Arnold ShaderNetworkAlgo : Fix default value used when transferring U…

…sdTransform2d.in
GafferHQ · Apr 30, 2024 · d661bf4 · d661bf4
1 parent a4ceba9
commit d661bf4
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Showing 2 changed files with 2 additions and 1 deletion.
diff --git a/Changes.md b/Changes.md
@@ -25,6 +25,7 @@ Fixes
 
 - Viewer : Fixed Cycles shader balls.
 - TweakPlug : Fixed incorrect results and potential crashes in list modes.
+- USD : Fixed `Unsupported value type "StringData" for parameter "input"` warning when converting `UsdTransform2d` shaders with no `in` connections to Arnold.
 
 API
 ---

diff --git a/src/IECoreArnold/ShaderNetworkAlgo.cpp b/src/IECoreArnold/ShaderNetworkAlgo.cpp
@@ -998,7 +998,7 @@ void IECoreArnold::ShaderNetworkAlgo::convertUSDShaders( ShaderNetwork *shaderNe
 		else if( shader->getName() == "UsdTransform2d" )
 		{
 			newShader = new Shader( "matrix_multiply_vector" );
-			transferUSDParameter( shaderNetwork, handle, shader.get(), g_inParameter, newShader.get(), g_inputParameter, string() );
+			transferUSDParameter( shaderNetwork, handle, shader.get(), g_inParameter, newShader.get(), g_inputParameter, Color3f( 0 ) );
 			const V2f t = parameterValue( shader.get(), g_translationParameter, V2f( 0 ) );
 			const float r = parameterValue( shader.get(), g_rotationParameter, 0.0f );
 			const V2f s = parameterValue( shader.get(), g_scaleParameter, V2f( 1 ) );