export NWT_TRACE_LEVEL=N

where "N" is the trace level. See modules/javafx.graphics/src/main/native-prism-d3d/Trace.h

Btw, you can ignore the part about it being only enabled in debug mode. That env var is recognized in production builds as well.

-- Kevin


On 9/14/2023 4:27 AM, Nir Lisker wrote:
Hi,

I see that the D3D c++ files can output debug info via various DebugPrintD3DError and TraceLn functions. How can this output be enabled?

- Nir

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