public void UpdateLights(IEnumerable <LightSource> lights, vec3 camera, uint count)
{
var change = false;
LightCount = 0u;
LightsHeap.Clear(); // Generates garbage
foreach (var light in lights)
{
LightsHeap.Insert(light ^ camera, light);
}
for (LightCount = 0u; LightCount < count; ++LightCount)
{
if (LightsHeap.Count == 0)
{
break;
}
var i = (int)LightCount;
var light = LightsHeap.RemoveMin().Data;
if (i < OrderedLights.Count)
{
if (LightSource.AreEqual(light, OrderedLights[i]))
{
continue;
}
OrderedLights[i] = light;
}
else
{
OrderedLights.Add(light);
}
change = true;
}
if (change)
{
++LightingState;
}
}