Mercurial > hg > orthanc-stone
comparison Framework/OpenGL/OpenGLProgram.cpp @ 579:fadacfbf5538
OpenGL programs and textures
author | Sebastien Jodogne <s.jodogne@gmail.com> |
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date | Fri, 19 Apr 2019 16:06:45 +0200 |
parents | |
children | 1091b2adeb5a |
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578:21fd70df3fc9 | 579:fadacfbf5538 |
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1 /** | |
2 * Stone of Orthanc | |
3 * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics | |
4 * Department, University Hospital of Liege, Belgium | |
5 * Copyright (C) 2017-2019 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 | |
26 #include <Core/OrthancException.h> | |
27 | |
28 | |
29 namespace OrthancStone | |
30 { | |
31 namespace OpenGL | |
32 { | |
33 OpenGLProgram::OpenGLProgram() | |
34 { | |
35 program_ = glCreateProgram(); | |
36 if (program_ == 0) | |
37 { | |
38 throw Orthanc::OrthancException(Orthanc::ErrorCode_InternalError, | |
39 "Cannot create an OpenGL program"); | |
40 } | |
41 } | |
42 | |
43 | |
44 OpenGLProgram::~OpenGLProgram() | |
45 { | |
46 assert(program_ != 0); | |
47 glDeleteProgram(program_); | |
48 } | |
49 | |
50 | |
51 void OpenGLProgram::Use() | |
52 { | |
53 glUseProgram(program_); | |
54 } | |
55 | |
56 | |
57 void OpenGLProgram::CompileShaders(const std::string& vertexCode, | |
58 const std::string& fragmentCode) | |
59 { | |
60 assert(program_ != 0); | |
61 | |
62 OpenGLShader vertexShader(GL_VERTEX_SHADER, vertexCode); | |
63 OpenGLShader fragmentShader(GL_FRAGMENT_SHADER, fragmentCode); | |
64 | |
65 glAttachShader(program_, vertexShader.Release()); | |
66 glAttachShader(program_, fragmentShader.Release()); | |
67 glLinkProgram(program_); | |
68 glValidateProgram(program_); | |
69 } | |
70 | |
71 | |
72 GLint OpenGLProgram::GetUniformLocation(const std::string& name) | |
73 { | |
74 GLint location = glGetUniformLocation(program_, name.c_str()); | |
75 | |
76 if (location == -1) | |
77 { | |
78 throw Orthanc::OrthancException(Orthanc::ErrorCode_InexistentItem, | |
79 "Inexistent uniform variable in shader: " + name); | |
80 } | |
81 else | |
82 { | |
83 return location; | |
84 } | |
85 } | |
86 | |
87 | |
88 GLint OpenGLProgram::GetAttributeLocation(const std::string& name) | |
89 { | |
90 GLint location = glGetAttribLocation(program_, name.c_str()); | |
91 | |
92 if (location == -1) | |
93 { | |
94 throw Orthanc::OrthancException(Orthanc::ErrorCode_InexistentItem, | |
95 "Inexistent attribute in shader: " + name); | |
96 } | |
97 else | |
98 { | |
99 return location; | |
100 } | |
101 } | |
102 } | |
103 } |