Scarfski/basis_universal
1
0
Fork 0
mirror of https://github.com/BinomialLLC/basis_universal.git synced 2026-06-08 00:23:52 +00:00
Code Issues Packages Projects Releases Wiki Activity

Merge remote-tracking branch 'origin/master'

Browse Source
This commit is contained in:
Richard Geldreich
2026-02-13 23:15:32 -05:00
parent 554aad81bf 8c42192979
commit a11b218402
2 changed files with 9 additions and 3 deletions
Download Patch File Download Diff File Expand all files Collapse all files

10
README.md
View File

@@ -1,5 +1,5 @@
# basis_universal v2.0
An LDR/HDR portable GPU supercompressed texture transcoding system.
An LDR/HDR portable GPU supercompressed texture transcoding system.
[![Build status](https://img.shields.io/appveyor/build/BinomialLLC/basis-universal/master.svg)](https://ci.appveyor.com/project/BinomialLLC/basis-universal)
@@ -8,9 +8,11 @@ An LDR/HDR portable GPU supercompressed texture transcoding system.
Intro
-----
Basis Universal™ v2.0 is an open source [supercompressed](http://gamma.cs.unc.edu/GST/gst.pdf) LDR/HDR GPU compressed texture interchange system from Binomial LLC that supports two intermediate file formats: the [.KTX2 open standard from the Khronos Group](https://registry.khronos.org/KTX/specs/2.0/ktxspec.v2.html), and our own ".basis" file format. These file formats support rapid transcoding to virtually any compressed [GPU texture format](https://en.wikipedia.org/wiki/Texture_compression) released over the past quarter century.
Basis Universal™ v2.0 is an open source [supercompressed](http://gamma.cs.unc.edu/GST/gst.pdf) LDR/HDR GPU compressed texture interchange system from Binomial LLC that supports two intermediate file formats: the [.KTX2 open standard from the Khronos Group](https://registry.khronos.org/KTX/specs/2.0/ktxspec.v2.html), and our own ".basis" file format. These file formats support rapid transcoding to virtually any compressed [GPU texture format](https://en.wikipedia.org/wiki/Texture_compression) released over the past quarter century.
Our overall goal is to simplify the encoding and efficient distribution of *portable* LDR and HDR GPU texture, image, and short [texture video](https://github.com/BinomialLLC/basis_universal/wiki/Encoding-ETC1S-Texture-Video-Tips) content in a way that is compatible with any GPU or rendering/graphics API.
## GPU Textures are Infrastructure
Our overall goal is to simplify the encoding and efficient distribution of *portable* LDR and HDR GPU texture, image, and short [texture video](https://github.com/BinomialLLC/basis_universal/wiki/Encoding-ETC1S-Texture-Video-Tips) content in a way that is compatible with any GPU or rendering/graphics API.
The system supports seven modes (or codecs). In the order they were implemented:
1. **ETC1S**: A supercompressed subset of ETC1 designed for very fast transcoding to other LDR texture formats, low/medium quality but high compression, slightly faster transcoding to other LDR texture formats vs. libjpeg.
@@ -159,6 +161,8 @@ chmod +x runwt.sh
./runwt.sh tough.ktx2
```
Unfortunately, 32-bit WASM WASI executables have tradeoffs vs. native executables: Limited memory, and slower performance (somewhat mitigatable using WASM threading, which we support). 32-bit WASM WASI memory constraints limit the maximum image/texture size that can be compressed to ASTC LDR or XUASTC LDR to around 4 megapixels. (The other codecs have lower memory requirements.) For Web, we support both WASM and WASM64 (with or without threading), which greatly improves the WASM memory situation. As far as we know as of 2/2026, the WASI SDK still [doesn't officially support the wasm64-wasi target](https://github.com/WebAssembly/wasi-sdk/issues/212), but once it does we'll support it.
----
Building (Native)

2
shader_deblocking/README.md
View File

@@ -1,5 +1,7 @@
# Python+GLSL Shader Deblocking Sample
*Block boundaries are predictable.*
This sample demonstrates how to use a simple pixel shader to greatly reduce
ASTC texture block artifacts, which can be quite noticeable when the block size goes
beyond roughly 6x6. The basic idea: instead of always sampling the texture using