| commit | 59adfc0979aaf940e47a28ff7a196881fc019668 | |
| author | Oxicid <oxicid@noreply.localhost> | |
| Thu, 13 Apr 2023 03:51:43 +0000 (13 05:51 +0200) | ||
| committer | Campbell Barton <ideasman42@gmail.com> | |
| Thu, 13 Apr 2023 10:25:42 +0000 (13 20:25 +1000) | ||
| tree | 4f0b01936a94e924fc4d0d8aeffa8148350be2a0 | treesnapshot (tar.gz zip) |
| parent | 23e0ab6d20b9946df29752f36e4803d5969f196c | commitdiff |
io_mesh_uv_layout: speed up png export with OIIO (x7)
Since png eventually stores data in int8 type, when using bpy to save an
image, you actually have to convert the types twice, first to float and
then back to int8.
Using library OIIO allows you to avoid such conversions, as directly
with int8, thereby speed of the whole operation increases in 7 times.
Also, OIIO is more correct in premultiplied alpha, now the texture is
not darkened.
Ref !104545 with minor updates by @ideasman42.
Since png eventually stores data in int8 type, when using bpy to save an
image, you actually have to convert the types twice, first to float and
then back to int8.
Using library OIIO allows you to avoid such conversions, as directly
with int8, thereby speed of the whole operation increases in 7 times.
Also, OIIO is more correct in premultiplied alpha, now the texture is
not darkened.
Ref !104545 with minor updates by @ideasman42.
| io_mesh_uv_layout/__init__.py | diffblobblamehistory | |
| io_mesh_uv_layout/export_uv_png.py | diffblobblamehistory |