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comparison Framework/Scene2D/Internals/OpenGLColorTextureProgram.cpp @ 591:b66ced2c43d4

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OpenGLTextureProgram
author Sebastien Jodogne <s.jodogne@gmail.com>
date Fri, 26 Apr 2019 12:05:38 +0200
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children e3f21a265be5
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590:5430bcffba57 591:b66ced2c43d4
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 "OpenGLColorTextureProgram.h"
23
24
25 static const char* FRAGMENT_SHADER =
26 "uniform sampler2D u_texture; \n"
27 "varying vec2 v_texcoord; \n"
28 "void main() \n"
29 "{ \n"
30 " gl_FragColor = texture2D(u_texture, v_texcoord); \n"
31 "}";
32
33
34 namespace OrthancStone
35 {
36 namespace Internals
37 {
38 OpenGLColorTextureProgram::OpenGLColorTextureProgram(OpenGL::IOpenGLContext& context) :
39 program_(context, FRAGMENT_SHADER)
40 {
41 }
42
43
44 void OpenGLColorTextureProgram::Apply(OpenGL::OpenGLTexture& texture,
45 const AffineTransform2D& transform,
46 bool useAlpha)
47 {
48 OpenGLTextureProgram::Execution execution(program_, texture, transform);
49
50 if (useAlpha)
51 {
52 glEnable(GL_BLEND);
53 glBlendFunc(GL_ONE, GL_ONE_MINUS_SRC_ALPHA);
54 execution.DrawTriangles();
55 glDisable(GL_BLEND);
56 }
57 else
58 {
59 execution.DrawTriangles();
60 }
61 }
62 }
63 }