60 lines
1.5 KiB
C#
60 lines
1.5 KiB
C#
#region Copyright & License Information
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/*
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* Copyright 2007-2011 The OpenRA Developers (see AUTHORS)
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* This file is part of OpenRA, which is free software. It is made
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* available to you under the terms of the GNU General Public License
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* as published by the Free Software Foundation. For more information,
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* see COPYING.
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*/
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#endregion
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using System;
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using System.Runtime.InteropServices;
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using OpenRA.Graphics;
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using Tao.OpenGl;
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namespace OpenRA.Renderer.SdlCommon
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{
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public class VertexBuffer<T> : IVertexBuffer<T>
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where T : struct
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{
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static readonly int VertexSize = Marshal.SizeOf(typeof(T));
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int buffer;
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public VertexBuffer(int size)
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{
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Gl.glGenBuffersARB(1, out buffer);
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ErrorHandler.CheckGlError();
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Bind();
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Gl.glBufferDataARB(Gl.GL_ARRAY_BUFFER_ARB,
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new IntPtr(VertexSize * size),
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new T[size],
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Gl.GL_DYNAMIC_DRAW_ARB);
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ErrorHandler.CheckGlError();
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}
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public void SetData(T[] data, int length)
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{
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Bind();
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Gl.glBufferSubDataARB(Gl.GL_ARRAY_BUFFER_ARB,
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IntPtr.Zero,
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new IntPtr(VertexSize * length),
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data);
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ErrorHandler.CheckGlError();
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}
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public void Bind()
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{
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Gl.glBindBufferARB(Gl.GL_ARRAY_BUFFER_ARB, buffer);
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ErrorHandler.CheckGlError();
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Gl.glVertexPointer(3, Gl.GL_FLOAT, VertexSize, IntPtr.Zero);
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ErrorHandler.CheckGlError();
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Gl.glTexCoordPointer(4, Gl.GL_FLOAT, VertexSize, new IntPtr(12));
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ErrorHandler.CheckGlError();
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}
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void FinalizeInner() { Gl.glDeleteBuffersARB(1, ref buffer); }
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~VertexBuffer() { Game.RunAfterTick(FinalizeInner); }
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}
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}
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