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Faster Iris Shadow Mapper [FISM]

Slightly improves the speed of Iris' shadow mapper. Built-in in Iris since Iris 1.11.2

Автор: maDU59_868,6 тыс.87обновлён 20 сент. 2026 г.
Оптимизация

Описание

⚠️ This has been included in Iris 1.11.2, it is now only useful for older MC versions or for forks like oculus ⚠️

Faster Iris Shadow Mapping is a really lightweight mod that prevents unneeded things from rendering during the shadow pass.

This project does not replace Iris, both needs to be used at the same time for it to work.

This mod also works with oculus.

How it works

During the shadow pass, for opaque models, the color of the model won't have any visual change, a blue car and a red car both cast the same shadow, no matter their color. So what this mod does is it prevents things like the text on signs, the banner patterns, the enchantment glint etc from rendering during the shadow pass. It only improves performances when some of those are visibles.

Performance showcase

Small base in a flat world (26.1.2 - 1.0.0)

With / Without | 100FPS / 87FPS (avg) | 63FPS / 58 FPS (0.05% low)
With: 100FPS Without: 87FPS
  • +10% FPS

A lot of signs and banners (26.1.2 - 1.0.0)

With / Without | 15FPS / 9FPS (avg) | 10FPS / 1 FPS (0.05% low)
With: 15FPS Without: 9FP
  • +50% FPS on average
  • +1000% FPS on 0.05% low
  • The signs have text on them but on the other side

Modpacks

Feel free to use this mod in your modpacks without asking for permission.

Галерея

100 FPS vs 86 for default IrisFISM logo

Последние версии

Все версии →
release

Faster Iris Shadow Mapper [FISM] 1.0.7

1.0.7
20 сент. 2026 г.23 тыс.Minecraft: 26.3fabric, quilt
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# What's new: - Improved Optifine compatibility to fix a performance issue
release

Faster Shadow Mapper 1.0.5

1.0.5
15 сент. 2026 г.76 тыс.Minecraft: 26.3fabric, quilt
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# What's new: - Added support for more mods. This will be migrated to another mod in the future as it won't cover only Iris and its forks anymore. **It is not useful in any way with Iris on 26.3, it's just here until Modrinth approves the new project**
release

Faster Iris Shadow Mapper 1.0.5

1.0.5
21 июн. 2026 г.49,5 тыс.Minecraft: 1.21, 1.21.1neoforge
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# What's new: - Fixed incorrect mixin target
release

Fancy World Animations 1.0.6

1.0.6
21 июн. 2026 г.5,2 тыс.Minecraft: 1.20.1fabric, quilt
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# What's new: - Bug fixes - Backported to forge 1.20.1
release

Faster Iris Shadow Mapper 1.0.6

1.0.6
21 июн. 2026 г.70 тыс.Minecraft: 1.20.1forge, neoforge
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# What's new: - Bug fixes - Backported to forge 1.20.1
release

Faster Iris Shadow Mapper 1.0.4

1.0.4
19 июн. 2026 г.450,7 тыс.Minecraft: 26.2fabric, quilt
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# What's new: - Reduced chances of crashes when using old/beta Iris versions - Removed unused code
release

Faster Iris Shadow Mapper 1.0.5

1.0.5
15 июн. 2026 г.28 тыс.Minecraft: 1.21, 1.21.1fabric, quilt
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Что нового
# What's new: - Fixed incorrect mixin target
release

Fancy World Animations 1.0.5

1.0.5
15 июн. 2026 г.498Minecraft: 1.20.1fabric, quilt
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Что нового
# What's new: - Fixed incorrect mixin target
release

Fancy World Animations 1.0.4

1.0.4
15 июн. 2026 г.143Minecraft: 1.21, 1.21.1fabric, quilt
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# What's new: - Fixed java requirement being too high - Lowered fabric loader requirement
release

Faster Iris Shadow Mapper 1.0.4

1.0.4
15 июн. 2026 г.716Minecraft: 1.21, 1.21.1neoforge
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Что нового
# What's new: - Fixed java requirement being too high - Lowered fabric loader requirement