Texture formats overview: Difference between revisions
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Some consider DXT5 to be the most flexible general purpose compression codec. | Some consider DXT5 to be the most flexible general purpose compression codec. | ||
{| class="wikitable" | {| class="wikitable" | ||
|----- align=" | |----- align="left" | ||
! FOURCC | ! FOURCC | ||
! FS versions | |||
! Description | ! Description | ||
! Alpha premultiplied? | ! Alpha premultiplied? | ||
! Compression ratio | ! Compression ratio | ||
! Texture Type | ! Texture Type | ||
|----- align=" | |----- align="left" | ||
| DXT1 || 1-bit Alpha / Opaque || N/A || 8:1 || Simple non-alpha | | DXT1 || All || 1-bit Alpha / Opaque || N/A || 8:1 || Simple non-alpha | ||
|----- align=" | |----- align="left" | ||
| DXT2 || Explicit alpha || Yes || 4:1 || Sharp alpha | | DXT2 || Not supported || Explicit alpha || Yes || 4:1 || Sharp alpha | ||
|----- align=" | |----- align="left" | ||
| DXT3 || Explicit alpha || No || 4:1 || Sharp alpha | | DXT3 || All || Explicit alpha || No || 4:1 || Sharp alpha | ||
|----- align=" | |----- align="left" | ||
| DXT4 || Interpolated alpha || Yes || 4:1 || Gradient alpha | | DXT4 || Not supported || Interpolated alpha || Yes || 4:1 || Gradient alpha | ||
|----- align=" | |----- align="left" | ||
| DXT5 || Interpolated alpha || No || 4:1 || Gradient alpha | | DXT5 || FSX only || Interpolated alpha || No || 4:1 || Gradient alpha | ||
|} | |} | ||
Revision as of 15:59, 24 January 2008
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 | FS versions | Description | Alpha premultiplied? | Compression ratio | Texture Type |
|---|---|---|---|---|---|
| DXT1 | All | 1-bit Alpha / Opaque | N/A | 8:1 | Simple non-alpha |
| DXT2 | Not supported | Explicit alpha | Yes | 4:1 | Sharp alpha |
| DXT3 | All | Explicit alpha | No | 4:1 | Sharp alpha |
| DXT4 | Not supported | Interpolated alpha | Yes | 4:1 | Gradient alpha |
| DXT5 | FSX only | Interpolated alpha | No | 4:1 | Gradient alpha |
