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Fix: New FBX importer was not handling blender specific FullWeights

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- Update to latest ufbx version that adds support for FullWeights
- Handle that in the same way as the Python importer did
- Add test files from ufbx test suite

Pull Request: https://projects.blender.org/blender/blender/pulls/138811
This commit is contained in:
Aras Pranckevicius
2025-05-13 15:43:08 +02:00
committed by Aras Pranckevicius
parent fba5e2ed58
commit 6a0e6f5cff
8 changed files with 455 additions and 40 deletions
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2
extern/ufbx/README.blender vendored
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@@ -2,6 +2,6 @@ Project: ufbx - Single source file FBX loader
URL: https://github.com/ufbx/ufbx
License: SPDX:MIT
Copyright: "Copyright (c) 2020 Samuli Raivio"
Upstream version: v0.18.1-dev (42860b7, 2025-04-11)
Upstream version: v0.19.0-dev (6c0179d, 2025-04-27)
Local modifications:
* None

171
extern/ufbx/ufbx.c vendored
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@@ -868,7 +868,7 @@ enum { UFBX_MAXIMUM_ALIGNMENT = sizeof(void*) > 8 ? sizeof(void*) : 8 };
// -- Version
#define UFBX_SOURCE_VERSION ufbx_pack_version(0, 18, 1)
#define UFBX_SOURCE_VERSION ufbx_pack_version(0, 19, 0)
ufbx_abi_data_def const uint32_t ufbx_source_version = UFBX_SOURCE_VERSION;
ufbx_static_assert(source_header_version, UFBX_SOURCE_VERSION/1000u == UFBX_HEADER_VERSION/1000u);
@@ -3401,7 +3401,7 @@ static ufbxi_noinline void ufbxi_panicf_imp(ufbx_panic *panic, const char *fmt,
static ufbxi_noinline int ufbxi_fail_imp_err(ufbx_error *err, const char *cond, const char *func, uint32_t line)
{
if (cond[0] == '$') {
if (cond && cond[0] == '$') {
if (!err->description.data) {
err->description.data = cond + 1;
err->description.length = strlen(err->description.data);
@@ -3416,6 +3416,8 @@ static ufbxi_noinline int ufbxi_fail_imp_err(ufbx_error *err, const char *cond,
// NOTE: This is the base function all fails boil down to, place a breakpoint here to
// break at the first error
#if UFBXI_FEATURE_ERROR_STACK
ufbx_assert(cond);
ufbx_assert(func);
if (err->stack_size < UFBX_ERROR_STACK_MAX_DEPTH) {
ufbx_error_frame *frame = &err->stack[err->stack_size++];
frame->description.data = cond;
@@ -3524,14 +3526,21 @@ static ufbxi_noinline void ufbxi_clear_error(ufbx_error *err)
#define ufbxi_line __LINE__
#define ufbxi_cond_str(cond) #cond
#else
#define ufbxi_function ""
#define ufbxi_function NULL
#define ufbxi_line 0
#define ufbxi_cond_str(cond) ""
#endif
#define ufbxi_check_err(err, cond) do { if (ufbxi_unlikely(!ufbxi_trace(cond))) { ufbxi_fail_imp_err((err), ufbxi_cond_str(cond), ufbxi_function, ufbxi_line); return 0; } } while (0)
#define ufbxi_check_return_err(err, cond, ret) do { if (ufbxi_unlikely(!ufbxi_trace(cond))) { ufbxi_fail_imp_err((err), ufbxi_cond_str(cond), ufbxi_function, ufbxi_line); return ret; } } while (0)
#define ufbxi_fail_err(err, desc) return ufbxi_fail_imp_err(err, desc, ufbxi_function, ufbxi_line)
#if UFBXI_FEATURE_ERROR_STACK
#define ufbxi_fail_err_no_msg(err, cond, func, line) ufbxi_fail_imp_err((err), (cond), (func), (line))
#else
static ufbxi_noinline int ufbxi_fail_imp_err_no_stack(ufbx_error *err) { return ufbxi_fail_imp_err(err, NULL, NULL, 0); }
#define ufbxi_fail_err_no_msg(err, cond, func, line) ufbxi_fail_imp_err_no_stack((err))
#endif
#define ufbxi_check_err(err, cond) do { if (ufbxi_unlikely(!ufbxi_trace(cond))) { ufbxi_fail_err_no_msg((err), ufbxi_cond_str(cond), ufbxi_function, ufbxi_line); return 0; } } while (0)
#define ufbxi_check_return_err(err, cond, ret) do { if (ufbxi_unlikely(!ufbxi_trace(cond))) { ufbxi_fail_err_no_msg((err), ufbxi_cond_str(cond), ufbxi_function, ufbxi_line); return ret; } } while (0)
#define ufbxi_fail_err(err, desc) return ufbxi_fail_err_no_msg(err, desc, ufbxi_function, ufbxi_line)
#define ufbxi_check_err_msg(err, cond, msg) do { if (ufbxi_unlikely(!ufbxi_trace(cond))) { ufbxi_fail_imp_err((err), ufbxi_error_msg(ufbxi_cond_str(cond), msg), ufbxi_function, ufbxi_line); return 0; } } while (0)
#define ufbxi_check_return_err_msg(err, cond, ret, msg) do { if (ufbxi_unlikely(!ufbxi_trace(cond))) { ufbxi_fail_imp_err((err), ufbxi_error_msg(ufbxi_cond_str(cond), msg), ufbxi_function, ufbxi_line); return ret; } } while (0)
@@ -6414,7 +6423,6 @@ typedef struct {
uint64_t usemtl_fbx_id;
uint32_t usemtl_index;
ufbx_string usemtl_name;
uint32_t face_material;
@@ -6575,6 +6583,7 @@ typedef struct {
bool has_geometry_transform_nodes;
bool has_scale_helper_nodes;
bool retain_vertex_w;
bool blender_full_weights;
ufbx_mirror_axis mirror_axis;
@@ -6626,10 +6635,17 @@ static ufbxi_noinline int ufbxi_fail_imp(ufbxi_context *uc, const char *cond, co
return ufbxi_fail_imp_err(&uc->error, cond, func, line);
}
#define ufbxi_check(cond) if (ufbxi_unlikely(!ufbxi_trace(cond))) return ufbxi_fail_imp(uc, ufbxi_cond_str(cond), ufbxi_function, ufbxi_line)
#define ufbxi_check_return(cond, ret) do { if (ufbxi_unlikely(!ufbxi_trace(cond))) { ufbxi_fail_imp(uc, ufbxi_cond_str(cond), ufbxi_function, ufbxi_line); return ret; } } while (0)
#define ufbxi_fail(desc) return ufbxi_fail_imp(uc, desc, ufbxi_function, ufbxi_line)
#define ufbxi_fail_return(desc, ret) do { ufbxi_fail_imp(uc, desc, ufbxi_function, ufbxi_line); return ret; } while (0)
#if UFBXI_FEATURE_ERROR_STACK
#define ufbxi_fail_no_msg(uc, cond, func, line) ufbxi_fail_imp((uc), (cond), (func), (line))
#else
static ufbxi_noinline int ufbxi_fail_imp_no_stack(ufbxi_context *uc) { return ufbxi_fail_imp_err(&uc->error, NULL, NULL, 0); }
#define ufbxi_fail_no_msg(uc, cond, func, line) ufbxi_fail_imp_no_stack((uc))
#endif
#define ufbxi_check(cond) if (ufbxi_unlikely(!ufbxi_trace(cond))) return ufbxi_fail_no_msg(uc, ufbxi_cond_str(cond), ufbxi_function, ufbxi_line)
#define ufbxi_check_return(cond, ret) do { if (ufbxi_unlikely(!ufbxi_trace(cond))) { ufbxi_fail_no_msg(uc, ufbxi_cond_str(cond), ufbxi_function, ufbxi_line); return ret; } } while (0)
#define ufbxi_fail(desc) return ufbxi_fail_no_msg(uc, desc, ufbxi_function, ufbxi_line)
#define ufbxi_fail_return(desc, ret) do { ufbxi_fail_no_msg(uc, desc, ufbxi_function, ufbxi_line); return ret; } while (0)
#define ufbxi_check_msg(cond, msg) if (ufbxi_unlikely(!ufbxi_trace(cond))) return ufbxi_fail_imp(uc, ufbxi_error_msg(ufbxi_cond_str(cond), msg), ufbxi_function, ufbxi_line)
#define ufbxi_check_return_msg(cond, ret, msg) do { if (ufbxi_unlikely(!ufbxi_trace(cond))) { ufbxi_fail_imp(uc, ufbxi_error_msg(ufbxi_cond_str(cond), msg), ufbxi_function, ufbxi_line); return ret; } } while (0)
@@ -7934,7 +7950,7 @@ typedef enum {
typedef enum {
UFBXI_ARRAY_FLAG_RESULT = 0x1, // < Allocate the array from the result buffer
UFBXI_ARRAY_FLAG_TMP_BUF = 0x2, // < Allocate the array from the result buffer
UFBXI_ARRAY_FLAG_TMP_BUF = 0x2, // < Allocate the array from the long-term temporary buffer
UFBXI_ARRAY_FLAG_PAD_BEGIN = 0x4, // < Pad the begin of the array with 4 zero elements to guard from invalid -1 index accesses
UFBXI_ARRAY_FLAG_ACCURATE_F32 = 0x8, // < Must be parsed as bit-accurate 32-bit floats
} ufbxi_array_flags;
@@ -8155,7 +8171,7 @@ static bool ufbxi_is_array_node(ufbxi_context *uc, ufbxi_parse_state parent, con
// in versions >= 7200 as some of the elements aren't actually floats (!)
info->type = uc->from_ascii && uc->version >= 7200 ? 'i' : 'f';
if (uc->opts.ignore_animation) info->type = '-';
if (uc->from_ascii && uc->version >= 7200) {
if (uc->from_ascii && uc->version < 7200) {
info->flags |= UFBXI_ARRAY_FLAG_ACCURATE_F32;
}
return true;
@@ -8403,14 +8419,8 @@ static bool ufbxi_is_array_node(ufbxi_context *uc, ufbxi_parse_state parent, con
info->flags = UFBXI_ARRAY_FLAG_RESULT;
return true;
} else if (name == ufbxi_FullWeights) {
// Ignore blend shape FullWeights as it's used in Blender for vertex groups
// which we don't currently handle. https://developer.blender.org/T90382
// TODO: Should we present this to users anyway somehow?
info->type = 'r';
if (!uc->opts.disable_quirks && uc->exporter == UFBX_EXPORTER_BLENDER_BINARY) {
info->type = '-';
}
info->flags |= UFBXI_ARRAY_FLAG_TMP_BUF;
info->flags = (uint8_t)(info->flags | (uc->blender_full_weights ? UFBXI_ARRAY_FLAG_RESULT : UFBXI_ARRAY_FLAG_TMP_BUF));
return true;
} else if (!strcmp(name, "TransformAssociateModel")) {
info->type = uc->opts.retain_dom ? 'r' : '-';
@@ -10722,14 +10732,14 @@ ufbxi_nodiscard static ufbxi_noinline int ufbxi_retain_dom_node(ufbxi_context *u
val->value_float = (double)(val->value_int = (int64_t)arr->size);
switch (arr->type) {
case 'c': val->type = UFBX_DOM_VALUE_ARRAY_I8; break;
case 'b': val->type = UFBX_DOM_VALUE_ARRAY_I8; break;
case 'c': val->type = UFBX_DOM_VALUE_BLOB; break;
case 'b': val->type = UFBX_DOM_VALUE_BLOB; break;
case 'i': val->type = UFBX_DOM_VALUE_ARRAY_I32; break;
case 'l': val->type = UFBX_DOM_VALUE_ARRAY_I64; break;
case 'f': val->type = UFBX_DOM_VALUE_ARRAY_F32; break;
case 'd': val->type = UFBX_DOM_VALUE_ARRAY_F64; break;
case 's': val->type = UFBX_DOM_VALUE_ARRAY_RAW_STRING; break;
case 'C': val->type = UFBX_DOM_VALUE_ARRAY_RAW_STRING; break;
case 's': val->type = UFBX_DOM_VALUE_ARRAY_BLOB; break;
case 'C': val->type = UFBX_DOM_VALUE_ARRAY_BLOB; break;
case '-': val->type = UFBX_DOM_VALUE_ARRAY_IGNORED; break;
default: ufbxi_fail("Bad array type");
}
@@ -12033,7 +12043,7 @@ static bool ufbxi_match_version_string(const char *fmt, ufbx_string str, uint32_
return true;
}
ufbxi_nodiscard static int ufbxi_match_exporter(ufbxi_context *uc)
ufbxi_nodiscard ufbxi_noinline static int ufbxi_match_exporter(ufbxi_context *uc)
{
ufbx_string creator = uc->scene.metadata.creator;
uint32_t version[3] = { 0 };
@@ -12069,6 +12079,10 @@ ufbxi_nodiscard static int ufbxi_match_exporter(ufbxi_context *uc)
uc->exporter_version = 0;
}
if (uc->exporter == UFBX_EXPORTER_BLENDER_BINARY) {
uc->blender_full_weights = true;
}
return 1;
}
@@ -17088,6 +17102,8 @@ ufbxi_nodiscard static ufbxi_noinline int ufbxi_obj_parse_indices(ufbxi_context
uc->obj.face_material = index - mesh->usemtl_base;
}
uc->obj.face_material = entry->user_id - mesh->usemtl_base;
} else {
uc->obj.face_material = UFBX_NO_INDEX;
}
}
@@ -17246,7 +17262,14 @@ ufbxi_nodiscard static ufbxi_noinline int ufbxi_obj_parse_comment(ufbxi_context
ufbxi_nodiscard static ufbxi_noinline int ufbxi_obj_parse_material(ufbxi_context *uc)
{
ufbxi_check(uc->obj.num_tokens >= 2);
uc->obj.material_dirty = true;
// Allow empty `usemtl` lines to specify "no material".
if (uc->obj.num_tokens < 2) {
uc->obj.usemtl_fbx_id = 0;
return 1;
}
ufbx_string name = ufbxi_obj_span_token(uc, 1, SIZE_MAX);
ufbxi_check(ufbxi_push_string_place_str(&uc->string_pool, &name, false));
@@ -17257,7 +17280,6 @@ ufbxi_nodiscard static ufbxi_noinline int ufbxi_obj_parse_material(ufbxi_context
ufbxi_fbx_id_entry *entry = ufbxi_find_fbx_id(uc, fbx_id);
uc->obj.usemtl_fbx_id = fbx_id;
uc->obj.usemtl_name = name;
if (!entry) {
ufbxi_element_info info = { 0 };
@@ -17276,8 +17298,6 @@ ufbxi_nodiscard static ufbxi_noinline int ufbxi_obj_parse_material(ufbxi_context
uc->obj.tmp_materials[id] = material;
}
uc->obj.material_dirty = true;
return 1;
}
@@ -17789,7 +17809,8 @@ ufbxi_nodiscard static ufbxi_noinline int ufbxi_obj_parse_mtl(ufbxi_context *uc)
ufbx_string cmd = uc->obj.tokens[0];
if (ufbxi_str_equal(cmd, ufbxi_str_c("newmtl"))) {
// HACK: Reuse mesh material parsing
// HACK: Reuse mesh material parsing, but don't allow for empty material name
ufbxi_check(uc->obj.num_tokens >= 2);
ufbxi_check(ufbxi_obj_flush_material(uc));
ufbxi_check(ufbxi_obj_parse_material(uc));
} else if (cmd.length > 4 && !memcmp(cmd.data, "map_", 4)) {
@@ -21776,10 +21797,23 @@ ufbxi_nodiscard ufbxi_noinline static int ufbxi_finalize_scene(ufbxi_context *uc
for (size_t i = 0; i < channel->keyframes.count; i++) {
ufbx_blend_keyframe *key = &channel->keyframes.data[i];
key->target_weight = 1.0f;
if (i < full_weights->count) {
key->target_weight = full_weights->data[i] / (ufbx_real)100.0;
} else {
key->target_weight = 1.0f;
if (!uc->blender_full_weights) {
key->target_weight = full_weights->data[i] / (ufbx_real)100.0;
} else if (full_weights->count == key->shape->num_offsets) {
if (i == 0) {
// Duplicate `index_data` for modification if we retain DOM
if (uc->opts.retain_dom) {
full_weights->data = ufbxi_push_copy(&uc->result, ufbx_real, full_weights->count, full_weights->data);
ufbxi_check(full_weights->data);
}
ufbxi_for_list(ufbx_real, p_weight, *full_weights) {
*p_weight /= (ufbx_real)100.0;
}
}
key->shape->offset_weights = *full_weights;
}
}
}
@@ -21790,7 +21824,6 @@ ufbxi_nodiscard ufbxi_noinline static int ufbxi_finalize_scene(ufbxi_context *uc
channel->target_shape = channel->keyframes.data[channel->keyframes.count - 1].shape;
}
}
ufbxi_buf_free(&uc->tmp_full_weights);
{
// Generate and patch procedural index buffers
@@ -31817,10 +31850,15 @@ ufbx_abi void ufbx_add_blend_shape_vertex_offsets(const ufbx_blend_shape *shape,
size_t num_offsets = shape->num_offsets;
uint32_t *vertex_indices = shape->offset_vertices.data;
ufbx_vec3 *offsets = shape->position_offsets.data;
ufbx_real_list weights = shape->offset_weights;
for (size_t i = 0; i < num_offsets; i++) {
uint32_t index = vertex_indices[i];
if (index < num_vertices) {
ufbxi_add_weighted_vec3(&vertices[index], offsets[i], weight);
ufbx_real vertex_weight = weight;
if (i < weights.count) {
vertex_weight *= weights.data[i];
}
ufbxi_add_weighted_vec3(&vertices[index], offsets[i], vertex_weight);
}
}
}
@@ -32819,6 +32857,69 @@ ufbx_abi ufbx_audio_clip *ufbx_as_audio_clip(const ufbx_element *element) { retu
ufbx_abi ufbx_pose *ufbx_as_pose(const ufbx_element *element) { return element && element->type == UFBX_ELEMENT_POSE ? (ufbx_pose*)element : NULL; }
ufbx_abi ufbx_metadata_object *ufbx_as_metadata_object(const ufbx_element *element) { return element && element->type == UFBX_ELEMENT_METADATA_OBJECT ? (ufbx_metadata_object*)element : NULL; }
ufbx_abi bool ufbx_dom_is_array(const ufbx_dom_node *node) {
if (!node || node->values.count != 1) return false;
ufbx_dom_value v = node->values.data[0];
return v.type >= UFBX_DOM_VALUE_ARRAY_I32 && v.type <= UFBX_DOM_VALUE_ARRAY_BLOB;
}
ufbx_abi size_t ufbx_dom_array_size(const ufbx_dom_node *node) {
return ufbx_dom_is_array(node) ? (size_t)node->values.data[0].value_int : (size_t)0;
}
ufbx_abi ufbx_int32_list ufbx_dom_as_int32_list(const ufbx_dom_node *node) {
ufbx_int32_list list = { NULL, 0 };
if (node && node->values.count == 1 && node->values.data[0].type == UFBX_DOM_VALUE_ARRAY_I32) {
ufbx_dom_value value = node->values.data[0];
list.data = (int32_t*)value.value_blob.data;
list.count = value.value_blob.size / sizeof(int32_t);
}
return list;
}
ufbx_abi ufbx_int64_list ufbx_dom_as_int64_list(const ufbx_dom_node *node) {
ufbx_int64_list list = { NULL, 0 };
if (node && node->values.count == 1 && node->values.data[0].type == UFBX_DOM_VALUE_ARRAY_I64) {
ufbx_dom_value value = node->values.data[0];
list.data = (int64_t*)value.value_blob.data;
list.count = value.value_blob.size / sizeof(int64_t);
}
return list;
}
ufbx_abi ufbx_float_list ufbx_dom_as_float_list(const ufbx_dom_node *node) {
ufbx_float_list list = { NULL, 0 };
if (node && node->values.count == 1 && node->values.data[0].type == UFBX_DOM_VALUE_ARRAY_F32) {
ufbx_dom_value value = node->values.data[0];
list.data = (float*)value.value_blob.data;
list.count = value.value_blob.size / sizeof(float);
}
return list;
}
ufbx_abi ufbx_double_list ufbx_dom_as_double_list(const ufbx_dom_node *node) {
ufbx_double_list list = { NULL, 0 };
if (node && node->values.count == 1 && node->values.data[0].type == UFBX_DOM_VALUE_ARRAY_F64) {
ufbx_dom_value value = node->values.data[0];
list.data = (double*)value.value_blob.data;
list.count = value.value_blob.size / sizeof(double);
}
return list;
}
ufbx_abi ufbx_real_list ufbx_dom_as_real_list(const ufbx_dom_node *node) {
ufbx_real_list list = { NULL, 0 };
if (node && node->values.count == 1 && node->values.data[0].type == (sizeof(ufbx_real) == sizeof(double) ? UFBX_DOM_VALUE_ARRAY_F64 : UFBX_DOM_VALUE_ARRAY_F32)) {
ufbx_dom_value value = node->values.data[0];
list.data = (ufbx_real*)value.value_blob.data;
list.count = value.value_blob.size / sizeof(ufbx_real);
}
return list;
}
ufbx_abi ufbx_blob_list ufbx_dom_as_blob_list(const ufbx_dom_node *node) {
ufbx_blob_list list = { NULL, 0 };
if (node && node->values.count == 1 && node->values.data[0].type == UFBX_DOM_VALUE_ARRAY_BLOB) {
ufbx_dom_value value = node->values.data[0];
list.data = (ufbx_blob*)value.value_blob.data;
list.count = value.value_blob.size / sizeof(ufbx_blob);
}
return list;
}
// -- String API
ufbx_abi ufbx_prop *ufbx_find_prop(const ufbx_props *props, const char *name) { return ufbx_find_prop_len(props, name, strlen(name)); }

26
extern/ufbx/ufbx.h vendored
View File

@@ -267,7 +267,7 @@ struct ufbx_converter { };
// `ufbx_source_version` contains the version of the corresponding source file.
// HINT: The version can be compared numerically to the result of `ufbx_pack_version()`,
// for example `#if UFBX_VERSION >= ufbx_pack_version(0, 12, 0)`.
#define UFBX_HEADER_VERSION ufbx_pack_version(0, 18, 1)
#define UFBX_HEADER_VERSION ufbx_pack_version(0, 19, 0)
#define UFBX_VERSION UFBX_HEADER_VERSION
// -- Basic types
@@ -400,12 +400,12 @@ UFBX_LIST_TYPE(ufbx_string_list, ufbx_string);
typedef enum ufbx_dom_value_type UFBX_ENUM_REPR {
UFBX_DOM_VALUE_NUMBER,
UFBX_DOM_VALUE_STRING,
UFBX_DOM_VALUE_ARRAY_I8,
UFBX_DOM_VALUE_BLOB,
UFBX_DOM_VALUE_ARRAY_I32,
UFBX_DOM_VALUE_ARRAY_I64,
UFBX_DOM_VALUE_ARRAY_F32,
UFBX_DOM_VALUE_ARRAY_F64,
UFBX_DOM_VALUE_ARRAY_RAW_STRING,
UFBX_DOM_VALUE_ARRAY_BLOB,
UFBX_DOM_VALUE_ARRAY_IGNORED,
UFBX_ENUM_FORCE_WIDTH(UFBX_DOM_VALUE_TYPE)
@@ -415,6 +415,12 @@ UFBX_ENUM_TYPE(ufbx_dom_value_type, UFBX_DOM_VALUE_TYPE, UFBX_DOM_VALUE_ARRAY_IG
typedef struct ufbx_dom_node ufbx_dom_node;
UFBX_LIST_TYPE(ufbx_int32_list, int32_t);
UFBX_LIST_TYPE(ufbx_int64_list, int64_t);
UFBX_LIST_TYPE(ufbx_float_list, float);
UFBX_LIST_TYPE(ufbx_double_list, double);
UFBX_LIST_TYPE(ufbx_blob_list, ufbx_blob);
typedef struct ufbx_dom_value {
ufbx_dom_value_type type;
ufbx_string value_str;
@@ -2097,6 +2103,10 @@ struct ufbx_blend_shape {
ufbx_uint32_list offset_vertices; // < Indices to `ufbx_mesh.vertices[]`
ufbx_vec3_list position_offsets; // < Always specified per-vertex offsets
ufbx_vec3_list normal_offsets; // < Empty if not specified
// Optional weights for the offsets.
// NOTE: These are technically not supported in FBX and are only written by Blender.
ufbx_real_list offset_weights;
};
typedef enum ufbx_cache_file_format UFBX_ENUM_REPR {
@@ -5778,6 +5788,16 @@ ufbx_abi ufbx_audio_clip *ufbx_as_audio_clip(const ufbx_element *element);
ufbx_abi ufbx_pose *ufbx_as_pose(const ufbx_element *element);
ufbx_abi ufbx_metadata_object *ufbx_as_metadata_object(const ufbx_element *element);
// Functions for interfacing with DOM lists
ufbx_abi bool ufbx_dom_is_array(const ufbx_dom_node *node);
ufbx_abi size_t ufbx_dom_array_size(const ufbx_dom_node *node);
ufbx_abi ufbx_int32_list ufbx_dom_as_int32_list(const ufbx_dom_node *node);
ufbx_abi ufbx_int64_list ufbx_dom_as_int64_list(const ufbx_dom_node *node);
ufbx_abi ufbx_float_list ufbx_dom_as_float_list(const ufbx_dom_node *node);
ufbx_abi ufbx_double_list ufbx_dom_as_double_list(const ufbx_dom_node *node);
ufbx_abi ufbx_real_list ufbx_dom_as_real_list(const ufbx_dom_node *node);
ufbx_abi ufbx_blob_list ufbx_dom_as_blob_list(const ufbx_dom_node *node);
#ifdef __cplusplus
}
#endif

69
source/blender/io/fbx/importer/fbx_import_mesh.cc
View File

@@ -7,6 +7,7 @@
*/
#include "BKE_attribute.hh"
#include "BKE_deform.hh"
#include "BKE_key.hh"
#include "BKE_lib_id.hh"
#include "BKE_material.hh"
@@ -338,13 +339,75 @@ static bool import_blend_shapes(Main &bmain,
const ufbx_vec3 &delta = fchan->target_shape->position_offsets[i];
kb_data[idx] += float3(delta.x, delta.y, delta.z);
}
mapping.el_to_shape_key.add(&fchan->element, mesh_key);
}
}
return mesh_key != nullptr;
}
/* Handle Blender-specific "FullWeights" that for each blend shape also create
* a weighted vertex group for itself. */
static void import_blend_shape_full_weights(const FbxElementMapping &mapping,
const ufbx_mesh *fmesh,
Mesh *mesh,
Object *obj)
{
for (const ufbx_blend_deformer *fdeformer : fmesh->blend_deformers) {
for (const ufbx_blend_channel *fchan : fdeformer->channels) {
Key *key = mapping.el_to_shape_key.lookup_default(&fchan->element, nullptr);
if (fchan->target_shape == nullptr || key == nullptr) {
continue;
}
if (fchan->target_shape->offset_weights.count != fchan->target_shape->num_offsets) {
continue;
}
KeyBlock *kb = BKE_keyblock_find_name(key, fchan->target_shape->name.data);
if (kb == nullptr) {
continue;
}
/* Ignore cases where all weights are 1.0 (group has no effect),
* and cases where any weights are outside of 0..1 range (apparently some files have
* invalid negative weights and should be ignored). */
bool all_one = true;
bool all_unorm = true;
for (ufbx_real w : fchan->target_shape->offset_weights) {
if (w != 1.0) {
all_one = false;
}
if (w < 0.0 || w > 1.0) {
all_unorm = false;
}
}
if (all_one || !all_unorm) {
continue;
}
int group_index = BKE_defgroup_name_index(&mesh->vertex_group_names, kb->name);
if (group_index < 0) {
BKE_object_defgroup_add_name(obj, kb->name);
group_index = BKE_defgroup_name_index(&mesh->vertex_group_names, kb->name);
if (group_index < 0) {
continue;
}
}
MutableSpan<MDeformVert> dverts = mesh->deform_verts_for_write();
for (int i = 0; i < fchan->target_shape->num_offsets; i++) {
const int idx = fchan->target_shape->offset_vertices[i];
if (idx >= 0 && idx < dverts.size()) {
const float w = fchan->target_shape->offset_weights[i];
MDeformWeight *dw = BKE_defvert_ensure_index(&dverts[idx], group_index);
dw->weight = w;
}
}
STRNCPY(kb->vgroup, kb->name);
}
}
}
void import_meshes(Main &bmain,
const ufbx_scene &fbx,
FbxElementMapping &mapping,
@@ -491,6 +554,10 @@ void import_meshes(Main &bmain,
}
}
if (any_shapes) {
import_blend_shape_full_weights(mapping, fmesh, mesh, obj);
}
/* Assign materials. */
if (fmesh->materials.count > 0 && node->materials.count == fmesh->materials.count) {
int mat_index = 0;

144
tests/files/io_tests/fbx/reference/ufbx_blender440_shape_weight_anim_74b.txt Normal file
View File

@@ -0,0 +1,144 @@
==== Meshes: 1
- Mesh 'Cube.001' vtx:8 face:6 loop:24 edge:12
- 0 1 3 2 2 ... 0 7 3 1 5
- 0/1 1/3 2/3 0/2 3/7 ... 5/7 4/5 4/6 1/5 0/4
- attr 'position' FLOAT_VECTOR POINT
- (-1.000, -1.000, -1.000)
- (-1.000, -1.000, 1.000)
- (-1.000, 1.000, -1.000)
...
- (1.000, -1.000, 1.000)
- (1.000, 1.000, -1.000)
- (1.000, 1.000, 1.000)
- attr 'sharp_edge' BOOLEAN EDGE
- 1 1 1 1 1 ... 1 1 1 1 1
- attr 'custom_normal' INT16_2D CORNER
- (0, 0)
- (0, 0)
- (0, 0)
...
- (0, 0)
- (0, 0)
- (0, 0)
- attr 'UVMap' FLOAT2 CORNER
- (0.375, 0.000)
- (0.625, 0.000)
- (0.625, 0.250)
...
- (0.875, 0.500)
- (0.875, 0.750)
- (0.625, 0.750)
- vertex groups:
-
- 0=0.000
-
- 0=1.000
- 1=0.500
- shape key 'Basis' w:0.000 vgrp:'' 0:(-1.000, -1.000, -1.000) 1:(-1.000, -1.000, 1.000) 2:(-1.000, 1.000, -1.000)
- shape key 'Key' w:0.000 vgrp:'Key' 0:(-1.000, -1.000, -1.000) 1:(-1.000, -1.000, 3.000) 2:(-1.000, 1.000, -1.000)
- shape key 'Side' w:0.000 vgrp:'Side' 0:(-1.000, -1.000, -1.000) 1:(-1.000, -1.000, 1.000) 2:(-1.000, 1.000, -1.000)
==== Objects: 1
- Obj 'Cube' MESH data:'Cube.001'
- pos 0.000, 0.000, 0.000
- rot 0.000, 0.000, 0.000 (XYZ)
- scl 1.000, 1.000, 1.000
- 2 vertex groups
- 'Key' 'Side'
- anim act:Cube|Action slot:OBCube blend:REPLACE drivers:0
==== Actions: 1
- Action 'Cube|Action' curverange:(1.0 .. 30.0) layers:1
- ActionLayer Layer strips:1
- Keyframe strip channelbags:2
- Channelbag slot 'KEKey' curves:2
- fcu 'key_blocks["Key"].value[0]' smooth:CONT_ACCEL extra:CONSTANT keyframes:30
- (1.000, 0.000) lh:(0.667, 0.000 AUTO_CLAMPED) rh:(1.333, 0.000 AUTO_CLAMPED)
- (2.000, 0.000) lh:(1.667, 0.000 AUTO_CLAMPED) rh:(2.333, 0.000 AUTO_CLAMPED)
- (3.000, 0.000) lh:(2.667, 0.000 AUTO_CLAMPED) rh:(3.333, 0.000 AUTO_CLAMPED)
...
- (28.000, 1.000) lh:(27.667, 1.000 AUTO_CLAMPED) rh:(28.333, 1.000 AUTO_CLAMPED)
- (29.000, 1.000) lh:(28.667, 1.000 AUTO_CLAMPED) rh:(29.333, 1.000 AUTO_CLAMPED)
- (30.000, 1.000) lh:(29.667, 1.000 AUTO_CLAMPED) rh:(30.333, 1.000 AUTO_CLAMPED)
- fcu 'key_blocks["Side"].value[0]' smooth:CONT_ACCEL extra:CONSTANT keyframes:30
- (1.000, 0.000) lh:(0.667, 0.000 AUTO_CLAMPED) rh:(1.333, 0.000 AUTO_CLAMPED)
- (2.000, 0.056) lh:(1.667, 0.032 AUTO_CLAMPED) rh:(2.333, 0.079 AUTO_CLAMPED)
- (3.000, 0.111) lh:(2.667, 0.094 AUTO_CLAMPED) rh:(3.333, 0.128 AUTO_CLAMPED)
...
- (28.000, 0.950) lh:(27.667, 0.942 AUTO_CLAMPED) rh:(28.333, 0.958 AUTO_CLAMPED)
- (29.000, 0.975) lh:(28.667, 0.964 AUTO_CLAMPED) rh:(29.333, 0.986 AUTO_CLAMPED)
- (30.000, 1.000) lh:(29.667, 1.000 AUTO_CLAMPED) rh:(30.333, 1.000 AUTO_CLAMPED)
- Channelbag slot 'OBCube' curves:9
- fcu 'location[0]' smooth:CONT_ACCEL extra:CONSTANT keyframes:30 grp:'Cube'
- (1.000, 0.000) lh:(0.667, 0.000 AUTO_CLAMPED) rh:(1.333, 0.000 AUTO_CLAMPED)
- (2.000, 0.000) lh:(1.667, 0.000 AUTO_CLAMPED) rh:(2.333, 0.000 AUTO_CLAMPED)
- (3.000, 0.000) lh:(2.667, 0.000 AUTO_CLAMPED) rh:(3.333, 0.000 AUTO_CLAMPED)
...
- (28.000, 0.000) lh:(27.667, 0.000 AUTO_CLAMPED) rh:(28.333, 0.000 AUTO_CLAMPED)
- (29.000, 0.000) lh:(28.667, 0.000 AUTO_CLAMPED) rh:(29.333, 0.000 AUTO_CLAMPED)
- (30.000, 0.000) lh:(29.667, 0.000 AUTO_CLAMPED) rh:(30.333, 0.000 AUTO_CLAMPED)
- fcu 'location[1]' smooth:CONT_ACCEL extra:CONSTANT keyframes:30 grp:'Cube'
- (1.000, 0.000) lh:(0.667, 0.000 AUTO_CLAMPED) rh:(1.333, 0.000 AUTO_CLAMPED)
- (2.000, 0.000) lh:(1.667, 0.000 AUTO_CLAMPED) rh:(2.333, 0.000 AUTO_CLAMPED)
- (3.000, 0.000) lh:(2.667, 0.000 AUTO_CLAMPED) rh:(3.333, 0.000 AUTO_CLAMPED)
...
- (28.000, 0.000) lh:(27.667, 0.000 AUTO_CLAMPED) rh:(28.333, 0.000 AUTO_CLAMPED)
- (29.000, 0.000) lh:(28.667, 0.000 AUTO_CLAMPED) rh:(29.333, 0.000 AUTO_CLAMPED)
- (30.000, 0.000) lh:(29.667, 0.000 AUTO_CLAMPED) rh:(30.333, 0.000 AUTO_CLAMPED)
- fcu 'location[2]' smooth:CONT_ACCEL extra:CONSTANT keyframes:30 grp:'Cube'
- (1.000, 0.000) lh:(0.667, 0.000 AUTO_CLAMPED) rh:(1.333, 0.000 AUTO_CLAMPED)
- (2.000, 0.000) lh:(1.667, 0.000 AUTO_CLAMPED) rh:(2.333, 0.000 AUTO_CLAMPED)
- (3.000, 0.000) lh:(2.667, 0.000 AUTO_CLAMPED) rh:(3.333, 0.000 AUTO_CLAMPED)
...
- (28.000, 0.000) lh:(27.667, 0.000 AUTO_CLAMPED) rh:(28.333, 0.000 AUTO_CLAMPED)
- (29.000, 0.000) lh:(28.667, 0.000 AUTO_CLAMPED) rh:(29.333, 0.000 AUTO_CLAMPED)
- (30.000, 0.000) lh:(29.667, 0.000 AUTO_CLAMPED) rh:(30.333, 0.000 AUTO_CLAMPED)
- fcu 'rotation_euler[0]' smooth:CONT_ACCEL extra:CONSTANT keyframes:30 grp:'Cube'
- (1.000, 0.000) lh:(0.667, 0.000 AUTO_CLAMPED) rh:(1.333, 0.000 AUTO_CLAMPED)
- (2.000, 0.000) lh:(1.667, 0.000 AUTO_CLAMPED) rh:(2.333, 0.000 AUTO_CLAMPED)
- (3.000, 0.000) lh:(2.667, 0.000 AUTO_CLAMPED) rh:(3.333, 0.000 AUTO_CLAMPED)
...
- (28.000, 0.000) lh:(27.667, 0.000 AUTO_CLAMPED) rh:(28.333, 0.000 AUTO_CLAMPED)
- (29.000, 0.000) lh:(28.667, 0.000 AUTO_CLAMPED) rh:(29.333, 0.000 AUTO_CLAMPED)
- (30.000, 0.000) lh:(29.667, 0.000 AUTO_CLAMPED) rh:(30.333, 0.000 AUTO_CLAMPED)
- fcu 'rotation_euler[1]' smooth:CONT_ACCEL extra:CONSTANT keyframes:30 grp:'Cube'
- (1.000, 0.000) lh:(0.667, 0.000 AUTO_CLAMPED) rh:(1.333, 0.000 AUTO_CLAMPED)
- (2.000, 0.000) lh:(1.667, 0.000 AUTO_CLAMPED) rh:(2.333, 0.000 AUTO_CLAMPED)
- (3.000, 0.000) lh:(2.667, 0.000 AUTO_CLAMPED) rh:(3.333, 0.000 AUTO_CLAMPED)
...
- (28.000, 0.000) lh:(27.667, 0.000 AUTO_CLAMPED) rh:(28.333, 0.000 AUTO_CLAMPED)
- (29.000, 0.000) lh:(28.667, 0.000 AUTO_CLAMPED) rh:(29.333, 0.000 AUTO_CLAMPED)
- (30.000, 0.000) lh:(29.667, 0.000 AUTO_CLAMPED) rh:(30.333, 0.000 AUTO_CLAMPED)
- fcu 'rotation_euler[2]' smooth:CONT_ACCEL extra:CONSTANT keyframes:30 grp:'Cube'
- (1.000, 0.000) lh:(0.667, 0.000 AUTO_CLAMPED) rh:(1.333, 0.000 AUTO_CLAMPED)
- (2.000, 0.000) lh:(1.667, 0.000 AUTO_CLAMPED) rh:(2.333, 0.000 AUTO_CLAMPED)
- (3.000, 0.000) lh:(2.667, 0.000 AUTO_CLAMPED) rh:(3.333, 0.000 AUTO_CLAMPED)
...
- (28.000, 0.000) lh:(27.667, 0.000 AUTO_CLAMPED) rh:(28.333, 0.000 AUTO_CLAMPED)
- (29.000, 0.000) lh:(28.667, 0.000 AUTO_CLAMPED) rh:(29.333, 0.000 AUTO_CLAMPED)
- (30.000, 0.000) lh:(29.667, 0.000 AUTO_CLAMPED) rh:(30.333, 0.000 AUTO_CLAMPED)
- fcu 'scale[0]' smooth:CONT_ACCEL extra:CONSTANT keyframes:30 grp:'Cube'
- (1.000, 1.000) lh:(0.667, 1.000 AUTO_CLAMPED) rh:(1.333, 1.000 AUTO_CLAMPED)
- (2.000, 1.000) lh:(1.667, 1.000 AUTO_CLAMPED) rh:(2.333, 1.000 AUTO_CLAMPED)
- (3.000, 1.000) lh:(2.667, 1.000 AUTO_CLAMPED) rh:(3.333, 1.000 AUTO_CLAMPED)
...
- (28.000, 1.000) lh:(27.667, 1.000 AUTO_CLAMPED) rh:(28.333, 1.000 AUTO_CLAMPED)
- (29.000, 1.000) lh:(28.667, 1.000 AUTO_CLAMPED) rh:(29.333, 1.000 AUTO_CLAMPED)
- (30.000, 1.000) lh:(29.667, 1.000 AUTO_CLAMPED) rh:(30.333, 1.000 AUTO_CLAMPED)
- fcu 'scale[1]' smooth:CONT_ACCEL extra:CONSTANT keyframes:30 grp:'Cube'
- (1.000, 1.000) lh:(0.667, 1.000 AUTO_CLAMPED) rh:(1.333, 1.000 AUTO_CLAMPED)
- (2.000, 1.000) lh:(1.667, 1.000 AUTO_CLAMPED) rh:(2.333, 1.000 AUTO_CLAMPED)
- (3.000, 1.000) lh:(2.667, 1.000 AUTO_CLAMPED) rh:(3.333, 1.000 AUTO_CLAMPED)
...
- (28.000, 1.000) lh:(27.667, 1.000 AUTO_CLAMPED) rh:(28.333, 1.000 AUTO_CLAMPED)
- (29.000, 1.000) lh:(28.667, 1.000 AUTO_CLAMPED) rh:(29.333, 1.000 AUTO_CLAMPED)
- (30.000, 1.000) lh:(29.667, 1.000 AUTO_CLAMPED) rh:(30.333, 1.000 AUTO_CLAMPED)
- fcu 'scale[2]' smooth:CONT_ACCEL extra:CONSTANT keyframes:30 grp:'Cube'
- (1.000, 1.000) lh:(0.667, 1.000 AUTO_CLAMPED) rh:(1.333, 1.000 AUTO_CLAMPED)
- (2.000, 1.000) lh:(1.667, 1.000 AUTO_CLAMPED) rh:(2.333, 1.000 AUTO_CLAMPED)
- (3.000, 1.000) lh:(2.667, 1.000 AUTO_CLAMPED) rh:(3.333, 1.000 AUTO_CLAMPED)
...
- (28.000, 1.000) lh:(27.667, 1.000 AUTO_CLAMPED) rh:(28.333, 1.000 AUTO_CLAMPED)
- (29.000, 1.000) lh:(28.667, 1.000 AUTO_CLAMPED) rh:(29.333, 1.000 AUTO_CLAMPED)
- (30.000, 1.000) lh:(29.667, 1.000 AUTO_CLAMPED) rh:(30.333, 1.000 AUTO_CLAMPED)

77
tests/files/io_tests/fbx/reference/ufbx_blender_279_shape_weights_74b.txt Normal file
View File

@@ -0,0 +1,77 @@
==== Meshes: 1
- Mesh 'Cube.001' vtx:8 face:6 loop:24 edge:12
- 0 1 3 2 2 ... 0 7 3 1 5
- 0/1 1/3 2/3 0/2 3/7 ... 5/7 4/5 4/6 1/5 0/4
- attr 'position' FLOAT_VECTOR POINT
- (-1.000, -1.000, -1.000)
- (-1.000, -1.000, 1.000)
- (-1.000, 1.000, -1.000)
...
- (1.000, -1.000, 1.000)
- (1.000, 1.000, -1.000)
- (1.000, 1.000, 1.000)
- attr 'sharp_edge' BOOLEAN EDGE
- 1 1 1 1 1 ... 1 1 1 1 1
- attr 'custom_normal' INT16_2D CORNER
- (0, 0)
- (0, 0)
- (0, 0)
...
- (0, 0)
- (0, 0)
- (0, 0)
- vertex groups:
-
- 0=0.000
-
- 0=1.000
-
- shape key 'Basis' w:0.000 vgrp:'' 0:(-1.000, -1.000, -1.000) 1:(-1.000, -1.000, 1.000) 2:(-1.000, 1.000, -1.000)
- shape key 'Key' w:1.000 vgrp:'Key' 0:(-1.000, -1.000, -1.000) 1:(-1.000, -1.000, 3.000) 2:(-1.000, 1.000, -1.000)
==== Objects: 1
- Obj 'Cube' MESH data:'Cube.001'
- pos 0.000, 0.000, 0.000
- rot 0.000, 0.000, 0.000 (XYZ)
- scl 1.000, 1.000, 1.000
- 1 vertex groups
- 'Key'
- anim act:Cube|Action slot:OBCube blend:REPLACE drivers:0
==== Actions: 1
- Action 'Cube|Action' curverange:(1.0 .. 2.0) layers:1
- ActionLayer Layer strips:1
- Keyframe strip channelbags:2
- Channelbag slot 'KEKey' curves:1
- fcu 'key_blocks["Key"].value[0]' smooth:CONT_ACCEL extra:CONSTANT keyframes:2
- (1.000, 0.000) lh:(0.667, 0.000 AUTO_CLAMPED) rh:(1.333, 0.000 AUTO_CLAMPED)
- (2.000, 0.000) lh:(1.667, 0.000 AUTO_CLAMPED) rh:(2.333, 0.000 AUTO_CLAMPED)
- Channelbag slot 'OBCube' curves:9
- fcu 'location[0]' smooth:CONT_ACCEL extra:CONSTANT keyframes:2 grp:'Cube'
- (1.000, 0.000) lh:(0.667, 0.000 AUTO_CLAMPED) rh:(1.333, 0.000 AUTO_CLAMPED)
- (2.000, 0.000) lh:(1.667, 0.000 AUTO_CLAMPED) rh:(2.333, 0.000 AUTO_CLAMPED)
- fcu 'location[1]' smooth:CONT_ACCEL extra:CONSTANT keyframes:2 grp:'Cube'
- (1.000, 0.000) lh:(0.667, 0.000 AUTO_CLAMPED) rh:(1.333, 0.000 AUTO_CLAMPED)
- (2.000, 0.000) lh:(1.667, 0.000 AUTO_CLAMPED) rh:(2.333, 0.000 AUTO_CLAMPED)
- fcu 'location[2]' smooth:CONT_ACCEL extra:CONSTANT keyframes:2 grp:'Cube'
- (1.000, 0.000) lh:(0.667, 0.000 AUTO_CLAMPED) rh:(1.333, 0.000 AUTO_CLAMPED)
- (2.000, 0.000) lh:(1.667, 0.000 AUTO_CLAMPED) rh:(2.333, 0.000 AUTO_CLAMPED)
- fcu 'rotation_euler[0]' smooth:CONT_ACCEL extra:CONSTANT keyframes:2 grp:'Cube'
- (1.000, 0.000) lh:(0.667, 0.000 AUTO_CLAMPED) rh:(1.333, 0.000 AUTO_CLAMPED)
- (2.000, 0.000) lh:(1.667, 0.000 AUTO_CLAMPED) rh:(2.333, 0.000 AUTO_CLAMPED)
- fcu 'rotation_euler[1]' smooth:CONT_ACCEL extra:CONSTANT keyframes:2 grp:'Cube'
- (1.000, 0.000) lh:(0.667, 0.000 AUTO_CLAMPED) rh:(1.333, 0.000 AUTO_CLAMPED)
- (2.000, 0.000) lh:(1.667, 0.000 AUTO_CLAMPED) rh:(2.333, 0.000 AUTO_CLAMPED)
- fcu 'rotation_euler[2]' smooth:CONT_ACCEL extra:CONSTANT keyframes:2 grp:'Cube'
- (1.000, 0.000) lh:(0.667, 0.000 AUTO_CLAMPED) rh:(1.333, 0.000 AUTO_CLAMPED)
- (2.000, 0.000) lh:(1.667, 0.000 AUTO_CLAMPED) rh:(2.333, 0.000 AUTO_CLAMPED)
- fcu 'scale[0]' smooth:CONT_ACCEL extra:CONSTANT keyframes:2 grp:'Cube'
- (1.000, 1.000) lh:(0.667, 1.000 AUTO_CLAMPED) rh:(1.333, 1.000 AUTO_CLAMPED)
- (2.000, 1.000) lh:(1.667, 1.000 AUTO_CLAMPED) rh:(2.333, 1.000 AUTO_CLAMPED)
- fcu 'scale[1]' smooth:CONT_ACCEL extra:CONSTANT keyframes:2 grp:'Cube'
- (1.000, 1.000) lh:(0.667, 1.000 AUTO_CLAMPED) rh:(1.333, 1.000 AUTO_CLAMPED)
- (2.000, 1.000) lh:(1.667, 1.000 AUTO_CLAMPED) rh:(2.333, 1.000 AUTO_CLAMPED)
- fcu 'scale[2]' smooth:CONT_ACCEL extra:CONSTANT keyframes:2 grp:'Cube'
- (1.000, 1.000) lh:(0.667, 1.000 AUTO_CLAMPED) rh:(1.333, 1.000 AUTO_CLAMPED)
- (2.000, 1.000) lh:(1.667, 1.000 AUTO_CLAMPED) rh:(2.333, 1.000 AUTO_CLAMPED)

BIN
tests/files/io_tests/fbx/ufbx_blender440_shape_weight_anim_74b.fbx (Stored with Git LFS) Normal file
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tests/files/io_tests/fbx/ufbx_blender_279_shape_weights_74b.fbx (Stored with Git LFS) Normal file
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