v0.2.7: Minecraft 26.1.x Support, Smear Tool Overhaul & Magic Selection Enhancements

This release adds Minecraft 26.1.x Fabric client compatibility work, brings chunked GPU preview rendering to Minecraft 1.21.5 through 1.21.8, overhauls the smear tool into a true block-smearing tool, and adds Paper server quality-of-life improvements.

Changes

Minecraft 26.1.x Support

• Fabric client compatibility work for Minecraft 26.1.x
• Updated rendering pipeline for 26.1.x official namespace changes
• Fixed BlockPos and Vec3i type compatibility issues
• Updated ItemStack serialization for 26.1.x API changes
• Fixed hotbar save/load functionality with new ItemStack codec
• Fixed toolbox icon textures in the 26.1.x Alt menu
• Restored selection visuals, move-source glass overlays, and large GPU block previews on 26.1.x

1.21.5 - 1.21.8 GPU Preview Compatibility

• Added chunked GPU preview support for Minecraft 1.21.5
• Added chunked GPU preview support for the legacy 1.21.6 - 1.21.8 range, compiled against 1.21.7
• Large move, clone, stack, smear, and glass/origin overlay previews now use persistent per-section GPU buffers on these older ranges
• 1.21.5 uses its older direct-uniform GPU API with a manual draw path
• 1.21.6 - 1.21.8 uses the 1.21.7 DynamicUniforms path with manual per-section draws; multi-draw batching remains limited to newer versions
• 1.21.9 - 1.21.11 runtime-adapts the GPU preview path across the DynamicUniforms and render-pass texture-binding API differences in that range
• Fixed the release build flow so ./build-axion.sh all rebuilds each range with fresh Kotlin outputs and passes across 1.21.5, legacy, modern, and 26.1.x targets

Smear Tool Overhaul

• True Block Smearing: Smear tool no longer acts like a stacking tool. It now samples your selection and spreads blocks as you scroll the point away, allowing you to create staircases or roofs very quickly
• Intuitive Placement: The tool now behaves as expected - dragging away from your selection spreads the sampled blocks in the direction of movement
• More Reliable Confirms: Smear now resolves overlapping destination blocks more deterministically, matching nearest-source behavior and reducing corrupted-looking folded smears

Stack, Smear, and Undo Reliability

• Increased repeat limits for larger stack and smear edits
• Expanded large stack/smear previews to use the newer GPU renderer capacity
• Improved no-op smear feedback when a target path is blocked or contains no air
• Improved clipboard-derived edit behavior for folded stack/smear operations
• Fixed a regression where Stack ignored entities even when Copy Entities was enabled

Magic Selection Enhancements

• Expanded Tag Support: Added more ## tags including ##pressure_plates and others for easier block filtering
• Visual Feedback for Disabled Templates: Disabled templates now show a red outline instead of gray, making it immediately clear which templates are active vs disabled (previously disabled templates looked similar to enabled ones)
• Same Block Select: New toggle option that can be enabled alongside custom masks. When active, clicks outside your block mask will still pick up same blocks using your brush's radius
• Continuous Stroke: Middle mouse button can now be held down for continuous stroke painting, making large selections faster to create

Paper Plugin

• Added console-only /axion reload to reload config-backed options without restarting the server
• Reload refreshes policy/config state used by server-backed multiplayer edits

Supported Versions

1.21.5 through 1.21.11 & 26.1.x

Support and Feedback

• Issues: https://github.com/castledking/Axion/issues
• Wiki: https://github.com/castledking/Axion/wiki
• Discord: https://discord.com/invite/pCKdCX6nYr
• Website: https://castled.codes

v0.2.7: Minecraft 26.1.x Support, Smear Tool Overhaul & Magic Selection Enhancements

This release adds Minecraft 26.1.x Fabric client compatibility work, brings chunked GPU preview rendering to Minecraft 1.21.5 through 1.21.8, overhauls the smear tool into a true block-smearing tool, and adds Paper server quality-of-life improvements.

Changes

Minecraft 26.1.x Support

• Fabric client compatibility work for Minecraft 26.1.x
• Updated rendering pipeline for 26.1.x official namespace changes
• Fixed BlockPos and Vec3i type compatibility issues
• Updated ItemStack serialization for 26.1.x API changes
• Fixed hotbar save/load functionality with new ItemStack codec
• Fixed toolbox icon textures in the 26.1.x Alt menu
• Restored selection visuals, move-source glass overlays, and large GPU block previews on 26.1.x

1.21.5 - 1.21.8 GPU Preview Compatibility

• Added chunked GPU preview support for Minecraft 1.21.5
• Added chunked GPU preview support for the legacy 1.21.6 - 1.21.8 range, compiled against 1.21.7
• Large move, clone, stack, smear, and glass/origin overlay previews now use persistent per-section GPU buffers on these older ranges
• 1.21.5 uses its older direct-uniform GPU API with a manual draw path
• 1.21.6 - 1.21.8 uses the 1.21.7 DynamicUniforms path with manual per-section draws; multi-draw batching remains limited to newer versions
• 1.21.9 - 1.21.11 runtime-adapts the GPU preview path across the DynamicUniforms and render-pass texture-binding API differences in that range
• Fixed the release build flow so ./build-axion.sh all rebuilds each range with fresh Kotlin outputs and passes across 1.21.5, legacy, modern, and 26.1.x targets

Smear Tool Overhaul

• True Block Smearing: Smear tool no longer acts like a stacking tool. It now samples your selection and spreads blocks as you scroll the point away, allowing you to create staircases or roofs very quickly
• Intuitive Placement: The tool now behaves as expected - dragging away from your selection spreads the sampled blocks in the direction of movement
• More Reliable Confirms: Smear now resolves overlapping destination blocks more deterministically, matching nearest-source behavior and reducing corrupted-looking folded smears

Stack, Smear, and Undo Reliability

• Increased repeat limits for larger stack and smear edits
• Expanded large stack/smear previews to use the newer GPU renderer capacity
• Improved no-op smear feedback when a target path is blocked or contains no air
• Improved clipboard-derived edit behavior for folded stack/smear operations
• Fixed a regression where Stack ignored entities even when Copy Entities was enabled

Magic Selection Enhancements

• Expanded Tag Support: Added more ## tags including ##pressure_plates and others for easier block filtering
• Visual Feedback for Disabled Templates: Disabled templates now show a red outline instead of gray, making it immediately clear which templates are active vs disabled (previously disabled templates looked similar to enabled ones)
• Same Block Select: New toggle option that can be enabled alongside custom masks. When active, clicks outside your block mask will still pick up same blocks using your brush's radius
• Continuous Stroke: Middle mouse button can now be held down for continuous stroke painting, making large selections faster to create

Paper Plugin

• Added console-only /axion reload to reload config-backed options without restarting the server
• Reload refreshes policy/config state used by server-backed multiplayer edits

Supported Versions

1.21.5 through 1.21.11 & 26.1.x

Support and Feedback

• Issues: https://github.com/castledking/Axion/issues
• Wiki: https://github.com/castledking/Axion/wiki
• Discord: https://discord.com/invite/pCKdCX6nYr
• Website: https://castled.codes

v0.2.7: Minecraft 26.1.x Support, Smear Tool Overhaul & Magic Selection Enhancements

This release adds Minecraft 26.1.x Fabric client compatibility work, brings chunked GPU preview rendering to Minecraft 1.21.5 through 1.21.8, overhauls the smear tool into a true block-smearing tool, and adds Paper server quality-of-life improvements.

Changes

Minecraft 26.1.x Support

• Fabric client compatibility work for Minecraft 26.1.x
• Updated rendering pipeline for 26.1.x official namespace changes
• Fixed BlockPos and Vec3i type compatibility issues
• Updated ItemStack serialization for 26.1.x API changes
• Fixed hotbar save/load functionality with new ItemStack codec
• Fixed toolbox icon textures in the 26.1.x Alt menu
• Restored selection visuals, move-source glass overlays, and large GPU block previews on 26.1.x

1.21.5 - 1.21.8 GPU Preview Compatibility

• Added chunked GPU preview support for Minecraft 1.21.5
• Added chunked GPU preview support for the legacy 1.21.6 - 1.21.8 range, compiled against 1.21.7
• Large move, clone, stack, smear, and glass/origin overlay previews now use persistent per-section GPU buffers on these older ranges
• 1.21.5 uses its older direct-uniform GPU API with a manual draw path
• 1.21.6 - 1.21.8 uses the 1.21.7 DynamicUniforms path with manual per-section draws; multi-draw batching remains limited to newer versions
• 1.21.9 - 1.21.11 runtime-adapts the GPU preview path across the DynamicUniforms and render-pass texture-binding API differences in that range
• Fixed the release build flow so ./build-axion.sh all rebuilds each range with fresh Kotlin outputs and passes across 1.21.5, legacy, modern, and 26.1.x targets

Smear Tool Overhaul

• True Block Smearing: Smear tool no longer acts like a stacking tool. It now samples your selection and spreads blocks as you scroll the point away, allowing you to create staircases or roofs very quickly
• Intuitive Placement: The tool now behaves as expected - dragging away from your selection spreads the sampled blocks in the direction of movement
• More Reliable Confirms: Smear now resolves overlapping destination blocks more deterministically, matching nearest-source behavior and reducing corrupted-looking folded smears

Stack, Smear, and Undo Reliability

• Increased repeat limits for larger stack and smear edits
• Expanded large stack/smear previews to use the newer GPU renderer capacity
• Improved no-op smear feedback when a target path is blocked or contains no air
• Improved clipboard-derived edit behavior for folded stack/smear operations
• Fixed a regression where Stack ignored entities even when Copy Entities was enabled

Magic Selection Enhancements

• Expanded Tag Support: Added more ## tags including ##pressure_plates and others for easier block filtering
• Visual Feedback for Disabled Templates: Disabled templates now show a red outline instead of gray, making it immediately clear which templates are active vs disabled (previously disabled templates looked similar to enabled ones)
• Same Block Select: New toggle option that can be enabled alongside custom masks. When active, clicks outside your block mask will still pick up same blocks using your brush's radius
• Continuous Stroke: Middle mouse button can now be held down for continuous stroke painting, making large selections faster to create

Paper Plugin

• Added console-only /axion reload to reload config-backed options without restarting the server
• Reload refreshes policy/config state used by server-backed multiplayer edits

Supported Versions

1.21.5 through 1.21.11 & 26.1.x

Support and Feedback

• Issues: https://github.com/castledking/Axion/issues
• Wiki: https://github.com/castledking/Axion/wiki
• Discord: https://discord.com/invite/pCKdCX6nYr
• Website: https://castled.codes

v0.2.7: Minecraft 26.1.x Support, Smear Tool Overhaul & Magic Selection Enhancements

This release adds Minecraft 26.1.x Fabric client compatibility work, brings chunked GPU preview rendering to Minecraft 1.21.5 through 1.21.8, overhauls the smear tool into a true block-smearing tool, and adds Paper server quality-of-life improvements.

Changes

Minecraft 26.1.x Support

• Fabric client compatibility work for Minecraft 26.1.x
• Updated rendering pipeline for 26.1.x official namespace changes
• Fixed BlockPos and Vec3i type compatibility issues
• Updated ItemStack serialization for 26.1.x API changes
• Fixed hotbar save/load functionality with new ItemStack codec
• Fixed toolbox icon textures in the 26.1.x Alt menu
• Restored selection visuals, move-source glass overlays, and large GPU block previews on 26.1.x

1.21.5 - 1.21.8 GPU Preview Compatibility

• Added chunked GPU preview support for Minecraft 1.21.5
• Added chunked GPU preview support for the legacy 1.21.6 - 1.21.8 range, compiled against 1.21.7
• Large move, clone, stack, smear, and glass/origin overlay previews now use persistent per-section GPU buffers on these older ranges
• 1.21.5 uses its older direct-uniform GPU API with a manual draw path
• 1.21.6 - 1.21.8 uses the 1.21.7 DynamicUniforms path with manual per-section draws; multi-draw batching remains limited to newer versions
• 1.21.9 - 1.21.11 runtime-adapts the GPU preview path across the DynamicUniforms and render-pass texture-binding API differences in that range
• Fixed the release build flow so ./build-axion.sh all rebuilds each range with fresh Kotlin outputs and passes across 1.21.5, legacy, modern, and 26.1.x targets

Smear Tool Overhaul

• True Block Smearing: Smear tool no longer acts like a stacking tool. It now samples your selection and spreads blocks as you scroll the point away, allowing you to create staircases or roofs very quickly
• Intuitive Placement: The tool now behaves as expected - dragging away from your selection spreads the sampled blocks in the direction of movement
• More Reliable Confirms: Smear now resolves overlapping destination blocks more deterministically, matching nearest-source behavior and reducing corrupted-looking folded smears

Stack, Smear, and Undo Reliability

• Increased repeat limits for larger stack and smear edits
• Expanded large stack/smear previews to use the newer GPU renderer capacity
• Improved no-op smear feedback when a target path is blocked or contains no air
• Improved clipboard-derived edit behavior for folded stack/smear operations
• Fixed a regression where Stack ignored entities even when Copy Entities was enabled

Magic Selection Enhancements

• Expanded Tag Support: Added more ## tags including ##pressure_plates and others for easier block filtering
• Visual Feedback for Disabled Templates: Disabled templates now show a red outline instead of gray, making it immediately clear which templates are active vs disabled (previously disabled templates looked similar to enabled ones)
• Same Block Select: New toggle option that can be enabled alongside custom masks. When active, clicks outside your block mask will still pick up same blocks using your brush's radius
• Continuous Stroke: Middle mouse button can now be held down for continuous stroke painting, making large selections faster to create

Paper Plugin

• Added console-only /axion reload to reload config-backed options without restarting the server
• Reload refreshes policy/config state used by server-backed multiplayer edits

Supported Versions

1.21.5 through 1.21.11 & 26.1.x

Support and Feedback

• Issues: https://github.com/castledking/Axion/issues
• Wiki: https://github.com/castledking/Axion/wiki
• Discord: https://discord.com/invite/pCKdCX6nYr
• Website: https://castled.codes

v0.2.6: Preview Rendering Recovery, GPU Pipeline Fixes & 1.21.5 Startup Fix

This release fixes the preview rendering regression where block previews, outlines, and guide visuals could disappear without ImmediatelyFast installed. It also stabilizes the new GPU preview path, fixes fluid preview offsets, improves plant/grass surface handling, and fixes a 1.21.5 black-screen startup issue.

Changes

• World Render Callback Fix: Moved Axion world visuals onto the stable END_MAIN render phase and fixed fallback routing so Fabric event and mixin paths do not suppress each other. This restores outlines, guide arrows, and block previews without relying on ImmediatelyFast.
• Large Preview Rendering Fix: Fixed chunked previews reporting success while drawing nothing. Medium and large previews now render reliably again, with the working CPU/Immediate fallback preserved.
• GPU Preview Pipeline Progress: Added a gated custom preview GPU pipeline for 1.21.11 using Axion's preview_shell shaders and DynamicTransforms. Fixed visibility, alignment, large-coordinate precision jitter, and camera movement issues in the custom GPU path.
• 1.21.5 Startup Fix: Excluded modern GPU preview shader resources from the 1.21.5 jar. This prevents the black-screen startup hang caused by 1.21.11 shader imports being packaged into the 1.21.5 build.
• Symmetry Keybind Fix: Ctrl + R and Ctrl + F symmetry bindings no longer trigger when Shift is held, allowing Ctrl + Shift + R/F to be used by other bindings.

Supported Versions

1.21.5 through 1.21.11

Support and Feedback

• Issues: https://github.com/castledking/Axion/issues
• Wiki: https://github.com/castledking/Axion/wiki
• Discord: https://discord.com/invite/pCKdCX6nYr
• Website: https://castled.codes