Cycles now uses the color space on the image datablock, and uses OpenColorIO
to convert to scene linear as needed. Byte images do not take extra memory,
they are compressed in scene linear + sRGB transfer function which in common
cases is a no-op.
Eevee and workbench were changed to work similar. Float images are stored as
scene linear. Byte images are compressed as scene linear + sRGB and stored in
a GL_SRGB8_ALPHA8 texture. From the GLSL shader side this means they are read
as scene linear, simplifying the code and taking advantage of hardware support.
Further, OpenGL image textures are now all stored with premultiplied alpha.
Eevee texture sampling looks a little different now because interpolation
happens premultiplied and in scene linear space.
Overlays and grease pencil work in sRGB space so those now have an extra
conversion to sRGB after reading from image textures. This is not particularly
elegant but as long as engines use different conventions, one or the other
needs to do conversion.
This change breaks compatibility for cases where multiple image texture nodes
were using the same image with different color space node settings. However it
gives more predictable behavior for baking and texture painting if save, load
and image editing operations have a single color space to handle.
Differential Revision: https://developer.blender.org/D4807
This makes degenerate triangles be ignored, as they cause artifacts and
don't contribute to the result anyway. There is an extra cost for
all triangles, to check if they are degenerate. Though not ideal, this
seems to be the safest solution at the moment (see code comments).
This commit also changes the clamp value for the bleed len_fact from 5
to 10, to give good corner results with some sharper angles, considering
they will be rounded later.
A lot of the texture paint initialization code could be optimized
by caching the results throughout the session, instead of rerunning it
for each stroke. Stroke initialization is way too expensive at the
moment, and does many redundant computations.
Use the term "AFTER" instead of "OFS" since it wasn't obvious these
macros operate on everything after the struct member passed.
Avoid casting to non-const types when only reading.
Convention was not to but after discussion on 918941483f we agree its
best to change the convention.
Names now mostly follow RNA.
Some exceptions:
- Use 'nodetrees' instead of 'nodegroups'
since the struct is called NodeTree.
- Use 'gpencils' instead of 'grease_pencil'
since 'gpencil' is a common abbreviation in the C code.
Other exceptions:
- Leave 'wm' as it's a list of one.
- Leave 'ipo' as is for versioning.
We already have different storages for cddata of verts, edges etc.,
'simply' do the same for the mask flags we use all around Blender code
to request some data, or limit some operation to some layers, etc.
Reason we need this is that some cddata types (like Normals) are
actually shared between verts/polys/loops, and we don’t want to generate
clnors everytime we request vnors!
As a side note, this also does final fix to T59338, which was the
trigger for this patch (need to request computed loop normals for
another mesh than evaluated one).
Reviewers: brecht, campbellbarton, sergey
Differential Revision: https://developer.blender.org/D4407
This fixes the issue of long spikes on sharp corners by rounding them,
guaranteeing that the bleed will never exceed the bleed distance
set by the user in any part of the mesh.
See: D4437
Two aspects are addressed:
- Correct computation of dilation distance,
so that dilated boundaries remain parallel to the original boundaries
(and with the actual distance specified as bleed distance).
- Dilate with regard to adjacent seams
instead of adjacent triangle edges, for a more correct result.
This is especially important in the case of concave shapes,
where spikes could overlap with actual geometry.
See: D4436
Now always refresh when the material changes. Depsgraph tag moved out
of the refresh function since that gets called on depsgraph update,
which should not trigger a second depsgraph update.
This complicated handling of undo steps in a generic way
especially switching between undo systems that stored data to ones
that accumulated changes.
Now each undo system must treat it's steps as check-point,
internally it can apply/rewind changes.
This commit also fixes projection paint where the object mode wasn't
following the undo steps.
BF-admins agree to remove header information that isn't useful,
to reduce noise.
- BEGIN/END license blocks
Developers should add non license comments as separate comment blocks.
No need for separator text.
- Contributors
This is often invalid, outdated or misleading
especially when splitting files.
It's more useful to git-blame to find out who has developed the code.
See P901 for script to perform these edits.
Operator relys on 3DView and was failing from Topbar and Properties
Editor. Now tries to find the biggest 3DView and uses that.
Reviewers: brecht
Maniphest Tasks: T60133
Differential Revision: https://developer.blender.org/D4215
Texture paint code was retrieving the evaluated mesh from the
original object, which isn't supposed to happen, so the cached
mesh isn't properly cleaned up by Edit Mode toggle.
For most brushes, texture painting uses a special mask accumulation
table in order to ensure that the amount of added color only increases
when the same pixel is touched multiple times by the stroke.
Unfortunately, only the mask texture was added to the mask before
this check, while normal, stencil, texture alpha masks were applied
after this check. This means that the check can pass if e.g. the
pressure is increased, but the final mask value is actually lower.
One might think that the mask values are fixed per pixel, but with
symmetry that isn't true. The result is a nasty stripe artifact due
to the discrete cutoff nature of the accumulation test.
In order to fix this, apply all masks before accumulation.
If backface culling is off, the user obviously wants to paint on
back faces, so the normal angle cutoff designed to prevent painting
at glancing angles shouldn't do the culling as a side effect.
