GL_EXT_texture_compression_bptc
https://www.khronos.org/registry/OpenGL/extensions/EXT/EXT_texture_compression_bptc.txt
GL_EXT_texture_compression_bptc

	GL_COMPRESSED_RGBA_BPTC_UNORM_EXT 0x8E8C
	GL_COMPRESSED_SRGB_ALPHA_BPTC_UNORM_EXT 0x8E8D
	GL_COMPRESSED_RGB_BPTC_SIGNED_FLOAT_EXT 0x8E8E
	GL_COMPRESSED_RGB_BPTC_UNSIGNED_FLOAT_EXT 0x8E8F