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Safe Compression Commit

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Only a single program was used to safely compress all textures in MTG.

This was done using optipng with the following settings:

```
optipng -o7 -zm1-9 -nc -strip all -clobber %%f
```

The key command used is -nc, which stops color mode changes. I.e. any RGBA textures will remain RGBA textures, with none being changes to 8-bit indexed mode.

The resulting compression:

| type | size (Bytes) | % of original texture size |
| --- | --- | --- |
| Original | 247,571 | 100% |
| Compressed | 152,189 | 61.5% |

**Summary: Saves 93.14 KB**

A script has been added: utils/optimize_textures.sh which will perform this compression automatically, assuming optipng is installed.
This commit is contained in:
ExeVirus 2021-01-23 16:03:00 -05:00 • committed by Dallas DeBruin
parent 624dafc12b
commit 454bb6dc7f
228 changed files with 6 additions and 0 deletions
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utils/optimize_textures.sh Normal file
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#!/bin/bash
# Colors with 0 alpha need to be preserved, because opaque leaves ignore alpha.
# For that purpose, the use of indexed colors is disabled (-nc).
find -name '../*.png' -print0 | xargs -0 optipng -o7 -zm1-9 -nc -strip all -clobber