You are confusing "32-bit colour" with "32 bits per channel'. ...which is very easy to do admittedly. 32 bit color is just 8 bits per channel times each channel in RGBA - R8+G8+B8+A8 = 32. The GameCube uses "24 bit colour", which is 6 bits per channel RGBA. HDR10, on the other hand, has 10 bits per channel RGBWA.
I wrote about this whole confusion and why these standards occurred this way here - https://forums.dolphin-emu.org/Thread-feature-request-hdr-support?pid=470425#pid470425
I wrote about this whole confusion and why these standards occurred this way here - https://forums.dolphin-emu.org/Thread-feature-request-hdr-support?pid=470425#pid470425
![[Image: RPvlSEt.png]](https://i.imgur.com/RPvlSEt.png)
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