Sergey Sharybin
df751516e1
The DWA compression code in OpenEXR has hardcoded rules which decides which channels are lossy or lossless. There is no control over these rules via API. This change makes it so channel names of xyzw is used for cryptomatte passes in Cycles. This works around the hardcoded rules in the DWA code making it so lossless compression is used. It is important to use lower case y channel name as the upper case Y uses lossy compression. The change in the channel naming also makes it so the write code uses 32bit for the cryptomatte even when saving half-float EXR. Fixes T96933: Cryptomatte layers saved incorrectly with EXR DWA compression Fixes T88049: Cryptomatte EXR Output Bit Depth should always be 32bit Differential Revision: https://developer.blender.org/D15823
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