Alpha image appear black in pdf

[Hildo Guillardi Júnior]

When exported to PDF an Eeschema project with some transparent blackground image, it is shown completely black on PDF (the `alpha`is not interpreted).

Application: kicad
Version: 5.1.0-unknown-03bce55~82~ubuntu16.04.1, release build
Libraries:
    wxWidgets 3.0.2
    libcurl/7.47.0 OpenSSL/1.0.2g zlib/1.2.8 libidn/1.32 librtmp/2.3
Platform: Linux 4.15.0-47-generic x86_64, 64 bit, Little endian, wxGTK
Build Info:
    wxWidgets: 3.0.2 (wchar_t,wx containers,compatible with 2.8) GTK+ 2.24
    Boost: 1.58.0
    OpenCASCADE Community Edition: 6.8.0
    Curl: 7.47.0
    Compiler: GCC 5.4.0 with C++ ABI 1009

Build settings:
    USE_WX_GRAPHICS_CONTEXT=OFF
    USE_WX_OVERLAY=OFF
    KICAD_SCRIPTING=ON
    KICAD_SCRIPTING_MODULES=ON
    KICAD_SCRIPTING_PYTHON3=OFF
    KICAD_SCRIPTING_WXPYTHON=ON
    KICAD_SCRIPTING_WXPYTHON_PHOENIX=OFF
    KICAD_SCRIPTING_ACTION_MENU=ON
    BUILD_GITHUB_PLUGIN=ON
    KICAD_USE_OCE=ON
    KICAD_USE_OCC=OFF
    KICAD_SPICE=ON

[Michael Kavanagh (michaelkavanagh)]

Maybe related to https://bugs.launchpad.net/kicad/+bug/1809845 and https://bugs.launchpad.net/kicad/+bug/1814893

[Wayne Stambaugh (stambaughw)]

@Hildo, if possible please post the schematic file that demonstrates this issue or create a minimal sample schematic if you cannot share the original schematic.

[Hildo Guillardi Júnior (hildogjr)]

Attached file example, see:
1) Inserted image on the template have alpha and are correct in Eeschema (lp:1809845);
2) Generated PDF at 'output' folder have the above mentioned images black.

[Michael Kavanagh (michaelkavanagh)]

I can replicate this.

Application: kicad
Version: (5.1.2-1)-1, release build
Libraries:
    wxWidgets 3.0.4
    libcurl/7.54.0 LibreSSL/2.6.5 zlib/1.2.11 nghttp2/1.24.1
Platform: Mac OS X (Darwin 18.5.0 x86_64), 64 bit, Little endian, wxMac
Build Info:
    wxWidgets: 3.0.4 (UTF-8,STL containers,compatible with 2.8)
    Boost: 1.69.0
    OpenCASCADE Community Edition: 6.9.1
    Curl: 7.54.0
    Compiler: Clang 9.0.0 with C++ ABI 1002

Build settings:
    USE_WX_GRAPHICS_CONTEXT=ON
    USE_WX_OVERLAY=ON
    KICAD_SCRIPTING=ON
    KICAD_SCRIPTING_MODULES=ON
    KICAD_SCRIPTING_PYTHON3=OFF
    KICAD_SCRIPTING_WXPYTHON=ON
    KICAD_SCRIPTING_WXPYTHON_PHOENIX=OFF
    KICAD_SCRIPTING_ACTION_MENU=ON
    BUILD_GITHUB_PLUGIN=ON
    KICAD_USE_OCE=ON
    KICAD_USE_OCC=OFF
    KICAD_SPICE=ON

[Hildo Guillardi Júnior (hildogjr)]

This also need to be fix at Pcbnew plot PDF.

[Jon Evans (craftyjon)]

Fixed in revision 0a6b1ea256e2756da4170a32f2914f78e8d7e45e
https://git.launchpad.net/kicad/commit/?id=0a6b1ea256e2756da4170a32f2914f78e8d7e45e