void ExecutableRender::execute( const Contexts &contexts ) const
{
const ScenePlug *scene = inPlug()->getInput<ScenePlug>();
if( !scene )
{
throw IECore::Exception( "No input scene" );
}
/// \todo This doesn't belong here. It'll be the responsibility of the Despatchers
/// to save the script if necessary, and to save it to an alternate location than
/// the current one.
scriptNode()->save();
for( Contexts::const_iterator it = contexts.begin(), eIt = contexts.end(); it != eIt; it++ )
{
Context::Scope scopedContext( it->get() );
ConstCompoundObjectPtr globals = scene->globalsPlug()->getValue();
createDisplayDirectories( globals );
IECore::RendererPtr renderer = createRenderer();
outputOptions( globals, renderer );
outputCamera( scene, globals, renderer );
{
WorldBlock world( renderer );
outputLights( scene, globals, renderer );
outputWorldProcedural( scene, renderer );
}
std::string systemCommand = command();
if( systemCommand.size() )
{
const ApplicationRoot *applicationRoot = scene->ancestor<ApplicationRoot>();
if( applicationRoot && applicationRoot->getName() == "gui" )
{
/// \todo We need this weird background execution behaviour because we
/// don't want to block the ui while rendering, but really the LocalDespatcher
/// should be responsible for launching a separate process to do the execution
/// from anyway.
systemCommand += "&";
}
system( systemCommand.c_str() );
}
}
}
///\todo: It seems that if a JPG is written with RGBA channels the output is wrong but it should be supported. Find out why and fix it.
/// There is a test case in ImageWriterTest which checks the output of the jpg writer against an incorrect image and it will fail if it is equal to the writer output.
void ImageWriter::execute( const Contexts &contexts ) const
{
if( !inPlug()->getInput<ImagePlug>() )
{
throw IECore::Exception( "No input image." );
}
// Loop over the execution contexts...
for( Contexts::const_iterator it = contexts.begin(), eIt = contexts.end(); it != eIt; it++ )
{
Context::Scope scopedContext( it->get() );
std::string fileName = fileNamePlug()->getValue();
fileName = (*it)->substitute( fileName );
boost::shared_ptr< ImageOutput > out( ImageOutput::create( fileName.c_str() ) );
if ( !out )
{
throw IECore::Exception( boost::str( boost::format( "Invalid filename: %s" ) % fileName ) );
}
// Grab the intersection of the channels from the "channels" plug and the image input to see which channels we are to write out.
IECore::ConstStringVectorDataPtr channelNamesData = inPlug()->channelNamesPlug()->getValue();
std::vector<std::string> maskChannels = channelNamesData->readable();
channelsPlug()->maskChannels( maskChannels );
const int nChannels = maskChannels.size();
// Get the image channel data.
IECore::ImagePrimitivePtr imagePtr( inPlug()->image() );
// Get the image's display window.
const Imath::Box2i displayWindow( imagePtr->getDisplayWindow() );
const int displayWindowWidth = displayWindow.size().x+1;
const int displayWindowHeight = displayWindow.size().y+1;
// Get the image's data window and if it then set a flag.
bool imageIsBlack = false;
Imath::Box2i dataWindow( imagePtr->getDataWindow() );
if ( inPlug()->dataWindowPlug()->getValue().isEmpty() )
{
dataWindow = displayWindow;
imageIsBlack = true;
}
int dataWindowWidth = dataWindow.size().x+1;
int dataWindowHeight = dataWindow.size().y+1;
// Create the image header.
ImageSpec spec( dataWindowWidth, dataWindowHeight, nChannels, TypeDesc::FLOAT );
// Add the channel names to the header whilst getting pointers to the channel data.
std::vector<const float*> channelPtrs;
spec.channelnames.clear();
for ( std::vector<std::string>::iterator channelIt( maskChannels.begin() ); channelIt != maskChannels.end(); channelIt++ )
{
spec.channelnames.push_back( *channelIt );
IECore::FloatVectorDataPtr dataPtr = imagePtr->getChannel<float>( *channelIt );
channelPtrs.push_back( &(dataPtr->readable()[0]) );
// OIIO has a special attribute for the Alpha and Z channels. If we find some, we should tag them...
if ( *channelIt == "A" )
{
spec.alpha_channel = channelIt-maskChannels.begin();
} else if ( *channelIt == "Z" )
{
spec.z_channel = channelIt-maskChannels.begin();
}
}
// Specify the display window.
spec.full_x = displayWindow.min.x;
spec.full_y = displayWindow.min.y;
spec.full_width = displayWindowWidth;
spec.full_height = displayWindowHeight;
spec.x = dataWindow.min.x;
spec.y = dataWindow.min.y;
if ( !out->open( fileName, spec ) )
{
throw IECore::Exception( boost::str( boost::format( "Could not open \"%s\", error = %s" ) % fileName % out->geterror() ) );
}
// Only allow tiled output if our file format supports it.
int writeMode = writeModePlug()->getValue() & out->supports( "tile" );
if ( writeMode == Scanline )
{
// Create a buffer for the scanline.
float scanline[ nChannels*dataWindowWidth ];
if ( imageIsBlack )
{
memset( scanline, 0, sizeof(float) * nChannels*dataWindowWidth );
for ( int y = spec.y; y < spec.y + dataWindowHeight; ++y )
{
if ( !out->write_scanline( y, 0, TypeDesc::FLOAT, &scanline[0] ) )
{
throw IECore::Exception( boost::str( boost::format( "Could not write scanline to \"%s\", error = %s" ) % fileName % out->geterror() ) );
}
}
}
else
{
// Interleave the channel data and write it by scanline to the file.
for ( int y = spec.y; y < spec.y + dataWindowHeight; ++y )
{
for ( std::vector<const float *>::iterator channelDataIt( channelPtrs.begin() ); channelDataIt != channelPtrs.end(); channelDataIt++ )
{
float *outPtr = &scanline[0] + (channelDataIt - channelPtrs.begin()); // The pointer that we are writing to.
// The row that we are reading from is flipped (in the Y) as we use a different image space internally to OpenEXR and OpenImageIO.
const float *inRowPtr = (*channelDataIt) + ( y - spec.y ) * dataWindowWidth;
const int inc = channelPtrs.size();
for ( int x = 0; x < dataWindowWidth; ++x, outPtr += inc )
{
*outPtr = *inRowPtr++;
}
}
if ( !out->write_scanline( y, 0, TypeDesc::FLOAT, &scanline[0] ) )
{
throw IECore::Exception( boost::str( boost::format( "Could not write scanline to \"%s\", error = %s" ) % fileName % out->geterror() ) );
}
}
}
}
// Tiled output
else
{
// Create a buffer for the tile.
const int tileSize = ImagePlug::tileSize();
float tile[ nChannels*tileSize*tileSize ];
if ( imageIsBlack )
{
memset( tile, 0, sizeof(float) * nChannels*tileSize*tileSize );
for ( int tileY = 0; tileY < dataWindowHeight; tileY += tileSize )
{
for ( int tileX = 0; tileX < dataWindowWidth; tileX += tileSize )
{
if ( !out->write_tile( tileX+dataWindow.min.x, tileY+spec.y, 0, TypeDesc::FLOAT, &tile[0] ) )
{
throw IECore::Exception( boost::str( boost::format( "Could not write tile to \"%s\", error = %s" ) % fileName % out->geterror() ) );
}
}
}
}
else
{
// Interleave the channel data and write it to the file tile-by-tile.
for ( int tileY = 0; tileY < dataWindowHeight; tileY += tileSize )
{
for ( int tileX = 0; tileX < dataWindowWidth; tileX += tileSize )
{
float *outPtr = &tile[0];
const int r = std::min( tileSize+tileX, dataWindowWidth );
const int t = std::min( tileSize+tileY, dataWindowHeight );
for ( int y = 0; y < t; ++y )
{
for ( std::vector<const float *>::iterator channelDataIt( channelPtrs.begin() ); channelDataIt != channelPtrs.end(); channelDataIt++ )
{
const int inc = channelPtrs.size();
const float *inRowPtr = (*channelDataIt) + ( tileY + t - y - 1 ) * dataWindowWidth;
for ( int x = 0; x < r; ++x, outPtr += inc )
{
*outPtr = *inRowPtr+(tileX+x);
}
}
}
if ( !out->write_tile( tileX+dataWindow.min.x, tileY+spec.y, 0, TypeDesc::FLOAT, &tile[0] ) )
{
throw IECore::Exception( boost::str( boost::format( "Could not write tile to \"%s\", error = %s" ) % fileName % out->geterror() ) );
}
}
}
}
}
out->close();
}
}