/// <summary>
/// Uploads the contents of a bitmap to the given texture layer and level.<br/>
/// Will result in an OpenGL error if the given bitmap is incompatible with the textures storage.
/// </summary>
public static void LoadBitmap(this LayeredTexture texture, Bitmap bitmap, int layer, int level = 0)
{
texture.Bind();
var data = LockBits(bitmap);
try
{
var map = BitmapFormat.Get(bitmap);
GL.TexSubImage3D(texture.TextureTarget, level, 0, 0, layer, data.Width, data.Height, 1,
map.PixelFormat, map.PixelType, data.Scan0);
}
finally
{
bitmap.UnlockBits(data);
}
CheckError();
}
/// <summary>
/// Attaches a single layer of the given texture level to an attachment point.
/// </summary>
/// <remarks>
/// Note that for cube maps and cube map arrays the <paramref name="layer"/> parameter actually indexes the layer-faces.<br/>
/// Thus for cube maps the layer parameter equals the face to be bound.<br/>
/// For cube map arrays the layer parameter can be calculated as 6 * arrayLayer + face, which is done automatically when using
/// the corresponding overload <see cref="Attach(FramebufferTarget, FramebufferAttachment, TextureCubemapArray, int, int, int)"/>.
/// </remarks>
/// <param name="target">The framebuffer target to bind to.</param>
/// <param name="attachment">The attachment point to attach to.</param>
/// <param name="texture">The texture to attach.</param>
/// <param name="layer">The layer of the texture to attach.</param>
/// <param name="level">The level of the texture to attach.</param>
public void Attach(FramebufferTarget target, FramebufferAttachment attachment, LayeredTexture texture, int layer, int level = 0)
{
texture.AssertLevel(level);
AssertActive(target);
GL.FramebufferTextureLayer(target, attachment, texture.Handle, level, layer);
CheckState(target);
}
