In Minecraft 4k, the grass block has a block ID of 1. It was originally the XOR Block. Unlike normal Minecraft, grass blocks do not turn into dirt when a block is placed above it.
Texture
The texture for the Grass block was generated by the game at runtime (similarly to what was done in Java Edition at that time for water and lava), rather than being stored inside of the jar as an image file.
As with all other block textures in Minecraft 4k, the grass block's textures are generated by going over every pixel in the texture left to right, top to bottom.
For each texture, there is a value that will be called "subTexture".
- subTexture = 0 is the top texture
- subTexture = 1 is the side texture
- subTexture = 2 is the bottom texture
For each pixel, the game generates a new "randomVariation", which is calculated by subtracting a random value from 0 to 95 from 255, resulting in a random value between 160 and 255.
After that, the game does the following algorithm to determine the current pixel's "color".
- The game evaluates ((3x2 + 81x) ÷ 4) & (i ÷ 4 − 1) where x and y are the "index" of the pixels; that is the amount of pixels from the left and topmost pixels respectively, and i is the size of the generated texture. (note that & represents a bitwise AND, and is responsible for keeping the grass color in roughly the top quarter of the block, as well as the pattern that it creates) The output of this operation will be called "grassCheck".
- The game then takes the performs the following comparisons in order:
- If y + i × subTexture < grassCheck + 9⁄8 i, it will set color to
#6AAA40 and proceed to the next step. (does not evaluate the next condition) - If y + i × subTexture < grassCheck + 9⁄8 i + 1, it will set randomVariation to 2⁄3 randomVariation and proceed to the next step. This will "blend" the grass texture into the dirt texture by darkening the dirt below the grass.
- This will also cause the grass generation to fall through into the dirt's texture generator, which sets "color" to
#966C4A
- This will also cause the grass generation to fall through into the dirt's texture generator, which sets "color" to
- If subTexture is 0, the first condition will always be met, and if subTexture is 2, both conditions will be not be met.
- If y + i × subTexture < grassCheck + 9⁄8 i, it will set color to
- The game then creates a new value, that will be called "randomVariationWithBlockSideLight", where
- If subTexture = 2 (the bottom texture) set randomVariationWithBlockSideLight to randomVariation ÷ 2.
- Else, set randomVariationWithBlockSideLight to randomVariation.
- The game multiplies each of "color"'s RGB channels by randomVariationWithBlockSideLight to get the final RGBA color of the pixel on the texture.[1]
Data values
ID
| Name | Numeric ID | Form |
|---|---|---|
 [No displayed name] | 1 | Block |
History
Gallery
Textures
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Top texture -
Side texture -
Bottom texture
