DarthAffe/stable-diffusion.cpp
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noise mask

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leejet 2025-12-24 00:26:49 +08:00
parent 3e30c9ab35
commit b3047e861f
1 changed files with 172 additions and 143 deletions
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315
z_image.hpp
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@ -288,8 +288,8 @@ namespace ZImage {
GGML_ASSERT(c_noisy != nullptr); GGML_ASSERT(c_noisy != nullptr);
GGML_ASSERT(c_clean != nullptr); GGML_ASSERT(c_clean != nullptr);
auto scale_noisy = adaLN_modulation_1->forward(ctx, c_noisy); // [N, hidden_size] auto scale_noisy = adaLN_modulation_1->forward(ctx, ggml_silu(ctx->ggml_ctx, c_noisy)); // [N, hidden_size]
auto scale_clean = adaLN_modulation_1->forward(ctx, c_clean); // [N, hidden_size] auto scale_clean = adaLN_modulation_1->forward(ctx, ggml_silu(ctx->ggml_ctx, c_clean)); // [N, hidden_size]
scale = select_per_token(ctx->ggml_ctx, noise_mask, scale_clean, scale_noisy); scale = select_per_token(ctx->ggml_ctx, noise_mask, scale_clean, scale_noisy);
@ -482,11 +482,32 @@ namespace ZImage {
return x; return x;
} }
struct ggml_tensor* forward_basic(GGMLRunnerContext* ctx, std::pair<ggml_tensor*, ggml_tensor*> _pad_and_gen_noise_mask(GGMLRunnerContext* ctx,
struct ggml_tensor* x, ggml_tensor* x,
struct ggml_tensor* timestep, ggml_tensor* pad_token,
struct ggml_tensor* context, int N,
struct ggml_tensor* pe) { float noise_mask_value = 1.f) {
int64_t n_pad_token = Rope::bound_mod(x->ne[1], SEQ_MULTI_OF);
if (n_pad_token > 0) {
auto pad_tokens = ggml_repeat_4d(ctx->ggml_ctx, pad_token, pad_token->ne[0], n_pad_token, N, 1);
x = ggml_concat(ctx->ggml_ctx, x, pad_tokens, 1); // [N, n_token + n_pad_token, hidden_size]
}
ggml_tensor* noise_mask = nullptr;
if (noise_mask_value == 0.f) {
noise_mask = ggml_ext_zeros(ctx->ggml_ctx, x->ne[1], 1, 1, 1);
} else if (noise_mask_value == 1.f) {
noise_mask = ggml_ext_ones(ctx->ggml_ctx, x->ne[1], 1, 1, 1);
}
return {x, noise_mask};
}
struct ggml_tensor* forward_omni(GGMLRunnerContext* ctx,
ggml_tensor* x,
ggml_tensor* timestep,
std::vector<ggml_tensor*> contexts,
ggml_tensor* pe,
std::vector<ggml_tensor*> ref_latents,
std::vector<ggml_tensor*> siglip_feats) {
auto x_embedder = std::dynamic_pointer_cast<Linear>(blocks["x_embedder"]); auto x_embedder = std::dynamic_pointer_cast<Linear>(blocks["x_embedder"]);
auto t_embedder = std::dynamic_pointer_cast<TimestepEmbedder>(blocks["t_embedder"]); auto t_embedder = std::dynamic_pointer_cast<TimestepEmbedder>(blocks["t_embedder"]);
auto cap_embedder_0 = std::dynamic_pointer_cast<RMSNorm>(blocks["cap_embedder.0"]); auto cap_embedder_0 = std::dynamic_pointer_cast<RMSNorm>(blocks["cap_embedder.0"]);
@ -497,147 +518,145 @@ namespace ZImage {
auto txt_pad_token = params["cap_pad_token"]; auto txt_pad_token = params["cap_pad_token"];
auto img_pad_token = params["x_pad_token"]; auto img_pad_token = params["x_pad_token"];
int64_t N = x->ne[2]; bool omni_mode = ref_latents.size() > 0;
int64_t n_img_token = x->ne[1];
int64_t n_txt_token = context->ne[1];
auto t_emb = t_embedder->forward(ctx, timestep);
auto txt = cap_embedder_1->forward(ctx, cap_embedder_0->forward(ctx, context)); // [N, n_txt_token, hidden_size]
auto img = x_embedder->forward(ctx, x); // [N, n_img_token, hidden_size]
int64_t n_txt_pad_token = Rope::bound_mod(n_txt_token, SEQ_MULTI_OF);
if (n_txt_pad_token > 0) {
auto txt_pad_tokens = ggml_repeat_4d(ctx->ggml_ctx, txt_pad_token, txt_pad_token->ne[0], n_txt_pad_token, N, 1);
txt = ggml_concat(ctx->ggml_ctx, txt, txt_pad_tokens, 1); // [N, n_txt_token + n_txt_pad_token, hidden_size]
}
int64_t n_img_pad_token = Rope::bound_mod(n_img_token, SEQ_MULTI_OF);
if (n_img_pad_token > 0) {
auto img_pad_tokens = ggml_repeat_4d(ctx->ggml_ctx, img_pad_token, img_pad_token->ne[0], n_img_pad_token, N, 1);
img = ggml_concat(ctx->ggml_ctx, img, img_pad_tokens, 1); // [N, n_img_token + n_img_pad_token, hidden_size]
}
GGML_ASSERT(txt->ne[1] + img->ne[1] == pe->ne[3]);
auto txt_pe = ggml_ext_slice(ctx->ggml_ctx, pe, 3, 0, txt->ne[1]);
auto img_pe = ggml_ext_slice(ctx->ggml_ctx, pe, 3, txt->ne[1], pe->ne[3]);
for (int i = 0; i < z_image_params.num_refiner_layers; i++) {
auto block = std::dynamic_pointer_cast<JointTransformerBlock>(blocks["context_refiner." + std::to_string(i)]);
txt = block->forward(ctx, txt, txt_pe, nullptr, nullptr);
}
for (int i = 0; i < z_image_params.num_refiner_layers; i++) {
auto block = std::dynamic_pointer_cast<JointTransformerBlock>(blocks["noise_refiner." + std::to_string(i)]);
img = block->forward(ctx, img, img_pe, nullptr, t_emb);
}
auto txt_img = ggml_concat(ctx->ggml_ctx, txt, img, 1); // [N, n_txt_token + n_txt_pad_token + n_img_token + n_img_pad_token, hidden_size]
for (int i = 0; i < z_image_params.num_layers; i++) {
auto block = std::dynamic_pointer_cast<JointTransformerBlock>(blocks["layers." + std::to_string(i)]);
txt_img = block->forward(ctx, txt_img, pe, nullptr, t_emb);
}
txt_img = final_layer->forward(ctx, txt_img, t_emb); // [N, n_txt_token + n_txt_pad_token + n_img_token + n_img_pad_token, ph*pw*C]
img = ggml_ext_slice(ctx->ggml_ctx, txt_img, 1, n_txt_token + n_txt_pad_token, n_txt_token + n_txt_pad_token + n_img_token); // [N, n_img_token, ph*pw*C]
return img;
}
struct ggml_tensor* forward_omni(GGMLRunnerContext* ctx,
ggml_tensor* x,
std::vector<ggml_tensor*> ref_latents,
std::vector<ggml_tensor*> contexts,
std::vector<ggml_tensor*> siglip_feats,
ggml_tensor* timestep,
ggml_tensor* noise_mask,
ggml_tensor* pe) {
auto x_embedder = std::dynamic_pointer_cast<Linear>(blocks["x_embedder"]);
auto t_embedder = std::dynamic_pointer_cast<TimestepEmbedder>(blocks["t_embedder"]);
auto cap_embedder_0 = std::dynamic_pointer_cast<RMSNorm>(blocks["cap_embedder.0"]);
auto cap_embedder_1 = std::dynamic_pointer_cast<Linear>(blocks["cap_embedder.1"]);
auto siglip_embedder_0 = std::dynamic_pointer_cast<RMSNorm>(blocks["siglip_embedder.0"]);
auto siglip_embedder_1 = std::dynamic_pointer_cast<Linear>(blocks["siglip_embedder.1"]);
auto norm_final = std::dynamic_pointer_cast<RMSNorm>(blocks["norm_final"]);
auto final_layer = std::dynamic_pointer_cast<FinalLayer>(blocks["final_layer"]);
auto txt_pad_token = params["cap_pad_token"];
auto img_pad_token = params["x_pad_token"];
auto sig_pad_token = params["siglip_pad_token"];
int64_t N = x->ne[2]; int64_t N = x->ne[2];
ggml_tensor* txt = nullptr; // noise mask of img: 0 for condition images (clean), 1 for target image (noisy)
for (ggml_tensor* context : contexts) { // noise mask of txg/sig: same as the corresponding img. If there is no corresponding img, set to 1
auto curr_txt = cap_embedder_1->forward(ctx, cap_embedder_0->forward(ctx, context)); // [N, n_txt_token, hidden_size]
int64_t n_txt_pad_token = Rope::bound_mod(curr_txt->ne[1], SEQ_MULTI_OF); ggml_tensor* txt = nullptr;
if (n_txt_pad_token > 0) { ggml_tensor* txt_noise_mask = nullptr;
auto txt_pad_tokens = ggml_repeat_4d(ctx->ggml_ctx, txt_pad_token, txt_pad_token->ne[0], n_txt_pad_token, N, 1); for (int i = 0; i < contexts.size(); i++) {
curr_txt = ggml_concat(ctx->ggml_ctx, curr_txt, txt_pad_tokens, 1); // [N, n_txt_token + n_txt_pad_token, hidden_size] auto curr_txt_raw = cap_embedder_1->forward(ctx, cap_embedder_0->forward(ctx, contexts[i])); // [N, n_txt_token, hidden_size]
float noise_mask_value = -1.f; // empty noise mask
if (omni_mode) {
noise_mask_value = (i < ref_latents.size() ? 0.f : 1.f);
} }
auto [curr_txt, curr_txt_noise_mask] = _pad_and_gen_noise_mask(ctx, curr_txt_raw, txt_pad_token, N, noise_mask_value);
if (txt == nullptr) { if (txt == nullptr) {
txt = curr_txt; txt = curr_txt;
} else { } else {
txt = ggml_concat(ctx->ggml_ctx, txt, curr_txt, 1); txt = ggml_concat(ctx->ggml_ctx, txt, curr_txt, 1);
} }
if (omni_mode) {
if (txt_noise_mask == nullptr) {
txt_noise_mask = curr_txt_noise_mask;
} else {
txt_noise_mask = ggml_concat(ctx->ggml_ctx, txt_noise_mask, curr_txt_noise_mask, 0);
}
}
} }
std::vector<ggml_tensor*> all_x = ref_latents; ggml_tensor* img = nullptr;
all_x.push_back(x); ggml_tensor* img_noise_mask = nullptr;
for (ggml_tensor* ref : ref_latents) {
auto curr_img_raw = x_embedder->forward(ctx, ref); // [N, n_img_token, hidden_size]
ggml_tensor* img = nullptr; float noise_mask_value = -1.f; // empty noise mask
int64_t final_img_offset = 0; if (omni_mode) {
int64_t final_img_pad_len = 0; noise_mask_value = 0.f;
for (ggml_tensor* orig_x : all_x) {
auto curr_img = x_embedder->forward(ctx, orig_x); // [N, n_img_token, hidden_size]
int64_t n_img_pad_token = Rope::bound_mod(curr_img->ne[1], SEQ_MULTI_OF);
if (n_img_pad_token > 0) {
auto img_pad_tokens = ggml_repeat_4d(ctx->ggml_ctx, img_pad_token, img_pad_token->ne[0], n_img_pad_token, N, 1);
curr_img = ggml_concat(ctx->ggml_ctx, curr_img, img_pad_tokens, 1); // [N, n_img_token + n_img_pad_token, hidden_size]
} }
auto [curr_img, curr_img_noise_mask] = _pad_and_gen_noise_mask(ctx, curr_img_raw, img_pad_token, N, noise_mask_value);
if (img == nullptr) { if (img == nullptr) {
img = curr_img; img = curr_img;
} else { } else {
final_img_offset = img->ne[1]; img = ggml_concat(ctx->ggml_ctx, img, curr_img, 1);
img = ggml_concat(ctx->ggml_ctx, img, curr_img, 1); }
if (omni_mode) {
if (img_noise_mask == nullptr) {
img_noise_mask = curr_img_noise_mask;
} else {
img_noise_mask = ggml_concat(ctx->ggml_ctx, img_noise_mask, curr_img_noise_mask, 0);
}
} }
final_img_pad_len = n_img_pad_token;
} }
ggml_tensor* sig = nullptr; int64_t final_img_offset = (img ? img->ne[1] : 0);
for (ggml_tensor* siglip_feat : siglip_feats) { int64_t final_img_pad_len = 0;
auto curr_sig = siglip_embedder_1->forward(ctx, siglip_embedder_0->forward(ctx, siglip_feat)); // [N, n_sig_token, hidden_size]
int64_t n_sig_pad_token = Rope::bound_mod(curr_sig->ne[1], SEQ_MULTI_OF); {
if (n_sig_pad_token > 0) { auto curr_img_raw = x_embedder->forward(ctx, x); // [N, n_img_token, hidden_size]
auto sig_pad_tokens = ggml_repeat_4d(ctx->ggml_ctx, sig_pad_token, sig_pad_token->ne[0], n_sig_pad_token, N, 1);
curr_sig = ggml_concat(ctx->ggml_ctx, curr_sig, sig_pad_tokens, 1); // [N, n_sig_token + n_sig_pad_token, hidden_size] float noise_mask_value = -1.f; // empty noise mask
if (omni_mode) {
noise_mask_value = 0.f;
} }
auto [curr_img, curr_img_noise_mask] = _pad_and_gen_noise_mask(ctx, curr_img_raw, img_pad_token, N, noise_mask_value);
if (img == nullptr) {
img = curr_img;
} else {
img = ggml_concat(ctx->ggml_ctx, img, curr_img, 1);
}
if (omni_mode) {
if (img_noise_mask == nullptr) {
img_noise_mask = curr_img_noise_mask;
} else {
img_noise_mask = ggml_concat(ctx->ggml_ctx, img_noise_mask, curr_img_noise_mask, 0);
}
}
final_img_pad_len = Rope::bound_mod(curr_img_raw->ne[1], SEQ_MULTI_OF);
}
ggml_tensor* sig = nullptr;
ggml_tensor* sig_noise_mask = nullptr;
for (int i = 0; i < siglip_feats.size(); i++) {
auto sig_pad_token = params["siglip_pad_token"];
auto siglip_embedder_0 = std::dynamic_pointer_cast<RMSNorm>(blocks["siglip_embedder.0"]);
auto siglip_embedder_1 = std::dynamic_pointer_cast<Linear>(blocks["siglip_embedder.1"]);
auto curr_sig_raw = siglip_embedder_1->forward(ctx, siglip_embedder_0->forward(ctx, siglip_feats[i])); // [N, n_sig_token, hidden_size]
float noise_mask_value = -1.f; // empty noise mask
if (omni_mode) {
noise_mask_value = (i < ref_latents.size() ? 0.f : 1.f);
}
auto [curr_sig, curr_sig_noise_mask] = _pad_and_gen_noise_mask(ctx, curr_sig_raw, sig_pad_token, N, noise_mask_value);
if (sig == nullptr) { if (sig == nullptr) {
sig = curr_sig; sig = curr_sig;
} else { } else {
sig = ggml_concat(ctx->ggml_ctx, sig, curr_sig, 1); sig = ggml_concat(ctx->ggml_ctx, sig, curr_sig, 1);
} }
if (omni_mode) {
if (sig_noise_mask == nullptr) {
sig_noise_mask = curr_sig_noise_mask;
} else {
sig_noise_mask = ggml_concat(ctx->ggml_ctx, sig_noise_mask, curr_sig_noise_mask, 0);
}
}
} }
auto t_noisy = t_embedder->forward(ctx, timestep); ggml_tensor* t_emb = nullptr;
auto t_clean = t_embedder->forward(ctx, ggml_tensor* t_noisy = nullptr;
ggml_scale(ctx->ggml_ctx, ggml_tensor* t_clean = nullptr;
ggml_ext_ones(ctx->ggml_ctx, timestep->ne[0], timestep->ne[1], timestep->ne[2], timestep->ne[3]), if (omni_mode) {
1000.f)); t_noisy = t_embedder->forward(ctx, timestep);
t_clean = t_embedder->forward(ctx,
ggml_scale(ctx->ggml_ctx,
ggml_ext_ones(ctx->ggml_ctx, timestep->ne[0], timestep->ne[1], timestep->ne[2], timestep->ne[3]),
0.f));
} else {
t_emb = t_embedder->forward(ctx, timestep);
}
GGML_ASSERT(txt->ne[1] + img->ne[1] + sig->ne[1] == pe->ne[3]); if (sig) {
GGML_ASSERT(txt->ne[1] + img->ne[1] + sig->ne[1] == pe->ne[3]);
} else {
GGML_ASSERT(txt->ne[1] + img->ne[1] == pe->ne[3]);
}
auto txt_pe = ggml_ext_slice(ctx->ggml_ctx, pe, 3, 0, txt->ne[1]); auto txt_pe = ggml_ext_slice(ctx->ggml_ctx, pe, 3, 0, txt->ne[1]);
auto img_pe = ggml_ext_slice(ctx->ggml_ctx, pe, 3, txt->ne[1], txt->ne[1] + img->ne[1]); auto img_pe = ggml_ext_slice(ctx->ggml_ctx, pe, 3, txt->ne[1], txt->ne[1] + img->ne[1]);
auto sig_pe = ggml_ext_slice(ctx->ggml_ctx, pe, 3, txt->ne[1] + img->ne[1], pe->ne[3]);
auto img_noise_mask = ggml_ext_slice(ctx->ggml_ctx, noise_mask, 0, txt->ne[1], txt->ne[1] + img->ne[1]);
for (int i = 0; i < z_image_params.num_refiner_layers; i++) { for (int i = 0; i < z_image_params.num_refiner_layers; i++) {
auto block = std::dynamic_pointer_cast<JointTransformerBlock>(blocks["context_refiner." + std::to_string(i)]); auto block = std::dynamic_pointer_cast<JointTransformerBlock>(blocks["context_refiner." + std::to_string(i)]);
@ -648,37 +667,50 @@ namespace ZImage {
for (int i = 0; i < z_image_params.num_refiner_layers; i++) { for (int i = 0; i < z_image_params.num_refiner_layers; i++) {
auto block = std::dynamic_pointer_cast<JointTransformerBlock>(blocks["noise_refiner." + std::to_string(i)]); auto block = std::dynamic_pointer_cast<JointTransformerBlock>(blocks["noise_refiner." + std::to_string(i)]);
img = block->forward(ctx, img, img_pe, nullptr, nullptr, img_noise_mask, t_noisy, t_clean); img = block->forward(ctx, img, img_pe, nullptr, t_emb, img_noise_mask, t_noisy, t_clean);
} }
for (int i = 0; i < z_image_params.num_refiner_layers; i++) { auto unified = ggml_concat(ctx->ggml_ctx, txt, img, 1); // [N, n_txt_token + n_img_token, hidden_size]
auto block = std::dynamic_pointer_cast<JointTransformerBlock>(blocks["siglip_refiner." + std::to_string(i)]);
sig = block->forward(ctx, sig, sig_pe, nullptr, nullptr); ggml_tensor* noise_mask = nullptr;
if (omni_mode) {
noise_mask = ggml_concat(ctx->ggml_ctx, txt_noise_mask, img_noise_mask, 0); // [N, n_txt_token + n_img_token]
} }
auto unified = ggml_concat(ctx->ggml_ctx, txt, img, 1); ggml_tensor* sig_pe = nullptr;
unified = ggml_concat(ctx->ggml_ctx, unified, sig, 1); // [N, n_txt_token + n_img_token + n_sig_token, hidden_size] if (sig) {
sig_pe = ggml_ext_slice(ctx->ggml_ctx, pe, 3, txt->ne[1] + img->ne[1], pe->ne[3]);
for (int i = 0; i < z_image_params.num_refiner_layers; i++) {
auto block = std::dynamic_pointer_cast<JointTransformerBlock>(blocks["siglip_refiner." + std::to_string(i)]);
sig = block->forward(ctx, sig, sig_pe, nullptr, nullptr);
}
unified = ggml_concat(ctx->ggml_ctx, unified, sig, 1); // [N, n_txt_token + n_img_token + n_sig_token, hidden_size]
noise_mask = ggml_concat(ctx->ggml_ctx, noise_mask, sig_noise_mask, 0); // [N, n_txt_token + n_img_token + n_sig_token]
}
for (int i = 0; i < z_image_params.num_layers; i++) { for (int i = 0; i < z_image_params.num_layers; i++) {
auto block = std::dynamic_pointer_cast<JointTransformerBlock>(blocks["layers." + std::to_string(i)]); auto block = std::dynamic_pointer_cast<JointTransformerBlock>(blocks["layers." + std::to_string(i)]);
unified = block->forward(ctx, unified, pe, nullptr, noise_mask, t_noisy, t_clean); unified = block->forward(ctx, unified, pe, nullptr, t_emb, noise_mask, t_noisy, t_clean);
} }
unified = final_layer->forward(ctx, unified, noise_mask, t_noisy, t_clean); // [N, n_txt_token + n_img_token + n_sig_token, ph*pw*C] unified = final_layer->forward(ctx, unified, t_emb, noise_mask, t_noisy, t_clean); // [N, n_txt_token + n_img_token + n_sig_token, ph*pw*C]
img = ggml_ext_slice(ctx->ggml_ctx, unified, 1, txt->ne[1] + final_img_offset, img->ne[1] - final_img_pad_len); // [N, n_final_img_token, ph*pw*C] img = ggml_ext_slice(ctx->ggml_ctx, unified, 1, txt->ne[1] + final_img_offset, txt->ne[1] + img->ne[1] - final_img_pad_len); // [N, n_final_img_token, ph*pw*C]
return img; return img;
} }
struct ggml_tensor* forward(GGMLRunnerContext* ctx, struct ggml_tensor* forward(GGMLRunnerContext* ctx,
struct ggml_tensor* x, ggml_tensor* x,
struct ggml_tensor* timestep, ggml_tensor* timestep,
struct ggml_tensor* context, std::vector<ggml_tensor*> contexts,
struct ggml_tensor* pe, ggml_tensor* pe,
std::vector<ggml_tensor*> ref_latents = {}) { std::vector<ggml_tensor*> ref_latents = {},
std::vector<ggml_tensor*> siglip_feats = {}) {
// Forward pass of DiT. // Forward pass of DiT.
// x: [N, C, H, W] // x: [N, C, H, W]
// timestep: [N,] // timestep: [N,]
@ -691,22 +723,19 @@ namespace ZImage {
int64_t C = x->ne[2]; int64_t C = x->ne[2];
int64_t N = x->ne[3]; int64_t N = x->ne[3];
auto img = process_img(ctx, x); auto img = process_img(ctx, x);
uint64_t n_img_token = img->ne[1];
if (ref_latents.size() > 0) {
for (ggml_tensor* ref : ref_latents) {
ref = process_img(ctx, ref);
img = ggml_concat(ctx->ggml_ctx, img, ref, 1);
}
}
int64_t h_len = ((H + (z_image_params.patch_size / 2)) / z_image_params.patch_size); int64_t h_len = ((H + (z_image_params.patch_size / 2)) / z_image_params.patch_size);
int64_t w_len = ((W + (z_image_params.patch_size / 2)) / z_image_params.patch_size); int64_t w_len = ((W + (z_image_params.patch_size / 2)) / z_image_params.patch_size);
auto out = forward_basic(ctx, img, timestep, context, pe); for (int i = 0; i < ref_latents.size(); i++) {
ref_latents[i] = process_img(ctx, ref_latents[i]);
}
auto out = forward_omni(ctx, img, timestep, contexts, pe, ref_latents, siglip_feats); // [N, n_img_token, ph*pw*C]
// auto out = forward_basic(ctx, img, timestep, contexts[0], pe); // [N, n_img_token, ph*pw*C]
// out = ggml_ext_slice(ctx->ggml_ctx, out, 1, 0, n_img_token); // [N, n_img_token, ph*pw*C]
out = unpatchify(ctx->ggml_ctx, out, h_len, w_len); // [N, C, H + pad_h, W + pad_w] out = unpatchify(ctx->ggml_ctx, out, h_len, w_len); // [N, C, H + pad_h, W + pad_w]
// slice // slice
@ -785,7 +814,7 @@ namespace ZImage {
struct ggml_tensor* out = z_image.forward(&runner_ctx, struct ggml_tensor* out = z_image.forward(&runner_ctx,
x, x,
timesteps, timesteps,
context, {context},
pe, pe,
ref_latents); ref_latents);