Update terrain layer when the terrain data changes.

2014-12-21 11:38:15 +13:00
parent a48a878a71
commit 7df12cb3e9
4 changed files with 47 additions and 14 deletions
--- a/OpenRA.Renderer.Sdl2/VertexBuffer.cs
+++ b/OpenRA.Renderer.Sdl2/VertexBuffer.cs
@@ -34,10 +34,15 @@ namespace OpenRA.Renderer.Sdl2
 		}

 		public void SetData(T[] data, int length)
+		{
+			SetData(data, 0, length);
+		}
+
+		public void SetData(T[] data, int start, int length)
 		{
 			Bind();
 			GL.BufferSubData(BufferTarget.ArrayBuffer,
-				IntPtr.Zero,
+				new IntPtr(VertexSize * start),
 				new IntPtr(VertexSize * length),
 				data);
 			ErrorHandler.CheckGlError();