MC-140709Features sometimes disappear on zoomed maps, especially over water
When a map is zoomed out, the colour that is assigned to the pixel does not take all blocks in that location into consideration. Usually, it just assigns the colour of the most common block. This can cause anomalies such as bridges disappearing over water. See screenshot for an example.
What should happen instead is that all blocks in that location contribute equally to the colour of the pixel and the assigned colour of the pixel is the average of all blocks in that location. This will make features show up more consistently and make zoomed out maps look less blotchy.
Created Issue:
Features sometimes disappear on zoomed maps, especially over water
When a map is zoomed out, the colour that is assigned to the pixel does not take all blocks in that location into consideration. Usually, it just assigns the colour of the most common block. This can cause anomalies such as bridges disappearing over water. See screenshot for an example.
What should happen instead is that all blocks in that location contribute equally to the colour of the pixel and the assigned colour of the pixel is the average of all blocks in that location. This will make features show up more consistently and make zoomed out maps look less blotchy.
Attachments1
![[Mojang] Nathan Adams](../../../data/assets/gravatar/dinnerbone.png){kind=small}
![[Mod] Michael Wobst](../../../data/avatars/users/37868.png){kind=small}
![[Bot] Arisa](../../../data/assets/gravatar/mustek2.png){kind=small}
Is this still an issue in the most recent versions (currently that is 1.15, or the latest pre-release 1.15.1-pre1) of Minecraft? If so, please update the affected versions and help us keeping this ticket updated from time to time. If you are the owner/reporter of this ticket, you can modify the affected version(s) yourself.
![[Mod] Jiingy](../../../data/avatars/users/91802.png){kind=small}
The attached image "map-bug.png" shows the difference between a map created with the old map code (top) and the same map when re-explored with 1.13.2 (bottom). At the top of the map is a feature (a horizontal line marking a minecart railway) that shows clearly on the old map and is then partially erased when the area is explored.
Affects 1.15.1.
For ease of replication, I have created a simple test world with maps. This test world is attached as MC140709.zip. Areas of concrete five wide are placed with eight blocks separating them. One of the areas is solid black, the other is striped. The striped area does not appear properly on zoomed out maps. Five maps of the area are provided, one for each zoom level. MC140709.zip
Hi there!
Is this still an issue in release 1.16.1 or snapshot 20w30a?
Affects 1.16.1. To see this, load the test world in "MC140709.zip" and view the maps.