public static Texture2D FromStream(Stream stream)
{
if (stream.CanSeek && stream.Position == stream.Length)
{
stream.Seek(0, SeekOrigin.Begin);
}
int width, height, len;
IntPtr pixels = FNA3D.ReadImageStream(
stream,
out width,
out height,
out len
);
Texture2D result = new Texture2D(
width,
height
);
result.SetDataPointerEXT(
0,
null,
pixels,
len
);
FNA3D.FNA3D_Image_Free(pixels);
return(result);
}
/// <summary>
/// Loads image data from a given stream.
/// </summary>
/// <remarks>
/// This is an extension of XNA 4 and is not compatible with XNA. It exists to help with dynamically reloading
/// textures while games are running. Games can use this method to read a stream into memory and then call
/// SetData on a texture with that data, rather than having to dispose the texture and recreate it entirely.
/// </remarks>
/// <param name="stream">The stream from which to read the image data.</param>
/// <param name="width">Outputs the width of the image.</param>
/// <param name="height">Outputs the height of the image.</param>
/// <param name="pixels">Outputs the pixel data of the image, in non-premultiplied RGBA format.</param>
/// <param name="requestedWidth">Preferred width of the resulting image data</param>
/// <param name="requestedHeight">Preferred height of the resulting image data</param>
/// <param name="zoom">false to maintain aspect ratio, true to crop image</param>
public static void TextureDataFromStreamEXT(
Stream stream,
out int width,
out int height,
out byte[] pixels,
int requestedWidth = -1,
int requestedHeight = -1,
bool zoom = false
)
{
if (stream.CanSeek && stream.Position == stream.Length)
{
stream.Seek(0, SeekOrigin.Begin);
}
int len;
IntPtr pixPtr = FNA3D.ReadImageStream(
stream,
out width,
out height,
out len,
requestedWidth,
requestedHeight,
zoom
);
pixels = new byte[len];
Marshal.Copy(pixPtr, pixels, 0, len);
FNA3D.FNA3D_Image_Free(pixPtr);
}
public static Texture2D FromStream(
GraphicsDevice graphicsDevice,
Stream stream,
int width,
int height,
bool zoom
)
{
if (stream.CanSeek && stream.Position == stream.Length)
{
stream.Seek(0, SeekOrigin.Begin);
}
int realWidth, realHeight, len;
IntPtr pixels = FNA3D.ReadImageStream(
stream,
out realWidth,
out realHeight,
out len,
width,
height,
zoom
);
Texture2D result = new Texture2D(
graphicsDevice,
realWidth,
realHeight
);
result.SetDataPointerEXT(
0,
null,
pixels,
len
);
FNA3D.FNA3D_Image_Free(pixels);
return(result);
}