void Drawable::compileGLObjects(RenderInfo& renderInfo) const
{
#ifdef OSG_GL_DISPLAYLISTS_AVAILABLE
if (!renderInfo.getState()->useVertexBufferObject(_supportsVertexBufferObjects && _useVertexBufferObjects) && _useDisplayList)
{
// get the contextID (user defined ID of 0 upwards) for the
// current OpenGL context.
unsigned int contextID = renderInfo.getContextID();
// get the globj for the current contextID.
GLuint& globj = _globjList[contextID];
// call the globj if already set otherwise compile and execute.
if( globj != 0 )
{
glDeleteLists( globj, 1 );
}
globj = generateDisplayList(contextID, getGLObjectSizeHint());
glNewList( globj, GL_COMPILE );
drawInner(renderInfo);
glEndList();
}
#endif
}
void ComputeDispatch::drawImplementation(RenderInfo& renderInfo) const
{
renderInfo.getState()->get<GLExtensions>()->glDispatchCompute(_numGroupsX, _numGroupsY, _numGroupsZ);
}
void Drawable::draw(RenderInfo& renderInfo) const
{
State& state = *renderInfo.getState();
bool useVertexArrayObject = state.useVertexArrayObject(_useVertexArrayObject);
if (useVertexArrayObject)
{
unsigned int contextID = renderInfo.getContextID();
VertexArrayState* vas = _vertexArrayStateList[contextID].get();
if (!vas)
{
_vertexArrayStateList[contextID] = vas = createVertexArrayState(renderInfo, true);
// OSG_NOTICE<<" Geometry::draw() "<<this<<", assigned _vertexArrayStateList[renderInfo.getContextID()]="<<_vertexArrayStateList[renderInfo.getContextID()].get()<<", vas="<<vas<< std::endl;
}
else
{
// vas->setRequiresSetArrays(getDataVariance()==osg::Object::DYNAMIC);
// OSG_NOTICE<<" Geometry::draw() "<<this<<", reusing _vertexArrayStateList[renderInfo.getContextID()]="<<_vertexArrayStateList[renderInfo.getContextID()].get()<<", vas="<<vas<< std::endl;
}
State::SetCurrentVertexArrayStateProxy setVASProxy(state, vas);
vas->bindVertexArrayObject();
drawInner(renderInfo);
vas->setRequiresSetArrays(getDataVariance()==osg::Object::DYNAMIC);
return;
}
// TODO, add check against whether VAO is active and supported
if (state.getCurrentVertexArrayState()) state.getCurrentVertexArrayState()->bindVertexArrayObject();
#ifdef OSG_GL_DISPLAYLISTS_AVAILABLE
if (!state.useVertexBufferObject(_supportsVertexBufferObjects && _useVertexBufferObjects) && _useDisplayList)
{
// get the contextID (user defined ID of 0 upwards) for the
// current OpenGL context.
unsigned int contextID = renderInfo.getContextID();
// get the globj for the current contextID.
GLuint& globj = _globjList[contextID];
if( globj == 0 )
{
// compile the display list
globj = generateDisplayList(contextID, getGLObjectSizeHint());
glNewList( globj, GL_COMPILE );
drawInner(renderInfo);
glEndList();
}
// call the display list
glCallList( globj);
}
else
#endif
{
// if state.previousVertexArrayState() is different than currentVertexArrayState bind current
// OSG_NOTICE<<"Fallback drawInner()........................"<<std::endl;
drawInner(renderInfo);
}
}
void coVolumeDrawable::drawImplementation(RenderInfo &renderInfo) const
{
vvDebugMsg::msg(3, "coVolumeDrawable::drawImplementation()");
const unsigned ctx = renderInfo.getState()->getContextID();
while (ctx >= contextState.size())
{
// this will delete the old renderer contextState.resize(ctx+1);
ContextState *nc = new ContextState;
contextState.push_back(nc);
}
vvRenderer *&renderer = contextState[ctx]->renderer;
if (vd && !renderer)
{
// Debug level value may be either [NO_MESSAGES|FEW_MESSAGES|MOST_MESSAGES|ALL_MESSAGES]
// Or, in the same order and meaning the same as the string equivalents [0|1|2|3]
bool debugLevelExists = false;
const int debugLevelInt = covise::coCoviseConfig::getInt("COVER.Plugin.Volume.DebugLevel", 0, &debugLevelExists);
if (debugLevelExists)
{
if ((debugLevelInt >= 0) && (debugLevelInt <= 9))
{
vvDebugMsg::setDebugLevel(debugLevelInt);
}
else
{
// In that case, the debug level was specified as a string literal
std::string debugLevelStr = covise::coCoviseConfig::getEntry("COVER.Plugin.Volume.DebugLevel");
if (!debugLevelStr.empty())
{
if (strcasecmp(debugLevelStr.c_str(), "NO_MESSAGES") == 0)
{
vvDebugMsg::setDebugLevel(vvDebugMsg::NO_MESSAGES);
}
else if (strcasecmp(debugLevelStr.c_str(), "FEW_MESSAGES") == 0)
{
vvDebugMsg::setDebugLevel(vvDebugMsg::FEW_MESSAGES);
}
else if (strcasecmp(debugLevelStr.c_str(), "MOST_MESSAGES") == 0)
{
vvDebugMsg::setDebugLevel(vvDebugMsg::MOST_MESSAGES);
}
else if (strcasecmp(debugLevelStr.c_str(), "ALL_MESSAGES") == 0)
{
vvDebugMsg::setDebugLevel(vvDebugMsg::ALL_MESSAGES);
}
}
}
}
bool imageScalingExists = false;
const bool useOffscreenBuffer = covise::coCoviseConfig::isOn("imageScaling", "COVER.Plugin.Volume.Renderer", false, &imageScalingExists);
bool numGPUSlavesExists = false;
const char **displayNames = NULL;
virvo::BufferPrecision multiGpuPrecision = virvo::Short;
const int numGPUSlaves = covise::coCoviseConfig::getInt("COVER.Plugin.Volume.MultiGPU.NumSlaves", -1, &numGPUSlavesExists);
std::vector<const char *> hostnames;
std::vector<int> ports;
std::vector<const char *> alternativeFilenames;
const bool useMultiGPU = numGPUSlavesExists;
if (useMultiGPU)
{
// Buffer precision for multi gpu rendering slaves.
// As with debug level. May either be [BYTE|SHORT|FLOAT]
// or equivalently [8|16|32]
bool bufferPrecisionExists;
const int precisionInt = covise::coCoviseConfig::getInt("COVER.Plugin.Volume.MultiGPU.BufferPrecision", 16, &bufferPrecisionExists);
if (bufferPrecisionExists)
{
if ((precisionInt == 8) || (precisionInt == 16) || (precisionInt == 32))
{
if (precisionInt == 8)
multiGpuPrecision = virvo::Byte;
else if (precisionInt == 16)
multiGpuPrecision = virvo::Short;
else
multiGpuPrecision = virvo::Float;
}
else
{
// In that case, the buffer precision was specified as a string literal
std::string precisionStr = covise::coCoviseConfig::getEntry("COVER.Plugin.Volume.MultiGPU.BufferPrecision");
if (strcasecmp(precisionStr.c_str(), "BYTE") == 0)
{
multiGpuPrecision = virvo::Byte;
}
else if (strcasecmp(precisionStr.c_str(), "SHORT") == 0)
{
multiGpuPrecision = virvo::Short;
}
else if (strcasecmp(precisionStr.c_str(), "FLOAT") == 0)
{
multiGpuPrecision = virvo::Float;
}
}
}
displayNames = new const char *[numGPUSlaves];
for (int i = 0; i < numGPUSlaves; ++i)
{
std::stringstream disp;
disp << "COVER.Plugin.Volume.MultiGPU.GPU:";
disp << i;
std::string entry = covise::coCoviseConfig::getEntry("display", disp.str());
#ifdef VERBOSE
cerr << "Use additional GPU for rendering on display: " << entry << endl;
#endif
char *cstr = new char[strlen(entry.c_str()) + 1];
strncpy(cstr, entry.c_str(), strlen(entry.c_str()));
displayNames[i] = cstr;
}
}
renderer = vvRendererFactory::create(vd, renderState, geoType.c_str(), voxType.c_str());
if (renderer)
{
renderer->setParameter(vvRenderer::VV_OFFSCREENBUFFER, useOffscreenBuffer);
}
}
// if a renderer exists, process regular rendering procedure
if (renderer)
{
for (std::vector<vvRenderState::ParameterType>::iterator it = contextState[ctx]->parameterChanges.begin();
it != contextState[ctx]->parameterChanges.end();
++it)
{
renderer->setParameter(*it, renderState.getParameter(*it));
}
contextState[ctx]->parameterChanges.clear();
if (contextState[ctx]->applyTF)
{
renderer->updateTransferFunction();
contextState[ctx]->applyTF = false;
}
ref_ptr<StateSet> currentState = new StateSet;
renderInfo.getState()->captureCurrentState(*currentState);
renderInfo.getState()->pushStateSet(currentState.get());
renderer->setCurrentFrame(currentFrame);
//renderer->setQuality(quality);
renderer->setViewingDirection(viewDir);
renderer->setObjectDirection(objDir);
renderer->renderFrame();
renderInfo.getState()->popStateSet();
}
else
{
//cerr << "vd==NULL" << endl;
}
}
