1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
|
/*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software Foundation,
* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
#include "BLI_compiler_attrs.h"
#include "BLI_task.hh"
#include "DNA_texture_types.h"
#include "BKE_texture.h"
#include "RE_texture.h"
#include "UI_interface.h"
#include "UI_resources.h"
#include "node_geometry_util.hh"
namespace blender::nodes::node_geo_legacy_attribute_sample_texture_cc {
static void node_declare(NodeDeclarationBuilder &b)
{
b.add_input<decl::Geometry>(N_("Geometry"));
b.add_input<decl::Texture>(N_("Texture")).hide_label();
b.add_input<decl::String>(N_("Mapping"));
b.add_input<decl::String>(N_("Result"));
b.add_output<decl::Geometry>(N_("Geometry"));
}
static AttributeDomain get_result_domain(const GeometryComponent &component,
const StringRef result_name,
const StringRef map_name)
{
/* Use the domain of the result attribute if it already exists. */
std::optional<AttributeMetaData> result_info = component.attribute_get_meta_data(result_name);
if (result_info) {
return result_info->domain;
}
/* Otherwise use the name of the map attribute. */
std::optional<AttributeMetaData> map_info = component.attribute_get_meta_data(map_name);
if (map_info) {
return map_info->domain;
}
/* The node won't execute in this case, but we still have to return a value. */
return ATTR_DOMAIN_POINT;
}
static void execute_on_component(GeometryComponent &component, const GeoNodeExecParams ¶ms)
{
Tex *texture = params.get_input<Tex *>("Texture");
if (texture == nullptr) {
return;
}
const std::string result_attribute_name = params.get_input<std::string>("Result");
const std::string mapping_name = params.get_input<std::string>("Mapping");
if (!component.attribute_exists(mapping_name)) {
return;
}
const AttributeDomain result_domain = get_result_domain(
component, result_attribute_name, mapping_name);
OutputAttribute_Typed<ColorGeometry4f> attribute_out =
component.attribute_try_get_for_output_only<ColorGeometry4f>(result_attribute_name,
result_domain);
if (!attribute_out) {
return;
}
VArray<float3> mapping_attribute = component.attribute_get_for_read<float3>(
mapping_name, result_domain, {0, 0, 0});
MutableSpan<ColorGeometry4f> colors = attribute_out.as_span();
threading::parallel_for(IndexRange(mapping_attribute.size()), 128, [&](IndexRange range) {
for (const int i : range) {
TexResult texture_result = {0};
const float3 position = mapping_attribute[i];
/* For legacy reasons we have to map [0, 1] to [-1, 1] to support uv mappings. */
const float3 remapped_position = position * 2.0f - float3(1.0f);
BKE_texture_get_value(nullptr, texture, remapped_position, &texture_result, false);
colors[i] = {texture_result.tr, texture_result.tg, texture_result.tb, texture_result.ta};
}
});
attribute_out.save();
}
static void node_geo_exec(GeoNodeExecParams params)
{
GeometrySet geometry_set = params.extract_input<GeometrySet>("Geometry");
geometry_set = geometry::realize_instances_legacy(geometry_set);
if (geometry_set.has<MeshComponent>()) {
execute_on_component(geometry_set.get_component_for_write<MeshComponent>(), params);
}
if (geometry_set.has<PointCloudComponent>()) {
execute_on_component(geometry_set.get_component_for_write<PointCloudComponent>(), params);
}
if (geometry_set.has<CurveComponent>()) {
execute_on_component(geometry_set.get_component_for_write<CurveComponent>(), params);
}
params.set_output("Geometry", geometry_set);
}
} // namespace blender::nodes::node_geo_legacy_attribute_sample_texture_cc
void register_node_type_geo_sample_texture()
{
namespace file_ns = blender::nodes::node_geo_legacy_attribute_sample_texture_cc;
static bNodeType ntype;
geo_node_type_base(&ntype,
GEO_NODE_LEGACY_ATTRIBUTE_SAMPLE_TEXTURE,
"Attribute Sample Texture",
NODE_CLASS_ATTRIBUTE,
0);
node_type_size_preset(&ntype, NODE_SIZE_LARGE);
ntype.declare = file_ns::node_declare;
ntype.geometry_node_execute = file_ns::node_geo_exec;
nodeRegisterType(&ntype);
}
|
