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color-representation: new protocol

Simon Ser requested to merge emersion/wayland-protocols:ycbcr-conversion into main

This new protocol extension allows clients to specify color representation metadata. This is orthogonal to color management, which will be implemented as a separate protocol extension.

This work is based on:

  • EGL_EXT_image_dma_buf_import 1, although this specification doesn't provide enough guarantees for the purposes of this protocol.
  • VK_KHR_sampler_ycbcr_conversion 2.
  • The KMS "COLOR_ENCODING" and "COLOR_RANGE" properties 3.

Signed-off-by: Simon Ser
References: !14 (comment 805414)

cc @pq @swick @vitalyp @hwentland

Edited by Simon Ser

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