91 lines
2.1 KiB
C#
91 lines
2.1 KiB
C#
#region Copyright & License Information
|
|
/*
|
|
* Copyright 2007-2015 The OpenRA Developers (see AUTHORS)
|
|
* This file is part of OpenRA, which is free software. It is made
|
|
* available to you under the terms of the GNU General Public License
|
|
* as published by the Free Software Foundation. For more information,
|
|
* see COPYING.
|
|
*/
|
|
#endregion
|
|
|
|
using System;
|
|
using System.Runtime.InteropServices;
|
|
using OpenTK.Graphics.OpenGL;
|
|
|
|
namespace OpenRA.Platforms.Default
|
|
{
|
|
public sealed class VertexBuffer<T> : IVertexBuffer<T>
|
|
where T : struct
|
|
{
|
|
static readonly int VertexSize = Marshal.SizeOf(typeof(T));
|
|
int buffer;
|
|
bool disposed;
|
|
|
|
public VertexBuffer(int size)
|
|
{
|
|
GL.GenBuffers(1, out buffer);
|
|
ErrorHandler.CheckGlError();
|
|
Bind();
|
|
GL.BufferData(BufferTarget.ArrayBuffer,
|
|
new IntPtr(VertexSize * size),
|
|
new T[size],
|
|
BufferUsageHint.DynamicDraw);
|
|
ErrorHandler.CheckGlError();
|
|
}
|
|
|
|
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,
|
|
new IntPtr(VertexSize * start),
|
|
new IntPtr(VertexSize * length),
|
|
data);
|
|
ErrorHandler.CheckGlError();
|
|
}
|
|
|
|
public void SetData(IntPtr data, int start, int length)
|
|
{
|
|
Bind();
|
|
GL.BufferSubData(BufferTarget.ArrayBuffer,
|
|
new IntPtr(VertexSize * start),
|
|
new IntPtr(VertexSize * length),
|
|
data);
|
|
ErrorHandler.CheckGlError();
|
|
}
|
|
|
|
public void Bind()
|
|
{
|
|
GL.BindBuffer(BufferTarget.ArrayBuffer, buffer);
|
|
ErrorHandler.CheckGlError();
|
|
GL.VertexPointer(3, VertexPointerType.Float, VertexSize, IntPtr.Zero);
|
|
ErrorHandler.CheckGlError();
|
|
GL.TexCoordPointer(4, TexCoordPointerType.Float, VertexSize, new IntPtr(12));
|
|
ErrorHandler.CheckGlError();
|
|
}
|
|
|
|
~VertexBuffer()
|
|
{
|
|
Game.RunAfterTick(() => Dispose(false));
|
|
}
|
|
|
|
public void Dispose()
|
|
{
|
|
Game.RunAfterTick(() => Dispose(true));
|
|
GC.SuppressFinalize(this);
|
|
}
|
|
|
|
void Dispose(bool disposing)
|
|
{
|
|
if (disposed)
|
|
return;
|
|
disposed = true;
|
|
GL.DeleteBuffers(1, ref buffer);
|
|
}
|
|
}
|
|
}
|