Differences

This shows you the differences between two versions of the page.

--- tutorial:mixin_hotswaps [2019/10/24 21:42] – created draylar
+++ tutorial:mixin_hotswaps [2024/06/30 00:11] (current) – add hint to vm option banana
@@ Line 2: / Line 2: @@
 Mixins can't be hot-swapped in a default Fabric environment. To enable this functionality, you'll have to specify the ''-javaagent'' flag inside your VM options.
-The only thing you'll need for step 1 is the sponge mixin jar. Fabric pulls this by default, so you should be able to locate it within your Gradle cache folder. IDEA users can look at the bottom of their project view on the left side of the screen to find the library:
+The only pre-requisite is having a copy of the sponge mixin jar. Fabric pulls this by default, so you should be able to locate it within your Gradle cache folder. IDEA users can look at the bottom of their project view on the left side of the screen to find the library:
 {{https://i.imgur.com/fUrhss5.png}}
@@ Line 10: / Line 10: @@
 {{https://i.imgur.com/SuW9MlV.png}}
-Run your game. You can now reload mixins using the same rules as normal:
+Run your game in debug mode. You can now reload mixins using the same rules as normal:
- - no adding or removing methods
+  * no adding or removing methods
- - no changing method parameters
+  * no changing method parameters
- - no adding or removing fields
+  * no adding or removing fields
-=== Notes ===
+You can do these things if you also add the ''-XX:+AllowEnhancedClassRedefinition'' VM option.
-In my experience, Mixin hot-swapping didn't fully work until I updated to JDK 1.8.0 231 (latest).
+To recompile your mixin in IntelliJ, use the ''Recompile'' option in the ''Build'' menu. The default keybind for this is ''Ctrl+Shift+F9''.
+=== Notes ====
+DCEVM does not officially support mixin swapping:
+  * When run on Java 1.8:181, DCEVM and Mixin reloads do not work.
+  * When run on DCEVM Java 11, you can reload, but the hot swap task freezes.
+  * When run on JetBrains Runtime's Java 17 fork (with DCEVM), Mixin hotswapping and DCEVM work properly.