/// <summary>
/// Create the texture, using this technique.
/// </summary>
/// <param name="ctx">
/// A <see cref="GraphicsContext"/> used for allocating resources.
/// </param>
public override void Create(GraphicsContext ctx)
{
int internalFormat = _PixelFormat.GetGlInternalFormat();
PixelFormat format = _PixelFormat.GetGlFormat();
// Define empty texture
Gl.TexImage2D(_Target, (int)_Level, internalFormat, (int)_Width, (int)_Height, 0, format, /* Unused */ PixelType.UnsignedByte, IntPtr.Zero);
// Define texture properties
_Texture2d.DefineExtents(_PixelFormat, _Width, _Height, 1, _Level);
}
/// <summary>
/// Create the texture, using this technique.
/// </summary>
/// <param name="ctx">
/// A <see cref="GraphicsContext"/> used for allocating resources.
/// </param>
public override void Create(GraphicsContext ctx)
{
int internalFormat = _PixelFormat.GetGlInternalFormat();
PixelFormat format = _Image.PixelLayout.GetGlFormat();
PixelType type = _Image.PixelLayout.GetPixelType();
// Set pixel transfer
foreach (int alignment in new int[] { 8, 4, 2, 1 })
{
if ((_Image.Stride % alignment) != 0)
{
continue;
}
Gl.PixelStore(PixelStoreParameter.UnpackAlignment, alignment);
break;
}
// Upload texture contents
Gl.TexImage2D(_Target, (int)_Level, internalFormat, (int)_Image.Width, (int)_Image.Height, 0, format, type, _Image.ImageBuffer);
// Define texture properties
_Texture2d.DefineExtents(_PixelFormat, _Image.Width, _Image.Height, 1, _Level);
}
