Description
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Respackopts
PSA: Respackopts depends on LibJF, which you must add alongside it.
Respackopts provides resource and data packs with config menus\ By default, it provides a custom system for conditional resources, resource expansion and integrates with fabulous shaders
Using Respackopts
Users
After installing Respackopts, a menu button will appear besides all supported resource packs. No further configuration is needed.
Pack authors
Please head to the wiki for details on how to use Respackopts in a pack.
Performance Impact
Performance always depends on factors other than the game itself like disk speed, resource usage by other programs, the OS you are using, etc. These measurements were made with Minecraft 1.20.1, Fabric Loader 0.14.21, Fabric API 0.84.0, and LibJF 3.8.0 on Linux 6.3 with a Ryzen 5 7600X processor and an NVMe SSD. Please do not expect them to be representative for all other versions and setups, but they should give you a general idea of the impact of using Respackopts.LibJF injects hooks into the resource loader, meaning there is additional overhead for every resource access. In practice, this results in a five-percent increase in resource reloading time over vanilla, and an eight percent increase in game load times over vanilla (.2 seconds).
Respackopts uses those hooks and additional mixins to work, adding additional overhead. In practice, this results in a six-percent increase in resource reloading time over vanilla, and an eighteen percent increase in game load times over vanilla (.43 seconds).
The most significant increase is measurable during pack scanning, which takes nearly 100 times longer when comparing Minecraft with Respackopts to vanilla. This is because Respackopts performs and caches most parsing and computation during this stage. As the statistic for game loading shows, this is not necessarily noticeable during startup, because the total is still comparably small. It is only noticeable in the resource pack screen, where scanning is performed every 20 ticks and whenever the screen is resized, which can lead to minor freezes while it is visible. For this reason, I have created a separate mod that tweaks that screen for increased performance.
All Versions
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[26.3.0] 26.3.0
by JFronny on Oct 09, 2026
Download
Commits in Release 26.3.0:
- docs: mention modrinth list of compatible packs
- docs: add an additional pack
- chore: update fabric to 26.3
- fix: prevent extremely strange class cast exception on NeoForge
[26.2.2] 26.2.2
by JFronny on Oct 09, 2026
Download
Commits in Release 26.2.2:
- docs: remove accidental code block
- chore(neoforge): set iconFile
- fix: hide condition stack traces outside debug mode
- fix: work around MessageFormat oddities for one log message
- chore: bump deps
- feat(bake): start working on disjoint overlays
[26.1.3] 26.1.3
by JFronny on Oct 09, 2026
Download
Commits in Release 26.1.3:
- docs: add additional pack
- docs(README): reword performance measurement repro disclaimer
- build: tweak loom config for new changes
- fix: tag exprs with source file
- feat: show result signatures in /rpoc execute
- feat: add /rpoc execute as to execute in pack scope with IOLib
- test: adjust for attached file name
- perf: lazy expansion
- build: correct contact indentation
- fix: check for prefix in all input sequence permutations
- build: remove toolchains plugin
- build: avoid gradle depracations
- chore: bump deps
- build: use base for root project
- fix(bake): prevent packID NPE
- perf: defer fallback conf dir creation
- fix: avoid unsafe in ValidationLayer
- fix: prevent validation layer errors in DirFilterEvents
- fix: prevent validation layer errors in FileFilterEvents
- fix: do not log on empty returned stack
- docs: move performance details to details block
- build: bump plugins
[26.2.1] 26.2.1
by JFronny on Oct 09, 2026
Download
Commits in Release 26.2.1:
- build: remove toolchains plugin
- fix: require attention for client commands
- docs: add additional packs
- docs: add additional pack
- build: avoid gradle depracations
- chore: bump deps
- build: use base for root project
- fix(bake): prevent packID NPE
- perf: defer fallback conf dir creation
- fix: avoid unsafe in ValidationLayer
- style: migrate to native mapPath
- fix: prevent validation layer errors in DirFilterEvents
- fix: prevent validation layer errors in FileFilterEvents
- style: extract key handling
- fix: do not log on empty returned stack
- docs: move performance details to details block
- build: bump plugins
[26.2.0] 26.2.0
by JFronny on Oct 09, 2026
Download
Commits in Release 26.2.0:
- docs: add additional pack
- docs(README): reword performance measurement repro disclaimer
- build: tweak loom config for new changes
- fix: tag exprs with source file
- feat: show result signatures in /rpoc execute
- feat: add /rpoc execute as to execute in pack scope with IOLib
- test: adjust for attached file name
- perf: lazy expansion
- build: correct contact indentation
- fix: check for prefix in all input sequence permutations
- chore: update to 26.2
[4.14.3+forge] [1.21.11] 4.14.3+forge
by JFronny on Oct 09, 2026
Download
Commits in Release 4.14.3+forge:
- chore: tag composite pack resources
- docs: add additional pack
- build: configure JVM toolchain
- chore: bump deps
- fix: do not inject tagging into ResourcePack itself
- build: use older libjf for vm compatibility with config AP
[4.14.3] [1.21.11] 4.14.3
by JFronny on Oct 09, 2026
Download
Commits in Release 4.14.3:
- chore: tag composite pack resources
- docs: add additional pack
- build: configure JVM toolchain
- chore: bump deps
- fix: do not inject tagging into ResourcePack itself
- build: use older libjf for vm compatibility with config AP
[26.1.2] 26.1.2
by JFronny on Oct 09, 2026
Download
Commits in Release 26.1.2:
- chore: use libjf platform checks
- build: use jfmod version ranges
- docs: add additional pack
- feat: allow running outside of Minecraft
- chore: update deps
[26.1.0] 26.1.0
by JFronny on Oct 09, 2026
Download
With this version, the fabric and neoforge builds have been merged into one. Also, mod versions are now based on MC versions.
Commits in Release 26.1.0:
Commits in Release 26.1.0:
- chore: tag composite pack resources
- docs: add additional pack
- feat: update to 26.1
- style: clean up leftovers
- build: use published jfmod
- build: add foojay for neoloom NF
- build: use explicit MR project ID
- fix: add back icon
[4.14.0+1.21.1.forge.4] [1.21.1] 4.14.0+forge Backport.4
by JFronny on Oct 09, 2026
Download
Works around a load order issue on NeoForge
[4.14.0+1.21.1.4] [1.21.1] 4.14.0 Backport.4
by JFronny on Oct 09, 2026
Download
Works around a load order issue on NeoForge
[4.14.0+1.21.1.forge.3] [1.21.1] 4.14.0+forge Backport.3
by JFronny on Oct 09, 2026
Download
Backports changes related to overlays. If you continue to see issues, please contact me.
[4.14.0+1.21.1.3] [1.21.1] 4.14.0 Backport.3
by JFronny on Oct 09, 2026
Download
Backports changes related to overlays. If you continue to see issues, please contact me.
[4.14.2+forge] [1.21.11] 4.14.2+forge
by JFronny on Oct 09, 2026
Download
Commits in Release 4.14.2+forge:
- fix: update fallback i18n outside of reloads
- perf: defer data location resolution
- fix: allow including config supplier at head
- chore: add additional (arguably unneeded) null checks
- chore: wire up overlay support for tests
- chore: use NullMarked
- docs: mark testpack as supported everywhere
- chore: allow marking PackResources impls as broken
- fix: ignore dir rpos in FileFallbackProvider
- perf: add implementation-specific get/has impls to Scope
- docs: update vitepress and add a new pack
- fix: avoid overlay dir RPO cache collisions via pack tagging
[4.14.2] [1.21.11] 4.14.2
by JFronny on Oct 09, 2026
Download
Commits in Release 4.14.2:
- fix: update fallback i18n outside of reloads
- perf: defer data location resolution
- fix: allow including config supplier at head
- chore: add additional (arguably unneeded) null checks
- chore: wire up overlay support for tests
- chore: use NullMarked
- docs: mark testpack as supported everywhere
- chore: allow marking PackResources impls as broken
- fix: ignore dir rpos in FileFallbackProvider
- perf: add implementation-specific get/has impls to Scope
- docs: update vitepress and add a new pack
- fix: avoid overlay dir RPO cache collisions via pack tagging
[4.14.0+1.21.1.forge.2] [1.21.1] 4.14.0+forge Backport.2
by JFronny on Oct 09, 2026
Download
This is a one-off backport with reduced functionality but containing important fixes. If possible, please use Respackopts for the latest Minecraft version instead.
(Contains a compatibility fix for Dynamic Trees)
(Contains a compatibility fix for Dynamic Trees)
[4.14.0+1.21.1.forge.1] [1.21.1] 4.14.0+forge Backport.1
by JFronny on Oct 09, 2026
Download
This is a one-off backport with reduced functionality but containing important fixes. If possible, please use Respackopts for the latest Minecraft version instead.
[4.14.0+1.21.5.forge] [1.21.5] 4.14.0+forge Backport
by JFronny on Oct 09, 2026
Download
This is a one-off backport with reduced functionality but containing important fixes.
If possible, please use Respackopts for the latest Minecraft version instead.
If possible, please use Respackopts for the latest Minecraft version instead.
[4.14.0+1.21.5] [1.21.5] 4.14.0 Backport
by JFronny on Oct 09, 2026
Download
This is a one-off backport with reduced functionality but containing important fixes.
If possible, please use Respackopts for the latest Minecraft version instead.
If possible, please use Respackopts for the latest Minecraft version instead.
[4.14.0+1.21.1.forge] [1.21.1] 4.14.0+forge Backport
by JFronny on Oct 09, 2026
Download
This is a one-off backport with reduced functionality but containing important fixes.
If possible, please use Respackopts for the latest Minecraft version instead.
If possible, please use Respackopts for the latest Minecraft version instead.
[4.14.0+1.21.1] [1.21.1] 4.14.0 Backport
by JFronny on Oct 09, 2026
Download
This is a one-off backport with reduced functionality but containing important fixes.
If possible, please use Respackopts for the latest Minecraft version instead.
If possible, please use Respackopts for the latest Minecraft version instead.
[4.14.1+forge] [1.21.11] 4.14.1+forge
by JFronny on Oct 09, 2026
Download
Commits in Release 4.14.1+forge:
- docs: expand explanation of enums
- fix: disable validation layer reload listener if unneeded
- build(neoforge): unpin muScript
- fix: truncate when dumping assets
- build: get tests running again
- chore: update to 1.21.11
- chore: remap to mojmap
[4.14.1] [1.21.11] 4.14.1
by JFronny on Oct 09, 2026
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Commits in Release 4.14.1:
- docs: expand explanation of enums
- fix: disable validation layer reload listener if unneeded
- build(neoforge): unpin muScript
- fix: truncate when dumping assets
- build: get tests running again
- chore: update to 1.21.11
- chore: remap to mojmap
[4.14.0+forge] [1.21.10] 4.14.0+forge
by JFronny on Oct 09, 2026
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Commits in Release 4.14.0+forge:
- style: tasks.test
- docs: provide more examples of advanced conditions
- build: configure production run tasks to use common run directory
- fix: include shader code in transitively imported GLSL
- chore: indent shader code
- fix: avoid name collisions in shader code
- feat: make shader support opt-in
- docs: update UsedBy
- build: use namedElements for fabric
- fix: wire reload type through sync
- docs: update for 14
[4.14.0] [1.21.10] 4.14.0
by JFronny on Oct 09, 2026
Download
Commits in Release 4.14.0:
- style: tasks.test
- docs: provide more examples of advanced conditions
- build: configure production run tasks to use common run directory
- fix: include shader code in transitively imported GLSL
- chore: indent shader code
- fix: avoid name collisions in shader code
- feat: make shader support opt-in
- docs: update UsedBy
- build: use namedElements for fabric
- fix: wire reload type through sync
- docs: update for 14
[4.13.10+forge] [1.21.10] 4.13.10+forge
by JFronny on Oct 09, 2026
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Commits in Release 4.13.10+forge:
- build: correct artifact id
- chore: update to 1.21.10
[4.13.10] [1.21.10] 4.13.10
by JFronny on Oct 09, 2026
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Commits in Release 4.13.10:
- build: correct artifact id
- chore: update to 1.21.10
[4.13.9+forge] [1.21.9] 4.13.9+forge
by JFronny on Oct 09, 2026
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Commits in Release 4.13.9+forge:
- ci: use jfronny.dev
- fix: correct findResources behavior for fallback-only files
[4.13.9] [1.21.9] 4.13.9
by JFronny on Oct 09, 2026
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Commits in Release 4.13.9:
- ci: use jfronny.dev
- fix: correct findResources behavior for fallback-only files
[4.13.8+forge] [1.21.9] 4.13.8+forge
by JFronny on Oct 09, 2026
Download
Commits in Release 4.13.8+forge:
- chore: update to 1.21.9
![[ETF] Entity Texture Features](uploads/icons/thumbs/etf-entity-texture-features_2cd5af9c_thumb.jpg){kind=icon}