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[hawkwind]

In some cases I have shaders running on shapes that I remove from the scene graph when n longer needed.  Do I need to manually stop/remove then shader??

[Marvin Fröhlich]

In some cases I have shaders running on shapes that I remove from the scene graph when n longer needed.  Do I need to manually stop/remove then shader??

No, you don't have to do anything.

Are you just asking to make sure? Or do you actually have a problem?

Marvin

[hawkwind]

no problems, my game is in "chapters",  a unique scene graph for each chapter.  It occurred to me I knew how to start a shader but did not know how to end one and free up any resources involved.  I was worried i was leaving a increasing pile of shaders running in the background.

[Marvin Fröhlich]

no problems, my game is in "chapters",  a unique scene graph for each chapter.  It occurred to me I knew how to start a shader but did not know how to end one and free up any resources involved.  I was worried i was leaving a increasing pile of shaders running in the background.

No a shader is not running, if an "owning" shape is not attached to the scenegraph while rendering. You don't even need anything to do to "start" a shader program. You just attach it to a shape and it is used while rendering this shape. Hence there is nothing, you need to do to "stop" it. And all resources are cleaned up with garbage collection.

Marvin