Animation placeholder texture

Animated blocks and fluids had backup placeholder textures in terrain.png, overwritten in memory with the generated animations, which would be used if the animated texture could not be loaded.

Info

In some versions, they could be triggered to appear if the game is paused upon first loading the world, which can be done by having another window which is not the game be in focus while the game loads the world.

It is worth noting here that flowing liquids use a texture twice the size of most block textures (32x32 as opposed to the usual 16x16). This is not unique to placeholder textures, and can also be noted when viewing the raw textures for liquids in 13w02a and above, as well as applying internally for generated liquid textures. A larger texture is used here since the texture is rotated accordingly to match the flow direction, while otherwise remaining at the same resolution. As a result, 16x16 textures would be too small to show a continuous texture if rotated at all, as with the most extreme case, a 45 degree rotation, there would be clear gaps at the corners, as one corner to the other would cross 16√2 pixels rather than 16.

Water

Java Edition

When the generated animation was added for water in 0.0.19a, the old water texture used before that point was kept in for use as a placeholder texture.

A second copy of the water texture was added in the 20091223-1 Indev build, which was without a doubt linked to the addition of the flowing water texture.

In the 20100616 build of Infdev, the water placeholder textures were moved to the bottom-right of terrain.png. The still water texture remained as a single texture square, and the flowing water texture became a 2x2 square of water textures, as explained earlier.

With the addition of animated texture images in 13w02a, these textures were decommissioned and removed soon after.

Texture \ Version	Classic	Indev	Infdev
	0.0.19a	0.31	Minecraft Infdev
		20091223-1	20100616
Still
Flowing	-

Bedrock Edition

Due to the first terrain.png in Pocket Edition being based off of the terrain.png from Beta 1.3, both the still and flowing water texture placeholders from said version are there by default. It was used as the water texture on certain devices, seemingly on either very new or very old devices relative to 2011-12. It seems that as of v0.7.0 alpha, the generated water texture would always be used, and the placeholder texture's use in later versions is unknown.

It was updated in v0.10.0 alpha to more closely resemble the generated water texture, becoming opaque as a result.

Texture \ Version	Alpha
	v0.1.0 alpha	v0.10.0 alpha
		build 1
Still
Flowing

Legacy Console Edition

Due to the first terrain.png in Xbox 360 Edition being the same as the terrain.png from Beta 1.6.6, both the still and flowing water texture placeholders from said version are there by default, and would carry on into the other respective consoles. What the water placeholder textures were used for in this edition is unknown.

It was updated in TU25 and equivalent versions to more closely resemble the generated water texture, and was updated again in TU31 and equivalent versions alongside all other translucent textures to appear more translucent.

Texture \ Version	Legacy Console Edition
	360	One	PS	Wii U	Switch	360	One	PS	Wii U	Switch	360	One	PS	Wii U	Switch
	TU0	CU1	1.00	-	-	TU25	CU14	1.17	Patch 1	-	TU31	CU19	1.22	Patch 3	1.0.1
Still
Flowing

Lava

Java Edition

When the generated animation was added for lava in 0.0.19a, the old lava texture used before that point was kept in for use as a placeholder texture.

A second copy of the lava texture was added in the 20100110 Indev build, presumably for flowing lava, despite flowing lava not appearing visually distinct from still lava until the 20100616 build of Infdev. Whether this even represents where flowing lava would be at all, or if versions before 20100110 and inclusively after 20091223-1 would use the same placeholder texture for would-be "flowing" lava (in an identical situation to water) as it would still lava or if it would use the texture at this position instead which was a duplicate of the top of grass at the time, is currently unknown.

In the 20100616 build of Infdev, the lava placeholder textures were moved to the bottom-right of terrain.png. The still lava texture remained as a single texture square, and the flowing lava texture became a 2x2 square of lava textures, as explained earlier.

With the addition of animated texture images in 13w02a, these textures were decommissioned and removed soon after.

Texture \ Version	Classic	Indev	Infdev
	0.0.19a	0.31	Minecraft Infdev
		20100110	20100616
Still
Flowing	-

Bedrock Edition

Due to the first terrain.png in Pocket Edition being based off of the terrain.png from Beta 1.3, both the still and flowing water texture placeholders from said version are there by default. It was used for all lava seemingly regardless of device up until v0.7.0 alpha, when lava became animated on seemingly all devices.

It was updated in v0.14.2 to more closely resemble the generated lava.

Texture \ Version	Alpha
	v0.1.0 alpha	v0.14.2 alpha
Still
Flowing

Legacy Console Edition

Due to the first terrain.png in Xbox 360 Edition being the same as the terrain.png from Beta 1.6.6, both the still and flowing lava texture placeholders from said version are there by default, and would carry on into the other respective consoles. What the lava placeholder textures were used for in this edition is unknown.

It was updated in TU25 and equivalent versions to more closely resemble the generated lava texture.

Texture \ Version	Legacy Console Edition
	360	One	PS	Wii U	Switch	360	One	PS	Wii U	Switch
	TU0	CU1	1.00	-	-	TU25	CU14	1.17	Patch 1	1.0.1
Still
Flowing

Fire

Java Edition

Despite fire being added in early Indev in January, a dedicated placeholder texture for fire was not added until late Infdev in June. Initially, the placeholder texture was a hilarious red-orange scribble, but was changed several days later to a red square with "FIRE TEX! HNST" (Fire texture!, honest!) cut out of it.

In Beta 1.2, a second copy of the placeholder texture was added to terrain.png below the original copy. This is very likely linked to there being two similar but different fire textures, with there now being one placeholder texture each.

Texture \ Version	Infdev		Beta
	Minecraft Infdev		1.2
	20100617-2	20100624
Fire 0
Fire 1	-

Bedrock Edition

Due to the first terrain.png in Pocket Edition being based off of the terrain.png from Beta 1.3, both of the spaces that held fire texture placeholders also hold fire texture placeholders here. Interestingly, however, all of the fire placeholders which exist throughout Pocket Edition are much different from any of those encountered in Java Edition. The first texture, in v0.1.0 alpha, resembles a red U-shape. This texture was quickly changed to a translucent orange texture in v0.1.3 alpha, which, upon further investigation, can be seen to be based off of the water placeholder texture. In v0.8.0 alpha build 1, despite the scrapping of terrain.png, two new fire texture placeholders were created, which could be seen in terrain-atlas.tga, resembling small orange rectangles.

In earlier versions, the fire placeholder texture would appear in front of burning players, successfully functioning as a stand-in for the fire texture. It also appeared as the item texture for fire as an item until v0.7.0 alpha, which made fire render correctly.

Texture \ Version	Alpha
	v0.1.0 alpha	v0.1.3 alpha	v0.8.0 alpha	v0.15.0
			build 1	build 1
Fire 0
Fire 1

Legacy Console Edition

Due to the first terrain.png in Xbox 360 Edition being the same as the terrain.png from Beta 1.6.6, both fire texture placeholders from said version are there by default, and would carry on into the other respective consoles. What the fire placeholder textures were used for in this edition is unknown.

Texture \ Version	Legacy Console Edition
	360	One	PS	Wii U	Switch
	TU0	CU1	1.00	Patch 1	1.0.1
Fire 0
Fire 1

Nether portals

Java Edition

The nether portal placeholder texture was added in Alpha v1.2.0, alongside the nether portal block itself.

Texture \ Version	Alpha
	Alpha v1.2.0
	?
Portal

Bedrock Edition

Due to the first terrain.png in Pocket Edition being based off of the terrain.png from Beta 1.3, the nether portal texture placeholder from said version is there by default. However, due to the absence of nether portals in this version, it remained unused until its removal in v0.8.0 alpha build 2. A second placeholder texture was added when nether portals were actually added in v0.12.1 alpha build 1.

Texture \ Version	Alpha
	v0.1.0 alpha	v0.8.0 alpha	v0.12.1 alpha	v0.15.0
		build 1	build 1	build 1
Portal		-

Legacy Console Edition

Due to the first terrain.png in Xbox 360 Edition being the same as the terrain.png from Beta 1.6.6, the nether portal texture placeholder from said version are there by default, and would carry on into the other respective consoles. What the nether portal placeholder texture was used for in this edition is unknown.

Texture \ Version	Legacy Console Edition
	360	One	PS	Wii U	Switch
	TU0	CU1	1.00	Patch 1	1.0.1
Portal

Gears

Java Edition

The gear placeholder textures were added in the January 28, 2010 build of Indev, alongside gears themselves. There were two gear placeholders, likely corresponding to the two possible rotation directions.

Texture \ Version	Indev
	0.31
	20100128
Clockwise
Anticlockwise

History

Java Edition Classic
0.0.19a					The old textures of water and lava are now used as placeholders.
Java Edition Indev
0.31		20091231-1			Added a second water placeholder texture for flowing water.
		20100110			Added a second lava placeholder texture presumably for flowing lava.
		20100128			Added two identical gear placeholder textures, presumably one per direction.
Java Edition Infdev
Minecraft Infdev		20100616			Placeholder textures for flowing water and lava have been added.
					All fluid placeholder textures are now located at the bottom-right of terrain.png.
		20100617-2			A hilarious placeholder texture for fire has been added.
		20100624			The fire placeholder texture has changed. The text read "FIRE TEX! HNST", which means "Fire texture! Honest".
Java Edition Alpha
v1.0.1					Removed the gear placeholder textures.
v1.2.0		preview			A placeholder texture for nether portals has been added.
Java Edition Beta
1.2					A second copy of fire's placeholder texture has been added. It was used to mark the location of the alternate fire animation, which slightly differs.
Java Edition
1.5		13w02a			With the new native support for animated textures, placeholder textures are no longer needed. The placeholder textures for water, lava, fire and nether portals have been removed.
Pocket Edition Alpha
v0.1.0					Being based off of the Beta 1.3 terrain.png, the water, flowing water, lava, flowing lava, both fires and nether portal placeholder textures are present.
					The nether portal placeholder is unused due to the absence of nether portals, and the fire placeholder has an exclusive texture.
v0.1.3					The fire placeholder texture has changed.
v0.8.0		build 1			With the scrapping of terrain.png and introduction of terrain-atlas.tga, the fire placeholder texture has changed.
					The nether portal placeholder has also been removed as a result.
v0.10.0		build 1			The water placeholder textures have been update to more closely visually resemble the generated water, although opaque.
v0.12.1		build 1			With the introduction of nether portals, there is now a nether portal placeholder texture.
v0.14.2					The lava placeholder textures have been update to more closely visually resemble the generated lava.
v0.15.0		build 1			With the new native support for animated textures, placeholder textures are no longer needed.
Legacy Console Edition
TU0	CU1	1.00			Having the same terrain.png as Beta 1.6.6, the water, flowing water, lava, flowing lava, both fires and nether portal placeholder textures are present.
TU25	CU14	1.17	Patch 1		The water and lava placeholder textures have been updated as to more closely match the generated textures.
TU31	CU19	1.22	Patch 3	1.0.1	All translucent block textures have been made clearer, which includes the water placeholder.