/// <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);
}
/// <summary>
/// Exports the specified image.
/// </summary>
/// <param name="image">The image.</param>
/// <param name="libraryData">The library data.</param>
/// <param name="export">The export request.</param>
private void Export(TexImage image, PvrTextureLibraryData libraryData, ExportRequest request)
{
Log.Info("Exporting to " + request.FilePath + " ...");
if (request.MinimumMipMapSize > 1) // if a mimimun mipmap size was requested
{
int newMipMapCount = image.MipmapCount;
for (int i = image.MipmapCount - 1; i > 0; --i) // looking for the mipmap level corresponding to the minimum size requeted.
{
if (libraryData.Header.GetWidth((uint)i) >= request.MinimumMipMapSize || libraryData.Header.GetHeight((uint)i) >= request.MinimumMipMapSize)
{
break;
}
--newMipMapCount;
}
// Creating a new texture corresponding to the requested mipmap levels
PVRTextureHeader header = new PVRTextureHeader(RetrieveNativeFormat(image.Format), image.Height, image.Width, image.Depth, newMipMapCount, image.ArraySize, image.FaceCount);
PVRTexture texture = new PVRTexture(header, IntPtr.Zero);
try
{
for (uint i = 0; i < image.FaceCount; ++i)
{
for (uint j = 0; j < image.ArraySize; ++j)
{
for (uint k = 0; k < newMipMapCount; ++k)
{
Core.Utilities.CopyMemory(texture.GetDataPtr(k, j, i), libraryData.Texture.GetDataPtr(k, j, i), (int)libraryData.Header.GetDataSize((int)k, false, false));
}
}
}
}
catch (AccessViolationException e)
{
texture.Dispose();
Log.Error("Failed to export texture with the mipmap minimum size request. ", e);
throw new TextureToolsException("Failed to export texture with the mipmap minimum size request. ", e);
}
// Saving the texture into a file and deleting it
texture.Save(request.FilePath);
texture.Dispose();
}
else
{
libraryData.Texture.Save(request.FilePath);
}
image.Save(request.FilePath);
}