#
# Tests layering a layer with transparency on a layer with 256 colors already.
# This is intended to address case where colors are exausted before a 
# transparent color can be allocated.
#
# NOTE: with resampling.
#
# ISSUE: The resulting image has the grid drawn in a grey color instead of
#        the natural red.  This is because the colormap is full by the time
#        we get to allocating a color for the grid.  This is an expected
#        "error" in the results.
#
# UPDATE: Now mapdrawgdal.c constructs a colortable for greyscale images
#         with only 128 entries instead of 256 so the "overload" no longer
#         happens.  Preserve test with new results for posterity.
#
# REQUIRES: SUPPORTS=PROJ
#
#
MAP

NAME TEST
STATUS ON
SIZE 400 300
EXTENT 0.5 0.5 399.5 299.5
IMAGECOLOR 255 255 0

PROJECTION
  "proj=utm"
  "zone=12"
  "datum=WGS84"
END

IMAGETYPE png8_t

OUTPUTFORMAT
  NAME png8_t
  DRIVER "GD/PNG"
  IMAGEMODE PC256
  TRANSPARENT OFF
END

LAYER
  NAME grey
  TYPE raster
  STATUS default
  DATA data/grey.tif
  PROJECTION
    "proj=utm"
    "zone=12"
    "ellps=WGS84"
    "towgs84=1,0,0"
  END
END

LAYER
  NAME grid1
  TYPE raster
  STATUS default
  DATA data/grid.gif
  PROJECTION
    "proj=utm"
    "zone=12"
    "ellps=WGS84"
    "towgs84=1,0,0"
  END
END

END # of map file