public static void SaveImage(DllImageData image, string filename, string extension, GliFormat format, int quality = 0)
{
if (!Dll.image_save(image.Resource.Id, filename, extension, (uint)format, quality))
{
throw new Exception(Dll.GetError());
}
}
/// <summary>
/// tries to load the image file and returns a list with loaded images
/// (one image file can contain multiple images with multiple faces with multiple mipmaps)
/// </summary>
/// <param name="file">filename</param>
/// <returns></returns>
public static DllImageData LoadImage(string file)
{
var res = new Resource(file);
Dll.image_info(res.Id, out var gliFormat, out var originalFormat, out var nLayer, out var nMipmaps);
return(new DllImageData(res, file, new LayerMipmapCount(nLayer, nMipmaps), new ImageFormat((GliFormat)gliFormat), (GliFormat)originalFormat));
}
public void Dispose()
{
if (Id != 0)
{
Dll.image_release(Id);
Id = 0;
}
}
public Resource(uint format, Size3 size, LayerMipmapCount lm)
{
Id = Dll.image_allocate(format, size.Width, size.Height, size.Depth, lm.Layers, lm.Mipmaps);
if (Id == 0)
{
throw new Exception("error allocating image: " + Dll.GetError());
}
}
public Resource(string file)
{
Id = Dll.image_open(file);
if (Id == 0)
{
throw new Exception("error in " + file + ": " + Dll.GetError());
}
}
public Mipmap(Resource resource, int layerId, int mipmapId)
{
Dll.image_info_mipmap(resource.Id, mipmapId, out var width, out var height, out var depth);
Depth = depth;
Width = width;
Height = height;
Bytes = Dll.image_get_mipmap(resource.Id, layerId, mipmapId, out var size);
Size = size;
}
public override MipInfo GetMipmap(LayerMipmapSlice lm)
{
var res = new MipInfo();
Dll.image_info_mipmap(Resource.Id, lm.Mipmap, out res.Size.X, out res.Size.Y, out res.Size.Z);
#if DEBUG
var expected = Size.GetMip(lm.Mipmap);
Debug.Assert(expected.Width == res.Size.Width);
Debug.Assert(expected.Height == res.Size.Height);
Debug.Assert(expected.Depth == res.Size.Depth);
#endif
res.Bytes = Dll.image_get_mipmap(Resource.Id, lm.Layer, lm.Mipmap, out res.ByteSize);
return(res);
}
public static List <GliFormat> GetExportFormats(string extension)
{
var ptr = Dll.get_export_formats(extension, out var nFormats);
if (ptr == IntPtr.Zero)
{
throw new Exception(Dll.GetError());
}
var rawArray = new int[nFormats];
Marshal.Copy(ptr, rawArray, 0, nFormats);
var res = new List <GliFormat>(nFormats);
res.AddRange(rawArray.Select(i => (GliFormat)i));
return(res);
}
private static Size3 GetSize(Resource res)
{
Dll.image_info_mipmap(res.Id, 0, out var width, out var height, out var depth);
return(new Size3(width, height, depth));
}