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Add wlr_output_layer

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This is based on previous work [1] [2].

This new API allows compositors to display buffers without needing to
perform rendering operations. This API can be implemented on Wayland
using subsurfaces and on DRM using KMS planes.

Compared to [1], this approach leverages wlr_addon_set to let backends
attach their own private state to layers, removes the pending
state (necessary for interop with wlr_output_commit_state()) and
enum wlr_output_layer_state_field.

[1]: https://gitlab.freedesktop.org/wlroots/wlroots/-/merge_requests/1985
[2]: https://gitlab.freedesktop.org/wlroots/wlroots/-/merge_requests/3447
This commit is contained in:
Simon Ser 2022-06-28 18:22:42 +02:00
parent 0335ae9566
commit 2f29b0c438
6 changed files with 124 additions and 1 deletions
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3
include/wlr/interfaces/wlr_output.h
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@ -22,7 +22,8 @@
WLR_OUTPUT_STATE_SCALE | \
WLR_OUTPUT_STATE_TRANSFORM | \
WLR_OUTPUT_STATE_RENDER_FORMAT | \
WLR_OUTPUT_STATE_SUBPIXEL)
WLR_OUTPUT_STATE_SUBPIXEL | \
WLR_OUTPUT_STATE_LAYERS)
/**
* A backend implementation of struct wlr_output.