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Light				 | Pink Army

Light (or lighting) in Minecraft affects visibility, mob spawning, and plant growth. There are three aspects of Minecraft‘s lighting system: light level, internal light level, and rendered brightness.

Light level[]

Light levels can be found on the debug screen in Java Edition. Light may come from two sources: the sky and certain blocks. There are 16 light levels, specified by an integer from 0 (the minimum) through 15 (the maximum).

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Block light[]

Block light comes from light-emitting blocks, and spreads using a flood fill algorithm.

The block light level decreases by one for each meter (block) of taxicab distance from the light source. This applies to each of the 3 coordinate axes. In other words, the light level decreases diagonally by the sum of the distances along each axis. For example:

  • If a torch with light level 14 is placed on the floor, the light level of the adjacent floor blocks in all four directions is 13, while the diagonal blocks in all four directions have a light level of 12 (14 minus 1 south, minus 1 east).
  • If a torch with light level 14 is placed on a wall one block above the floor, then the block on the floor that is one block southeast of and below the torch has a light level of 11 (14 minus 1 south, minus 1 east, minus 1 down).

In Bedrock Edition, light-filtering blocks can reduce more than 1 level of block light.

On a surface, this effect produces a diamond-shaped pattern of illumination around the light source.

In Java Edition, when calculating lighting, the shapes of some blocks are detected: piston, daylight detectors, enchanting table, farmland, lectern, stonecutter, grass path, snow, end portal frame, slabs and stairs, so that the light passing through them can spread only in specific directions. For example, the grass path prevents the light from propagating downward, but the light can propagate in other directions.

Sky light[]

The sky light level for blocks exposed to broad daylight is 15. Sky light cast onto blocks can spread to darker areas using a flood fill algorithm. Sky light is not reduced at night; rather, the spawning of mobs is determined by internal light values.

Opaque blocks can prevent the spread of sky light. By contrast, transparent blocks such as glass and iron bars have no effect on the sky light level. All light-filtering blocks, however, reduce the spread of sky light.

When sky light of a level of 15 spreads down through a transparent block, the level remains unchanged. When it spreads horizontally or upward, it reduces 1 light level. However, when it spreads through a light-filtering block, it does not follow the above two rules and attenuates specific light levels.

Sky light with a level less than 15 spreads as block light – when it propagates to adjacent (including top and bottom, six blocks in total) blocks, it is attenuated until it is 0.

In Java Edition, when calculating lighting, the shapes of some blocks are detected: piston, daylight detectors, enchanting table, farmland, lectern, stonecutter, grass path, snow, end portal frame, slabs, and stairs. They have directional opacity, so that the light passing through them can spread only in specific directions. For example, the grass path prevents the light from propagating downward, but the light can propagate in other directions.

Light-filtering blocks[]

In Java Edition, all of the following light-filtering blocks decrease sky light by 1 level (but do not affect block light).

Light-filtering blocks in Java Edition Icon Block Water.png Water Waterlogged Oak pinkarmy.net All transparent waterlogged blocks Bubble Column JE1 pinkarmy.net Bubble Column Ice JE2 pinkarmy.net Ice Frosted Ice 1 JE2 pinkarmy.netFrosted Ice 2 JE2 pinkarmy.netFrosted Ice 3 JE2 pinkarmy.net Frosted Ice Cobweb JE2 pinkarmy.net Cobweb Oak Leaves pinkarmy.net Leaves Slime Block JE2 pinkarmy.net Slime Block Honey Block JE1 pinkarmy.net Honey Block Spawner pinkarmy.net Spawner Lava pinkarmy.net Lava Beacon JE6 pinkarmy.net Beacon End Gateway JE2 pinkarmy.net End Gateway Chorus Plant JE2 pinkarmy.net Chorus Plant Chorus Flower JE2 pinkarmy.net Chorus Flower Shulker pinkarmy.net Shulker Box

In Bedrock Edition, light-filtering blocks can reduce more levels of block or sky light. The following values are the amounts by which each block decreases the light level.

Light-filtering blocks in Bedrock Edition Icon Block Amount of decrease Anvil (N) pinkarmy.net Anvil 3 Hopper (D) JE3 pinkarmy.net Hopper Ice JE2 pinkarmy.net Ice Water BE (animated).png Water 2 Cobweb JE2 pinkarmy.net Cobweb 1 Oak Leaves pinkarmy.net Leaves

Light-emitting blocks[]

The following values are the brightness of the blocks themselves. Icon Block Light Level Beacon JE6 pinkarmy.net Beacon 15 Campfire JE2 pinkarmy.net Campfire, when lit 15 Conduit JE1 pinkarmy.net Conduit 15 End Gateway JE2 pinkarmy.net End Gateway (block) 15 End pinkarmy.net End Portal (block) 15 Glowstone JE4 pinkarmy.net Glowstone 15 Fire.png Fire 15 Lava pinkarmy.net Lava 15 Lava Cauldron pinkarmy.net Cauldron containing lava 15 Jack o'Lantern (S) pinkarmy.net Jack o’Lantern 15 Lantern JE1 pinkarmy.net Lantern 15 Lit Redstone Lamp JE3 pinkarmy.net Redstone Lamp, when lit 15 Respawn Anchor (Charges 4) pinkarmy.net Respawn Anchor, fully charged 15 Sea Lantern JE1 pinkarmy.net Sea Lantern 15 Sea Pickle 4 JE1 pinkarmy.net Sea Pickle with four bodies, when in water 15 Shroomlight JE1 pinkarmy.net Shroomlight 15 Purple Torch pinkarmy.netBlue Torch pinkarmy.netGreen Torch pinkarmy.netRed Torch pinkarmy.net Colored Torch‌[Education and Bedrock editions only] 14 End Rod (U) JE2 pinkarmy.net End Rod 14 Cave Vines Plant (berries) JE1 pinkarmy.netCave Vines (berries) JE1 pinkarmy.net Glow Berries 14 Torch JE6 pinkarmy.net Torch 14 Underwater Torch pinkarmy.net Underwater Torch‌[Education and Bedrock editions only] 14 Lit Blast Furnace (S) pinkarmy.net Blast Furnace, when lit 13 Lit Furnace (S) pinkarmy.net Furnace, when lit 13 Lit Smoker (S) pinkarmy.net Smoker, when lit 13 Four pinkarmy.net Candles, with four candlesticks, when lit 12 Enchanting Table JE4 pinkarmy.net Enchanting Table‌[Bedrock Edition only] 12‌[until BE 1.17.20]7‌[upcoming: BE 1.17.20] Glowing Obsidian pinkarmy.net Glowing Obsidian‌[Bedrock Edition only] 12 Sea Pickle 3 JE1 pinkarmy.net Sea Pickle with three bodies, when in water 12 Nether Portal (EW).gif Nether Portal (block) 11 Respawn Anchor (Charges 3) pinkarmy.net Respawn Anchor, 3⁄4 charged 11 Crying Obsidian JE1 pinkarmy.net Crying Obsidian 10 Soul pinkarmy.net Soul Campfire, when lit 10 Soul pinkarmy.net Soul Fire 10 Soul pinkarmy.net Soul Lantern 10 Soul Torch pinkarmy.net Soul Torch 10 Three pinkarmy.net Candles, with three candlesticks, when lit 9 Deepslate Redstone Ore, when touched 9 Redstone Ore JE4 pinkarmy.net Redstone Ore, when touched 9 Sea Pickle 2 JE1 pinkarmy.net Sea Pickle with two bodies, when in water 9 Ender Chest (S) JE2 pinkarmy.net Ender Chest 7 Glow Lichen (D) pinkarmy.netGlow Lichen (E) pinkarmy.netGlow Lichen (N) pinkarmy.netGlow Lichen (S) pinkarmy.netGlow Lichen (U) pinkarmy.netGlow Lichen (W) pinkarmy.net Glow Lichen 7 Redstone Torch pinkarmy.net Redstone Torch, when lit 7 Respawn Anchor (Charges 2) pinkarmy.net Respawn Anchor, 1⁄2 charged 7 Two pinkarmy.net Candles, with two candlesticks, when lit 6 Sea Pickle 1 JE1 pinkarmy.net Sea Pickle with a single body, when in water 6 Amethyst Cluster (U) pinkarmy.net Amethyst Cluster 5 Large Amethyst Bud (U) pinkarmy.net Large Amethyst Bud 4 Blue Ice JE1 pinkarmy.net Blue Ice‌[Education Edition only] 4 Candle pinkarmy.net Candles, as a single candlestick, when lit 3 Magma Block JE2 pinkarmy.net Magma Block 3 Spawner pinkarmy.net Monster Spawner‌[Bedrock Edition only] 3‌[until BE 1.17.30] Respawn Anchor (Charges 1) pinkarmy.net Respawn Anchor, 1⁄4 charged 3 Medium Amethyst Bud (U) pinkarmy.net Medium Amethyst Bud 2 Small Amethyst Bud (U) pinkarmy.net Small Amethyst Bud 1 Brewing pinkarmy.net Brewing Stand 1 Brown Mushroom JE2 pinkarmy.net Brown Mushroom 1 Dragon Egg JE1 pinkarmy.net Dragon Egg 1 End Portal Frame (S) JE5 pinkarmy.net End Portal Frame 1 Inactive Sculk Sensor pinkarmy.net Sculk Sensor 1 Light 0 pinkarmy.netLight 1 pinkarmy.netLight 2 pinkarmy.netLight 3 pinkarmy.netLight 4 pinkarmy.netLight 5 pinkarmy.netLight 6 pinkarmy.netLight 7 pinkarmy.netLight 8 pinkarmy.netLight 9 pinkarmy.netLight 10 pinkarmy.netLight 11 pinkarmy.netLight 12 pinkarmy.netLight 13 pinkarmy.netLight 14 pinkarmy.netLight 15 pinkarmy.netLight 0 pinkarmy.netLight 1 pinkarmy.netLight 2 pinkarmy.netLight 3 pinkarmy.netLight 4 pinkarmy.netLight 5 pinkarmy.netLight 6 pinkarmy.netLight 7 pinkarmy.netLight 8 pinkarmy.netLight 9 pinkarmy.netLight 10 pinkarmy.netLight 11 pinkarmy.netLight 12 pinkarmy.netLight 13 pinkarmy.netLight 14 pinkarmy.netLight 15 pinkarmy.net Light Block 0-15

See Light Block for details

See more: Wildmutt | Pink Army

Comparison of the different light levels that blocks emit.

Internal light level[]

Internal sky light versus time and sky light

The internal light level is used for calculations within the game. The game uses the internal light level of one block to compute aspects of the game, which include mob spawning, plant growth, and daylight detector outputs.

The game uses sky light, time, and weather to calculate an internal sky light value (also known as darkening sky light), then uses the maximum level of the block light and the internal sky light to calculate the internal light (formula: (max(internal sky light,block light))). This value is an integer with a maximum level of 15; it can also be negative.

Here are the levels of internal sky light at a sky light of level 15:

Internal sky light Clear Rain or Snowfall Thunder Time Time Time Time Time Time 4 13670-22330 13670-22330 13670-22330 5 22331-22491 13509-13669 22331-22565 13436-13669 22331-22671 13330-13669 6 22492-22652 13348-13508 22566-22798 13203-13435 22672-23010 12990-13329 7 22653-22812‌[JE only]22653-22813‌[BE only] 13188-13347 22799-23031 12969-13202 23011-23352 12648-12989 8 22813‌[JE only]-2297322814‌[BE only]-22973 13027-13187 23032-23266 12734-12968 23353-23700 12300-12647 9 22974-23134 12867-13026 23267-23504 12497-12733 23701-59 11941‌[JE only]-1229911942‌[BE only]-12299 10 23135-23296 12705-12866 23505-23745 12256-12496 60-11940‌[JE only]60-11941‌[BE only] 11 23297-23459 12542-12704 23746-23991 12010-12255 N/A 12 23460-23623‌[JE only]23460-23624‌[BE only] 12377-12541 23992-12009 N/A 13 23624‌[JE only]-2379023625‌[BE only]-23790 12210-12376 N/A N/A 14 23791-23960 12041-12209 N/A N/A 15 23961-12040 N/A N/A

To obtain an internal sky light for a sky light level s less than 15, take the internal level at 15 l and subtract it with the difference between s and 15: l-(15-s).

Icon Time Internal sky light when sky light is 15 noon, during clear weather 15 noon, during Rain or Snowfall 12 noon, during a Thunderstorm 10[storm 1] midnight, during clear weather 4

Effects of internal light[]

Note: Keep in mind that the internal light level is only one of the considerations that apply to mob spawning and plant growth.

Mobs[]

Mobs may ignore the light level they are supposed to spawn in after using /fill.[1] ‌[until JE 1.18]:

Light level >

Mob v

1-383-744-3087-1016 7 8 9 10 11 12 13 14 15 Bats Spawn at y: 0-62 Spawn at y: 0-62 from October 20 to November 3‌[JE only] Do not spawn Blazes Spawn in Nether Fortresses Do not spawn Wither Skeletons Spawn in Nether Fortresses Do not spawn Zombified Piglins Spawn in the Nether Do not spawn Slimes Spawn in swamp biomes at y: 50-70 Do not spawn in swamp biomes Spawn in slime chunks in y: 0-40 Zombies Skeletons Spawn in the Overworld Do not spawn Do not spawn, burn in sunlight Drowned Spawn in oceans and rivers Hostile, do not spawn Burn in sunlight, ignore player outside water when in sunlight Creepers Witches Spawn in the Overworld Do not spawn Phantoms Spawn in the Overworld if player hasn’t entered a bed in over 3 in-game days Do not spawn Burn in sunlight Spiders Cave spiders Spawn in the Overworld Hostile, do not spawn Do not spawn, neutral unless provoked Silverfish[note 1] Spawn in the Overworld Hostile, do not spawn Endermen Spawn in the Overworld, the Nether, and the End, neutral unless provoked Spawn only in the End Do not spawn, teleport randomly in Overworld

‌[upcoming: JE 1.18]: [more information needed]

Blocks[]

Block Level 0-3 Level 4-7 Level 8 Level 9 Level 10 Level 11 Level 12 Level 13-15 Snow[note 1] Forms Neither forms nor melts[note 2] Melts Ice[note 3] Forms Neither forms nor melts[note 4] Melts Mushrooms Spread Uproot unless on mycelium or podzol SaplingsPumpkin or Melon stemsBamboo[note 5] Does not grow Grows WheatCarrotsPotatoesBeetroots[note 6] Uproot Does not grow Grows Grass BlockMycelium[note 7] Becomes dirt if opaque block or partially transparent block on top Does not spread Spreads to nearby dirt (see below) Dirt[note 7] Does not accept spread Accepts spread if there is no opaque or semi-transparent block on top Frosted Ice See Frosted Ice for details Daylight detector Output

Rendered brightness[]

Lighting curves. Horizontal axis is block light, vertical is sky light.

The game uses the light level (instead of internal light level), time, and weather to compute the rendered brightness of a given block or an entity. Light is completely monochromatic and cannot be truly colored.

As mentioned above, sky light is not reduced at night, instead, the brightness curve itself changes based on the time. Entities cast circular‌[Java Edition only] or tridecagonal‌[Bedrock Edition only] shadows; however, these are unrelated to the rendering of blocks.

See more: how to get to rev caves | Pink Army

In general, lighting due to blocks results in a higher brightness, which is balanced by the fact that light due to blocks effectively starts at 14 (solid light source blocks emit a level of 15, but that applies to the light source block itself) while sky light brightness is 15 outdoors. Light due to blocks also tends toward orange in the middle ranges, while sky light in the Overworld daytime is white.

In the Overworld with the “Moody” brightness setting, full daylight reaches 98% brightness,[luma 1] while at night brightness is reduced to about 17%[luma 1] and is shaded blue. Full darkness is about 5% brightness.[luma 1]

In the Nether, sky lighting doesn’t play a role since there is no source of sky light (although if there were, it would reach about 99% brightness.[luma 1]) Full darkness with the “Moody” brightness setting is at about 25% brightness,[luma 1] slightly darker than a block light level of 7 and no sky light in the Overworld, and is shaded orange like block light.

In the End, sky lighting wouldn’t play a role even if there were a source of sky light; this can also be seen if lightning is summoned in the End (there is no flash of brightness like there is in other dimensions). Full darkness in the End with the “Moody” brightness setting is about 28% brightness,[luma 1] and is shaded toward a bluish-green rather than the orange of the Nether and of block lighting.

In Java Edition 20w14∞, most unique dimensions have unique lighting system. However, most of the Easter egg dimensions do not have darkness at all. Instead, they are fully bright, but in an Easter egg dimension called gallery has the blue lighting nearly identical to the Overworld at night (only significantly brighter). Easter egg dimensions that resembles the Overworld with just world generation modifications (namely busy, chess, decay, holes, pillars, rooms, slime, and zone) have the same lighting as in the Overworld. blacklight has the inverted lighting system derived from the Overworld. colors, red, green, and blue dimensions resembles the Overworld with lighting mixed with dimensional tinting, and darkness is blended with darkness at higher distances far away from the origin. Its darkness cannot be fixed with Night Vision effect.

Light level of daylight/biome Light level >Biome/time of day v 1-383-744-3087-1016 7 8 9 10 11 12 13 14 15 Overworld (day) Overworld (night, approximate) Blacklight (day) Blacklight (night, approximate)

Smooth lighting[]

The difference between Smooth Lighting on and off.

Smooth lighting is a lighting engine that blends light levels across block faces and darkens corners using ambient occlusion to add semi-realistic shadows and glowing from light sources. It affects only rendered brightness, not the light level, so it has no effect on mob spawning or crop growth, and in fact can be detrimental for this very reason. It is set on by default. Paintings and water surfaces are unaffected.‌[Java Edition only][2]

In Bedrock Edition, smooth lighting can be turned on or off in the Video settings, accessed from the Settings menu. In Java Edition, it has three settings: Maximum, Minimum (an older version of the engine)[3], or Off, and can be changed by accessing Video Options from the Options menu.

Ambient occlusion in Minecraft[]

In recent years, in many games, ambient occlusion is mainly generated dynamically by the GPU. But Minecraft calculates ambient occlusion in the code based on voxel placement and brightness levels.

Ambient occlusion is responsible for adding shading to an ordinary texture. It is a layer of translucent textures, on top of the normal textures. Overlaying these AO textures onto a texture is called AO mapping. There are about five AO texture patterns used in Minecraft’s Smooth lighting, excluding flips and rotations, and only three patterns algorithmically. Strictly speaking, it’s probably more than that. That’s when the intensity changes with the brightness level. But they are solved by Tint.

AO texture pattern[]

If AO mapping is selected only to the northwest of the voxel, the following pattern is possible.

Number Image 0 Aomap example (W).png Aomap example (N).png Aomap example (NW).png 1 Aomap example (nW).png Aomap example (Nw).png Aomap example (n-w).png 2 Aomap example (w).png Aomap example (nw).png Aomap example (n).png 3 Aomap example (none).png

These classifications allow we can deduce a pattern from the placement of each voxel. We then use the following function to compute the opacity of the voxels’ vertices, depending on the presence of the side and corner voxels.

function vertexAO(side1, side2, corner) { return 3 – (side1 + side2 + corner) }

This generates a 2×2 pixel image using the values of each vertex. The pixels are small, but when zoomed in using anti-aliasing, it gradates.

Ao texture (x40).png Ao texture (x40 anti-aliasing).png

History[]

Java Edition pre-Classic Cave game tech testThe lighting engine in Classic was simple, with only two light levels, bright and dark. “Sunlight” is emitted by the top edge of the map and hits any block that is under it, regardless of distance. It passes through transparent blocks to light blocks underneath. Blocks that do not receive light are in a dim shadow that remains at the same level of brightness no matter how far they are from a light source. [needs testing] Java Edition Classic May 26, 2009Notch discussed the feasibility of having dynamic lighting with limited range, allowing possibilities like defining blocks like lava to emit light. Java Edition Indev 1-383-744-3087-1016 1Added 9 degrees of brightness, with a maximum of 9 for full daylight and a minimum of 0 for almost complete darkness. Brightness is a linear scale and represents its value divided by 8; for example 8 is 100% (8⁄8) and 7 is 87.5% (7⁄8).. 20100109There are now 16 degrees of brightness, with a maximum of 15 for full daylight and a minimum of 0 for almost complete darkness. Sunlight now has a maximum light value of 15. 20100204-2Passive mobs now spawn only in higher light levels, and hostile mobs spawn only in the dark. 20100212-1Sunlight’s light value steadily decreases from dusk, until it reaches a night-time minimum value of 4, representing moonlight. Java Edition Alpha ?Lighting is no longer linear. Each brightness value below 15 is 80% as bright as the one above it. For example, 14 is 80% as bright as 15, and 13 is 64% as bright as 15.Sunlight now has its own light array and optimizations to make dawn and dusk smoother. During dusk, nighttime, and dawn, a “darkness” value is subtracted from the sky to create the effects of different times of day. v1.2.0previewAdded the Nether, where light decreases by 10% each level, rather than the normal 20%. Hostile mobs could spawn in higher light levels at lower depths, using the formula 16 − (Layer / 8). At level 8 and below, mobs could spawn even in sunlight. v1.2.1Notch reverted mob spawning to the original method, saying, “It was way too annoying. I have plans on what to do with this.” Java Edition Beta 1.3Smooth lighting engine added with the help of MrMessiah.[4] 1.8Pre-releaseImplemented a new lighting engine. The lighting on a block is given a tint based on the most prominent source of light. Day/night cycles no longer require chunk updates and is a smooth pinkarmy.netficial light now gives a subtle “flicker.”Added void fog, which increases darkness at extreme depths. Java Edition 1.4.212w39aDinnerbone fixed black patches in world generation,[5] and began overhauling the lighting systems such as changing the lighting of blocks to allow for directional lighting.[6][7] 1.513w05aImproved lighting interaction with stairs. 13w06aSeveral lighting optimizations. 13w09aAdded three different levels of smooth lighting: Off, Minimum, and Maximum. Minimum uses the old Smooth Lighting, and Maximum fixes a bug with stairs. 1.7.213w36aBlack patches in world generation and structure generation were made a lot less common.[8] 1.814w30aThe lighting engine was significantly improved, removing most black spots present in world generation. 14w34cThe void fog and particles were removed in order to improve performance. 1.1418w43aThe lighting system has been rewritten. 18w46aAdded support for directional opacity of blocks. 1.14.2pre4All light is now re-calculated the first time a world saved in a previous version is opened. 1.1721w13aAdded light blocks, which helps the placement of light. Pre-release 2Smooth lighting now works properly underwater.[9] Pocket Edition Alpha v0.7.0Added toggleable smooth lighting. v0.8.0build 2Removed the ability to toggle smooth lighting. Pocket Edition 1.1.0alpha 1.1.0.0Readded the Smooth Lighting toggle to Video options.

Issues[]

Issues relating to “Light” are maintained on the bug tracker. Report issues there.

See more: What Can I Use Instead Of An Anvil? 4 Anvil Alternatives

Trivia[]

  • In Minecraft’s source code, the luminescences are defined using the floating point values in the third column. These floating point numbers are fractions of 16, but are multiplied by 15 to get the integer light value. This means that both 0/16 and 1/16 (0.0 and 0.0625) correspond to the integer light value 0.
  • Light level 8 is the only value not produced by any light-emitting blocks, as of Caves & Cliffs Part 1.

References[]

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