Skip to content

Add ltxav latent2rgb projection matrix #1502

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Merged
leejet merged 1 commit into from
May 17, 2026
+151 −4
Merged

Add ltxav latent2rgb projection matrix #1502

Show file tree
Hide file tree
Changes from all commits
Commits
Show all changes
1 commit
Select commit
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
132 changes: 132 additions & 0 deletions src/latent-preview.h
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -4,6 +4,138 @@
#include "ggml.h"
#include "tensor.hpp"

const float ltxav_latent_rgb_proj[128][3] = {
{-0.0293802f, -0.0362516f, -0.0291386f},
{0.0117735f, 0.0223435f, 0.018856f},
{0.00922335f, 0.0145666f, 0.0038772f},
{0.0227299f, 0.0109122f, 0.0131384f},
{0.00192413f, 0.0024648f, 0.00689245f},
{-0.0105576f, -0.0135933f, -0.00873841f},
{-0.0310222f, -0.0396358f, -0.0408445f},
{0.0149737f, 0.0316323f, 0.03415f},
{0.0027752f, 0.00814889f, 0.0108575f},
{-0.000678017f, -0.00180589f, -0.0161684f},
{0.0153964f, 0.0159774f, 0.0186479f},
{-0.0222799f, -0.0202068f, -0.0181082f},
{0.0128696f, 0.00754416f, -0.00673279f},
{0.0142729f, 0.00448099f, -0.00193934f},
{-0.014066f, -0.0193755f, -0.0160104f},
{-0.0176785f, -0.015903f, -0.0152621f},
{0.0307381f, 0.0292082f, 0.0328668f},
{0.0332928f, 0.0368629f, 0.0440893f},
{0.0186304f, 0.0124069f, 0.0160734f},
{0.00477787f, -0.00315658f, -0.000145702f},
{0.0183099f, 0.0122593f, 0.00599732f},
{-0.0194551f, -0.0183924f, -0.0147465f},
{0.0025732f, 0.00442582f, 0.0173176f},
{-0.0169423f, -0.0293863f, -0.0225908f},
{-0.021228f, -0.0265094f, -0.0253049f},
{0.0327111f, 0.0187133f, 0.0266184f},
{-0.0226425f, -0.0313781f, -0.0414356f},
{-0.0163142f, -0.0146144f, -0.0171793f},
{0.0192183f, 0.0108411f, 0.00829186f},
{-0.032246f, -0.0274846f, -0.0287434f},
{0.00345399f, 0.0115567f, 0.015288f},
{0.000972292f, 0.00331303f, 0.0110501f},
{0.000939494f, -0.00705084f, -0.00979449f},
{0.0405155f, 0.0339534f, 0.0419513f},
{0.0198596f, 0.0186626f, 0.0213766f},
{-0.00982375f, -0.00880439f, -0.00470429f},
{-0.0313707f, -0.0258098f, -0.0211663f},
{0.0144159f, 0.0117896f, 0.0141573f},
{0.0164571f, 0.0149178f, 0.00921599f},
{0.0436184f, 0.0346583f, 0.0360647f},
{-0.00289744f, -0.000752502f, 0.000675415f},
{-0.00621715f, -0.000558851f, 0.0135814f},
{-0.00817579f, -0.0113584f, -0.00556793f},
{0.00965067f, 0.0178221f, 0.015821f},
{0.0211832f, 0.0180827f, 0.0154707f},
{-0.00412858f, -0.00374182f, 0.0029568f},
{-0.0175603f, -0.0226242f, -0.0279012f},
{-0.00437471f, -0.00668329f, 0.000164887f},
{-0.0355983f, -0.0419093f, -0.0383065f},
{0.0144314f, 0.0192514f, 0.0175639f},
{-0.0130693f, -0.00569884f, -0.00341647f},
{-0.00184689f, 0.00189034f, -0.00190561f},
{0.019457f, 0.00842282f, 0.0123738f},
{-0.00477146f, -0.00206932f, 0.00283336f},
{-0.0364544f, -0.0256141f, -0.0322336f},
{-0.0295634f, -0.0295048f, -0.021057f},
{0.0144484f, 0.0191862f, 0.0112445f},
{0.0536406f, 0.0582376f, 0.0570966f},
{0.0085178f, 0.00748455f, 0.00995162f},
{-0.0136637f, -0.0172914f, -0.0195978f},
{-0.0339128f, -0.0392692f, -0.0355216f},
{0.00612855f, 0.00568303f, -0.00212333f},
{-0.0029225f, 0.00668819f, 0.0122131f},
{0.00841843f, 0.000181587f, -0.00650644f},
{-0.00514432f, 0.0127043f, 0.0168049f},
{-0.00997384f, -0.00602262f, -0.0164031f},
{0.0233226f, 0.033254f, 0.0307266f},
{-0.0110201f, -0.0164169f, -0.0161829f},
{-0.0195952f, -0.0177943f, -0.0115377f},
{-0.00523918f, -0.00452043f, 0.00267397f},
{0.0313464f, 0.0288241f, 0.0262496f},
{0.0324018f, 0.0339792f, 0.0312209f},
{-0.0163247f, -0.0230503f, -0.0263239f},
{0.000420577f, -0.00535659f, -0.00663426f},
{-0.012897f, -0.00203767f, -0.000622678f},
{-0.0632956f, -0.0651325f, -0.0584479f},
{-0.00426634f, -0.0150098f, -0.00719348f},
{0.00476109f, 0.00674315f, 0.00895472f},
{0.0129384f, 0.0158352f, 0.00963773f},
{-0.0333379f, -0.0410522f, -0.0317462f},
{0.00344054f, 0.00275915f, 0.00355732f},
{0.0209062f, 0.0273453f, 0.0222967f},
{0.00827287f, 0.00223045f, 0.00325844f},
{-0.0149132f, -0.0183973f, -0.0199781f},
{-0.0100786f, -0.0103681f, -0.00218224f},
{-0.00791409f, -0.00405153f, -0.00599893f},
{0.0176126f, 0.00618342f, -6.6569e-05f},
{0.00942486f, -0.00206494f, -0.00580324f},
{0.00678093f, -0.00291742f, -0.000921195f},
{-0.0221992f, -0.00483162f, -0.000848514f},
{-0.0151587f, -0.0157166f, -0.0107302f},
{0.00909646f, 0.0171985f, 0.0169785f},
{0.0127224f, 0.0170612f, 0.0303428f},
{0.0196562f, 0.00212451f, 0.0127744f},
{0.0233013f, 0.0228994f, 0.0108387f},
{0.00520761f, 0.00992992f, 0.0066267f},
{-3.77736e-05f, 0.00460229f, -0.00475132f},
{-0.0311763f, -0.0453566f, -0.0486901f},
{0.0195798f, 0.0281246f, 0.0180102f},
{-0.0174149f, -0.0240867f, -0.0188785f},
{0.000104658f, 0.00659008f, 0.0144594f},
{-0.00311086f, -0.0241426f, -0.0244164f},
{0.0336462f, 0.0305173f, 0.0331101f},
{0.0613625f, 0.066561f, 0.0610198f},
{-0.0286757f, -0.0325401f, -0.0338036f},
{0.0141534f, 0.0188266f, 0.0253059f},
{-0.00548197f, -0.00170198f, 0.00561745f},
{-0.0117872f, -0.00763218f, -0.0145037f},
{-0.0253304f, -0.0245217f, -0.0144905f},
{-0.00393624f, 0.00350048f, 0.00765561f},
{0.0113625f, 0.00561576f, -0.0113672f},
{-0.0301278f, -0.0261472f, -0.0301903f},
{0.016863f, 0.0173781f, 0.0170916f},
{-0.00495108f, 0.00686749f, 0.00282767f},
{0.00125409f, -0.00378072f, -0.00264117f},
{-0.00264001f, -0.00529772f, -0.0113109f},
{-0.054888f, -0.0575461f, -0.0509146f},
{-0.019442f, -0.0232916f, -0.0258637f},
{0.0133362f, 0.0161808f, 0.00917951f},
{-0.0349002f, -0.0372642f, -0.0466206f},
{-0.00216926f, 0.00208738f, 0.00766492f},
{0.0268528f, 0.0301179f, 0.0228579f},
{0.0226176f, 0.021536f, 0.023152f},
{-0.0110646f, -0.00511349f, -0.0137346f},
{-0.0098424f, -0.00218176f, 0.00414545f},
{0.00200216f, 0.00441732f, -0.0136515f},
{0.00695946f, 0.00313109f, -0.00379435f},
{0.0188377f, 0.0144059f, 0.0229724f},
};
float ltxav_latent_rgb_bias[3] = {0.043849f, 0.0201085f, 0.0150286f};

const float wan_21_latent_rgb_proj[16][3] = {
{0.015123f, -0.148418f, 0.479828f},
{0.003652f, -0.010680f, -0.037142f},
Expand Down
23 changes: 19 additions & 4 deletions src/stable-diffusion.cpp
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -1606,17 +1606,32 @@ class StableDiffusionGGML {
void* step_callback_data,
bool is_noisy) {
if (preview_mode == PREVIEW_PROJ) {
sd::Tensor<float> _latents = latents;
int patch_sz = 1;
const float(*latent_rgb_proj)[3] = nullptr;
float* latent_rgb_bias = nullptr;
bool is_video = preview_latent_tensor_is_video(latents);
uint32_t dim = is_video ? static_cast<uint32_t>(latents.shape()[3]) : static_cast<uint32_t>(latents.shape()[2]);
if (version == VERSION_LTXAV) {
if (is_video) {
_latents = sd::ops::slice(_latents, 3, 0, 128);
} else {
_latents = sd::ops::slice(_latents, 2, 0, 128);
}
dim = 128;
}

if (dim == 128) {
if (sd_version_uses_flux2_vae(version)) {
latent_rgb_proj = flux2_latent_rgb_proj;
latent_rgb_bias = flux2_latent_rgb_bias;
patch_sz = 2;
} else if (version == VERSION_LTXAV) {
latent_rgb_proj = ltxav_latent_rgb_proj;
latent_rgb_bias = ltxav_latent_rgb_bias;
} else {
LOG_WARN("No latent to RGB projection known for this model");
return;
}
} else if (dim == 48) {
if (sd_version_is_wan(version)) {
Expand Down Expand Up @@ -1656,13 +1671,13 @@ class StableDiffusionGGML {
return;
}

uint32_t frames = is_video ? static_cast<uint32_t>(latents.shape()[2]) : 1;
uint32_t img_width = static_cast<uint32_t>(latents.shape()[0]) * patch_sz;
uint32_t img_height = static_cast<uint32_t>(latents.shape()[1]) * patch_sz;
uint32_t frames = is_video ? static_cast<uint32_t>(_latents.shape()[2]) : 1;
uint32_t img_width = static_cast<uint32_t>(_latents.shape()[0]) * patch_sz;
uint32_t img_height = static_cast<uint32_t>(_latents.shape()[1]) * patch_sz;

uint8_t* data = (uint8_t*)malloc(frames * img_width * img_height * 3 * sizeof(uint8_t));
GGML_ASSERT(data != nullptr);
preview_latent_video(data, latents, latent_rgb_proj, latent_rgb_bias, patch_sz);
preview_latent_video(data, _latents, latent_rgb_proj, latent_rgb_bias, patch_sz);
sd_image_t* images = (sd_image_t*)malloc(frames * sizeof(sd_image_t));
GGML_ASSERT(images != nullptr);
for (uint32_t i = 0; i < frames; i++) {
Expand Down
Loading