DarthAffe/stable-diffusion.cpp
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feat: add graph cut markers for LTXAV transformer (#1534)

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leejet 2026-05-20 23:22:10 +08:00 committed by GitHub
parent b3374e6a71
commit ef92a0027e
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3 changed files with 9 additions and 5 deletions
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5
src/ltxv.hpp
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@ -1487,6 +1487,9 @@ namespace LTXV {
->forward(ctx, ggml_ext_scale(ctx->ggml_ctx, av_ca_audio_timestep, av_ca_factor))
.first;
sd::ggml_graph_cut::mark_graph_cut(vx, "ltxav.prelude", "vx");
sd::ggml_graph_cut::mark_graph_cut(ax, "ltxav.prelude", "ax");
for (int i = 0; i < cfg.num_layers; i++) {
auto block = std::dynamic_pointer_cast<BasicAVTransformerBlock>(blocks["transformer_blocks." + std::to_string(i)]);
auto out = block->forward(ctx,
@ -1509,6 +1512,8 @@ namespace LTXV {
a_prompt_timestep_mod);
vx = out.first;
ax = out.second;
sd::ggml_graph_cut::mark_graph_cut(vx, "ltxav.transformer_blocks." + std::to_string(i), "vx");
sd::ggml_graph_cut::mark_graph_cut(ax, "ltxav.transformer_blocks." + std::to_string(i), "ax");
}
auto v_shift_scale = get_output_scale_shift(ctx, params["scale_shift_table"], v_embedded_time, cfg.hidden_size);

3
src/stable-diffusion.cpp
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@ -681,8 +681,7 @@ public:
if (sd_version_is_wan(version) ||
sd_version_is_qwen_image(version) ||
sd_version_is_anima(version) ||
sd_version_is_ltxav(version)
) {
sd_version_is_ltxav(version)) {
return std::make_shared<TinyVideoAutoEncoder>(backend_for(SDBackendModule::VAE),
params_backend_for(SDBackendModule::VAE),
tensor_storage_map,

4
src/tae.hpp
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@ -325,7 +325,7 @@ public:
int t_downscale = 1;
TinyVideoEncoder(int z_channels = 4, int patch_size = 1, std::vector<bool> time_downscale = {true, true, false})
: z_channels(z_channels), patch_size(patch_size) {
// self.t_downscale = 2**sum(t.stride == 2 for t in self.encoder if isinstance(t, TPool))
// self.t_downscale = 2**sum(t.stride == 2 for t in self.encoder if isinstance(t, TPool))
t_downscale = 1;
for (bool downscale : time_downscale) {
if (downscale) {
@ -383,7 +383,7 @@ class TinyVideoDecoder : public UnaryBlock {
static const int num_layers = 3;
int channels[num_layers + 1] = {256, 128, 64, 64};
int patch_size = 1;
int t_upscale = 1;
int t_upscale = 1;
public:
TinyVideoDecoder(int z_channels = 4, int patch_size = 1, std::vector<bool> time_upscale = {false, true, true})