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Only render shroud/ore that is in the current viewport

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This commit is contained in:
Paul Chote
2010-09-19 18:33:47 +12:00
parent fef291a27e
commit 23da8a24bd
3 changed files with 12 additions and 1 deletions
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9
OpenRA.Game/Graphics/Viewport.cs
View File

@@ -158,5 +158,14 @@ namespace OpenRA.Graphics
if (localPlayer.Shroud.Disabled) return null;
return localPlayer.Shroud.Bounds;
}
public Rectangle ViewBounds()
{
int2 boundary = new int2(3,3); // Add a curtain of cells around the viewport to account for rounding errors
var origin = new int2((int)(scrollPosition.X/Game.CellSize), (int)(scrollPosition.Y/Game.CellSize));
var tl = ViewToWorld(origin).ToInt2() - boundary;
var br = ViewToWorld(origin + new int2(Width, Height)).ToInt2() + boundary;
return Rectangle.FromLTRB(tl.X, tl.Y, br.X, br.Y);
}
}
}

2
OpenRA.Game/ShroudRenderer.cs
View File

@@ -145,7 +145,7 @@ namespace OpenRA
}
var clipRect = Bounds.HasValue ? Rectangle.Intersect(Bounds.Value, map.Bounds) : map.Bounds;
clipRect = Rectangle.Intersect(Game.viewport.ViewBounds(), clipRect);
var miny = clipRect.Top;
var maxy = clipRect.Bottom;
var minx = clipRect.Left;

2
OpenRA.Game/Traits/World/ResourceLayer.cs
View File

@@ -29,6 +29,8 @@ namespace OpenRA.Traits
var cliprect = Game.viewport.ShroudBounds().HasValue
? Rectangle.Intersect(Game.viewport.ShroudBounds().Value, world.Map.Bounds) : world.Map.Bounds;
cliprect = Rectangle.Intersect(Game.viewport.ViewBounds(), cliprect);
var minx = cliprect.Left;
var maxx = cliprect.Right;