1 files changed, 50 insertions, 0 deletions
diff --git a/net-print/libcupsfilters/files/libcupsfilters-2.0.0-raster-gray.patch b/net-print/libcupsfilters/files/libcupsfilters-2.0.0-raster-gray.patch
new file mode 100644
index 000000000000..e1648c041e97
--- /dev/null
+++ b/net-print/libcupsfilters/files/libcupsfilters-2.0.0-raster-gray.patch
@@ -0,0 +1,50 @@
+https://bugs.gentoo.org/927137
+https://github.com/OpenPrinting/cups-filters/issues/578
+https://github.com/OpenPrinting/libcupsfilters/commit/78cc6758d98c31397c8addefaa3dfd8746331b72
+
+From 78cc6758d98c31397c8addefaa3dfd8746331b72 Mon Sep 17 00:00:00 2001
+From: zdohnal <zdohnal@redhat.com>
+Date: Thu, 7 Mar 2024 18:27:06 +0100
+Subject: [PATCH] raster.c: Always use sRGB/sGray if driver is PWG/URF and
+ RGB/Gray is requested (#51)
+
+Some driverless printers (EPSON L3160 in Fedora report) stopped working
+after commit c6175a2 if `ColorModel=RGB` is passed as option. A
+different CUPS color space is assigned with the fix - CUPS_CSPACE_RGB,
+which results in no ICC profile being assigned into Ghostscript command
+line.
+
+Probably we can try other .icc profiles with CUPS_CSPACE_RGB (srgb.icc
+does not work with RGB color space), but I tested with reporter that
+using sRGB space + srgb.icc works for the printer - so the patch is to
+use sRGB if the driver is URF/PWG.
+
+Same logic applied for grayscale printing, if Gray is requested, sGray is
+used for URF/PWG.
+---
+ cupsfilters/raster.c | 4 ++--
+ 1 file changed, 2 insertions(+), 2 deletions(-)
+
+diff --git a/cupsfilters/raster.c b/cupsfilters/raster.c
+index e9a8ad1f..7b62b922 100644
+--- a/cupsfilters/raster.c
++++ b/cupsfilters/raster.c
+@@ -1550,7 +1550,7 @@ raster_base_header(cups_page_header_t *h,  // O - Raster header
+     {
+       if (*(val + 4) == '_' || *(val + 4) == '-')
+ 	ptr = val + 5;
+-      colorspace = 18;
++      colorspace = pwg_raster ? 18 : 3;
+       numcolors = 1;
+     }
+     else if (is_color && !strncasecmp(val, "Srgb", 4))
+@@ -1571,7 +1571,7 @@ raster_base_header(cups_page_header_t *h,  // O - Raster header
+     {
+       if (*(val + 3) == '_' || *(val + 3) == '-')
+ 	ptr = val + 4;
+-      colorspace = 1;
++      colorspace = pwg_raster ? 19 : 1;
+       numcolors = 3;
+     }
+     else if (!strcasecmp(val, "auto"))
+