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
|
/* SPDX-License-Identifier: GPL-2.0-or-later
* Copyright 2005 Blender Foundation. All rights reserved. */
#include "node_shader_util.hh"
namespace blender::nodes::node_shader_geometry_cc {
static void node_declare(NodeDeclarationBuilder &b)
{
b.add_output<decl::Vector>(N_("Position"));
b.add_output<decl::Vector>(N_("Normal"));
b.add_output<decl::Vector>(N_("Tangent"));
b.add_output<decl::Vector>(N_("True Normal"));
b.add_output<decl::Vector>(N_("Incoming"));
b.add_output<decl::Vector>(N_("Parametric"));
b.add_output<decl::Float>(N_("Backfacing"));
b.add_output<decl::Float>(N_("Pointiness"));
b.add_output<decl::Float>(N_("Random Per Island"));
}
static int node_shader_gpu_geometry(GPUMaterial *mat,
bNode *node,
bNodeExecData * /*execdata*/,
GPUNodeStack *in,
GPUNodeStack *out)
{
/* HACK: Don't request GPU_MATFLAG_BARYCENTRIC if not used because it will
* trigger the use of geometry shader (and the performance penalty it implies). */
if (out[5].hasoutput) {
GPU_material_flag_set(mat, GPU_MATFLAG_BARYCENTRIC);
}
/* Optimization: don't request orco if not needed. */
const float val[4] = {0.0f, 0.0f, 0.0f, 0.0f};
GPUNodeLink *orco_link = out[2].hasoutput ? GPU_attribute(mat, CD_ORCO, "") : GPU_constant(val);
const bool success = GPU_stack_link(mat, node, "node_geometry", in, out, orco_link);
int i;
LISTBASE_FOREACH_INDEX (bNodeSocket *, sock, &node->outputs, i) {
node_shader_gpu_bump_tex_coord(mat, node, &out[i].link);
/* Normalize some vectors after dFdx/dFdy offsets.
* This is the case for interpolated, non linear functions.
* The resulting vector can still be a bit wrong but not as much.
* (see T70644) */
if (ELEM(i, 1, 2, 4)) {
GPU_link(mat,
"vector_math_normalize",
out[i].link,
out[i].link,
out[i].link,
out[i].link,
&out[i].link,
nullptr);
}
}
return success;
}
} // namespace blender::nodes::node_shader_geometry_cc
/* node type definition */
void register_node_type_sh_geometry()
{
namespace file_ns = blender::nodes::node_shader_geometry_cc;
static bNodeType ntype;
sh_node_type_base(&ntype, SH_NODE_NEW_GEOMETRY, "Geometry", NODE_CLASS_INPUT);
ntype.declare = file_ns::node_declare;
node_type_gpu(&ntype, file_ns::node_shader_gpu_geometry);
nodeRegisterType(&ntype);
}
|
