PostProcessorDepthImagePlugin.cc

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#include <ACG/GL/acg_glew.hh>

#include "PostProcessorDepthImagePlugin.hh"

#include <ACG/GL/ScreenQuad.hh>

#include <OpenFlipper/BasePlugin/PluginFunctions.hh>


PostProcessorDepthImagePlugin::PostProcessorDepthImagePlugin()
: shader_(0)
{

}


PostProcessorDepthImagePlugin::~PostProcessorDepthImagePlugin()
{
  delete shader_;
}

QString PostProcessorDepthImagePlugin::postProcessorName() {
  return QString("Show Depth Image");
}

QString PostProcessorDepthImagePlugin::checkOpenGL() 
{
  if ( ! ACG::openGLVersion(3, 0) )
    return QString("Insufficient OpenGL Version! OpenGL 3.0 or higher required");

  return QString("");
}


void PostProcessorDepthImagePlugin::postProcess(ACG::GLState* _glstate, const std::vector<const PostProcessorInput*>& _input, const PostProcessorOutput& _output) {

  // ======================================================================================================
  // Load shader if needed
  // ======================================================================================================
  if (!shader_)
    shader_ = GLSL::loadProgram("ShowDepth/screenquad.glsl", "ShowDepth/depth.glsl");

  // ======================================================================================================
  // Bind input texture
  // ======================================================================================================

  _input[0]->bindDepthTex(0);

  // ======================================================================================================
  // Bind output FBO
  // ======================================================================================================

  _output.bind();

  // ======================================================================================================
  // Setup shader
  // ======================================================================================================

  shader_->use();
  shader_->setUniform("textureSampler", 0);

  // ======================================================================================================
  // Execute
  // ======================================================================================================

  ACG::ScreenQuad::draw(shader_);

  shader_->disable();
}