OFFSITE does not work with PROCESSING "RESAMPLE"

[flavio]

Setting an OFFSITE to make a color transparent does not work when PROCESSING "RESAMPLE" is set or when an image is rotated (i.e. referenced by a tfw with rotation params) . The specified OFFSITE always turns out black, no matter what output format is specified (I tried any AGG output, 8bit, RBG and RGBA). Any image can be used to test (i.e. 8bit, 24bit).'

[flavio]

You should be able to test with any image containing a lot of white ... it should turn black ...

Sample Map-File section:

LAYER

NAME "ÜP" TYPE RASTER STATUS ON OFFSITE 255 255 255 DATA "raster/ZP_1980/Zonenplan1980_West.tif" PROCESSING "RESAMPLE=AVERAGE" PROJECTION

"init=epsg:21781"

END

END

Output formats tested:

OUTPUTFORMAT

NAME 'AGG_PNG' DRIVER AGG/PNG IMAGEMODE RGB FORMATOPTION "QUANTIZE_FORCE=ON" FORMATOPTION "QUANTIZE_DITHER=OFF" FORMATOPTION "QUANTIZE_COLORS=256"

END

OUTPUTFORMAT

NAME 'AGG_PNG_24' DRIVER AGG/PNG IMAGEMODE RGBA FORMATOPTION "INTERLACE=OFF" TRANSPARENT ON

END

OUTPUTFORMAT

NAME 'AGG_JPEG' DRIVER AGG/JPEG IMAGEMODE RGB FORMATOPTION "QUALITY=100"

END

[tbonfort]

what version are you using?

this was supposed to be fixed in #2540

[flavio]

5.2.0

[flavio]

Thomas, be aware that OFFSITE along with AGG works if there is no resampling or rotation.

[tbonfort]

Flavio, do please recheck your mapserver version

I cannot reproduce with 5.2

[flavio]

Thomas, Frank ... apologize. On the server I tested it was indeed 5.1dev and not 5.2. in 5.2 it works. Sorry again for the hassle. Case closed.