PT Fog – Real-Time Volumetric Fog Shader

for ReShade

Built for Performance

The First true volumetric fog shader for reshade

Zenteon+: PT Fog is a volumetric fog shader that brings realistic, dynamic fog effects to any DX10+ game through ReShade. It uses a fast screen-space path tracing method to simulate how light moves through fog in the real world. PT Fog adds mood, depth, and atmosphere—without heavily impacting performance.

Whether you're enhancing a moody mountain scene or adding glow to city lights, this fog shader gives you cinematic results with just a few tweaks.

What is Zenteon+: PT Fog?

Many games use basic depth-based fog that feels flat and disconnected from lighting, or volumetric fog that only handles sunlight. PT Fog changes that by simulating real volumetric fog using screen-space path tracing. It collects and absorbs light in a way that feels natural—creating fog that actually interacts with your scene.

The shader includes a built-in noise filter to smooth out flicker and reduce grain. While it doesn’t create detailed volumetric shadows, PT Fog handles occlusion well, which helps prevent light from bleeding through objects unrealistically. The result is a smooth, cinematic fog that blends right into the environment.

Why Use Zenteon+: PT Fog?

PT Fog is the only real-time volumetric fog shader available for ReShade, giving you realistic fog effects without a big performance hit. It runs in just 2.6 ms on an RTX 3050 laptop GPU, making it a great fit for even lower mid-range systems.

Perfect for:

  • Virtual photographers capturing atmospheric shots

  • Modders looking to dynamically improve atmosphere

  • Anyone wanting to add immersive fog shader effects with minimal setup

You can control fog density, color, ambient light, and filtering, making it easy to match your creative vision.

Key Features

Real-Time Volumetric Fog

Simulates realistic fog using fast screen-space path tracing.

Natural Light Blending

Uses screen-space color data to blend fog naturally with your scene lighting.

Adjustable Noise Reduction

Includes built-in adjustable filtering to reduce flicker and visual noise.

Low Performance Cost

Runs at just ~3ms on modern low-end GPUs.

Try Zenteon+: PT Fog Today

PT Fog gives your games a whole new layer of atmosphere. Whether you're going for eerie, dreamy, or dramatic, this fog shader helps build the mood with volumetrics and clean, stable visuals—all while keeping performance in check.