void MonoTexCube::drawAll()
{
loadMaterial();
loadModel();
draw();
unloadModel();
unloadMaterial();
}
/*! Renders the scenegraph
This method is responsible for sorting by material and rendering game objects in material priority order
\param root The root of the scenegraph to be rendered
*/
void Renderer::render(Transform *root){
Vector3 cameraPos;
float distance;
GameObject *object;
std::vector<Material*>::iterator mit;
// Single common camera for all rendering
if (camera)
cameraPos = camera->gameObject->getTransform()->getWorldPosition();
else
cameraPos = Vector3(0,0,0);
buildRenderQueue(root);
for (int i=0; i<PRIORITY_LEVELS; i++) {
// temp list of objects requiring sorted draw order (if any)
std::priority_queue<GameObject*, std::vector<GameObject*>, GameObjectCameraDistanceCompare> sorted;
for (mit = materials[i].begin(); mit!=materials[i].end(); mit++){
std::queue<GameObject*> &q = (*mit)->getQueue(); // objects to be drawn
if (!(*mit)->getSortedDraw()) {
// objects for normal unsorted materials are drawn immediately
loadMaterial(*mit);
while (!q.empty()) {
object = q.front();
if (object->isVisible()) {
draw(object);
}
q.pop();
}
unloadMaterial(*mit);
}
else {
// objects to be sorted and drawn later
while (!q.empty()) {
object = q.front();
if (object->isVisible()) {
// Note using squared distance as we only care about relative distance
distance = cameraPos.squaredDistance(object->getTransform()->getWorldPosition());
object->setDistanceToCamera(distance);
sorted.push(object);
}
q.pop();
}
}
}
// Draw sorted objects (if any)
Material *loaded = NULL; // current loaded material
while (!sorted.empty()) {
object = sorted.top();
if (loaded != object->getMaterial()) {
// only load material if changed
loaded = object->getMaterial();
loadMaterial(loaded);
}
draw(object);
sorted.pop();
}
}
}
