Bad colors when writing a pix in OSX

[60-hz]

Colors channels looks wrong when writing a file to disk using [pix_write], [pix_writer] and [pix_buffer] objets in OSX.

Source pict:

Result of pix_write:

OSX 10.13.6
pd-0.50.2
GEM: ver: 0.94.git v0.94
GEM: compiled on Feb 12 2019

Tried in ubuntu and colors are ok.

[unknownError]

can confirm the issue here. same happens on OSX 10.15.2, gem installed through deken on pd vanilla 0.50-2

[umlaeute]

hrmpf. i'm pretty sure i had fixed this...

[umlaeute]

could you please check the actual format of your images? (JPEG, TIFF, SGI,...)
also it would be helpful to get a minimal example that triggers the problem.

(there are multiple different image backends involved)

[60-hz]

I tried [pix_write] with the master build from d2b7279 under MacOS and (most reliable) [gemglfw3window] window manager.
Here is an exemple with a file output with each backends.
It looks like that TIFF is upside down and all backends have color issues.

pix_write_MacOS_test.zip

[umlaeute]

which writer backends are you using?

here it says on startup:

GEM: image saving plugins: STB magick

(so i have two image saving backends)

and, if I start Pd with -verbose -verbose (twice! so you really have to add the flags manually) and set the log-level to "4 all" it says (when saving an image) something like:

trying saver[1]=magick / 101.500000

indicating that it is using the magick backend for saving images.

EDIT here being on Linux using Gem-0.94...

[60-hz]

Strange, "-verbose" flag don't work on my pd 0.53-1

/Applications/Pd-0.53-1.app/Contents/MacOS/Pd -verbose unknown option: -verbose while executing "opt_parser::get_options $argv" (procedure "parse_args" line 7) invoked from within "parse_args $argc $argv" (procedure "main" line 10) invoked from within "main $::argc $::argv" (file "/Applications/Pd-0.53-1.app/Contents/Resources/Scripts/pd-gui.tcl" line 870) invoked from within "source [file join [file dirname [info script]] pd-gui.tcl]"

I found that it works only with Pd 0.53.2...
After few quarantine issues under MacOS ( :/ ) I can finally launch pd with -verbose -verbose... but then Gem lib failed to load!

So all I have right now is:
GEM: image saving plugins: SGI STB imageIO jpeg tiff

[umlaeute]

How do you add the -verbose flags? They have to be passed to the pd-core, and you seem to be passing them to the pd-gui.
Either:

• add them to the "flags" in the startup preferences (iirc, currently afk)
• launch Pd from the cmdline with /Applications/Pd-0.53-1.app/Contents/Resources/bin/pd -verbose -verbose

[60-hz]

launch Pd from the cmdline with /Applications/Pd-0.53-1.app/Contents/Resources/bin/pd -verbose -verbose

That's the way I always do yes...

add them to the "flags" in the startup preferences (iirc, currently afk)

Oh, I forgot this way thanks... so here is the print:

trying to add 'SGI' as backend
added backend#0 'SGI' @ 0x600002317088
trying to add 'STB' as backend
added backend#1 'STB' @ 0x6000023160a8
trying to add 'imageIO' as backend
added backend#2 'imageIO' @ 0x600002316138
trying to add 'jpeg' as backend
added backend#3 'jpeg' @ 0x600002316898
trying to add 'tiff' as backend
added backend#4 'tiff' @ 0x600002316128

When I save with TIFF:
trying saver[4]=tiff / 100.000000

And when I save with JPEG:
trying saver[3]=jpeg / 101.000000

[umlaeute]

it seems that the TIFF and JPEG backends behave worst, STB and imageIO are better (and can handle more formats).

you could just remove the gem_imageTIFF.so and gem_imageJPEG.so files to not use them.

in any case, i've rebooted this issue as #346 (there are other issues as well, even on Linux!)

[60-hz]

you could just remove the gem_imageTIFF.so and gem_imageJPEG.so files to not use them.

indeed! So simple fix...
Maybe it's better not to include those backends in MacOS for the moment, or it would be nice to be able to choose backends from the patch?