/// <summary>
/// Initializes a new DirectXTexture class.
/// </summary>
/// <param name="bmp">The Bitmap.</param>
internal DirectXTexture(System.Drawing.Bitmap bmp)
{
RawBitmap = (System.Drawing.Bitmap)bmp.Clone();
_width = bmp.Width;
_height = bmp.Height;
var sourceArea = new Rectangle(0, 0, bmp.Width, bmp.Height);
var bitmapProperties = new BitmapProperties
{
PixelFormat = new PixelFormat(Format.R8G8B8A8_UNorm, AlphaMode.Premultiplied),
HorizontalDpi = 96,
VerticalDpi = 96
};
var size = new Size(bmp.Width, bmp.Height);
int stride = bmp.Width * sizeof(int);
using (var tempStream = new DataStream(bmp.Height * stride, true, true))
{
BitmapData bitmapData = bmp.LockBits(sourceArea, ImageLockMode.ReadOnly,
System.Drawing.Imaging.PixelFormat.Format32bppPArgb);
for (int y = 0; y < bmp.Height; y++)
{
int offset = bitmapData.Stride * y;
for (int x = 0; x < bmp.Width; x++)
{
byte b = Marshal.ReadByte(bitmapData.Scan0, offset++);
byte g = Marshal.ReadByte(bitmapData.Scan0, offset++);
byte r = Marshal.ReadByte(bitmapData.Scan0, offset++);
byte a = Marshal.ReadByte(bitmapData.Scan0, offset++);
int rgba = r | (g << 8) | (b << 16) | (a << 24);
tempStream.Write(rgba);
}
}
bmp.UnlockBits(bitmapData);
tempStream.Position = 0;
_bmp = new Bitmap(DirectXHelper.RenderTarget, size, tempStream, stride, bitmapProperties);
}
}
public Bitmap GetBitmap(string image)
{
Bitmap bitmap;
bitmaps.TryGetValue(image, out bitmap);
if (null == bitmap)
{
using (System.Drawing.Bitmap source = new System.Drawing.Bitmap(Path.Combine("Assets", image)))
{
System.Drawing.Imaging.BitmapData sourceData = source.LockBits(
new Rectangle(0, 0, source.Width, source.Height),
System.Drawing.Imaging.ImageLockMode.ReadOnly,
System.Drawing.Imaging.PixelFormat.Format32bppPArgb
);
using (DataStream dataStream = new DataStream(sourceData.Scan0, sourceData.Stride * sourceData.Height, true, false))
{
bitmap = new Bitmap(renderTarget, new Size(source.Width, source.Height), dataStream, sourceData.Stride, bitmapProperties);
bitmaps[image] = bitmap;
}
source.UnlockBits(sourceData);
}
}
return bitmap;
}
