H‐ETC2: Design of a CPU‐GPU Hybrid ETC2 Encoder

Abstract

AbstractThis paper proposes a novel CPU‐GPU hybrid encoding method based on the ETC2 format, commonly used on mobile platforms. Traditional texture compression techniques often face a trade‐off between encoding speed and quality. For a better trade‐off, our approach utilizes both the CPU and GPU. In a pipeline we designed, the CPU encoder identifies problematic pixel blocks during the encoding process, and the GPU encoder re‐encodes them. Additionally, we carefully improve the base CPU and GPU encoders regarding encoding speed and quality. As a result, our encoder minimizes compression artifacts, increases encoding speed, or achieves both of these goals compared to previous high‐quality offline ETC2 encoders.