NVIDIA RTX Kit
NVIDIA RTX? Kit is a suite of neural rendering technologies to ray trace games with AI, render scenes with immense geometry, and create game characters with photo-realistic visuals.
Get Started
Download Zorah Sample
Notify Me for Future Releases
Zorah technology demo, built in Unreal Engine 5
Watch Trailer
See Zorah in action in our visual trailer shown during the NVIDIA keynote at CES 2025.
What are Cooperative Vectors?
See how cooperative vectors unlocks the full potential of neural rendering.
Path Tracing in Unreal Engine 5
Learn what you can do with real-time path tracing in UE5.
Get Started with RTX Kit
In this tutorial, we will focus on how to get started with the new SDKs available today through NVIDIA RTX Kit.
Key Benefits
Train and Deploy AI From Shaders
Unlock new compression techniques that reduce texture memory consumption up to 8X and compress shader code for up to 5X faster material processing. Allows developers to render film-quality assets in real time.
Path Trace at Game-Ready Performance
Build your bounding volume hierarchy (BVH) faster and simulate physically accurate reflections, shadows and global illumination for detailed worlds.
Accelerate Digital Human Rendering
Hardware-accelerated strand-based hair provides a simplified workflow with photo-realistic results and ray-traced subsurface scattering renders skin better.
Get Started with RTX Kit Technologies
RTX Neural Shaders
Train and deploy neural networks within shaders to unlock new compression and approximation techniques for next-generation asset generation.
RTX Neural Texture Compression
Use AI to compress textures with up to 8x VRAM improvement at similar visual fidelity to traditional block compression at runtime.
RTX Texture Filtering
Randomly samples textures after shading and filters difficult volumes, reducing artifacts and improving image quality.
RTX Neural Materials
Use AI to compress shader code of complex multi-layered materials for up to 8X faster material processing to bring real-time performance to film-quality assets.
RTX Texture Streaming
Tool that divides textures into smaller tiles and efficiently manages and loads them based on need.
RTX Mega Geometry
Accelerate BVH building for cluster-based geometry systems, enabling up to 100x more ray-traced triangles and better performance in heavily ray-traced scenes.
RTX Dynamic Illumination
Library of importance sampling algorithms that sample the most important lights in a scene and renders them physically accurate.
- ReSTIR Direct Illumination: One-bounce lighting from many lights without complex data
- ReSTIR Global Illumination: Resamples multi-bounce indirect lighting paths
- ReSTIR Path Tracing: Samples the most impactful light paths for increased image quality
Engine 5
RTX Global Illumination
Scalable solution to compute multi-bounce indirect lighting.
- Neural Radiance Cache (NRC): Use AI to predict the amount of light that's emitted from or passing through a specific area
- Spatial Hash Radiance Cache( SHaRC): Fast and scalable algorithm to compute light in a given area
- Dynamic Diffuse Global Illumination (DDGI): Probe-based solution that delivers multi-bounce indirect lighting without lightmaps or baking.
Engine 5
NVIDIA RTX? Path Tracing
NVIDIA RTX? Path Tracing (RTXPT) merges years of best practices within real-time ray tracing and neural graphics development for building a real-time path tracer.
NVIDIA Real-Time Denoisers
Library of denoisers designed to work with low ray-per-pixel signals.
- ReBLUR: Denoise diffuse and specular signals
- SIGMA: Denoise shadows
- ReLAX: Denoise RTX Dynamic Illumination signals.
NVIDIA Opacity Micro-Map
Efficiently map intricate geometries onto triangles and encode their opacity for better ray tracing performance.
RTX Memory Utility
Compaction and suballocation of acceleration structures to reduce memory consumption.
RTX Character Rendering
Set of tools to create path-traced stand-based hair and skin.
- Subsurface Scattering (SSS): Render skin with accurate lighting and translucency
- Linear Swept Spheres (LSS): Blackwell accelerated sphere and curve primitive for strand-based path-traced hair.
- Enhanced analytical Bi-Directional Scattering Distribution Function (BSDF): Provides shading for strand-based hair.
- Disjoint Orthogonal Triangles Strips (DOTS): Provides high-quality strand-based hair for all GPUs.
Additional RTX Rendering Technologies
Generative AI Face Rendering
RTX Neural Faces is a new generative AI algorithm that allows developers to cross the uncanny valley in real time. This AI model is trained on a character dataset built from the original photographs of the model. Using a synthetic generation pipeline, the base character dataset is expanded to variants with different lighting conditions, emotions and occlusion. This model then takes a rasterized face and 3D pose and generates an enhanced face in real time.
Better With DLSS and Reflex
DLSS is a revolutionary suite of neural rendering technologies that uses AI to boost FPS, reduce latency, and improve image quality. ?The latest breakthrough, DLSS 4, brings new Multi Frame Generation and enhanced Ray Reconstruction and Super Resolution, powered by NVIDIA GeForce RTX? 50 Series GPUs and fifth-generation Tensor Cores.
Reflex technologies optimize the graphics pipeline for ultimate responsiveness, providing faster target acquisition, quicker reaction times, and improved aim precision in competitive games. Reflex 2 introduces Frame Warp, which further reduces latency based on the game’s latest mouse input.
Improving Ray Traced Shader Performance
Shader Execution Reordering (SER) is a performance optimization that unlocks the potential for better execution and memory coherence in ray tracing shaders. SER allows applications to easily reorder threads on the GPU, reducing the divergence effects that occur in particularly challenging ray tracing workloads like path tracing. New SER innovations in GeForce RTX 50 Series GPUs further improve efficiency and precision of shader reordering operations compared to GeForce RTX 40 Series GPUs.
RTX Kit Library
More Resources
Get Started with NVIDIA RTX Kit Today