Texture formats overview
From FSDeveloper Wiki
Placeholder text for a Texture Types overview doc.
Edit for FS applicability.
S3TC Format Comparison
DXT4/5 use an interpolated alpha scheme, they generally produce superior results for alpha (transparency) gradients than DXT2/3.
Some consider DXT5 to be the most flexible general purpose compression codec.
| FOURCC | Description | Alpha premultiplied? | Compression ratio | Texture Type |
|---|---|---|---|---|
| DXT1 | 1-bit Alpha / Opaque | N/A | 8:1 | Simple non-alpha |
| DXT2 | Explicit alpha | Yes | 4:1 | Sharp alpha |
| DXT3 | Explicit alpha | No | 4:1 | Sharp alpha |
| DXT4 | Interpolated alpha | Yes | 4:1 | Gradient alpha |
| DXT5 | Interpolated alpha | No | 4:1 | Gradient alpha |
