{{Infobox version |title=Minecraft 21w10a |image=21w10a.jpg |image2=Java Edition 21w10a.png |edition=Java |type=Snapshot |date=March 10, 2021 |clienthash=7840a9b8d9aeb480b16962c40a2ca3758893f00e |jsonhash=40a9d63c50dc098824ff9117cc19e39afb61598d |serverhash=5998d2c7c15fea04b2541efdcbec4c8cfe5df2a6 |clientmap=5f15280e2823d988faa4c3b83db33d11f82f6afd |servermap=1a24830dcaac223465f4b915759c87fb44c7a0e2 |parent=1.17 |prevparent=1.16.5 |prev=21w08b |next=21w11a |nextparent=1.17 }} '''21w10a''' is the thirteenth [[snapshot]] for [[Java Edition 1.17]], released on March 10, 2021,{{snap|21w10a|March 10, 2021}} which adds lush caves and new deepslate variants. == Additions == === Blocks === ; [[File:Cracked Deepslate Bricks JE1 BE1.png|32px]] [[Cracked deepslate bricks]] * A cracked variation of [[deepslate bricks]]. * Obtained by smelting deepslate bricks. ; [[File:Cracked Deepslate Tiles JE1 BE1.png|32px]] [[Cracked deepslate tiles]] * A cracked variation of [[deepslate tiles]]. * Obtained by smelting deepslate tiles. ; {{Animate|Deepslate Coal Ore JE1 BE2.png; Deepslate Copper Ore JE2 BE2.png; Deepslate Emerald Ore JE1 BE1.png|32px}} Deepslate ores * Added deepslate ore variants for [[Copper Ore|copper]], [[Emerald Ore|emerald]] and [[Coal Ore|coal ore]]. ** Do not generate by default; they only have been added for use by creators of maps and data packs. ** Like other deepslate ores, they can be used in blasting and smelting recipes like normal ores. *** Again, like other deepslate ores, they unlock these recipes in the recipe book. ; [[File:Deepslate.png|32px]] [[Infested deepslate]] * An infested variant of deepslate. === World generation === ; [[File:Azalea Tree.png|32px]] [[Azalea tree]] * Generate above [[lush caves]], either on the surface or underground. * Consist of [[azalea leaves]] (both variants), [[oak log]]s and [[rooted dirt]]. ; {{BiomeLink|Lush caves}} * Currently the biome is only accessible in single-biome worlds. * Adaptive to the environment: every type of cave generation can be a lush cave. * [[Moss block]]s cover the floors and ceilings, along with [[moss carpet]]s and [[grass]] on the floors. * [[Spore blossom]]s grow from the ceiling and drip particles. * Contains [[clay]] pools where [[dripleaf]] plants grow out of them. ** Clay pools sometimes generate [[water]] sources over [[air]], and the water is suspended and does not flow. This has yet to be fixed. * Contains [[azalea]] bushes (both variants). * [[Cave vines]] with [[glow berries]] grow from the ceiling and light up the caves. === General === ; [[Shaders]] * Are now included for all supported render states. * Any shader except for the blitting shader can also be replaced in resource packs. * For now replacing these shaders is not officially supported and the way it works may change in the future. * Current rendering engine uses a system similar to the post-processing shader pipeline. There are some differences between both systems that cater to slightly different requirements. ; [[Tag]]s * Added the {{cd|coal_ores|copper_ores|emerald_ores|d=and}} block and item tags. ** Contain both the normal and deepslate ores of each ore type. * Added the lush_ground_replaceable block tag. ** Contains the [[Tag#blocks lush_plants_replaceable|#lush_plants_replaceable]] block tag, clay, and moss block. == Changes == === Blocks === ; [[Deepslate diamond ore]], [[deepslate gold ore]], [[deepslate iron ore]], [[deepslate lapis lazuli ore]], [[deepslate redstone ore]], [[coal ore]], [[diamond ore]], [[iron ore]], [[gold ore]] * The textures of these ores have been changed. ** Iron ore and deepslate iron ore no longer have streaks, better matching the appearance of other ores. ** Diamond ore closer resembles deepslate diamond ore. ; [[Cobbled deepslate]] * The texture has been changed. * Can now be smelted back into deepslate. ; [[Deepslate]] * Both the top and side textures have been changed. * Deepslate can now be placed along any axis. * Textures in caves now generate with a random rotation. ; [[Deepslate bricks]] and [[deepslate tiles]] * Can now be crafted. ; [[Lightning rod]] * Changelog states they can now be waterlogged, though this is not the case. ; [[Moss block]] * Using [[bone meal]] on it now spreads moss to blocks on any height. === Items === ; [[Spyglass]] * The item model has been changed back to a dedicated texture. ** Similar to [[trident]]s, the spyglass still uses a 3d model in the hand. ** The texture is different from the original item texture. === Mobs === ; [[Slime]] * The maximum size that slimes can be summoned with is now 128. === World generation === ; [[Crack carver]]s * Now are much less common. ; [[Fossil]]s * The fossils in the deepest part of the underground generate with deepslate diamond ore instead of coal ore. [[File:21w10a approximate ore distribution.jpg|thumb|400px|The new ore generation for 21w10a.]] ; Ore distribution * Now generates more [[emerald ore]] in mountains. * Now generates more [[lapis lazuli ore]]. * Now generates less [[copper ore]], [[gold ore]], and [[redstone ore]]. * Now generates smaller [[diamond ore]] blobs, but slightly more frequent (less diamond ore overall though). * Now generates less [[iron ore]], and it generates lower down. ** The deepest iron generation range: previously Y=-64 to -8, now Y=-64 to -32. ** The middle iron generation range: previously Y=-16 to 80 (most at 32), now Y=-24 to 56 (most at 16). * Reduced air exposure for [[coal ore]]. === Command format === ; {{cmd|/give}} * The give command can only give up to 100 stacks of items at a time (e.g. 6400 stone or 100 iron swords) ; {{cmd|/spawnpoint}} * Can no longer set a player's spawnpoint to areas that are out of the world. === Gameplay === ; {{EffectLink|Glowing}} * Glowing is now based on the outline of all layers on an entity, not just the base layer. === General === ; Game library updates * Rendering is now using OpenGL 3.2 core profile. ** All fixed function rendering has been replaced with shader-based rendering. ; [[Splashes]] * Changed the splash "OpenGL 2.1 (if supported)!" to "Now on OpenGL 3.2 core profile!" ; [[Subtitles]] * Glow item frames have their own subtitles, no longer using the same subtitles as normal item frames. ; [[Tag]]s * Removed moss block, the [[Tag#blocks flowers|#flowers]] block tag, grass, tall grass, moss carpet, small dripleaf, big dripleaf, big dripleaf stem, and vines from the lush_plants_replaceable block tag. * Removed the azalea_log_replaceable block tag. == Fixes == {{fixes|fixedin=21w10a |;old |29318|Client misses inventory updates while the player is manipulating items - causing invisible items. |32452|Fog generates only in the center of the screen. |84121|Shape of the glow effect is based on the mob's base layer. |87019|Only visible slots are updated clientside when you are inside an inventory. |91888|Hotkeying books on enchantment table causing client-side item count inaccuracy. |93243|Fog Rendering On AMD Graphics Cards & Integrated Graphics. |124109|Horses glitched with glowing effect. |135561|Failed to create OpenGL context on some Linux systems with Nvidia driver. |148071|If you switch to a crossbow after charging another bow/crossbow, the crossbow you switched to will go weird for a second in the hotbar. |148206|Hand punching animation is played after eating crops while looking at a block. |154094|Lectern running {{cmd|clear}} turns items into ghost items. |165208|Text and other UI elements are completely black when being affected by night vision and void/blindness simultaneously. |175964|Setblock command run by book in lectern to clear inventory run in command block causes ghost items. |182455|Entity shadow texture glitching with a resource pack. |186864|Leather armor can appear white. |194675|While spectating a creeper, enderman, spider, or cave spider, UI elements are rendered completely white. |201316|The {{cmd|give}} command can create so many items that the game will freeze. |210408|{{cmd|spawnpoint}} allows players to set their spawnpoint to out-of-bounds coordinates, which crashes the game when trying to respawn. |212168|{{key|Ctrl}} + Pick Block does not copy block state "{{cd|lit}}". |214629|FOV decreases when underwater regardless of FOV Effects accessibility setting. |215534|Spectating a mob with a shader whilst having a carved pumpkin equipped turns the screen completely white. |216510|The world border red effect, affects the brightness of a mob's shader. |;dev |204782|The glowing effect outline no longer renders (Intel Graphics on macOS). |205112|Enchantment glint appears white while inside powder snow. |206628|Emptied Bundles have an empty {{cd|Item}} Tag. |207818|Placing a sign from the offhand closes the sign UI immediately. |208301|{{cmd|clear}} does not properly affect the item on the mouse pointer after crafting it. |208836|Villager incorrectly holding spyglass. |211666|Guardians attack invisible axolotls. |212127|Normal ink sac and glow ink sac are not grouped in the creative inventory. |212144|Subtitles refer to Glow Item Frame as "Item Frame". |212216|Repeatedly clicking on a sign with an ink sac or glow ink sac abruptly stops the hand animation. |212236|Cannot visually critical-hit a glow squid (No sound/particles). |212314|Glow squid remains dark even if there is a light source block next to it. |212325|Glow Squid entity data (potion effects, custom name, ...) does not get saved. |213825|Using bone meal on a moss block only spreads moss to blocks on the same Y level. |214781|Lava does not generate at the very bottom of noise caves. |214784|Fossils can generate floating in caves. |214836|Water caves cause the land to be excessively flooded. |214844|Bedrock can be exposed to the air at the very bottom of the new caves. |214970|Phantoms continuously make too much flapping sounds. |215194|Structure blocks do not work below Y{{=}}0. |215838|There is currently no way to craft deepslate tiles and deepslate bricks. |215847|Infested stone generates in deepslate areas below mountain biomes. |215850|Deepslate Tile Wall comes before Deepslate Brick Wall but Deepslate Bricks come before Deepslate Tiles in creative inventory. |215939|Emerald ore spawns in lower frequencies than it should above Y{{=}}100. |216136|Polished deepslate slab isn't grouped with the other deepslate slabs in the creative inventory. |216363|Crash upon replacing soul sand or magma with the other under a tall bubble column using {{cmd|setblock}}. |216492|Fox incorrectly holding spyglass. |216735|Stone Lapis Ore generating in Deepslate. |216736|Lava lakes generate exposure in caves. |216738|Deepslate diamond ore texture is shifted a pixel to the right. |216765|Coal ore can generate below Y{{=}}0 when attached to a fossil. |216817|Inconsistency: Cobbled deepslate cannot be smelted back into deepslate. |;previous |217020|Gold ore and deepslate gold ore textures are inconsistent. }} == Video == {{slicedlime|lCaWjqVNf9A|UTZfKR4Kq80}} == References == {{Reflist}} == Navigation == {{Navbox Java Edition versions|1.1x}} [[de:21w10a]] [[es:Java Edition 21w10a]] [[fr:Édition Java 21w10a]] [[ja:Java Edition 21w10a]] [[pt:Edição Java 21w10a]] [[ru:21w10a (Java Edition)]] [[th:รุ่น Java 21w10a]] [[zh:21w10a]]