Photorealism and Visual Fidelity

Photorealism and visual fidelity in Unity versus Unreal Engine represent the comparative analysis of how these two leading game engines approach the creation of computer-generated imagery that closely mimics real-world visual perception. The primary purpose of this comparison is to eliminate the perceptual gap between virtual environments and physical reality, thereby enhancing immersion, emotional engagement, and believability in interactive experiences ¹². This comparison matters critically because engine selection directly impacts production workflows, performance optimization strategies, and the ultimate visual quality achievable within project constraints. As both engines continue to evolve with advanced rendering technologies like ray tracing, global illumination, and physically-based materials, understanding their respective strengths and limitations has become essential for developers, artists, and technical directors making strategic technology decisions ⁵⁷.

Overview

The pursuit of photorealism in game engines emerged from the convergence of advancing GPU capabilities, the standardization of physically-based rendering (PBR) workflows, and increasing demand for visually compelling interactive experiences across gaming, architectural visualization, and virtual production. Both Unity and Unreal Engine adopted PBR pipelines to simulate light behavior according to physical laws rather than artistic approximations, utilizing energy conservation principles and standardized material properties like albedo, metalness, roughness, and normal mapping ⁹¹⁰¹¹.

The fundamental challenge this comparison addresses is determining which engine best serves specific project requirements while balancing visual ambition against performance constraints, platform targeting, and team expertise. Unreal Engine's rendering architecture traditionally emphasizes out-of-the-box visual quality with deferred rendering, while Unity offers flexibility through multiple render pipelines: the Built-in Render Pipeline, Universal Render Pipeline (URP), and High Definition Render Pipeline (HDRP), with HDRP specifically targeting photorealistic applications ².

The practice has evolved significantly with Unreal Engine 5's introduction of Lumen for fully dynamic global illumination and Nanite for virtualized geometry, enabling real-time rendering of film-quality assets ¹³. Unity has responded with Adaptive Probe Volumes for dynamic global illumination and enhanced ray tracing support in HDRP ⁴⁸. This evolution reflects the broader industry shift toward real-time rendering capabilities that rival offline production quality.

Key Concepts

Physically-Based Rendering (PBR)

Physically-based rendering is the foundational approach that simulates light behavior according to physical laws, ensuring surfaces never reflect more light than they receive and employing standardized material properties ⁹¹⁰. Both Unity and Unreal Engine implement PBR pipelines, though with architectural differences affecting workflow and results.

Example: When creating a photorealistic metal surface for an automotive configurator, an artist in Unreal Engine's Material Editor would set the metallic parameter to 1.0, adjust roughness between 0.2-0.4 for polished steel, and use a grayscale albedo map representing the metal's base reflectivity. In Unity's Shader Graph with HDRP, the artist would configure similar parameters but might need additional custom nodes to achieve equivalent subsurface scattering effects for painted metal finishes ¹⁰¹¹.

Global Illumination (GI)

Global illumination simulates indirect lighting bounces, where light reflects off surfaces to illuminate other areas, creating realistic ambient lighting and color bleeding effects. Unreal Engine features Lumen, a fully dynamic GI solution that calculates indirect lighting and reflections in real-time without requiring baked lightmaps ¹. Unity's HDRP offers Adaptive Probe Volumes for dynamic GI alongside traditional lightmapping ⁴.

Example: In an architectural visualization of a sunlit interior room, Lumen in Unreal Engine 5 automatically calculates how sunlight entering through windows bounces off the white walls to softly illuminate shadowed corners with a warm ambient glow. The same scene in Unity HDRP would require strategically placed Adaptive Probe Volumes throughout the room, with density increased near areas with complex lighting transitions, and configuration of the probe volume's dilation settings to prevent light leaking through walls ¹⁴.

Ray Tracing

Ray tracing traces light paths pixel-by-pixel to achieve physically accurate reflections, shadows, and global illumination. Both engines support hardware-accelerated ray tracing on RTX-capable GPUs, though Unreal's implementation is generally considered more mature and accessible ⁷⁸.

Example: For a high-end PC game featuring a rainy city street at night, Unreal Engine's ray tracing implementation would enable ray-traced reflections on wet pavement showing accurate mirror images of neon signs with proper distortion and falloff, ray-traced shadows from multiple colored light sources that blend realistically, and ray-traced translucency for glass storefronts. Unity's HDRP would provide similar capabilities through DXR (DirectX Raytracing), but might require more granular configuration of ray budget parameters and denoising settings to achieve equivalent visual quality at comparable performance ⁷⁸.

Nanite Virtualized Geometry

Nanite is Unreal Engine 5's virtualized geometry system that renders billions of polygons by streaming and processing only visible detail, eliminating traditional polygon budgets and the need for manual LOD creation ³. Unity currently lacks a direct equivalent, relying on traditional level-of-detail systems.

Example: When importing a photogrammetry-scanned rock cliff containing 500 million polygons into Unreal Engine 5 with Nanite enabled, the asset renders in real-time without manual decimation or LOD creation, automatically streaming appropriate detail levels based on screen-space pixel coverage. The same asset imported into Unity would require an artist to manually create multiple LOD levels (perhaps 500M, 50M, 5M, and 500K polygon versions), configure LOD transition distances, and potentially use texture atlasing to maintain visual quality at distance—a process requiring several hours of technical art work ³.

Material Systems

Both engines utilize node-based material editors for creating complex, layered materials. Unreal's Material Editor is deeply integrated with its rendering pipeline, offering extensive built-in features like parallax occlusion mapping, subsurface scattering, and clear coat layers ¹⁰. Unity's Shader Graph provides flexibility but often requires more manual configuration ⁶.

Example: Creating a photorealistic human skin material in Unreal Engine involves using the built-in subsurface scattering profile with pre-roll parameters, connecting RGB texture maps for diffuse, specular, and roughness, and utilizing the clear coat layer for oil/moisture on skin surfaces. In Unity's Shader Graph for HDRP, achieving equivalent skin rendering requires manually implementing the subsurface scattering calculations using custom function nodes with HLSL code, carefully managing the diffusion profile asset, and potentially writing custom lighting models to match Unreal's out-of-the-box quality ⁶¹⁰.

Post-Processing Stacks

Post-processing applies cinematic effects including depth of field, motion blur, bloom, color grading, and ambient occlusion. Unreal's post-processing is tightly integrated and often requires less configuration, while Unity's Volume framework in HDRP provides granular control with profile-based overrides ².

Example: For a cinematic sequence in a narrative game, an Unreal Engine artist would place a Post Process Volume in the scene, enable cinematic depth of field with a focal distance of 300 units and aperture of f/2.8, apply a LUT-based color grade exported from DaVinci Resolve, and adjust bloom intensity to 0.675 for subtle highlights. In Unity HDRP, the same effect requires creating a Volume Profile asset, adding override components for Depth of Field (setting focus distance and aperture), Color Curves (or importing the LUT), and Bloom, then assigning this profile to a Volume GameObject with appropriate blending distances ².

Lighting Workflows

Scene lighting establishes the visual foundation for photorealism through primary light sources, environment lighting, and indirect illumination. The workflow differs significantly between engines based on their GI solutions ¹⁴.

Example: Lighting a photorealistic forest scene in Unreal Engine 5 begins with placing a Directional Light for sunlight (intensity 10 lux, color temperature 5500K), adding an HDRI skybox for environment lighting, and enabling Lumen with default settings—indirect lighting and reflections calculate automatically in real-time. The same scene in Unity HDRP requires placing a Directional Light with similar parameters, assigning an HDRI to the sky, configuring Adaptive Probe Volumes throughout the forest with higher density near clearings and lower density in dense foliage, baking static lightmaps for non-moving trees using the Progressive GPU Lightmapper, and setting up reflection probes at key locations to capture environment reflections ¹⁴.

Applications in Game Development and Beyond

Architectural Visualization

Both engines serve architectural visualization, where photorealism directly impacts client decision-making and project approval. Unreal Engine's real-time ray tracing and Lumen provide immediate visual feedback during design iterations ¹⁷. Unity's HDRP with baked lighting offers stable performance for VR walkthroughs on mid-range hardware.

Example: An architectural firm creating an interactive presentation of a luxury residential development uses Unreal Engine 5 with Lumen and hardware ray tracing. Clients explore the space in real-time, adjusting material finishes (marble vs. granite countertops) and lighting scenarios (daytime vs. evening) while maintaining photorealistic quality. The ray-traced reflections accurately show how the pool water reflects the surrounding landscape, and Lumen dynamically updates indirect lighting as the sun position changes throughout the virtual day ¹⁷.

Automotive Configurators

Automotive manufacturers use photorealistic rendering for online vehicle configurators, allowing customers to visualize customization options. The material accuracy for automotive paint, chrome, leather, and glass is critical for purchase decisions ¹⁰¹¹.

Example: A major automotive manufacturer develops a web-based configurator using Unity HDRP, targeting broad hardware compatibility. The system uses pre-baked lightmaps for the showroom environment combined with real-time ray-traced reflections on the vehicle's paint surface. When a customer selects "Midnight Blue Metallic" paint, the PBR material system accurately renders the metallic flakes' sparkle under the showroom lighting, while ray-traced reflections show the environment accurately mirrored in the curved body panels. The configurator runs at 60fps on laptops with RTX 2060 GPUs ⁸¹¹.

Virtual Production for Film and Television

Unreal Engine dominates virtual production workflows, used extensively in film and television through LED wall integration and real-time compositing ¹². Unity has made inroads with tools like Unity Forma, but Unreal's ecosystem maturity provides significant advantages.

Example: A television production uses Unreal Engine for virtual production on an LED volume stage, rendering photorealistic alien landscapes in real-time as actors perform. The engine renders at 90fps to match the camera's shutter speed, with Nanite handling the highly detailed terrain geometry (billions of polygons) and Lumen providing accurate indirect lighting that matches the LED wall's illumination on the actors. The virtual camera system tracks the physical camera's position and lens parameters, maintaining perfect perspective and depth of field alignment between the real actors and virtual environment ³¹².

High-End Gaming Experiences

AAA game studios leverage photorealism to enhance narrative immersion and emotional engagement in story-driven titles. The balance between visual fidelity and performance across console and PC platforms requires careful optimization ⁷⁸.

Example: A narrative-driven action game targeting PlayStation 5 and high-end PC uses Unreal Engine 5's hybrid rendering approach. Indoor environments use Lumen's software ray tracing for global illumination, maintaining 60fps on console hardware. Outdoor scenes combine Nanite for terrain and vegetation geometry with traditional rendering for characters and dynamic objects. On PC with RTX 4080 GPUs, the game enables full hardware ray tracing for reflections, shadows, and global illumination, delivering near-photorealistic quality at 4K resolution with DLSS upscaling ⁷.

Best Practices

Establish Technical Specifications Early

Define target platforms, performance budgets, and visual benchmarks at project inception through a comprehensive technical specification document. This prevents scope creep and ensures team alignment on achievable quality levels.

Rationale: Photorealistic features are computationally expensive, and retrofitting optimization late in production is significantly more costly than designing for performance from the start. Clear specifications enable informed asset creation decisions and prevent wasted effort on unsustainable visual targets.

Implementation Example: A studio beginning a cross-platform project creates a technical specification document defining: target platforms (PS5, Xbox Series X, PC with RTX 3070 minimum), performance targets (4K/30fps on consoles, 1440p/60fps on PC), rendering features (Lumen on consoles, hardware ray tracing on PC), texture budgets (8K for hero assets, 4K for environment), and polygon budgets (Nanite for static geometry, 50K triangles for characters). This document guides all asset creation, with regular profiling sessions validating adherence to budgets ³⁷.

Use Physically Accurate Lighting Values

Utilize real-world measurement units (lumens, candelas, color temperature in Kelvin) rather than arbitrary multipliers to ensure consistent, physically plausible lighting across scenes and maintain PBR workflow integrity ⁹¹⁰.

Rationale: Physically accurate values ensure materials respond correctly to lighting, prevent over-exposure or under-exposure issues, and facilitate collaboration between artists by providing objective reference points. This approach also simplifies lighting adjustments when changing time-of-day or environment conditions.

Implementation Example: When lighting an interior office scene in Unreal Engine, an artist references real-world lighting data: the sun (Directional Light) is set to 120,000 lux with color temperature 5500K, overhead fluorescent lights (Rect Lights) are set to 400 lumens each with color temperature 4000K, and desk lamps (Point Lights) are set to 800 lumens with 2700K warm white. These values automatically produce correct exposure when using the engine's auto-exposure system, and materials render with accurate brightness relationships ¹¹⁰.

Implement Continuous Profiling

Profile performance throughout development rather than treating optimization as a final phase, using engine-specific profiling tools to identify bottlenecks and validate optimization strategies ²⁷.

Rationale: Early identification of performance issues prevents architectural problems that become exponentially more expensive to fix later. Continuous profiling enables data-driven decisions about quality settings and helps teams understand the performance cost of specific features.

Implementation Example: A Unity HDRP project establishes a weekly profiling routine where technical artists use the Frame Debugger to analyze a representative scene. They identify that ray-traced reflections consume 8ms per frame (27% of the 30ms budget), screen-space global illumination adds 4ms, and shadow rendering takes 6ms. Based on this data, they reduce ray tracing samples from 4 to 2 per pixel (saving 4ms with minimal visual impact), optimize shadow cascade distances, and implement dynamic resolution scaling that reduces rendering resolution by 15% during complex scenes, maintaining target frame rates ²⁸.

Leverage Material Instancing and Atlasing

Reduce draw calls and state changes through material instancing (creating parameter variations of master materials) and texture atlasing (combining multiple textures into single larger textures) ¹⁰¹¹.

Rationale: Draw calls and material state changes are significant performance bottlenecks, particularly on console hardware. Material instancing allows visual variety while maintaining rendering efficiency, and texture atlasing reduces texture binding overhead.

Implementation Example: An Unreal Engine project creates a master material for all building exteriors with exposed parameters for color tint, roughness variation, and normal map intensity. Artists create 50 material instances from this master, each with unique parameter values for different buildings. The renderer batches these instances efficiently since they share the same base material and shader. Additionally, all building trim textures (window frames, door frames, cornices) are combined into a single 4K atlas, reducing texture binds from 15 per building to 1, improving rendering performance by 23% ¹⁰.

Implementation Considerations

Engine Selection Based on Project Requirements

Choose the appropriate engine based on target platforms, team expertise, visual fidelity requirements, and production timeline. Unreal Engine excels for high-fidelity single-platform experiences and virtual production, while Unity's flexibility suits multi-platform projects requiring scalability ²⁵¹².

Example: A studio developing a photorealistic VR training simulation for industrial equipment maintenance selects Unity HDRP because the project requires deployment across Meta Quest Pro (mobile hardware), PC VR (high-end), and eventually WebXR (browser-based). Unity's URP-to-HDRP scalability allows maintaining a single codebase with quality tiers: Quest Pro uses URP with baked lighting and simplified materials (90fps), PC VR uses HDRP with ray-traced reflections and Adaptive Probe Volumes (90fps at higher resolution), and WebXR uses URP with aggressive optimization (60fps). Unreal Engine's less mature WebXR support and more rigid rendering pipeline would complicate this multi-tier approach ²⁵.

Asset Pipeline and Tool Integration

Establish efficient asset pipelines integrating DCC tools (Blender, Maya, Substance Designer) with the chosen engine, considering format compatibility, automation opportunities, and team workflows ³⁶.

Example: A studio standardizes on Substance Designer for all material creation, exporting texture sets (albedo, normal, roughness, metallic, ambient occlusion) at multiple resolutions (8K, 4K, 2K, 1K). They create Python scripts that automatically import these textures into Unreal Engine, create material instances with correct texture assignments and parameter values, and generate LOD materials that swap to lower-resolution textures at distance. This automated pipeline reduces material setup time from 15 minutes per asset to 30 seconds, and ensures consistency across the project's 2,000+ unique materials ¹⁰.

Hardware Requirements and Scalability

Design scalability systems that gracefully degrade visual quality on lower-end hardware while maximizing fidelity on high-end systems, considering GPU capabilities, memory bandwidth, and storage speed ⁷⁸.

Example: An Unreal Engine 5 game implements a comprehensive scalability system with five quality presets. "Ultra" (RTX 4080+) enables full hardware ray tracing, Lumen at highest quality, Nanite for all geometry, and 4K rendering with DLSS Quality. "High" (RTX 3070) uses Lumen with software ray tracing, selective hardware ray tracing for reflections only, and 1440p with DLSS Balanced. "Medium" (GTX 1080) disables ray tracing entirely, uses baked lightmaps with screen-space reflections, reduces Nanite detail, and renders at 1080p. "Low" (GTX 1060) further reduces texture quality, disables Nanite (using traditional LODs), and employs dynamic resolution scaling. This system ensures the game runs on a wide hardware range while delivering photorealistic quality where possible ³⁷.

Team Training and Expertise Development

Invest in training or hiring specialists in technical art and rendering engineering, as photorealistic rendering requires deep expertise in shader programming, lighting theory, and performance optimization ⁹¹².

Example: A studio transitioning from Unity's Built-in Pipeline to HDRP for a photorealistic project allocates three months for team training. They send two senior technical artists to Unity's official HDRP training course, purchase comprehensive online training materials for the entire art team, and hire a rendering engineer with HDRP experience as a consultant for the first six months. The consultant establishes the project's rendering architecture, creates master materials and lighting templates, and conducts weekly knowledge-transfer sessions. This investment costs $75,000 but prevents an estimated six months of trial-and-error learning and technical debt ²⁶.

Common Challenges and Solutions

Challenge: Performance Optimization with Ray Tracing

Ray tracing delivers unparalleled visual quality but is computationally expensive, often consuming 40-60% of frame time and making real-time performance difficult to achieve, particularly on console hardware and mid-range PCs ⁷⁸. Memory bandwidth limitations further constrain ray tracing performance, as the technique requires accessing large amounts of geometry and texture data.

Solution:

Implement hybrid rendering approaches that selectively apply ray tracing to high-impact visual elements while using rasterized approximations elsewhere. In Unreal Engine, enable ray-traced reflections only on wet surfaces, glass, and metal materials using material-specific settings, while using screen-space reflections for other surfaces. Configure ray tracing to use 1-2 samples per pixel with temporal denoising rather than 4+ samples, reducing cost by 50-75% with minimal perceptible quality loss ⁷.

For Unity HDRP, use the ray tracing tier system to enable full ray tracing on high-end PCs while automatically falling back to screen-space techniques on lower-end hardware. Implement dynamic resolution scaling that reduces rendering resolution by 10-20% during complex scenes, then upscales using temporal anti-aliasing or DLSS/FSR. Profile using engine-specific tools to identify which ray-traced features provide the best visual return-on-investment for your specific scenes ⁸.

Challenge: Achieving Consistent Visual Quality Across Hardware

Photorealistic projects must run on diverse hardware configurations, from high-end RTX 4090 GPUs to console hardware and mid-range PCs, each with vastly different capabilities. Maintaining visual consistency while accommodating this range is technically and artistically challenging.

Solution:

Design a tiered quality system with carefully calibrated presets that maintain artistic intent across all tiers. Establish "visual pillars"—the 3-5 most important visual elements for your project (e.g., character lighting, environmental atmosphere, material detail)—and ensure these remain strong even at lower quality settings ²⁵.

Create a reference scene that represents your game's most visually complex moment and optimize it to run at target frame rates on your minimum-spec hardware. Use this scene as a benchmark throughout development. In Unreal Engine, leverage the built-in scalability system but customize it for your project's specific needs, potentially creating custom console variables that adjust multiple settings simultaneously. In Unity, create custom quality presets that modify HDRP settings, render scale, and asset LOD biases together ²⁷.

Test regularly on actual target hardware rather than relying solely on editor simulation, as real-world performance often differs significantly from profiler predictions.

Challenge: Long Iteration Times with Baked Lighting

While baked lighting provides excellent performance for static scenes, the baking process can take hours or even days for complex scenes, severely impacting iteration speed and artistic experimentation ⁴.

Solution:

Implement a progressive lighting workflow that combines fast preview bakes during iteration with high-quality final bakes. In Unity, use the Progressive GPU Lightmapper with reduced sample counts (32-64 samples) for preview bakes that complete in minutes, allowing artists to evaluate lighting composition and color relationships. Reserve high-quality bakes (1024+ samples) for milestone reviews and final builds ⁴.

For Unreal Engine projects requiring baked lighting (mobile or VR targets), consider using Lumen during development for instant feedback, then baking lightmaps only for final optimization passes. Structure scenes modularly so artists can bake individual rooms or areas rather than entire levels, reducing iteration time from hours to minutes ¹.

Establish a dedicated bake farm using cloud computing resources (AWS, Azure) or spare workstations that run overnight bakes, ensuring artists always have recent high-quality bakes available without blocking their workstations.

Challenge: Material Authoring Complexity

Creating photorealistic materials requires deep understanding of physical material properties, shader networks, and texture authoring, presenting a steep learning curve for artists transitioning from traditional game art workflows ⁹¹⁰¹¹.

Solution:

Develop a comprehensive material library with well-documented master materials covering common material types (metals, plastics, wood, concrete, fabric, organic materials). Each master material should expose intuitive parameters with clear descriptions and valid value ranges. In Unreal Engine, create material functions for common operations (detail normal blending, parallax occlusion, triplanar projection) that artists can reuse across projects ¹⁰.

Establish material creation guidelines documenting physically accurate parameter ranges: metals have metallic=1.0 and albedo values between 180-240 (sRGB), dielectrics have metallic=0.0 and albedo values between 50-240, roughness ranges from 0.0 (mirror) to 1.0 (completely diffuse). Provide reference photographs and measured material data from resources like the MERL BRDF Database ⁹¹¹.

Invest in Substance Designer training and create procedural material templates that generate all required texture maps from high-level parameters. This allows artists to create material variations quickly while maintaining physical accuracy. For Unity Shader Graph, create custom nodes that encapsulate complex calculations, presenting simplified interfaces to artists ⁶¹¹.

Challenge: Managing Asset Storage and Streaming

Photorealistic assets require high-resolution textures (4K-8K) and detailed geometry, creating massive storage requirements and streaming challenges. A single photorealistic environment can exceed 50GB of source assets, causing version control, build time, and runtime streaming issues ³.

Solution:

Implement aggressive texture compression using modern formats (BC7 for color, BC5 for normals, BC4 for single-channel) that maintain visual quality while reducing memory footprint by 75-85%. Use virtual texturing systems—Unreal's Virtual Texture system or Unity's Streaming Virtual Texturing—that stream texture data on-demand, allowing use of 8K+ textures without loading entire mipmap chains into memory ³.

For geometry, leverage Unreal Engine 5's Nanite which automatically handles streaming and LOD, or implement custom streaming systems in Unity that load/unload mesh LODs based on camera distance and available memory. Structure assets modularly so environments load in chunks rather than all at once ³.

Adopt a hybrid storage strategy: store source assets (uncompressed textures, high-poly models) in cloud storage (AWS S3, Google Cloud Storage) with local caching, while keeping only compressed, engine-ready assets in version control. Use asset processing pipelines that automatically compress and optimize assets during import, preventing uncompressed assets from entering the project ¹⁰.

References

1. Epic Games. (2022). Lumen Global Illumination and Reflections in Unreal Engine. https://docs.unrealengine.com/5.0/en-US/lumen-global-illumination-and-reflections-in-unreal-engine/
2. Unity Technologies. (2025). High Definition Render Pipeline. https://docs.unity3d.com/Packages/com.unity.render-pipelines.high-definition@latest
3. Epic Games. (2022). Nanite Virtualized Geometry in Unreal Engine. https://docs.unrealengine.com/5.0/en-US/nanite-virtualized-geometry-in-unreal-engine/
4. Unity Technologies. (2023). Adaptive Probe Volumes: Sky Occlusion and Streaming. https://blog.unity.com/technology/adaptive-probe-volumes-sky-occlusion-and-streaming
5. Epic Games. (2021). Unreal Engine 5 is Now Available in Early Access. https://www.unrealengine.com/en-US/blog/unreal-engine-5-is-now-available-in-early-access
6. Unity Technologies. (2025). Shader Graph. https://docs.unity3d.com/Manual/shader-graph.html
7. Epic Games. (2022). Ray Tracing in Unreal Engine. https://docs.unrealengine.com/5.0/en-US/ray-tracing-in-unreal-engine/
8. Unity Technologies. (2019). Ray Tracing in Unity 2019.3. https://blog.unity.com/technology/ray-tracing-in-unity-2019-3
9. Game Developer. (2023). Physically Based Rendering and You Can Too. https://www.gamedeveloper.com/programming/physically-based-rendering-and-you-can-too
10. Epic Games. (2022). Physically Based Materials in Unreal Engine. https://docs.unrealengine.com/5.0/en-US/physically-based-materials-in-unreal-engine/
11. Unity Technologies. (2025). Standard Shader Material Parameters. https://docs.unity3d.com/Manual/StandardShaderMaterialParameters.html
12. Epic Games. (2023). Forging New Paths for Game Developers on the State of Unreal. https://www.unrealengine.com/en-US/blog/forging-new-paths-for-game-developers-on-the-state-of-unreal