Hi,
we use recently started to use PNG files for texturing for Unity games
and want to use the same texturing for Arnold and Unity. for effective
texturing we use alpha channels with PNG files and had to discover that
the maketx creates an color channel premultiplied with the alpha. This
results in darker textures for our Arnold renderings compared to the
ones we see in Unity or Maya OpenGL viewport. This behaviour only occurs
with PNG files, not with tif or exr.
So my question is: What is the reason that the color channel is
premultiplied for tx files?
haggi
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