An absolutely shocking snapshot arrives! This snapshot adds some new functionality to Copper, some general tweaks, a fancy new way of getting performance metrics, and a bunch of bugfixes.

Happy mining!

New Features in 21w11a

Lightning rods can now, for the very first time ever, be waterlogged
New functionality for applying and removing wax from copper
Bonemealing rooted dirt now grows hanging roots underneath

Waxing Copper and Oxidization

Right click with honeycomb on copper blocks to wax them
Use honeycomb in a dispenser to wax copper blocks
Axes can scrape off wax and oxidation of copper blocks
Lightning strike hitting copper will clean its oxidation

Changes in 21w11a

Waxed copper blocks can be crafted into 4 copper ingots
Tweaked the cave sizes
Slightly increased the frequency of diamond ore blobs
Hanging roots block now renders randomly offset
Breaking a Big Dripleaf stem now drops a Big Dripleaf block
Moss blocks can be crafted with cobblestone or stone bricks to make the mossy versions of those blocks
The facing direction of Small Dripleaf blocks is now determined by which direction the player is facing when placing it
Fully-grown Amethyst Clusters now drop 4 Amethyst Shards (or more with Fortune) when mined with a pickaxe, and drop 2 Amethyst Shards when broken by hand, piston, or other means

Technical Changes in 21w11a

Added F3+L shortcut to generate and persist performance metrics from in-game

In-game client metrics reporting

Pressing F3+L while in the game will start a recording for 10 seconds capturing metrics such as tick durations, used heap sizes and other more detailed stats. These will be saved to a zip file in debug/profiling/<yyyy-MM-dd_HH.mm.ss>.zip and could be used for performance regression analysis if included in bug reports.

The exact metrics, output format and names are susceptible to change between versions, and our plan is to continue iterating on which metrics to capture.

Fixed Bugs in 21w11a

MC-1483 Snow covered grass/podzol/mycelium block side texture does not match original block
MC-12363 Lava / water / powder snow bucket desync when using it while rapidly turning
MC-70850 False negatives during occlusion culling
MC-71530 Spectators can't see through lava
MC-145501 Librarian and zombie librarian torso top texture is incorrect
MC-150054 Spectral arrow texture on item and entity aren't consistent
MC-150784 Brewing Stand bottle outline incorrect
MC-154006 Overworld wood signs use the outdated wood texture on all sides
MC-160195 Jungle door inventory texture is outdated
MC-160388 Painting back texture has not been updated with the texture update
MC-195806 Smoker's top and bottom textures have inconsistently colored pixels
MC-197561 Carved pumpkins and jack o'lanterns create swastikas
MC-197883 Jigsaw Structures causing DataFixer spam
MC-198805 Floating pixel in the tailfin of a guardian/elder guardian
MC-202760 Area effect cloud does not enforce a maximum radius
MC-203554 block.amethyst_block.chime has no subtitle
MC-203561 Amethyst crystal cluster drops items when block is moved directly by a piston without actually breaking the block
MC-203623 Inconsistency: Breaking amethyst crystals with hands doesn't drop the item, but breaking the block they are placed on drops them
MC-203676 Tinted Glass suffocates entities inside of it
MC-203753 Spyglass use statistic never increases
MC-203918 Mobs can spawn on tinted glass
MC-204016 When filling a lava cauldron with lava, the lava is placed on the ground, not in the cauldron. This also affects powder snow.
MC-204862 Tinted glass is not included in the impermeable tag
MC-205913 Lightning rod can spawn skeleton horses with skeletons
MC-206787 World Border is rendered upside down
MC-207557 Frozen hearts in hardcore mode look identical to frozen hearts in survival mode
MC-211513 Trident returning to owner not in the same world can cause permanent player kick
MC-212123 Player lighting is inconsistent in the inventory and appears darker on the front
MC-212226 Bone Meal can still be used on a Glow Lichen when it is unable to grow
MC-212410 Cannot compost glow lichen
MC-213743 Spectators can't see through powder snow
MC-213764 Removing the block supporting a spore blossom allows the spore blossom to float
MC-213765 Cave vine blocks are inconsistent in ID from other similar blocks
MC-213768 Removing the support block for hanging roots allows it to float
MC-213778 Cave vines cannot be climbed
MC-213782 Cave vines do not slow you down like other vines
MC-213798 Cave vines head and body emit different light levels
MC-213886 Bone meal cannot be used on dripleaf stems
MC-213911 Cave vines body and cave vines head share the same name
MC-213980 Moss appropriate tool is axe rather than hoe
MC-214568 Setting a lectern on fire causes z-fighting
MC-215036 Snow layers in "Snowy Kingdom" superflat preset generate 64 blocks above the ground
MC-215384 Azaleas cannot be used as a fuel
MC-216134 Gilded blackstone texture does not match the new side texture of blackstone
MC-216184 Player takes no fall damage on blocks above y=316
MC-216227 Sugar cane item texture is no longer accurate from 13w36a forward
MC-216737 When replacing tuff, ores still generate with a "stone" background below y=0
MC-216945 Teams become dysfunctional when any entity leaves the team
MC-216965 Flat "slices" of terrain generating in cracks
MC-217303 Potential optimization target in DepthBasedReplacingBaseStoneSource
MC-217546 stat.fallOneCm is not updated when falling onto a block above y=316
MC-217802 Some blocks generate at wrong Y height in a superflat world
MC-218587 Lightning rod still can't be waterlogged
MC-218594 Debug chunk borders don't render properly
MC-218596 Debug pie is blacked out
MC-218597 Water has no fog anymore
MC-218603 Screen turns dark grey when switching dimension
MC-218604 Hanging roots can generate hanging on other hanging roots, making them float
MC-218609 Mipmapping causes some block faces to become too dark
MC-218610 Banners are unimpacted by light levels
MC-218626 Cannot enchant items
MC-218635 With fast graphics, the freezing overlay renders black, and covers the whole screen black in first person
MC-218640 Broken spyglass overlay on fast graphics
MC-218641 Red vignette shown when outside the world border is too intense
MC-218645 The carved pumpkin overlay turns the screen completely black when using fast graphics
MC-218652 The green nausea overlay no longer renders
MC-218653 Glowing effect no longer changes to team color
MC-218655 Floating water generates excessively in lush caves
MC-218660 The nether portal overlay no longer renders, whilst using fast graphics
MC-218695 Shulkers do not flash red when hurt or killed
MC-218712 Debug pie has purple box when moving an enchanted item
MC-218713 Right clicking to open alternate recipes does not show the recipes
MC-218729 Noise cave entrances cause unnatural, smooth edges in terrain
MC-218734 Caves generate with very blocky areas
MC-218748 At sunset, a blue line appears in the northern and southern skies
MC-218753 Ambient occlusion of the player seen in the survival inventory has changed
MC-218765 Glowing effect no longer renders around translucent pixels
MC-218793 Two white lines appear on the Mojang loading screen
MC-218817 Cave Vines can generate without supporting blocks
MC-218825 M1 ARM Macs crash when using Fabulous Graphics mode as was the case in older versions, but no lack of support warning is shown
MC-218830 World border is white
MC-218834 You can see block hitboxes very clearly whilst in powder snow/lava
MC-218845 Mojang logo screen flashes blue before changing to red
MC-218852 World border is occasionally shown as a solid color upon being loaded
MC-218877 The red flash when a mob is hurt/killed appears to be slightly dimmed
MC-218881 When selecting text in the end, the sky gets highlighted
MC-218911 The background of hover-event text becomes blue when text is selected in an anvil or chat
MC-218945 Spyglass has a gradient effect while freezing
MC-218979 Cave ceilings and floors sometimes too flat or blocky
MC-218988 Fire is rendered dark in the player/horse/llama UI
MC-218990 Transparency buffers start with blue background instead of empty background
MC-219002 The wither's wither armor has a blue aura around it
MC-219006 The background opacity of subtitles and chat, are affected by a potion effect UI fading out
MC-219014 Charged creeper layer makes clouds and entities invisible
MC-219036 World border is shown as a solid color when picking up items or experience orbs
MC-219039 World border does not render when below the world
MC-219049 Reloading resource packs no longer shows the progress bar while the transparent background is shown
MC-219105 Entity hitboxes can be seen whilst inside of powder snow/lava
MC-219108 Chat scroll bar is offset
MC-219111 Social interactions scroll bar appears broken
MC-219126 Xray with spyglass
MC-219155 Cast fishing line is disconnected from the rod
MC-219180 Slime blocks, honey blocks, stained glass, and ice are fully lit when moved by pistons
MC-219208 Xray using enchanted items
MC-219212 Entity shadows can be seen whilst inside of powder snow/lava
MC-219224 The background opacity of command syntax help is affected when highlighting text
MC-219278 Being inside of a block no longer shows the block texture
MC-219281 Dying ender dragon is rendered too bright
MC-219392 Lead/fishing line is no longer affected by the fog from powder snow/lava
MC-219597 End portal and end gateway textures expand as the player travels further from the block

Minecraft Snapshot 21w11a