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Campbell Barton 19dbe049db Fix #106469: unstable tessellation with quad-flipping detection 
The result of detecting if a quad should flip the default 0-2 split
when tessellated only used a pre-calculated normal when available,
since the method of detecting the flip was different, the check for a
concave face could change depending on the existence of polygon-normals.

In practice this meant cycles render preview could use a different
tessellation than the GPU display.

While [0] exposed the bug, it's an inherent problem with having 2
methods of detecting concave quads.

Remove is_quad_flip_v3_first_third_fast_with_normal(..) and always
use is_quad_flip_v3_first_third_fast(..), because having to calculate
the normal inline has significant overhead.

Note that "bow-tie" quads may now render with a subdivision in a
different direction although they must be very distorted with both
triangles along the 0-2 split pointing away from each other.

Thanks to @HooglyBoogly for investigating the issue.

[0]: 16fbadde36.
2023-04-21 15:02:47 +10:00
..
array_store_utils.c
Fix error freeing NULL if BArrayStore_AtSize is empty
2023-03-11 11:57:08 +11:00
array_store.c
Cleanup: duplicate words in comments
2023-03-29 14:17:32 +11:00
array_utils.c
Cleanup: Use switch and BLI_assert_unreachable() more.
2022-05-17 16:06:54 +02:00
array_utils.cc
Mesh: Parallelize extraction of UV maps
2023-03-19 16:18:19 +01:00
astar.c
Remove "All Rights Reserved" from Blender Foundation copyright code
2023-03-30 10:51:59 +02:00
atomic_disjoint_set.cc
Cleanup: correct misspelling of occurrence
2022-12-05 12:54:02 +11:00
bit_span.cc
Fix: segfault when setting value in empty bit span
2023-02-26 17:26:12 +01:00
bitmap_draw_2d.c
UI: Comments Misspellings of Vertex/Vertices
2022-03-02 10:05:15 -08:00
bitmap.c
BLI_bitmap: ability to declare by-value, and function to find lowest unset bit
2022-07-15 10:20:04 +03:00
BLI_args.c
Cleanup: redundant parenthesis
2022-10-07 22:55:03 +11:00
BLI_array.c
Remove "All Rights Reserved" from Blender Foundation copyright code
2023-03-30 10:51:59 +02:00
BLI_assert.c
Cleanup: Use BLI_assert_unreachable() as example in comment of _BLI_assert_abort.
2022-05-17 16:06:54 +02:00
BLI_color.cc
File headers: SPDX License migration
2022-02-11 09:14:36 +11:00
BLI_dial_2d.c
File headers: SPDX License migration
2022-02-11 09:14:36 +11:00
BLI_dynstr.c
File headers: SPDX License migration
2022-02-11 09:14:36 +11:00
BLI_filelist.c
Cleanup: resolve some unreferenced parameter warnings in MSVC
2023-03-07 21:39:44 -03:00
BLI_ghash_utils.c
Cleanup: spelling in comments
2022-12-05 12:58:18 +11:00
BLI_ghash.c
Cleanup: Use switch and BLI_assert_unreachable() more.
2022-05-17 16:06:54 +02:00
BLI_heap_simple.c
Cleanup: use "num" as a suffix in: source/blender/blenlib
2022-03-30 18:01:22 +11:00
BLI_heap.c
Cleanup: spelling in comments
2023-02-03 12:41:01 +11:00
BLI_index_range.cc
BLI: new C++ BitVector data structure
2022-09-07 13:15:34 +02:00
BLI_kdopbvh.c
Cleanup: use doxygen sections
2023-03-29 14:17:32 +11:00
BLI_linklist_lockfree.c
Remove "All Rights Reserved" from Blender Foundation copyright code
2023-03-30 10:51:59 +02:00
BLI_linklist.c
File headers: SPDX License migration
2022-02-11 09:14:36 +11:00
BLI_memarena.c
Cleanup: use 'u' prefixed integer types for brevity in C code
2022-09-26 11:33:22 +10:00
BLI_memblock.c
Remove "All Rights Reserved" from Blender Foundation copyright code
2023-03-30 10:51:59 +02:00
BLI_memiter.c
Cleanup: various C++ cleanups
2023-02-11 14:04:35 +11:00
BLI_mempool_private.h
Remove "All Rights Reserved" from Blender Foundation copyright code
2023-03-30 10:51:59 +02:00
BLI_mempool.c
Remove "All Rights Reserved" from Blender Foundation copyright code
2023-03-30 10:51:59 +02:00
BLI_mmap.c
Remove "All Rights Reserved" from Blender Foundation copyright code
2023-03-30 10:51:59 +02:00
BLI_timer.c
Remove "All Rights Reserved" from Blender Foundation copyright code
2023-03-30 10:51:59 +02:00
boxpack_2d.c
Cleanup: simplify sorting during uv packing
2023-03-30 12:23:49 +13:00
buffer.c
File headers: SPDX License migration
2022-02-11 09:14:36 +11:00
cache_mutex.cc
BLI: new basic CacheMutex
2022-11-08 15:50:49 +01:00
compute_context.cc
Geometry Nodes: new evaluation system
2022-09-13 08:44:32 +02:00
convexhull_2d.c
Correct sign conversion errors in convexhull_2d.c
2022-09-28 09:36:15 +10:00
cpp_types.cc
Attributes: Add 2D integer vector attribute type
2023-04-14 16:08:05 +02:00
delaunay_2d.cc
Clang-Format: Allow empty functions to be single-line
2023-03-29 16:50:54 +02:00
DLRB_tree.c
Cleanup: spelling, trailing space for comment-blocks
2022-03-31 13:01:41 +11:00
dot_export.cc
BLI: improve node graph export in dot format
2022-12-29 15:09:52 +01:00
dynlib.c
File headers: SPDX License migration
2022-02-11 09:14:36 +11:00
easing.c
File headers: SPDX License migration
2022-02-11 09:14:36 +11:00
edgehash.c
File headers: SPDX License migration
2022-02-11 09:14:36 +11:00
endian_switch.c
Cleanup: use 'u' prefixed integer types for brevity & cast style
2022-09-25 18:26:27 +10:00
expr_pylike_eval.c
Cleanup: rename cnt to count
2022-03-16 11:58:22 +11:00
fileops.c
Fix Build Warning in fileops.c
2023-04-18 12:53:45 -07:00
fileops.cc
File headers: SPDX License migration
2022-02-11 09:14:36 +11:00
filereader_file.c
Remove "All Rights Reserved" from Blender Foundation copyright code
2023-03-30 10:51:59 +02:00
filereader_gzip.c
Remove "All Rights Reserved" from Blender Foundation copyright code
2023-03-30 10:51:59 +02:00
filereader_memory.c
Remove "All Rights Reserved" from Blender Foundation copyright code
2023-03-30 10:51:59 +02:00
filereader_zstd.c
Remove "All Rights Reserved" from Blender Foundation copyright code
2023-03-30 10:51:59 +02:00
fnmatch.c
File headers: manually convert files to use SPDX headers
2022-02-11 15:15:49 +11:00
generic_vector_array.cc
BLI: move generic data structures to blenlib
2022-03-19 08:26:29 +01:00
generic_virtual_array.cc
Clang-Format: Allow empty functions to be single-line
2023-03-29 16:50:54 +02:00
generic_virtual_vector_array.cc
Cleanup: replace UNUSED macro with commented args in C++ code
2022-10-03 17:38:16 -05:00
gsqueue.c
Cleanup: use "num" as a suffix in: source/blender/blenlib
2022-03-30 18:01:22 +11:00
hash_md5.c
Cleanup: spelling in comments, additional white space
2022-06-07 15:01:03 +10:00
hash_mm2a.c
Cleanup: use 'u' prefixed integer types for brevity & cast style
2022-09-25 18:26:27 +10:00
hash_mm3.c
Cleanup: use 'u' prefixed integer types for brevity in C code
2022-09-26 11:33:22 +10:00
implicit_sharing.cc
Cleanup: use const for implicit sharing info
2023-04-20 23:32:33 +02:00
index_mask.cc
Curves: initial surface collision for curves sculpt mode
2023-02-11 13:46:37 +01:00
jitter_2d.c
Cleanup: use 'u' prefixed integer types for brevity & cast style
2022-09-25 18:26:27 +10:00
kdtree_1d.c
File headers: SPDX License migration
2022-02-11 09:14:36 +11:00
kdtree_2d.c
File headers: SPDX License migration
2022-02-11 09:14:36 +11:00
kdtree_3d.c
File headers: SPDX License migration
2022-02-11 09:14:36 +11:00
kdtree_4d.c
File headers: SPDX License migration
2022-02-11 09:14:36 +11:00
kdtree_impl.h
Cleanup: use '#' prefix for issues instead of 'T'
2023-02-12 14:56:05 +11:00
lasso_2d.c
Cleanup: use 'u' prefixed integer types for brevity & cast style
2022-09-25 18:26:27 +10:00
lazy_threading.cc
Cleanup: quiet clang compiler warnings
2023-02-10 11:27:30 +11:00
length_parameterize.cc
BLI: refactor length parameterization
2022-07-02 21:51:58 +02:00
list_sort_impl.h
Cleanup: quiet warning building with MSVC (_CONCAT redefined)
2022-10-31 11:15:38 +11:00
listbase.cc
BLI ListBase: Add new 'SplitAfter' given link util.
2023-02-06 17:58:40 +01:00
math_base_inline.c
Cleanup: move doc-strings into headers, remove duplicates
2023-03-29 14:37:34 +11:00
math_base_safe_inline.c
File headers: SPDX License migration
2022-02-11 09:14:36 +11:00
math_base.c
Cleanup: redundant parenthesis
2022-10-07 22:55:03 +11:00
math_bits_inline.c
File headers: SPDX License migration
2022-02-11 09:14:36 +11:00
math_boolean.cc
Cleanup: move doc-strings into headers, remove duplicates
2023-03-29 14:37:34 +11:00
math_color_blend_inline.c
File headers: SPDX License migration
2022-02-11 09:14:36 +11:00
math_color_inline.c
File headers: SPDX License migration
2022-02-11 09:14:36 +11:00
math_color.c
Cleanup: redundant parenthesis
2022-10-07 22:55:03 +11:00
math_geom_inline.c
File headers: SPDX License migration
2022-02-11 09:14:36 +11:00
math_geom.c
Fix #106469: unstable tessellation with quad-flipping detection
2023-04-21 15:02:47 +10:00
math_interp.c
Remove "All Rights Reserved" from Blender Foundation copyright code
2023-03-30 10:51:59 +02:00
math_matrix.c
Cleanup: replace binary '&' with '&&' check
2023-04-21 09:13:09 +10:00
math_matrix.cc
BLI: Math: Move rotation types template out of math::detail
2023-03-10 11:48:15 +01:00
math_rotation.c
Revert release branch only commit after merge
2023-02-20 11:51:16 +01:00
math_rotation.cc
BLI: Rotation C++ API
2023-03-09 18:15:22 +01:00
math_solvers.c
Remove "All Rights Reserved" from Blender Foundation copyright code
2023-03-30 10:51:59 +02:00
math_statistics.c
Remove "All Rights Reserved" from Blender Foundation copyright code
2023-03-30 10:51:59 +02:00
math_time.c
Remove "All Rights Reserved" from Blender Foundation copyright code
2023-03-30 10:51:59 +02:00
math_vec.cc
Cleanup: Rename BLI_math_vec_types* files to BLI_math_vector_types
2023-01-06 20:09:51 +01:00
math_vector_inline.c
Fix T101211: Image jitters when scaling by large values
2022-11-27 21:33:05 +01:00
math_vector.c
Cleanup: balance doxygen grouping, minor grouping adjustment
2023-04-19 09:02:21 +10:00
memory_utils.c
File headers: SPDX License migration
2022-02-11 09:14:36 +11:00
mesh_boolean.cc
Cleanup: use '#' prefix for issues instead of 'T'
2023-02-12 14:56:05 +11:00
mesh_intersect.cc
Fix #106469: unstable tessellation with quad-flipping detection
2023-04-21 15:02:47 +10:00
noise.c
Cleanup: redundant parenthesis
2022-10-07 22:55:03 +11:00
noise.cc
Cleanup: replace C-style casts with functional casts for numeric types
2022-09-25 20:17:08 +10:00
offset_indices.cc
Cleanup: Deduplicate OffsetIndices utility for meshes and curves
2023-04-04 22:12:17 +02:00
path_util.c
Cleanup: add win32 suffix to BLI_path_is_abs
2023-04-21 09:46:06 +10:00
polyfill_2d_beautify.c
Cleanup: use '#' prefix for issues instead of 'T'
2023-02-12 14:56:05 +11:00
polyfill_2d.c
Cleanup: use sized int types for polyfill_2d
2023-02-12 16:35:24 +11:00
quadric.c
Cleanup: use '#' prefix for issues instead of 'T'
2023-02-12 14:56:05 +11:00
rand.cc
Cleanup: replace C-style casts with functional casts for numeric types
2022-09-25 20:17:08 +10:00
rct.c
Fix: Incorrect coordinates used in BLI_rct*_isect_segment functions
2022-07-12 19:28:26 +10:00
resource_scope.cc
File headers: SPDX License migration
2022-02-11 09:14:36 +11:00
scanfill_utils.c
Cleanup: remove/comment unused code, simplify casts
2023-01-19 17:10:42 +11:00
scanfill.c
Cleanup: use '#' prefix for issues instead of 'T'
2023-02-12 14:56:05 +11:00
serialize.cc
File headers: add missing copyright, add MIT to SPDX licenses
2022-02-11 14:56:03 +11:00
session_uuid.c
File headers: SPDX License migration
2022-02-11 09:14:36 +11:00
smaa_textures.c
Cleanup: move doc-strings into headers, remove duplicates
2023-03-29 14:37:34 +11:00
smallhash.c
Remove "All Rights Reserved" from Blender Foundation copyright code
2023-03-30 10:51:59 +02:00
sort_utils.c
Remove "All Rights Reserved" from Blender Foundation copyright code
2023-03-30 10:51:59 +02:00
sort.c
Remove "All Rights Reserved" from Blender Foundation copyright code
2023-03-30 10:51:59 +02:00
stack.c
Cleanup: use 'u' prefixed integer types for brevity in C code
2022-09-26 11:33:22 +10:00
storage_apple.mm
Remove "All Rights Reserved" from Blender Foundation copyright code
2023-03-30 10:51:59 +02:00
storage.c
Cleanup: comment block formatting
2023-02-27 21:51:57 +11:00
string_cursor_utf8.c
Remove "All Rights Reserved" from Blender Foundation copyright code
2023-03-30 10:51:59 +02:00
string_search.cc
UI: Add slash character support to fuzzy search initials mode
2023-04-12 23:53:36 +02:00
string_utf8.c
Cleanup: add doc-strings to upper/lowecase functions
2023-04-12 11:24:12 +10:00
string_utils.c
Remove "All Rights Reserved" from Blender Foundation copyright code
2023-03-30 10:51:59 +02:00
string.c
BLI: Prevent Overflow in Grouped Number Output
2023-03-02 17:38:36 +01:00
system_win32.c
File headers: SPDX License migration
2022-02-11 09:14:36 +11:00
system.c
Cleanup: use 'u' prefixed integer types for brevity in C code
2022-09-26 11:33:22 +10:00
task_graph.cc
Cleanup: replace UNUSED macro with commented args in C++ code
2022-10-03 17:38:16 -05:00
task_iterator.c
Cleanup: remove redundant double parenthesis
2022-09-25 15:34:32 +10:00
task_pool.cc
Cleanup: move doc-strings into headers, remove duplicates
2023-03-29 14:37:34 +11:00
task_range.cc
Cleanup: replace UNUSED macro with commented args in C++ code
2022-10-03 17:38:16 -05:00
task_scheduler.cc
Fix T102292: deadlock in geometry nodes evaluation with task isolation
2022-11-06 15:07:32 +01:00
tempfile.c
BLI: Add utility to access system-wide temporary directory
2023-03-24 14:52:43 +01:00
threads.cc
Remove "All Rights Reserved" from Blender Foundation copyright code
2023-03-30 10:51:59 +02:00
time.c
File headers: SPDX License migration
2022-02-11 09:14:36 +11:00
timecode.c
Remove "All Rights Reserved" from Blender Foundation copyright code
2023-03-30 10:51:59 +02:00
timeit.cc
BLI: add last time to scoped averaged time
2022-12-24 14:01:05 +01:00
uuid.cc
Fix deprecation warnings about printf() on macOS
2022-11-08 12:01:01 +01:00
uvproject.c
Refactor: Rename Object->obmat to Object->object_to_world
2022-11-01 10:48:18 +01:00
voronoi_2d.c
Remove "All Rights Reserved" from Blender Foundation copyright code
2023-03-30 10:51:59 +02:00
voxel.c
Cleanup: use C-style code comments, format
2023-03-03 16:29:22 +11:00
winstuff_dir.c
File headers: SPDX License migration
2022-02-11 09:14:36 +11:00
winstuff.c
Cleanup: format
2023-04-19 08:02:42 +10:00