Hello Everyone,
i've got two little questions:
I'm developping a c++-tool to convert OpenExr-images from Maya to
OpenExr-images which are optimized for Nuke (the tool creates a data
window and converts the images into scanline-mode with piz compression).
Question 1: Why is the creation of a Image with piz-compression so slow
comparing to the zip-compression? (The input-File is a tiled EXR with
RLE-Compression). Is there a way to optimize the conversion from RLE to
PIZ? The conversion is really slow (several minutes for a 2k exr with 10
layers) so multithreading wouldn't fix the problem.
Question 2: I want to use Multithreading for writing an exr. Reading the
documentation i thought i just have to set the GlobalThreadCount and
then start the writePixels-function for every 20 scanlines (for example)
again and again and the interface would do the thread-stuff
automatically. But i don't see any effect. The writing takes exactly the
same time. What is the right way to do that?
Thanks for your replies.
David
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