mmp/pbrt-v3

Features

• Physically Based Rendering - Simulates the physical behavior of light to produce high-fidelity images based on physically based rendering theories.
• High-Quality Scene Rendering - Generates high-resolution images and G-buffer data by importing complex 3D geometry and materials.
• GPU Accelerated Rendering - Executes the rendering pipeline on parallel graphics hardware to generate high-fidelity images faster.
• BDSF Simulations - Simulates realistic material properties by calculating light reflection and refraction using bidirectional scattering distribution functions.
• Volumetric Scattering - Simulates atmospheric effects like fog and smoke using volumetric light-shadow interaction and scattering.
• Ray Tracing Engines - Functions as a rendering core that calculates light transport through ray-shape intersections and spatial acceleration structures.
• Bidirectional Scattering Distribution Functions - Uses bidirectional scattering distribution functions to simulate physically accurate and complex material reflections.
• Parallel Ray Tracing - Distributes independent pixel sample computations across multiple processing cores or GPU threads for faster rendering.
• Light Transport Simulations - Computes radiance and indirect illumination using advanced algorithms like path tracing and photon mapping.
• Volumetric Path Tracers - Computes light scattering and absorption within participating media like fog or smoke using volumetric path tracing.
• Path Tracing Algorithms - Simulates light behavior by selecting between volumetric path tracing, bidirectional path tracing, or photon mapping.
• Volumetric Path Tracing - Simulates light interacting with participating media by sampling absorption and scattering events along a ray.
• Spectral Simulations - Tracks light as discrete wavelength samples rather than RGB triplets to ensure physical spectral accuracy.
• Spectral Rendering Systems - Implements a rendering system that records radiance across discretized wavelength buckets to capture light behavior beyond standard RGB.
• Surface Material Definitions - Defines light scattering properties for conductors, dielectrics, and subsurface scattering using physically based models.
• Monte Carlo Integration - Employs Monte Carlo integration to solve the rendering equation by averaging random radiance samples.
• Rendering Equation Solvers - Computes light transport using unidirectional path tracing, bidirectional path tracing, Metropolis sampling, or stochastic progressive photon mapping.
• Geometric Primitives - Defines scene objects using standard geometric primitives such as spheres, cones, and triangle meshes.
• Bounding Volume Hierarchies - Uses hierarchical bounding volumes to accelerate ray-shape intersection tests by efficiently skipping empty space.
• Progressive Image Streaming - Streams in-progress images to a local window or remote viewer for real-time visual feedback.
• Camera Perspective Configurations - Provides comprehensive definitions for orthographic and perspective projections including focal and exposure controls.
• G-Buffer Generation - Outputs deep images containing auxiliary channels such as surface normals, albedo, and pixel positions for denoising.
• Area Light Sources - Simulates soft illumination by assigning emissive properties to rectangular surface areas.
• Light Source Functions - Provides functions to configure point, spot, distant, and projection lights to illuminate 3D scenes.
• Procedural Texture Generators - Generates spatially-varying material values programmatically using noise, checkerboards, and mathematical interpolations.
• Ray Intersection Acceleration - Finds intersections between rays and shapes faster by using spatial data structures to limit the number of checks.
• Complex Geometry Rendering - Handles massive geometric datasets comprising hundreds of millions of triangles and millions of curves.
• High Dynamic Range Rendering - Writes rendered output to high-precision formats like OpenEXR and PFM while supporting spectral data.
• Optical Data Integration - Uses measured spectral power distributions and lens description files to mimic real-world camera systems and illuminants.
• Spectral Radiance Recording - Stores radiance across discretized wavelength buckets in OpenEXR files to capture light behavior beyond standard RGB.
• Component Extensibility Interfaces - Provides an interface-based model for integrating custom shapes, cameras, and materials through standardized base classes.
• Engine Component Extensions - Allows integration of custom shapes, cameras, and materials by implementing and registering required classes.
• Live Preview Renderers - Displays a live rendering window that allows real-time camera movement, orientation adjustment, and exposure control.

Star history