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feat: trained Minimax VAE Latent2rgb proj #1856

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Merged
leejet merged 1 commit into from
Aug 5, 2026
Merged

feat: trained Minimax VAE Latent2rgb proj #1856

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27 changes: 27 additions & 0 deletions src/runtime/latent-preview.h
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Original file line number Diff line number Diff line change
Expand Up @@ -4,6 +4,33 @@
#include "core/tensor.hpp"
#include "ggml.h"

const float minimax_latent_rgb_proj[24][3] = {
{0.19819857f, 0.11584999f, 0.07929777f},
{-0.16047224f, -0.10601170f, -0.15996324f},
{0.47391951f, 0.37602475f, 0.20267826f},
{-0.09857441f, -0.27435449f, -0.51681751f},
{-0.18930605f, -0.10512278f, -0.28571478f},
{-0.15639569f, -0.18000929f, -0.25432852f},
{-0.07176921f, -0.10901598f, -0.06654253f},
{-0.05014077f, -0.05839826f, -0.05516087f},
{-0.05201424f, -0.04351913f, -0.01507579f},
{0.24750438f, 0.13307422f, 0.17684120f},
{0.07377446f, 0.10235858f, 0.11707827f},
{0.02908304f, 0.06587022f, 0.10643690f},
{-0.00670531f, -0.03857879f, 0.01750151f},
{-0.07119107f, -0.03083323f, -0.01995450f},
{-0.08612627f, -0.07253841f, -0.01442890f},
{0.08793202f, 0.08681750f, 0.02994647f},
{0.00876893f, 0.02721868f, 0.00091178f},
{-0.03484412f, -0.02711262f, -0.00110101f},
{-0.00679772f, -0.01844275f, -0.01683359f},
{0.04287028f, 0.01601068f, 0.04037397f},
{-0.00493432f, -0.00230528f, 0.00353911f},
{0.01495088f, 0.00292306f, 0.00416671f},
{0.00495307f, 0.05066542f, 0.05210543f},
{-0.02154842f, -0.01518524f, 0.00442402f}};
float minimax_latent_rgb_bias[3] = {0.07776964f, -0.01580954f, -0.06561434f};

const float ltxav_latent_rgb_proj[128][3] = {
{-0.0293802f, -0.0362516f, -0.0291386f},
{0.0117735f, 0.0223435f, 0.018856f},
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8 changes: 8 additions & 0 deletions src/stable-diffusion.cpp
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Expand Up @@ -2296,6 +2296,14 @@ class StableDiffusionGGML {
LOG_WARN("No latent to RGB projection known for this model");
return;
}
} else if (channels == 24) {
if(sd_version_is_minimax_h3(version)){
latent_rgb_proj = minimax_latent_rgb_proj;
latent_rgb_bias = minimax_latent_rgb_bias;
} else {
LOG_WARN("No latent to RGB projection known for this model");
return;
}
} else if (channels == 16) {
if (sd_version_is_sd3(version)) {
latent_rgb_proj = sd3_latent_rgb_proj;
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