Brotli is currently mainly used to compress data such as network assets. AMD engineers decided to open source Brotli-G to speed up compression/decompression on the GPU.

To allow GPU-accelerated Brotli compression and decompression, the AMD engineering team modified Brotli’s bitstream format. Brotli-G allows parallel Huffman substreams, limits the size of compressed blocks, and other simplified bitstream formats to improve GPU performance.

Brotli-G is compiled for Microsoft HLSL shader purposes, allowing use with any graphics card, not just AMD’s graphics card lineup. AMD released the Brotli-G SDK under the MIT license. The Brotli-G SDK includes implementations for CPU and GPU.

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