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compression.\nImplementations manage this transparently to applications, which is possible since the output is bit-exact.\n(The use of image compression (or not) can result in performance differences that are visible in profiling tools etc.)",{"type":1893,"tag":1894,"props":1912,"children":1913},{},[1914],{"type":1898,"value":1915},"Fixed-rate compression formats have so far not been supported.\nAs the term implies, these compression techniques are done at defined bitrates, and may therefore lose information compared to an uncompressed result.\nSince results are generally not bit-exact when compared to an uncompressed result, we do not want implementations to enable these algorithms without application opt-ins.",{"type":1893,"tag":1894,"props":1917,"children":1918},{},[1919],{"type":1898,"value":1920},"The fixed-rate compression algorithms are implementation-specific and not standardized.\nWe want to expose an API mechanism that abstracts the implementation-specific 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Options that were considered:",{"type":1893,"tag":1938,"props":1968,"children":1969},{},[1970,1975,1980,1985,1990],{"type":1893,"tag":1942,"props":1971,"children":1972},{},[1973],{"type":1898,"value":1974},"Describe them as bytes per 'block' of compressed data. We would likely need to describe the dimensions of each block as well as the size.",{"type":1893,"tag":1942,"props":1976,"children":1977},{},[1978],{"type":1898,"value":1979},"Describe them as percentages of the uncompressed size. The percentages would not always be integer sizes and hard to express as enumerants.",{"type":1893,"tag":1942,"props":1981,"children":1982},{},[1983],{"type":1898,"value":1984},"Describe them informally as low, medium, high. This would not be very informative.",{"type":1893,"tag":1942,"props":1986,"children":1987},{},[1988],{"type":1898,"value":1989},"Describe them as bits per pixel. 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