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
|
/* SPDX-License-Identifier: GPL-2.0-or-later
* Copyright 2005 Blender Foundation. All rights reserved. */
#include "node_shader_util.hh"
#include "BKE_context.h"
#include "UI_interface.h"
#include "UI_resources.h"
namespace blender::nodes::node_shader_normal_map_cc {
static void node_declare(NodeDeclarationBuilder &b)
{
b.add_input<decl::Float>(N_("Strength")).default_value(1.0f).min(0.0f).max(10.0f);
b.add_input<decl::Color>(N_("Color")).default_value({0.5f, 0.5f, 1.0f, 1.0f});
b.add_output<decl::Vector>(N_("Normal"));
}
static void node_shader_buts_normal_map(uiLayout *layout, bContext *C, PointerRNA *ptr)
{
uiItemR(layout, ptr, "space", UI_ITEM_R_SPLIT_EMPTY_NAME, "", 0);
if (RNA_enum_get(ptr, "space") == SHD_SPACE_TANGENT) {
PointerRNA obptr = CTX_data_pointer_get(C, "active_object");
if (obptr.data && RNA_enum_get(&obptr, "type") == OB_MESH) {
PointerRNA dataptr = RNA_pointer_get(&obptr, "data");
uiItemPointerR(layout, ptr, "uv_map", &dataptr, "uv_layers", "", ICON_NONE);
}
else {
uiItemR(layout, ptr, "uv_map", UI_ITEM_R_SPLIT_EMPTY_NAME, "", 0);
}
}
}
static void node_shader_init_normal_map(bNodeTree *UNUSED(ntree), bNode *node)
{
NodeShaderNormalMap *attr = MEM_cnew<NodeShaderNormalMap>("NodeShaderNormalMap");
node->storage = attr;
}
static int gpu_shader_normal_map(GPUMaterial *mat,
bNode *node,
bNodeExecData *UNUSED(execdata),
GPUNodeStack *in,
GPUNodeStack *out)
{
NodeShaderNormalMap *nm = static_cast<NodeShaderNormalMap *>(node->storage);
GPUNodeLink *strength;
if (in[0].link) {
strength = in[0].link;
}
else if (node->original) {
bNodeSocket *socket = static_cast<bNodeSocket *>(BLI_findlink(&node->original->inputs, 0));
bNodeSocketValueFloat *socket_data = static_cast<bNodeSocketValueFloat *>(
socket->default_value);
strength = GPU_uniform(&socket_data->value);
}
else {
strength = GPU_constant(in[0].vec);
}
GPUNodeLink *newnormal;
if (in[1].link) {
newnormal = in[1].link;
}
else if (node->original) {
bNodeSocket *socket = static_cast<bNodeSocket *>(BLI_findlink(&node->original->inputs, 1));
bNodeSocketValueRGBA *socket_data = static_cast<bNodeSocketValueRGBA *>(socket->default_value);
newnormal = GPU_uniform(socket_data->value);
}
else {
newnormal = GPU_constant(in[1].vec);
}
const char *color_to_normal_fnc_name = "color_to_normal_new_shading";
if (ELEM(nm->space, SHD_SPACE_BLENDER_OBJECT, SHD_SPACE_BLENDER_WORLD)) {
color_to_normal_fnc_name = "color_to_blender_normal_new_shading";
}
GPU_link(mat, color_to_normal_fnc_name, newnormal, &newnormal);
switch (nm->space) {
case SHD_SPACE_TANGENT:
GPU_link(mat,
"node_normal_map",
GPU_builtin(GPU_OBJECT_INFO),
GPU_attribute(mat, CD_TANGENT, nm->uv_map),
GPU_builtin(GPU_WORLD_NORMAL),
newnormal,
&newnormal);
break;
case SHD_SPACE_OBJECT:
case SHD_SPACE_BLENDER_OBJECT:
GPU_link(
mat, "direction_transform_m4v3", newnormal, GPU_builtin(GPU_OBJECT_MATRIX), &newnormal);
break;
case SHD_SPACE_WORLD:
case SHD_SPACE_BLENDER_WORLD:
/* Nothing to do. */
break;
}
GPUNodeLink *oldnormal = GPU_builtin(GPU_WORLD_NORMAL);
GPU_link(mat, "node_normal_map_mix", strength, newnormal, oldnormal, &out[0].link);
return true;
}
} // namespace blender::nodes::node_shader_normal_map_cc
/* node type definition */
void register_node_type_sh_normal_map()
{
namespace file_ns = blender::nodes::node_shader_normal_map_cc;
static bNodeType ntype;
sh_node_type_base(&ntype, SH_NODE_NORMAL_MAP, "Normal Map", NODE_CLASS_OP_VECTOR);
ntype.declare = file_ns::node_declare;
ntype.draw_buttons = file_ns::node_shader_buts_normal_map;
node_type_size_preset(&ntype, NODE_SIZE_MIDDLE);
node_type_init(&ntype, file_ns::node_shader_init_normal_map);
node_type_storage(
&ntype, "NodeShaderNormalMap", node_free_standard_storage, node_copy_standard_storage);
node_type_gpu(&ntype, file_ns::gpu_shader_normal_map);
nodeRegisterType(&ntype);
}
|
