DarthAffe/stable-diffusion.cpp
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refector: reuse some code

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leejet 2025-07-01 23:33:50 +08:00
parent 9251756086
commit 7dac89ad75
4 changed files with 32 additions and 38 deletions
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2
common.hpp
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@ -57,7 +57,7 @@ public:
auto conv = std::dynamic_pointer_cast<Conv2d>(blocks["conv"]);
x = ggml_upscale(ctx, x, 2, GGML_SCALE_MODE_NEAREST); // [N, channels, h*2, w*2]
x = conv->forward(ctx, x); // [N, out_channels, h*2, w*2]
x = conv->forward(ctx, x); // [N, out_channels, h*2, w*2]
return x;
}
};

5
denoiser.hpp
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@ -347,12 +347,13 @@ struct EDMVDenoiser : public CompVisVDenoiser {
float min_sigma = 0.002;
float max_sigma = 120.0;
EDMVDenoiser(float min_sigma = 0.002, float max_sigma = 120.0) : min_sigma(min_sigma), max_sigma(max_sigma) {
EDMVDenoiser(float min_sigma = 0.002, float max_sigma = 120.0)
: min_sigma(min_sigma), max_sigma(max_sigma) {
schedule = std::make_shared<ExponentialSchedule>();
}
float t_to_sigma(float t) {
return std::exp(t * 4/(float)TIMESTEPS);
return std::exp(t * 4 / (float)TIMESTEPS);
}
float sigma_to_t(float s) {

2
ggml_extend.hpp
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@ -118,7 +118,7 @@ __STATIC_INLINE__ struct ggml_tensor* ggml_kronecker(ggml_context* ctx, struct g
a->ne[1] * b->ne[1],
a->ne[2] * b->ne[2],
a->ne[3] * b->ne[3],
GGML_SCALE_MODE_NEAREST),
GGML_SCALE_MODE_NEAREST),
b);
}

61
stable-diffusion.cpp
View File

@ -1566,6 +1566,29 @@ sd_image_t* generate_image(sd_ctx_t* sd_ctx,
return result_images;
}
ggml_tensor* generate_init_latent(sd_ctx_t* sd_ctx,
ggml_context* work_ctx,
int width,
int height) {
int C = 4;
if (sd_version_is_sd3(sd_ctx->sd->version)) {
C = 16;
} else if (sd_version_is_flux(sd_ctx->sd->version)) {
C = 16;
}
int W = width / 8;
int H = height / 8;
ggml_tensor* init_latent = ggml_new_tensor_4d(work_ctx, GGML_TYPE_F32, W, H, C, 1);
if (sd_version_is_sd3(sd_ctx->sd->version)) {
ggml_set_f32(init_latent, 0.0609f);
} else if (sd_version_is_flux(sd_ctx->sd->version)) {
ggml_set_f32(init_latent, 0.1159f);
} else {
ggml_set_f32(init_latent, 0.f);
}
return init_latent;
}
sd_image_t* txt2img(sd_ctx_t* sd_ctx,
const char* prompt_c_str,
const char* negative_prompt_c_str,
@ -1622,27 +1645,12 @@ sd_image_t* txt2img(sd_ctx_t* sd_ctx,
std::vector<float> sigmas = sd_ctx->sd->denoiser->get_sigmas(sample_steps);
int C = 4;
if (sd_version_is_sd3(sd_ctx->sd->version)) {
C = 16;
} else if (sd_version_is_flux(sd_ctx->sd->version)) {
C = 16;
}
int W = width / 8;
int H = height / 8;
ggml_tensor* init_latent = ggml_new_tensor_4d(work_ctx, GGML_TYPE_F32, W, H, C, 1);
if (sd_version_is_sd3(sd_ctx->sd->version)) {
ggml_set_f32(init_latent, 0.0609f);
} else if (sd_version_is_flux(sd_ctx->sd->version)) {
ggml_set_f32(init_latent, 0.1159f);
} else {
ggml_set_f32(init_latent, 0.f);
}
if (sd_version_is_inpaint(sd_ctx->sd->version)) {
LOG_WARN("This is an inpainting model, this should only be used in img2img mode with a mask");
}
ggml_tensor* init_latent = generate_init_latent(sd_ctx, work_ctx, width, height);
sd_image_t* result_images = generate_image(sd_ctx,
work_ctx,
init_latent,
@ -2046,23 +2054,6 @@ sd_image_t* edit(sd_ctx_t* sd_ctx,
}
sd_ctx->sd->rng->manual_seed(seed);
int C = 4;
if (sd_version_is_sd3(sd_ctx->sd->version)) {
C = 16;
} else if (sd_version_is_flux(sd_ctx->sd->version)) {
C = 16;
}
int W = width / 8;
int H = height / 8;
ggml_tensor* init_latent = ggml_new_tensor_4d(work_ctx, GGML_TYPE_F32, W, H, C, 1);
if (sd_version_is_sd3(sd_ctx->sd->version)) {
ggml_set_f32(init_latent, 0.0609f);
} else if (sd_version_is_flux(sd_ctx->sd->version)) {
ggml_set_f32(init_latent, 0.1159f);
} else {
ggml_set_f32(init_latent, 0.f);
}
size_t t0 = ggml_time_ms();
std::vector<struct ggml_tensor*> ref_latents;
@ -2085,6 +2076,8 @@ sd_image_t* edit(sd_ctx_t* sd_ctx,
std::vector<float> sigmas = sd_ctx->sd->denoiser->get_sigmas(sample_steps);
ggml_tensor* init_latent = generate_init_latent(sd_ctx, work_ctx, width, height);
sd_image_t* result_images = generate_image(sd_ctx,
work_ctx,
init_latent,