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Ref D15330.
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Although the documentation says so, the null-terminator was missing.
This could cause crashes when logging shader linking errors as shader
sources are empty in this case.
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Those were caused by various tools used on degenerate geometry, see
T79775.
Note that fixes are as low-level as possible, to ensure they cover as
much as possible of unreported issues too.
We still probably have many more of those hidden in BLI_math though.
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Mistake in a5bbdd6998ab
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Problem introduced in {rB1f223b9a}.
This was possibly causing random crashes in Blender file browser when
compiled with ASAN.
Microsoft documents indicate that any call to `CoInitializeEx` must be
balanced by a corresponding call to `CoUninitialize`.
https://docs.microsoft.com/en-us/windows/win32/api/combaseapi/nf-combaseapi-coinitializeex#remarks
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There was a quadratic algorithm extracting triangles from a coplanar
cluster. This is now linear.
Also found and fixed a bug in the same area related to the triangulator
added recently: it didn't get the right correspondence between new
edges and original edges.
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The triangulator I made (using CDT) doesn't work if the face
self-intersects. Fall back to the polyfill triangulator when
that happens.
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Useful to simplify versioning code when identifiers need updating
in multiple places.
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The fast triangulator from Blenlib could leave a non-manifold mesh
after removing degenerate triangles. Switched to an exact triangulator.
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This removes a lot of unnecessary code that is generated by
the compiler automatically.
In very few cases, a defaulted destructor in a .cc file is
still necessary, because of forward declarations in the header.
I removed some defaulted virtual destructors, because they are not
necessary, when the parent class has a virtual destructor already.
Defaulted constructors are only necessary when there is another
constructor, but the class should still be default constructible.
Differential Revision: https://developer.blender.org/D10911
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x and y were inverted.
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This fixes T86440
As the CU_2D flag is set for nurbs, a Curve can have 2D nurbs mixed with 3D.
But the UI does not allow this mixing. It updates all nurbs to 2D or 3D when set.
So remove this specific flag for nurbs.
This may break old files, since 2D curves with mixed 3D are now set as 3D.
Differential Revision: https://developer.blender.org/D10738
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Expose a this function to initialize any zeroed axes
to an orthogonal vector based on other non-zeroed axes.
This functionality already existed for `invert_m#_m#_safe_ortho`,
expose as a public function as it's useful to be able to fill in zeroed
axes of transformation matrices since they may be used in matrix
multiplication which would create degenerate matrices.
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This is an implementation of Enhanced Subpixel Morphological Antialiasing (SMAA)
The algorithm was proposed by:
Jorge Jimenez, Jose I. Echevarria, Tiago Sousa, Diego Gutierrez
This node provides only SMAA 1x mode, so the operation will be done with no spatial
multisampling nor temporal supersampling. See Patch for comparisons.
The existing AA operation seems to be used only for binary images by some other nodes.
Using SMAA for binary images needs no important parameter such as "threshold", so we
perhaps can switch the operation to SMAA, though that changes existing behavior.
Notes:
1. The program code assumes the screen coordinates are DirectX style that the
vertical direction is upside-down, so "top" and "bottom" actually represent bottom
and top, respectively.
Thanks for Habib Gahbiche (zazizizou) to polish and finalize this patch.
Reviewed By: jbakker
Differential Revision: https://developer.blender.org/D2411
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Differential Revision: https://developer.blender.org/D10802
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This was included for `FILE *` which isn't used in the header.
Ref D10799
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This adds a `BLI_assert_unreachable()` macro, that should be used instead
of `BLI_assert(false)` in many places.
* `BLI_assert_unreachable` provides more information than `BLI_assert(false)`
to people reading the code.
* `BLI_assert_unreachable` will print an error to `stderr` in a release build.
This makes it more likely that we will get bug reports when the assumptions
of a developer were wrong.
Differential Revision: https://developer.blender.org/D10780
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Also expand doc-string for `BLI_str_escape_find_quote`
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This adds the LineArt grease pencil modifier.
It takes objects or collections as input and generates various grease
pencil lines from these objects with the help of the active scene
camera. For example it can generate contour lines, intersection lines
and crease lines to name a few.
This is really useful as artists can then use 3D meshes to automatically
generate grease pencil lines for characters, enviroments or other
visualization purposes.
These lines can then be baked and edited as regular grease pencil lines.
Reviewed By: Sebastian Parborg, Antonio Vazquez, Matias Mendiola
Differential Revision: http://developer.blender.org/D8758
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The code has to keep track of "zero volume" cells and I forgot
that there were cases where that needed be be invalidated.
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No functional changes.
This function replaces some of the logic in
`DRW_select_buffer_find_nearest_to_point` that traverses a buffer in a
spiral way to search for a closer pixel (not the closest).
Differential Revision: https://developer.blender.org/D10548
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This commit refactors the point distribute node to skip realizing
the instances created by the point instance node or the collection
and object info nodes. Realizing instances is not necessary here
because it copies all the mesh data and and interpolates all
attributes from the instances when this operation does not
need to modify the input geometry at all.
In the tree leaves test file this patch improves the performance of
the node by about 14%. That's not very much, the gain is likely larger
for more complicated input instances with more attributes (especially
attributes on different domains, where interpolation would be necessary
to join all of the instances). Another possible performance improvement
would be to parallelize the code in this node where possible.
The point distribution code unfortunately gets quite a bit more
complicated because it has to handle the complexity of having many
inputs instead of just one.
Note that this commit changes the randomness of the distribution
in some cases, as if the seed input had changed.
Differential Revision: https://developer.blender.org/D10596
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The commit rB6f63417b500d that made exact boolean work on meshes
with holes (like Suzanne) unfortunately dramatically slowed things
down on other non-manifold meshes that don't have holes and didn't
need the per-triangle insideness test.
This adds a hole_tolerant parameter, false by default, that the user
can enable to get good results on non-manifold meshes with holes.
Using false for this parameter speeds up the time from 90 seconds
to 10 seconds on an example with 1.2M triangles.
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The Exact boolean used in the cell fracture addon incorrectly
kept some outside faces: due to some raycasts going into open
eye socket then out of the head, leading to one ray direction
(out of 8) saying the face was inside the head. The current
code allowed 1 of 8 rays only as "inside" to accommodate the
case of a plane used in boolean to bisect. But this cell fracture
case needs more confidence of being inside. So changed the
test for intersection to require at least 3 of 8 rays to be inside.
Maybe the number of rays to indicate insideness should be exposed
as an option, to allow user tuning according to the degree of
"non-volumeness" of the arguments, but will try at least for now
to magically guess the right value of the rays-inside threshold.
Note: all of this only for the case where the arguments are not
all PWN (approx: manifold). The all-PWN case doesn't use raycast.
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This is a simple heuristic that seems to improve the search results in many cases.
Differential Revision: https://developer.blender.org/D10618
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Triangulating ngons could fail with the method that was being
used: projecting along the dominant normal axis and then using CDT.
It could fail if the ngon has self crossings or might be so after
the described projection.
Switched to using projection along the normal itself, and also to
using polyfill which produces some kind of triangulation no matter
what in such circumstances. This will also likely be faster if
there are a lot of ngons in the meshes, since the exact arithmetic
CDT was being used before, and now float arithmetic is used.
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This was caused by the window_translate_m4 not offsetting the winmat in the
right direction for perspective view. Thus leading to incorrect weights.
The workbench sample weight computation was also inverted.
This fix will change the sampling pattern for EEVEE too (it will just
mirror it in perspective view).
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The Exact modifier code had been written to avoid using BMesh but
in the initial release the modifier still converted all Meshes to
BMeshes, and then after running the boolean code on the BMeshes,
converted the result back to a Mesh.
This change skips that. Most of the work here is in getting the
Custom Data layers right. The approach taken is to merge default
layers from all operand meshes into the final result, and then
use the original verts, edges, polys, and loops to copy or interpolate
the appropriate custom data layers from all operands into the result.
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In preparation of adding Neon support.
Ref D8237, T78710
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