private TextureContent GenerateCubemap(TextureContent input, ContentProcessorContext context)
{
if (input.Faces[1].Count != 0)
{
//its already a cubemap
return base.Process(input, context);
}
TextureCubeContent cubeContent = new TextureCubeContent();
// Convert the input data to Color format, for ease of processing.
input.ConvertBitmapType(typeof(PixelBitmapContent<Color>));
int height = input.Faces[0][0].Height;
int width = input.Faces[0][0].Width / 6;
//split the image into 6 pieces, setup: X+,X-, Y+,Y-, Z+, Z-
cubeContent.Faces[(int)CubeMapFace.PositiveX] = CreateFace(input.Faces[0][0], width, height, 0);
cubeContent.Faces[(int)CubeMapFace.NegativeX] = CreateFace(input.Faces[0][0], width, height, width * 1);
cubeContent.Faces[(int)CubeMapFace.PositiveY] = CreateFace(input.Faces[0][0], width, height, width * 2);
cubeContent.Faces[(int)CubeMapFace.NegativeY] = CreateFace(input.Faces[0][0], width, height, width * 3);
cubeContent.Faces[(int)CubeMapFace.PositiveZ] = CreateFace(input.Faces[0][0], width, height, width * 4);
cubeContent.Faces[(int)CubeMapFace.NegativeZ] = CreateFace(input.Faces[0][0], width, height, width * 5);
// Calculate mipmap data.
cubeContent.GenerateMipmaps(true);
// Compress the cubemap into DXT1 format.
cubeContent.ConvertBitmapType(typeof(Dxt1BitmapContent));
return cubeContent;
}
