ビューポート 2.0 のプラグイン シェーダのカラー管理サポート

MShaderInstance:createShaderInstanceWithColorManagementFragment(<colorSpace>) 

MObject connectedObject = MObject::kNullObj;
// Get connections to “color” attribute on node of interest
//
MPlug plug = P.findPlug("color");
if (!texture)
{
   if (!plug.isNull())
   {
      MPlugArray plugArray;
      if (plug.connectedTo(plugArray, true, false) && plugArray.length() == 1)
      {
         // Check for a file texture node connection
         //
         const MPlug& connectedPlug = plugArray[0];
         connectedObject = connectedPlug.node();
         if (connectedObject.hasFn( MFn::kFileTexture))
         {
            // Get the name of the file texture image and acquire a texture to use
            MString fileTextureName;
            MRenderUtil::exactFileTextureName(connectedObject, fileTextureName);
            if (fileTextureName.length())
            {
               texture = textureManager->acquireTexture(fileTextureName);
            }

            // Check if color management is even enabled
            MFnDependencyNode fileNode(connectedObject);
            MPlug cmEnabledPlug = fileNode.findPlug("colorManagementEnabled");
            bool cmEnabled = false;
            if (!cmEnabledPlug.isNull())
            {
               MString workingColorSpace;
               MString colorSpace;

               cmEnabled = true;
               cmEnabledPlug.getValue(cmEnabled);
               if (cmEnabled)
               {
                  // Get working space and input color space values.
                  // 
                  MPlug workingColorSpacePlug = fileNode.findPlug("workingSpace");
                  workingColorSpacePlug.getValue(workingColorSpace);

                  MPlug colorSpacePlug = fileNode.findPlug("colorSpace");
                  colorSpacePlug.getValue(colorSpace);

                  // If working or input color space changes then 
                  // we need to create a new shader. Previous shader resource
                  // will be released when a new one is created.
                  //
                  // Note that is the shader initially
                  // created which does not have a CM fragment.
                  // 
                  // m_texturedColorManagedShader
                  if (!m_texturedColorManagedShader || 
                        workingColorSpace != m_workingColorSpace ||
                        colorSpace != m_inputColorSpace)
                  {
                     m_texturedColorManagedShader = 
                        m_texturedShader->createShaderInstanceWithColorManagementFragment(colorSpace);
                     if (!m_texturedColorManagedShader)
                        cmEnabled = false;

                     m_workingColorSpace = workingColorSpace;
                     m_inputColorSpace = colorSpace;
                  }
               }
            }
         }
      }
   }
}