Colors
Modrinth
Shader
Oct-Path
Minecraft shaderpack with Octree-like acceleration structure for its raytracing
Minecraft product info
Important product information
Compatibility, Minecraft versions, loaders, and external source data.
Type
Shader
Access
Free
Latest version
1.23
Downloads
20 791
Loaders / Platforms
optifine
Minecraft versions
1.16.5 – 1.20.2
1.20.4
1.20.6 – 1.21.1
1.21.3 – 1.21.4
1.21.11
Categories
path-tracing
realistic
screenshot
Description
Detailed information
## About
Oct-Path is a Minecraft shaderpack based on Octray Rewrite, an open source ray tracing shader developed by BruceKnowsHow.
"Octray Rewrite" is an innovative ray tracing shader that supports unlimited render distance, i.e., raytracing the entire render distance (64x chunks, 384 height), and allows casting long distance rays at high speeds by implementing an Octree-like acceleration structure for ray tracing.
While "Octray Rewrite" has an excellent ray tracing mechanism, it was incomplete because it omitted drawing entities and omitted translucent processing including water, and so on. Therefore, Oct-Path was born to take advantages of this shader while not interfering with Minecraft gameplay.
## Requirements
- OptiFine 1.16.5 or newer (Iris is not supported)
- Graphics card supporting OpenGL 4.0 or later (newer ones are preferable)
## Installation
As a precondition, OptiFine is installed
- Minecraft > Video Settings... > Shaders... > Shaders Folder
so the shaderpacks folder is opened.
- Place the downloaded Oct-Path zip file in the shaderpacks folder. (No need to unzip the zip file)
- Select Oct-Path from the Shaders list.
## Special Thanks
Special thanks to BruceKnowsHow who developed "[Octray Rewrite](https://github.com/BruceKnowsHow/OctrayRewrite)".
"Octray Rewrite" has been declared open source by the author, and moreover, BruceKnowsHow has also given his approval when I released Oct-Path, saying "Yep, you are free to release it".
Product gallery
Project images
Screenshots and images from the original Modrinth page.
Oct-Path_sample21_20251203
Oct-Path image sample (48 chunks)
Oct-Path_sample23_20251203
Oct-Path image sample
Oct-Path_sample22_20251203
Oct-Path image sample
Oct-Path_sample31_20260704
Oct-Path image sample
Oct-Path_sample34_20260715
Oct-Path image sample
Oct-Path_sample29_20251203
full moon and moonlight shadow
Oct-Path_sample30_20260704
underwater at Lukewarm Ocean
Oct-Path_sample28_20251203
nether portal at The Nether
Oct-Path_sample20_20250901
trapdoor with light leaking through transparent areas of the texture by alpha testing
Oct-Path_sample27_20251203
shadow of Leaves with sea lantern as light source
Oct-Path_sample26_20251203
transmitted light tinting through colored stained glass with sea lantern as light source
Oct-Path_sample25_20251203
translucent shadows through colored stained glass
Oct-Path_sample32_20260704
POM and POM Silhouette
Oct-Path_sample33_20260704
POM (and POM Silhouette) functions much more stably compared to the original Octray Rewrite.
Change log
Project versions
Published versions and original Modrinth files.
1.23
Current
Release
16.07.2026
Oct-Path v1.23
Supported Minecraft versions
1.16.5
1.17
1.17.1
1.18
1.18.1
1.18.2
1.19
1.19.1
1.19.2
1.19.3
1.19.4
1.20
1.20.1
1.20.2
1.20.4
1.20.6
1.21
1.21.1
1.21.3
1.21.4
1.21.11
Loaders / Platforms
optifine
Show changes
- Fixed an issue where parts of grass block shadows would become transparent under certain conditions, such as when using OptiFine 1.21.11
- Added ray tracing support for Copper Torch, Dirt Path, and Farmland (including emission for Copper Torch)
- Changed buffer resources used for POM Silhouette to facilitate future development
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7.38 MB
1.22
Release
04.07.2026
Oct-Path v1.22
Supported Minecraft versions
1.16.5
1.17
1.17.1
1.18
1.18.1
1.18.2
1.19
1.19.1
1.19.2
1.19.3
1.19.4
1.20
1.20.1
1.20.2
1.20.4
1.20.6
1.21
1.21.1
1.21.3
1.21.4
Loaders / Platforms
optifine
Show changes
- Fixed an issue where texture rendering on non-cubic blocks (such as slabs, stairs, and so on) would break down when using POM
- Fixed an issue where self-occlusion and shadowing calculations during POM processing were incorrect for non-cubic blocks, such as slabs and stairs, when using POM
- Improved POM Silhouette overall (POM Silhouette: shows the realistic shape on the outline of blocks using POM information)
- POM silhouette was originally designed to apply the shape only to block outline edges that were not adjacent to anything; however, due to imperfect adjacency detection for some blocks, POM silhouette was indiscriminately applied to edges adjacent to other blocks as well, resulting in hollow areas with missing rendering along parts of the block outline; fixed this issue and normalized the outlines
- Fixing the issue where POM texture rendering was broken enabled the application of POM silhouettes to stair blocks; however, since stair blocks are composed of textures smaller than the block size itself, this resulted in the POM silhouette being applied excessively, so fixed this by implementing logic specific to stairs
- The strange transparent lines (hollow areas with missing rendering) that consistently appeared at chunk boundaries no longer appear, at least while the player is standing still
- Transparent lines may still appear to flicker when the player is moving, though this is the limit of current improvements, so it cannot be helped unfortunately
- Fixed an issue where part of the voxelization for stairs was ineffective
- Even in outdoor daytime, there were instances where water surfaces, underwater areas, and rain particles appeared unnaturally bright and stood out in scenes that were actually dark due to factors such as terrain; therefore, adjusted them to achieve a more natural and appropriate brightness for the water
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7.38 MB
1.21
Release
07.12.2025
Oct-Path v1.21
Supported Minecraft versions
1.16.5
1.17
1.17.1
1.18
1.18.1
1.18.2
1.19
1.19.1
1.19.2
1.19.3
1.19.4
1.20
1.20.1
1.20.2
1.20.4
1.20.6
1.21
1.21.1
1.21.3
1.21.4
Loaders / Platforms
optifine
Show changes
- Completely fixed the issue where noise, flickering, and unnatural brightness were noticeable when viewed through translucent blocks such as water and stained glass
- Copper bulbs and furnaces are now supported emission with custom emission colors
- Fixed an issue where the setting for adjusting the intensity of transmitted light tinting through translucent blocks such as stained glass was not set to the appropriate intensity
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7.37 MB
1.20
Release
03.09.2025
Oct-Path v1.20
Supported Minecraft versions
1.16.5
1.17
1.17.1
1.18
1.18.1
1.18.2
1.19
1.19.1
1.19.2
1.19.3
1.19.4
1.20
1.20.1
1.20.2
1.20.4
1.20.6
1.21
1.21.1
1.21.3
1.21.4
Loaders / Platforms
optifine
Show changes
- Added the moon to the night sky, along with moonlight as light source (including a moon phase system)
- Nether portal is now supported emission, and has geometry definition for raytracing
- Stairs now have accurate geometry definition for raytracing
- Adjusted raindrop color to be a bit more subdued
- The change of sky color when rainy is now correctly applied in reflections
- Fixed an issue where some textures used by ray tracing did not apply as intended when using resource packs with resolutions other than 16x
- When the weather is raining, the brightness of the sun, moon, and stars will be darker
- Comprehensively revised underwater visibility
- Fixed an issue where water colors were not being applied properly at depths where lightmap became 0 in water
- Adjusted the contrast looking up from underwater through the water surface
- Adjusted the brightness of player's hands or held items in water to match the surrounding scene
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7.37 MB
1.11
Release
27.06.2025
Oct-Path v1.11
Supported Minecraft versions
1.16.5
1.17
1.17.1
1.18
1.18.1
1.18.2
1.19
1.19.1
1.19.2
1.19.3
1.19.4
1.20
1.20.1
1.20.2
1.20.4
1.20.6
1.21
1.21.1
1.21.3
1.21.4
Loaders / Platforms
optifine
Show changes
- The accumulation of ray tracing by temporal filter is now capped
- This not only improves the responsiveness of the ray tracing rendering to changes in brightness, but also significantly reduces the noise caused by ray tracing
- Sun's orbit has been corrected from rising in the south and setting in the north to rising in the east and setting in the west
- Fixed the stars that were fairly visible even during the day to only appear during the night
- By correcting the calculation of voxelization coordinates, completely prevented the defect that things drawn by ray tracing (such as shadows) become doubled or disappear under certain conditions
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7.36 MB
1.10
Release
06.06.2025
Oct-Path v1.10
Supported Minecraft versions
1.16.5
1.17
1.17.1
1.18
1.18.1
1.18.2
1.19
1.19.1
1.19.2
1.19.3
1.19.4
1.20
1.20.1
1.20.2
1.20.4
1.20.6
1.21
1.21.1
1.21.3
1.21.4
Loaders / Platforms
optifine
Show changes
- Added translucent shadows and transmitted light tinting to translucent blocks such as stained glass
- Added support for alpha-testing for texture in raytracing
- Added support for doors and trapdoors with geometry
- Added support for entity colors, such as when they are injured
- Color of objects on land when viewed from underwater have been adjusted to the correct intensity by calculating underwater depth more accurately
- Adjusted rain particle color to be more consistent between terrain and sky
- Fixed incorrect geometry mapping of wall button
- Fixed horizontal band-like noise that appeared on parts of the screen when the water surface took up most of the screen
- Fixed sky color change in overworld when weather is rainy also affecting the sky in the Nether and End
- When the weather is raining, the outdoor brightness will be slightly darker
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7.36 MB
1.03
Release
11.04.2025
Oct-Path v1.03
Supported Minecraft versions
1.16.5
1.17
1.17.1
1.18
1.18.1
1.18.2
1.19
1.19.1
1.19.2
1.19.3
1.19.4
1.20
1.20.1
1.20.2
1.20.4
1.20.6
1.21
1.21.1
1.21.3
1.21.4
Loaders / Platforms
optifine
Show changes
- Fixed an issue where ray tracing did not work in some areas at the bottom of the screen when the bottom of the screen was the water surface
- Added support for many missing cube and slab blocks
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7.35 MB
1.02
Release
02.04.2025
Oct-Path v1.02
Supported Minecraft versions
1.16.5
1.17
1.17.1
1.18
1.18.1
1.18.2
1.19
1.19.1
1.19.2
1.19.3
1.19.4
1.20
1.20.1
1.20.2
1.20.4
1.20.6
1.21
1.21.1
1.21.3
1.21.4
Loaders / Platforms
optifine
Show changes
- Added support for some emissive blocks (not all are complete yet)
- Stained glass now properly displays its texture instead of just displaying a single color
- Fixed issue where water wavering would incorrectly affect other translucent blocks at the border between water and other translucent blocks
- Fixed flickering of water surface at long distances
- Fixed issue where extraneous texture atlases would flicker when particles overlapped water
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7.35 MB
1.01
Release
19.03.2025
Oct-Path v1.01
Supported Minecraft versions
1.16.5
1.17
1.17.1
1.18
1.18.1
1.18.2
1.19
1.19.1
1.19.2
1.19.3
1.19.4
1.20
1.20.1
1.20.2
1.20.4
1.20.6
1.21
1.21.1
1.21.3
1.21.4
Loaders / Platforms
optifine
Show changes
- Improved water
- Water depth can now be calculated correctly
- Brightness now matches the surroundings properly
- The reflection of the sky was too subtle, so made it a bit stronger
- Fixed one of the button mappings was ineffective
- Fixed player's hands burying into surrounding objects
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7.34 MB
1.00
Release
06.03.2025
Oct-Path v1.00
Supported Minecraft versions
1.16.5
1.17
1.17.1
1.18
1.18.1
1.18.2
1.19
1.19.1
1.19.2
1.19.3
1.19.4
1.20
1.20.1
1.20.2
1.20.4
1.20.6
1.21
1.21.1
1.21.3
1.21.4
Loaders / Platforms
optifine
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7.34 MB