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feat(stablediffusion-ggml): support Ideogram4 unconditional diffusion model

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Bump stable-diffusion.cpp from 1f9ee88 to b9254dd, the upstream commit that
adds Ideogram4 support (leejet/stable-diffusion.cpp#1609). Ideogram4 derives
its classifier-free guidance from a separate unconditional diffusion model,
exposed upstream through the new sd_ctx_params_t.uncond_diffusion_model_path
field.

Wire that field into the gosd wrapper via a new uncond_diffusion_model_path
option. The _path suffix is deliberate: the Go loader only resolves options
whose name contains "path" to an absolute path under the model directory, so
this keeps the option consistent with diffusion_model_path and
high_noise_diffusion_model_path.

Signed-off-by: Ettore Di Giacinto <mudler@localai.io>
Assisted-by: Claude:claude-opus-4-8 [Claude Code]
This commit is contained in:
Ettore Di Giacinto
2026-06-06 13:43:17 +00:00
parent 03c84cff28
commit 6479bd4253
2 changed files with 4 additions and 1 deletions
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2
backend/go/stablediffusion-ggml/Makefile
View File

@@ -8,7 +8,7 @@ JOBS?=$(shell nproc --ignore=1)
# stablediffusion.cpp (ggml)
STABLEDIFFUSION_GGML_REPO?=https://github.com/leejet/stable-diffusion.cpp
STABLEDIFFUSION_GGML_VERSION?=1f9ee88e09c258053fa59d5e05e23dfb10fa0b13
STABLEDIFFUSION_GGML_VERSION?=b9254dda0d10b91ee6f17fb7f4420097dd29824b
CMAKE_ARGS+=-DGGML_MAX_NAME=128

3
backend/go/stablediffusion-ggml/cpp/gosd.cpp
View File

@@ -386,6 +386,7 @@ int load_model(const char *model, char *model_path, char* options[], int threads
const char *llm_vision_path = "";
const char *diffusion_model_path = stableDiffusionModel;
const char *high_noise_diffusion_model_path = "";
const char *uncond_diffusion_model_path = "";
const char *taesd_path = "";
const char *control_net_path = "";
const char *embedding_dir = "";
@@ -472,6 +473,7 @@ int load_model(const char *model, char *model_path, char* options[], int threads
if (!strcmp(optname, "llm_vision_path")) llm_vision_path = strdup(optval);
if (!strcmp(optname, "diffusion_model_path")) diffusion_model_path = strdup(optval);
if (!strcmp(optname, "high_noise_diffusion_model_path")) high_noise_diffusion_model_path = strdup(optval);
if (!strcmp(optname, "uncond_diffusion_model_path")) uncond_diffusion_model_path = strdup(optval);
if (!strcmp(optname, "taesd_path")) taesd_path = strdup(optval);
if (!strcmp(optname, "control_net_path")) control_net_path = strdup(optval);
if (!strcmp(optname, "embedding_dir")) {
@@ -571,6 +573,7 @@ int load_model(const char *model, char *model_path, char* options[], int threads
ctx_params.llm_vision_path = llm_vision_path;
ctx_params.diffusion_model_path = diffusion_model_path;
ctx_params.high_noise_diffusion_model_path = high_noise_diffusion_model_path;
ctx_params.uncond_diffusion_model_path = uncond_diffusion_model_path;
ctx_params.vae_path = vae_path;
ctx_params.audio_vae_path = audio_vae_path;
ctx_params.embeddings_connectors_path = embeddings_connectors_path;