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opentk:how to read texture1D files

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nickme    253

i am trying to read a file into texture1D. i know how to read an image into texture2D. i had problem converting it to read texture1D. i just dont know how to use Bitmap..LockBits() for texture1D.

here is the code for loading texture2D:

[source lang="csharp"]
static public int LoadTexture(string filename)
// If a filename isn't provided, throw an error.
if (String.IsNullOrEmpty(filename))
throw new ArgumentException(filename);

// Generate an OpenGL texture handle and bind to it.
int id = GL.GenTexture();
GL.BindTexture(TextureTarget.Texture2D, id);

// Load up the bitmap image from a file on the computer.
Bitmap bmp = new Bitmap(filename);

// Lock the image's data into system memory so it can be used by OpenGL. We are forcing a
// 32-bit alpha/red/green/blue pixel format.
BitmapData bmpData = bmp.LockBits(new Rectangle(0, 0, bmp.Width, bmp.Height),
ImageLockMode.ReadOnly, System.Drawing.Imaging.PixelFormat.Format32bppArgb);

// With the image locked, we can tell OpenGL to store the bitmap's scan data into our texture buffer.
GL.TexImage2D(TextureTarget.Texture2D, 0, PixelInternalFormat.Rgba,
bmpData.Width, bmpData.Height, 0,
OpenTK.Graphics.OpenGL.PixelFormat.Bgra, PixelType.UnsignedByte, bmpData.Scan0);

// Last, we unlock the bitmap. At this point, the Bitmap is no longer needed and can be discarded.

// We also need to tell OpenGL how to render the texture when it is either smaller or larger than the
// original bitmap size. Here, we are using nearest as we want to see the pixels without any filtering.
GL.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureMinFilter,
GL.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureMagFilter,

// Finally, we return the texture buffer handle back to the application for later use.
return id;


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