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Document lossless WebP (3.4) #4839

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Jul 26, 2021
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Document lossless WebP (3.4) #4839

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32 changes: 17 additions & 15 deletions getting_started/workflow/assets/importing_images.rst
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Original file line number Diff line number Diff line change
Expand Up @@ -28,6 +28,8 @@ Godot can import the following image formats:
For complex vectors, rendering them to PNGs using Inkscape is often a better solution.
This can be automated thanks to its `command-line interface <https://wiki.inkscape.org/wiki/index.php/Using_the_Command_Line#Export_files>`__.
- WebP (``.webp``)
- WebP files support transparency and can be compressed lossily or losslessly.
The precision is limited to 8 bits per channel.

.. note::

Expand Down Expand Up @@ -78,21 +80,21 @@ Compress Mode
In this table, each of the four options are described together with their
advantages and disadvantages (|good| = best, |bad| = worst):

+----------------+------------------------+---------------------------+-------------------------+------------------------------------------------------+
| | Uncompressed | Compress Lossless (PNG) | Compress Lossy (WebP) | Compress VRAM |
+================+========================+===========================+=========================+======================================================+
| Description | Stored as raw pixels | Stored as PNG | Stored as WebP | Stored as S3TC/BC or PVRTC/ETC depending on platform |
+----------------+------------------------+---------------------------+-------------------------+------------------------------------------------------+
| Size on Disk | |bad| Large | |regular| Small | |good| Very Small | |regular| Small |
+----------------+------------------------+---------------------------+-------------------------+------------------------------------------------------+
| Memory Usage | |bad| Large | |bad| Large | |bad| Large | |good| Small |
+----------------+------------------------+---------------------------+-------------------------+------------------------------------------------------+
| Performance | |regular| Normal | |regular| Normal | |regular| Normal | |good| Fast |
+----------------+------------------------+---------------------------+-------------------------+------------------------------------------------------+
| Quality Loss | |good| None | |good| None | |regular| Slight | |bad| Moderate |
+----------------+------------------------+---------------------------+-------------------------+------------------------------------------------------+
| Load Time | |regular| Normal | |bad| Slow | |bad| Slow | |good| Fast |
+----------------+------------------------+---------------------------+-------------------------+------------------------------------------------------+
+----------------+------------------------+-------------------------------+-------------------------+------------------------------------------------------+
| | Uncompressed | Compress Lossless | Compress Lossy | Compress VRAM |
+================+========================+===============================+=========================+======================================================+
| Description | Stored as raw pixels | Stored as Lossless WebP / PNG | Stored as Lossy WebP | Stored as S3TC/BC or PVRTC/ETC depending on platform |
+----------------+------------------------+-------------------------------+-------------------------+------------------------------------------------------+
| Size on Disk | |bad| Large | |regular| Small | |good| Very Small | |regular| Small |
+----------------+------------------------+-------------------------------+-------------------------+------------------------------------------------------+
| Memory Usage | |bad| Large | |bad| Large | |bad| Large | |good| Small |
+----------------+------------------------+-------------------------------+-------------------------+------------------------------------------------------+
| Performance | |regular| Normal | |regular| Normal | |regular| Normal | |good| Fast |
+----------------+------------------------+-------------------------------+-------------------------+------------------------------------------------------+
| Quality Loss | |good| None | |good| None | |regular| Slight | |bad| Moderate |
+----------------+------------------------+-------------------------------+-------------------------+------------------------------------------------------+
| Load Time | |regular| Normal | |bad| Slow | |bad| Slow | |good| Fast |
+----------------+------------------------+-------------------------------+-------------------------+------------------------------------------------------+

.. |bad| image:: img/bad.png

Expand Down