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PostProcessorSobelPlugin.cc
1 /*===========================================================================*\
2 * *
3 * OpenFlipper *
4 * Copyright (c) 2001-2015, RWTH-Aachen University *
5 * Department of Computer Graphics and Multimedia *
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40 \*===========================================================================*/
41
42 /*===========================================================================*\
43 * *
44 * $Revision$ *
45 * $LastChangedBy$ *
46 * $Date$ *
47 * *
48 \*===========================================================================*/
49
50 #include <ACG/GL/acg_glew.hh>
51
52 #include "PostProcessorSobelPlugin.hh"
53
54 #include <ACG/GL/ScreenQuad.hh>
55
56 #include <OpenFlipper/BasePlugin/PluginFunctions.hh>
57
58 PostProcessorSobelPlugin::PostProcessorSobelPlugin() :
59 shader_(0)
60 {
61 }
62
63 PostProcessorSobelPlugin::~PostProcessorSobelPlugin()
64 {
65 delete shader_;
66 }
67
68
69 QString PostProcessorSobelPlugin::postProcessorName() {
70 return QString("Sobel");
71 }
72
73 void PostProcessorSobelPlugin::postProcess(ACG::GLState* _glstate, const std::vector<const PostProcessorInput*>& _input, const PostProcessorOutput& _output) {
74
75 // ======================================================================================================
76 // Load shader if needed
77 // ======================================================================================================
78 if (!shader_)
79 shader_ = GLSL::loadProgram("Sobel/screenquad.glsl", "Sobel/sobel.glsl");
80
81 // ======================================================================================================
82 // Bind input texture
83 // ======================================================================================================
84
85 _input[0]->bindColorTex(0);
86
87 // ======================================================================================================
88 // Bind output FBO
89 // ======================================================================================================
90
91 _output.bind();
92
93 // ======================================================================================================
94 // Setup shader
95 // ======================================================================================================
96
97 shader_->use();
98 shader_->setUniform("textureSampler", 0);
99
100 ACG::Vec2f texcoordOffset(1.0f / float(_input[0]->width), 1.0f / float(_input[0]->height));
101 shader_->setUniform("texcoordOffset", texcoordOffset);
102
103 // ======================================================================================================
104 // Execute
105 // ======================================================================================================
106
107 ACG::ScreenQuad::draw(shader_);
108
109
110 shader_->disable();
111 }
112
113
114 #if QT_VERSION < 0x050000
115 Q_EXPORT_PLUGIN2( postprocessorsobelplugin , PostProcessorSobelPlugin );
116 #endif
117
PostProcessorOutput
Definition: PostProcessorInterface.hh:99
ACG::ScreenQuad::draw
static void draw(GLSL::Program *_prog=0)
Draw the screen quad.
Definition: ScreenQuad.cc:147
GLSL::loadProgram
GLSL::PtrProgram loadProgram(const char *vertexShaderFile, const char *tessControlShaderFile, const char *tessEvaluationShaderFile, const char *geometryShaderFile, const char *fragmentShaderFile, const GLSL::StringList *macros, bool verbose)
Definition: GLSLShader.cc:1082
ACG::GLState
Definition: GLState.hh:220
GLSL::Program::use
void use()
Enables the program object for using.
Definition: GLSLShader.cc:351
PostProcessorSobelPlugin
Definition: PostProcessorSobelPlugin.hh:59
OpenMesh::VectorT
Definition: Vector11T.hh:83
GLSL::Program::setUniform
void setUniform(const char *_name, GLint _value)
Set int uniform to specified value.
Definition: GLSLShader.cc:391
PostProcessorSobelPlugin::shader_
GLSL::Program * shader_
shader
Definition: PostProcessorSobelPlugin.hh:92
PluginFunctions.hh
GLSL::Program::disable
void disable()
Resets to standard rendering pipeline.
Definition: GLSLShader.cc:361