/// <summary>
/// Loads texture image from stream</summary>
/// <param name="imageStream">Stream holding texture image</param>
/// <returns>Texture image</returns>
public Image LoadImage(Stream imageStream)
{
TgaHeader header;
byte[] pixels;
using (BinaryReader reader = new BinaryReader(imageStream))
{
header = ReadHeader(reader);
ImageDataType dataType = (ImageDataType)header.dataType;
switch ((ImageDataType)header.dataType)
{
case ImageDataType.UncompressedUnmappedColor:
case ImageDataType.RleCompressedUnmappedColor:
case ImageDataType.UncompressedMappedColor:
break;
default:
throw new NotImplementedException("Unsupported Targa image type '" + dataType.ToString() + "'");
}
ReadIdString(reader, header);
byte[] colorMap = ReadColorMap(reader, header);
pixels = ReadPixels(reader, header, colorMap);
}
int pixelFormat = CalculateOpenGlPixelFormat(header);
int elementsPerPixel = GetPixelDepth(header) / 8;
return(new Image(header.imageWidth, header.imageHeight, pixels, 1, pixelFormat, elementsPerPixel));
}
