Two textures with same size seem to have different scaling when blending them in tilemap shader

[ruemart]

Godot Version

4.2

Question

I have a tilemap that shows sand and I want to create a wet effect using a shader. My idea is to mix from the normal tilemap to the wet one using the mix function (so that I can use tweens to create a transition from dry to wet).
The problem is that the wet texture, although it has exactly the same dimensions, still seems to have a different scale. This creates an unwanted zoom effect when fading back and forth.
I attached the shader to the tilemap and not to each tile itself (although this seems to have the same effect).

[flamelizard]

Hey there, try disabling the „Repeat“ option in the TextureParameter Node as well as setting the „Type“ from “Data” to “Color”.

[ruemart]

Hey, thanks for your answer! I tried the things you suggested however it didn’t change anything.

[zdrmlpzdrmlp]

tested but i dont get the scaled unwanted zoom by changing the float value

float 1

float 0.5

BUT when i try to add the texture from here:

with a bit cropped image of itself, the image changed

so i assume you will need to have both image of the tile and the input texture to be exact same resolution to make it work

testing it on real tilesets (GIF):

disabled the Use Texture Padding
seems to have resolved the random scaling, but there’s still a bit difference in zoomed

Edit: changing the tilemap Texture Filter to Nearest now fixed the “a bit difference”

but really disabling the Use Texture Padding should fix your issue

[ruemart]

Thank you very much
Disabling Texture Padding did the trick.