KhronosGroup / KhronosGroup/KTX-Software

Add BC7 encoder with RDO

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enhancement help wanted
Dominant language
C++
Stars
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Forks
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Avg merge
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Merged PRs (30d)
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Description

We want to add BC7 encoding to the library with RDO (Rate-Distortion Optimization) to take better advantage of zstd supercompression. Rich Geldreich's open source Apache 2.0-licensed encoder at https://github.com/richgel999/bc7enc_rdo is a good candidate. The addition should follow the same model as the ASTC encoder.

Contributor guide

Open the contributing guide

First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start by studying the existing ASTC encoder integration and the referenced bc7enc_rdo project, including its RDO approach and Apache 2.0 license. Done means the library has BC7 encoding with RDO integrated according to the ASTC encoder model and suitable for zstd supercompression.

Written by the indexing model from the issue text.

Assessment

Tech stack
cpp
Domain
computer-graphics
Issue type
Feature
Difficulty
5/5
Estimated time
Over a week
Activity status
Stale
Clarity
Mostly clear
Newbie friendliness
30/100

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