/// <summary>
/// Switches the channels R and B.
/// </summary>
/// <param name="image">The image.</param>
/// <param name="libraryData">The library data.</param>
/// <param name="switchC">The switch request</param>
/// <remarks>
/// Some libraries can't handle BGRA order so we need to change it to RGBA.
/// </remarks>
private void SwitchChannels(TexImage image, FreeImageTextureLibraryData libraryData, SwitchingBRChannelsRequest switchC)
{
Log.Info("Switching channels R and G ...");
for (int i = 0; i < libraryData.Bitmaps.Length; ++i)
{
FIBITMAP blueChannel = FreeImage.GetChannel(libraryData.Bitmaps[i], FREE_IMAGE_COLOR_CHANNEL.FICC_BLUE);
FIBITMAP redChannel = FreeImage.GetChannel(libraryData.Bitmaps[i], FREE_IMAGE_COLOR_CHANNEL.FICC_RED);
FreeImage.SetChannel(libraryData.Bitmaps[i], redChannel, FREE_IMAGE_COLOR_CHANNEL.FICC_BLUE);
FreeImage.SetChannel(libraryData.Bitmaps[i], blueChannel, FREE_IMAGE_COLOR_CHANNEL.FICC_RED);
FreeImage.Unload(blueChannel);
FreeImage.Unload(redChannel);
}
if (image.Format.IsInBGRAOrder())
image.Format = PixelFormat.R8G8B8A8_UNorm;
else
image.Format = PixelFormat.B8G8R8A8_UNorm;
}
/// <summary>
/// Switches the channels R and B.
/// </summary>
/// <param name="image">The image.</param>
/// <param name="libraryData">The library data.</param>
/// <param name="request">The request.</param>
/// <exception cref="TexLibraryException">Unsuported format for channel switching.</exception>
private void SwitchChannels(TexImage image, PvrTextureLibraryData libraryData, SwitchingBRChannelsRequest request)
{
Log.Info("Switching channels B and R ...");
switch (image.Format)
{
case SiliconStudio.Paradox.Graphics.PixelFormat.B8G8R8A8_UNorm:
image.Format = SiliconStudio.Paradox.Graphics.PixelFormat.R8G8B8A8_UNorm; break;
case SiliconStudio.Paradox.Graphics.PixelFormat.B8G8R8A8_Typeless:
image.Format = SiliconStudio.Paradox.Graphics.PixelFormat.R8G8B8A8_Typeless; break;
case SiliconStudio.Paradox.Graphics.PixelFormat.B8G8R8A8_UNorm_SRgb:
image.Format = SiliconStudio.Paradox.Graphics.PixelFormat.R8G8B8A8_UNorm_SRgb; break;
case SiliconStudio.Paradox.Graphics.PixelFormat.R8G8B8A8_Typeless:
image.Format = SiliconStudio.Paradox.Graphics.PixelFormat.B8G8R8A8_Typeless; break;
case SiliconStudio.Paradox.Graphics.PixelFormat.R8G8B8A8_UNorm:
image.Format = SiliconStudio.Paradox.Graphics.PixelFormat.B8G8R8A8_UNorm; break;
case SiliconStudio.Paradox.Graphics.PixelFormat.R8G8B8A8_UNorm_SRgb:
image.Format = SiliconStudio.Paradox.Graphics.PixelFormat.B8G8R8A8_UNorm_SRgb; break;
default:
Log.Error("Unsuported format for channel switching.");
throw new TextureToolsException("Unsuported format for channel switching.");
}
PVRTexture textureTemp = new PVRTexture(libraryData.Header, libraryData.Texture.GetDataPtr());
EChannelName e1 = EChannelName.eBlue;
EChannelName e2 = EChannelName.eRed;
Utilities.CopyChannels(libraryData.Texture, textureTemp, 1, out e1, out e2);
Utilities.CopyChannels(libraryData.Texture, textureTemp, 1, out e2, out e1);
textureTemp.Dispose();
UpdateImage(image, libraryData);
}