# TRELLIS.2 | Microsoft | Knowledge Base | Instagit

Native and Compact Structured Latents for 3D Generation

GitHub Stars: 10.2k

Repository: https://github.com/microsoft/TRELLIS.2

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## Articles

### [How the SparseTensor Class Represents 3D Geometry in TRELLIS 2's Latent Space](/microsoft/TRELLIS.2/how-does-the-sparsetensor-class-work-for-3d-geometry)

Learn how TRELLIS.2's SparseTensor class efficiently represents 3D geometry in latent space using coordinate-feature pairs for dual-backend support. Optimize your sparse data operations.

- Tags: internals
- Published: 2026-08-04

### [How to Fine-Tune Pretrained TRELLIS.2 Checkpoints at Higher Resolutions Using the `finetune_ckpt` Config](/microsoft/TRELLIS.2/how-to-fine-tune-checkpoints-at-higher-resolutions)

Learn to fine-tune pretrained TRELLIS.2 checkpoints at higher resolutions. Update config settings, point to your weights, and run train.py for improved model performance.

- Tags: how-to-guide
- Published: 2026-08-04

### [How pbr_attr_layout Maps Base Color, Metallic, Roughness, and Alpha to Mesh Attributes in TRELLIS.2](/microsoft/TRELLIS.2/how-does-pbr_attr_layout-map-pbr-attributes-to-mesh)

Discover how pbr_attr_layout maps base color, metallic, roughness, and alpha to mesh attributes in TRELLIS.2. Understand texture tensor channel allocation for material properties.

- Tags: deep-dive
- Published: 2026-08-04

### [A100 vs H100 GPU Performance for 3D Generation in TRELLIS 2: Architecture Comparison and Benchmarks](/microsoft/TRELLIS.2/performance-differences-a100-vs-h100-for-3d-generation)

Discover A100 vs H100 GPU performance for 3D generation in TRELLIS 2. See how the H100 offers up to 2x faster processing and reduced training times.

- Tags: performance
- Published: 2026-08-04

### [How to Debug Generation Failures and Tune Sampler Parameters in TRELLIS 2](/microsoft/TRELLIS.2/how-to-debug-generation-failures-and-tune-sampler_params)

Debug TRELLIS 2 generation failures by understanding invalid sampler_params ranges, stale ResumableSampler state, and shape mismatches. Tune parameters for optimal results.

- Tags: how-to-guide
- Published: 2026-08-04

### [How to Preprocess Training Data Using the DataToolkit for O-Voxel Conversion](/microsoft/TRELLIS.2/how-to-preprocess-training-data-for-o-voxel-conversion)

Learn to preprocess training data for O-Voxel conversion using TRELLIS.2's DataToolkit. Discover, normalize, and aggregate your PBR mesh dumps efficiently.

- Tags: how-to-guide
- Published: 2026-08-04

### [How to Handle Alpha Channel Transparency in GLB Exports with TRELLIS.2](/microsoft/TRELLIS.2/how-to-handle-alpha-channel-transparency-in-glb-exports)

Learn how to handle alpha channel transparency in GLB exports using TRELLIS.2. Detect non-opaque pixels and set alphaMode to BLEND for correct rendering of semi-transparent materials.

- Tags: how-to-guide
- Published: 2026-08-04

### [How to Switch Attention Backend Between Flash-Attn and xFormers Using ATTN_BACKEND in TRELLIS.2](/microsoft/TRELLIS.2/how-to-switch-attention-backend)

Easily switch TRELLIS.2 attention backend between flash-attn and xformers by setting the ATTN_BACKEND environment variable. Control your implementation at runtime.

- Tags: how-to-guide
- Published: 2026-08-04

### [Understanding shape_slat_decoder and tex_slat_decoder in the TRELLIS.2 Generation Pipeline](/microsoft/TRELLIS.2/what-is-the-role-of-shape_slat_decoder-and-tex_slat_decoder)

Discover how shape_slat_decoder and tex_slat_decoder in TRELLIS.2 reconstruct voxel grids and synthesize texture maps from SLAT sequences using the SLatFlowModel.

- Tags: internals
- Published: 2026-08-04

### [How to Configure Distributed Training with --num_nodes and --node_rank in TRELLIS.2](/microsoft/TRELLIS.2/how-to-configure-distributed-training)

Learn to configure distributed training in TRELLIS.2 using --num_nodes and --node_rank. Master multi-machine training with PyTorch's torch.distributed backend.

- Tags: how-to-guide
- Published: 2026-08-04

### [How to Implement Custom Image Conditioning in TRELLIS.2 Using the image_feature_extractor Module](/microsoft/TRELLIS.2/how-to-implement-custom-image-conditioning)

Learn to implement custom image conditioning in TRELLIS.2 with the image_feature_extractor module. Extend ImageConditioningBase and configure your pipeline for advanced image feature extraction.

- Tags: how-to-guide
- Published: 2026-08-04

### [How to Generate PBR Textures for Existing 3D Meshes Using Trellis2TexturingPipeline](/microsoft/TRELLIS.2/how-to-generate-pbr-textures-for-existing-3d-meshes)

Generate PBR textures for 3D models with Trellis2TexturingPipeline. Convert meshes and images into base-color, metallic, roughness, and alpha maps efficiently.

- Tags: how-to-guide
- Published: 2026-08-04

### [How to Enable Low‑VRAM Mode and Configure PYTORCH_CUDA_ALLOC_CONF for Memory Optimization in TRELLIS.2](/microsoft/TRELLIS.2/how-to-enable-low_vram-mode-and-configure-pytorch_cuda_alloc_conf)

Optimize TRELLIS.2 memory usage by enabling low VRAM mode and configuring PYTORCH_CUDA_ALLOC_CONF. Reduce VRAM consumption up to 70% by loading model weights on CPU.

- Tags: how-to-guide
- Published: 2026-08-04

### [How to Train TRELLIS.2 from Scratch Using train.py and Custom JSON Configurations](/microsoft/TRELLIS.2/how-to-train-trellis2-from-scratch)

Train TRELLIS.2 from scratch using custom JSON and train.py. Build sparse voxel models, run distributed training with mixed precision and EMA.

- Tags: how-to-guide
- Published: 2026-08-04

### [How the Structured Latent (SLat) Representation Encodes Shape and Texture in TRELLIS 2](/microsoft/TRELLIS.2/how-does-the-structured-latent-representation-encode-shape-and-texture-information)

Discover how TRELLIS 2's structured latent SLat representation encodes shape and texture. Learn about sparse voxel occupancy tokens and flow-generated dense features for efficient 3D generation.

- Tags: deep-dive
- Published: 2026-08-04

### [How to Export Generated 3D Assets to GLB with PBR Materials Using o_voxel.postprocess.to_glb()](/microsoft/TRELLIS.2/how-to-export-generated-3d-assets-to-glb-with-pbr-materials)

Export 3D assets to GLB with PBR materials using o_voxel.postprocess.to_glb(). Streamline your workflow with GPU-accelerated mesh cleaning and texture baking.

- Tags: how-to-guide
- Published: 2026-08-04

### [TRELLIS.2 Sampler Types and Parameters: FlowEulerSampler, CFG, and Guidance-Interval Explained](/microsoft/TRELLIS.2/what-are-the-different-sampler-types-and-their-parameters)

Explore TRELLIS.2 sampler types like FlowEulerSampler and their parameters. Understand sigma_min, guidance_strength, and guidance_interval for advanced noise control.

- Tags: api-reference
- Published: 2026-08-04

### [How to Use rembg Background Removal in the TRELLIS.2 Image Preprocessing Pipeline](/microsoft/TRELLIS.2/how-to-use-rembg-background-removal-in-image-preprocessing-pipeline)

Learn to use rembg background removal in the TRELLIS.2 image preprocessing pipeline by configuring the rembg_model parameter. Enhance your image processing workflow with automatic background removal.

- Tags: how-to-guide
- Published: 2026-08-04

### [How classifier_free_guidance_mixin Works in TRELLIS 2 Sampling](/microsoft/TRELLIS.2/how-does-classifier_free_guidance_mixin-work-in-the-sampling-process)

Discover how classifier_free_guidance_mixin enhances TRELLIS 2 sampling by blending predictions. Steer diffusion outputs effectively without an external classifier.

- Tags: internals
- Published: 2026-08-04

### [How to Configure pipeline_type Options for Different Resolutions in TRELLIS.2](/microsoft/TRELLIS.2/how-to-configure-pipeline_type-options-for-different-resolutions)

Master TRELLIS.2 pipeline_type options for resolutions 512, 1024, 1024_cascade, and 1536_cascade. Optimize your image-to-3D workflows with these configuration guides.

- Tags: how-to-guide
- Published: 2026-08-04

### [Understanding the Sparse Structure Flow Model and Sparse Structure Decoder Architecture in TRELLIS.2](/microsoft/TRELLIS.2/what-is-the-architecture-of-the-sparse-structure-flow-model-and-sparse_structure_decoder)

Explore the sparse structure flow model and sparse structure decoder architecture in TRELLIS.2. Understand transformer diffusion and 3D UNet upsampling for voxel grids.

- Tags: architecture
- Published: 2026-08-04

### [How to Use `Trellis2ImageTo3DPipeline.from_pretrained()` for Image-to-3D Inference](/microsoft/TRELLIS.2/how-to-use-trellis2imaget3dpipeline-from_pretrained-for-image-to-3d-inference)

Learn how to use Trellis2ImageTo3DPipeline.from_pretrained to generate 3D meshes from 2D images. Load, move to GPU, and run inference with TRELLIS.2-4B.

- Tags: how-to-guide
- Published: 2026-08-04

### [How O‑Voxel Sparse Voxel Representation Works for 3D Generation vs. Traditional Meshes](/microsoft/TRELLIS.2/how-does-o-voxel-sparse-voxel-representation-work-for-3d-generation-compared-to-traditional-meshes)

Discover how O-Voxel sparse voxel representation revolutionizes 3D generation. Explore its Flexible Dual Grid, memory efficiency, and advantages over traditional meshes.

- Tags: deep-dive
- Published: 2026-08-04

### [TRELLIS.2 Flow Model Training: Key Hyperparameters and Config Files Explained](/microsoft/TRELLIS.2/what-are-the-key-training-hyperparameters-and-config-files-for-trellis-2-flow-model-training)

Master TRELLIS.2 flow model training by understanding key hyperparameters and config files. Learn about batch size, learning rate, max steps, and grad clip for optimal results.

- Tags: how-to-guide
- Published: 2026-08-04

### [How to Debug Common TRELLIS.2 Issues: Artifacts and Generation Failures](/microsoft/TRELLIS.2/how-to-debug-common-trellis-2-issues-like-artifacts-or-generation-failures)

Debug TRELLIS.2 issues like artifacts and generation failures. Set log level, validate vectors, reduce dt, and visualize grids to pinpoint problems.

- Tags: how-to-guide
- Published: 2026-08-04

### [What Are `ShapesLatDecoder` and `TexsLatDecoder` in the TRELLIS.2 Pipeline?](/microsoft/TRELLIS.2/what-is-the-specific-role-of-shape-slat-decoder-and-tex-slat-decoder-in-the-trellis-2-pipeline)

Discover how ShapesLatDecoder and TexsLatDecoder in TRELLIS.2 reconstruct 3D geometry and appearance from latent tokens, enabling efficient asset storage and high-fidelity regeneration.

- Tags: internals
- Published: 2026-08-04

### [How TRELLIS.2 Coordinates Its Three-Stage Sampling Pipeline: From Image to 3D Mesh](/microsoft/TRELLIS.2/explain-the-coordination-of-the-three-stage-sampling-process-across-trellis-2-pipeline-components)

Discover how TRELLIS.2 coordinates its three-stage sampling pipeline to generate 3D assets from single images. Learn about the flow-matching models and sequential chaining for final geometry and texture.

- Tags: internals
- Published: 2026-08-04

### [How Image Conditioning Works with the `ImageFeatureExtractor` in TRELLIS 2](/microsoft/TRELLIS.2/how-does-image-conditioning-work-with-the-image-feature-extractor-in-trellis-2)

Learn how TRELLIS 2 uses DINO-based feature extractors for image conditioning. Discover how input images become patch-level embeddings and inject into generative models via a lazy-initialization mixin.

- Tags: how-to-guide
- Published: 2026-08-04

### [Sparse 3D VAE with 16× Spatial Downsampling in TRELLIS‑2: Architecture Deep Dive](/microsoft/TRELLIS.2/describe-the-sparse-3d-vae-architecture-with-16x-spatial-downsampling-in-trellis-2)

Explore the TRELLIS-2 sparse 3D VAE architecture. Discover how 16x spatial downsampling, residual blocks, and pixel-shuffle upsampling compress volumetric assets efficiently. Learn more.

- Tags: architecture
- Published: 2026-08-04

### [How to Export GLB Files with Full PBR Material Support from TRELLIS.2 O-Voxel Outputs](/microsoft/TRELLIS.2/how-to-properly-export-glb-files-with-pbr-material-support-from-trellis-2-o-voxel-outputs)

Learn to export GLB files with PBR materials from TRELLIS.2 O-Voxel outputs. This guide details mesh extraction, UV unwrapping, and texture baking for high-fidelity rendering.

- Tags: how-to-guide
- Published: 2026-08-04

### [How Mesh Simplification Is Performed in TRELLIS.2: GPU-Based Decimation with nvdiffrast Post-Processing](/microsoft/TRELLIS.2/how-is-mesh-simplification-performed-using-nvdiffrast-post-generation-in-trellis-2)

Discover how TRELLIS.2 simplifies meshes using GPU-accelerated decimation and nvdiffrast for high-fidelity texture baking. Learn about the two-stage pipeline for efficient 3D asset processing.

- Tags: how-to-guide
- Published: 2026-08-04

### [What Parameter Controls max_num_tokens and Output Resolution in TRELLIS 2?](/microsoft/TRELLIS.2/what-parameter-controls-max-num-tokens-and-how-does-it-affect-output-resolution-in-trellis-2)

Discover how the max_num_tokens parameter in TRELLIS 2 controls output resolution by limiting 3-D tokens generated in the shape-latent cascade.

- Tags: how-to-guide
- Published: 2026-08-04

### [How BiRefNet Background Removal Preprocessing Works in TRELLIS.2](/microsoft/TRELLIS.2/how-does-the-birefnet-background-removal-preprocessing-work-for-trellis-2)

Discover how BiRefNet background removal in TRELLIS.2 automatically creates alpha channel masks for precise foreground subject isolation before 3D generation.

- Tags: how-to-guide
- Published: 2026-08-04

### [How to Switch Between Flash-Attention and XFormers Backends in TRELLIS.2](/microsoft/TRELLIS.2/how-to-switch-between-flash-attention-and-xformers-attention-backends-in-trellis-2)

Learn to switch between Flash-Attention and XFormers backends in TRELLIS.2 using environment variables or the Python API for faster model performance.

- Tags: how-to-guide
- Published: 2026-08-04

### [Role of the Sparse Transformer with ModulatedSparseTransformerCrossBlock in TRELLIS.2: Architecture Deep Dive](/microsoft/TRELLIS.2/what-is-the-role-of-the-sparse-transformer-with-modulatedsparsetransformercrossblock-in-trellis-2)

Explore the role of the sparse transformer and ModulatedSparseTransformerCrossBlock in TRELLIS.2 for efficient 3D generation. Learn how it combines sparse voxel operations, cross-attention, and adaptive layer-norm modulation.

- Tags: architecture
- Published: 2026-08-04

### [How to Train SC-VAE Models (ShapeVAE and TexVAE) from Scratch in TRELLIS.2](/microsoft/TRELLIS.2/how-to-train-the-sc-vae-models-shape-vae-and-tex-vae-from-scratch-for-trellis-2)

Learn to train SC-VAE models from scratch in TRELLIS.2. Instantiate FlexiDualGridVaeEncoder and FlexiDualGridVaeDecoder, wrap them in ShapeVaeTrainer, and launch training with a simple command.

- Tags: how-to-guide
- Published: 2026-08-04

### [How Does PBR Texture Decoding Work in TRELLIS.2: Base Color, Metallic, Roughness, and Alpha](/microsoft/TRELLIS.2/how-does-pbr-texture-decoding-base-color-metallic-roughness-alpha-function-in-trellis-2)

Learn how TRELLIS.2 decodes PBR texture channels like base color, metallic, roughness, and alpha using a layout based indexing system. Discover texture sampling, material factors, and gamma correction.

- Tags: how-to-guide
- Published: 2026-08-04

### [TRELLIS.2 GPU Memory Requirements by Output Resolution: Complete Hardware Guide](/microsoft/TRELLIS.2/what-are-the-gpu-memory-requirements-for-different-output-resolutions-in-trellis-2)

Discover TRELLIS.2 GPU memory requirements for 512, 1024, and 1536 resolutions. Understand VRAM needs for your hardware and optimize performance with our complete guide.

- Tags: hardware-guide
- Published: 2026-08-04

### [How the TRELLIS.2 Cascade Pipeline Upsamples Resolution (512→1024→1536) for 3D Generation](/microsoft/TRELLIS.2/how-does-the-cascade-pipeline-for-resolution-upsampling-512-1024-1536-work-in-trellis-2)

Discover how the TRELLIS.2 cascade pipeline upsamples resolution from 512 to 1536 for 3D generation. Learn about its three stages SI2, IO24, and IS36 and memory-efficient techniques.

- Tags: deep-dive
- Published: 2026-08-04

### [Classifier‑Free Guidance Implementation in TRELLIS 2 Samplers: A Deep Dive into the Mixin Pattern](/microsoft/TRELLIS.2/what-is-the-implementation-of-classifier-free-guidance-in-trellis-2-samplers)

Explore how Classifier-Free Guidance is implemented in TRELLIS.2 samplers using the ClassifierFreeGuidanceSamplerMixin. Learn about weighted predictions for enhanced results.

- Tags: deep-dive
- Published: 2026-08-04

### [How to Convert Textured Meshes to O-Voxel Format for TRELLIS.2 Training Data](/microsoft/TRELLIS.2/how-to-convert-textured-meshes-to-o-voxel-format-for-trellis-2-training-data)

Convert textured meshes to O-Voxel format for TRELLIS.2 training data. Use the dump_mesh.py script for CUDA-accelerated voxelization and serialization into compact binary files.

- Tags: how-to-guide
- Published: 2026-08-04

### [Flow Matching Sampling in TRELLIS.2: How the Velocity-Based Diffusion Architecture Works](/microsoft/TRELLIS.2/explain-the-flow-matching-sampling-mechanism-in-trellis-2-s-diffusion-architecture)

Discover how flow matching sampling in TRELLIS.2 generates samples from noise by training a neural network to predict velocity fields and integrating them backward using Euler steps.

- Tags: deep-dive
- Published: 2026-08-04

### [How to Enable and Optimize Low VRAM Mode for TRELLIS.2 Inference](/microsoft/TRELLIS.2/how-can-i-enable-and-optimize-low-vram-mode-for-trellis-2-inference)

Discover how to enable and optimize low VRAM mode for TRELLIS.2 inference. Reduce GPU memory usage below 6 GB and stream layers from CPU with minimal runtime impact.

- Tags: how-to-guide
- Published: 2026-08-04

### [Sparse‑Structure SLat vs. Shape SLat in TRELLIS.2: Key Differences Explained](/microsoft/TRELLIS.2/what-is-the-difference-between-sparse-structure-and-shape-slat-in-trellis-2)

Discover the key differences between sparse structure SLat and shape SLat in TRELLIS.2. Understand how each stores geometry for efficient 3D modeling.

- Tags: deep-dive
- Published: 2026-08-04

### [How to Fine-Tune TRELLIS.2 on Custom Datasets Using O-Voxel Preprocessing](/microsoft/TRELLIS.2/how-to-fine-tune-trellis-2-on-custom-datasets-using-o-voxel-preprocessing)

Learn to fine-tune TRELLIS.2 on custom datasets. Convert 3D assets to O-Voxel format, create a PyTorch Dataset, and train using a custom configuration for optimal results.

- Tags: how-to-guide
- Published: 2026-08-04

### [How O-Voxel Sparse Representation Works in TRELLIS.2 for 3D Generation](/microsoft/TRELLIS.2/how-does-o-voxel-sparse-representation-work-in-trellis-2-for-3d-generation)

Discover how O-Voxel sparse representation in TRELLIS.2 enables compact latents for 3D generation. Learn about its field-free format, dual-grid geometry, and PBR material attributes for large-scale diffusion models.

- Tags: deep-dive
- Published: 2026-08-04

### [How TRELLIS.2 Handles Mesh Postprocessing: UV Unwrapping and Texture Baking with nvdiffrast](/microsoft/TRELLIS.2/how-does-mesh-postprocessing-handle-uv-unwrapping-and-texture-baking-with-nvdiffrast)

Discover how TRELLIS.2 uses nvdiffrast for efficient mesh postprocessing. Learn about UV unwrapping and texture baking with CUDA acceleration for PBR textures.

- Tags: how-to-guide
- Published: 2026-08-03

### [How max_num_tokens Controls Output Resolution in TRELLIS.2](/microsoft/TRELLIS.2/relationship-between-max_num_tokens-parameter-and-output-resolution-in-trellis-2)

Learn how the max_num_tokens parameter in TRELLIS.2 controls output resolution. Understand its impact on 3-D token generation and automatic downscaling.

- Tags: deep-dive
- Published: 2026-08-03

### [How to Debug Sampling Failures or Artifacts in TRELLIS.2 Generated Geometry](/microsoft/TRELLIS.2/how-to-debug-sampling-failures-or-artifacts-in-trellis-2-generated-geometry)

Debug TRELLIS.2 sampling failures and artifacts. Learn to enable verbose sampling, inspect tensors, and validate conditioning data to fix empty outputs and structural issues.

- Tags: how-to-guide
- Published: 2026-08-03

### [What Is Structured Latent (SLAT) Normalization in TRELLIS 2?](/microsoft/TRELLIS.2/what-is-structured-latent-slat-normalization-and-why-is-it-needed)

Discover structured latent SLAT normalization in TRELLIS 2. Learn how dtype casting layer normalization and feature-wise scaling ensure numerical stability for high-dimensional sparse tensors.

- Tags: deep-dive
- Published: 2026-08-03

### [How Background Removal Preprocessing Works in TRELLIS.2](/microsoft/TRELLIS.2/how-does-background-removal-preprocessing-work-in-trellis-2)

Discover how TRELLIS.2 background removal preprocessing isolates foreground objects using BiRefNet segmentation, resizing, alpha masks, and cropping for precise 3D generation.

- Tags: how-to-guide
- Published: 2026-08-03

### [How to Optimize TRELLIS.2 Performance with CUDA Kernels and FlexGEMM](/microsoft/TRELLIS.2/how-to-optimize-trellis-2-performance-with-cuda-kernels-and-flexgemm)

Optimize TRELLIS.2 performance using custom CUDA kernels and FlexGEMM. Accelerate sparse voxel processing with GPU-powered sparse matrix multiplication.

- Tags: performance
- Published: 2026-08-03

### [What Causes Slow Generation Times in TRELLIS.2: Architectural Bottlenecks Explained](/microsoft/TRELLIS.2/what-causes-slow-generation-times-in-trellis-2)

Discover what causes slow generation times in TRELLIS.2. Learn about architectural bottlenecks including high-resolution processing and memory overhead.

- Tags: internals
- Published: 2026-08-03

### [How to Implement Batch Generation with Multiple Input Images in TRELLIS.2](/microsoft/TRELLIS.2/how-to-implement-batch-generation-with-multiple-input-images-in-trellis-2)

Learn how to implement batch generation with multiple input images in TRELLIS.2. Streamline your 3D asset creation with efficient batch processing using the run method.

- Tags: how-to-guide
- Published: 2026-08-03

### [PBR Material Attributes in TRELLIS.2: Encoding and Rendering Guide](/microsoft/TRELLIS.2/what-are-pbr-material-attributes-and-how-are-they-encoded-in-trellis-2)

Learn how TRELLIS.2 encodes Physically-Based Rendering PBR material attributes like base color and roughness using texture objects or voxel tensors for efficient rendering.

- Tags: how-to-guide
- Published: 2026-08-03

### [How the Dual-Grid Representation Enables Instant Mesh-to-Latent Conversion in TRELLIS.2](/microsoft/TRELLIS.2/how-does-the-dual-grid-representation-enable-instant-mesh-to-latent-conversion)

Discover how TRELLIS.2 achieves instant mesh-to-latent conversion using a dual-grid representation, eliminating runtime rasterization for efficient 3D processing. Explore the sparse, quantized approach.

- Tags: deep-dive
- Published: 2026-08-03

### [Why Are Exported GLB Textures Transparent and How to Fix Alpha Blending in TRELLIS.2](/microsoft/TRELLIS.2/why-are-exported-glb-textures-transparent-and-how-to-fix-alpha-blending)

Fix transparent GLB textures from TRELLIS.2. Learn why exported GLB files ignore alpha channels and how to correct alpha blending for accurate rendering.

- Tags: how-to-guide
- Published: 2026-08-03

### [How to Fine-Tune TRELLIS.2 on a Custom Dataset: A Complete Technical Guide](/microsoft/TRELLIS.2/how-to-fine-tune-trellis-2-on-a-custom-dataset)

Learn how to fine-tune TRELLIS.2 on your custom dataset. This guide details subclassing DatasetBase, configuring JSON, and launching training for optimal results.

- Tags: how-to-guide
- Published: 2026-08-03

### [How the Shape-Conditioned Texture Pipeline Encodes Mesh Geometry in TRELLIS.2](/microsoft/TRELLIS.2/how-does-the-shape-conditioned-texture-pipeline-encode-mesh-geometry)

Discover how TRELLIS.2's shape-conditioned texture pipeline encodes mesh geometry using a dual-grid voxel representation and a shape encoder to create a geometry-aware latent shape-slat.

- Tags: deep-dive
- Published: 2026-08-03

### [How to Integrate TRELLIS.2 with Custom 3D Formats Using the O-Voxel API](/microsoft/TRELLIS.2/how-to-integrate-trellis-2-with-custom-3d-formats-using-o-voxel-api)

Integrate custom 3D formats with TRELLIS.2 using the O-Voxel API. Convert mesh data to sparse voxel representations for seamless pipeline integration.

- Tags: how-to-guide
- Published: 2026-08-03

### [SparseStructureFlowModel vs ShapesLatFlowModel vs TexSLatFlowModel: TRELLIS.2 Architecture Guide](/microsoft/TRELLIS.2/differences-between-sparse_structure_flow_model-shape_slat_flow_model-and-tex_slat_flow_model)

Understand the differences between SparseStructureFlowModel, ShapesLatFlowModel, and TexSLatFlowModel in TRELLIS.2. Learn how these models handle sparse 3D tensors for geometry and texture.

- Tags: architecture
- Published: 2026-08-03

### [Why SparseTensor Is Essential for TRELLIS.2 Efficiency: Eliminating Cubic Blow-Up in 3D Voxel Grids](/microsoft/TRELLIS.2/why-is-sparsetensor-essential-for-trellis-2-efficiency)

Discover how TRELLIS.2's SparseTensor abstraction stores active voxels, eliminating cubic blow-up and enabling high-resolution 3D generation on commodity GPUs.

- Tags: deep-dive
- Published: 2026-08-03

### [Understanding the SparseTensor Data Structure in TRELLIS.2: A Unified Backend for Sparse 3D Voxels](/microsoft/TRELLIS.2/what-is-the-sparsetensor-data-structure-in-trellis-2)

Discover the SparseTensor data structure in TRELLIS.2, the unified backend for sparse 3D voxel grids. Learn how it simplifies feature and coordinate operations with torch-sparse and spconv.

- Tags: deep-dive
- Published: 2026-08-03

### [How TRELLIS.2 Low VRAM Mode Solves GPU Memory Constraints](/microsoft/TRELLIS.2/how-can-trellis-2-low-vram-mode-help-with-memory-issues)

Discover how TRELLIS.2 low VRAM mode tackles GPU memory constraints. Enable high-quality 3D generation with minimal VRAM by intelligently managing models between CPU and GPU.

- Tags: how-to-guide
- Published: 2026-08-03

### [What Causes Out-of-Memory Errors in TRELLIS.2 High-Resolution Generation](/microsoft/TRELLIS.2/what-causes-out-of-memory-errors-in-trellis-2-high-resolution-generation)

TRELLIS.2 high-resolution generation suffers out-of-memory errors due to intermediate tensors scaling quadratically with image and cubically with voxel resolution, quickly exhausting GPU memory.

- Tags: deep-dive
- Published: 2026-08-03

### [How to Configure Classifier-Free Guidance Parameters for 3D Generation in TRELLIS 2](/microsoft/TRELLIS.2/how-to-configure-classifier-free-guidance-parameters-for-3d-generation)

Learn to configure classifier-free guidance parameters guidance_strength guidance_rescale and guidance_interval for 3D generation in TRELLIS 2. Optimize your results now.

- Tags: how-to-guide
- Published: 2026-08-03

### [How TRELLIS.2 Resolution Scaling Works in the Cascade Pipeline](/microsoft/TRELLIS.2/how-does-trellis-2-resolution-scaling-work-in-the-cascade-pipeline)

Discover how TRELLIS.2 resolution scaling creates high-quality 3D outputs. Learn about its cascade pipeline from 32x32 latents to 1024x1024 pixels.

- Tags: deep-dive
- Published: 2026-08-03

### [TRELLIS.2 Multi-Stage Cascade Pipeline Architecture: From 512³ to 1536³ Resolution](/microsoft/TRELLIS.2/what-is-the-trellis-2-multi-stage-cascade-pipeline-architecture-512-1024-1536)

Explore TRELLIS.2's multi-stage cascade pipeline architecture. Generate high-fidelity 3D assets from single images, scaling resolution from 512³ to 1536³ efficiently.

- Tags: architecture
- Published: 2026-08-03

### [How O-Voxel Handles Arbitrary Topology and Non-Manifold Geometry in 3D Generation](/microsoft/TRELLIS.2/how-does-o-voxel-handle-arbitrary-topology-and-non-manifold-geometry-in-3d-generation)

Discover how O-Voxel uses sparse voxel grids and CUDA-accelerated topology repair to handle arbitrary topology and non-manifold geometry for robust 3D generation.

- Tags: how-to-guide
- Published: 2026-08-03