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using System;
using OpenTK.Graphics.OpenGL;
namespace Crow.GLBackend
{
[Serializable]
public enum Format
{
Argb32,
Rgb24,
A8,
A1,
Rgb16565,
ARGB32,
RGB24
}
[Serializable]
public enum LineJoin
{
Miter,
Round,
Bevel
}
[Serializable]
public enum LineCap
{
Butt,
Round,
Square
}
public class Surface : IDisposable
{
public static int samples;
public int texId,
width,
height;
Format format;
public PixelFormat PixelFormat;
public PixelInternalFormat InternalFormat;
public Surface (int _width, int _height)
{
format = Format.Argb32;
width = _width;
height = _height;
createTexture ();
}
public Surface (Format _format,int _width, int _height)
{
format = _format;
width = _width;
height = _height;
InternalFormat = PixelInternalFormat.Rgba;
PixelFormat = PixelFormat.Bgra;
createTexture ();
}
public Surface CreateSimilar()
{
return new Surface (format, width, height);
}
void createTexture()
{
texId = GL.GenTexture();
GL.BindTexture(TextureTarget.Texture2D, texId);
GL.TexImage2D(TextureTarget.Texture2D,0,
PixelInternalFormat.Rgba, width, height,0,PixelFormat.Bgra,PixelType.UnsignedByte,IntPtr.Zero);
GL.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureMinFilter, (int)TextureMinFilter.Nearest);
GL.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureMagFilter, (int)TextureMagFilter.Nearest);
GL.BindTexture(TextureTarget.Texture2D, 0);
}
public void Save(string fileName)
{
GL.BindTexture(TextureTarget.Texture2D, texId);
System.Drawing.Bitmap bmp = new System.Drawing.Bitmap(width, height, System.Drawing.Imaging.PixelFormat.Format32bppArgb);
System.Drawing.Imaging.BitmapData data = bmp.LockBits(new System.Drawing.Rectangle(0, 0, width, height),
System.Drawing.Imaging.ImageLockMode.WriteOnly, System.Drawing.Imaging.PixelFormat.Format32bppArgb);
GL.GetTexImage(TextureTarget.Texture2D, 0, OpenTK.Graphics.OpenGL.PixelFormat.Bgra, PixelType.UnsignedByte, data.Scan0);
bmp.UnlockBits(data);
bmp.RotateFlip (System.Drawing.RotateFlipType.RotateNoneFlipY);
bmp.Save(fileName);
GL.BindTexture(TextureTarget.Texture2D, 0);
}
#region IDisposable implementation
public void Dispose ()
{
if (GL.IsTexture (texId))
GL.DeleteTexture (texId);
}
#endregion
}
}
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