diff options
author | Clément Foucault <foucault.clem@gmail.com> | 2022-01-12 14:19:00 +0300 |
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committer | Clément Foucault <foucault.clem@gmail.com> | 2022-01-12 14:19:39 +0300 |
commit | a2c1c368af48644fa8995ecbe7138cc0d7900c30 (patch) | |
tree | 39cd435d2033f2952d2c39ce302816b037263c63 /source/blender/makesrna | |
parent | d320f3677e2a98b12d386a3e6f3da2d7b7018463 (diff) |
BLI: Refactor vector types & functions to use templates
This patch implements the vector types (i.e:float2) by making heavy
usage of templating. All vector functions are now outside of the vector
classes (inside the blender::math namespace) and are not vector size
dependent for the most part.
In the ongoing effort to make shaders less GL centric, we are aiming
to share more code between GLSL and C++ to avoid code duplication.
Motivations:
- We are aiming to share UBO and SSBO structures between GLSL and C++.
This means we will use many of the existing vector types and others we
currently don't have (uintX, intX). All these variations were asking
for many more code duplication.
- Deduplicate existing code which is duplicated for each vector size.
- We also want to share small functions. Which means that vector functions
should be static and not in the class namespace.
- Reduce friction to use these types in new projects due to their
incompleteness.
- The current state of the BLI_(float|double|mpq)(2|3|4).hh is a bit of a
let down. Most clases are incomplete, out of sync with each others with
different codestyles, and some functions that should be static are not
(i.e: float3::reflect()).
Upsides:
- Still support .x, .y, .z, .w for readability.
- Compact, readable and easilly extendable.
- All of the vector functions are available for all the vectors types and
can be restricted to certain types. Also template specialization let us
define exception for special class (like mpq).
- With optimization ON, the compiler unroll the loops and performance is
the same.
Downsides:
- Might impact debugability. Though I would arge that the bugs are rarelly
caused by the vector class itself (since the operations are quite trivial)
but by the type conversions.
- Might impact compile time. I did not saw a significant impact since the
usage is not really widespread.
- Functions needs to be rewritten to support arbitrary vector length. For
instance, one can't call len_squared_v3v3 in math::length_squared() and
call it a day.
- Type cast does not work with the template version of the math:: vector
functions. Meaning you need to manually cast float * and (float *)[3] to
float3 for the function calls.
i.e: math::distance_squared(float3(nearest.co), positions[i]);
- Some parts might loose in readability:
float3::dot(v1.normalized(), v2.normalized())
becoming
math::dot(math::normalize(v1), math::normalize(v2))
But I propose, when appropriate, to use
using namespace blender::math; on function local or file scope to
increase readability. dot(normalize(v1), normalize(v2))
Consideration:
- Include back .length() method. It is quite handy and is more C++
oriented.
- I considered the GLM library as a candidate for replacement.
It felt like too much for what we need and would be difficult to
extend / modify to our needs.
- I used Macros to reduce code in operators declaration and potential
copy paste bugs. This could reduce debugability and could be reverted.
- This touches delaunay_2d.cc and the intersection code. I would like to
know @Howard Trickey (howardt) opinion on the matter.
- The noexcept on the copy constructor of mpq(2|3) is being removed.
But according to @Jacques Lucke (JacquesLucke) it is not a real problem
for now.
I would like to give a huge thanks to @Jacques Lucke (JacquesLucke) who
helped during this and pushed me to reduce the duplication further.
Reviewed By: brecht, sergey, JacquesLucke
Differential Revision: http://developer.blender.org/D13791
Diffstat (limited to 'source/blender/makesrna')
-rw-r--r-- | source/blender/makesrna/RNA_access.h | 2 | ||||
-rw-r--r-- | source/blender/makesrna/intern/rna_internal.h | 2 | ||||
-rw-r--r-- | source/blender/makesrna/intern/rna_internal_types.h | 2 | ||||
-rw-r--r-- | source/blender/makesrna/intern/rna_modifier.c | 7 | ||||
-rw-r--r-- | source/blender/makesrna/intern/rna_nodetree.c | 7 |
5 files changed, 5 insertions, 15 deletions
diff --git a/source/blender/makesrna/RNA_access.h b/source/blender/makesrna/RNA_access.h index 07897231566..20f77626e49 100644 --- a/source/blender/makesrna/RNA_access.h +++ b/source/blender/makesrna/RNA_access.h @@ -1742,7 +1742,7 @@ bool RNA_struct_override_matches(struct Main *bmain, struct PointerRNA *ptr_local, struct PointerRNA *ptr_reference, const char *root_path, - size_t root_path_len, + const size_t root_path_len, struct IDOverrideLibrary *override, eRNAOverrideMatch flags, eRNAOverrideMatchResult *r_report_flags); diff --git a/source/blender/makesrna/intern/rna_internal.h b/source/blender/makesrna/intern/rna_internal.h index 95ad184c6b9..20e6e931b4b 100644 --- a/source/blender/makesrna/intern/rna_internal.h +++ b/source/blender/makesrna/intern/rna_internal.h @@ -544,7 +544,7 @@ int rna_property_override_diff_default(struct Main *bmain, int mode, struct IDOverrideLibrary *override, const char *rna_path, - size_t rna_path_len, + const size_t rna_path_len, int flags, bool *r_override_changed); diff --git a/source/blender/makesrna/intern/rna_internal_types.h b/source/blender/makesrna/intern/rna_internal_types.h index 723ae384fdf..f0e32a19d04 100644 --- a/source/blender/makesrna/intern/rna_internal_types.h +++ b/source/blender/makesrna/intern/rna_internal_types.h @@ -214,7 +214,7 @@ typedef int (*RNAPropOverrideDiff)(struct Main *bmain, int mode, struct IDOverrideLibrary *override, const char *rna_path, - size_t rna_path_len, + const size_t rna_path_len, int flags, bool *r_override_changed); diff --git a/source/blender/makesrna/intern/rna_modifier.c b/source/blender/makesrna/intern/rna_modifier.c index 0f0734c8448..d46ae13b482 100644 --- a/source/blender/makesrna/intern/rna_modifier.c +++ b/source/blender/makesrna/intern/rna_modifier.c @@ -331,12 +331,7 @@ const EnumPropertyItem rna_enum_modifier_triangulate_quad_method_items[] = { "SHORTEST_DIAGONAL", 0, "Shortest Diagonal", - "Split the quads along their shortest diagonal"}, - {MOD_TRIANGULATE_QUAD_LONGEDGE, - "LONGEST_DIAGONAL", - 0, - "Longest Diagonal", - "Split the quads along their longest diagonal"}, + "Split the quads based on the distance between the vertices"}, {0, NULL, 0, NULL, NULL}, }; diff --git a/source/blender/makesrna/intern/rna_nodetree.c b/source/blender/makesrna/intern/rna_nodetree.c index ecbeadf1fa4..e7307e6e058 100644 --- a/source/blender/makesrna/intern/rna_nodetree.c +++ b/source/blender/makesrna/intern/rna_nodetree.c @@ -9488,12 +9488,7 @@ static void def_geo_triangulate(StructRNA *srna) "SHORTEST_DIAGONAL", 0, "Shortest Diagonal", - "Split the quads along their shortest diagonal"}, - {GEO_NODE_TRIANGULATE_QUAD_LONGEDGE, - "LONGEST_DIAGONAL", - 0, - "Longest Diagonal", - "Split the quads along their longest diagonal"}, + "Split the quads based on the distance between the vertices"}, {0, NULL, 0, NULL, NULL}, }; |