Product
About
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".
"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".
Preview
Product images
Environment
Requirements & compatibility
Compatibility & requirements
Optifine1.16.5 – 1.20.21.20.41.20.6 – 1.21.11.21.3 – 1.21.41.21.11
Local host
Required
Hosting on services
Unsupported
Terms
License
Terms for using, modifying and redistributing this product.
LicenseRef-CustomModrinth
Release
Latest release
v1.23
16.07.2026 · Modrinth
- 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
Gallery
Project images
Screenshots and images from the original Modrinth page.
Oct-Path_sample21_20251203
Oct-Path_sample23_20251203
Oct-Path_sample22_20251203
Oct-Path_sample31_20260704
Oct-Path_sample34_20260715
Oct-Path_sample29_20251203
Oct-Path_sample30_20260704
Oct-Path_sample28_20251203
Oct-Path_sample20_20250901
Oct-Path_sample27_20251203
Oct-Path_sample26_20251203
Oct-Path_sample25_20251203
Oct-Path_sample32_20260704
Oct-Path_sample33_20260704
History
Project versions
Published versions and original Modrinth files.
v1.23LatestRelease
16.07.2026 · 1 215 downloads
Optifine1.16.51.171.17.11.181.18.11.18.21.191.19.1
- 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
v1.22Release
04.07.2026 · 309 downloads
Optifine1.16.51.171.17.11.181.18.11.18.21.191.19.1
- 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
v1.21Release
07.12.2025 · 5 691 downloads
Optifine1.16.51.171.17.11.181.18.11.18.21.191.19.1
- 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
v1.20Release
03.09.2025 · 3 249 downloads
Optifine1.16.51.171.17.11.181.18.11.18.21.191.19.1
- 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
v1.11Release
27.06.2025 · 3 198 downloads
Optifine1.16.51.171.17.11.181.18.11.18.21.191.19.1
- 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
v1.10Release
06.06.2025 · 1 306 downloads
Optifine1.16.51.171.17.11.181.18.11.18.21.191.19.1
- 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
v1.03Release
11.04.2025 · 2 793 downloads
Optifine1.16.51.171.17.11.181.18.11.18.21.191.19.1
- 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
v1.02Release
02.04.2025 · 1 027 downloads
Optifine1.16.51.171.17.11.181.18.11.18.21.191.19.1
- 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
v1.01Release
19.03.2025 · 970 downloads
Optifine1.16.51.171.17.11.181.18.11.18.21.191.19.1
- 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
v1.00Release
06.03.2025 · 1 033 downloads
Optifine1.16.51.171.17.11.181.18.11.18.21.191.19.1
Scroll products with the wheel or arrows