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Note
When a method is called for all shading plugins, we will use the RixShadingPlugin base class method.

Order	Name	Comment	Granularity	Access to options	Access to RixIntegratorEnvironment
Once per rendering session.
#1	`RixShadingPlugin::Init()`	When the first instance of a shading plugin is created.	For each plugin.	Deprecated.	No.
Before the first render and between renders.
#2	`RixShadingPlugin::CreateInstanceData()` `RixIntegratorFactory::CreateIntegrator()` `RixProjectionFactory::CreateProjection()`	When the first instance of a shading plugin is created,

after the plugin's `Init()` has been called.	For each shading plugin instance.	Deprecated.	No.
	`RixLightFactory::CreateLight()`			At least once for each light plugin instance (*).
#3	`RixBxdf::GetInstanceHints()`

When a bxdf plugin instance is created, immediately after

Shortly after `RixBxdf::CreateInstanceData()` is called.		Deprecated.	No.
For each render.
#4	`RixProjection::RenderBegin()`

When a render starts.

		For each `RixProjection`.	Yes.	No.
`RixIntegrator::RenderBegin()`

When a render starts. This method needs to populate

Responsible for filling the `RixIntegratorEnvironment` structure.	For each `RixIntegrator`.	Yes.	Writing.
#5	`RixShadingPlugin::Synchronize()`

When a render starts (

With the synchronization message k_RenderBegin

)

.	For each plugin.	Yes.	Yes.
#6	`RixShadingPlugin::SynchronizeInstanceData()`

When a render starts

Only if `CreateInstanceData()` returned a non-zero `InstanceData::synchronizeHints`.	For each plugin instance.	Yes.	Yes.
Once per rendering session.
#7	`RixShadingPlugin::Finalize()`

At the end of the rendering session.

Before unloading the shading plugins.

For each plugin

Once per rendering session

.

Deprecated.

No.

Note
() `RixLightFactory::CreateInstanceData()` will be called once for each light plugin instance. `RixLightFactory::CreateLight()` will be called once per light plugin instance, per instance of the corresponding light*. This is a behavior specific to the `RixLight` API.

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