void Texture::SurfaceChannelOrderToDataFormatAndType( const SurfaceChannelOrder &sco, GLint *dataFormat, GLenum *type )
{
switch( sco.getCode() ) {
case SurfaceChannelOrder::RGB:
*dataFormat = GL_RGB;
*type = GL_UNSIGNED_BYTE;
break;
case SurfaceChannelOrder::RGBA:
case SurfaceChannelOrder::RGBX:
*dataFormat = GL_RGBA;
*type = GL_UNSIGNED_BYTE;
break;
case SurfaceChannelOrder::BGRA:
case SurfaceChannelOrder::BGRX:
*dataFormat = GL_BGRA;
*type = GL_UNSIGNED_BYTE;
break;
#if ! defined( CINDER_GLES )
case SurfaceChannelOrder::BGR:
*dataFormat = GL_BGR;
*type = GL_UNSIGNED_BYTE;
break;
case SurfaceChannelOrder::ARGB:
*dataFormat = GL_BGRA;
*type = GL_UNSIGNED_INT_8_8_8_8;
break;
#endif // ! defined( CINDER_GLES )
default:
throw TextureDataExc( "Invalid channel order" ); // this is an unsupported channel order for a texture
break;
}
}
Gdiplus::PixelFormat surfaceChannelOrderToGdiplusPixelFormat( const SurfaceChannelOrder &sco, bool premultiplied )
{
switch( sco.getCode() ) {
case SurfaceChannelOrder::BGR:
return PixelFormat24bppRGB;
break;
case SurfaceChannelOrder::BGRX: // untested code path
return PixelFormat32bppRGB;
break;
case SurfaceChannelOrder::BGRA:
return ( premultiplied ) ? PixelFormat32bppPARGB : PixelFormat32bppARGB;
break;
default:
return PixelFormatUndefined;
}
}