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real time ASTC texture compression by computer shader

用d3d compute shader实时压缩astc纹理，实现的是ASTC的一个子集。

• texture compress in realtime
• astc4x4
• astc6x6
• alpha channel
• normal map
• compress in linear or srgb space

• d3d11

• stb_image.h - for image loading

astc_encoder v1.0

astc_cs_enc.exe input_texture option_args

example

astc_cs_enc.exe ./textures/leaf.png -alpha -4x4 -srgb

see more https://niepp.github.io/2021/12/18/Compute-ASTC.html