bmm(v,w_) # b, c,hw (hw of q) h_[b,c,j] = sum_i v[b,c,i] w_[b,i,j] + h_ = h_.reshape(b,c,h,w) + + h_ = self.proj_out(h_) + + return x+h_ + + +class Encoder(nn.Module): + def __init__(self, *, ch, out_ch, ch_mult=(1,2,4,8), num_res_blocks, + attn_resolutions, dropout=0.0, resamp_with_conv=True, in_channels, + resolution, z_channels, double_z=True, **ignore_kwargs): + super().__init__() + self.ch = ch + self.temb_ch = 0 + self.num_resolutions = len(ch_mult) + self.num_res_blocks = num_res_blocks + self.resolution = resolution + self.in_channels = in_channels + + # downsampling + self.conv_in = torch.nn.Conv2d(in_channels, + self.ch, + kernel_size=3, + stride=1, + padding=1) + + curr_res = resolution + in_ch_mult = (1,)+tuple(ch_mult) + self.down = nn.ModuleList() + for i_level in range(self.num_resolutions): + block = nn.ModuleList() + attn = nn.ModuleList() + block_in = ch*in_ch_mult[i_level] + block_out = ch*ch_mult[i_level] + for i_block in range(self.num_res_blocks): + block.append(ResnetBlock(in_channels=block_in, + out_channels=block_out, + temb_channels=self.temb_ch, + dropout=dropout)) + block_in = block_out + if curr_res in attn_resolutions: + attn.append(AttnBlock(block_in)) + down = nn.Module() + down.block = block + down.attn = attn + if i_level != self.num_resolutions-1: + down.downsample = Downsample(block_in, resamp_with_conv) + curr_res = curr_res // 2 + self.down.append(down) + + # middle + self.mid = nn.Module() + self.mid.block_1 = ResnetBlock(in_channels=block_in, + out_channels=block_in, + temb_channels=self.temb_ch, + dropout=dropout) + self.mid.attn_1 = AttnBlock(block_in) + self.mid.block_2 = ResnetBlock(in_channels=block_in, + out_channels=block_in, + temb_channels=self.temb_ch, + dropout=dropout) + + # end + self.norm_out = Normalize(block_in) + self.conv_out = torch.nn.Conv2d(block_in, + 2*z_channels if double_z else z_channels, + kernel_size=3, + stride=1, + padding=1) + + + def forward(self, x): + temb = None + + # downsampling + hs = [self.conv_in(x)] + for i_level in range(self.num_resolutions): + for i_block in range(self.num_res_blocks): + h = self.down[i_level].block[i_block](hs[-1], temb) + if len(self.down[i_level].attn) > 0: + h = self.down[i_level].attn[i_block](h) + hs.append(h) + if i_level != self.num_resolutions-1: + hs.append(self.down[i_level].downsample(hs[-1])) + + # middle + h = hs[-1] + h = self.mid.block_1(h, temb) + h = self.mid.attn_1(h) + h = self.mid.block_2(h, temb) + + # end + h = self.norm_out(h) + h = nonlinearity(h) + h = self.conv_out(h) + return h + + +class Decoder(nn.Module): + def __init__(self, *, ch, out_ch, ch_mult=(1,2,4,8), num_res_blocks, + attn_resolutions, dropout=0.0, resamp_with_conv=True, in_channels, + resolution, z_channels, give_pre_end=False, zq_ch=None, add_conv=False, **ignorekwargs): + super().__init__() + self.ch = ch + self.temb_ch = 0 + self.num_resolutions = len(ch_mult) + self.num_res_blocks = num_res_blocks + self.resolution = resolution + self.in_channels = in_channels + self.give_pre_end = give_pre_end + + # compute in_ch_mult, block_in and curr_res at lowest res + in_ch_mult = (1,)+tuple(ch_mult) + block_in = ch*ch_mult[self.num_resolutions-1] + curr_res = resolution // 2**(self.num_resolutions-1) + self.z_shape = (1,z_channels,curr_res,curr_res) + + # z to block_in + self.conv_in = torch.nn.Conv2d(z_channels, + block_in, + kernel_size=3, + stride=1, + padding=1) + + # middle + self.mid = nn.Module() + self.mid.block_1 = ResnetBlock(in_channels=block_in, + out_channels=block_in, + temb_channels=self.temb_ch, + dropout=dropout, + zq_ch=zq_ch, + add_conv=add_conv) + self.mid.attn_1 = AttnBlock(block_in, zq_ch, add_conv=add_conv) + self.mid.block_2 = ResnetBlock(in_channels=block_in, + out_channels=block_in, + temb_channels=self.temb_ch, + dropout=dropout, + zq_ch=zq_ch, + add_conv=add_conv) + + # upsampling + self.up = nn.ModuleList() + for i_level in reversed(range(self.num_resolutions)): + block = nn.ModuleList() + attn = nn.ModuleList() + block_out = ch*ch_mult[i_level] + for i_block in range(self.num_res_blocks+1): + block.append(ResnetBlock(in_channels=block_in, + out_channels=block_out, + temb_channels=self.temb_ch, + dropout=dropout, + zq_ch=zq_ch, + add_conv=add_conv)) + block_in = block_out + if curr_res in attn_resolutions: + attn.append(AttnBlock(block_in, zq_ch, add_conv=add_conv)) + up = nn.Module() + up.block = block + up.attn = attn + if i_level != 0: + up.upsample = Upsample(block_in, resamp_with_conv) + curr_res = curr_res * 2 + self.up.insert(0, up) # prepend to get consistent order + + # end + self.norm_out = Normalize(block_in, zq_ch, add_conv=add_conv) + self.conv_out = torch.nn.Conv2d(block_in, + out_ch, + kernel_size=3, + stride=1, + padding=1) + + def forward(self, z, zq): + #assert z.shape[1:] == self.z_shape[1:] + self.last_z_shape = z.shape + + # timestep embedding + temb = None + + # z to block_in + h = self.conv_in(z) + + # middle + h = self.mid.block_1(h, temb, zq) + h = self.mid.attn_1(h, zq) + h = self.mid.block_2(h, temb, zq) + + # upsampling + for i_level in reversed(range(self.num_resolutions)): + for i_block in range(self.num_res_blocks+1): + h = self.up[i_level].block[i_block](h, temb, zq) + if len(self.up[i_level].attn) > 0: + h = self.up[i_level].attn[i_block](h, zq) + if i_level != 0: + h = self.up[i_level].upsample(h) + + # end + if self.give_pre_end: + return h + + h = self.norm_out(h, zq) + h = nonlinearity(h) + h = self.conv_out(h) + return h + +class MoVQ(nn.Module): + def __init__(self, generator_params): + super().__init__() + z_channels = generator_params["z_channels"] + self.encoder = Encoder(**generator_params) + self.quant_conv = torch.nn.Conv2d(z_channels, z_channels, 1) + self.post_quant_conv = torch.nn.Conv2d(z_channels, z_channels, 1) + self.decoder = Decoder(zq_ch=z_channels, **generator_params) + + @torch.no_grad() + def encode(self, x): + h = self.encoder(x) + h = self.quant_conv(h) + return h + + @torch.no_grad() + def decode(self, quant): + decoder_input = self.post_quant_conv(quant) + decoded = self.decoder(decoder_input, quant) + return decoded