void VideoWidget::initializeGL()
{
glEnable(GL_MULTISAMPLE);
QGLWidget *hidden = new QGLWidget( NULL, this );
if ( hidden ) {
hidden->hide();
emit newSharedContext( hidden );
}
QGLWidget *thumb = new QGLWidget();
if ( thumb ) {
thumb->hide();
emit newThumbContext( thumb );
}
QGLWidget *fences = new QGLWidget( NULL, this );
if ( fences ) {
fences->hide();
emit newFencesContext( fences );
}
}
VertexBufferObjectAccess::pointer Mesh::getVertexBufferObjectAccess(
accessType type,
OpenCLDevice::pointer device) {
if(!mIsInitialized)
throw Exception("Surface has not been initialized.");
if(mSurfaceIsBeingWrittenTo)
throw Exception("Requesting access to a surface that is already being written to.");
if (type == ACCESS_READ_WRITE) {
if (isAnyDataBeingAccessed()) {
throw Exception(
"Trying to get write access to an object that is already being accessed");
}
mSurfaceIsBeingWrittenTo = true;
updateModifiedTimestamp();
}
if(!mVBOHasData) {
// TODO create VBO
// Have to have a drawable available before glewInit and glGenBuffers
#if defined(__APPLE__) || defined(__MACOSX)
#else
#if _WIN32
#else
// If no Window is present, create a dummy gl context
if(!QApplication::instance()) { // TODO make this work on all platforms
SimpleWindow::initializeQtApp();
// Need a drawable for this to work
QGLWidget* widget = new QGLWidget;
widget->show();
widget->hide(); // TODO should probably delete widget as well
std::cout << "created a drawable" << std::endl;
}
#endif
#endif
GLenum err = glewInit();
if(err != GLEW_OK)
throw Exception("GLEW init error");
glGenBuffers(1, &mVBOID);
glBindBuffer(GL_ARRAY_BUFFER, mVBOID);
if(mHostHasData) {
// If host has data, transfer it.
// Create data arrays with vertices and normals interleaved
uint counter = 0;
float* data = new float[mNrOfTriangles*18];
for(uint i = 0; i < mNrOfTriangles; i++) {
Vector3ui triangle = mTriangles[i];
for(uint j = 0; j < 3; j++) {
SurfaceVertex vertex = mVertices[triangle[j]];
for(uint k = 0; k < 3; k++) {
data[counter+k] = vertex.position[k];
//std::cout << data[counter+k] << std::endl;
data[counter+3+k] = vertex.normal[k];
}
//std::cout << "...." << std::endl;
counter += 6;
}
}
glBufferData(GL_ARRAY_BUFFER, mNrOfTriangles*18*sizeof(float), data, GL_STATIC_DRAW);
delete[] data;
} else {
glBufferData(GL_ARRAY_BUFFER, mNrOfTriangles*18*sizeof(float), NULL, GL_STATIC_DRAW);
}
glBindBuffer(GL_ARRAY_BUFFER, 0);
glFinish();
//std::cout << "Created VBO with ID " << mVBOID << " and " << mNrOfTriangles << " of triangles" << std::endl;
// TODO Transfer data if any exist
mVBOHasData = true;
mVBODataIsUpToDate = true;
} else {
if(!mVBODataIsUpToDate) {
// TODO Update data
}
}
mVBODataIsBeingAccessed = true;
VertexBufferObjectAccess::pointer accessObject(new VertexBufferObjectAccess(mVBOID, &mVBODataIsBeingAccessed, &mSurfaceIsBeingWrittenTo));
return std::move(accessObject);
}
