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| author | Simon Ser <contact@emersion.fr> | 2021-10-31 12:10:08 +0100 |
|---|---|---|
| committer | Simon Ser <contact@emersion.fr> | 2021-11-04 08:53:47 +0000 |
| commit | ebfc70cdf7c63082e2c9cccf47f0616a2e8969b0 (patch) | |
| tree | 0e7194c394fc12970091432ba1a09d5deebcc86e /protocol | |
| parent | debug: Fix printing of new ids (diff) | |
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protocol: wl_shm uses pre-multiplied alpha
Add a note about pre-multiplied alpha for all wl_shm formats.
Include an escape hatch in the spec to allow other protocol
extensions to override this.
Signed-off-by: Simon Ser <contact@emersion.fr>
Closes: https://gitlab.freedesktop.org/wayland/wayland/-/issues/61
Diffstat (limited to 'protocol')
| -rw-r--r-- | protocol/wayland.xml | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/protocol/wayland.xml b/protocol/wayland.xml index e3dab2e..4e59c3a 100644 --- a/protocol/wayland.xml +++ b/protocol/wayland.xml @@ -296,6 +296,9 @@ The drm format codes match the macros defined in drm_fourcc.h, except argb8888 and xrgb8888. The formats actually supported by the compositor will be reported by the format event. + + For all wl_shm formats and unless specified in another protocol + extension, pre-multiplied alpha is used for pixel values. </description> |