public override void Export(Stream writeStream)
{
CheckStreamAndTexture(writeStream);
int width = (int)Texture.Width;
int height = (int)Texture.Height;
var builder = PngBuilder.Create(width, height, Texture.Format.HasAlpha());
var writer = new PngWriter(builder, width);
byte[] data = Texture.TexturePixels.Data.PrimaryRawImage;
if (SpecifyArray >= 0 && SpecifyArray < Texture.ArrayCount)
{
data = Texture.TexturePixels.Data.RawImage[SpecifyArray][0];
}
TextureUtil.DecodeTextureDataToWriter(data, width, height, Texture.Format, writer);
builder.Save(writeStream);
}
public static BitmapSource GetImage(Texture texture, int clampSize, int mode)
{
BitmapSource target = null;
int width = (int)texture.Width;
int height = (int)texture.Height;
int targetMipmap = 0;
int maxMipmap = texture.MipmapCount - 1;
while (clampSize != 0 && width > clampSize && height > clampSize && targetMipmap < maxMipmap)
{
width >>= 1;
height >>= 1;
targetMipmap++;
}
var key = Tuple.Create(texture, targetMipmap, mode);
lock (imageCache)
{
if (!imageCache.TryGetValue(key, out var weakRef) || !weakRef.TryGetTarget(out target))
{
if (++imageCacheCleanCounter > 100)
{
imageCacheCleanCounter = 0;
var removed = imageCache.Where(pair => !pair.Value.TryGetTarget(out var unused)).ToArray();
foreach (var item in removed)
{
imageCache.Remove(item.Key);
}
}
PixelFormat pf = PixelFormats.Default;
byte[] rawData = texture.TexturePixels.Data.RawImage[0][targetMipmap];
int stride = 0;
switch (mode)
{
case CHANNEL_MODE_RGBA:
pf = PixelFormats.Bgra32;
stride = width * 4;
break;
case CHANNEL_MODE_RGB:
pf = PixelFormats.Bgr24;
stride = width * 3;
break;
case CHANNEL_MODE_RG:
pf = PixelFormats.Bgr24;
stride = width * 3;
break;
case CHANNEL_MODE_R:
pf = PixelFormats.Gray8;
stride = width * 1;
break;
case CHANNEL_MODE_ALPHA:
pf = PixelFormats.Gray8;
stride = width * 1;
break;
default:
throw new ArgumentOutOfRangeException("mode");
}
byte[] rawImage = new byte[stride * height];
var writer = new ImageWriter(rawImage, width, mode);
TextureUtil.DecodeTextureDataToWriter(rawData, width, height, texture.Format, writer);
/*int length = width * height;
* for (int i = 0; i < length; i++)
* {
* rawImage[i * 4] = 255; // b
* rawImage[i * 4 + 1] = 127; // g
* rawImage[i * 4 + 2] = 63; // r
* rawImage[i * 4 + 3] = 255; // a
* }*/
target = BitmapSource.Create(width, height,
96, 96, pf, null,
rawImage, stride);
imageCache[key] = new WeakReference <BitmapSource>(target);
}
}
return(target);
}
