Simple Iris shader pack implementing SMAA 1x
Product
About
A simple Iris shader pack implementing Enhanced Subpixel Morphological Antialiasing 1x with improved edge detection using redmean color difference.
It intelligently smoothes diagonal edges to reduce staircase-like artifacts with minimal performance impact, while leaving color, lighting and large-scale geometry as identical as possible to vanilla Minecraft. It includes the highly optimized implementation of vanilla-like rendering from Base-460C.
Requirements
If you have a decently modern non-macOS device it probably supports everything you need, but you might have to update your Iris and graphics drivers.
Preview
Product images
Environment
Requirements & compatibility
Compatibility & requirements
IrisMinecraft1.20.1 – 1.21.1126.126.1.126.1.2
Local host
Required
Hosting on services
Unsupported
Terms
License
Terms for using, modifying and redistributing this product.
MIT LicenseModrinth
Release
Latest release
v2.0.0-beta.1+93.0-94.0
29.07.2026 · Modrinth
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Optimized SMAA edge detection
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Made SMAA local contrast adaptation factor in edge detection configurable, and lowered the default value
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Updated and increased maximum supported pack format to 94.0
- Minimum supported pack format is now 93.0
Gallery
Project images
Screenshots and images from the original Modrinth page.
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History
Project versions
Published versions and original Modrinth files.
v2.0.0-beta.1+93.0-94.0LatestBeta
29.07.2026 · 161 downloads
Minecraft26.3-snapshot-526.3-snapshot-6
-
Optimized SMAA edge detection
-
Made SMAA local contrast adaptation factor in edge detection configurable, and lowered the default value
-
Updated and increased maximum supported pack format to 94.0
- Minimum supported pack format is now 93.0
v2.0.0-beta.0+91.0-92.0Beta
21.07.2026 · 56 downloads
Minecraft26.3-snapshot-326.3-snapshot-4
Updated and increased maximum supported pack format to 92.0
v2.0.0-beta.0+91.0-91.0Beta
14.07.2026 · 60 downloads
Minecraft26.3-snapshot-3
This is a vanilla resource pack port of SMAA-MC (to be renamed to Grindstone) using the new end-of-frame post effect added in Minecraft 26.3 Snapshot 3. A modified FidelityFX Contrast Adaptive Sharpening 1.2 pass has also been added to recover detail after anti-aliasing
v1.4.0Release
12.11.2025 · 4 315 downloads
Iris1.21.101.21.11
- Updated light level conversion for compatibility with Iris 1.9.6+1.21.10. This breaks support for most older versions.
v1.3.0Release
25.08.2025 · 13 416 downloads
Iris1.20.11.20.21.20.31.20.41.20.51.20.61.211.21.1
- Changed the default Line Width to better match vanilla
6.0->2.5- Modified the border fog start distance algorithm to better match vanilla
- The Relative Border Fog Start option has been replaced by Border Fog Start Ratio
v1.2.0Release
01.08.2025 · 1 275 downloads
Iris1.20.11.20.21.20.31.20.41.20.51.20.61.211.21.1
- Merged the vanilla-like rendering implementation from Base-460C to overwrite Iris' sometimes broken fallback shaders (Closes #6)
- This adds three new geometry-related shader pack options: Cloud Fog End, Relative Border Fog Start and Line Width. These properties would normally be dynamic and controlled by the game, but are unavailable in Iris' shader pack API and are therefore made available to the user for manual configuration
- Redesigned the shader pack options menu
v1.1.3Release
19.04.2025 · 4 406 downloads
Iris1.20.11.20.21.20.31.20.41.20.51.20.61.211.21.1
- Fixed incompatibility with some graphics drivers (Closes #3)
v1.1.2Release
01.02.2025 · 2 569 downloads
Iris1.20.11.20.21.20.31.20.41.20.51.20.61.211.21.1
- Fixed orientation-based shading being disabled (Closes #1)
- Enabled
oldLighting
v1.1.1Release
26.01.2025 · 400 downloads
Iris1.20.11.20.21.20.31.20.41.20.51.20.61.211.21.1
- Fixed an invalid color buffer format being specified, causing fallback to 8-bit RGBA
- 16-bit RGBA is now used
- Ensured rounding is consistent across OpenGL implementations
- This was missed while porting from HLSL to GLSL, since the HLSL
roundalways rounds midpoints towards even integers while the GLSLroundhas implementation-dependant behavior. GLSLroundEvenis now used instead
v1.1.0Release
23.12.2024 · 1 007 downloads
Iris1.20.11.20.21.20.31.20.41.20.51.20.61.211.21.1
- Exchanged Chebyshev distance for redmean color difference in edge detection, to more closely match human perception
- Micro-optimized blending weight calculation
- Converted LUTs to raw textures to enable smaller color formats on the GPU
v1.0.1Release
01.12.2024 · 808 downloads
Iris1.20.11.20.21.20.31.20.41.20.51.20.61.211.21.1
Initial Modrinth release
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