protected override void PlatformCompressTexture(ContentProcessorContext context, TextureContent content, TextureProcessorOutputFormat format, bool isSpriteFont)
{
format = GetTextureFormatForPlatform(format, context.TargetPlatform);
// Make sure we're in a floating point format
content.ConvertBitmapType(typeof(PixelBitmapContent <Vector4>));
switch (format)
{
case TextureProcessorOutputFormat.AtcCompressed:
GraphicsUtil.CompressAti(context, content, isSpriteFont);
break;
case TextureProcessorOutputFormat.Color16Bit:
GraphicsUtil.CompressColor16Bit(context, content);
break;
case TextureProcessorOutputFormat.DxtCompressed:
GraphicsUtil.CompressDxt(context, content, isSpriteFont);
break;
case TextureProcessorOutputFormat.Etc1Compressed:
GraphicsUtil.CompressEtc1(context, content, isSpriteFont);
break;
case TextureProcessorOutputFormat.PvrCompressed:
GraphicsUtil.CompressPvrtc(context, content, isSpriteFont);
break;
}
}
/// <summary>
/// Performs conversion of the texture content to the correct format.
/// </summary>
/// <param name="context">The processor context.</param>
/// <param name="content">The content to be compressed.</param>
/// <param name="format">The user requested format for compression.</param>
/// <param name="generateMipmaps">If mipmap generation is required.</param>
/// <param name="isSpriteFont">If the texture has represents a sprite font, i.e. is greyscale and has sharp black/white contrast.</param>
public void ConvertTexture(ContentProcessorContext context, TextureContent content, TextureProcessorOutputFormat format, bool generateMipmaps, bool isSpriteFont)
{
// We do nothing in this case.
if (format == TextureProcessorOutputFormat.NoChange)
{
return;
}
// If this is color just make sure the format is right and return it.
if (format == TextureProcessorOutputFormat.Color)
{
content.ConvertBitmapType(typeof(PixelBitmapContent <Color>));
if (generateMipmaps)
{
content.GenerateMipmaps(false);
}
return;
}
// Handle this common compression format.
if (format == TextureProcessorOutputFormat.Color16Bit)
{
GraphicsUtil.CompressColor16Bit(content, generateMipmaps);
return;
}
try
{
// All other formats require platform specific choices.
PlatformCompressTexture(context, content, format, generateMipmaps, isSpriteFont);
}
catch (EntryPointNotFoundException ex)
{
context.Logger.LogImportantMessage("Could not find the entry point to compress the texture. " + ex.ToString());
throw ex;
}
catch (DllNotFoundException ex)
{
context.Logger.LogImportantMessage("Could not compress texture. Required shared lib is missing. " + ex.ToString());
throw ex;
}
catch (Exception ex)
{
context.Logger.LogImportantMessage("Could not convert texture. " + ex.ToString());
throw ex;
}
}