fix rendering of very large maps

OpenRA.FileFormats/Graphics/IGraphicsDevice.cs

@@ -57,7 +57,7 @@ namespace OpenRA.FileFormats.Graphics
 	public interface IIndexBuffer
 	{
 		void Bind();
-		void SetData( ushort[] indices, int length );
+		void SetData( uint[] indices, int length );
 	}
 
 	public interface IShader

OpenRA.Game/Graphics/LineRenderer.cs

@@ -18,7 +18,7 @@ namespace OpenRA.Graphics
 		Renderer renderer;
 
 		Vertex[] vertices = new Vertex[ Renderer.TempBufferSize ];
-		ushort[] indices = new ushort[ Renderer.TempBufferSize ];
+		uint[] indices = new uint[ Renderer.TempBufferSize ];
 		int nv = 0, ni = 0;
 
 		public LineRenderer( Renderer renderer )

OpenRA.Game/Graphics/SpriteRenderer.cs

@@ -18,7 +18,7 @@ namespace OpenRA.Graphics
 		IShader shader;
 
 		Vertex[] vertices = new Vertex[Renderer.TempBufferSize];
-		ushort[] indices = new ushort[Renderer.TempBufferSize];
+		uint[] indices = new uint[Renderer.TempBufferSize];
 		Sheet currentSheet = null;
 		int nv = 0, ni = 0;
 

OpenRA.Game/Graphics/TerrainRenderer.cs

@@ -35,7 +35,7 @@ namespace OpenRA.Graphics
 				x => Game.modData.SheetBuilder.Add(world.TileSet.GetBytes(x), tileSize));
 
 			Vertex[] vertices = new Vertex[4 * map.Bounds.Height * map.Bounds.Width];
-			ushort[] indices = new ushort[6 * map.Bounds.Height * map.Bounds.Width];
+			uint[] indices = new uint[6 * map.Bounds.Height * map.Bounds.Width];
 
 			terrainSheet = tileMapping[map.MapTiles.Value[map.Bounds.Left, map.Bounds.Top]].sheet;
 

OpenRA.Game/Graphics/Util.cs

@@ -44,7 +44,7 @@ namespace OpenRA.Graphics
 
 		static float[] channelSelect = { 0.75f, 0.25f, -0.25f, -0.75f };
 
-		public static void FastCreateQuad(Vertex[] vertices, ushort[] indices, float2 o, Sprite r, int palette, int nv, int ni, float2 size)
+		public static void FastCreateQuad(Vertex[] vertices, uint[] indices, float2 o, Sprite r, int palette, int nv, int ni, float2 size)
 		{
 			var attrib = new float2(palette / (float)HardwarePalette.MaxPalettes, channelSelect[(int)r.channel]);
 
@@ -55,12 +55,12 @@ namespace OpenRA.Graphics
 			vertices[nv + 2] = new Vertex(new float2(o.X, o.Y + size.Y), 
 				r.FastMapTextureCoords(2), attrib);
 			vertices[nv + 3] = new Vertex(new float2(o.X + size.X, o.Y + size.Y), 
-				r.FastMapTextureCoords(3), attrib);
+				r.FastMapTextureCoords(3), attrib);
-
+
-			indices[ni] = (ushort)(nv);
+			indices[ni] = (uint)(nv);
-			indices[ni + 1] = indices[ni + 3] = (ushort)(nv + 1);
+			indices[ni + 1] = indices[ni + 3] = (uint)(nv + 1);
-			indices[ni + 2] = indices[ni + 5] = (ushort)(nv + 2);
+			indices[ni + 2] = indices[ni + 5] = (uint)(nv + 2);
-			indices[ni + 4] = (ushort)(nv + 3);
+			indices[ni + 4] = (uint)(nv + 3);
 		}
 
 		static readonly int[] channelMasks = { 2, 1, 0, 3 };	// yes, our channel order is nuts.

OpenRA.Renderer.Cg/IndexBuffer.cs

@@ -10,7 +10,9 @@
 
 using System;
 using OpenRA.FileFormats.Graphics;
-using Tao.OpenGl;
+using Tao.OpenGl;
+
+using ElemType = System.UInt32;
 
 namespace OpenRA.Renderer.Cg
 {
@@ -24,18 +26,18 @@ namespace OpenRA.Renderer.Cg
 			GraphicsDevice.CheckGlError();
 			Bind();
 			Gl.glBufferData(Gl.GL_ELEMENT_ARRAY_BUFFER,
-				new IntPtr(2 * size),
+				new IntPtr(sizeof(ElemType) * size),
-				new ushort[ size ],
+				new ElemType[ size ],
 				Gl.GL_DYNAMIC_DRAW);
 			GraphicsDevice.CheckGlError();
 		}
 
-		public void SetData(ushort[] data, int length)
+		public void SetData(ElemType[] data, int length)
 		{
 			Bind();
 			Gl.glBufferSubData(Gl.GL_ELEMENT_ARRAY_BUFFER,
 				IntPtr.Zero,
-				new IntPtr(2 * length),
+				new IntPtr(sizeof(ElemType) * length),
 				data);
 			GraphicsDevice.CheckGlError();
 		}

OpenRA.Renderer.Gl/GraphicsDevice.cs

@@ -273,14 +273,14 @@ namespace OpenRA.Renderer.Glsl
 		public void DrawIndexedPrimitives( PrimitiveType pt, Range<int> vertices, Range<int> indices )
 		{
 			Gl.glDrawElements( ModeFromPrimitiveType( pt ), indices.End - indices.Start,
-			Gl.GL_UNSIGNED_SHORT, new IntPtr( indices.Start * 2 ) );
+			Gl.GL_UNSIGNED_INT, new IntPtr( indices.Start * 4 ) );
 			CheckGlError();
 		}
 
 		public void DrawIndexedPrimitives( PrimitiveType pt, int numVerts, int numPrimitives )
 		{
-			Gl.glDrawElements( ModeFromPrimitiveType( pt ), numPrimitives * IndicesPerPrimitive( pt ),
+			Gl.glDrawElements( ModeFromPrimitiveType( pt ), numPrimitives * IndicesPerPrimitive( pt ),
-			Gl.GL_UNSIGNED_SHORT, IntPtr.Zero );
+			Gl.GL_UNSIGNED_INT, IntPtr.Zero);
 			CheckGlError();
 		}
 

OpenRA.Renderer.Gl/IndexBuffer.cs

@@ -12,6 +12,8 @@ using System;
 using OpenRA.FileFormats.Graphics;
 using Tao.OpenGl;
 
+using ElemType = System.UInt32;
+
 namespace OpenRA.Renderer.Glsl
 {
 	public class IndexBuffer : IIndexBuffer, IDisposable
@@ -24,18 +26,18 @@ namespace OpenRA.Renderer.Glsl
 			GraphicsDevice.CheckGlError();
 			Bind();
 			Gl.glBufferData(Gl.GL_ELEMENT_ARRAY_BUFFER,
-				new IntPtr(2 * size),
+				new IntPtr(sizeof(ElemType) * size),
-				new ushort[ size ],
+				new ElemType[ size ],
 				Gl.GL_DYNAMIC_DRAW);
 			GraphicsDevice.CheckGlError();
-		}
+		}
-
+
-		public void SetData(ushort[] data, int length)
+		public void SetData(ElemType[] data, int length)
 		{
 			Bind();
 			Gl.glBufferSubData(Gl.GL_ELEMENT_ARRAY_BUFFER,
-				IntPtr.Zero,
+				IntPtr.Zero,
-				new IntPtr(2 * length),
+				new IntPtr(sizeof(ElemType) * length),
 				data);
 			GraphicsDevice.CheckGlError();
 		}

OpenRA.Renderer.Null/NullGraphicsDevice.cs

@@ -54,7 +54,7 @@ namespace OpenRA.Renderer.Null
 	public class NullIndexBuffer : IIndexBuffer
 	{
 		public void Bind() {}
-		public void SetData(ushort[] indices, int length) {}
+		public void SetData(uint[] indices, int length) {}
 	}
 	
 	public class NullShader : IShader