public void PrepareForDrawing(Camera camera)
{
Vector2 xZ = camera.ViewPosition.XZ;
float num = MathUtils.Sqr(m_subsystemSky.VisibilityRange);
BoundingFrustum viewFrustum = camera.ViewFrustum;
int gameWidgetIndex = camera.GameWidget.GameWidgetIndex;
m_chunksToDraw.Clear();
TerrainChunk[] allocatedChunks = m_subsystemTerrain.Terrain.AllocatedChunks;
foreach (TerrainChunk terrainChunk in allocatedChunks)
{
if (terrainChunk.NewGeometryData)
{
lock (terrainChunk.Geometry)
{
if (terrainChunk.NewGeometryData)
{
terrainChunk.NewGeometryData = false;
SetupTerrainChunkGeometryVertexIndexBuffers(terrainChunk);
}
}
}
terrainChunk.DrawDistanceSquared = Vector2.DistanceSquared(xZ, terrainChunk.Center);
if (terrainChunk.DrawDistanceSquared <= num)
{
if (viewFrustum.Intersection(terrainChunk.BoundingBox))
{
m_chunksToDraw.Add(terrainChunk);
}
if (terrainChunk.State != TerrainChunkState.Valid)
{
continue;
}
float num2 = terrainChunk.FogEnds[gameWidgetIndex];
if (num2 != float.MaxValue)
{
if (num2 == 0f)
{
StartChunkFadeIn(camera, terrainChunk);
}
else
{
RunChunkFadeIn(camera, terrainChunk);
}
}
}
else
{
terrainChunk.FogEnds[gameWidgetIndex] = 0f;
}
}
ChunksDrawn = 0;
ChunkDrawCalls = 0;
ChunkTrianglesDrawn = 0;
}