On Wed, 5 Feb 2020 13:28:10 +0530 Raghu Kadari <raghuram0...@gmail.com> wrote:
> Hi Paalanen, > > Thanks for the reply ! would like to confirm below. > > How can I check the Alpha channel of the final output of the weston. Is > there way I can check this information from the console? Hi, if you happen to be using GL-renderer, there is something like this in the log: [12:41:04.152] Chosen EGL config details: id: 6 rgba: 8 8 8 0 buf: 24 dep: 0 stcl: 0 int: 1-1 type: win vis_id: XRGB8888 (0x34325258) However, that's only the renderer config. Even if it has an alpha channel, I think the DRM-backend will still substitute XRGB in the FB format since it knows the renderer produces an opaque image. Other than that, not in Weston I think. If you explained what you actually want to achieve, people might be able to offer you more helpful answers. Weston has been deliberately designed to produce an opaque image because we don't have see-through monitors. Thanks, pq
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