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Cycles : Enable OpenImageDenoise + Viewport support #5343

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1 change: 1 addition & 0 deletions Changes.md
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Original file line number Diff line number Diff line change
Expand Up @@ -34,6 +34,7 @@ Improvements
- Improved numerical accuracy.
- Improved performance.
- VectorDataPlugValueWidget : Computation errors are now reflected by a red background colour.
- Cycles : Added OpenImageDenoise support.

Fixes
-----
Expand Down
6 changes: 4 additions & 2 deletions SConstruct
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Expand Up @@ -1275,14 +1275,15 @@ libraries = {
"cycles_session", "cycles_scene", "cycles_graph", "cycles_bvh", "cycles_device", "cycles_kernel", "cycles_kernel_osl",
"cycles_integrator", "cycles_util", "cycles_subd", "extern_sky",
"OpenImageIO$OIIO_LIB_SUFFIX", "OpenImageIO_Util$OIIO_LIB_SUFFIX", "oslexec$OSL_LIB_SUFFIX", "oslquery$OSL_LIB_SUFFIX",
"openvdb$VDB_LIB_SUFFIX", "Alembic", "osdCPU", "OpenColorIO$OCIO_LIB_SUFFIX", "embree3", "Iex", "openpgl",
"openvdb$VDB_LIB_SUFFIX", "Alembic", "osdCPU", "OpenColorIO$OCIO_LIB_SUFFIX", "embree3", "Iex", "openpgl", "OpenImageDenoise",
],
"CXXFLAGS" : [ systemIncludeArgument, "$CYCLES_ROOT/include" ],
"CPPDEFINES" : [
( "CCL_NAMESPACE_BEGIN", "namespace ccl {" ),
( "CCL_NAMESPACE_END", "}" ),
( "WITH_OSL", "1" ),
( "WITH_CYCLES_PATH_GUIDING", "1" ),
( "WITH_OPENIMAGEDENOISE", "1" ),
],
"FRAMEWORKS" : [ "Foundation", "Metal", "IOKit" ],
},
Expand All @@ -1293,13 +1294,14 @@ libraries = {
"cycles_session", "cycles_scene", "cycles_graph", "cycles_bvh", "cycles_device", "cycles_kernel", "cycles_kernel_osl",
"cycles_integrator", "cycles_util", "cycles_subd", "extern_sky",
"OpenImageIO$OIIO_LIB_SUFFIX", "OpenImageIO_Util$OIIO_LIB_SUFFIX", "oslexec$OSL_LIB_SUFFIX", "openvdb$VDB_LIB_SUFFIX",
"oslquery$OSL_LIB_SUFFIX", "Alembic", "osdCPU", "OpenColorIO$OCIO_LIB_SUFFIX", "embree3", "Iex", "openpgl",
"oslquery$OSL_LIB_SUFFIX", "Alembic", "osdCPU", "OpenColorIO$OCIO_LIB_SUFFIX", "embree3", "Iex", "openpgl", "OpenImageDenoise",
],
"CXXFLAGS" : [ systemIncludeArgument, "$CYCLES_ROOT/include" ],
"CPPDEFINES" : [
( "CCL_NAMESPACE_BEGIN", "namespace ccl {" ),
( "CCL_NAMESPACE_END", "}" ),
( "WITH_CYCLES_PATH_GUIDING", "1" ),
( "WITH_OPENIMAGEDENOISE", "1" ),
],
},
"requiredOptions" : [ "CYCLES_ROOT" ],
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15 changes: 15 additions & 0 deletions python/GafferCyclesUI/CyclesOptionsUI.py
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Expand Up @@ -246,6 +246,9 @@ def __denoisingSummary( plug ) :

info = []

if plug["useDenoise"]["enabled"].getValue() :
info.append( "Use Denoising {}".format( plug["useDenoise"]["value"].getValue() ) )

if plug["denoiserType"]["enabled"].getValue() :
info.append( "Denoise Type {}".format( plug["denoiserType"]["value"].getValue() ) )

Expand Down Expand Up @@ -1370,6 +1373,18 @@ def __devicesPreset() :

# Denoising

"options.useDenoise" : [

"description",
"""
Enable the Denoiser.
""",

"layout:section", "Denoising",
"label", "Use Denoising",

],

"options.denoiserType" : [

"description",
Expand Down
1 change: 1 addition & 0 deletions src/GafferCycles/CyclesOptions.cpp
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Expand Up @@ -116,6 +116,7 @@ CyclesOptions::CyclesOptions( const std::string &name )

options->addChild( new Gaffer::NameValuePlug( "cycles:integrator:sampling_pattern", new IECore::StringData( "sobol" ), false, "samplingPattern" ) );

options->addChild( new Gaffer::NameValuePlug( "cycles:integrator:use_denoise", new IECore::BoolData( false ), false, "useDenoise" ) );
options->addChild( new Gaffer::NameValuePlug( "cycles:integrator:denoiser_type", new IECore::StringData( "openimagedenoise" ), false, "denoiserType" ) );
options->addChild( new Gaffer::NameValuePlug( "cycles:integrator:denoise_start_sample", new IECore::IntData( 0 ), false, "denoiseStartSample" ) );
options->addChild( new Gaffer::NameValuePlug( "cycles:integrator:use_denoise_pass_albedo", new IECore::BoolData( true ), false, "useDenoisePassAlbedo" ) );
Expand Down
30 changes: 21 additions & 9 deletions src/GafferCycles/IECoreCyclesPreview/Renderer.cpp
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Expand Up @@ -293,18 +293,17 @@ class CyclesOutput : public IECore::RefCounted
public :

CyclesOutput( const ccl::Session *session, const IECore::InternedString &name, const IECoreScene::Output *output )
: m_passType( ccl::PASS_NONE ), m_denoise( false ), m_interactive( false ), m_lightgroup( false )
: m_passType( ccl::PASS_NONE ), m_denoise( false ), m_interactive( false ), m_viewport( false ), m_lightgroup( false )
{
m_parameters = output->parametersData()->copy();
CompoundDataMap &p = m_parameters->writable();

p["path"] = new StringData( output->getName() );
p["driver"] = new StringData( output->getType() );

if( output->getType() == "ieDisplay" )
m_interactive = true;

m_interactive = output->getType() == "ieDisplay" ? true : false;
m_denoise = parameter<bool>( output->parameters(), "denoise", false );
m_viewport = parameter<string>( output->parameters(), "driverType", "" ) == "OutputBuffer::DisplayDriver" ? true : false;

const ccl::NodeEnum &typeEnum = *ccl::Pass::get_type_enum();
ccl::ustring passType;
Expand Down Expand Up @@ -385,6 +384,7 @@ class CyclesOutput : public IECore::RefCounted
std::string m_data;
bool m_denoise;
bool m_interactive;
bool m_viewport;
bool m_lightgroup;
};

Expand Down Expand Up @@ -2477,6 +2477,7 @@ IECore::InternedString g_backgroundShaderOptionName( "cycles:background:shader"
//
IECore::InternedString g_useFrameAsSeedOptionName( "cycles:integrator:useFrameAsSeed" );
IECore::InternedString g_seedOptionName( "cycles:integrator:seed" );
IECore::InternedString g_useDenoiseOptionName( "cycles:integrator:use_denoise" );

ccl::PathRayFlag nameToRayType( const std::string &name )
{
Expand Down Expand Up @@ -3055,6 +3056,12 @@ class CyclesRenderer final : public IECoreScenePreview::Renderer
{
integrator->set_default_value( *input );
}

if( name == g_useDenoiseOptionName )
{
m_outputsChanged = true;
}

return;
}
else if( boost::starts_with( name.string(), "cycles:" ) )
Expand Down Expand Up @@ -3528,7 +3535,6 @@ class CyclesRenderer final : public IECoreScenePreview::Renderer
InternedString cryptoObject;
InternedString cryptoMaterial;
bool hasShadowCatcher = false;
bool hasDenoise = false;
for( auto &coutput : m_outputs )
{
if( ( m_renderType != Interactive && coutput.second->m_interactive ) ||
Expand Down Expand Up @@ -3569,12 +3575,20 @@ class CyclesRenderer final : public IECoreScenePreview::Renderer
}

bool denoise = coutput.second->m_denoise;
hasDenoise |= denoise;
std::string name = denoise ? ccl::string_printf( "%s_denoised", coutput.second->m_data.c_str() ) : coutput.second->m_data;
ccl::Pass *pass = m_scene->create_node<ccl::Pass>();
pass->set_type( passType );
pass->set_name( ccl::ustring( name ) );
pass->set_mode( denoise ? ccl::PassMode::DENOISED : ccl::PassMode::NOISY );

// Allow the viewport to have a denoiser applied to default rgba pass.
if( m_scene->integrator->get_use_denoise() && passType == ccl::PASS_COMBINED && coutput.second->m_viewport )
{
pass->set_mode( ccl::PassMode::DENOISED );
}
else
{
pass->set_mode( denoise ? ccl::PassMode::DENOISED : ccl::PassMode::NOISY );
}

const IECore::CompoundDataPtr layer = coutput.second->m_parameters->copy();
layersData->writable()[name] = layer;
Expand Down Expand Up @@ -3655,7 +3669,6 @@ class CyclesRenderer final : public IECoreScenePreview::Renderer
continue;

bool denoise = coutput.second->m_denoise;
hasDenoise |= denoise;
std::string name = denoise ? ccl::string_printf( "%s_denoised", coutput.second->m_data.c_str() ) : coutput.second->m_data;
ccl::Pass *pass = m_scene->create_node<ccl::Pass>();
pass->set_type( passType );
Expand All @@ -3681,7 +3694,6 @@ class CyclesRenderer final : public IECoreScenePreview::Renderer

film->set_cryptomatte_passes( crypto );
film->set_use_approximate_shadow_catcher( !hasShadowCatcher );
m_scene->integrator->set_use_denoise( hasDenoise );
if( m_renderType == Interactive )
m_session->set_output_driver( ccl::make_unique<IEDisplayOutputDriver>( displayWindow, dataWindow, paramData ) );
else
Expand Down
56 changes: 50 additions & 6 deletions startup/gui/cyclesViewerSettings.gfr
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Expand Up @@ -8,7 +8,7 @@ import imath

Gaffer.Metadata.registerValue( parent, "serialiser:milestoneVersion", 1, persistent=False )
Gaffer.Metadata.registerValue( parent, "serialiser:majorVersion", 1, persistent=False )
Gaffer.Metadata.registerValue( parent, "serialiser:minorVersion", 0, persistent=False )
Gaffer.Metadata.registerValue( parent, "serialiser:minorVersion", 2, persistent=False )
Gaffer.Metadata.registerValue( parent, "serialiser:patchVersion", 0, persistent=False )

__children = {}
Expand Down Expand Up @@ -113,7 +113,12 @@ __children["ViewerSettings"]["convert_float_to_vector"].addChild( Gaffer.V2fPlug
__children["ViewerSettings"].addChild( GafferCycles.CyclesShader( "attribute" ) )
__children["ViewerSettings"]["attribute"].loadShader( "attribute" )
__children["ViewerSettings"]["attribute"].addChild( Gaffer.V2fPlug( "__uiPosition", defaultValue = imath.V2f( 0, 0 ), flags = Gaffer.Plug.Flags.Default | Gaffer.Plug.Flags.Dynamic, ) )
parent["variables"]["imageCataloguePort"]["value"].setValue( 46035 )
__children["ViewerSettings"].addChild( Gaffer.NameValuePlug( "cycles:session:samples", Gaffer.IntPlug( "value", defaultValue = 64, ), False, "options_samples", Gaffer.Plug.Flags.Default | Gaffer.Plug.Flags.Dynamic ) )
__children["ViewerSettings"].addChild( GafferCycles.CyclesOptions( "DenoiseOptions" ) )
__children["ViewerSettings"]["DenoiseOptions"].addChild( Gaffer.V2fPlug( "__uiPosition", defaultValue = imath.V2f( 0, 0 ), flags = Gaffer.Plug.Flags.Default | Gaffer.Plug.Flags.Dynamic, ) )
__children["ViewerSettings"].addChild( Gaffer.NameValuePlug( "cycles:integrator:denoise_start_sample", Gaffer.IntPlug( "value", defaultValue = 8, ), False, "options_denoiseStartSample", Gaffer.Plug.Flags.Default | Gaffer.Plug.Flags.Dynamic ) )
__children["ViewerSettings"].addChild( Gaffer.BoolPlug( "EnableDenoiser", defaultValue = False, flags = Gaffer.Plug.Flags.Default | Gaffer.Plug.Flags.Dynamic, ) )
parent["variables"]["imageCataloguePort"]["value"].setValue( 43867 )
Gaffer.Metadata.registerValue( parent["variables"]["imageCataloguePort"], 'readOnly', True )
Gaffer.Metadata.registerValue( parent["variables"]["projectName"]["name"], 'readOnly', True )
Gaffer.Metadata.registerValue( parent["variables"]["projectRootDirectory"]["name"], 'readOnly', True )
Expand All @@ -123,7 +128,7 @@ Gaffer.Metadata.registerValue( __children["ViewerSettings"], 'noduleLayout:custo
Gaffer.Metadata.registerValue( __children["ViewerSettings"], 'noduleLayout:customGadget:addButtonRight:visible', False )
Gaffer.Metadata.registerValue( __children["ViewerSettings"], 'uiEditor:emptySections', IECore.StringVectorData( [ ] ) )
Gaffer.Metadata.registerValue( __children["ViewerSettings"], 'uiEditor:emptySectionIndices', IECore.IntVectorData( [ ] ) )
__children["ViewerSettings"]["__uiPosition"].setValue( imath.V2f( -8.1733408, 7.41429186 ) )
__children["ViewerSettings"]["__uiPosition"].setValue( imath.V2f( -7.47334099, 11.5142927 ) )
__children["ViewerSettings"]["BoxIn"]["__in"].setInput( __children["ViewerSettings"]["in"] )
Gaffer.Metadata.registerValue( __children["ViewerSettings"]["BoxIn"]["__in"], 'nodule:color', imath.Color3f( 0.240099996, 0.339399993, 0.485000014 ) )
Gaffer.Metadata.registerValue( __children["ViewerSettings"]["BoxIn"]["__in"], 'layout:section', 'Settings' )
Expand Down Expand Up @@ -227,13 +232,12 @@ __children["ViewerSettings"]["DisableDisplacement"]["__uiPosition"].setValue( im
__children["ViewerSettings"]["Expression3"]["__in"]["p0"].setInput( __children["ViewerSettings"]["enableDisplacement"] )
__children["ViewerSettings"]["Expression3"]["__uiPosition"].setValue( imath.V2f( -16.1448822, -112.487854 ) )
__children["ViewerSettings"]["SamplingOptions"]["in"].setInput( __children["ViewerSettings"]["DisableDisplacement"]["out"] )
__children["ViewerSettings"]["SamplingOptions"]["options"]["samples"]["value"].setValue( 64 )
__children["ViewerSettings"]["SamplingOptions"]["options"]["samples"]["enabled"].setValue( True )
__children["ViewerSettings"]["SamplingOptions"]["options"]["causticsReflective"]["value"].setValue( False )
__children["ViewerSettings"]["SamplingOptions"]["options"]["causticsReflective"]["enabled"].setValue( True )
__children["ViewerSettings"]["SamplingOptions"]["options"]["causticsRefractive"]["value"].setValue( False )
__children["ViewerSettings"]["SamplingOptions"]["options"]["causticsRefractive"]["enabled"].setValue( True )
__children["ViewerSettings"]["SamplingOptions"]["options"]["useAdaptiveSampling"]["enabled"].setValue( True )
__children["ViewerSettings"]["SamplingOptions"]["options"]["samples"].setInput( __children["ViewerSettings"]["options_samples"] )
__children["ViewerSettings"]["SamplingOptions"]["__uiPosition"].setValue( imath.V2f( -4.19273949, -124.976883 ) )
Gaffer.Metadata.registerValue( __children["ViewerSettings"]["DisableSubdivision"], 'annotation:user:text', 'For now subdivision is always disabled as Cycles out of the box only can support adaptive, Blender normally supplies an already uniform subdivided model from a modifier.' )
Gaffer.Metadata.registerValue( __children["ViewerSettings"]["DisableSubdivision"], 'annotation:user:color', imath.Color3f( 0.150000006, 0.25999999, 0.25999999 ) )
Expand All @@ -256,7 +260,9 @@ Gaffer.Metadata.registerValue( __children["ViewerSettings"]["shadingSystem"], 'n
Gaffer.Metadata.registerValue( __children["ViewerSettings"]["shadingSystem"], 'plugValueWidget:type', 'GafferUI.PresetsPlugValueWidget' )
Gaffer.Metadata.registerValue( __children["ViewerSettings"]["shadingSystem"], 'preset:OSL', 'OSL' )
Gaffer.Metadata.registerValue( __children["ViewerSettings"]["shadingSystem"], 'preset:SVM', 'SVM' )
__children["ViewerSettings"]["CyclesOptions"]["in"].setInput( __children["ViewerSettings"]["ShadingSystem"]["out"] )
Gaffer.Metadata.registerValue( __children["ViewerSettings"]["shadingSystem"], 'layout:section', 'Settings' )
Gaffer.Metadata.registerValue( __children["ViewerSettings"]["shadingSystem"], 'layout:index', 5 )
__children["ViewerSettings"]["CyclesOptions"]["in"].setInput( __children["ViewerSettings"]["DenoiseOptions"]["out"] )
__children["ViewerSettings"]["CyclesOptions"]["options"]["textureLimit"]["enabled"].setValue( True )
__children["ViewerSettings"]["CyclesOptions"]["options"]["textureLimit"]["value"].setInput( __children["ViewerSettings"]["Expression5"]["__out"]["p0"] )
__children["ViewerSettings"]["CyclesOptions"]["__uiPosition"].setValue( imath.V2f( -4.19273949, -151.521561 ) )
Expand All @@ -272,6 +278,8 @@ Gaffer.Metadata.registerValue( __children["ViewerSettings"]["textureSizeLimit"],
Gaffer.Metadata.registerValue( __children["ViewerSettings"]["textureSizeLimit"], 'preset:2048', 5 )
Gaffer.Metadata.registerValue( __children["ViewerSettings"]["textureSizeLimit"], 'preset:4096', 6 )
Gaffer.Metadata.registerValue( __children["ViewerSettings"]["textureSizeLimit"], 'preset:8192', 7 )
Gaffer.Metadata.registerValue( __children["ViewerSettings"]["textureSizeLimit"], 'layout:section', 'Settings' )
Gaffer.Metadata.registerValue( __children["ViewerSettings"]["textureSizeLimit"], 'layout:index', 6 )
__children["ViewerSettings"]["object_info"]["__uiPosition"].setValue( imath.V2f( -69.403717, 17.8482647 ) )
__children["ViewerSettings"]["diffuse_bsdf"]["parameters"]["color"].setInput( __children["ViewerSettings"]["object_info"]["out"]["color"] )
__children["ViewerSettings"]["diffuse_bsdf"]["__uiPosition"].setValue( imath.V2f( 17.4492283, 17.8482647 ) )
Expand All @@ -296,6 +304,42 @@ __children["ViewerSettings"]["convert_float_to_vector"]["parameters"]["value_flo
__children["ViewerSettings"]["convert_float_to_vector"]["__uiPosition"].setValue( imath.V2f( -72.9163971, -6.86891985 ) )
__children["ViewerSettings"]["attribute"]["parameters"]["attribute"].setValue( 'Cs' )
__children["ViewerSettings"]["attribute"]["__uiPosition"].setValue( imath.V2f( -69.4365692, 27.8806839 ) )
Gaffer.Metadata.registerValue( __children["ViewerSettings"]["options_samples"], 'spreadsheet:plugMenu:includeAsAncestor', True )
Gaffer.Metadata.registerValue( __children["ViewerSettings"]["options_samples"], 'spreadsheet:plugMenu:ancestorLabel', 'Value and Switch' )
Gaffer.Metadata.registerValue( __children["ViewerSettings"]["options_samples"], 'spreadsheet:columnName', 'samples' )
Gaffer.Metadata.registerValue( __children["ViewerSettings"]["options_samples"], 'nameValuePlugPlugValueWidget:ignoreNamePlug', True )
Gaffer.Metadata.registerValue( __children["ViewerSettings"]["options_samples"], 'description', 'Number of samples to render for each pixel. This is for the\npath integrator, use the other sampling parameters for the\nbranched-path integrator.' )
Gaffer.Metadata.registerValue( __children["ViewerSettings"]["options_samples"], 'label', 'Samples' )
Gaffer.Metadata.registerValue( __children["ViewerSettings"]["options_samples"], 'deletable', False )
Gaffer.Metadata.registerValue( __children["ViewerSettings"]["options_samples"], 'layout:section', 'Settings' )
Gaffer.Metadata.registerValue( __children["ViewerSettings"]["options_samples"], 'layout:index', 7 )
Gaffer.Metadata.registerValue( __children["ViewerSettings"]["options_samples"]["value"], 'spreadsheet:columnName', 'samplesValue' )
Gaffer.Metadata.registerValue( __children["ViewerSettings"]["options_samples"]["enabled"], 'spreadsheet:columnName', 'samplesEnabled' )
__children["ViewerSettings"]["DenoiseOptions"]["enabled"].setInput( __children["ViewerSettings"]["EnableDenoiser"] )
__children["ViewerSettings"]["DenoiseOptions"]["in"].setInput( __children["ViewerSettings"]["ShadingSystem"]["out"] )
__children["ViewerSettings"]["DenoiseOptions"]["options"]["useDenoise"]["value"].setValue( True )
__children["ViewerSettings"]["DenoiseOptions"]["options"]["useDenoise"]["enabled"].setValue( True )
__children["ViewerSettings"]["DenoiseOptions"]["options"]["denoiserType"]["enabled"].setValue( True )
__children["ViewerSettings"]["DenoiseOptions"]["options"]["useDenoisePassAlbedo"]["enabled"].setValue( True )
__children["ViewerSettings"]["DenoiseOptions"]["options"]["useDenoisePassNormal"]["enabled"].setValue( True )
__children["ViewerSettings"]["DenoiseOptions"]["options"]["denoiserPrefilter"]["value"].setValue( 'fast' )
__children["ViewerSettings"]["DenoiseOptions"]["options"]["denoiserPrefilter"]["enabled"].setValue( True )
__children["ViewerSettings"]["DenoiseOptions"]["options"]["denoiseStartSample"].setInput( __children["ViewerSettings"]["options_denoiseStartSample"] )
__children["ViewerSettings"]["DenoiseOptions"]["__uiPosition"].setValue( imath.V2f( -4.19273949, -143.357498 ) )
Gaffer.Metadata.registerValue( __children["ViewerSettings"]["options_denoiseStartSample"], 'spreadsheet:plugMenu:includeAsAncestor', True )
Gaffer.Metadata.registerValue( __children["ViewerSettings"]["options_denoiseStartSample"], 'spreadsheet:plugMenu:ancestorLabel', 'Value and Switch' )
Gaffer.Metadata.registerValue( __children["ViewerSettings"]["options_denoiseStartSample"], 'spreadsheet:columnName', 'denoiseStartSample' )
Gaffer.Metadata.registerValue( __children["ViewerSettings"]["options_denoiseStartSample"], 'nameValuePlugPlugValueWidget:ignoreNamePlug', True )
Gaffer.Metadata.registerValue( __children["ViewerSettings"]["options_denoiseStartSample"], 'description', 'Sample to start denoising the preview at.' )
Gaffer.Metadata.registerValue( __children["ViewerSettings"]["options_denoiseStartSample"], 'label', 'Denoising Start Sample' )
Gaffer.Metadata.registerValue( __children["ViewerSettings"]["options_denoiseStartSample"], 'deletable', False )
Gaffer.Metadata.registerValue( __children["ViewerSettings"]["options_denoiseStartSample"], 'layout:section', 'Settings' )
Gaffer.Metadata.registerValue( __children["ViewerSettings"]["options_denoiseStartSample"], 'layout:index', 9 )
Gaffer.Metadata.registerValue( __children["ViewerSettings"]["options_denoiseStartSample"]["value"], 'spreadsheet:columnName', 'denoiseStartSampleValue' )
Gaffer.Metadata.registerValue( __children["ViewerSettings"]["options_denoiseStartSample"]["enabled"], 'spreadsheet:columnName', 'denoiseStartSampleEnabled' )
Gaffer.Metadata.registerValue( __children["ViewerSettings"]["EnableDenoiser"], 'nodule:type', '' )
Gaffer.Metadata.registerValue( __children["ViewerSettings"]["EnableDenoiser"], 'layout:section', 'Settings' )
Gaffer.Metadata.registerValue( __children["ViewerSettings"]["EnableDenoiser"], 'layout:index', 8 )
__children["ViewerSettings"]["Expression3"]["__engine"].setValue( 'OSL' )
__children["ViewerSettings"]["Expression3"]["__expression"].setValue( 'parent.__out.p0 = !parent.__in.p0;' )
__children["ViewerSettings"]["Expression5"]["__engine"].setValue( 'OSL' )
Expand Down