Mercurial > hg > orthanc-stone
annotate OrthancStone/Sources/Scene2D/Internals/OpenGLColorTextureProgram.cpp @ 1576:92fca2b3ba3d
sanitizing the handling of canvas size
author | Sebastien Jodogne <s.jodogne@gmail.com> |
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date | Thu, 24 Sep 2020 16:40:30 +0200 |
parents | 244ad1e4e76a |
children | 4fb8fdf03314 |
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) 2017-2020 Osimis S.A., Belgium |
591 | 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" | |
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23 #include "OpenGLShaderVersionDirective.h" |
591 | 24 |
25 static const char* FRAGMENT_SHADER = | |
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26 ORTHANC_STONE_OPENGL_SHADER_VERSION_DIRECTIVE |
591 | 27 "uniform sampler2D u_texture; \n" |
28 "varying vec2 v_texcoord; \n" | |
29 "void main() \n" | |
30 "{ \n" | |
31 " gl_FragColor = texture2D(u_texture, v_texcoord); \n" | |
32 "}"; | |
33 | |
34 | |
35 namespace OrthancStone | |
36 { | |
37 namespace Internals | |
38 { | |
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39 OpenGLColorTextureProgram::OpenGLColorTextureProgram(OpenGL::IOpenGLContext& context) |
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40 : program_(context, FRAGMENT_SHADER) |
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41 , context_(context) |
591 | 42 { |
43 } | |
44 | |
45 | |
46 void OpenGLColorTextureProgram::Apply(OpenGL::OpenGLTexture& texture, | |
47 const AffineTransform2D& transform, | |
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48 unsigned int canvasWidth, |
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49 unsigned int canvasHeight, |
591 | 50 bool useAlpha) |
51 { | |
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52 if (!context_.IsContextLost()) |
591 | 53 { |
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54 OpenGLTextureProgram::Execution execution(program_, texture, transform, canvasWidth, canvasHeight); |
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55 |
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56 if (useAlpha) |
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57 { |
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58 glEnable(GL_BLEND); |
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59 glBlendFunc(GL_ONE, GL_ONE_MINUS_SRC_ALPHA); |
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60 execution.DrawTriangles(); |
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61 glDisable(GL_BLEND); |
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62 } |
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63 else |
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64 { |
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65 execution.DrawTriangles(); |
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66 } |
591 | 67 } |
68 } | |
69 } | |
70 } |