void Z3DCanvasRenderer::process(Z3DEye eye)
{
if (!m_canvas)
return;
Z3DRenderInputPort ¤tInport = (eye == CenterEye) ?
m_inport : (eye == LeftEye) ? m_leftEyeInport : m_rightEyeInport;
// render to image
if (currentInport.isReady() && m_renderToImage) {
try {
renderInportToImage(m_renderToImageFilename, eye);
if (eye == CenterEye) {
LINFO() << "Saved rendering (" << currentInport.getSize().x << "," <<
currentInport.getSize().y << ")" << "to file:" << m_renderToImageFilename;
} else if (eye == RightEye) {
if (m_renderToImageType == HalfSideBySideStereoView) {
LINFO() << "Saved half sbs stereo rendering (" << currentInport.getSize().x << "," <<
currentInport.getSize().y << ")" << "to file:" << m_renderToImageFilename;
} else {
LINFO() << "Saved stereo rendering (" << currentInport.getSize().x << "x 2," <<
currentInport.getSize().y << ")" << "to file:" << m_renderToImageFilename;
}
}
}
catch (Exception const & e) {
LERROR() << "Exception:" << e.what();
m_renderToImageError = QString(e.what());
}
catch (std::exception const & e) {
LERROR() << "std exception:" << e.what();
m_renderToImageError = QString(e.what());
}
if (eye == CenterEye || eye == RightEye) {
m_renderToImage = false;
// now render the to screen to prevent a blank screen
invalidate();
}
return;
}
// render to screen
m_canvas->getGLFocus();
glViewport(0, 0, m_canvas->getPhysicalSize().x, m_canvas->getPhysicalSize().y);
if (eye == LeftEye)
glDrawBuffer(GL_BACK_LEFT);
else if (eye == RightEye)
glDrawBuffer(GL_BACK_RIGHT);
if (currentInport.isReady()) {
m_rendererBase->setViewport(m_canvas->getPhysicalSize());
m_textureCopyRenderer->setColorTexture(currentInport.getColorTexture());
m_textureCopyRenderer->setDepthTexture(currentInport.getDepthTexture());
m_rendererBase->render(eye);
CHECK_GL_ERROR;
} else {
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
CHECK_GL_ERROR;
}
}
void CanvasRenderer::process() {
if (!canvas_)
return;
canvas_->getGLFocus();
glViewport(0, 0, canvas_->getSize().x, canvas_->getSize().y);
if (inport_.isReady()) {
// render inport to image, if renderToImage flag has been set
if (renderToImage_) {
try {
renderInportToImage(renderToImageFilename_);
LINFO("Saved rendering with dimensions " << inport_.getSize() << " to file: " << tgt::FileSystem::cleanupPath(renderToImageFilename_));
}
catch (std::bad_alloc& /*e*/) {
LERROR("Exception in CanvasRenderer::renderInportToImage(): bad allocation (" << getID() << ")");
renderToImageError_ = "Not enough system memory (bad allocation)";
}
catch (VoreenException& e) {
LERROR(e.what());
renderToImageError_ = std::string(e.what());
}
catch (std::exception& e) {
LERROR("Exception in CanvasRenderer::renderInportToImage(): " << e.what() << " (" << getID() << ")");
renderToImageError_ = std::string(e.what());
}
renderToImage_ = false;
}
// map texture of input target onto a screen-aligned quad
else {
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
// activate shader
shader_->activate();
// set common uniforms
setGlobalShaderParameters(shader_);
// manually pass the viewport dimensions to the shader,
// since setGlobalShaderParameters() expects a render outport, which we do not have
shader_->setIgnoreUniformLocationError(true);
shader_->setUniform("screenDim_", tgt::vec2(canvas_->getSize()));
shader_->setUniform("screenDimRCP_", 1.f / tgt::vec2(canvas_->getSize()));
shader_->setIgnoreUniformLocationError(false);
// bind input textures
inport_.bindTextures(GL_TEXTURE0, GL_TEXTURE1);
// pass texture parameters to the shader
shader_->setUniform("colorTex_", 0);
shader_->setUniform("depthTex_", 1);
inport_.setTextureParameters(shader_, "texParams_");
LGL_ERROR;
// execute the shader
renderQuad();
shader_->deactivate();
LGL_ERROR;
}
}
else {
// render error texture
if (!errorTex_) {
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
return;
}
glClear(GL_DEPTH_BUFFER_BIT);
glActiveTexture(GL_TEXTURE0);
errorTex_->bind();
errorTex_->enable();
glColor3f(1.f, 1.f, 1.f);
renderQuad();
errorTex_->disable();
}
glActiveTexture(GL_TEXTURE0);
LGL_ERROR;
}