[Bug 47018] Black transparent images

[wine-bugs at winehq.org]

https://bugs.winehq.org/show_bug.cgi?id=47018

Anastasius Focht <focht at gmx.net> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |focht at gmx.net

--- Comment #5 from Anastasius Focht <focht at gmx.net> ---
Hello folks,

although the software to demonstrate this (.NET Frameworks bundle/repacks) is
kinda questionable, it's still a valid problem.

I've checked one of the images from installer temp folder and it seems it's
BMPv3 32-bit RGBA BMP.

--- snip ---
$ identify -verbose example.bmp 
Image: example.bmp
  Format: BMP3 (Microsoft Windows bitmap image (V3))
  Class: DirectClass
  Geometry: 180x180+0+0
  Resolution: 37.8x37.8
  Print size: 4.7619x4.7619
  Units: PixelsPerCentimeter
  Colorspace: sRGB
  Type: TrueColorAlpha
  Base type: Undefined
  Endianess: Undefined
  Depth: 8-bit
  Channel depth:
    red: 8-bit
    green: 8-bit
    blue: 8-bit
    alpha: 8-bit
  Channel statistics:
    Pixels: 32400
    Red:
      min: 0  (0)
      max: 255 (1)
      mean: 18.9594 (0.0743508)
      standard deviation: 47.832 (0.187577)
      kurtosis: 7.71067
      skewness: 2.89721
      entropy: 0.359215
    Green:
      min: 0  (0)
      max: 255 (1)
      mean: 41.5781 (0.163052)
      standard deviation: 77.3974 (0.303519)
      kurtosis: 1.11741
      skewness: 1.62853
      entropy: 0.401715
    Blue:
      min: 0  (0)
      max: 255 (1)
      mean: 52.461 (0.205729)
      standard deviation: 94.0989 (0.369015)
      kurtosis: 0.098198
      skewness: 1.3995
      entropy: 0.375133
    Alpha:
      min: 0  (0)
      max: 255 (1)
      mean: 70.5453 (0.276648)
      standard deviation: 109.348 (0.428814)
      kurtosis: -0.92384
      skewness: 0.999178
      entropy: 0.272297
  Image statistics:
    Overall:
      min: 0  (0)
      max: 255 (1)
      mean: 45.886 (0.179945)
      standard deviation: 82.169 (0.322231)
      kurtosis: 0.93147
      skewness: 1.62979
      entropy: 0.35209
  Alpha: none   #00000000
  Rendering intent: Perceptual
  Gamma: 0.454545
  Chromaticity:
    red primary: (0.64,0.33)
    green primary: (0.3,0.6)
    blue primary: (0.15,0.06)
    white point: (0.3127,0.329)
  Background color: white
  Border color: srgba(223,223,223,1)
  Matte color: grey74
  Transparent color: none
  Interlace: None
  Intensity: Undefined
  Compose: Over
  Page geometry: 180x180+0+0
  Dispose: Undefined
  Iterations: 0
  Compression: None
  Orientation: Undefined
  Properties:
    date:create: 2019-04-15T11:04:41+02:00
    date:modify: 2013-10-19T18:34:08+02:00
    signature: e9d311d9d6038ff592c738b526280d10a874ef3531c8caf3e35643ff983b8898
  Artifacts:
    filename: example.bmp
    verbose: true
  Tainted: False
  Filesize: 129654B
  Number pixels: 32400
  Pixels per second: 3240000B
  User time: 0.000u
  Elapsed time: 0:01.009
  Version: ImageMagick 6.9.9-38 Q16 x86_64 2018-03-12
http://www.imagemagick.org
--- snip ---

--- snip ---
$ xxd example.bmp | head -4
00000000: 424d 76fa 0100 0000 0000 3600 0000 2800  BMv.......6...(.
00000010: 0000 b400 0000 b400 0000 0100 2000 0000  ............ ...
00000020: 0000 0000 0000 c40e 0000 c40e 0000 0000  ................
00000030: 0000 0000 0000 0000 0000 0000 0000 0000  ................
--- snip ---

Anyway, I can't be arsed all the time to duplicate bugs into useful ones.

Regards

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