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
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
|
/* SPDX-License-Identifier: GPL-2.0-or-later
* Copyright 2005 Blender Foundation. All rights reserved. */
/** \file
* \ingroup shdnodes
*/
#include "node_shader_util.hh"
#include "NOD_math_functions.hh"
#include "NOD_socket_search_link.hh"
#include "RNA_enum_types.h"
/* **************** SCALAR MATH ******************** */
namespace blender::nodes::node_shader_math_cc {
static void sh_node_math_declare(NodeDeclarationBuilder &b)
{
b.is_function_node();
b.add_input<decl::Float>(N_("Value")).default_value(0.5f).min(-10000.0f).max(10000.0f);
b.add_input<decl::Float>(N_("Value"), "Value_001")
.default_value(0.5f)
.min(-10000.0f)
.max(10000.0f);
b.add_input<decl::Float>(N_("Value"), "Value_002")
.default_value(0.5f)
.min(-10000.0f)
.max(10000.0f);
b.add_output<decl::Float>(N_("Value"));
}
class SocketSearchOp {
public:
std::string socket_name;
NodeMathOperation mode = NODE_MATH_ADD;
void operator()(LinkSearchOpParams ¶ms)
{
bNode &node = params.add_node("ShaderNodeMath");
node.custom1 = mode;
params.update_and_connect_available_socket(node, socket_name);
}
};
static void sh_node_math_gather_link_searches(GatherLinkSearchOpParams ¶ms)
{
if (!params.node_tree().typeinfo->validate_link(
static_cast<eNodeSocketDatatype>(params.other_socket().type), SOCK_FLOAT)) {
return;
}
const bool is_geometry_node_tree = params.node_tree().type == NTREE_GEOMETRY;
const int weight = ELEM(params.other_socket().type, SOCK_FLOAT, SOCK_BOOLEAN, SOCK_INT) ? 0 : -1;
for (const EnumPropertyItem *item = rna_enum_node_math_items; item->identifier != nullptr;
item++) {
if (item->name != nullptr && item->identifier[0] != '\0') {
const int gn_weight =
(is_geometry_node_tree &&
ELEM(item->value, NODE_MATH_COMPARE, NODE_MATH_GREATER_THAN, NODE_MATH_LESS_THAN)) ?
-1 :
weight;
params.add_item(CTX_IFACE_(BLT_I18NCONTEXT_ID_NODETREE, item->name),
SocketSearchOp{"Value", (NodeMathOperation)item->value},
gn_weight);
}
}
}
static const char *gpu_shader_get_name(int mode)
{
const FloatMathOperationInfo *info = get_float_math_operation_info(mode);
if (!info) {
return nullptr;
}
if (info->shader_name.is_empty()) {
return nullptr;
}
return info->shader_name.c_str();
}
static int gpu_shader_math(GPUMaterial *mat,
bNode *node,
bNodeExecData * /*execdata*/,
GPUNodeStack *in,
GPUNodeStack *out)
{
const char *name = gpu_shader_get_name(node->custom1);
if (name != nullptr) {
int ret = GPU_stack_link(mat, node, name, in, out);
if (ret && node->custom2 & SHD_MATH_CLAMP) {
float min[3] = {0.0f, 0.0f, 0.0f};
float max[3] = {1.0f, 1.0f, 1.0f};
GPU_link(
mat, "clamp_value", out[0].link, GPU_constant(min), GPU_constant(max), &out[0].link);
}
return ret;
}
return 0;
}
static const fn::MultiFunction *get_base_multi_function(const bNode &node)
{
const int mode = node.custom1;
const fn::MultiFunction *base_fn = nullptr;
try_dispatch_float_math_fl_to_fl(
mode, [&](auto devi_fn, auto function, const FloatMathOperationInfo &info) {
static fn::CustomMF_SI_SO<float, float> fn{
info.title_case_name.c_str(), function, devi_fn};
base_fn = &fn;
});
if (base_fn != nullptr) {
return base_fn;
}
try_dispatch_float_math_fl_fl_to_fl(
mode, [&](auto devi_fn, auto function, const FloatMathOperationInfo &info) {
static fn::CustomMF_SI_SI_SO<float, float, float> fn{
info.title_case_name.c_str(), function, devi_fn};
base_fn = &fn;
});
if (base_fn != nullptr) {
return base_fn;
}
try_dispatch_float_math_fl_fl_fl_to_fl(
mode, [&](auto devi_fn, auto function, const FloatMathOperationInfo &info) {
static fn::CustomMF_SI_SI_SI_SO<float, float, float, float> fn{
info.title_case_name.c_str(), function, devi_fn};
base_fn = &fn;
});
if (base_fn != nullptr) {
return base_fn;
}
return nullptr;
}
class ClampWrapperFunction : public fn::MultiFunction {
private:
const fn::MultiFunction &fn_;
public:
ClampWrapperFunction(const fn::MultiFunction &fn) : fn_(fn)
{
this->set_signature(&fn.signature());
}
void call(IndexMask mask, fn::MFParams params, fn::MFContext context) const override
{
fn_.call(mask, params, context);
/* Assumes the output parameter is the last one. */
const int output_param_index = this->param_amount() - 1;
/* This has actually been initialized in the call above. */
MutableSpan<float> results = params.uninitialized_single_output<float>(output_param_index);
for (const int i : mask) {
float &value = results[i];
CLAMP(value, 0.0f, 1.0f);
}
}
};
static void sh_node_math_build_multi_function(NodeMultiFunctionBuilder &builder)
{
const fn::MultiFunction *base_function = get_base_multi_function(builder.node());
const bool clamp_output = builder.node().custom2 != 0;
if (clamp_output) {
builder.construct_and_set_matching_fn<ClampWrapperFunction>(*base_function);
}
else {
builder.set_matching_fn(base_function);
}
}
} // namespace blender::nodes::node_shader_math_cc
void register_node_type_sh_math()
{
namespace file_ns = blender::nodes::node_shader_math_cc;
static bNodeType ntype;
sh_fn_node_type_base(&ntype, SH_NODE_MATH, "Math", NODE_CLASS_CONVERTER);
ntype.declare = file_ns::sh_node_math_declare;
ntype.labelfunc = node_math_label;
node_type_gpu(&ntype, file_ns::gpu_shader_math);
node_type_update(&ntype, node_math_update);
ntype.build_multi_function = file_ns::sh_node_math_build_multi_function;
ntype.gather_link_search_ops = file_ns::sh_node_math_gather_link_searches;
nodeRegisterType(&ntype);
}
|
