/// <summary>
/// Creates a texture from bytes laid out in BGRA format, row major.
/// </summary>
/// <param name="data">The raw bytes containing the texture in BGRA format, row major.</param>
/// <param name="width">Width of the texture in pixels.</param>
/// <param name="height">Height of the texture in pixels.</param>
/// <param name="atlas">The atlas to add the texture to.</param>
/// <returns>The created texture.</returns>
public static Texture FromRawBytes(byte[] data, int width, int height, TextureAtlas atlas = null, PixelFormat format = PixelFormat.Rgba)
{
if (data == null)
{
return(null);
}
Texture tex = atlas == null ? new Texture(width, height) : atlas.Add(width, height);
var upload = new TextureUpload(data);
upload.Format = format;
tex.SetData(upload);
return(tex);
}
public unsafe void SetData(Bitmap bitmap, int level = 0)
{
if (TextureGL == null)
{
return;
}
int width = Math.Min(bitmap.Width, Width);
int height = Math.Min(bitmap.Height, Height);
BitmapData bData = bitmap.LockBits(new Rectangle(0, 0, width, height), ImageLockMode.ReadOnly, PixelFormat.Format32bppArgb);
TextureUpload upload = new TextureUpload(width * height * 4)
{
Level = level,
Bounds = new Rectangle(0, 0, width, height)
};
byte[] data = upload.Data;
int bytesPerPixel = 4;
byte *bDataPointer = (byte *)bData.Scan0;
for (var y = 0; y < height; y++)
{
// This is why real scan-width is important to have!
IntPtr row = new IntPtr(bDataPointer + y * bData.Stride);
Marshal.Copy(row, data, width * bytesPerPixel * y, width * bytesPerPixel);
}
bitmap.UnlockBits(bData);
bool isTransparent = bgraToRgba(data, width * height * 4);
TextureGL.IsTransparent = isTransparent;
if (!isTransparent)
{
SetData(upload);
}
else
{
upload.Dispose();
}
}
/// <summary>
/// Creates a texture from a data stream representing a bitmap.
/// </summary>
/// <param name="stream">The data stream containing the texture data.</param>
/// <param name="atlas">The atlas to add the texture to.</param>
/// <returns>The created texture.</returns>
public static Texture FromStream(Stream stream, TextureAtlas atlas = null)
{
if (stream == null || stream.Length == 0)
{
return(null);
}
try
{
var data = new TextureUpload(stream);
Texture tex = atlas == null ? new Texture(data.Width, data.Height) : new Texture(atlas.Add(data.Width, data.Height));
tex.SetData(data);
return(tex);
}
catch (ArgumentException)
{
return(null);
}
}
public void SetData(TextureUpload upload)
{
TextureGL?.SetData(upload);
}
/// <summary>
/// Retrieves a texture from the store and adds it to the atlas.
/// </summary>
/// <param name="name">The name of the texture.</param>
/// <returns>The texture.</returns>
public new virtual Texture Get(string name)
{
Texture tex = null;
try
{
if (textureCache.TryGetValue(name, out tex))
{
//use existing TextureGL (but provide a new texture instance).
tex = tex != null ? new Texture(tex.TextureGL) : null;
return(tex);
}
Stream s = base.GetStream($@"{name}");
if (s == null)
{
return(null);
}
using (MagickImage mainImage = new MagickImage(s))
{
tex = atlas != null?atlas.Add(mainImage.Width, mainImage.Height) : new Texture(mainImage.Width, mainImage.Height);
TextureUpload upload = new TextureUpload(mainImage.Width * mainImage.Height * 4);
mainImage.Write(new MemoryStream(upload.Data), MagickFormat.Rgba);
tex.SetData(upload);
}
//load available mipmaps
//int level = 1;
//int div = 2;
//while (tex.Width / div > 0)
//{
// s = base.GetStream($@"{name}/{div}");
// if (s == null) break;
// int w = tex.Width / div;
// int h = tex.Height / div;
// TextureUpload upload = new TextureUpload(w * h * 4)
// {
// Level = level
// };
// using (MagickImage image = new MagickImage(s))
// {
// if (image.Width != w || image.Height != h)
// {
// image.Resize(new MagickGeometry($"{w}x{h}!"));
// }
// image.Write(new MemoryStream(upload.Data), MagickFormat.Rgba);
// }
// tex.SetData(upload);
// level++;
// div *= 2;
//}
textureCache[name] = tex;
return(tex);
}
finally
{
if (tex != null && ScaleAdjust != 1)
{
tex.DpiScale = 1 / ScaleAdjust;
}
}
}
