Rtgi 0.17.0.2

RTGI 0.17.0.2 (Ray Traced Global Illumination) is a beta version of the popular screen-space ray tracing shader developed by Pascal Gilcher (also known as "Marty McFly") for the ReShade post-processing injector. Released on October 30, 2020, this specific version served as a refinement of the shader's core lighting and performance algorithms before it was rebranded under the iMMERSE line of effects. Key Features of RTGI 0.17.0.2

Screen Space Ray Tracing (SSRTGI): Unlike hardware-native ray tracing (RTX), this shader uses information from the game's depth buffer to calculate how light bounces and shadows fall within the visible frame.

Extended Ray Length Multiplier: This version introduced or improved the ability to extend the distance rays travel, allowing for more realistic light transmission in larger open spaces.

Performance Improvements: Version 0.17.0.2 focused on optimizing the quality-to-performance ratio, making it more viable for players without top-tier RTX hardware.

Image-Based Lighting: Enhanced how the shader interprets existing colors on screen to generate realistic "bounced" light and ambient occlusion. How to Access and Use

RTGI 0.17.0.2 was originally distributed as an exclusive early-access release for supporters on the Pascal Gilcher Patreon.

Title: The Patch Notes of the House

Version: 0.17.0.2 Changelog: Fixed specular bleed on metallic surfaces. Improved indirect lighting stability near emissive sources.

Elara pressed F9.

The screen flickered, and the hallway changed.

For three months, she had lived inside the simulation of her grandmother’s house—the one that burned down in 1997. She had rebuilt it pixel by pixel from old VHS tapes and fading Polaroids. But light was a liar. In the old version, the sun would leak through the kitchen windows and paint the linoleum an angry, artificial yellow. Shadows hid in corners like sharp knives.

Then she installed RTGI 0.17.0.2.

She walked the avatar—her own ghost—down the digital hallway. The old bug, specular bleed, was gone. Previously, the white trim of the doorframe would glow like a radioactive strip, smearing its brightness onto the flowered wallpaper. Not anymore. The light touched the trim, bounced once, and fell gently onto the roses. It felt heavy. Real.

She entered the living room.

In version 0.16.8, the stained-glass lamp on the end table would create a puddle of red on the carpet, but nothing else. A flat, dead puddle. Now, she held her breath. The red light splashed onto the carpet, then bloomed—a soft, pink echo bleeding onto the leg of the piano, a warm orange kiss on the spine of a book. Indirect lighting stability. The patch notes had called it a “fix.” Elara called it a resurrection.

She turned the avatar toward the fireplace. In reality, the fire had been the death of the house. In the simulation, she had never dared to turn it on. The emissive source—the flames—would always crash the shader. The logs would read: Unstable radiance cache. But version 0.17.0.2 had a new line: Improved stability near emissive sources.

She clicked the fireplace.

The logs chattered:

[RTGI] Building radiance cache... [RTGI] Bounce 1/2/3... stable. [RTGI] No overflow detected.

The firelight danced. It didn’t just illuminate the bricks. It reached out like fingers, touching the brass of the candlesticks, warming the white lace doily, and most impossibly—casting a faint, flickering glow onto the face of the grandfather clock.

That clock had never received light before. Not in any version.

Elara leaned into her monitor. The room behind her was dark. Her real apartment had no indirect light, no bounces, just a single harsh bulb over the sink. But inside the screen, inside RTGI 0.17.0.2, her grandmother’s house was breathing.

She whispered to the patch notes: “You fixed the bleed. You stabilized the fire.”

And for the first time since 1997, the light felt like memory instead of math.

B. Depth Buffer Clarity

A persistent issue with screen-space ray tracing is the "halo effect" around objects near the edge of the screen. Version 0.17.0.2 implements a Mipmap-based depth threshold. This reduces edge flickering by 40%, as measured by community benchmarks.

Is RTGI 0.17.0.2 Worth the Upgrade?

Absolutely, if you are a current subscriber. The stability improvements alone justify the update.

However, a note of caution: RTGI is not a miracle worker. Because it is a post-process effect (it only sees the 2D final image and the depth buffer), it cannot handle data that isn't on the screen. If a light source is behind the camera, RTGI cannot bounce it. For that, you need native engine raytracing (like Cyberpunk 2077's Psycho mode). rtgi 0.17.0.2

That said, for 95% of third-person and first-person games released before 2018, RTGI 0.17.0.2 is currently the best way to experience real-time global illumination without rewriting the game engine.

2. Prerequisites

• ReShade 5.x or 6.x with full depth buffer access
• RTGI 0.17.0.2.fx file (plus its texture and include dependencies)
• A game that provides usable depth buffer (most 3D games, except many Unity titles without workarounds)

⚠️ Do not use with older ReShade 4.x – missing math functions.

7. Known Issues and Community Fixes

No software is perfect. RTGI 0.17.0.2 has a few quirks.

Issue 1: Depth Buffer Access (The "Black Screen" bug)

• Symptom: Everything renders as black or white.
• Cause: The game uses a reversed depth buffer or a custom anti-aliasing method (e.g., TAA).
• Fix: In Reshade settings, go to Add-ons > Depth Buffer and check Copy depth buffer before clear operations and set Depth buffer detection to Reversed + MSAA.

Issue 2: Flickering in Rain or Particles

• Symptom: Ray traced lighting flickers violently during rain or fog.
• Cause: Screen-space effects cannot accurately ray-march through transparent particles.
• Fix: Reduce Ray Length to 0.4 and increase Noise Threshold to 0.08.

Issue 3: Conflict with NVIDIA DLSS 3.5

• Symptom: Ghosting trails behind moving NPCs.
• Cause: DLSS 3.5’s ray reconstruction clashes with RTGI’s temporal denoiser.
• Fix: Use either DLSS or RTGI, not both. Or disable Temporal Denoiser inside RTGI 0.17.0.2.

Post-Install Configuration

• Bind a toggle key (e.g., F11) to RTGI so you can compare on/off.
• Set Quality to High for most games. Ultra is for static screenshots only.

10. Conclusion

RTGI 0.17.0.2 is more than a version number; it is a testament to the power of open-source rendering research. For gamers stuck with older hardware or frustrated by the slow adoption of ray tracing in legacy games, this update delivers tangible visual improvements—smoother motion, fewer artifacts, and better performance scaling.

Should you upgrade from 0.16.x? Yes. The temporal stability alone is worth the 5% additional performance cost.

Should you upgrade from 0.17.0.1? If you experience ghosting or edge halos, absolutely. If not, the differences are subtle but present.

To install RTGI 0.17.0.2, support the developer via Patreon, and enjoy your games bathed in realistic, dynamic global illumination. Your eyes—and your Steam backlog—will thank you.

Have you tested RTGI 0.17.0.2 in a specific game? Share your preset in the comments below. For more deep dives into ReShade shaders, subscribe to our newsletter.

Here are a few post ideas related to RTGI 0.17.0.2 (Ray Traced Global Illumination), a popular ReShade shader by Pascal Gilcher (Marty McFly).

Since this specific version (0.17.0.2) is a classic beta build often used for games like (with NVE), Horizon Zero Dawn Alien: Isolation RTGI 0

, these drafts focus on the "before and after" impact and setup tips.

Option 1: The "Visual Upgrade" (Best for Instagram/X/Reddit) Bringing Next-Gen Lighting to [Game Name] 🔦✨ Checking out the difference RTGI 0.17.0.2

makes in [Game Name]. Even though it's a post-processing layer, the way it handles bounced light and micro-shadows completely changes the atmosphere. Pascal Gilcher’s Ray Traced Global Illumination (RTGI) 0.17.0.2 Beta

Adds depth to indoor scenes and realistic sunlight bounce that the original engine misses.

Is the performance hit worth the eye candy? For virtual photography, it’s a no-brainer. 📸

#ReShade #RTGI #PCGaming #VirtualPhotography #GraphicsMod #MartyMcFly

Option 2: The "Tech/Troubleshooting" (Best for Discord/Forums/Reddit)

Quick Tip: Setting up RTGI 0.17.0.2 with ReShade 4.9+ 🛠️ If you're still rocking the

build of RTGI for specific mod compatibility (like older NVE presets), make sure your paths are solid. Common Fixes for this version: Shaders Not Found: Ensure your folders from the RTGI zip are placed directly into your reshade-shaders directory. Depth Buffer Issues:

If the lighting looks "flat" or ignores objects, check your Depth tab in the ReShade menu. You might need to "Copy depth before stencil clear" or flip the depth axis in the global settings. Performance:

This build is a GPU heavy-hitter. Try lowering the "Ray Length" or "Amount" if your frames are tanking.

Anyone else still prefer the look of this specific beta build over the newer versions? Option 3: Short & Punchy (Best for Threads/X) Nothing beats that first time you toggle RTGI 0.17.0.2 on a classic game and suddenly the world has actual

It’s not just "fake" ray tracing; the global illumination bounce in this build is still legendary for screen-space effects. Link to Pascal's Patreon for the latest updates. #Gaming #PCMR #RTGI #Mods Tips for your post: The "Before/After" Shot: If posting on Reddit (like Title: The Patch Notes of the House Version: 0

), a slider or side-by-side image is essential to show off the depth buffer and lighting effects. Credit the Author: Always mention Pascal Gilcher (Marty McFly), as RTGI is a Patreon-funded Compatibility:

Mention which game you are using it for, as setup varies wildly between engines (DirectX 11 vs. Vulkan). specific game