void Stimulus3DShaderDemo::update( const double& time, const osg::Vec3& observer_position, const osg::Quat& observer_orientation )
{
Poco::NamedMutex::ScopedLock lock(_memlock);
if (!_slave) {
char old = *_mem.begin();
*_mem.begin() = (old % 'z') == 0 ? 'a' : old + 1;
}
//std::cerr << *_mem.begin() << "\n";
}
void Stimulus3DShaderDemo::post_init(bool slave) {
osg::ref_ptr<osg::Node> drawn_geometry_node = load_osg_file("Stimulus3DShaderDemo.osg");
osg::StateSet* state = drawn_geometry_node->getOrCreateStateSet();
state->setMode(GL_LIGHTING,osg::StateAttribute::OFF);
osg::Program* AltitudeProgram;
osg::Shader* AltitudeVertObj;
osg::Shader* AltitudeFragObj;
AltitudeProgram = new osg::Program;
AltitudeProgram->setName( "altitude" );
AltitudeVertObj = new osg::Shader( osg::Shader::VERTEX );
AltitudeFragObj = new osg::Shader( osg::Shader::FRAGMENT );
AltitudeProgram->addShader( AltitudeFragObj );
AltitudeProgram->addShader( AltitudeVertObj );
load_shader_source( AltitudeVertObj, "rainbow.vert" );
load_shader_source( AltitudeFragObj, "rainbow.frag" );
state->setAttributeAndModes(AltitudeProgram, osg::StateAttribute::ON);
example_param_uniform = new osg::Uniform( osg::Uniform::FLOAT, "example_param" );
state->addUniform( example_param_uniform );
_group = new osg::Group;
_group->addChild(drawn_geometry_node);
_group->setName("Stimulus3DShaderDemo._group");
_slave = slave;
{
Poco::NamedMutex::ScopedLock lock(_memlock);
*_mem.begin() = 'a';
}
}
const char* MemoryManager::getData(HashType hashType) {
if (mem_ptrs.count(hashType) && mem_ptrs[hashType]) {
throw SharedMemoryException("Try to get unreleased pointer.");
}
const Poco::File* data_fd = mem_fds[hashType];
Poco::SharedMemory* data = new Poco::SharedMemory(*data_fd, Poco::SharedMemory::AM_READ);
mem_ptrs[hashType] = data;
return data->begin();
}