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
|
/* SPDX-License-Identifier: GPL-2.0-or-later
* Copyright 2006 Blender Foundation. All rights reserved. */
/** \file
* \ingroup cmpnodes
*/
#include "BLI_float3x3.hh"
#include "UI_interface.h"
#include "UI_resources.h"
#include "COM_node_operation.hh"
#include "COM_utilities.hh"
#include "node_composite_util.hh"
/* **************** FILTER ******************** */
namespace blender::nodes::node_composite_filter_cc {
static void cmp_node_filter_declare(NodeDeclarationBuilder &b)
{
b.add_input<decl::Float>(N_("Fac"))
.default_value(1.0f)
.min(0.0f)
.max(1.0f)
.subtype(PROP_FACTOR)
.compositor_domain_priority(1);
b.add_input<decl::Color>(N_("Image"))
.default_value({1.0f, 1.0f, 1.0f, 1.0f})
.compositor_domain_priority(0);
b.add_output<decl::Color>(N_("Image"));
}
static void node_composit_buts_filter(uiLayout *layout, bContext *UNUSED(C), PointerRNA *ptr)
{
uiItemR(layout, ptr, "filter_type", UI_ITEM_R_SPLIT_EMPTY_NAME, "", ICON_NONE);
}
using namespace blender::realtime_compositor;
class FilterOperation : public NodeOperation {
public:
using NodeOperation::NodeOperation;
void execute() override
{
GPUShader *shader = shader_manager().get(get_shader_name());
GPU_shader_bind(shader);
GPU_shader_uniform_mat3_as_mat4(shader, "kernel", get_filter_kernel().ptr());
const Result &input_image = get_input("Image");
input_image.bind_as_texture(shader, "input_tx");
const Result &factor = get_input("Fac");
factor.bind_as_texture(shader, "factor_tx");
const Domain domain = compute_domain();
Result &output_image = get_result("Image");
output_image.allocate_texture(domain);
output_image.bind_as_image(shader, "output_img");
compute_dispatch_threads_at_least(shader, domain.size);
input_image.unbind_as_texture();
factor.unbind_as_texture();
output_image.unbind_as_image();
GPU_shader_unbind();
}
CMPNodeFilterMethod get_filter_method()
{
return (CMPNodeFilterMethod)bnode().custom1;
}
float3x3 get_filter_kernel()
{
/* Initialize the kernels as arrays of rows with the top row first. Edge detection kernels
* return the kernel in the X direction, while the kernel in the Y direction will be computed
* inside the shader by transposing the kernel in the X direction. */
switch (get_filter_method()) {
case CMP_NODE_FILTER_SOFT: {
const float kernel[3][3] = {{1.0f / 16.0f, 2.0f / 16.0f, 1.0f / 16.0f},
{2.0f / 16.0f, 4.0f / 16.0f, 2.0f / 16.0f},
{1.0f / 16.0f, 2.0f / 16.0f, 1.0f / 16.0f}};
return float3x3(kernel);
}
case CMP_NODE_FILTER_SHARP_BOX: {
const float kernel[3][3] = {
{-1.0f, -1.0f, -1.0f}, {-1.0f, 9.0f, -1.0f}, {-1.0f, -1.0f, -1.0f}};
return float3x3(kernel);
}
case CMP_NODE_FILTER_LAPLACE: {
const float kernel[3][3] = {{-1.0f / 8.0f, -1.0f / 8.0f, -1.0f / 8.0f},
{-1.0f / 8.0f, 1.0f, -1.0f / 8.0f},
{-1.0f / 8.0f, -1.0f / 8.0f, -1.0f / 8.0f}};
return float3x3(kernel);
}
case CMP_NODE_FILTER_SOBEL: {
const float kernel[3][3] = {{1.0f, 0.0f, -1.0f}, {2.0f, 0.0f, -2.0f}, {1.0f, 0.0f, -1.0f}};
return float3x3(kernel);
}
case CMP_NODE_FILTER_PREWITT: {
const float kernel[3][3] = {{1.0f, 0.0f, -1.0f}, {1.0f, 0.0f, -1.0f}, {1.0f, 0.0f, -1.0f}};
return float3x3(kernel);
}
case CMP_NODE_FILTER_KIRSCH: {
const float kernel[3][3] = {
{5.0f, -3.0f, -2.0f}, {5.0f, -3.0f, -2.0f}, {5.0f, -3.0f, -2.0f}};
return float3x3(kernel);
}
case CMP_NODE_FILTER_SHADOW: {
const float kernel[3][3] = {{1.0f, 2.0f, 1.0f}, {0.0f, 1.0f, 0.0f}, {-1.0f, -2.0f, -1.0f}};
return float3x3(kernel);
}
case CMP_NODE_FILTER_SHARP_DIAMOND: {
const float kernel[3][3] = {
{0.0f, -1.0f, 0.0f}, {-1.0f, 5.0f, -1.0f}, {0.0f, -1.0f, 0.0f}};
return float3x3(kernel);
}
default: {
const float kernel[3][3] = {{0.0f, 0.0f, 0.0f}, {0.0f, 1.0f, 0.0f}, {0.0f, 0.0f, 0.0f}};
return float3x3(kernel);
}
}
}
const char *get_shader_name()
{
switch (get_filter_method()) {
case CMP_NODE_FILTER_LAPLACE:
case CMP_NODE_FILTER_SOBEL:
case CMP_NODE_FILTER_PREWITT:
case CMP_NODE_FILTER_KIRSCH:
return "compositor_edge_filter";
case CMP_NODE_FILTER_SOFT:
case CMP_NODE_FILTER_SHARP_BOX:
case CMP_NODE_FILTER_SHADOW:
case CMP_NODE_FILTER_SHARP_DIAMOND:
default:
return "compositor_filter";
}
}
};
static NodeOperation *get_compositor_operation(Context &context, DNode node)
{
return new FilterOperation(context, node);
}
} // namespace blender::nodes::node_composite_filter_cc
void register_node_type_cmp_filter()
{
namespace file_ns = blender::nodes::node_composite_filter_cc;
static bNodeType ntype;
cmp_node_type_base(&ntype, CMP_NODE_FILTER, "Filter", NODE_CLASS_OP_FILTER);
ntype.declare = file_ns::cmp_node_filter_declare;
ntype.draw_buttons = file_ns::node_composit_buts_filter;
ntype.labelfunc = node_filter_label;
ntype.flag |= NODE_PREVIEW;
ntype.get_compositor_operation = file_ns::get_compositor_operation;
nodeRegisterType(&ntype);
}
|
