I've found a special bug with ImageWriter using plugin x-png from "ImageIO-
tools and plugins" v.1.1 : indeed everything works ok on OS X and XP I equiped
with Radeon Graphics card but I've got a "Sempron from AMD" with a mainboard
using original integrated chipset w/ graphics using shared memory from "S3
Graphics", where the latter config does caught an expected dead-lock. I
expected the dead-lock on synchronization-process where I checked the image
data for its file size. It shows "file size is 0 bytes" after calling
ImageWriter's to cache the data on disk. Thereby checking for caching issue, I
modified ImageIO.setCacheDirectory(File) to a neighbour directory name and it
shows no file when running the application. Though ImageReader is OK because I
can display pictures that requires once to be loaded, ImageWriter fails to
write image data with no exception thrown, like the image weren't loaded, which
is wrong for those obvious reasons.
Is that issue corrected in 1.2 release ? I'll look again to PNG plugins and
ImageWriter source code and see for some more informations.