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
200
201
202
203
204
205
206
207
208
209
210
211
212
213
|
/************************************************************************
*
* Copyright (C) 2025 IRCAD France
*
* This file is part of Sight.
*
* Sight is free software: you can redistribute it and/or modify it under
* the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* Sight 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 Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with Sight. If not, see <https://www.gnu.org/licenses/>.
*
***********************************************************************/
#include "viz/scene3d/material/standard.hpp"
#include "viz/scene3d/helper/shading.hpp"
#include <viz/scene3d/layer.hpp>
#include <viz/scene3d/mesh.hpp>
#include <OgreTechnique.h>
namespace sight::viz::scene3d::material
{
//------------------------------------------------------------------------------
standard::standard(const std::string& _name) :
generic(_name, standard::TEMPLATE)
{
}
//------------------------------------------------------------------------------
void standard::update_options_mode(int _options_mode)
{
// Clean everything, thus we don't need to filter out OIT generated passes
this->clean_generated_techniques();
// First remove the normals pass if there is already one
this->remove_pass(material::generic::passes::NORMALS);
this->remove_pass(material::generic::passes::SELECTED);
const Ogre::Material::Techniques& techniques = m_material->getTechniques();
if(_options_mode == data::material::normals || _options_mode == data::material::cells_normals)
{
for(auto* const current_technique : techniques)
{
// We need the first pass of the current technique in order to copy its rendering states in the normals pass
Ogre::Pass* first_pass = current_technique->getPass(0);
SIGHT_ASSERT("Pass is null", first_pass);
const bool depth_only = current_technique->getName() == "depth";
// We copy the first pass, thus keeping all rendering states
Ogre::Pass* normals_pass = current_technique->createPass();
*normals_pass = *first_pass;
normals_pass->setName(material::generic::passes::NORMALS);
// Vertex shader
normals_pass->setVertexProgram("Normals_VP");
std::string gp_name = depth_only ? "DepthPeeling/depthMap/" : "";
gp_name += (_options_mode == data::material::normals)
? "VerticesNormals_GP"
: "CellsNormals_GP";
normals_pass->setGeometryProgram(gp_name);
if(!depth_only)
{
std::string fp_name = normals_pass->getFragmentProgramName();
fp_name = viz::scene3d::helper::shading::set_permutation_in_program_name(fp_name, "Edge_Normal");
normals_pass->setFragmentProgram(fp_name);
}
// Updates the normal length according to the bounding box's size
normals_pass->getGeometryProgramParameters()->setNamedConstant("u_sceneSize", m_mesh_size);
}
}
else if(_options_mode == data::material::selected)
{
for(auto* const current_technique : techniques)
{
if(current_technique->getName() != "depth")
{
// We need the first pass of the current technique in order to copy its rendering states in the normals
// pass
Ogre::Pass* first_pass = current_technique->getPass(0);
SIGHT_ASSERT("Pass is null", first_pass);
// We copy the first pass, thus keeping all rendering states
Ogre::Pass* selected_pass = current_technique->createPass();
*selected_pass = *first_pass;
selected_pass->setName(material::generic::passes::SELECTED);
selected_pass->setFragmentProgram("Default/ghost_fp");
selected_pass->setDepthWriteEnabled(false);
selected_pass->setDepthCheckEnabled(false);
selected_pass->setSceneBlending(Ogre::SBT_TRANSPARENT_ALPHA);
selected_pass->getFragmentProgramParameters()->setNamedConstant(
"u_rim_params",
Ogre::ColourValue(
0.4F,
0.6F,
0.8F
)
);
selected_pass->setDiffuse(Ogre::ColourValue(0.8F, 1.0F, 0.0F));
}
}
}
}
//------------------------------------------------------------------------------
void standard::set_shading(
data::material::shading_t _shading_mode,
int _num_lights,
bool _has_diffuse_texture,
bool _use_texture_alpha
)
{
const bool need_diffuse_texture = data::mesh::has<data::mesh::attribute::point_tex_coords>(m_layout)
&& _has_diffuse_texture;
const auto mode = _shading_mode;
const Ogre::String permutation = viz::scene3d::helper::shading::get_permutation(
mode,
need_diffuse_texture,
data::mesh::has<data::mesh::attribute::point_colors>(m_layout)
);
this->clean_generated_techniques();
// Iterate through each technique found in the material and switch the shading mode
const Ogre::Material::Techniques& techniques = m_material->getTechniques();
for(auto* const tech : techniques)
{
SIGHT_ASSERT("technique is not set", tech);
const Ogre::Technique::Passes& passes = tech->getPasses();
for(auto* const ogre_pass : passes)
{
// Nothing to do for edge and normal passes
if(ogre_pass->getName() == material::generic::passes::EDGES
|| ogre_pass->getName() == material::generic::passes::NORMALS
|| ogre_pass->getName() == material::generic::passes::SELECTED)
{
continue;
}
// "Regular" pipeline
std::string vp_name = ogre_pass->getVertexProgramName();
vp_name = viz::scene3d::helper::shading::set_permutation_in_program_name(vp_name, permutation);
ogre_pass->setVertexProgram(vp_name);
std::string fp_name = ogre_pass->getFragmentProgramName();
fp_name = viz::scene3d::helper::shading::set_permutation_in_program_name(fp_name, permutation);
ogre_pass->setFragmentProgram(fp_name);
Ogre::GpuProgramParametersSharedPtr vp = ogre_pass->getVertexProgramParameters();
if(vp->_findNamedConstantDefinition("u_fNumLights") != nullptr)
{
vp->setNamedConstant("u_fNumLights", static_cast<float>(_num_lights));
}
if(ogre_pass->hasFragmentProgram())
{
Ogre::GpuProgramParametersSharedPtr fp = ogre_pass->getFragmentProgramParameters();
if(fp->_findNamedConstantDefinition("u_fNumLights") != nullptr)
{
fp->setNamedConstant("u_fNumLights", static_cast<float>(_num_lights));
}
// Updates the u_hasTextureAlpha flag uniform according to the configuration of the texture adaptor
if(need_diffuse_texture)
{
if(fp->_findNamedConstantDefinition("u_useTextureAlpha") != nullptr)
{
int use_texture_alpha = static_cast<int>(_use_texture_alpha);
fp->setNamedConstant("u_useTextureAlpha", use_texture_alpha);
}
}
}
}
}
}
//------------------------------------------------------------------------------
void standard::set_layout(const viz::scene3d::mesh& _mesh)
{
auto bbox = _mesh.bounds();
m_mesh_size = bbox.getSize().length();
generic::set_layout(_mesh);
}
} // namespace sight::viz::scene3d::material
|
