# SOLVEDSetBool RDATA_RENDERENGINE

Happy New Year all,

I was rebuilding all plugins I converted to R20 and came upon this warning.

``````warning C4305: 'argument': truncation from '' to 'Bool'
``````

Now, this seemed very odd to me. As such I went looking for the reason of this compiler warning, and stumbled upon some code I took for granted, since taken from examples found in SDK as well as posts in the (now legacy) forum.

``````BaseContainer bcRender = image->pDoc->GetActiveRenderData()->GetData();
...
bcRender.SetBool(RDATA_RENDERENGINE, RDATA_RENDERENGINE_PREVIEWSOFTWARE);
``````
``````	RDATA_RENDERENGINE							= 5300,
RDATA_RENDERENGINE_STANDARD						= 0,
RDATA_RENDERENGINE_PREVIEWSOFTWARE		= 1,
RDATA_RENDERENGINE_PREVIEWHARDWARE		= 300001061,
RDATA_RENDERENGINE_PHYSICAL						= 1023342,
RDATA_RENDERENGINE_CINEMAN						= 1016630,
RDATA_RENDERENGINE_GPURENDERER				= 1037639,

``````

I don't think `SetBool` is appropriate here. So, I guess the `SimpleMaterial.cpp` example in the cinema4dsdk (and maybe others as well) might need to be adjusted.

Compiling with R19 seemed not to bring this warning up (or I must have missed it), but I now think to understand why some renderings failed with my plugins using the hardware renderer.

Hi Daniel,

Thanks a lot, you are indeed right, SimpleMaterial.cpp has been fixed.

Cheers,
Maxime.