[mapserver-commits] [MapServer/MapServer] 1051da: Raster rendering: skip Byte alpha band with PROCES...

[Even Rouault]

  Branch: refs/heads/main
  Home:   https://github.com/MapServer/MapServer
  Commit: 1051da4f183b7697d8b468b0b60143188f3afe54
      https://github.com/MapServer/MapServer/commit/1051da4f183b7697d8b468b0b60143188f3afe54
  Author: Even Rouault <even.rouault at spatialys.com>
  Date:   2024-05-31 (Fri, 31 May 2024)

  Changed paths:
    A msautotest/gdal/data/rgba_alpha_all_255.tif
    A msautotest/gdal/expected/processing_scale_auto_alpha_255.png
    A msautotest/gdal/processing_scale_auto_alpha_255.map
    M src/mapdrawgdal.c

  Log Message:
  -----------
  Raster rendering: skip Byte alpha band with PROCESSING "SCALE=AUTO"

Currently when using PROCESSING "SCALE=AUTO" on a raster with an alpha
band, the alpha band is all scaled, which is undesirable, in particular
if it is fully opaque, as the result of auto scaling on it is to
generate a fully transparent result.


  Commit: e06dda5820296bea67aba364bbfca190a7ce0bfd
      https://github.com/MapServer/MapServer/commit/e06dda5820296bea67aba364bbfca190a7ce0bfd
  Author: Even Rouault <even.rouault at spatialys.com>
  Date:   2024-06-11 (Tue, 11 Jun 2024)

  Changed paths:
    A msautotest/gdal/data/rgba_alpha_all_255.tif
    A msautotest/gdal/expected/processing_scale_auto_alpha_255.png
    A msautotest/gdal/processing_scale_auto_alpha_255.map
    M src/mapdrawgdal.c

  Log Message:
  -----------
  Merge pull request #7067 from rouault/scale_auto_rgba

Raster rendering: skip Byte alpha band with PROCESSING "SCALE=AUTO"


Compare: https://github.com/MapServer/MapServer/compare/7fee5995a1f9...e06dda582029

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