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comparison OrthancStone/Sources/OpenGL/OpenGLProgram.cpp @ 1512:244ad1e4e76a

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reorganization of folders
author Sebastien Jodogne <s.jodogne@gmail.com>
date Tue, 07 Jul 2020 16:21:02 +0200
parents Framework/OpenGL/OpenGLProgram.cpp@30deba7bc8e2
children 85e117739eca
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1511:9dfeee74c1e6 1512:244ad1e4e76a
1 /**
2 * Stone of Orthanc
3 * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics
4 * Department, University Hospital of Liege, Belgium
5 * Copyright (C) 2017-2020 Osimis S.A., Belgium
6 *
7 * This program is free software: you can redistribute it and/or
8 * modify it under the terms of the GNU Affero General Public License
9 * as published by the Free Software Foundation, either version 3 of
10 * the License, or (at your option) any later version.
11 *
12 * This program is distributed in the hope that it will be useful, but
13 * WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Affero General Public License for more details.
16 *
17 * You should have received a copy of the GNU Affero General Public License
18 * along with this program. If not, see <http://www.gnu.org/licenses/>.
19 **/
20
21
22 #include "OpenGLProgram.h"
23
24 #include "OpenGLShader.h"
25 #include "IOpenGLContext.h"
26
27 #include <OrthancException.h>
28
29 namespace OrthancStone
30 {
31 namespace OpenGL
32 {
33 OpenGLProgram::OpenGLProgram(OpenGL::IOpenGLContext& context)
34 : context_(context)
35 {
36 program_ = glCreateProgram();
37 ORTHANC_OPENGL_CHECK("glCreateProgram");
38 if (program_ == 0)
39 {
40 throw Orthanc::OrthancException(Orthanc::ErrorCode_InternalError,
41 "Cannot create an OpenGL program");
42 }
43 }
44
45
46 OpenGLProgram::~OpenGLProgram()
47 {
48 try
49 {
50 if (!context_.IsContextLost())
51 {
52 ORTHANC_OPENGL_TRACE_CURRENT_CONTEXT("About to call glDeleteProgram");
53 assert(program_ != 0);
54 glDeleteProgram(program_);
55 ORTHANC_OPENGL_CHECK("glDeleteProgram");
56 }
57 }
58 catch (const Orthanc::OrthancException& e)
59 {
60 if (e.HasDetails())
61 {
62 LOG(ERROR) << "OrthancException in ~OpenGLProgram: " << e.What() << " Details: " << e.GetDetails();
63 }
64 else
65 {
66 LOG(ERROR) << "OrthancException in ~OpenGLProgram: " << e.What();
67 }
68 }
69 catch (const std::exception& e)
70 {
71 LOG(ERROR) << "std::exception in ~OpenGLProgram: " << e.what();
72 }
73 catch (...)
74 {
75 LOG(ERROR) << "Unknown exception in ~OpenGLProgram";
76 }
77 }
78
79 void OpenGLProgram::Use()
80 {
81 //ORTHANC_OPENGL_TRACE_CURRENT_CONTEXT("About to call glUseProgram");
82 glUseProgram(program_);
83 ORTHANC_OPENGL_CHECK("glUseProgram");
84 }
85
86 void OpenGLProgram::CompileShaders(const std::string& vertexCode,
87 const std::string& fragmentCode)
88 {
89 assert(program_ != 0);
90
91 OpenGLShader vertexShader(GL_VERTEX_SHADER, vertexCode);
92 OpenGLShader fragmentShader(GL_FRAGMENT_SHADER, fragmentCode);
93
94 glAttachShader(program_, vertexShader.Release());
95 ORTHANC_OPENGL_CHECK("glAttachShader");
96 glAttachShader(program_, fragmentShader.Release());
97 ORTHANC_OPENGL_CHECK("glAttachShader");
98 glLinkProgram(program_);
99 ORTHANC_OPENGL_CHECK("glLinkProgram");
100 glValidateProgram(program_);
101 ORTHANC_OPENGL_CHECK("glValidateProgram");
102 }
103
104 GLint OpenGLProgram::GetUniformLocation(const std::string& name)
105 {
106 GLint location = glGetUniformLocation(program_, name.c_str());
107 ORTHANC_OPENGL_CHECK("glGetUniformLocation");
108
109 if (location == -1)
110 {
111 throw Orthanc::OrthancException(Orthanc::ErrorCode_InexistentItem,
112 "Inexistent uniform variable in shader: " + name);
113 }
114 else
115 {
116 return location;
117 }
118 }
119
120
121 GLint OpenGLProgram::GetAttributeLocation(const std::string& name)
122 {
123 GLint location = glGetAttribLocation(program_, name.c_str());
124 ORTHANC_OPENGL_CHECK("glGetAttribLocation");
125
126 if (location == -1)
127 {
128 throw Orthanc::OrthancException(Orthanc::ErrorCode_InexistentItem,
129 "Inexistent attribute in shader: " + name);
130 }
131 else
132 {
133 return location;
134 }
135 }
136 }
137 }