Mercurial > hg > orthanc-stone
annotate OrthancStone/Sources/Scene2D/Internals/OpenGLColorTextureProgram.cpp @ 1977:ba971d9082d3
cont pixel probe
author | Sebastien Jodogne <s.jodogne@gmail.com> |
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date | Sat, 29 Oct 2022 16:31:09 +0200 |
parents | 7053b8a0aaec |
children | 07964689cb0b |
rev | line source |
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591 | 1 /** |
2 * Stone of Orthanc | |
3 * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics | |
4 * Department, University Hospital of Liege, Belgium | |
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5 * Copyright (C) 2017-2022 Osimis S.A., Belgium |
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6 * Copyright (C) 2021-2022 Sebastien Jodogne, ICTEAM UCLouvain, Belgium |
591 | 7 * |
8 * This program is free software: you can redistribute it and/or | |
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9 * modify it under the terms of the GNU Lesser General Public License |
591 | 10 * as published by the Free Software Foundation, either version 3 of |
11 * the License, or (at your option) any later version. | |
12 * | |
13 * This program is distributed in the hope that it will be useful, but | |
14 * WITHOUT ANY WARRANTY; without even the implied warranty of | |
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15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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16 * Lesser General Public License for more details. |
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17 * |
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18 * You should have received a copy of the GNU Lesser General Public |
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19 * License along with this program. If not, see |
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20 * <http://www.gnu.org/licenses/>. |
591 | 21 **/ |
22 | |
23 | |
24 #include "OpenGLColorTextureProgram.h" | |
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25 #include "OpenGLShaderVersionDirective.h" |
591 | 26 |
27 static const char* FRAGMENT_SHADER = | |
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28 ORTHANC_STONE_OPENGL_SHADER_VERSION_DIRECTIVE |
591 | 29 "uniform sampler2D u_texture; \n" |
30 "varying vec2 v_texcoord; \n" | |
31 "void main() \n" | |
32 "{ \n" | |
33 " gl_FragColor = texture2D(u_texture, v_texcoord); \n" | |
34 "}"; | |
35 | |
36 | |
37 namespace OrthancStone | |
38 { | |
39 namespace Internals | |
40 { | |
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41 OpenGLColorTextureProgram::OpenGLColorTextureProgram(OpenGL::IOpenGLContext& context) |
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42 : program_(context, FRAGMENT_SHADER) |
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43 , context_(context) |
591 | 44 { |
45 } | |
46 | |
47 | |
48 void OpenGLColorTextureProgram::Apply(OpenGL::OpenGLTexture& texture, | |
49 const AffineTransform2D& transform, | |
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50 unsigned int canvasWidth, |
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51 unsigned int canvasHeight, |
591 | 52 bool useAlpha) |
53 { | |
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54 if (!context_.IsContextLost()) |
591 | 55 { |
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56 OpenGLTextureProgram::Execution execution(program_, texture, transform, canvasWidth, canvasHeight); |
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57 |
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58 if (useAlpha) |
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59 { |
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60 glEnable(GL_BLEND); |
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61 glBlendFunc(GL_ONE, GL_ONE_MINUS_SRC_ALPHA); |
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62 execution.DrawTriangles(); |
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63 glDisable(GL_BLEND); |
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64 } |
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65 else |
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66 { |
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67 execution.DrawTriangles(); |
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68 } |
591 | 69 } |
70 } | |
71 } | |
72 } |