A small bug in the pbrtdemoapp.

[zheng95z]

lighthouse2/apps/pbrtdemoapp/main.cpp

Lines 189 to 190 in a046e58

	float3 camPos = renderer->GetCamera()->position;
	float3 camDir = renderer->GetCamera()->direction;

I think this should be:

float3 camPos = renderer->GetCamera()->transform.GetTranslation();
float3 camDir = renderer->GetCamera()->transform.GetForward();