Re: [Cin] 10bit display links

[Andrea paz via Cin]

(EE)
Fatal server error
(EE) Unrecognized Option: --depth
-- 
Cin mailing list
Cin@lists.cinelerra-gg.org
https://lists.cinelerra-gg.org/mailman/listinfo/cin

Re: [Cin] 10bit display links

[Andrew Randrianasulu via Cin]

чт, 1 июн. 2023 г., 19:12 Andrea paz :

> I don't think it depends on CinGG. Even Steam has problems with 10-bit
> (crashes!). Other programs (Firefox) show no difference between 8 and
> 10-bit, and others work fine at 10-bit (mpv). No differences both X11
> and X11-OpenGL. I think the basis is always the lack of color
> management of various programs.
>


Not exactly color management as ICC profile application but basic fact
images use 10 bits where they used to have just 8 per channel!


To create a new X server: sorry; you ask too much of my rusty little
> brain! Anyway it's a matter of renaming the 20-amd.conf file to
> 20-amd.conf.back and rebooting, it's not very long.
>

I think you can try and start second X like this:

X :1 --depth 30 &
-- 
Cin mailing list
Cin@lists.cinelerra-gg.org
https://lists.cinelerra-gg.org/mailman/listinfo/cin

Re: [Cin] 10bit display links

[Andrea paz via Cin]

I don't think it depends on CinGG. Even Steam has problems with 10-bit
(crashes!). Other programs (Firefox) show no difference between 8 and
10-bit, and others work fine at 10-bit (mpv). No differences both X11
and X11-OpenGL. I think the basis is always the lack of color
management of various programs.
To create a new X server: sorry; you ask too much of my rusty little
brain! Anyway it's a matter of renaming the 20-amd.conf file to
20-amd.conf.back and rebooting, it's not very long.
-- 
Cin mailing list
Cin@lists.cinelerra-gg.org
https://lists.cinelerra-gg.org/mailman/listinfo/cin

Re: [Cin] 10bit display links

[Andrew Randrianasulu via Cin]

чт, 1 июн. 2023 г., 14:42 Andrea paz :

> CinGG in my Arch to 10-bit depth color:
> https://postimg.cc/YvkPnzSh
>
> :-)
>

this is with output x11-opengl ?

I think I logged such bug in BT some time ago
https://www.cinelerra-gg.org/bugtracker/view.php?id=297

still not sure how to move forward. I found 8bit rgb - 10bit rgb
conversion route, just not sure how to add it to list of pixel conversion
.../

wget https://bugzilla.gnome.org/attachment.cgi?id=196321

===
>From fb01c5ea4c5b9f0c2b0d2b2d9c926cf1caea27c0 Mon Sep 17 00:00:00 2001
From: Damien Leone 
Date: Mon, 12 Sep 2011 09:53:00 -0700
Subject: [PATCH] Bug 625202 - 30-bit drawables remain black

This patch adds support for 10-10-10 bitmask BGR conversion at
depths 30 and 32 by preventing gdk_rgb_select_conv() from failing
back to the gdk_rgb_convert_32_generic() conversion function.

   Since GdkImage codes R, G and B channels in a char,
we replicate   the two most significant bits to the two least significant
ones such that all 10 bits are used (i.e. all bits are set to 1 for  white
color).


/* Since the R, G and B channels are coded in a char, we
+  * replicate the two most significant bits to the two
least
+  * significant ones. */

+ *((guint32*)p) = 0x3 << 30 |
+   b << 22 | (b >> 6) << 20 |
+   g << 12 | (g >> 6) << 10 |
+   r << 2  | (r >> 6);


I wonder if you can set second X server with color depth 30 and switch
between them on the fly? (ctrl-alt-f7/f8)

I also wonder if Arch have this patch already?
-- 
Cin mailing list
Cin@lists.cinelerra-gg.org
https://lists.cinelerra-gg.org/mailman/listinfo/cin

Re: [Cin] 10bit display links

[Andrea paz via Cin]

CinGG in my Arch to 10-bit depth color:
https://postimg.cc/YvkPnzSh

:-)
-- 
Cin mailing list
Cin@lists.cinelerra-gg.org
https://lists.cinelerra-gg.org/mailman/listinfo/cin