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Caused by rB8252cc7044ea (fix for T65215), we actually need a default
material in edges-only case too, not to exclude None (default) one in
that case...
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fails on re-import if object has adges but no faces.
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Addresses new behavior of object.to_mesh().
This is corresponding part for D4875.
Reviewers: brecht
Reviewed By: brecht
Differential Revision: https://developer.blender.org/D4876
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Mainly search-and-replace approach.
Tested the enabled-by-default export/import addons. Seems to work with
an exception of X3D which is still referencing Blender Internal material
properties.
Reviewers: brecht
Reviewed By: brecht
Differential Revision: https://developer.blender.org/D4866
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Much better than using Principled's Transmission setting as we did
before...
Part of T64609.
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We need a way for add-ons to generate a temp render depsgraph and
evaluate it, for this to work again, with new Blender 2.8 design.
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Not really important here (we expect to set a value for all items), but
avoids useless computation anyway.
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Thanks to @BzztPloink for the headup.
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We cannot clear a face's vnors/uvs indices in case none are defined in
the OBJ file, we need indices for all loops when defining them in
Blender's mesh...
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instances.
Looks like that was skipped somehow when OBJ IO was ported to 2.8...
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As discussed in D4303.
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Regression/side effect from rBA9448cef00d1b3, while we do want to get
one Blender object per 'o' line (object declaration) in OBJ file, we do
want to 'reuse' same objects when same OBJ groups ('g' lines) are used
inside of a same object, in case we split OBJ groups into objects...
Thanks to Jacques Lucke (@JacquesLucke) for initial investigation.
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Bloody stupid mistake in 'speed-up parsing' work, yet annoyingly
difficult to spot on... :(
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scale/offset was specified.
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named the same.
Ensure we use a different key for each OBJ object (usung similar naming
increment as Blender one).
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Typo, thanks to Aleksi Juvani (@aleksijuvani) for finding it.
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retrival of metallic (ab)uses OBJ material ambient term.
this can be non-zero, but in case of no reflections (OBJ 'illum' < 3)
metallic should be zero.
Fixes T60150
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Issue noticed by Philipp Oeser (@lichtwerk), thanks!
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Original report: OBJ file import fails for objects with vertex groups defined when polygroups option is selected
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This follows naming convention agreed on in T56648.
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Not sure how we did this in old code, but we certainly cannot ignore
None (a.k.a. default place holder) material anymore... Do not generate
it when not needed, though!
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This commit essentially replaces several face data setting done into a
regular loop by calls to magic 'foreach_set'.
This increases seed of affected code by over 200%, global mesh building
by over 40%, and overall typical OBJ import by 20%.
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This commits mainly add a specific, optimized handling for vertex data
(coos, nors, UVs) expressed on single lines. Nearly all OBJ files I've
come accross use a single line per vertex data.
This code cand be up to 40% quicker on vertex data parsing, making
typical parsing about 8% quicker, and typical import about 5% quicker.
Note that I tried applying same kind of optimizations on faces parsing,
but we need to perform rather more complex checks there, so could not
get any interesting improvements.
Also, fixing some logical flaw in invalid nor/uvtex indices, which also
gives marginal speed improvements.
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Does not give any measurable benefit though.
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Guess that was added when layercollection of view layer could still be
edited, that is no more the case (reading code), now view layers appear
to always only have the scene's master collection, all others being
children of that one.
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Differential Revision: https://developer.blender.org/D3746
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Conversion from phong exponent to Principled BSDF is expected to be
quadratic afaik, not linear.
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This ports the already working addons. The disabled x3d, psk, lwo, 3ds,
raw, dxf addons still need to be converted.
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Conflicts:
io_scene_obj/__init__.py
io_scene_obj/import_obj.py
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Dummy typo, investigation done by @JimG, thanks!
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Based on new bpy_extras' node_shader_utils module.
Note that this is still quiet rough on the edges, not all features
previously supported (in 2.7x) are back yet (at least missing
displacement, which should not be too hard to add, and real alpha
handling, which is probably a bit more hairy).
Also, some things like specular or mirror colors, ambient lighting, etc.
do not exists in Principled BSDF shader, tried to work around it but
there likely some room for improvements here too.
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We are always using nodes now, whether we want it or not...
Also fixed various access to removed 'fixed shader' old 2.7x materials
in import, and some other minor bugs.
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As with FBX, major changes are no support for exporting materials
anymore (since all are nodals), and no more texface at all.
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