Implement native Display P3 color space support#62
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This adds native Display P3 wide-gamut support across TargetBridge: 1. Configures SCStreamConfiguration to capture desktop frames in P3. 2. Passes P3 CGColorSpace to CGDisplayStream properties for Direct Display Mode. 3. Tags VTCompressionSession with Display P3 primaries, Rec. 709 transfer characteristics, and Rec. 709 YCbCr matrix VUI parameters. 4. Uses pure-C Objective-C runtime functions on macOS to assign the native [NSColorSpace displayP3ColorSpace] to the receiver's Cocoa NSWindow.
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Test page: https://webkit.org/blog-files/color-gamut/ Not working yet: On the receiver iMac 2020 I can't see the webkit logo on Display P3. |
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This adds native Display P3 wide-gamut support across TargetBridge.
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Receiver (C)
No CPU/GPU or network bandwidth overhead is introduced since it remains an 8-bit SDR profile.