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Model Gap Fix

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Description

Model Gap FIX

 

This is a simple client mod that (attempts) fixes https://bugs.mojang.com/browse/MC-73186

which affects both Block Models and Item Models and possibly other models too

 

The mod works by removing texture zooming, making every model face use 100% of its texture, unlike of what it did previoulsly.

Thisnot only fixes this bugs on items (where it's most noticeable) but with block models too and everything else that might use those functions.

 

This issue was especially noticeable with custom block models or some 2d items.

 

 

Q&A:

- Will this slow down my game? 

Not at all! Removing texture zooming just removes some code and has no impact. If you however want to be nit picky the mod also slightly tweaks item models in a way that could add a ouple more quads for concave item textures compared to vanilla so in that case it could very slightly worse that vanilla. This is however negligible and could only be an issue when trying to run high resolution packs

- How does this work?

The base fix is simply removing texture zooming. This is extremly simple to do and immediately "fixes up" all those problematic gaps on models.

Such a feature was in the game to prevent an artifact called "atlas bleeding" which makes the edges of a texture bleed into the one next to it on the texture atlas. From my testing however this issue isnt present for most hardwares so the mod just gets rid of it. If you experience such an issue just uninstall the mod. Note that it has been reported that on many mac os such an issue is present so the mod "takes care" of that by simply disabling its main fix only keeping the slight item model adjustment. This isnt ideal but can somewhat reduce the gaps altho just in item models
For 2d item models something else is needed as this alone creates another kind of tiny gaps in them due to the way they are generated, quad by quad. These are very tiny and they flicker so I had to fix those too. To do so I've changed the item model generator to never create a quad that encompasses a transparent pixel and instead create multiple quads for each row of solid pixel in the same direction. This allows me to slightly increase the size of all these side quads without creating new gaps in the process, thus covering all gaps seamlessly. Note that this last part only applies to forge as fabric does not seem to have such tiny lines and the models work right away with no extra quad

 

- I still see some lines

 

If you do these are different from the ones that you would normally see and usually are extremely tiny in the range of single pixels. From my understanding these appear due to some rounding errors and vary on the system you are in. To get rid of them you can access the mod configs and slightly tweak the 2 values until they disappear