May I ask why Apple don't support IMG_texture_compression_pvrtc2 (https://www.khronos.org/registry/gles/extensions/IMG/IMG_texture_compression_pvrtc2.txt) when most of their hardware is capable of this PVRTC2 compression which has much better quality, sharper edges and can use NPOT textures?
IMG_texture_compression_pvrtc2
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